JP3510407B2 - Single lever type hot water mixer tap - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single lever type hot and cold water mixing tap which can change the temperature and amount of hot water by operating one lever.

[0002]

2. Description of the Related Art A movable disk is superposed in a watertight and slidable manner on a fixed disk having a hot water inlet and a water inlet, and the movable disk is linearly reciprocated by the operation of a single lever. By opening and closing both inlets, the movable disk is rotated to change the opening area ratio of both inlets to adjust the mixing ratio (hot water temperature). Sho 55-12607
It is known from Japanese Patent Publication No. 0.

This prior art has a structure shown in FIGS. Reference numeral 1 denotes a fixed disk, and an oval bulging portion having a step of an appropriate height from the upper surface of the peripheral portion is formed on the upper surface at the center side, and the oval bulging portion is at the central portion in the longitudinal direction of the oval bulging portion and A hot water inflow hole 1a and a water inflow hole 1b are vertically penetrated at positions symmetrical with respect to the long axis. The hot water inflow hole 1a is provided in a water heater (not shown) and also in the water inflow hole 1b. Are respectively connected to water pipes (not shown). 1c is the center of the hot water inflow hole 1a and the water inflow hole 1b (FIG. 10).

Reference numeral 2 denotes a circular movable disk which is superposed on the fixed disk 1. A bottom surface of the disk is provided with a recess 2a capable of communicating with the hot water inflow hole and a recess 2b capable of communicating with the water inflow hole 1b. A partition 2c is formed between the recesses 2a and 2b,
A bottomed different diameter hole 2d is formed on the upper surface. 2e is the center of the movable disk 2 (FIG. 13).

Both the disks 1 and 2 are made of ceramic, and the sliding contact surface between them, that is, the upper surface of the oval bulging portion of the fixed disk 1 and the bottom surface of the movable disk 2 that is in contact with this are watertight. Polished to the extent possible.

Reference numeral 3 denotes a cylindrical body having an oval hole 3a, and the oval hole 3a is fixed on the fixed disk 1 in a state of being fitted to a step portion around the oval bulging portion. The movable disk 2 is set to have a diameter corresponding to the short diameter of the elliptical hole 3a, can freely rotate in the elliptical hole 3a, and can move in the minor axis direction on both sides of the elliptical hole 3a in the minor axis direction. Movement is restricted so that it can reciprocate only in the major axis direction. Reference numeral 3b denotes a hot and cold water outlet formed at one end of the cylindrical body 3 in the long axis direction, which is connected to a discharge pipe (not shown).

Reference numeral 4 denotes a disc retainer fitted into the elliptical hole 3a, and closes the gap formed between the peripheral side surface of the fixed disc 1 and the inner side surface of the elliptical hole 3a for the movable disc 2. Reference numeral 4a is an elongated hole provided in the disc retainer 4.

Reference numeral 5 is a lever support member provided so as to cover the disc retainer 4, and is fixed to the cylindrical body 3,
A lever 7 is supported on the member 5 via a spherical bearing portion 6.

[0009] 8 the two tubular members 8a which rotates the pivot pin P _1, P ₂ around which are orthogonal to each other, in a universal joint consisting 8b, while 8a is fixed to the proximal end of the lever 7, the other 8b is The different-diameter hole 2 has a cross-sectional shape corresponding to the different-diameter hole 2d so that only the rotational force is transmitted to the movable disk 2.
It is fitted so as to be slidable only in the axial direction with respect to d.

Next, the operation of the conventional single lever type hot and cold water mixing valve will be described. When the lever 7 is on the imaginary line 7'in FIG. 9, the movable disk 2 is moved to the position shown in FIG.
Position, and the hot water inflow hole 1a and the water inflow hole 1b are closed.

When the lever 7 is tilted to the position shown by the phantom line 7 "in FIG. 9, the movable disk 2 moves to the position shown in FIG. 19B, and the hot water inflow hole 1a and the water inflow hole 1b are both recessed portions 2a.
And 2b, respectively, so that each inflow hole 1a, 1b
The inflowing hot water and water are mixed through the recesses 2a and 2b in the mixing chamber formed by the fixed disc 1, the movable disc 2, the cylindrical body 3 and the disc retainer 4, and are taken out to the hot water outlet pipe through the hot and cold water outlet 3b. .

