JP4263979B2 - Bathroom chair - Google Patents

Description

  The present invention relates to a bathroom chair suitable for assisting elderly people, physically disabled people, sick people, and the like.

  It is convenient for elderly people, physically handicapped persons, sick people, etc. to sit on a chair and wash their body when taking a bath. Conventionally, various bathroom chairs have been proposed.

  For example, Patent Literature 1 describes a bathroom chair provided with an armrest formed by bending a metal pipe into a U shape. The armchair of this bathroom chair is configured so that it can be changed between the mounting position that stands up from both sides of the seat and the mounting position that extends forward from both sides of the backrest. The mounting position of the armrest is changed according to the body shape, the degree of obstacles, and the usage situation.

  Further, when assisting an elderly person or the like sitting on a chair, if the seat can rotate and the direction of the user can be changed, the burden on the assistant is reduced and the user himself is also comfortable. However, if there is no locking mechanism that properly locks the rotation of the seat, it may rotate against the will of the user, especially dangerous for the elderly who are physically disabled. The burden also increases for the caregiver. From such a viewpoint, various lock mechanisms for a swivel chair have been proposed.

For example, Patent Document 2 describes a rotating body fixing device that temporarily fixes a rotating body by tightening with a screw, and Patent Document 3 inserts a fixing pin into an insertion hole of a base. Thus, a rotary seat plate for a bathtub for fixing the pedestal is described.
JP 2002-325648 A Utility Model Registration No. 3063996 JP-A-8-294462

  However, in the bathroom chair described in Patent Document 1, since the armrests are fixed to the upper both sides of the seat portion with screws, the body can be moved only from the front of the bathroom chair. For this reason, when the user sits on a bathroom chair and washes his / her body, he / she needs to change the orientation of the chair in a narrow bathroom, which places a heavy burden on the user and the assistant.

  The fixing device for a rotary chair described in Patent Document 2 is complicated because it is necessary to tighten a screw every time it is fixed. Moreover, if the tightening is loose, it will rotate, which is dangerous.

  The fixing method described in Patent Document 3 is inconvenient because it is necessary to lift the seat and search for a hole formed in the leg with the fixing pin from below the seat. Further, if the user does not stand up, it cannot be rotated and cannot be fixed at a non-rotatable position.

  The present invention has been made in view of such problems, and normally locks a seat that can be rotated relative to a leg so as not to rotate unexpectedly, and even if an unbalanced load is applied, it is long-term. The present invention provides a bathroom chair that can be rotated stably over a wide range.

The present invention provides a seat that is rotatably supported with respect to a leg via a rotation mechanism, a backrest that is attached to the seat, a pair of armrests that are attached to the backrest, and the seat that is normally non-rotatably fixed. And a locking device, wherein the rotating mechanism is fixed to a leg, a lower mounting member formed with a plurality of fitting holes at a set interval in the circumferential direction, and a seat portion. The upper mounting member that is fixed and rotatably connected to the lower mounting member, and the lower mounting member or the peripheral edge portion of the upper mounting member directly or indirectly with a set interval in the circumferential direction. A lock lever that is pivotally supported on the upper mounting member so as to be rotatable about a horizontal axis, and a lower mounting member fitted to the locking lever. Lock pin that can be fitted into the hole A spring locking pin is disposed between the member and the lock lever is urged in the direction of mating with the fitting hole, it is composed of a feature of the drum-shaped der Rukoto that the support rollers are inflated with the central portion To do.

  According to the present invention, with respect to the lower mounting member fixed to the leg, the upper mounting member fixed to the seat portion and rotatably connected to the lower mounting member is placed via the support roller. Therefore, the seat portion is supported rotatably. However, normally, the lock pin provided on the upper mounting member is fitted in the fitting hole of the lower mounting member by the biasing force of the spring, and the upper mounting member, i.e., the seat portion, is the lower mounting member, i.e. Locked against rotation with respect to the leg. Therefore, the seat does not rotate against the user's will and the safety is high.

  On the other hand, if the lock pin is removed from the fitting hole of the lower mounting member via the lock lever, the upper mounting member can be unlocked with respect to the lower mounting member. For this reason, the user can change the direction of the body by rotating the seat while sitting on the bathroom chair, and the burden on the user and the assistant is reduced.

