JP5970566B2 - Hot water tap - Google Patents

Description

  The present invention relates to a hot and cold water mixing tap.

  There is known a faucet capable of adjusting the discharge amount and the mixing ratio of hot and cold water by a handle operation. In the single lever type hot and cold water mixing tap, the lever handle can be turned to switch between hot water and water and the mixing ratio can be adjusted, and the discharge amount can be adjusted by operating the lever handle back and forth (up and down operation).

  Some of the hot and cold water mixing plugs have a click mechanism. Utility Model Registration No. 3166820 discloses a click mechanism in a lever turning operation. In the present invention, the braking edge is formed on the substantially circular braking spring plate, and the click mechanism is realized by fitting the braking edge with the abutting portion. Japanese Patent No. 2779792 discloses a click mechanism in a lever back-and-forth rotation operation. In this invention, the click mechanism is realized by the engagement of the plurality of recesses formed on both side portions of the lever body and the protrusions formed on the leaf spring.

  On the other hand, Japanese Patent Application Laid-Open No. 2003-129535 discloses a single lever hot and cold water mixing tap that discharges water at a position where a lever handle faces a user. An object of the present invention is to prevent a user from unintentionally using mixed water and to save resources.

Utility Model Registration No. 3166820 Japanese Patent No. 2777792 JP 2003-129535 A

  The click feeling can provide various information to the user. It turned out that a more convenient hot and cold water mixing tap can be realized by setting various click feelings.

  An object of the present invention is to provide a hot and cold water mixing tap with high convenience.

A preferable aspect of the hot and cold water mixing tap according to the present invention includes a lever, a temperature adjustment mechanism that can adjust the water discharge temperature by rotating the lever left and right, and a discharge amount adjustment mechanism that can adjust the discharge amount by rotating the lever back and forth. A left-right click mechanism that expresses a left-right click feeling as the lever rotates left and right, and a front-rear click mechanism that expresses a front-rear click feeling as the lever rotates back and forth,
It has. In this hot and cold water mixing tap, the click feeling differs depending on the lever front-rear position and / or lever left-right position.

Preferably, the difference in the click feeling is at least one selected from the following (A), (B), and (C), or a combination of two or more.
(A) The back-and-forth click feeling differs depending on the lever left-right position.
(B) The back-and-forth click feeling differs depending on the lever front-rear position.
(C) The left-right click feeling differs depending on the lever left-right position.

  Preferably, the hot and cold water mixing tap rotates in conjunction with the left-right rotation of the lever, and moves in conjunction with the front-rear rotation of the lever, and in conjunction with the left-right rotation of the lever. There are provided a member Y that rotates but does not move when the lever rotates back and forth, and a fixing member Z that does not interlock with any operation of the lever. Preferably, the back-and-forth click mechanism is configured by utilizing relative movement between the member X and the fixing member Z. Preferably, the left-right click mechanism is configured by utilizing relative rotation between the member Y and the fixed member Z.

  Preferably, the hot and cold water mixing plug includes a mixing plug main body, a housing provided in the mixing plug main body, a hot water valve hole, a water valve hole and a discharge valve hole provided in the housing. A fixed valve body, a movable valve body that is slidably disposed on the upper surface of the fixed valve body, and has a flow path forming recess and a lever engagement hole; And a rotating body that supports the lever so as to be able to rotate back and forth. Preferably, the movable valve element is rotated with respect to the fixed valve element by turning the lever, and the hot water / water mixing ratio can be adjusted by turning the movable valve element. Preferably, the movable valve body moves with respect to the fixed valve body by the front-rear rotation of the lever about the lever shaft as a rotation center, and the discharge amount is adjusted by this movement. Preferably, the member X is the movable valve body. Preferably, the member Y is the rotating body. Preferably, the fixing member Z is the housing or the fixed valve body.

  Preferably, the hot and cold water mixing plug includes a mixing plug main body, a housing provided in the mixing plug main body, a hot water valve hole, a water valve hole and a discharge valve hole provided in the housing. A fixed valve body, a movable valve body that is slidably disposed on the upper surface of the fixed valve body, has a flow path forming recess and a lever engagement hole, a lever insertion hole that penetrates in the vertical direction, and a lateral direction. A rotating body having a lever shaft holding hole therethrough, inserted into the lever insertion hole, a lever having a lever shaft insertion hole, and inserted into the lever shaft holding hole and the lever shaft insertion hole, and the lever Is provided with a lever shaft that supports pivotable in the front-rear direction, an elastic member, and a contact member. Preferably, the movable valve element is rotated with respect to the fixed valve element by turning the lever, and the hot water / water mixing ratio can be adjusted by turning the movable valve element. Preferably, the movable valve body moves with respect to the fixed valve body by the front-rear rotation of the lever about the lever shaft as a rotation center, and the discharge amount is adjusted by this movement. Preferably, the elastic member is disposed on the upper side or the lower side of the movable valve body. Preferably, the contact member is supported by the elastic member. Preferably, the lower surface of the housing or the upper surface of the fixed valve body has a contact surface that can contact the contact member supported by the elastic member. Preferably, the contact surface has a concave portion and / or a convex portion. Preferably, with the movement of the movable valve body, the abutting member moves relative to the abutting surface, and during the movement, between the concave portion or the convex portion and the abutting member. The engagement and the disengagement are performed, and the engagement or disengagement causes the back-and-forth click feeling.

  Due to the diversity of click feeling, a highly convenient hot and cold water mixing tap can be realized.

FIG. 1 is a perspective view of a hot and cold water mixing tap according to an embodiment of the present invention. FIG. 2 is a front view showing a part of the hot and cold water mixing tap of FIG. FIG. 3 is a side view showing a part of the hot and cold water mixing tap of FIG. 4 is a cross-sectional view taken along line F4-F4 of FIG. FIG. 5 is a perspective view of the lever assembly. FIG. 6 is a cross-sectional view of the lever assembly taken along a plane perpendicular to the lever shaft. FIG. 7 is a cross-sectional view of the lever assembly, and is a vertical cross-sectional view along the center line of the lever shaft. FIG. 8 is an exploded perspective view of the lever assembly. FIGS. 9A to 9H show the shaft holder. 9 (a) is a plan view, FIG. 9 (b) is an inner front view, FIG. 9 (c) is a side view, FIG. 9 (d) is an outer front view, and FIG. ) Is a bottom view, FIG. 9 (f) is a cross-sectional view taken along line ff in FIG. 9 (d), and FIG. 9 (g) is taken along line gg in FIG. 9 (d). It is sectional drawing and FIG.9 (h) is a perspective view. FIG. 10 is a bottom view of the housing. 11 is a cross-sectional view taken along line F11-F11 in FIG. FIG. 12 is an enlarged cross-sectional view of the lever assembly at a position including a front-rear click sphere. FIG. 13A is a plan view of the upper member, and FIG. 13B is a plan view showing a state in which the front-rear click elastic member (plate spring) is placed on the upper member, and FIG. FIG. 13 is a plan view showing a state in which the front-rear click elastic member and the front-rear click sphere are placed on the upper member, and FIG. 13D shows a state where the rotating body is placed on the state of FIG. It is a top view which shows the state. 14 (a) is a plan view of the rotating body, FIG. 14 (b) is a side view of the rotating body, FIG. 14 (c) is a bottom view of the rotating body, and FIG. 14 (d). These are sectional drawings along the dd line of Drawing 14 (a). FIG. 15 is a cross-sectional view of the lever assembly, which is a lateral cross-sectional view along the center line of the lever shaft. FIG. 16 is a cross-sectional view similar to FIG. 15 and shows a state in which the right-and-left click sphere is engaged with the convex portion. FIG. 17 is the same cross-sectional view as FIG. 15 and FIG. 16 and shows a state in which the engagement between the right-and-left click sphere and the convex portion is released. FIG. 18 is a cross-sectional view of a modified example of the lever assembly. FIG. 19 is a diagram for explaining an example of left-right rotation. 20 (a) is a plan view of the fixed valve body, FIG. 20 (b) is a bottom view of the fixed valve body, and FIG. 20 (c) is a cc line in FIG. 20 (a). 20 (d) is a sectional view taken along the line dd in FIG. 20 (a), and FIG. 20 (e) is taken along the line ee in FIG. 20 (a). 20 (f) is a sectional view taken along line ff in FIG. 20 (a), and FIG. 20 (g) is taken along line gg in FIG. 20 (a). FIG. 21 (a) is a plan view of the lower member 88, FIG. 21 (b) is a bottom view of the lower member 88, and FIG. 21 (c) is a cross-sectional view of FIG. 21 (b). FIG. 21D is a cross-sectional view taken along the line dd in FIG. 21B. 22 (a) to 22 (f) are diagrams showing an overlapping state of the upper surface opening line of the fixed valve body and the lower surface opening line of the movable valve body. In FIG. 22A, the lever left-right position is at the left limit position and the lever front-rear position is at the water stop position. In FIG. 22B, the lever left-right position is at the left limit position and the lever front-rear position is at the maximum discharge position. In FIG. 22 (c), the lever left-right position is at the center circumferential position and the lever front-rear position is at the water stop position. In FIG. 22D, the lever left-right position is at the center circumferential position and the lever front-rear position is at the maximum discharge position. In FIG. 22E, the lever left-right position is at the right limit position and the lever front-rear position is at the water stop position. In FIG. 22F, the lever left-right position is at the right limit position and the lever front-rear position is at the maximum discharge position. FIGS. 23A to 23F are the same as FIGS. 22A to 22F. FIGS. 24A to 24D are plan views showing modifications of the lower surface opening line of the movable valve body (lower member). FIG. 25A is a cross-sectional view of the lever assembly along the upper surface of the upper member. In FIG. 25A, the lever front-rear position is at the maximum discharge position. FIG. 25B is a cross-sectional view of the lever assembly along a direction perpendicular to the lever shaft. In FIG. 25B, the lever front-rear position is at the maximum discharge position. FIG. 25C is a cross-sectional view of the lever assembly along the upper surface of the upper member. In FIG.25 (c), the lever front-back position exists in a water stop position. FIG. 25D is a cross-sectional view of the lever assembly along the direction perpendicular to the lever shaft. In FIG.25 (d), the lever front-back position exists in a water stop position. FIG. 26 is a diagram for explaining another example of the left-right rotation. FIG. 27 is a bottom view of a housing according to a modification. 28A is a cross-sectional view taken along line AA in FIG. 27, and FIG. 28B is a cross-sectional view taken along line BB in FIG. FIG. 29 is a cross-sectional view of a housing according to another modification. FIG. 30 is a cross-sectional view of a lever assembly according to a modification.

  Hereinafter, the present invention will be described in detail based on preferred embodiments with appropriate reference to the drawings.

  FIG. 1 is a perspective view of a hot and cold water mixing tap 10 according to an embodiment of the present invention. FIG. 2 is a front view of the upper part of the hot and cold water mixing tap 10. FIG. 3 is a side view of the upper part of the hot and cold water mixing tap 10. The hot and cold water mixing tap 10 includes a main body 12, a handle 14, a discharge part 16, a hot water introduction pipe 18, a water introduction pipe 20 and a discharge pipe 22. A part of the main body 12 is covered with an outer cover 13. The ejection unit 16 has a head 24. The head 24 can switch between shower discharge and normal discharge. The hot / cold mixing tap 10 is used, for example, in a kitchen, a wash basin or the like.

  The discharge amount is adjusted by the vertical movement of the handle 14 (see arrow M in FIG. 3). In the present embodiment, the discharge amount increases as the handle 14 is moved upward. Conversely, the discharge amount may increase as the handle 14 is moved downward. Moreover, the mixing ratio of hot water and water changes by turning the handle 14. The water discharge temperature can be adjusted by turning the handle 14.

  4 is a cross-sectional view taken along line F4-F4 of FIG. The hot and cold water mixing tap 10 has a lever assembly 40 therein. The lever assembly 40 is disposed inside the outer cover 13. The handle 14 is fixed to the lever 46 by a screw 30.

  FIG. 5 is a perspective view of the lever assembly 40. FIG. 6 is a cross-sectional view of the lever assembly 40 along a cross section perpendicular to the lever axis. FIG. 7 is a cross-sectional view of the lever assembly 40 along the lever axis. FIG. 8 is an exploded perspective view of the lever assembly 40. The lever assembly 40 can be handled alone. In the hot and cold water mixing tap 10, the lever assembly 40 is replaceable.

  As shown in FIG. 8 and the like, the lever assembly 40 includes a housing 42, a rotating body 44, a lever 46, a lever shaft 48, a left and right click elastic member 50, a left and right click sphere 52, a shaft holding body 54, and a front and rear click sphere. 56, a front-rear click elastic member 58, a movable valve body 60, a fixed valve body 62, a packing 64, a packing 65, an O-ring 66, and a base body 68. The sphere 52 and / or the sphere 56 are examples of contact members. The contact member is not limited to a sphere. From the viewpoint of smooth lever operation and feel of clicking, the contact member is preferably a sphere.

  The elastic member 50 and the sphere 52 constitute a left and right click exit / retreat mechanism. The spherical body 56 and the elastic member 58 constitute a retracting mechanism for back-and-forth click.

  The base body 68 has a hot water inlet 70, a water inlet 72 and a discharge outlet 74. Under the base body 68, openings corresponding to the hot water inlet 70, the water inlet 72, and the discharge port 74 are provided, and the hot water inlet pipe 18 and the water inlet pipe 20 are respectively provided in these openings. And the discharge pipe 22 is connected.

  The fixed valve body 62 is fixed to the upper side of the base body 68. The base body 68 is provided with an engaging convex portion 76 for fixing the fixed valve body 62 and an engaging convex portion 77 for fixing the housing 42. The fixed valve body 62 is provided with an engagement recess 78 that engages with the engagement protrusion 76.

  The fixed valve body 62 includes a hot water valve hole 80, a water valve hole 82, and a mixed water valve hole 84. The hot water valve hole 80 is connected to the hot water inlet 70 of the base body 68. A watertight state of this connection is maintained by the packing 64. The water valve hole 82 is connected to the water inlet 72 of the base body 68. A watertight state of this connection is maintained by the packing 64. The mixed water valve hole 84 is connected to the discharge port 74 of the base body 68. The watertight state of this connection is maintained by the packing 65.

  The movable valve body 60 includes an upper member 86 and a lower member 88. The upper member 86 is fixed to the lower member 88. This fixing is achieved by the engagement between the convex portion 90 and the concave portion 92. In the present embodiment, the upper member 86 and the lower member 88 are separate members. By using separate members, the optimum material and manufacturing method can be selected for each of the upper member 86 and the lower member 88. The movable valve body 60 may be integrally formed as a whole.