Further, as the lever 7 is swung from the virtual line 7'in FIG. 9 to the virtual line 7 ", the opening areas of the hot water inflow hole 1a and the water inflow hole 1b gradually increase, and the flow rate increases.
When the lever 7 is tilted to the position of the imaginary line 7 ″ in FIG. 9 and the lever 7 is rotated about its axis in any direction, the movable disk is moved as shown in FIGS. Rotates in a predetermined direction, the opening area ratio of the hot water inflow hole 1a and the water inflow port 1b changes, and the desired mixing ratio (hot water temperature) can be adjusted.

When the lever 7 is rotated to the limit phase defined by an appropriate mechanical stopper (not shown), the hot water inflow hole 1a or the water inflow hole 1b as shown in FIGS. Only the water is blocked, and only water or hot water can be taken out.

[0014]

SUMMARY OF THE INVENTION In the above conventional technique,
When the lever is in the neutral position shown by reference numeral 7 in FIGS. 8 and 9, the axis XX of the lever 7 is located at the center 1c between the hot water inflow hole 1a and the water inflow hole 1b of the fixed disk 1 shown in FIG. Match. Therefore, in order to prevent the movable disc 2 from falling down and uneven wear, the movable disc 2 has a partition 2c and a pointed portion 2 forming recesses 2a and 2b, as shown in FIGS.
a ', 2b', etc. are formed.

Therefore, there is a problem that not only the shape of the movable disk 2 becomes complicated but also the hot water / water partition 2c deteriorates the mixing property of the hot water and water. Therefore, an object of the present invention is to provide a single lever type hot and cold water mixing tap capable of solving such a problem.

[0016]

In order to achieve the above-mentioned object, the invention according to claim 1 has a fixed disk (17) provided by vertically penetrating a hot water inlet (17a) and a water inlet (17b). ) The movable disc (1
Operate 6) with the lever (13) to move the movable disc (16).
The flow rate of the mixed water is increased / decreased by linearly moving the fixed disk (17) along the upper surface of the fixed disk (17), and the movable disk (16) is rotated along the upper surface of the fixed disk (17) to rotate hot water. In a single-lever type hot and cold water mixing tap having a different mixing ratio, a position apart from the center (17c) of the fixed disk (17) located on the extension line of the axis (XX) at the neutral position of the lever (13). Each of the outlets of the hot water inlet (17a) and the water inlet (17b) is provided on the bottom surface of the movable disc (16) away from the center (16d) of the movable disc (16). capable of communicating one notch to the outlet portion of 17a) and water inlet (17b) to form a (16c), further, the fixing di
Attach the fixed disk (17) to the bottom side of the disc (17).
Stopper (18) for storing and holding on day (11)
Place the stopper (18) and the fixed disk (1)
Install the packing (19) between the
Hot water inlet (17a) and water inlet formed in the sk (17)
Each outlet of (17b), that is, the movable disk (1
6) The outlet opening to the side is formed in a circular shape, and the hot water inlet (17
a) and the water inlet (17b), that is, the inlet
If both entrances that open to the Kin (19) side are formed into an elliptical shape
The stoppers (1
8) The hole (18a) that forms the hot water inlet and the inflow of water
A hole (18b) forming a mouth is formed, and the packing
The hole (19) for the hot water inflow of the stopper (18)
The hot water from (18a) is poured into the fixed disk (17).
The hole (19a) leading to the inlet (17a) and the stopper
The water from the water inflow hole (18b) of (18) is fixed as described above.
Hole (19) leading to the water inlet (17b) of the disc (17)
b) is formed and both holes (1) of the packing (19) are formed.
9a) and (19b) to the holes (1) of the stopper (18).
8a) (18b) to the elliptical hole with a long diameter larger than the diameter
It is a single lever type hot and cold water mixing tap that is formed.