  At this time, even if an unbalanced load acts on the seat, for example, even if the seat is rotated against the backrest, the unbalanced load is distributed by the support rollers arranged at the peripheral edge of the lower mounting member and the upper mounting member. Can be supported. For this reason, it is possible to prevent the occurrence of rattling due to the force due to the eccentric load being concentrated on the rotation center portion, and to stably rotate over a long period of time, thereby improving the durability.

In addition, since the support roller has a drum-like shape in which the center portion swells , the upper mounting member is supported by line contact with the support roller even when an uneven load is applied to the seat portion. It is possible to prevent a decrease in part.

  In the present invention, the armrest is rotatable about a horizontal axis over a substantially horizontal use position where the armrest is pushed forward from both sides of the backrest and a substantially vertical flip-up position where the upper side of the seat is open. By rotating the armrest to the use position, the user's body can be stably supported. On the other hand, by turning the armrest to the flip-up position, the side of the bathroom chair is opened, and the user can transfer from the side of the bathroom chair. Therefore, the burden on the user and caregiver is reduced.

  In the present invention, if the distance between the pair of armrests can be adjusted, the bathroom chair can be used by adjusting the distance between the armrests according to the body shape of the user, which is convenient.

  According to the present invention, the seat portion that can rotate with respect to the leg is normally locked so as not to rotate unexpectedly, and can be stably rotated over a long period of time even if an uneven load is applied.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 3 show an embodiment of a bathroom chair 1 according to the present invention.

  The bathroom chair 1 includes a leg 2, a seat 3 that is rotatably supported by the leg 2, a backrest 4 attached to the seat 3, a pair of armrests 5 attached to the backrest 4, and a seat The rotation mechanism 6 supports the leg 3 so as to be rotatable with respect to the leg 2, and the lock mechanism 7 is provided on the rotation mechanism 6 and normally fixes the seat portion 3 so as not to rotate.

  The leg 2 is composed of a pair of leg main bodies 21 bent into a substantially U-shape, and four telescopic legs 22 slidably inserted into both end portions of each leg main body 21, respectively. It is formed of a pipe, for example, an aluminum pipe excellent in rust prevention and light weight. Although not shown in detail, the pair of leg main bodies 21 are substantially flattened at a substantially intermediate position, crossed in an X shape at the crushed substantially intermediate position, and the crossed portions are screwed. Are fixed together.

  Further, positioning pins 23 urged so as to protrude from the outer peripheral surface via springs (not shown) are provided in the vicinity of both end portions of the leg main body 21.

  On the other hand, each of the telescopic legs 22 is formed with a plurality of positioning holes 22a at set intervals corresponding to the positioning pins 23 provided on the leg body 21, and the positioning pins 23 are fitted into the positioning holes 22a. By combining, the amount of expansion / contraction of the expansion / contraction leg 22 with respect to the leg main body 21 can be adjusted. A cap 24 is screwed into the upper end of each telescopic leg 22. By tightening the cap 24, the gap between the outer peripheral surface of the leg main body 21 and the inner peripheral surface of the telescopic leg 22 is reduced. Can be prevented. Further, a leg rubber 25 is attached to the lower end portion of each telescopic leg 22 to prevent the washing scene from being damaged or slipping.

  The material of the leg 2 may be iron or stainless steel in addition to aluminum.

  As shown in FIG. 4, the seat portion 3 is made of a plastic hollow seat body 31 having a concave portion at the front end, and a foam plastic made to match the seat body 31 and covering the entire upper surface of the seat body 31. The seat body 31 is screwed to the leg body 21 of the leg 2. A plurality of fitting holes 31 a are formed in the seat body 31, while a protrusion 32 a that can be fitted into the fitting hole 31 a of the seat body 31 is formed downward on the back surface of the cushion portion 32. Has been. Therefore, by fitting the protruding portion 32a of the cushion portion 32 into the fitting hole 31a of the seat body 31, the seat body 31 and the cushion portion 32 can be integrated to form the seat portion 3, and the cushion portion The seat 32 can be easily removed from the seat body 31 for cleaning or replacement.