  Although not shown in FIG. 8, a flow path forming recess 94 is provided on the lower surface of the lower member 88 (see FIGS. 6 and 7). A recess 96 is provided on the upper surface of the lower member 88 to avoid interference with the lower end 95 of the lever 46 (see FIG. 8).

  A smooth surface PL1 is provided on the upper surface of the fixed valve body 62 (see FIG. 8). The portion where the holes 82, 84 and 80 are not present is the smooth surface PL1. On the other hand, a smooth surface PL2 is provided on the lower surface of the lower member 88 (movable valve body 60). A smooth surface PL2 is provided in a portion where the flow path forming recess 94 is not formed. A watertight state is ensured by surface contact between the smooth surface PL1 and the smooth surface PL2.

  As shown in FIG. 8, the packing 64 has a pipe shape, but in FIG. 7, the packing 64 is illustrated as being solid due to the cross-sectional position. Moreover, in FIG.4 and FIG.6, description of the lever shaft 48 and the elastic member 50 is abbreviate | omitted.

  A lever engaging recess 98 that engages with the lower end 95 of the lever 46 is provided on the upper surface of the upper member 86. The lower end 95 of the lever 46 is inserted into the lever engaging recess 98. In conjunction with the movement of the lever 46, the movable valve body 60 slides on the fixed valve body 62.

  The engagement between the lever 46 and the lever engaging recess 98 may be direct or indirect. For example, another member may be interposed between the lever 46 and the lever engaging recess 98.

  On the upper surface of the upper member 86, an engagement convex portion 99 that can be engaged with the rear surface of the rotating body 44 is provided. An elastic member placement portion 101 is provided on the upper surface of the engagement convex portion 99. The elastic member placement portion 101 is a recess having substantially the same shape as the front / rear click elastic member 58. An elastic member 58 (plate spring) is accommodated in the elastic member placement portion 101.

  The lever 46 has a shaft hole 100. A lever shaft 48 is inserted into the shaft hole 100. The lever shaft 48 is pipe-shaped and has a hollow portion. A left-right click elastic member 50 is inserted into the lever shaft 48. The elastic member 50 is a coil spring. The longitudinal length of the lever shaft 48 and the longitudinal length L1 of the elastic member 50 are substantially the same. Left and right click spheres 52 are arranged at both ends of the lever shaft 48. A spherical body 52 is disposed in the opening of the hollow portion of the lever shaft 48. At the same time, the spheres 52 are arranged at both ends of the elastic member 50. The longitudinal length L1 of the elastic member 50 is the longitudinal length between both ends of the elastic member 50 in the assembled state of the lever assembly, and the longitudinal length L2 of the elastic member 200 described later. Is the same. The natural length of the elastic member 50 is longer than the length L1. The natural length of the elastic member 200 is longer than the length L2. The length L1 and the length L2 will be described later.

  The rotating body 44 includes a base portion 102 and an upper portion 104. The upper part 104 has a lever insertion hole 106 and a shaft hole 108. The base 102 has a spherical through hole 110. The through hole 110 is a long hole. The base 102 is slidably attached to the movable valve body 60 (the upper member 86 thereof).

  The upper portion 104 has an insertion portion 112 for slidingly inserting the shaft holding body 54 and a slide groove 113. The insertion portion 112 is provided at two opposing positions on the side surface of the upper portion 104.

  When the lever 46 is inserted into the lever insertion hole 106, the shaft hole 100 of the lever 46 and the shaft hole 108 of the rotating body 44 are arranged coaxially. The lever shaft 48 is inserted into the shaft hole 100 and the shaft hole 108. Further, an elastic member 50 is inserted into the lever shaft. By inserting the lever shaft 48, the lever 46 is fixed to the rotating body 44 in a rotatable state. The dimension of the lever insertion hole 106 is set so as to allow the lever 46 to rotate (back and forth). In the present application, the rotation of the lever 46 using the lever shaft 48 as a rotation axis is also referred to as “front-rear rotation”.

  The housing 42 includes a small diameter cylindrical portion 120, a large diameter cylindrical portion 122, and a connecting portion 124. The connecting portion 124 extends in the radial direction of the housing 42. The small diameter cylindrical portion 120 has an upper opening 126. The large diameter cylindrical portion 122 has a lower opening 128.

  The large diameter cylindrical portion 122 has an engagement hole 130. The engagement hole 130 is engaged with the engagement convex portion 77 of the base body 68. By this engagement, the housing 42 is fixed to the base body 68.

  The outer diameter of the circumferential surface portion of the upper portion 104 of the rotating body 44 is substantially equal to the inner diameter of the small diameter cylindrical portion 120. The upper portion 104 of the rotating body 44 is held by the small diameter cylindrical portion 120 in a rotatable state. In this rotation, the outer peripheral surface 105 of the upper part 104 and the inner peripheral surface 121 of the small diameter cylindrical part 120 slide. When the shaft holder 54 is fitted into the insertion portion 112, the outer surface of the shaft holder 54 forms a circumferential surface that is substantially the same as the circumferential surface portion of the upper portion 104. Therefore, the shaft holder 54 does not hinder the rotation of the rotating body 44.

  The large-diameter cylindrical portion 122 accommodates the base portion 102 of the rotating body 44, the movable valve body 60 and the fixed valve body 62.

  FIGS. 9A to 9H show the shaft holder 54. FIG. 9A is a top view. FIG. 9B is a plan view seen from the inside. FIG. 9C is a side view. FIG. 9D is a plan view seen from the outside. FIG. 9E is a bottom view. FIG. 9F is a cross-sectional view taken along the line ff of FIG. FIG. 9G is a cross-sectional view taken along the line gg in FIG. FIG. 9H is a perspective view.

  The shaft holder 54 includes a lever shaft holder 134, a sphere holder 136, a rail 138, a sphere protruding opening 140, and a notch 142. The shaft holding body 54 is attached to the insertion portion 112 of the rotating body 44 by inserting the rail 138 into the slide groove 113. A state where the shaft holder 54 is attached to the insertion portion 112 is also referred to as an attached state. In this attached state, the lever shaft holding portion 134 holds the end portion of the lever shaft 48. In this attached state, the sphere holder 136 holds the sphere 52. The spherical body 52 is always urged by the elastic member 50 regardless of the engagement with the convex portion 170 (described later). The spherical body 52 is pressed outward by the elastic member 50. The sphere 52 is pressed against the sphere holder 136 by the elastic member 50. As shown in FIGS. 9F and 9G, a part of the sphere 52 protrudes from the opening 140. This protrusion makes it possible to develop a left-right click feeling. The diameter of the opening 140 is smaller than that of the sphere 52. In addition, the diameter of the opening 140 is set in consideration of the protruding amount of the sphere 52 that allows the right and left click feeling to be expressed.

The shaft holder 54 may not be used. A portion corresponding to the shaft holding body 54 may be a part of the rotating body 44. Moreover, the number of the shaft holding body 54 may be one. That is, a portion corresponding to one of the two shaft holding bodies 54 may be a part of the rotating body 44. However, the provision of the shaft holding body 54 facilitates the assembly of the lever 46 to the rotating body 44. This assembly includes the following steps.
(Step a): The lever shaft 48 in which the elastic member 50 is inserted is inserted into the shaft hole 100 and the shaft hole 108. Alternatively, the lever shaft 48 is inserted into the shaft hole 100 and the shaft hole 108, and the elastic member 50 is inserted into the lever shaft 48.
(Step b): After the step a, the spheres 52 are disposed on both ends of the lever shaft 48 (elastic member 50).
(Step c): After the step b, the two shaft holders 54 are inserted into the insertion portions 112, respectively.

  In the step b, the two spheres 52 are temporarily fixed to both ends of the elastic member 50 using, for example, grease. Thereafter, the above-described step c may be performed. In this assembly, the spheres 52 can be directly arranged at both ends of the elastic member 50 as shown in the step b. By using the shaft holder 54, the ease of assembly is achieved.

  As described above, the shaft holder 54 has the notch 142. Due to the notches 142, the drop of the sphere 52 in the step c is suppressed. That is, the arrangement of the spheres 52 in the process b is easily maintained in the process c. Therefore, the ease of assembly is further improved.

  FIG. 10 is a bottom view of the housing 42 as viewed from below. Therefore, the lower surface 125 of the connecting portion 124 is shown in FIG. The lower surface 125 of the connecting part 124 includes a click expression part 146 and a click non-expression part 148. Further, the lower surface 125 includes a first stopper 150 and a second stopper 152.

  The base 102 of the rotating body 44 is in contact with the lower surface 125 of the connecting portion 124. When the rotating body 44 rotates, the base 102 slides on the lower surface 125. The first stopper 150 and the second stopper 152 regulate the rotation range of the rotating body 44.

  11 is a cross-sectional view taken along line F11-F11 in FIG. FIG. 11 is a cross-sectional view of the click mechanism expression unit 146. Note that FIG. 11 is upside down from the normal use state (FIG. 8). That is, in FIG. 11, the lower surface 125 of the connecting portion 124 is the upper side.

  The click mechanism expression unit 146 has a plurality of grooves 154. The click mechanism expression unit 146 has a plurality of protrusions 156. These grooves 154 and ridges 156 extend along the circumference. The groove 154 is an example of a recess. The protrusion 156 is an example of a convex portion.

  FIG. 12 is a cross-sectional view of the lever assembly 40 at a position where the front-rear click sphere 56 is present. The front / rear click elastic member 58 is a leaf spring. The elastic member 58 is arranged in the elastic member arrangement portion 101 of the upper member 86. A front-rear click sphere 56 is placed on the upper side of the central portion of the elastic member 58. The spherical body 56 can be displaced downward by the engagement with the protrusion 156. When this displacement occurs, the sphere 56 is biased upward by the elastic member 58. The elastic member placement portion 101 has a space 160 that allows the central portion of the elastic member 58 to be elastically deformed downward.

  FIG. 13A is a plan view of the upper member 86. FIG. 13B is a plan view of a state in which the elastic member 58 is placed on the upper member 86. FIG. 13C is a plan view showing a state where the elastic member 58 and the front-rear click sphere 56 are placed on the upper member 86. FIG.13 (d) is a top view of the state by which the rotation body 44 was mounted in the structure of FIG.13 (c). As illustrated in FIG. 13A, the elastic member placement portion 101 includes the space 160 described above, the elastic member placement surface 162, and the ball holding portion 164. The elastic member mounting surface 162 supports both ends of the elastic member 58 from below. Since there is a step around the mounting surface 162, the displacement of the elastic member 58 does not occur. The sphere 56 is held by the sphere holding portion 164 while being placed on the elastic member 58. Due to the sphere holding portion 164, the sphere 56 is not misaligned. As shown in FIGS. 12 and 13D, the sphere 56 protrudes upward from the through hole 110 of the rotating body 44 in a state where the rotating body 44 is placed. That is, a part of the sphere 56 is an upward projecting portion that projects from the upper surface of the rotating body 44. This upward projecting portion comes into contact with the lower surface 125 of the connecting portion 124. The lower surface 125 is an abutting surface that can abut against the upward projecting portion. When the sphere 56 protruding upward moves on the click mechanism expression unit 146, the click mechanism is expressed.

  In FIGS. 13A to 13C, a large number of recesses 166 such as long holes are drawn. These recesses 166 are not shown in FIG. These recesses 166 contribute to weight reduction of the movable valve body 60.

  FIG. 15 is a cross-sectional view of the lever assembly 40 taken along the central axis of the lever shaft 48. A spherical sliding surface 168 is provided on the inner peripheral surface 121 of the small diameter cylindrical portion 120. The spherical sliding surface 168 is a contact surface that can come into contact with the spherical body 52. The circumferential range in which the spherical sliding surface 168 is provided corresponds to the pivotable range of the lever 46. The spherical sliding surface 168 is provided with a convex portion 170 for click expression. The left-right click sphere 52 is always pressed against the sphere sliding surface 168 by the elastic member 50.

[Movement of each part as the lever rotates back and forth]
As described above, in adjusting the discharge amount, the handle 14 is moved up and down (see arrow M in FIG. 3). The movement of the handle 14 causes the lever 46 to rotate back and forth. In conjunction with this forward / backward rotation, the lower end 95 of the lever 46 rotates. The movable valve body 60 is moved by the engagement between the lower end 95 and the lever engagement recess 98. The movable valve body 60 slides on the fixed valve body 62 along a straight line. During this sliding, the surface contact between the smooth surface PL1 and the smooth surface PL2 is maintained. At the same time, the movable valve body 60 slides with respect to the rotating body 44.

  The moving direction of the movable valve body 60 is regulated by the rotating body 44. Due to this restriction, the mixing ratio of hot and cold water does not change only by turning the lever back and forth. In the present embodiment, a plurality of movement direction regulating mechanisms are employed. The movement direction regulating mechanism is an engagement between the rotating body 44 and the movable valve body 60 (upper member 86).

  A rotating body 44 is involved in this movement direction regulating mechanism. FIG. 14A is a plan view of the rotating body 44. FIG. 14B is a side view of the rotating body 44. FIG. 14C is a bottom view of the rotating body 44. FIG. 14D is a cross-sectional view taken along the line dd in FIG. As shown in FIG. 14C, a slide groove Gv is provided on the back surface of the rotating body 44 (the base portion 102 thereof). The slide groove Gv has a bottom surface Gv1 and two side surfaces Gv2. A through hole 110 is provided in the center of the bottom surface Gv1. Engaging protrusions 99 are fitted in the slide grooves Gv.

  The first movement direction restricting mechanism is an engagement between the engagement convex portion 99 of the upper member 86 and the slide groove Gv of the rotating body 44. More specifically, the side surface 174 (see FIGS. 13A to 13C) of the engagement convex portion 99 slides with the side surface Gv2 of the slide groove Gv. The direction of this slide is a linear direction D1 along the side surface 174 of the engaging convex portion 99. The engaging convex portion 99 contributes to the restriction of the moving direction while having the elastic member placement portion 101, the elastic member placement surface 162, the ball holding portion 164, and the like. In addition, the elastic member 58 and the sphere 56 are placed on the engaging convex portion 99 protruding upward, so that the positions of the elastic member 58 and the sphere 56 are increased. Therefore, it is easy to project the sphere 56 above the upper surface of the base 102. Thus, the engagement convex part 99 contributes to the regulation of the moving direction and the expression of the back-and-forth click mechanism.

  As described above, the through hole 110 described above is provided on the bottom surface Gv1 of the slide groove Gv. That is, the portion where the slide groove Gv is formed is thinned by the depth of the slide groove Gv, and the through hole 110 is provided in this thin portion. Therefore, the vertical length of the through hole 110 is shortened, and the formation of the upper protrusion is facilitated.