The invention according to claim 2 provides the invention according to claim 1.
In the single lever type hot and cold water mixing tap, the planar shape of the movable disk (16) is substantially oval, and the one notch (16c) extends along the long side of the oval. It is characterized by that.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS.
It will be described with reference to FIG. In these figures, 11 is a body, 12 is an O-ring fitted in an annular groove formed on the outer periphery of the body 11, 13 is a spherical portion 13a, and the spherical portion 13a and the housing 14
And the lever supported by the spherical surface of the.

Reference numeral 15 denotes an X-shaped ring-shaped rubber packing (hereinafter abbreviated as X-ring) having a cross-sectional shape as shown in FIG. 4 (b). As shown in FIG.
And is elastically pressed against the outer periphery of the spherical portion 13a of the lever 13 to seal hot water.

On the lower portion of the spherical portion 13a of the lever 13, a joint portion 13b protruding downward is integrally formed. The housing 14 is rotatably fitted in the body 11. When the movable disk 16 is rotated by rotating the lever 13 about its axis as described later, the housing 14 is rotated.
Rotate at the same time. It should be noted that two engaging portions 14 a, 14 a are formed on the outer periphery of the housing 14, and a locking portion that engages with these engaging portions and limits the rotation amount (angle) of the housing 14 is the body 11. Although formed inside,
This locking part is not shown in the figure.

Reference numeral 16 denotes a movable disk, which has a substantially oval planar shape and has a quadrangular bulging portion 16a on its upper surface.
In addition, a square recess 16b formed from above is formed in the center, and in the assembled state, the lever 1 is inserted into the recess 16b.
The lower joint portion 13b of No. 3 is fitted.

The movable disk 16 is slidable in the left-right direction in FIG. 1 by fitting the rectangular bulging portion 16a into a guide groove 14b (see FIG. 1) formed inside the lower surface of the housing 14. Has become. Reference numeral 16c denotes a notch formed on the bottom surface of the movable disk 16 away from the center 16d (see FIG. 6) of the movable disk 16, and extends along the outer peripheral long side of the oval movable disk 7.

Reference numeral 17 denotes a fixed disk, the upper surface of which is watertightly in contact with the lower surface of the movable disk 16 and is formed of ceramic whose sliding contact surface is polished so as to be slidable smoothly with respect to each other. The fixed disk 16 is also made of ceramic.

The fixed disc 17 is formed with a hot water inlet 17a and a water inlet 17b that penetrate vertically, and the outlets of both inlets are open at positions apart from the center 17c of the fixed disc. In addition, the hot water inlet 17a and the water inlet 1
Each of the inlets 7b , that is, both inlets that open to the lower surface of the fixed disk 17 are formed in an elliptical shape surrounding the center 17c of the fixed disk, and the two elliptical shapes are arranged such that their major axes are parallel to each other.

In FIG. 5, φ is the circular diameter of both outlets,
Φ indicates the major axis of both inlets. In FIG. 4, 17d,
Numeral 17d is a notch for positioning formed at two locations of the outer diameter of the fixed disk 17.

Reference numeral 18 denotes a stopper for preventing the lever 13 to the fixed disk 17 and the like from coming off in a state of being housed in the body 11, and in such a manner that the bottom opening of the body 11 is covered with the stopper. The joint parts 18c, 18c are locked to the engaging notches 11a, 11a of the body 11 so that the body 1
Connect stopper 18 to 1.

Reference numerals 18a and 18b are holes symmetrically arranged at the same distance from the center of the stopper 18 and vertically extending through the stopper 18. 19 is an elliptical hole 19a, 19b
An elastic body (rubber) packing, which is opened, is attached in close contact between the stopper 18 and the fixed disk 17, and the hot water and the water flowing in through the holes 18a and 18b of the stopper 18 are elliptical holes 19a. And 19b into the hot water inlet 17a and the water inlet 17b of the fixed disk 17.

The elliptical holes 19a and 19b of the packing 19 have a small fluid resistance to the hot water and the water flowing from the holes 18a and 18b of the stopper 18, respectively, to the hot water inlet 17a and the water inlet 17b of the fixed disk 17. Since the holes 18a and 18b are circular holes, they are elliptical holes 19a, 19 having a major axis larger than the diameter.
b is opened in the packing 19, and the size and position thereof are aligned with the elliptical inlets which are the lower end openings of the hot water inlet 17a and the water inlet 17b.