  As shown in FIG. 5, the backrest 4 is formed with a plastic hollow backrest body 41 in which a gripping hole 41 x into which a finger can be inserted is formed, and a gripping hole 42 x corresponding to the gripping hole 41 x of the backrest body 41. In addition, a foamed plastic cushion portion 42 that is formed in a shape that matches the backrest body 41 and covers the entire front surface of the backrest body 41, is bent into an approximately L shape, and one end is screwed to the back surface of the backrest body 41. The arm 43 includes a pair of arms 43 made of aluminum pipe, and the other end of each arm 43 is screwed to the leg body 21 of the leg 2. A plurality of fitting holes 41 a are formed in the backrest body 41, while a protrusion 42 a that can be fitted into the fitting holes 41 a of the backrest body 41 is formed on the back surface of the cushion portion 42. Has been. Therefore, the backrest 4 can be formed by integrating the backrest main body 41 and the cushion portion 42 by fitting the protruding portion 42a of the cushion portion 42 into the fitting hole 41a of the backrest main body 41, and the cushion portion 42. Can be easily removed from the backrest body 41 for cleaning or replacement.

Although not shown, the protruding portion 42a of the cushion portion 42 is shaped to have a frictional force so as not to easily fall off Mating holes 41a of the backrest body 41.

  The armrest 5 includes an armrest body 51 made of an aluminum pipe having a substantially parallel upper side portion 511 and a lower side portion 512 having a substantially middle portion bent in a U shape and a substantially rear half portion bent at a right angle when viewed from above. A pipe holder 52 fixed to the lower back of the backrest body 41 of the backrest 4 described above, a guide pipe 53 fixed to the pipe holder 52 so that both ends protrude beyond the side edges of the pipe holder 52, The pipe catch 54 is fixed to one end of each arm 43 of the backrest 4, and the tip of the lower side portion 512 of the armrest body 51 is slidably fitted into the guide pipe 53. And the substantially front half part of the upper side part 511 and the lower side part 512 including the U-shaped bending part of the armrest main body 51 is coat | covered with the cushion part 55 made from a plastic foam.

  On the other hand, as shown in FIG. 6, a disengagement prevention pin 561 that is biased so as to protrude from the outer peripheral surface via a spring (not shown) is provided in the vicinity of the tip of the upper side portion 511 of the armrest body 51. A plastic detachment prevention ring 562 is provided at the tip edge portion, and the detachment prevention pin 561 and the inner end face of the pipe catch 54 are usually in contact with each other as shown in FIG.

  Further, the distal end portion of the lower side portion 512 of the armrest main body 51 is biased so as to protrude from the outer peripheral surface via a spring (not shown) at the same interval as the interval between the detachment prevention pin 561 and the detachment prevention ring 562. Two stopper pins 571 and 572 are provided. And the elongated hole 53a which can selectively fit the stopper pins 571 and 572 is formed in the both ends of the guide pipe 53 along the circumferential direction, respectively (refer FIG. 3). The length of the long hole 53 a of the guide pipe 53 is set in the rotation range of the armrest 5. That is, when the armrest 5 is in a substantially horizontal use position (see FIG. 2), the stopper pins 571 and 572 abut against one inner end edge of the elongated hole 53a and prevent further downward rotation, Further, when the armrest 5 is rotated from the use position and is in a substantially vertical flip-up position (see FIG. 7), the stopper pins 571 and 572 are in contact with the other inner end edge of the elongated hole 53a and further upward. The rotation to is prevented.

  In addition, by pushing the stopper pins 571 and 572 and moving the armrests 5 in directions toward or away from each other, the distance between the armrests 5 can be easily adjusted according to the body shape of the user.

  Here, when the outer stopper pin 571 is fitted into the elongated hole 53a of the guide pipe 53, the detachment prevention pin 561 can contact the inner end edge of the pipe catch 54 (see FIG. 3). When the inner stopper pin 572 is fitted into the elongated hole 53a of the guide pipe 53 by pushing the outer stopper pin 571 and pulling the armrest 5 away from each other, the detachment preventing ring 562 is connected to the pipe catch 54. Can be brought into contact with the inner end edge (see FIG. 8).