  The second movement direction regulating mechanism is a relationship between the side surface 180 (see FIGS. 13A and 8) of the upper member 86 and the downward projection 182 (see FIG. 8) provided on the base 102 of the rotating body 44. That's right. The downward convex portion 182 has a side surface 183. The side surface 183 slides with the side surface 180 of the upper member 86. The moving direction by this engagement is also the linear direction D1 described above. The side surface 180 and the side surface 174 described above are parallel.

  Thus, the movement direction is more reliably controlled by providing a plurality of movement direction regulating mechanisms for the same movement direction D1.

As described above, the through hole 110 is a long hole, and the longitudinal direction of the long hole is the linear direction D1 (see FIG. 13D). The width and depth of the through hole 110 are constant. In the through hole 110, the sphere 56 moves along the direction D1 (longitudinal direction of the through hole 110). Even if the position of the sphere 56 is changed by this movement, the protruding height of the sphere 56 does not change. Note that the width and / or height of the through hole 110 can be changed in the longitudinal direction of the long hole. In this case, the protruding height of the sphere 56 may vary due to a change in the position of the sphere 56. The following mode (B) can be realized by the variation in the protruding height.
(B) The back-and-forth click feeling differs depending on the lever front-rear position.

[Movement of each part as the lever turns]
As described above, in the temperature adjustment, the handle 14 is turned (see FIG. 19 described later). As the handle 14 turns, the lever 46 also turns. The movable valve body 60 is rotated by the engagement between the lower end 95 of the lever 46 and the lever engaging recess 98. The movable valve body 60 rotates with respect to the fixed valve body 62. During this rotation, the surface contact between the smooth surface PL1 and the smooth surface PL2 is maintained. By this rotation, the area ratio R1 changes and the temperature of the water discharge is adjusted. Thus, the hot and cold water mixing tap 10 has a temperature adjustment mechanism that can adjust the water discharge temperature by turning the lever 46 left and right.

  The angle range of lever rotation is limited. As described above, the first stopper 150 and the second stopper 152 are provided on the lower surface 125 of the connecting portion 124 (see FIG. 10). On the other hand, the base portion 102 of the rotating body 44 has an outer extending portion 109 protruding outward in the radial direction (see FIGS. 13D and 8). The outer extending portion 109 is provided with the through hole 110 described above. As the lever turns, the outer extending portion 109 moves in the circumferential direction in the range from the first stopper 150 to the second stopper 152. That is, the outer extending portion 109 moves in the circumferential direction in the range from the circumferential positions Rx1 to Ry1 (see FIG. 10). In this movement, the movement range of the center position in the circumferential direction of the outer extending portion 109 is from the circumferential positions Rx2 to Ry2. An angle range Rf from the circumferential positions Rx2 to Ry2 is a turning angle range of the lever 46. The angle range Rf is also a moving range of the forward / backward click sphere 56.

  Thus, the engagement between the outer extending portion 109 and the stoppers 150 and 152 is the first turning range regulating mechanism. Further, a second turning range restriction mechanism is provided. As shown in FIGS. 8 and 14 (d), the base portion 102 of the rotating body 44 is provided with a second outer extending portion 111. The second outer extending portion 111 moves in the circumferential direction in the range from the circumferential positions Rx3 to Ry3 (see FIG. 10).

  These two turning range regulating mechanisms are interlocked. When the outer extending portion 109 is in contact with the first stopper 150, the second outer extending portion 111 is in contact with the second stopper 152. When the outer extending portion 109 is in contact with the second stopper 152, the second outer extending portion 111 is in contact with the first stopper 150. The two turning range regulating mechanisms disperse the impact force when the lever 46 is turned to the limit, thereby improving the durability.

  For example, the turning range can be freely set according to the positions of the first stopper 150 and the second stopper 152.

  The lever assembly 40 having the above structure includes a left-right click mechanism and a front-rear click mechanism. The left-right click mechanism is a mechanism that expresses a click feeling associated with the turning of the lever 46. The back-and-forth click mechanism is a mechanism that expresses a click feeling associated with the lever 46 rotating back and forth.

[Click feeling when turning left and right (left and right click feeling)]
The click feeling in the left-right rotation operation is generated by the left-right click mechanism. In the present application, this click feeling is also simply referred to as a left-right click feeling. As shown in FIGS. 15 to 17, this left-right click feeling is generated by engagement or disengagement between the left-right click sphere 52 and the convex portion 170. FIG. 16 is a cross-sectional view similar to FIG. 15, and shows a state where the sphere 52 is engaged with the convex portion 170. FIG. 17 is a cross-sectional view similar to FIG. 15 and shows a state where the engagement between the sphere 52 and the convex portion 170 is released. As the lever 46 turns, the state shown in FIG. 15 is shifted to the engaged state shown in FIG. The elastic member 50 is compressed by the engagement state shown in FIG. 16, and the resistance force at the time of turning increases. The sensation resulting from this increase in resistance is also an example of a left-right click feeling. In addition, vibration occurs at the moment of disengagement. This vibration produces a typical left-right click feeling. In addition, a sound is generated at the moment of disengagement. The sense resulting from this sound is also an example of a left-right click feeling.

[Click feeling in front-back rotation operation (front-back click feeling)]
The click feeling in the forward / backward rotation operation is generated by the forward / backward click mechanism. In the present application, this click feeling is also simply referred to as a back-and-forth click feeling. FIG. 12 shows a state in which the sphere 56 and the groove 154 are engaged. This click B feeling is caused by the engagement or disengagement of the sphere 56 and the groove 154. Further, this back-and-forth click feeling is caused by the engagement or disengagement between the sphere 56 and the protrusion 156. As the lever 46 rotates back and forth, the sphere 56 moves on the click mechanism expression unit 146 in the radial direction. By this movement, the engagement between the sphere 56 and the first groove 154 is released, and when the movement further moves, the sphere 56 and the second groove 154 are engaged. These engagements can cause vibrations. This vibration causes a back-and-forth click feeling. Due to these engagements, the resistance force when the lever rotates back and forth changes. The sense resulting from this change in resistance is also an example of a back-and-forth click feeling. In addition, a sound is generated at the moment of this engagement. The sense resulting from this sound is also an example of a back-and-forth click feeling. Further, due to the engagement between the sphere 56 and the protrusion 156, the resistance force when the lever is rotated back and forth is increased. The sense resulting from this increase in resistance is also an example of a back-and-forth click feeling.

  FIG. 18 is a modification of the embodiment shown in FIGS. In this embodiment, two elastic members 200 are used instead of the elastic member 50. These elastic members 200 are coil springs. The longitudinal length of the coil spring 200 is shorter than the longitudinal length of the coil spring 50. Further, the embodiment of FIG. 18 has an intermediate member 202. The intermediate member 202 is a columnar member. The material of the intermediate member 202 is stainless steel. The intermediate member 202 serves as a spacer. The interval between the two coil springs 200 is set by the intermediate member 202. The compression degree of the coil spring 200 can be adjusted by the intermediate member 202.

  The intermediate member 202 is not fixed to the lever shaft 48. The intermediate member 202 may be fixed to the lever shaft 48.

  FIG. 19 is a plan view for explaining the turning (left-right rotation) of the handle 14. The handle 14 can turn from the left limit ML to the right limit MR. The swivelable range RF of the handle 14 corresponds to the angle range Rf of FIG. 10 described above. The angle θf of the range RF is equal to the angle θf of the range Rf. As shown in FIG. 19, at the center circumferential position C1 of the turnable range RF, the handle 14 faces the front. This central circumferential position C1 corresponds to the central circumferential position c1 in FIG. As shown in FIG. 19, the turning range of the handle 14 is symmetrical with respect to the front position S1.

  As shown in FIG. 19, the angle range RT1 is on the right side of the center circumferential position C1 when viewed from the user. This angle range RT1 corresponds to the angle range Rt1 in FIG. The angle θ1 of the range RT1 is equal to the angle θ1 of the range Rt1. Therefore, the angle range RT1 is freely set by the arrangement of the click non-expressing part 148. When the circumferential position of the handle 14 is in the angle range RT1, hot water is not mixed. That is, when the circumferential position of the handle 14 is in the angle range RT1, the ratio of water is 100%. A range RT1 is a water discharge position. In the present embodiment, hot water is not mixed when the handle 14 is on the right side of the front.

  Even when the circumferential position of the handle 14 is at the central circumferential position C1, hot water is not mixed. That is, that is, when the circumferential position of the handle 14 is at the central circumferential position C1 (front position S1), the ratio of water is 100%. The position C1 (position S1) is a water discharge position.

  As shown in FIG. 19, the angle range RT2 is on the left side of the center circumferential position C1 when viewed from the user. This angle range RT2 corresponds to the angle range Rt2 in FIG. The angle θ2 of the range RT2 is equal to the angle θ2 of the range Rt2. Therefore, the angle range RT2 is freely set by the arrangement of the click mechanism expression unit 146. When the circumferential position of the handle 14 is in the angle range RT2, hot water and water are mixed, or water is not mixed (hot water is 100%). That is, when the circumferential position of the handle 14 is in the angle range RT2, the ratio of water is 0% or more and less than 100%. Range RT2 is a hot water mixing discharge position and a hot water discharge position.

  In the embodiment of FIG. 19, the turnable range RF of the handle 14 is symmetric with respect to the front position S1, but may be asymmetric with respect to the left and right. For example, the angle θ2 of the angle range RT2 may be 60 degrees, and the angle θ1 of the angle range RT1 may be 40 degrees.

  If the angle range RT2 is too small, the angle range of the handle 14 that can adjust the hot / cold water mixing ratio becomes too narrow, and the change of the hot / cold water mixing ratio becomes too rapid. In this respect, the angle θ2 of the range RT2 is preferably 40 degrees or more, more preferably 50 degrees or more, and particularly preferably 55 degrees or more. If the angle range RT2 is too large, the angle range of the handle 14 that can adjust the hot / cold water mixing ratio becomes too wide, and the operability deteriorates. From this viewpoint, the angle θ2 of the range RT2 is preferably 100 degrees or less, more preferably 90 degrees or less, and particularly preferably 70 degrees or less.

  The angle θ1 of the angle range RT1 can be 0 degree. However, since the angle θ1 is not set to 0 degrees with a normal hot and cold water mixing tap, if θ1 is set to 0 degrees, the user may excessively operate the handle 14 to the right side of the center circumferential position C1. is there. Repeating this excessive operation may place an excessive burden on the hot / cold mixing tap and adversely affect the durability of the hot / cold mixing tap. In this respect, the angle θ1 of the range RT1 is preferably 10 degrees or more, more preferably 20 degrees or more, and particularly preferably 30 degrees or more. When the angle θ1 is excessive, the range in which the ratio of water is 100% becomes too wide and the operability is deteriorated. In this respect, the angle θ1 of the range RT1 is preferably 70 degrees or less, more preferably 60 degrees or less, and particularly preferably 50 degrees or less.

  If the angle ratio (θ1 / θ2) between the angle range RT1 and the angle range RT2 is too small, the angle θ1 becomes too small or the angle θ2 becomes too large, and the above-described problem is likely to occur. In this respect, the angle ratio (θ1 / θ2) is preferably equal to or greater than 0.2, more preferably equal to or greater than 0.4, and particularly preferably equal to or greater than 0.6. On the other hand, if the angle ratio (θ1 / θ2) is too large, the angle θ1 becomes too large or the angle θ2 becomes too small, and the above-described problem is likely to occur. In this respect, the angle ratio (θ1 / θ2) is preferably 0.9 or less, more preferably 0.8 or less, and particularly preferably 0.7 or less.

  In the embodiment of FIG. 19, the angle range RT1 is set to the right side of the central circumferential position C1 when viewed from the user, and the ratio of water is set to 100% on the right side of the central circumferential position C1. Further, the angle range RT2 is set to the left side of the central circumferential position C1 when viewed from the user, and the ratio of water is set to 0% or more and less than 100% on the left side of the central circumferential position C1. These configurations may be reversed. That is, the angle range RT1 is set to the left of the center circumferential position C1 when viewed from the user, the water ratio is set to 100% on the left side of the center circumferential position C1, and the angle range RT2 is set to the user. The ratio of water is 0% or more and less than 100% on the right side of the center circumferential position C1. Even in this case, all of the numerical values described above regarding the angle θ1, the angle θ2, and / or the angle ratio (θ1 / θ2) can be applied. However, as will be described later, the relationship between the lever circumferential position and the mixing ratio of hot water can be set in various ways, and an effect commensurate with each setting can be achieved.

  The circumferential position of the handle 14 is the same as the circumferential position of the lever 46 (lever left-right position). The angle range RT1 is a lever left-right position where hot water is not mixed. The angle range RT2 is a lever left-right position where hot water is mixed. “Hot water is mixed” includes the case where hot water is 100%.

  As shown in FIG. 10, the click mechanism expression part 146 is provided in the entire range of the angle range Rt2. Therefore, when the lever left-right position is in the angle range RT2, the front-rear click mechanism works. On the other hand, the click mechanism expression part 146 is not provided in the whole range of the angle range Rt1. The entire range of the angle range Rt1 is the click non-expression part 148. Therefore, when the lever left-right position is in the angle range RT1, the front-rear click mechanism does not work.

  Therefore, in this embodiment, the back-and-forth click feeling does not appear in the front-rear rotation operation at the lever left-right position where hot water is not mixed. Moreover, in the lever left-right position where hot water is mixed, a back-and-forth click feeling is expressed by a forward-backward rotation operation. Therefore, if a back-and-forth rotation operation is performed, whether hot water is mixed or not is determined based on the presence or absence of a back-and-forth click feeling. However, there are various settings for the back-and-forth click feeling, and an effect commensurate with each setting can be achieved.

  The determination of whether hot water is mixed can also be achieved by the left-right click feeling accompanying the lever turning. In the turning operation of the lever 46, it is preferable that a left-right click feeling appears at a boundary K1 (see FIG. 19) between the left-right position where only water discharges and the left-right position where hot water is mixed. Whether or not hot water is mixed is determined based on the left and right click feeling. For example, in the embodiment of FIG. 19, it is preferable that a left-right click feeling appears at the boundary between the angle range RT1 and the angle range RT2. With the above-described back-and-forth click feeling and the left-and-right click feeling, it is possible to more reliably determine whether hot water is mixed. There are various combinations of combinations of the back-and-forth click feeling and the left-and-right click feeling, and an effect commensurate with each setting can be achieved.