Reference numerals 20 and 21 denote O-rings, which are mounted on the bottom surface of the stopper 18 so as to surround the openings of the holes 18a and 18b on the lower surface of the stopper 18, and show the hot and cold water mixing plug assembled as shown in FIGS. It is for performing a watertight function when it is installed in a device that has not been installed.

The stopper 18 has protrusions 18d and 18d protruding upward (see FIGS. 1 and 4), and the notches 17d and 17d are engaged with the protrusions to fix the fixed disk at the time of assembling the mixing stopper. Decide the direction of 17.

Reference numeral 11b is a hot and cold water outlet opening in the body 11. Next, the operation of the single-lever type hot and cold water mixing stopper having the above structure will be described. When the lever 13 is in the neutral (center) position shown in FIGS. 1 to 3, the component 16 is arranged so that the center 16d of the movable disk 16 and the center 17c of the fixed disk are located on the extension line of the axis XX of the lever 13. The relative position of is determined. Therefore, the holes 18a and 18b of the stopper 18 are distributed to both sides of the center 17c of the fixed disk 17 on the extension line of the axis XX and are arranged at equal distances.

The lever 13 is shown in FIG. 1 as a spherical portion 13a.
When it is tilted counterclockwise about the center, the movable disk 16 linearly moves to the right in FIG. 1 to close the hot water inlet 17a and the water inlet 17b of the fixed disk 17 (see FIG. 7 (a)). ).

The lever 13 is shown in FIG. 1 as a spherical portion 13a.
When tilted clockwise about the
6 moves linearly to the left in FIG. 1 and the notch 16c of the movable disk 16 faces the outlets (upper openings) of the hot water inlet 17a and the water inlet 17b of the fixed disk 17, so that both flow The inlets 17a and 17b are fully opened, the inflowing hot water and water are mixed, and the mixed warm water flows out from the warm water outlet 11b of the body 11 (see FIG. 7B).

From the state shown in FIG. 7 (a), the lever 13 is rotated rightward about its axis XX to move the movable disc 16
7 is rotated to the state of FIG. 7 (c), the cutout portion 16c at this time is moved to both inflow ports 17a and 17b of the fixed disk 17.
Since it is not facing any of the above, hot water does not come out.

From the state shown in FIG. 7 (c), the movable disk 16 is rotated by rotating the lever 13 rightward about its axis XX.
7D is rotated to the state shown in FIG. 7D, the notch 16c faces the hot water inlet 17a and is fully opened, and the water inlet 17b is opened.
Since it is fully closed, the mixing ratio of the mixed water changes and the hot water temperature rises.

Thus, the lever 13 is tilted to continuously change the amount of the mixed water, and the lever 13 is rotated to continuously change the mixing ratio (hot water temperature). In this case, unlike the prior art, the hot water inlet 17
a and each of the water inlets 17b are provided at positions apart from the center of the fixed disk 16 , and both the inlets 17a and 17b are provided.
Since the notch 16c that opens and closes the outlet of is made the only simple shape, the partition 2c as in the prior art and the pointed portion 2a ',
Since a complicated shape such as 2b 'is not required and the partition 2c is not provided, the hot water and the water can be mixed smoothly.

[0037]

Since the single lever type hot and cold water mixing valve of the present invention is constructed as described above, the mixing property of hot water and water is improved, and the shape of the movable disk is simplified.

Further, since the outlet of the hot water / water inflow hole of the fixed disk is provided eccentrically at a position away from the center of the fixed disk, that is, the center of the movable disk, the cutout portion of the movable disk is located at a position away from the center of the movable disk. Can be installed,
As a result, the projecting partition 2c for preventing the collapse can be eliminated, and the mixing property of the hot water and the water is improved.

Assuming that the amount of eccentricity of the outlet of the hot water / water inlet from the center of the movable disk is reduced as in the prior art, the notch 16c is formed at the center 16 as shown in FIG.
There is an inconvenience that the movable disk 16 is likely to fall down as shown by an arrow A in FIG.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of an embodiment of the present invention.