As shown in FIGS. 9 and 10, the rotating mechanism 6 is a plastic lower mounting member 61 having a boss 611, and is screwed to the peripheral portion of the lower mounting member 61, and is set downward at a set interval in the circumferential direction. A ring-shaped roller receiving member 62 having a plurality of convex roller support portions 621 formed thereon, and screwed to the lower mounting member 61 located inside the roller receiving member 62, A hole 63a that can be fitted into the boss 611 is formed in the center portion, and an aluminum rotary division plate 63 in which a plurality of fitting holes 63b are formed in the peripheral portion at a set interval in the circumferential direction, and a roller A plastic upper attachment having a plurality of drum-like support rollers 64 rotatably supported on the roller support portions 621 of the receiving member 62 and a boss 651 that can be fitted to the boss 611 of the lower attachment member 61. Member 6 A ring-shaped roller contact plate 66 that is screwed to the peripheral edge of the upper mounting member 65 and has a guide groove 66a corresponding to the support roller 64 formed in the circumferential direction, and the lower mounting member 61 of the leg 2 The upper mounting member 65 is screwed to the seat main body 31 of the seat portion 3, and the boss 651 of the upper mounting member 65 is fitted to the boss 611 of the lower mounting member 61. The lower mounting member 61 and the upper mounting member 65 are configured to be rotatably fastened by a connecting bolt 67 and a nut 68 inserted through a boss 611 of the lower mounting member 61.

  A plurality of concave support portions 612 are formed on the peripheral edge portion of the lower mounting member 61 at a set interval in the circumferential direction corresponding to each roller support portion 621 of the roller receiving member 62. The roller receiving members 62 can be arranged on the lower mounting member 61 by fitting the roller supporting portions 621 of the roller receiving member 62 to the supporting portions 612 of the mounting member 61. The lower mounting member 61 is formed with a plurality of fitting holes 61 a at set intervals in the circumferential direction corresponding to the respective fitting holes 63 b of the rotary dividing plate 63. The rotation dividing plate 63 can be fixed to the lower mounting member 61 by inserting the hole 63a of the rotation dividing plate 63 into the boss 611 and aligning the fitting holes 61a and 63b.

  Further, a flange 652 projecting downward is formed at the peripheral edge of the upper mounting member 65, and the inner diameter of the flange 652 is set slightly larger than the outer diameter of the lower mounting member 61. When the upper mounting member 65 is overlapped and fastened, the inner peripheral surface of the flange 652 of the upper mounting member 65 is fitted to the outer peripheral surface of the lower mounting member 61.

  Here, the material of the support roller 64 is not limited to synthetic resin or metal, but since it rotates, a material excellent in slidability such as POM and nylon is preferable.

  The material of the roller abutting plate 66 is preferably metal because it requires strength, but a hard synthetic resin can also be used. When a metal is used, rust-proof steel can be used in addition to aluminum and stainless steel. Examples of the hard synthetic resin include ABS, polystyrene, polycarbonate, polyester, PBT, nylon, POM, and alloys thereof. Further, polypropylene may be reinforced with talc or the like.

  On the other hand, on the upper surface of the upper mounting member 65, as shown in FIG. 11, two first recesses 65a having a substantially semicircular cross section are formed orthogonal to the radial direction. A second recess 65b having a substantially square cross section is formed by connecting the outer peripheral edges. The first recess 65a is formed with a circular recess 65c on the outer peripheral edge thereof, and is the same as each fitting hole 63b of the rotary dividing plate 63 and each fitting hole 61a of the lower mounting member 61 described above. A through hole 65d is formed on the radius. Further, on the inner surface of each first recess 65a, a through hole (not shown) is formed in the horizontal direction, which is located approximately in the middle of the length direction and slightly smaller than the diameter of the lock lever 71 described later. The pair of holding portions 65e formed are opposed to each other.

  A lock lever 71 of a lock device 7 to be described later is disposed in a substantially right triangular recess formed by the first recess 65a and the second recess 65b. At this time, the lever 711 of the lock lever 71 is a pair of holding members. The lock lever 71 can be pivotally supported around a horizontal axis by being pinched by the portion 65e and inserting a pin 74 (see FIG. 10) through the through hole.

  On the other hand, as shown in FIG. 11, the lock device 7 includes a lock lever 71 having a substantially right triangle shape, a lock pin 72 pivotally supported around the horizontal axis at the tip of the lock lever 71, A spring 73 (see FIG. 10) that is disposed in the recess 65c of the mounting member 65 and biases the lock lever 71 upward, and the lock pin 72 is inserted into a through hole 65d formed in the upper mounting member 65. The leading end is set so that it can be fitted into the fitting hole 61 a of the lower mounting member 61 through the fitting hole 63 b of the rotary dividing plate 63.