  FIG. 20A is a plan view of the fixed valve body 62. Fig.20 (a) is the figure which looked at the fixed valve body 62 from the upper side. FIG. 20B is a bottom view of the fixed valve body 62. FIG. 20B is a view of the fixed valve body 62 as viewed from below. 20 (c) is a cross-sectional view taken along the line cc of FIG. 20 (a), FIG. 20 (d) is a cross-sectional view taken along the line dd of FIG. 20 (a), 20 (e) is a cross-sectional view taken along the line ee of FIG. 20 (a), FIG. 20 (f) is a cross-sectional view taken along the line ff of FIG. 20 (a), FIG.20 (g) is sectional drawing along the gg line of Fig.20 (a).

  As shown in FIG. 20A, the hot water valve hole 80 (upper surface opening line 80L) is a bent long hole. The water valve hole 82 (upper surface opening line 82L) is also a bent long hole.

  As shown in FIG. 20A, the hot water valve hole 80 has an upper surface opening line 80L. Upper surface opening line 80L is the opening shape of hot water valve hole 80 in smooth surface PL1. The water valve hole 82 has an upper surface opening line 82L. Upper surface opening line 82L is the opening shape of water valve hole 82 in smooth surface PL1. The mixed water valve hole 84 has an upper surface opening line 84L. The upper surface opening line 84L is the opening shape of the mixed water valve hole 84 in the smooth surface PL1.

  As shown in FIG. 20B, the hot water valve hole 80 has a lower surface opening line 80s. The water valve hole 82 has a lower surface opening line 82s. The mixed water valve hole 84 has a lower surface opening line 84s.

  As shown in FIG. 20A, the water valve hole 82 has a first wall surface portion W1 at one end in the longitudinal direction thereof. The water valve hole 82 has a second wall surface portion W2 at the other end in the longitudinal direction. The hot water valve hole 80 has a third wall surface portion W3 at one end in the longitudinal direction thereof. The hot water valve hole 80 has a fourth wall surface portion W4 at the other end in the longitudinal direction thereof.

  It is preferable that at least one of these wall surface portions W1 to W4 has an inclined surface. As shown in FIGS. 20A to 20G, the first wall surface portion W1 has an inclined surface SL1. The second wall surface portion W2 has an inclined surface SL2. The third wall surface portion W3 has an inclined surface SL3. The fourth wall surface portion W4 has an inclined surface SL4.

  These inclined surfaces SL1 to SL4 are inclined with respect to the vertical direction when the hot and cold water mixing tap 10 is in use. These inclined surfaces SL1 to SL4 are visible from above (smooth surface PL1) (see FIG. 20A).

  Thus, the wall surface of the hot water valve hole 80 has the inclined surfaces SL3 and SL4. The wall surface of the water valve hole 82 has inclined surfaces SL1 and SL2.

  These inclined surfaces SL1 to SL4 contribute to the suppression of the water hammer. The water hammer is a phenomenon in which sound is generated inside the mixer tap due to the impact of water pressure when the water stop state is switched to the water discharge state. When hot water or water suddenly flows into the hot water valve hole 80 or the water valve hole 82, a water hammer is generated.

  The inclined surfaces SL1 to SL4 suppress this rapid inflow. Therefore, water hammer is suppressed. Since hot water or water flows obliquely along the inclined surface, the impact of water pressure is alleviated.

  Moreover, since hot water flows in at an angle, the water pressure impact acting on the movable valve body 60 and the like is alleviated. This relaxation can improve the durability of the hot and cold water mixing tap 10.

  The inclined surfaces SL1 to SL4 may be flat surfaces or curved surfaces. In addition, the inclined surfaces SL1 to SL4 may be smooth or may be stepped (for example, stepped).

  As shown in FIG. 20A, the upper surface opening line 80L of the hot water valve hole 80 and the upper surface opening line 82L of the water valve hole 82 are formed asymmetrically. That is, in the plan view of FIG. 20A, there is no symmetry axis where the upper surface opening line 80L and the upper surface opening line 82L overlap when the figure is reversed with a certain straight line as an axis. For example, the upper opening line 80L and the upper opening line 82L have no symmetry with respect to the lever front-rear direction center line Lc (see FIGS. 20A and 20B). When viewed from above, the lever front-rear direction center line Lc coincides with the center line of the lever 46 when the lever 46 is at the center circumferential position C1 (see FIG. 19).

  One method for increasing the degree of freedom of the hot water switching function is to design various positional relationships between the flow path forming recess 94, the hot water valve hole 80, and the water valve hole 82. The design freedom of the hot water valve hole 80 and the water valve hole 82 is improved by not being limited to the above-described symmetrical configuration. Therefore, various hot and cold water switching functions can be realized without causing a large cost increase.

  Conventionally, the hot water valve hole 80 and the water valve hole 82 are arranged symmetrically. The inclined surface SL is not provided on the side surfaces of the hot water valve hole 80 and the water valve hole 82, and the side surface of the hot water valve hole 80 is perpendicular to the smooth surface PL1. As a result, in the hot water valve hole 80, the upper surface opening line and the lower surface opening line were in the same position and in the same shape. Similarly, in the water valve hole 82, the upper surface opening line and the lower surface opening line were in the same position and in the same shape. In such a configuration, if the upper surface opening line has a special shape such as left-right asymmetry, the lower surface opening line also has a special shape. When the lower surface opening line has a special shape, the widely used base body 68 does not conform to the lower surface opening line. That is, a situation occurs in which the general-purpose base body 68 cannot be used.

  On the other hand, in the said embodiment, the shape and arrangement | positioning differ by the upper surface opening line 80L and the lower surface opening line 80s. Further, the shape and position of the upper surface opening line 82L and the lower surface opening line 82s are different. The aforementioned inclined surfaces SL1 to SL4 cause these differences. In this configuration, the shape of the lower surface opening lines 80s and 82s can be adapted to the general-purpose base body 68 while increasing the design freedom of the upper surface opening lines 80L and 82L. From this viewpoint, it is preferable that the lower surface opening line 82s and the lower surface opening line 80s are symmetric (see FIG. 20B). The lower surface opening line 82s and the lower surface opening line 80s are symmetric (left-right symmetric), and the axis of symmetry is the lever front-rear direction center line Lc.

  FIG. 21A is a plan view of the lower member 88 of the movable valve body 60. FIG. 21A is a view of the lower member 88 as viewed from above. FIG. 21B is a bottom view of the lower member 88. FIG. 21B is a view of the lower member 88 as viewed from below. FIG.21 (c) is sectional drawing along the cc line of FIG.21 (b). FIG. 21D is a cross-sectional view taken along the line dd in FIG.

  The flow path forming recess 94 has a lower surface opening line 94L. The lower surface opening line 94L is the opening shape of the flow path forming recess 94 in the smooth surface PL2.

  22 (a) to 22 (f) are diagrams showing an overlapping state of the upper surface of the fixed valve body 62 and the lower surface of the movable valve body 60 (lower member 88). 22 (a) to 22 (f), the line of the movable valve body 60 hidden by the fixed valve body 62 in the upper view is drawn with a broken line, and the lower surface line of the movable valve body 60 (lower member 88) is shown. It is drawn with a solid line. 22A to 22F show the overlapping state of the upper surface opening line 80L, the upper surface opening line 82L, and the lower surface opening line 94L.

  22A to 22F, the lower surface line of the movable valve body 60 that cannot be seen from above is shown by a solid line. Note that this point is different from a normal drawing.

  FIG. 22A shows a state in which the lever left-right position is the left limit ML, and the lever front-rear position is the upper limit (discharge stop). FIG. 22B shows a state in which the lever left-right position is the left limit ML and the lever front-rear position is the lower limit (discharge maximum). FIG. 22C shows a state where the lever left-right position is the center circumferential position C1 (front position S1), and the lever front-rear position is the upper limit (discharge stop). FIG. 22D shows a state where the lever left-right position is the center circumferential position C1 (front position S1) and the lever front-rear position is the lower limit (maximum discharge). FIG. 22 (e) shows a state where the lever left-right position is the right limit MR and the lever front-rear position is the upper limit (discharge stop). FIG. 22F shows a state in which the lever left-right position is the right limit MR, and the lever front-rear position is the lower limit (maximum discharge position).

  A region X surrounded by the upper surface opening line 80L is indicated by broken line hatching in FIG. This region X is an upper surface opening region of the hot water valve hole 80. A region Y surrounded by the upper surface opening line 82L is indicated by broken line hatching in FIG. This region Y is an upper surface opening region of the water valve hole 82. A region Z surrounded by the lower surface opening line 94L is indicated by broken line hatching in FIG. This region Z is a lower surface opening region of the flow path forming recess 94 in the movable valve body 60 (lower member 88).

  In FIG. 20A, a region E indicated by two-dot chain hatching is a region surrounded by the upper surface opening line 84 </ b> L of the mixed water valve hole 84.

  Solid line hatching in FIG. 22B indicates an overlapping region XZ of the region X and the region Z. The hatching in FIG. 22D shows an overlapping area YZ between the area Y and the area Z. The hatching in FIG. 22 (e) indicates an overlapping region YZ between the region Y and the region Z.

  In all the movable regions, the region E of the mixed water valve hole 84 overlaps the region Z of the flow path forming recess 94.

[Flow of hot water]
The hot water reaches the hot water valve hole 80 via the hot water introduction section (the hot water introduction pipe 18 and the hot water introduction port 70). The water reaches the water valve hole 82 through the water introduction part (the water introduction pipe 20 and the water introduction port 72).

  The hot water that has reached the hot water valve hole 80 flows into the flow path forming recess 94. This inflow is caused by the region XZ. As the movable valve body 60 slides, the area of the region XZ changes. When the region XZ does not exist, hot water does not flow into the flow path forming recess 94. The case where the region XZ does not exist means that the hot water valve hole 80 is completely closed by the smooth surface PL2 constituting the lower surface of the movable valve body 60 (lower member 88). An example of a state in which the hot water valve hole 80 is completely closed by the smooth surface PL2 is shown in FIGS. 22 (d) and 22 (f).

  The water that has reached the water valve hole 82 flows into the flow path forming recess 94. This inflow is caused by the region YZ. As the movable valve body 60 slides, the area of the region YZ changes. When the region YZ does not exist, water does not flow into the flow path forming recess 94. The case where the region YZ does not exist means that the water valve hole 82 is completely closed by the smooth surface PL2 constituting the lower surface of the movable valve body 60 (lower member 88). An example of a state in which the water valve hole 82 is completely blocked by the smooth surface PL2 is shown in FIG.

  The hot water and / or water that has reached the flow path forming recess 94 reaches the discharge portion 16 via the mixed water valve hole 84, the discharge port 74, and the discharge pipe 22.

  The mixing ratio of hot water and water depends on the area ratio R1 between the region XZ and the region YZ. As the handle 14 turns, the movable valve body 60 rotates via the lever 46. By the rotation of the movable valve body 60, the area ratio R1 changes. This change adjusts the water temperature.

  The discharge amount depends on the total area Sa of the region XZ and the region YZ. As the handle 14 moves up and down, the lever 46 rotates back and forth, and the movable valve body 60 moves in the linear direction D1. Due to the movement of the movable valve body 60, the total area Sa changes. The discharge amount is adjusted by this change. In this manner, the hot and cold water mixing tap 10 has a discharge amount adjusting mechanism that can adjust the discharge amount by rotating the lever 46 back and forth.

  When the total area Sa is zero, the discharge is stopped. The case where the total area Sa is zero means that the hot water valve hole 80 and the water valve hole 82 are completely closed by the smooth surface PL2. An example in which the hot water valve hole 80 and the water valve hole 82 are completely closed by the smooth surface PL2 is shown in FIGS. 22 (a), (c) and (e).

  In FIG. 22B, the region YZ does not exist. When the lever left-right position is the left limit ML, water is not mixed regardless of the lever vertical rotation position. That is, in this case, hot water is 100%.

  In FIG. 22D, the region XZ does not exist. When the lever left-right position is the central circumferential position C1, hot water is not mixed regardless of the lever vertical rotation position. That is, in this case, water is 100%. Therefore, the water heater does not operate and energy saving is achieved. In general, the user of the hot and cold water mixing tap tends to use the lever in accordance with the center circumferential position C1. In the hot and cold water mixing tap 10, energy saving is achieved at the central circumferential position C <b> 1 that has a high tendency to be used.

  In FIG. 22F, the region XZ does not exist. When the lever left-right position is the right limit MR, hot water is not mixed regardless of the lever vertical rotation position. That is, in this case, water is 100%.

  FIG. 23 is the same diagram as FIG. However, from the viewpoint of facilitating understanding of the drawing, in FIG. 23, a part of the reference numerals shown in FIG. 22 is omitted.

  In FIGS. 23A, 23 </ b> C, and 23 </ b> E, a double arrow D <b> 1 indicates a linear direction of movement of the movable valve body 60. Therefore, in FIGS. 22A to 22F, the lower surface opening line 94L moves along the linear direction D1.

   In FIGS. 23A, 23 </ b> C, and 23 </ b> E, a double-headed arrow D <b> 2 indicates the front-rear direction of the lever 46 that rotates forward and backward. The front-rear direction D2 is the front-rear rotation direction of the lever 46 in plan view as viewed from above. The front-rear direction D2 is a direction perpendicular to the central axis of the lever 46 that pivots back and forth (the central axis of the lever shaft 48). Considering an intersection line Lm (not shown) between a plane perpendicular to the central axis of the lever 46 and rotating in the front-rear direction and the smooth surface PL2, the front-rear direction D2 is parallel to the intersection line Lm.

  In the hot and cold water mixing tap 10, the front-rear direction D2 is not parallel to the linear direction D1. In FIGS. 23A, 23C, and 23E, a double arrow θx indicates an angle formed between the linear direction D1 and the front-rear direction D2. By setting the angle θx, the degree of freedom of the water discharge specification is improved.

  Here, attention is focused on FIGS. 23 (c) and 23 (d). That is, attention is paid to the case where the lever left-right position is the center circumferential position C1. If the movable valve body 60 moves in the front-rear direction D2, a region XZ is generated in the discharge state of FIG. That is, hot water is mixed by this region XZ. However, in the present embodiment, the linear direction D1 is inclined with respect to the front-rear direction D2. And the direction of this inclination is a direction which avoids duplication with the valve hole 80 for hot water in the state whose lever right-and-left position is the center periphery position C1. Therefore, when the lever left-right position is the central circumferential position C1, even when the lever 46 is rotated in the discharge direction, the movable valve body 60 moves along the linear direction D1, so that only the region YZ is generated, and the region XZ Does not occur (see FIG. 23D).