FIG. 2 is a partially longitudinal side view of the embodiment of FIG.

FIG. 3 is a front view of the embodiment of FIG.

4A is an exploded perspective view of the embodiment shown in FIG. 1, and FIG. 4B is a diagram showing a part of a cross section of the X ring in FIG.

5 is a side view of the fixed disc of the embodiment of FIG. 1. FIG.

6A and 6B are views of a movable disk of the embodiment of FIG. 1, in which FIG. 6A is a vertical side view and FIG. 6B is a bottom view.

FIG. 7 is an operation diagram of the embodiment of FIG. 1, in which (a) to (d) show different modes.

FIG. 8 is a vertical sectional front view of a conventional technique.

9 is a vertical side view of the prior art of FIG.

FIG. 10 is a plan view of a fixed disk used in the conventional technique of FIG.

11 is a side view of the fixed disk of FIG.

FIG. 12 is a bottom view of a movable disk used in the conventional technique of FIG.

13 is a side view of the movable disc shown in FIG. 12. FIG.

FIG. 14 is a plan view of a cylindrical body used in the conventional technique of FIG.

15 is a side view of the cylindrical body of FIG.

16 is a plan view of a disc retainer used in the conventional technique of FIG.

FIG. 17 is an operation diagram of a conventional technique, in which (a) to (f) are views showing different modes.

18A and 18B are views for explaining the tilt when the shape of the movable disk of FIG. 6 is changed, FIG. 18A is a vertical sectional side view, and FIG. 18B is a bottom view.

[Explanation of symbols]

13 lever 16 movable discs 16c Notch 16d center 17 Fixed disk 17a Hot water inlet 17b Water inlet 17c center XX axis center

Claims (2)

(57) [Claims] 1. A water inlet ( 17a) and a water inlet (17 )
The movable disc (16) slidably arranged on the upper surface of the fixed disc (17) penetrating up and down through b) is a lever.
The movable disc (16) is moved linearly along the upper surface of the fixed disc (17 ) by operating at (13) to increase or decrease the flow rate of the mixed water, and at the same time, to move the movable disc (16).
In a single-lever type hot and cold water mixing valve in which the mixing ratio of hot and cold water is changed by rotating the fixing disk (17) along the upper surface of the fixed disk (17) , the axis (XX ) of the lever (13) at the neutral position is extended. The center (17 ) of the fixed disc (17) located on the line
The hot water inlet ( 17a) and the water inlet (1
7b) is provided with outlets, and the movable disc (16) is further provided with a movable disc on the bottom surface.
Apart from the center (16d ) of (16), the hot water inlet
Notch one that communicable to the outlet portion of (17a) and water inlet (17b) to form a (16c), further, the bottom side of the fixed disk (17), the fixed de
For storing and holding the disc (17) in the body (11)
The stopper (18) is arranged, and the stopper (18) and the
Install packing (19) between fixed disk (17)
Then, the hot water inlet (17) formed in the fixed disk (17)
a) and each outlet of the water inlet (17b), that is, the movable
The outlet opening to the disc (16) side is formed into a circular shape,
Both inlet (17a) and water inlet (17b)
Both entrances that open to the packing (19) side are elliptical
And the holes (1) are formed in the stopper (18) to form a hot water inlet.
8a) and a hole (18b) forming a water inlet, and further, the packing (19) has the stopper (1).
The hot water from the hot water inflow hole (18a) in 8)
Hole (19a) leading to the hot water inlet (17a) of the disc (17)
And the hole (18b) for water inflow of the stopper (18)
These water is supplied to the water inlet (17) of the fixed disk (17).
forming a hole (19b) leading to b) and packing
Insert both holes (19a) and (19b) of (19) into the stopper
Larger than the diameter of each hole (18a) (18b) of (18)
A single-lever hot and cold water mixing tap characterized by being formed into an oval hole with a long diameter . 2. The movable disk is substantially oval in plan view, and the one notch extends along the outer peripheral long side of the oval. Single lever hot and cold water mixing tap.