  The lock lever 71 is formed by arranging the base end portions of a pair of levers 711 bent in a substantially rectangular shape orthogonal to each other, and connecting a connecting member 712 to a substantially middle portion of the levers 711, The base end portion of each lever 711 and the connecting member 712 are disposed in the pair of first recess 65a and second recess 65b of the upper mounting member 65, respectively. And the operation part 713 is provided in the front-end | tip of each lever 711 so as to oppose on the substantially 1 line, respectively. The lever 711 of the lock lever 71 is formed with a through hole (not shown) facing the through hole of the pair of holding portions 65e provided in the first recesses 65a of the upper mounting member 65, respectively. By inserting the pin 74 through the through hole of the holding portion 65e and the through hole of the lever 711, the lock lever 71 can be pivotally supported around the horizontal axis with respect to the upper mounting member 65.

  Therefore, after screwing the roller receiving member 62 and the rotary dividing plate 63 to the lower mounting portion member 61 in advance, and after supporting the shaft 64 by inserting the supporting rollers 64 into the roller supporting portions 621 of the roller receiving member 62, respectively, The lower mounting member 61 is screwed to the leg body 21 of the leg 2. On the other hand, after the roller contact plate 66 is screwed to the upper mounting member 65, the spring 73 is disposed in the recess 65c, and the lock pin 72 connected to the lock lever 71 is inserted into the through hole 65d of the upper mounting member 65. Further, the lock lever 71 is disposed over the first recess 65a and the second recess 65b of the upper mounting member 65, and the pin 74 is inserted into the through hole of the lever 711 and the through hole of the holding portion 65e. Next, after the bolt 67 is inserted into the boss 651 of the upper mounting member 65, the seat main body 31 of the seat portion 3 and the upper mounting member 65 are screwed, and the boss 651 of the upper mounting member 65 screwed to the seat main body 31 is fixed. The upper mounting member 65 and the lower mounting member 61 are coupled by fitting into the boss 611 of the lower mounting member 61 and screwing the nut 68 into the bolt 67 inserted through the boss 611 of the lower mounting member 61. At this time, as shown in FIG. 9, the operation portion 713 of the lever 711 in the lock lever 71 is located outside the seat portion 3.

  As a result, the upper mounting member 65 is placed on the support roller 64 disposed on the peripheral edge of the lower mounting member 61 via the roller abutting plate 66, so that the upper mounting member 65, that is, the seat portion 3 is The peripheral edge portion is supported by the support roller 64 and can rotate around the boss 611 of the lower mounting member 61. In this case, the upper mounting member 65 is supported by a plurality of support rollers 64 rotatably supported on the peripheral edge portion of the lower mounting member 61, so that an uneven load is applied to the seat portion 3. However, for example, even when the user rotates while leaning on the backrest 4, the uneven load can be distributed and supported. That is, the force due to the uneven load is concentrated on the roots of the bosses 611 and 651 to prevent the bosses 611 and 651 from rattling, and the durability can be improved.

  Further, the lock lever 71 has a lock pin 72 inserted through the through hole 65 d of the upper mounting member 65 by the biasing force of the spring 73, and the fitting hole of the lower mounting member 61 through the fitting hole 63 b of the rotary dividing plate 63. It is urged in the direction of fitting with 61a and is pivotally supported by the upper mounting member 65 so as to be rotatable about a horizontal axis. For this reason, the seat portion 3 is normally kept non-rotatable by fitting the lock pin 72 into the fitting hole 63b of the rotary dividing plate 63 and the fitting hole 61a of the lower mounting member 61. Rotation that is not intended by the operator is prevented.

  On the other hand, when it is necessary to rotate the seat portion 3, if the user depresses the operation portion 713 of the lock lever 71 against the biasing force of the spring 73, the lock lever 71 rotates around the pin 74. Thus, the lock pin 72 connected to the lock lever 71 rises along the through hole 65d of the upper mounting member 65, and disengages from the fitting hole 63d of the rotary dividing plate 63 and the fitting hole 61a of the lower mounting member 61 ( (See FIG. 12). In this state, the seat portion 3 can be easily rotated via the support roller 64.