  FIG. 24A is a plan view showing the shape of the lower surface opening line 94L. The lower surface opening line 94L has a straight portion ST. The straight portion ST is parallel to the linear direction D1 (see FIGS. 23A, 23C, and 23E). The lower surface opening line 94L is disposed on the hot water valve hole 80 side. In a state where the discharge amount is the maximum, when shifting from a state where only water is discharged to a state where hot water is mixed, it is this straight shape that first overlaps the upper surface opening line 80L among the lower surface opening lines 94L. Part ST. In other words, in the process of turning the lever 46 from the state of FIG. 22D to the state of FIG. 22B, the straight portion ST first overlaps the upper surface opening line 80L. Such arrangement of the straight portion ST contributes to preventing mixing of hot water when the lever left-right position is the center circumferential position C1 (see FIG. 23 (d)).

  The straight portion ST is preferably substantially parallel to the linear direction D1. The term “substantially parallel” is intended to allow an error angle of ± 5 degrees. The error angle is preferably ± 3 degrees, and more preferably, the straight portion ST and the linear direction D1 are parallel to each other as in the above embodiment. When the straight part ST is not a straight line, the error angle and the parallelism are determined by a straight line connecting both ends of the straight part ST.

  By providing the straight portion ST along the linear direction D1, mixing of hot water is effectively prevented in the entire range of forward and backward rotation at the central circumferential position C1. Therefore, mixing of hot water against the user's intention is suppressed, and energy saving can be achieved. In addition, since it is not necessary to avoid mixing hot water with a special valve hole shape, the degree of freedom in designing the valve hole is improved.

  By improving the degree of freedom in designing the valve hole, it is easy to provide the movable valve body 60 and the fixed valve body 62 with a front-rear click mechanism and / or a left-right click mechanism. For example, it may be easy to provide the movable valve body 60 with a concave portion and / or a convex portion or with a retracting mechanism. In addition, it may be easy to provide the fixed valve body 62 with a concave portion and / or a convex portion or provide a retracting mechanism. Therefore, the degree of freedom in designing the click feeling mode can be improved.

  In the present embodiment, the generation of the region XZ (see FIG. 23A) is controlled by making the linear direction D1 different from the front-rear direction D2. For this reason, the restriction of the valve hole shape can be reduced. Therefore, the degree of freedom in designing the valve hole shape is improved. This improvement in the degree of design freedom improves the degree of freedom in setting the relationship between the hot / cold water mixing ratio and the lever turning operation. In addition, the degree of freedom is improved in setting the relationship between the discharge amount and the lever back-and-forth rotation operation.

  In general, the supply pressure of hot water supplied to the hot water valve hole 80 is lower than the supply pressure of water supplied to the hot water valve hole 82. This is due to the fact that the hot water reaches the hot water mixing tap 10 via the hot water supply device. By providing the straight portion ST on the hot water valve hole 80 side, the region XZ (FIG. 23B) is likely to increase with a small turning angle in the turning to the hot water side (turning to the left in FIG. 19). In particular, when switching from a state where only water is discharged to a state where hot water is mixed, the mixing ratio of hot water tends to increase. Therefore, it is possible to suppress a situation in which the water discharge temperature is unlikely to rise despite being in the lever left and right positions where hot water is mixed. For this reason, the hot and cold water mixing tap 10 with easy temperature control can be realized.

  The length of the lower surface opening line 94L in the direction parallel to the linear direction D1 is Lf. In the present application, the straight portion ST means a portion formed by a line having a radius of curvature that is equal to or greater than twice the length Lf. In the straight portion ST, the radius of curvature may change. From the viewpoint of ease of manufacture and design, the straight portion ST is preferably formed by a line having a radius of curvature of three or more times the length Lf, and the most preferable shape of the straight portion ST is a straight line. is there. Note that the radius of curvature of the straight portion ST can be 20 mm or more, further 25 mm or more, for example, 28 mm.

  The angle θx (see FIG. 23) is preferably 5 degrees or more and preferably 10 degrees or more from the viewpoint of preventing mixing of hot water when the lever left-right position is the center circumferential position C1 and increasing the degree of freedom in designing each valve hole. Is more preferable, and 20 degrees or more is particularly preferable. From the viewpoint of facilitating the forward and backward rotation operation of the lever 46, the angle θx is preferably 45 degrees or less, more preferably 40 degrees or less, and particularly preferably 35 degrees or less. In the present embodiment, the angle θx is 30 degrees.

  In addition, the convex part m1 is provided in the lower surface opening line 94L. The convex portion m1 can alleviate a rapid inflow of hot water or water into the flow path forming concave portion 94 when shifting from the water stop state to the discharge state. Therefore, these convex-shaped parts m1 contribute to suppression of a water hammer.

  24B, 24C, and 24D are modified examples of the lower surface opening line 94L. As shown in FIG. 24C, the straight portion ST may not be provided. Further, as shown in FIG. 24D, straight portions ST may be provided on both the hot water valve hole 80 side and the water valve hole 82 side. Depending on the shape of the lower surface opening line 94L, the water discharge specification can be changed.

  The configuration that realizes the inclination of the linear direction D1 with respect to the front-rear direction D2 is the movement direction regulating mechanism described above. 25 (a) and 25 (b) are cross-sectional views of the lever assembly 40 in the water discharge state. FIG. 25A is a cross-sectional view along the upper surface of the upper member 86, and FIG. 25B is a cross-sectional view along the vertical direction of the shaft hole 100 of the lever 46. FIGS. 25C and 25D are cross-sectional views of the lever assembly 40 in a water stop state. FIG. 25C is a cross-sectional view along the upper surface of the upper member 86, and FIG. 25D is a cross-sectional view along the vertical direction of the shaft hole 100 of the lever 46. In FIGS. 25B and 25D, the description of members inside the shaft hole 100 is omitted.

  As shown in FIGS. 25A and 25C, a gap Gp is provided between the lower end portion (hatched portion) of the lever 46 and the lever engaging recess 98. As described above, the movement direction of the lower end portion of the lever 46 is the front-rear direction D2 by the front-rear rotation of the lever 46, but the movement direction of the movable valve body 60 (upper member 86) is the linear direction D1. The gap Gp allows the movable valve body 60 to move along the linear direction D1. Although the linear direction D1 and the front-rear direction D2 are different due to the presence of the gap Gp, the lower end of the lever 46 does not hinder the movement of the movable valve body 60.

  As shown in FIG. 25A, in the state where the discharge amount is maximum, the gap Gp is located on the right side of the lever 46 as viewed from the user side of the hot water / water mixing tap 10, and in this case, on the left side of the lever 46 There is substantially no gap Gp. On the other hand, as shown in FIG. 25 (c), in the water stop state, the gap Gp is located on the left side of the lever 46 as viewed from the user side of the hot water mixing tap 10, and in this case, on the right side of the lever 46. There is substantially no gap Gp. With these configurations, the size of the gap Gp is minimized. Although not shown, in the intermediate state between the maximum water discharge and the water stop, the gap Gp exists on the right side and the left side of the lever 46 when viewed from the user side of the hot water mixing tap 10. In FIG. 25A, what is indicated by reference sign G1 is the gap distance on the right side of the lever 46. In FIG. 25C, the reference symbol G2 indicates the gap distance on the left side of the lever 46. [G1 + G2] is constant regardless of the position of the lever 46 in the vertical direction.

  The lever engaging recess 98 has a first side surface 98a and a second side surface 98b (see FIGS. 13A, 25B, and 25D). The first side surface 98a is a plane. The second side surface 98b is a plane.

  The lower end portion of the lever 46 has a first curved surface Rs1 and a second curved surface Rs2. The first curved surface Rs1 and the second curved surface Rs2 are convex curved surfaces.

  In the longitudinal rotation of the lever 46, the first curved surface Rs1 is in contact with the first side surface 98a. This contact (referred to as contact 1) is a line contact. When the lever 46 is rotated to the discharge side, the first curved surface Rs1 pushes the first side surface 98a, and the movable valve body 60 moves. The position of the line contact moves up and down depending on the position of the lever rotating back and forth, but the line contact is maintained regardless of the position of the lever rotating back and forth.

  In the longitudinal rotation of the lever 46, the second curved surface Rs2 is in contact with the second side surface 98b. This contact (referred to as contact 2) is a line contact. When the lever 46 is turned to the water stop side, the second curved surface Rs2 pushes the second side surface 98b, and the movable valve body 60 moves. The position of the line contact moves up and down depending on the position of the lever rotating back and forth, but the line contact is maintained regardless of the position of the lever rotating back and forth.

  As described above, the contact position moves as the lever rotates back and forth, but the first curved surface Rs1 and the second curved surface Rs2 reduce the frictional resistance associated with the movement of the contact position. Therefore, smooth lever operation is realized.

  In the cross section of the plane perpendicular to the rotation axis of the lever 46, the cross section line of the first curved surface Rs1 is an arc (referred to as an arc 1), and the radius of the arc 1 is r1. In the cross section of the plane perpendicular to the rotation axis of the lever 46, the cross section line of the second curved surface Rs2 is an arc (arc 2), and the radius of the arc 2 is r2. The radius r1 is equal to the radius r2. The center of the arc 1 and the center of the arc 2 are the same. That is, the arc 1 and the arc 2 are on the same circumference.

  In FIG. 25D, a double arrow d1 indicates the diameter of a circle including the arc 1 and the arc 2. In FIG. 25A, a double arrow d3 indicates the distance between the first side surface 98a and the second side surface 98b. From the viewpoint of suppressing play and rattling in the lever back-and-forth rotation operation, the difference (d3-d1) is preferably 0.2 mm or less, more preferably 0.1 mm or less, and particularly preferably 0.05 mm or less. From the viewpoint of relaxing the dimensional accuracy, the difference (d3−d1) is preferably 0 mm or more, more preferably 0.01 mm or more, and particularly preferably 0.02 mm or more.

  The first curved surface Rs1 and the second curved surface Rs2 are both part of the same cylindrical surface (hereinafter referred to as a virtual cylindrical surface). The central axis Cz of the virtual cylindrical surface is perpendicular to the front-rear direction D2. The central axis Cz is parallel to the central axis of the lever 46 that rotates forward and backward. Even if the movable valve body 60 moves along the linear direction D1, the first side surface 98a and the second side surface 98b are always in contact with the virtual cylindrical surface. That is, the contact between the first side surface 98a and the first curved surface Rs1 is maintained even though the linear direction D1 and the front-rear direction D2 are different. Similarly, the contact between the second side surface 98b and the second curved surface Rs2 is maintained even though the linear direction D1 and the front-rear direction D2 are different. Moreover, these contacts are always line contacts. Accordingly, the difference between the linear direction D1 and the front-rear direction D2 is realized, and the stable contact between the lever engaging recess 98 and the lower end portion of the lever 46 is maintained over the entire vertical rotation range of the lever. ing. Moreover, since the contact form is a line contact, the frictional resistance is suppressed. The direction of these line contact lines is along the relative movement direction between the side surfaces 98a and 98b and the curved surfaces Rs1 and Rs2. Therefore, the frictional resistance is suppressed. With these configurations, the lever 46 can be rotated back and forth smoothly and stably.

  Since the movable valve body 60 moves in a linear direction D1 that is different from the front-rear direction D2, horizontal sliding occurs between the first curved surface Rs1 and the first side surface 98a. The shape of the first curved surface Rs1 reduces the frictional resistance associated with this sliding and realizes a smooth lever operation. Similarly, horizontal sliding occurs between the second curved surface Rs2 and the second side surface 98b. The shape of the second curved surface Rs2 reduces the frictional resistance associated with this sliding and realizes smooth lever operation.

  Note that the depth of the recess 96 (see FIGS. 8 and 21A) is such that the lower end of the lever 46 and the movable valve body 60 (upper member 86) do not contact with each other in the entire range of forward and backward rotation of the lever 46. Is set to This facilitates the operation of turning the lever 46 back and forth.

  The smooth left / right rotation of the lever 46 increases the sensitivity of the left / right click feeling. For example, a minute left-right click feeling is easily recognized. Therefore, the degree of freedom for setting the left-right click feeling can be improved. The smooth back-and-forth rotation of the lever 46 increases the sensitivity of the back-and-forth click feeling. For example, a minute back-and-forth click feeling is easily recognized. Therefore, the degree of freedom for setting the back-and-forth click feeling can be improved.

  In FIG. 25D, a double arrow d2 indicates the distance between the rear end (end on the water stop side) of the shaft hole 100 of the lever 46 and the second side face 98b. This distance d2 is measured along a direction perpendicular to the second side surface 98b. This distance d2 is substantially equal to the diameter d1. The absolute value of the difference (d1−d2) is set within 0.05 mm. That is, d2 = d1 ± 0.05 mm. This dimensional relationship contributes to the downsizing of the lever 46 and the movable valve body 60. The horizontal position of the shaft hole 100 is between the first side surface 98a and the second side surface 98b with respect to the entire range of the lever 46 in the longitudinal direction.

  As described above, in the above embodiment, the click feeling in the front-rear rotation (front-rear click feeling) differs depending on the lever left-right position. In the above embodiment, the difference between the front and rear click feelings is the presence or absence of the front and rear click feeling. It is easy to determine whether there is a back-and-forth click feeling. In the above embodiment, whether hot water is mixed or not is easily determined based on the presence or absence of a back-and-forth click feeling.

  It may be difficult to determine whether hot water is mixed based only on the temperature of the discharged water. For example, when the mixing ratio of hot water is small, the temperature is not so high as compared with the case where water is 100%. Therefore, in this case, mixing of hot water may not be noticed only from the temperature of the discharged water. Even when the mixing ratio of hot water is high, the temperature of the discharged water may not rise until the hot water heated by a heating device such as a water heater reaches the faucet. Also in this case, the mixing of hot water may not be noticed only from the temperature of the discharged water. Also, depending on the circumferential position of the handle 14, it may not be possible to accurately determine whether hot water is mixed. In such a case, hot water may be mixed against the user's intention. That is, although the user intends to use water discharged without hot water (100% water), hot water may actually be mixed. In this case, energy is wasted. In the above embodiment, whether hot water is mixed or not is easily determined based on the presence or absence of a back-and-forth click feeling. Therefore, waste of energy is suppressed.

  In the present embodiment, by changing the specification of the lower surface of the housing 42 (the lower surface 125 of the connecting portion 124), the angular range in which a click feeling can be generated can be freely designed. For example, by changing the position of the click mechanism expression unit 146, the left / right position of the lever where the back-and-forth click feeling is expressed can be freely changed (see FIG. 10). Therefore, for example, the click mechanism expression unit 146 and the click non-expression unit 148 in FIG. 10 can be interchanged. In this case, the back-and-forth click feeling does not appear in the hot water mixed discharge range, and the back-and-forth click feeling appears in the water discharge range.

  Furthermore, for example, the click mechanism expression part 146 can be provided also in the angle range Rf2, for example (see FIG. 10). Therefore, the click mechanism expression unit 146 may be provided only in the angle range Rf as in the present embodiment, may be provided in both the angle range Rf and the angle range Rf2, or may be provided only in the angle range Rf2. . Therefore, the degree of freedom in designing the back-and-forth click feeling and the left-right click feeling is high.

  The area of the lower surface of the housing 42 is relatively large. Therefore, the degree of freedom in designing the recesses and / or protrusions is high. By providing the housing 42 with a concave portion and / or a convex portion, the degree of freedom in designing the click feeling is enhanced.

  This click mechanism expression part 146 is not intermittent in the circumferential direction. Unlike this, the click mechanism expression part 146 may be provided intermittently in the circumferential direction. In this case, it is possible to intermittently provide a lever left-right position that produces a back-and-forth click feeling.

  This click mechanism expression part 146 is provided in the whole lever front-back rotation range. Unlike this, the click mechanism expression part 146 may be provided in a part of the lever front-rear rotation range. In this case, the lever front-rear range in which the front-rear click feeling is expressed can be limited.

  Also, the click feeling can be designed freely. For example, various click feelings can be obtained by changing the number, interval, shape, height, and the like of the grooves 154 or the protrusions 156. The number of grooves 154 and / or protrusions 156 can determine the number N of times described below. By using the lower surface of the housing 42 to create a click feeling, the degree of freedom in designing the click feeling is increased.

  As described above, by changing the form of the click mechanism expression unit 146, the back-and-forth click feeling and the left-and-right click feeling can be set in various ways. Therefore, setting of the back-and-forth click feeling and the right-and-left click feeling can be facilitated. Other modifications of the click mechanism expression unit 146 will be described later.

The presence or absence of a click feeling is easy to distinguish for the user. An example of the difference in click feeling is the presence or absence of a click feeling. The following is exemplified as the setting for the presence or absence of a click feeling. The following setting 1 is a setting in the above-described embodiment. Below, the mixing ratio of hot water and water is shown as a percentage (%).
[Setting 1]: There is no back-and-forth click feeling at the lever left-right position where the mixing ratio of water is 100%. In the lever left-right position where the mixing ratio of water is less than 100%, a back-and-forth click feeling is generated.
[Setting 2]: A front-rear click feeling is generated at the lever left-right position where the mixing ratio of water is 100%. In the lever left-right position where the water mixing ratio is less than 100%, there is no back-and-forth click feeling.

Another example of the difference in click feeling is as follows.
[Setting 3]: The back-and-forth click feeling is different between the lever left-right position where the water mixing ratio is 100% and the lever left-right position where the water mixing ratio is less than 100%.

In this setting 3, for example, there are two types of back-and-forth click feeling. Of course, there may be three or more types of back-and-forth click feeling, and one example is the following setting 4.
[Setting 4]: A first back-and-forth click feeling occurs at the lever left-right position where the water mixing ratio is 100%, and a second back-and-forth click feeling occurs at the lever left-right position where the water mixing ratio is greater than or equal to Wa% and less than 100%. And a third back-and-forth click feeling occurs at the lever left-right position where the mixing ratio of water is less than Wa%.

 For example, the mixing ratio Wa% may be set to such a ratio that the water temperature becomes dangerous when directly touched by a human body. In this case, whether or not hot hot water is discharged can be sensed by a click feeling.

The presence or absence of a click feeling and a difference in click feeling may be combined, and an example thereof is the following setting 5.
[Setting 5]: No back-and-forth click feeling is generated at the lever left-right position where the water mixing ratio is 100%, and the first back-and-forth click feeling is generated at the lever left-right position where the water mixing ratio is greater than or equal to Wa% and less than 100%. The second back-and-forth click feeling occurs at the lever left-right position where the mixing ratio of water is less than Wa%.

How to make the back-and-forth click feeling different is not limited. The following is exemplified as the specification of the back-and-forth click feeling that can be made different.
[Specification 1]: Number of back-and-forth click feeling when the lever is rotated from the discharge stop position to the maximum discharge position N
[Specification 2]: Resistance feeling when the lever is rotated back and forth when a back-and-forth click feeling occurs [Specification 3]: Sound when a back-and-forth click feeling occurs

  In an example related to the specification 1, the number N is 3 or less at a certain lever left-right position, and the number N is 4 or more at another lever left-right position. In an example relating to the specification 2, the resistance feeling is relatively small at a certain lever left-right position, and the resistance feeling is relatively large at another lever left-right position. As an example of the specification 3, the frequency of the sound is relatively high at a certain lever left-right position, and the sound frequency is relatively low at another lever left-right position.

  Note that the sense of resistance is synonymous with the rotational moment necessary to rotate the lever.

  The settings 1 to 5 and the specifications 1 to 3 can be easily realized only by changing the shape of the lower surface 125 of the connecting portion 124. The lever assembly 40 has a high degree of freedom in designing the click feeling.

  The click mechanism of the above embodiment has a configuration in which the elastic member 50 or the elastic member 58 holds the sphere. With this configuration, the degree of freedom in designing the click feeling is high. For example, the click feeling can be easily adjusted only by changing the elastic coefficients of the elastic members 50 and 58.

  When the diameters of the spheres 52 and 56 are changed, the protruding amount of the sphere toward the contact surface side can be changed. By using the spheres 52 and 56 for the expression of the click mechanism, a change in the click feeling can be achieved simply by changing the diameter of the sphere. Therefore, the click feeling can be easily adjusted.

  In the embodiment of FIG. 18, the degree of freedom in designing the left-right click feeling is further increased. In this embodiment, even if the coil spring 200 is not changed, the left-right click feeling can be designed only by changing the length of the intermediate member 202. Therefore, it is possible to easily set the left-right click feeling. By adopting the intermediate member 202, the coil spring 200 can be shortened. This shortness can facilitate the design of a left-right click feeling.

  In the above embodiment, the housing 42 is integrally formed as a whole. The housing 42 may be a combination of separately molded members. A member belonging to the fixing member Z and capable of coming into contact with the sphere 52 or the sphere 56 corresponds to a housing.

  A double arrow L1 in FIG. 15 indicates the length in the longitudinal direction of the elastic member 50 in a state where the sphere 52 is not engaged with the convex portion 170. If the diameter of the upper part 104 is too small, the function required for the hot and cold water mixing tap 10 may not be realized. In this respect, the length L1 is preferably 15 mm or more, and more preferably 17 mm or more. Moreover, in the hot water / water mixing tap 10 which is excessively enlarged, the commercial value is lowered. In this respect, the length L1 is preferably 30 mm or less, and more preferably 25 mm or less. In the embodiment of FIG. 15, the length L1 is 19 mm.

  In FIG. 18, what is indicated by a double-headed arrow L <b> 2 is the longitudinal length of the elastic member 200 in a state where the sphere 52 is not engaged with the convex portion 170. From the viewpoint of obtaining a smooth left-right click feeling, the ratio of the length L2 to the length L1 is preferably 5% or more, more preferably 10% or more, and still more preferably 20% or more. From the viewpoint of facilitating the design of the left-right click feeling, the ratio of the length L2 to the length L1 is preferably 45% or less, more preferably 40% or less, and even more preferably 35% or less. In the embodiment of FIG. 18, the ratio of the length L2 is 30% with respect to the length L1 of the embodiment of FIG.

  From the viewpoint of obtaining a clear left-right click feeling, the height Ha of the convex portion 170 (see FIG. 15) is preferably 0.05 mm or more, more preferably 0.1 mm or more, and further preferably 0.15 mm or more. When the height Ha is excessive, the thickness of the housing 42 or the rotating body 44 becomes too thin, and the durability can be lowered. In this respect, the height Ha is preferably equal to or less than 1.0 mm, more preferably equal to or less than 0.5 mm, and still more preferably equal to or less than 0.4 mm. In the said embodiment, height Ha of the convex part 170 was 0.3 mm.

  From the viewpoint of obtaining a clear back-and-forth click feeling, the height Hb of the convex portion 156 (depth Dv of the groove 154) is preferably 0.05 mm or more, more preferably 0.1 mm or more, and further preferably 0.15 mm or more. When the height Hb is excessive, the thickness of the housing 42 or the rotating body 44 becomes too thin, and the durability can be lowered. In this respect, the height Hb (depth Dv) is preferably equal to or less than 1.0 mm, more preferably equal to or less than 0.5 mm, and still more preferably equal to or less than 0.4 mm. In the above embodiment, the height Hb of the convex portion 156 is 0.3 mm.

  From the viewpoint of ease of assembly and the viewpoint of obtaining a clear left-right click feeling, the diameter Pa of the sphere 52 is preferably 1.0 mm or more, more preferably 2.0 mm or more, and even more preferably 3.0 mm or more. When the diameter Pa is excessive, the diameter of the lever shaft 48 may be excessive or the lever assembly 40 may be excessively enlarged. Moreover, in order to avoid this enlargement, the housing 42 and the like can be excessively thinned. From these viewpoints, the diameter Pa is preferably 5.0 mm or less, and more preferably 4.0 mm or less. In the above embodiment, the diameter Pa of the sphere 52 is set to 3.0 mm.

  From the viewpoint of easy assembly and a clear back-and-forth click feeling, the diameter Pb of the sphere 56 is preferably 1.0 mm or more, more preferably 2.0 mm or more, and even more preferably 3.0 mm or more. When the diameter Pb is excessive, the width of the through hole 110 for securing the height of the upper protrusion is excessive. If the diameter Pb is excessive, the width of the groove 154 that can be engaged with the sphere 56 is also increased. In this case, the necessary number of grooves 154 may be provided on the lower surface 125 of the limited space. It can be difficult. From these viewpoints, the diameter Pb is preferably 5.0 mm or less, and more preferably 4.0 mm or less. In the above embodiment, the sphere 56 has a diameter Pb of 3.0 mm.

  Resin and metal are illustrated as a material of a housing. This resin includes a fiber reinforced resin. The sound generated when the click mechanism appears is preferably comfortable and easy to hear. The material of the housing affects this sound. In view of obtaining good sound, durability, rust resistance, and hygiene, stainless steel alloy and fiber reinforced resin are preferable as the housing material. In the above embodiment, a glass fiber reinforced PPS resin is used. PPS resin is polyphenylene sulfide resin.

  Resin and metal are illustrated as a material of a rotary body. This resin includes a fiber reinforced resin. An unpleasant sound may be generated if metals slide during lever operation. In addition, since the material of the sliding surface fluctuates the frictional force, it affects the operability of the lever. From the viewpoint of operability and avoiding unpleasant noise, the material of the rotating body is preferably a resin, and more preferably a resin not containing reinforcing fibers. In the above embodiment, a POM resin not containing reinforcing fibers was used. POM resin is polyacetal resin.

  Examples of the material of the shaft holder include resin and metal. This resin includes a fiber reinforced resin. An unpleasant sound may be generated if metals slide during lever operation. In addition, since the material of the sliding surface fluctuates the frictional force, it affects the operability of the lever. From the viewpoints of operability and avoidance of unpleasant noise, the material of the shaft holder is preferably a resin, and more preferably a resin that does not contain reinforcing fibers. In the above embodiment, a POM resin not containing reinforcing fibers was used.

  Examples of the material of the sphere include resin and metal. From the viewpoint of the sound and durability of the click mechanism, metal is particularly preferable. In the above embodiment, a stainless alloy is used.

  Examples of the elastic body used in the click mechanism during the turning operation include rubber and a coil spring. A coil spring is preferable from the viewpoint of suppressing deterioration due to repeated use and from the viewpoint of freedom in adjusting the click feeling. As a material of this coil spring, a spring steel material is preferable. In the above embodiment, a coil spring made of spring steel is used.

  Examples of the elastic body used in the click mechanism during the forward / backward rotation operation include rubber, a leaf spring, and a coil spring. From the viewpoint of suppressing the space in the vertical direction, a leaf spring is preferable. In the above embodiment, a spring spring made of spring steel is used.

  Examples of the material of the lever shaft include resin and metal. This resin includes a fiber reinforced resin. From the viewpoint of suppressing water corrosion, stainless steel alloys and resins are preferred. In the above embodiment, a stainless alloy is used.

  Resin and metal are illustrated as a material of the upper member of a movable valve body. This resin includes a fiber reinforced resin. An unpleasant sound may be generated if metals slide during lever operation. From the viewpoint of avoiding unpleasant noise, the upper member is preferably made of resin. Moreover, the manufacturing cost as the whole movable valve body is suppressed by using this upper member as resin. In the above embodiment, a POM resin not containing reinforcing fibers was used.

  Examples of the material of the lower member of the movable valve body include resin (including fiber reinforced resin), metal, and ceramic. From the viewpoint of wear resistance in sliding with the fixed valve body, ceramic is preferable. This ceramic is also preferable from the viewpoints of corrosiveness to water, strength and durability. In the above embodiment, ceramic is used. The effect a and the effect b are further improved by the lower surface of the movable valve body being made of ceramic.

  Examples of the material of the fixed valve body include resin (including fiber reinforced resin), metal, and ceramic. From the viewpoint of wear resistance in sliding with the movable valve body (lower member), ceramic is preferable. This ceramic is also preferable from the viewpoints of corrosiveness to water, strength and durability. In the above embodiment, ceramic is used. Since the upper surface of the fixed valve body is made of ceramic, the effects a and b are further improved.

  Examples of the material of the packing and the O-ring include a resin and a rubber material (vulcanized rubber). The stretchability improves the assemblability and can reduce manufacturing errors (such as dimensional errors). From these viewpoints, a rubber material is preferable. In the above embodiment, a rubber material is used.

  Examples of the material of the base body include resin (including fiber reinforced resin) and metal. From the viewpoint of avoiding unpleasant noise and strength, a fiber reinforced resin is preferable, and a glass fiber reinforced resin is more preferable. In the above embodiment, a glass fiber reinforced PPS resin is used.

  When a resin is used as the material of each of the above members, a POM resin and a PPS resin are preferable. POM resin has little change over time in mechanical properties (such as tensile strength) when used for a long time and in a wide temperature range. Moreover, the POM resin is excellent in fatigue resistance against repeated stress loads. Furthermore, in the POM resin, the dimensional change due to water absorption is small. PPS resin is excellent in strength and rigidity, and is excellent in wear resistance. Furthermore, the PPS resin has a small shrinkage rate at the time of molding, and can achieve high dimensional accuracy. In order to further enhance these properties, the resin is preferably reinforced with short fibers such as glass fibers.