If the push-down operation of the operation unit 713 is interrupted while rotating to an arbitrary angle, the lock lever 71 is rotated around the pin 74 by the urging force of the spring 73, and the lock pin 72 is fitted to the rotary dividing plate 63. The mating hole 63b and the fitting hole 61a of the lower mounting member 61 are fitted, and thereafter the rotation of the seat portion 3 is prevented.

  Next, a method of using the bathroom chair 1 having the above configuration will be described.

  2 and 3, at the time of shipment, the armrest 5 has an outer stopper pin 571 fitted into the elongated hole 53a of the guide pipe 53 so that the interval is reduced and the armrest 5 is used substantially horizontally. In position.

  In this state, the user can sit on the seat 3 and wash his body. At this time, the user can put the elbow on the armrest 5 or grasp the upper side 511 or the lower side 512 of the armrest main body 51 as appropriate, so that the body can be supported stably. Moreover, since the cushion part 55 of the armrest 5 contacts a user, a usability | use_condition is good. Furthermore, since the user's buttocks and back contact only the cushion portions 32 and 42 provided so as to cover the entire surface of the seat body 31 and the backrest body 41, it is possible to alleviate the coldness in winter and to improve the comfort of the user. Is good.

  Here, when the weight of the user acts on the armrest 5, the detachment prevention pin 561 is in contact with the inner end edge of the pipe catch 54, so that the upper side portion 511 of the armrest body 51 is not dropped from the pipe catch 54. It is held securely.

  When the body washing is completed, the armrest 5 is rotated to a substantially vertical flip-up position (see FIG. 7). That is, when the armrest body 51 is grasped and lifted upward, the outer stopper pin 571 moves along the elongated hole 53 a of the guide pipe 53 and the lower side portion 512 of the armrest body 51 rotates around the guide pipe 53. As a result, the upper side 511 of the armrest main body 51 is detached from the pipe catch 54. For this reason, it can be easily rotated to the flip-up position. In the flip-up position, the upper side of the seat portion 3 is opened, so that the user can transfer from the side of the bathroom chair 1, and the burden on both the user and the caregiver can be reduced.

  On the other hand, when the armrest 5 of the bathroom chair 1 is expanded in accordance with the user's body shape, the armrest body 51 is grasped and lifted upward, and the lower side portion 512 of the armrest body 51 is rotated around the guide pipe 53. Then, the upper side portion 511 is detached from the pipe catch 54. Next, when the outer stopper pin 571 is pushed in and the armrest main body 51 is pulled away from each other, the inner stopper pin 572 is fitted into the elongated hole 53a of the guide pipe 53, so that the stopper pins 571, 572 are fitted. The width of the armrest 5 can be expanded by a distance corresponding to the interval (see FIG. 8). Thereafter, the armrest 5 may be pushed down and the upper side 511 of the armrest body 51 may be attached to the pipe catch 54.

  In this state, the disengagement prevention ring 562 contacts the inner edge of the pipe catch 54, so that even if the weight of the user acts on the armrest 5, the upper side portion 511 of the armrest main body 51 will not fall off from the pipe catch 54. It is held securely.

  By the way, when the seat portion 3 is rotated at the position where the width of the armrest 5 is expanded or at the contracted position, the user can push down the operation portion 713 of the lock lever 71 against the urging force of the spring 73. For example, the lock pin 72 connected to the lock lever 71 rises along the through hole 65d of the upper mounting member 65, and disengages from the fitting hole 63d of the rotary dividing plate 63 and the fitting hole 61a of the lower mounting member 61 ( Therefore, the seat 3 can be easily rotated via the support roller 64.

At this time, by rotating the seat portion 3 in a state of leaning against the backrest 4, even unbalanced load is applied, to distribute the unbalanced load by the support rollers 64 disposed on the periphery of the lower mounting member 61 It can be supported and does not act on the center of rotation.

  If the seat portion 3 is rotated to the required position, if the push-down operation of the operation portion 713 is interrupted, the lock pin 72 connected to the lock lever 71 is engaged with the fitting hole 63b of the rotary dividing plate 63 and the urging force of the spring 73. It fits into the fitting hole 61a of the lower mounting member 61, and thereafter the rotation of the seat portion 3 is prevented.