  FIG. 26 shows a hot and cold water mixing tap according to another embodiment. As described above, RT1 indicates an angle range in which hot water is not mixed, and RT2 indicates an angle range in which hot water and water are mixed or water is not mixed (hot water is 100%). In the present embodiment, the boundary K1 between the angle range RT1 and the angle range RT2 is located on the left side of the front position S1. Therefore, even when the lever left-right position is deviated from the front position S1, only water can be discharged. For this reason, unintended mixing of hot water is suppressed, which can contribute to energy saving. In FIG. 26, a double arrow θk indicates an angle between the front position S1 and the boundary K1. From the viewpoint of energy saving, the angle θk is preferably 2 degrees or more, more preferably 5 degrees or more, and still more preferably 8 degrees or more. If the angle range RT2 is excessively narrow, the water discharge temperature may be difficult to adjust. In this respect, the angle θk is preferably 20 degrees or less, more preferably 15 degrees or less, and still more preferably 12 degrees or less. However, any angle θk is possible depending on the application.

  The circumferential position (angle θk) of the boundary K1 is adjusted by, for example, the angle θx described above. Of course, the angle θk may be adjusted by the position, shape, etc. of each valve hole and the flow path forming recess.

  27, 28 (a), and 28 (b) show a housing 420 according to a modification. The difference between the housing 420 and the housing 42 described above is only the cross-sectional shape of the click mechanism expression portion 146.

  FIG. 28A is a cross-sectional view taken along the line AA in FIG. FIG. 28B is a cross-sectional view along the line BB in FIG. In the housing 420, the depth Dv of the groove 154 (the height Hb of the protrusion 156) differs depending on the circumferential position. The depth Dv in FIG. 28B is larger than the depth Dv in FIG. The back-and-forth click feeling is different due to the difference in the depth Dv. The greater the depth Dv, the greater the back-and-forth click feeling (for example, operational resistance, vibration, sound, or a combination thereof). The difference in the depth Dv can be set in various ways. The depth Dv may change gradually (continuously) in the circumferential direction, or may change stepwise (non-continuously) in the circumferential direction. Further, the depth Dv may increase as the temperature increases, or the depth Dv may increase as the temperature decreases.

With the housing 420, the following difference (A) is achieved.
(A) The back-and-forth click feeling differs depending on the lever left-right position.

  Note that when the depth Dv is changed discontinuously, a left-right click feeling may occur due to the discontinuous change (step difference or the like). Moreover, in the click mechanism expression part 146, a recessed part and / or a convex part may be provided locally in the circumferential direction. This concave part and / or convex part can express a left-right click feeling. In this manner, the click mechanism expression unit 146 can generate not only a back-and-forth click feeling but also a left-right click feeling.

FIG. 29 shows a housing 421 which is still another modified example. In the housing 421, the depth Dv of the groove 154 (the height of the protrusion 156) differs depending on the radial position of the housing 421. In the embodiment of FIG. 29, the depth Dv increases toward the outer side in the radial direction. The difference in the depth Dv can be set in various ways. The depth Dv may be increased toward the outer side in the radial direction or may be decreased toward the outer side in the radial direction. In this embodiment, the following difference (B) is achieved.
(B) The back-and-forth click feeling differs depending on the lever front-rear position.

  The configuration of the housing 420 and the configuration of the housing 421 may be combined. That is, the depth Dv may be different depending on the circumferential position and may be different depending on the radial position. By this combination, various click feelings can be expressed.

30 is a cross-sectional view showing a modification of the embodiment of FIG. In this embodiment, the height of the convex portion 170 differs depending on the circumferential position. In this embodiment, it has the convex part 170a which has 1st height H1, the convex part 170b which has 2nd height H2, and the convex part 170c which has 3rd height H3. In the present embodiment, the magnitude relationship between the heights is H3>H2> H1. The aspect of the height difference is not limited, and examples thereof include H3 <H2 <H1, H3 <H2> H1, and H3> H2 <H1. Due to the difference in height, for example, the left-right click feeling can be increased as the temperature increases, or the left-right click feeling can be increased as the temperature decreases. Further, the left-right click feeling can be maximized at a specific lever left-right position. Various left and right click feelings can be obtained by changing the number and height of the convex portions. Of course, it may replace with the convex part from which height differs, and the recessed part from which depth differs may be employ | adopted. In this embodiment, the following difference (C) is achieved.
(C) The left-right click feeling differs depending on the lever left-right position.

Here, the classification of the members X, Y and Z will be described. The members constituting the lever assembly 40 can be classified into the following three types.
(1) Member X: A member that rotates in conjunction with the left-right rotation of the lever and moves in conjunction with the front-rear rotation of the lever.
(2) Member Y: A member that rotates in conjunction with the left-right rotation of the lever, but does not move due to the front-rear rotation of the lever.
(3) Fixing member Z: a member that does not move (does not move or rotate) with respect to any operation of the lever.

  Examples of the member X of (1) include the movable valve body 60 (the upper member 86 and the lower member 88). As the member Y of the above (2), a rotating body 44 is exemplified. Examples of the fixing member Z of (3) include a housing 42, a fixed valve body 62, and a base body 68.

  In the above embodiment, the back-and-forth click feeling can be made different depending on the lever left-right position. In the above embodiment, the back-and-forth click mechanism is realized by the engagement between the member X and the fixing member Z.

  In order to change the forward / backward rotation of the lever 46 to the linear movement of the movable valve body 60, it is preferable that the rotating body 44 does not move during the forward / backward rotation of the lever 46. On the other hand, in order to transmit the turning of the lever 46 to the movable valve body 60, the rotating body 44 is preferably rotated by the turning of the lever 46. The rotating body 44 (member Y) is positioned above the member X (movable valve body 60). That is, the rotating body 44 (member Y) is interposed between the member X (movable valve body 60) and the lower surface of the member Z (housing 42). Therefore, it is difficult to engage the member X and the member Z. However, in the present embodiment, the engagement between the member X (movable valve body 60) and the member Z (housing 42) is realized regardless of the presence of the member Y (rotating body 44). With this configuration, the back-and-forth click feeling can be made different depending on the lever left-right position.

  The back-and-forth click mechanism can be configured, for example, between members that move relative to each other as the lever rotates back and forth. Examples of the relative moving member include a combination of the member X and the fixing member Z. Preferably, a back-and-forth click mechanism is configured between the member X and the fixed member Z. For example, by providing a concave portion and / or a convex portion and a retracting mechanism between the member X and the fixing member Z, a back-and-forth click mechanism can be realized. The exit / retreat mechanism may be provided in the member X or may be provided in the fixed member Z. The concave portion and / or the convex portion may be provided in the member X or may be provided in the fixing member Z. From the viewpoint of the degree of freedom of design of the click feeling, it is preferable that the degree of freedom of design of the concave portion and / or the convex portion is high. From this viewpoint, it is preferable that the installation area of the concave portion and / or the convex portion is wide. From the viewpoint of the installation area, the concave portion and / or the convex portion are preferably provided in the fixing member Z, and more preferably provided in the housing 42.

In the above embodiment, the movable valve body 60 (upper member 86) is employed as an example of the member X related to the front-rear click mechanism. In the above-described embodiment, the housing 42 is employed as an example of the fixing member Z related to the back-and-forth click mechanism. In the above-described embodiment, a combination of an elastic body and a contact member (sphere) is employed as an example of a retracting mechanism. For example, the following modes (A) and / or (B) can be realized by providing a plurality of concave portions and / or convex portions and varying the depth of the concave portions and / or the height of the convex portions.
(A) The back-and-forth click feeling differs depending on the lever left-right position.
(B) The back-and-forth click feeling differs depending on the lever front-rear position.

  As described above, the back-and-forth click mechanism can be configured between members that move relative to each other as the lever rotates back and forth. Therefore, the combination of the member X and the fixing member Z for configuring the back-and-forth click mechanism is not limited to the above embodiment. For example, a back-and-forth click mechanism may be configured between the movable valve body 60 (lower member 88) and the fixed valve body 62.

  Examples of configurations that can realize this mode (A) are the housing 42 shown in FIG. 10 and the like, and the housing 420 shown in FIG. 27, FIG. 28 (a), and FIG. 28 (b). An example of a configuration that can realize this mode (B) is a housing 421 shown in FIG.

The left-right click mechanism can be configured between members that rotate relative to each other as the lever rotates left and right, for example. Examples of the relatively rotating member include a combination of the member Y and the fixing member Z. Preferably, a left-right click mechanism is configured between the member Y and the fixed member Z. For example, a left and right click mechanism can be realized by providing a concave portion and / or a convex portion and a retracting mechanism between the member Y and the fixing member Z. In the above embodiment, the rotating body 44 is employed as an example of the member Y related to the left-right click mechanism. In the above embodiment, the housing 42 is employed as an example of the fixing member Z related to the left-right click mechanism. In the said embodiment, the combination of an elastic body and a spherical body is employ | adopted as an example of an exit / retreat mechanism. Then, for example, the following mode (C) can be realized by providing a plurality of concave portions and / or convex portions and varying the depth of the concave portions and / or the height of the convex portions.
(C) The left-right click feeling differs depending on the lever left-right position.

  An example of a configuration capable of realizing this mode (C) is the embodiment shown in FIG.

The following mode (D) is also possible.
(D) The left-right click feeling differs depending on the lever front-rear position.
An example of a configuration that can realize this mode (D) is the following (Dx).
(Dx) In the embodiment shown in FIGS. 10 and 11, a convex portion and / or a concave portion is provided inside the groove 154, and the circumferential position and / or shape of the convex portion and / or the concave portion is different for each groove 154. Make it.

  Thus, in this embodiment, the back-and-forth click mechanism is configured using the relative movement between the member X and the fixed member Z. Therefore, the degree of freedom in designing the back and forth click feeling can be increased. Further, the left-right click mechanism is configured by utilizing relative rotation between the member Y and the fixed member Z. Therefore, the degree of freedom in designing the left-right click feeling can be increased.

  When the back-and-forth click mechanism is configured using the relative movement between the member X and the fixing member Z, the member X and the fixing member Z are preferably in direct contact with each other. Other members may be interposed therebetween. In this case, a back-and-forth click mechanism using relative movement between the member X and the fixing member Z can be realized by providing a through hole in the other member, for example. An example of the through hole is the above-described through hole 110. Similarly, the left-right click mechanism between the member Y and the fixed member Z may be possible even if the member Y and the fixed member Z are not in direct contact.

  The feeling of clicking is perceived by a person. The click feeling can provide the user with various information that cannot be obtained visually. Preferably, the click feeling is sensed by hearing and / or tactile sense. From the viewpoint of enhancing the sensitivity, hearing and touch may be used in combination. Sound is an example of a sense of click sensed by hearing. Examples of the click feeling detected by tactile sensation include change in resistance and vibration during lever operation. The duration of the click feeling is not limited. A typical click feeling includes a resistance change and a sound for a relatively short time, but a click feeling for a relatively long time is also possible.

There are various types of information that can be obtained by clicking. The following is exemplified as this information.
[Information 1]: Information about water discharge temperature [Information 2]: Information about discharge amount [Information 3]: Information about presence / absence of hot water mixing [Information 4]: Information about lever front / rear position [Information 5]: Information about lever left / right position

Examples of the click feeling related to the information 1 include the following.
[1a]: Left-right click feeling that informs that the water discharge temperature is high [1b]: Left-right click feeling that informs that the water discharge is only water (no hot water is mixed) [1c]: Change in the water discharge temperature stepwise Multiple left and right click feelings to be notified [1d]: Click feeling before and after notifying that water discharge temperature is high [1e]: Click feeling before and after notifying that water discharge is only water (no hot water mixed)

  The left-right click feeling 1a can contribute to, for example, suppressing unintended high-temperature water discharge. The left-right click feeling 1b can contribute to energy saving, for example. The left-right click feeling 1c can be easily set to a desired temperature, for example. The back-and-forth click feeling 1d can contribute to, for example, avoiding excessively high water discharge. The back-and-forth click feeling 1e can contribute to energy saving, for example.

Examples of the click feeling related to the information 2 include the following.
[2a]: A click feeling before and after notifying that the discharge amount at which the water heater operates is reached [2b]: A plurality of click feelings before and after informing a change in the discharge amount step by step

  The back-and-forth click feeling 2a can contribute to energy saving, for example. The back-and-forth click feeling 2b can contribute to avoiding an unintended discharge amount, for example.

Examples of the click feeling related to the information 3 include the following.
[3a]: Left-right click feeling expressed at the boundary K1 [3b]: Left-right click feeling expressed near the boundary K1

  The left-right click feeling 3a can contribute to energy saving, for example. The left-right click feeling 3b can contribute to energy saving, for example.

  Examples of the vicinity of the boundary K1 in 3b include within ± 10 degrees of the boundary K1, within ± 7 degrees of the boundary K1, within ± 5 degrees of the boundary K1, within ± 3 degrees of the boundary K1, and the like.

Examples of the information related to the information 4 include the following.
[4a]: Front / rear click feeling informing that the lever front / rear position is approaching the maximum discharge position [4b]: Front / rear click feeling informing that the lever front / rear position is the maximum discharge position

  The back-and-forth click feelings 4a and 4b can contribute to alleviating the impact when the lever reaches the limit position, for example. This mitigation of impact can suppress deterioration associated with repeated use.

Examples of the information related to the information 5 include the following.
[5a]: Left-right click feeling that informs that the lever left-right position is approaching the right limit MR [5b]: Left-right click feeling that informs that the lever left-right position is approaching the left limit ML [5c]: Lever left-right position is Left-right click feeling that informs that it is the right limit MR [5d]: Left-right click feeling that informs that the lever left-right position is the left limit ML

  The back-and-forth click feelings 5a, 5b, 5c and 5d can contribute to alleviating the impact when the lever reaches the limit position, for example. This mitigation of impact can suppress deterioration associated with repeated use.

  In the preferred embodiment of the hot and cold water mixing tap, the click feeling differs depending on the lever front-rear position and / or the lever left-right position. Due to this difference, more information can be transmitted to the user. Due to this difference, for example, one or more selected from the above information is effectively transmitted to the user. Therefore, a highly convenient hot and cold water mixing tap can be realized.

The following (A), (B), (C) and (D) are exemplified as the difference in the click feeling.
(A) The back-and-forth click feeling differs depending on the lever left-right position.
(B) The back-and-forth click feeling differs depending on the lever front-rear position.
(C) The left-right click feeling differs depending on the lever left-right position.
(D) The left-right click feeling differs depending on the lever front-rear position.

  A more preferred embodiment is at least one selected from (A), (B) and (C), or a combination of two or more.

  The aspect (A) can have various effects. This aspect (A) can give a user the information regarding water discharge temperature (mixing ratio of hot water). For example, making the back-and-forth click feeling more prominent as the mixing ratio of hot water increases helps to save energy. The operation of rotating the lever back and forth without changing the left / right position of the lever is frequently used in actual use. The aspect (A) is particularly preferable because an energy saving effect is exhibited in this high-frequency operation. Further, the water discharge temperature can be easily adjusted.

  The aspect (B) can have various effects. This aspect (B) can give the user information about the discharge amount. For example, making the back-and-forth click feeling more conspicuous as the discharge amount increases helps to save water resources and / or energy. Moreover, adjustment of the amount of water discharge can be made easy.

  The aspect (C) can have various effects. This aspect (C) can give a user the information regarding water discharge temperature (mixing ratio of hot water). For example, if the left-right click feeling becomes more prominent as the mixing ratio of hot water increases, it helps to save energy. Further, the water discharge temperature can be easily adjusted.

The following is illustrated as said aspect (A).
(A1) The back-and-forth click feeling is different between the water discharge position (100% water) and the hot water mixing discharge position (including 100% hot water).
(A2) The back-and-forth click feeling is different between the water discharge position (100% water), the hot water mixing discharge position with a high water ratio, and the hot water mixing discharge position (including 100% hot water) with a low water ratio. To do.
(A3) The back-and-forth click feeling is different between the water discharge position (water 100%), the hot water mixing discharge position (not including 100% hot water), and the hot water discharge position (hot water 100%).
(A4) Click back and forth between a water discharge position (100% water), a hot water mixing discharge position with a high water ratio, a hot water mixing discharge position with a low water ratio, and a hot water discharge position (100% hot water). The feeling is different. (A5) The back-and-forth click feeling is different between the water discharge position (water 100%), the hot water mixing discharge position with high usage frequency, and the hot water mixing discharge position (including 100% hot water) with low usage frequency. .
(A6) Water discharge position (100% water), hot water mixing discharge position with high usage frequency, hot water mixing discharge position with low usage frequency (not including 100% hot water), hot water discharge position (100% hot water) And click feeling are different.

  From the viewpoint of versatility, (A1), (A2) and (A3) are preferred. From the viewpoint of saving hot water, it is preferable to use (A1) which is simple and easy to see whether hot water is used. Further, when operability is important, (A2), (A3), (A4), (A5) and (A6) are preferable. In these (A2) to (A6), the amount of information obtained by the difference in click feeling is large, and the state of water discharge is easy to understand.

The following is illustrated as said aspect (C).
(C1) The left-right click feeling is different between the water discharge position (water 100%) and the hot water mixing discharge position (including hot water 100%).
(C2) The left-right click feeling is different between the water discharge position (water 100%), the hot water mixing discharge position with a high water ratio, and the hot water mixing discharge position (including 100% hot water) with a low water ratio. To do.
(C3) The left-right click feeling is different between the water discharge position (water 100%), the hot water mixing discharge position (not including 100% hot water), and the hot water discharge position (hot water 100%).
(C4) Left-right click between a water discharge position (water 100%), a hot water mixing discharge position with a high water ratio, a hot water mixing discharge position with a low water ratio, and a hot water discharge position (100% hot water) The feeling is different. (C5) The left-right click feeling is different between the water discharge position (water 100%), the hot water mixing discharge position with high usage frequency, and the hot water mixing discharge position (including 100% hot water) with low usage frequency. .
(C6) Water discharge position (100% water), hot water mixing discharge position with high usage frequency, hot water mixing discharge position with low usage frequency (not including 100% hot water), hot water discharge position (100% hot water) Left and right click feeling is different.

  From the viewpoint of versatility, (C1), (C2) and (C3) are preferable. From the viewpoint of saving hot water, (C1) is preferable because it is easy to understand whether hot water is used or not. In the case where operability is important, (C2), (C3), (C4), (C5) and (C6) are preferable. In these (C2) to (C6), the amount of information obtained by the difference in click feeling is large, and the state of water discharge is easy to understand.

The following (C11) may be combined with the above (C1).
(C11) A left-right click feeling appears at the boundary between the water discharge range and the hot water mixing discharge position.

The following (C21) may be combined with the above (C2).
(C21) A left-right click feeling kc1 appears at the boundary between the water discharge range and the hot water mixing / discharging range where the water ratio is high, and the boundary between the hot water mixing / discharging range where the water ratio is high and the hot water mixing / discharging range where the water ratio is low Left and right click feeling kc2 appears.

  In (C21), the left and right click feeling kc1 and the left and right click feeling kc2 may be different.

The following (C31) may be combined with the above (C3).
(C31) A left-right click feeling kc3 appears at the boundary between the water discharge range and the hot water mixing discharge range, and a left-right click feeling kc4 appears at the boundary between the hot water mixing discharge range and the hot water discharge range.

  In (C31), the left and right click feeling kc3 and the left and right click feeling kc4 may be different.

The following (C41) may be combined with the above (C4).
(C41) A left-right click feeling kc5 appears at the boundary between the water discharge range and the hot water mixed discharge range where the water ratio is high, and between the hot water mixed discharge range where the water ratio is high and the hot water mixed discharge range where the water ratio is low. A left-right click feeling kc6 appears, and a left-right click feeling kc7 appears between the hot water mixing discharge range and the hot water discharge range where the ratio of water is low.

  In (C41), at least two or all three selected from the left and right click feeling kc5, the left and right click feeling kc6, and the left and right click feeling kc7 may be different.

The following (C51) may be combined with the above (C5).
(C51) A left-right click feeling kc8 appears at the boundary between the water discharge range and the hot water mixing / discharging range where the usage frequency is high, and left / right at the boundary between the hot water mixing / discharging range where the usage frequency is high and the hot water mixing / discharging range where the usage frequency is not high Click feeling kc9 appears.

  In (C51), the left and right click feeling kc8 and the left and right click feeling kc9 may be different.

The following (C61) may be combined with the above (C6).
(C61) A left-right click feeling kc10 appears at the boundary between the water discharge range and the hot water mixing / discharging range where the usage frequency is high, and left / right at the boundary between the hot water mixing / discharging range where the usage frequency is high and the hot water mixing / discharging range where the usage frequency is not high A click feeling kc11 appears and a left-right click feeling kc12 appears between the hot water mixing discharge range and the hot water discharge range, which are not frequently used.

  In (C61), at least two or all three selected from the left and right click feeling kc10, the left and right click feeling kc11, and the left and right click feeling kc12 may be different.

  In the above aspect (A), it is preferable that the lever left-right position is divided into a plurality of ranges, and the back-and-forth click feeling is different for each of these ranges. In the above (C), it is preferable that the lever left-right position is divided into a plurality of ranges, and the left-right click feeling is different for each of these ranges. Further, as shown in the above (C11), (C21), (C31), (C41), (C51), and (C61), a left-right click feeling may be expressed at the boundaries of a plurality of divided ranges. Good. This left-right click feeling at the boundary can be combined with any aspect described in the present application.

The following is illustrated as a difference in the back-and-forth click feeling in the above aspects (A) and (B).
(X1) Presence or absence of back-and-forth click feeling (X2) Difference in feeling of back-and-forth click feeling (X3) Difference in number of back-and-forth click feelings (X4) Difference in back-and-forth click feeling (X5) From (X1) to (X4) 2 or more selected combinations

  From the viewpoint of emphasizing hot water saving, the difference (X1) in which the difference in the sense is remarkable is preferable. In addition, when it is desired to recognize a plurality of ranges at the lever left and right positions, it is preferable to increase the information obtained by the difference in the back-and-forth click feeling according to (X5), for example, the combination of the difference (X1) and the difference (X3) preferable.

  Examples of the sense of back-and-forth click are tactile sensations (such as resistance) and auditory sensations (sounds). Examples of the difference (X2) include a difference in resistance and a difference in sound. The difference in sound is exemplified by the difference in sound frequency.

  The difference (X2) can be realized, for example, by making the depth of the concave portion and / or the height of the convex portion different. The difference (X3) can be realized, for example, by making the number of concave portions and / or convex portions different. The difference (X4) can be realized, for example, by making the intervals between the concave portions and / or the convex portions different. The number of times in the difference (X3) is, for example, the number of times of forward / backward click feeling in the entire range of forward / backward rotation (the aforementioned number N).

  The present application also describes other inventions that are not included in the claimed invention (including independent claims). Respective forms, members, configurations, and combinations thereof described in the claims and embodiments of the present application are recognized as inventions based on the respective functions and effects.

  Each form, member, configuration, etc. shown in each of the above embodiments is not limited to all of the forms, members, or configurations of these embodiments. It can be applied to all described inventions.

  The present invention can be applied to a hot and cold water mixing tap for any application.

DESCRIPTION OF SYMBOLS 10 ... Hot water mixing tap 12 ... Mixing stopper main body 14 ... Handle 16 ... Discharge part 18 ... Hot water introduction pipe 20 ... Water introduction pipe 22 ... Discharge pipe 40 ... Lever Assembly 42 ... Housing 44 ... Rotating body 46 ... Lever 48 ... Lever shaft 50 ... Left and right click elastic member 52 ... Left and right click spherical body (contact member)
54 ... Shaft holder 56 ... Front and rear click sphere (contact member)
58 ... Elastic member for front and rear click 60 ... Movable valve element 62 ... Fixed valve element 64, 65 ... Packing 68 ... Base body 80 ... Valve hole for hot water 80L ... For hot water Upper surface opening line of valve hole 82 ... Water valve hole 82L ... Upper surface opening line of water valve hole 84 ... Mixed water valve hole 84L ... Upper surface opening line of mixed water valve hole 86 ..Upper member of movable valve element 88 ... Lower member of movable valve element 94 ... Flow path forming recess 98 ... Lever engaging recess 100 ... Lever shaft hole 106 ... Lever insertion hole 108 ... Shaft hole of rotating body 110 ... Spherical through-hole 170, 170a, 170b, 170c ... Projection 420 ... Housing 421 ... Housing PL1 ... Smoothing of upper surface of fixed valve body Surface PL2: Smooth surface of the lower surface of the movable valve body W1: First wall surface portion W2, .. second wall surface portion W3 ... third wall surface portion W4 ... fourth wall surface portion SL1 ... inclined surface of the first wall surface portion SL2 ... inclined surface of the second wall surface portion SL3 ... third Inclined surface of wall surface portion SL4 ... Inclined surface of fourth wall surface portion ST ... Straight portion X ... Area surrounded by upper surface opening line of hot water valve hole Y: Upper surface of water valve hole Area surrounded by opening line Z: Area surrounded by lower surface opening line of flow path forming recess XZ: Overlapping area of area X and area Z YZ: Overlapping area of area Y and area Z D1... Linear direction of movement of the movable valve element D2...

Claims (5)

Lever,
A temperature adjustment mechanism capable of adjusting the water discharge temperature by rotating the lever left and right;
A discharge amount adjusting mechanism capable of adjusting the discharge amount by rotating the lever back and forth;
A member X that rotates in conjunction with the left-right rotation of the lever and moves in conjunction with the front-rear rotation of the lever;
A fixing member Z that does not interlock with any operation of the lever;
A back-and-forth click mechanism that expresses a back-and-forth click feeling using the relative movement of the member X and the member Z along with the back-and-forth rotation of the lever;
With
The hot / cold mixing tap has different click feelings depending on the left / right position of the lever, and this difference is caused by the difference in the front / rear click mechanism. Lever,
A temperature adjustment mechanism capable of adjusting the water discharge temperature by rotating the lever left and right;
A discharge amount adjusting mechanism capable of adjusting the discharge amount by rotating the lever back and forth;
A member X that rotates in conjunction with the left-right rotation of the lever and moves in conjunction with the front-rear rotation of the lever;
A fixing member Z that does not interlock with any operation of the lever;
A back-and-forth click mechanism that expresses a back-and-forth click feeling using the relative movement of the member X and the member Z along with the back-and-forth rotation of the lever;
With
The hot and cold water mixing tap, in which the back-and-forth click feeling differs depending on the lever front-rear position, and this difference is due to the difference in the front-rear click mechanism. Lever,
A temperature adjustment mechanism capable of adjusting the water discharge temperature by rotating the lever left and right;
A discharge amount adjusting mechanism capable of adjusting the discharge amount by rotating the lever back and forth;
A member Y that rotates in conjunction with the lateral rotation of the lever and does not move by the longitudinal rotation of the lever;
A fixing member Z that does not interlock with any operation of the lever;
A left-right click mechanism that expresses a left-right click feeling using the relative rotation of the member Y and the fixing member Z with the left-right rotation of the lever;
With
The hot / cold mixing tap has different left / right click feeling depending on the lever front / rear position, and this difference is caused by the difference in the left / right click mechanism. Lever,
A temperature adjustment mechanism capable of adjusting the water discharge temperature by rotating the lever left and right;
A discharge amount adjusting mechanism capable of adjusting the discharge amount by rotating the lever back and forth;
A member X that rotates in conjunction with the left-right rotation of the lever and moves in conjunction with the front-rear rotation of the lever;
A fixing member Z that does not interlock with any operation of the lever;
With
Using the relative movement between the member X and the member Z, a front-rear click mechanism that is an engagement and a disengagement between the member X and the fixing member Z is configured,
One or more selected from the group consisting of the following (a), (b), (c), and (d), the hot and cold water mixing tap in which the lever differs depending on the left and right position.
(A) Presence / absence of the front / rear click mechanism (b) Number of occurrences of front / rear click feeling caused by the front / rear click mechanism in the entire range of the front / rear rotation (c) Interval in lever front / rear rotation of the front / rear click mechanism (d) Resistance in lever back-and-forth rotation of back-and-forth click mechanism Lever,
A temperature adjustment mechanism capable of adjusting the water discharge temperature by rotating the lever left and right;
A discharge amount adjusting mechanism capable of adjusting the discharge amount by rotating the lever back and forth;
A member X that rotates in conjunction with the left-right rotation of the lever and moves in conjunction with the front-rear rotation of the lever;
A fixing member Z that does not interlock with any operation of the lever;
With
Using the relative movement between the member X and the member Z, a front-rear click mechanism that is an engagement and a disengagement between the member X and the fixing member Z is configured,
One or more selected from the group consisting of the following (a), (c) and (d) is a hot and cold water mixing tap in which the position differs depending on the lever front and rear positions.
(A) Presence / absence of the front / rear click mechanism (c) Interval in the lever front / rear rotation of the front / rear click mechanism (d) Resistance force in the front / rear rotation of the front / rear click mechanism

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