  Therefore, since the rotation of the seat portion 3 is normally locked, the seat portion 3 does not rotate against the user's will and is safe. Further, the lock is released simply by depressing the lock lever 71, and even an elderly person or the like can easily operate and is easy to use. Furthermore, if it is a position where the fitting hole 61a of the lower mounting member 61 is formed, it can be locked at a desired position, so that the positional relationship between the bathtub and the user, the positional relationship between the user and the caregiver, etc. Can be rotated and locked at an optimal position, and the burden on the user and the assistant is reduced.

  In the above-described embodiment, the roller receiving member 62 is fixed to the lower mounting member 61, and the support roller 64 is rotatably supported on each roller support portion 621 of the roller receiving member 62. A roller support portion may be formed on the lower mounting member 61 and the support roller 64 may be provided directly on the lower mounting member 61.

  Further, the case where the roller abutting plate 66 is fixed to the upper mounting member 65 and placed on the support roller 64 is illustrated. However, a guide groove corresponding to the support roller 64 is formed on the upper mounting member 65 to form the upper mounting member 65. May be placed directly on the support roller 64.

  Furthermore, although the case where the support roller 64 is provided on the lower attachment member 61 side is illustrated, it can also be provided on the upper attachment member 65 side. In this case, the roller receiving member 62 may be provided on the upper mounting member 65, while the roller contact plate 66 may be provided on the lower mounting member 61.

  Furthermore, in the above-described embodiment, the case where each armrest 5 is adjusted to two wide and narrow stages has been described. However, it can be adjusted to three or more stages, and the width of the armrest may be fixed.

  As described above, according to the present invention, the seat portion that is rotatably supported by the rotation mechanism with respect to the leg can be normally locked without being rotated by the lock device. A safe bathroom chair that does not rotate can be provided.

It is a perspective view which shows one Embodiment of the chair for bathrooms of this invention. It is a side view of the bathroom chair of FIG. It is a rear view of the bathroom chair of FIG. It is a disassembled perspective view of the seat part of the bathroom chair of FIG. It is a disassembled perspective view of the backrest of the bathroom chair of FIG. It is a rear view which shows the armrest of the bathroom chair of FIG. It is a side view which shows the state which turned the armrest of the bathroom chair of FIG. 1 to the flip-up position. It is a rear view of the chair for bathrooms in the state where the width of the armrest was expanded. It is a fragmentary sectional view which shows the rotation mechanism of the bathroom chair of FIG. FIG. 10 is an enlarged view showing a part of the rotation mechanism of FIG. It is a top view which shows an upper attachment member and a locking device. It is an enlarged view which abbreviate | omits and shows a part of rotation mechanism of the state which released the locking device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bathroom chair 2 Leg 3 Seat 4 Backrest 5 Armrest 6 Rotating mechanism 61 Lower mounting member 62 Roller receiving member 63 Rotation dividing plate 64 Support roller 65 Upper mounting member 66 Roller pad 7 Locking device 71 Lock lever 72 Lock pin
73 Spring

Claims (3)

A seat part rotatably supported by a rotation mechanism with respect to the leg, a backrest attached to the seat part, a pair of armrests attached to the backrest, and a lock device for fixing the seat part normally non-rotatably; The rotating mechanism is fixed to a leg, and is fixed to a seat with a lower mounting member formed with a plurality of fitting holes at a set interval in the circumferential direction. A plurality of upper mounting members rotatably connected to the lower mounting member, and a plurality of shafts rotatably supported at a set interval in the circumferential direction directly or indirectly on a peripheral portion of the lower mounting member or the upper mounting member And a locking device that is pivotally supported by the upper mounting member so as to be rotatable about a horizontal axis, and is fitted in the fitting hole of the lower mounting member. Lock pin, upper mounting member and A spring disposed and locked pin between Clever is urged in the direction of mating with the fitting hole, is composed of, bathroom with the support roller and said drum-shaped der Rukoto bulged with a central portion Chair. The armrest is rotatable about a horizontal axis over a substantially horizontal use position where the armrest is pushed forward from both sides of the backrest and a substantially vertical flip-up position where the upper side of the seat is open. The bathroom chair according to claim 1. The bathroom chair according to claim 1 or 2, wherein a distance between the pair of armrests is adjustable.

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