JP3024759U - Bathroom chair - Google Patents

Abstract

(57) [Abstract] (Correction) [PROBLEMS] To make it possible to perform stable, smooth, and easy operations of ascending, descending, and turning while sitting on a chair by an elderly person who takes a bath. SOLUTION: A pedestal member 11, a support hollow shaft portion 21a having an external peripheral surface formed with a male screw 22 to be screwed with a female screw, a reinforcing rib 21c having an inner diameter and an outer diameter expanded from the support hollow shaft portion,
21d is provided, and an intermediate portion 21b in which an engaging edge 25 is formed between engaging projections 24 projecting at a predetermined angular interval on the lower surface of the inner peripheral flange portion 21f on the lower side, and the lower bearing circumferential groove 2 on the upper surface of the intermediate portion 21b.
3, a support member 21 formed of a support portion 21e, a seat member 31, and an end plate piece 42b that is individually divided and is interposed between the lower bearing circumferential groove and the upper bearing concave groove and protrudes from the lower surfaces of both ends. Retainer 42 having retaining holes 42a formed therein, and retaining pieces 42c projectingly provided on the lower surfaces of both sides of each retaining hole, and a bearing 41 comprising balls 43 retained in each retaining hole.
With.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 INDUSTRIAL APPLICABILITY The present invention relates to a chair for a bathroom, and more particularly, it is placed in a bathroom washroom so that an elderly person or a physically handicapped person with a lower half of the body can easily and easily take care of himself or herself. The present invention relates to the improvement of a bathroom chair that is suitable for use in washing the body, as well as being able to enter and rise in a bathtub.

[0002]

[Prior art]

 As the aging of the inhabitants is progressing socially and the nuclear family is advancing, as in the present day, there are an increasing number of cases in which the elderly couple or the elderly alone live their lives. Thus, living a life alone with an elderly couple or alone is prone to various problems in various ways.For example, especially when taking a bath, an elderly person goes into and out of a bathtub by himself. Is extremely difficult. Such bathing by the elderly alone is usually done with the help of a nurse dispatched from a volunteer organization or the like for nursing the elderly, even for a strong male nurse. Taking care of an elderly person alone and putting them up and down in the bathtub requires a considerable amount of hard work, and such a phenomenon was exactly the same even in physically disabled persons such as the lower half of the body.

Therefore, conventionally, for example, as disclosed in Japanese Utility Model Publication No. 2-7557, the chair itself on which an elderly person or the like who takes a bath sits can be mechanically hung and hung, and the chair is still hung. In this state, a mechanical lifter device that uses a power source that can be swung freely is used, and a bathing means that allows the elderly person to enter or leave the bathtub by electrical operation by himself or an attendant is provided.

As another similar means, for example, in a state where an elderly person or the like who takes a bath is sitting on a chair, he / she can perform a lift-like operation of up / down and turning by screwing / retracting by turning operation of himself / herself. Chair-style bathing appliances that allow entry and exit from a bath have also been proposed and already implemented.

[0005]

[Problems to be solved by the device]

 However, in the above-mentioned conventional bathing means using a mechanical lifter device using a power source in the former, since the equipment itself is relatively large and expensive, a relatively small bathroom which is often found in private residences. There are various problems in installing the device in a room with a lot of cost, and in the latter case, a bathing means using a chair-like bathing equipment that can be operated like a lift, the elderly person to be bathed, etc. It is not always easy for the person himself to perform each operation while sitting on the chair, in other words, the operation of raising, lowering, and turning by himself while supporting his own total weight. It needs to be strong enough to withstand the load, becomes heavy, lacks stability, and cannot perform each operation smoothly, or in some cases is dangerous. Cormorants had an improvement to be solved.

The present invention has been made in order to solve such a conventional problem, and its purpose is to provide a bathing operation while sitting on a chair by an elderly person or the like to be bathed. It is an object of the present invention to provide a chair for a bathroom in which each operation of raising, lowering and turning can be stably, smoothly and easily performed.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the bathroom chair according to the present invention is configured as follows.

That is, the bathroom chair of the present invention is provided with a lower side annular hem portion having a stationary surface anti-slip ring on the lower end surface and an annular shell portion upwardly curved from the hem portion. An annular support portion provided on the upper side, and an inner cylinder which is integrally connected to the inside of the annular support portion by internal reinforcing ribs to form a hollow upper and lower shape, and a female screw is formed on the inner peripheral surface of the hollow shape. And a supporting hollow shaft portion having a hollow cylindrical shape and having an external angle screw formed on the outer peripheral surface to be screwed into the female angle screw of the annular support portion so as to be vertically reciprocable. A plurality of engaging protrusions are provided at a predetermined angular interval on the lower surface of the inner peripheral flange portion formed on the lower side of the supporting hollow shaft portion, the reinforcing ribs being provided on the inner surface and the outer surface of the supporting hollow shaft portion. And a peripheral portion of the intermediate portion in which the engaging edges are formed between the respective engaging protrusions and the peripheral edge portion of the intermediate portion are expanded in a saucer shape. The support member is composed of a support portion formed with an upper lower bearing circumferential groove formed on the upper surface of the saucer-shaped portion, and a lumbar support portion is erected on one side of the upper surface. A stool surface part that is flattened leaving a through hole and has a recessed portion formed on the upper surface of the flattened part on the waist rest part, and a stool surface anti-slip ring is fitted around the stool surface part. An annular groove having an upper bearing concave groove facing the lower bearing circumferential groove on the lower surface, and an annular groove formed in the inner peripheral portion of the through hole so as to be insertable inside the inner peripheral flange portion. In addition, a plurality of independently bendable engaging tongues are formed on the lower side at predetermined angular intervals, and the engaging edges are engaged with the engaging edges on the outside of the lower end surface of each engaging tongue. An inner cylinder with claws arranged so that the engagement of the engaging claws can be released by the weight of the burden applied to the seating surface. And a plurality of holding holes are formed by having an end plate piece that is divided into a plurality of parts and that is interposed between the lower bearing circumferential groove and the upper bearing concave groove and that projects on the lower surfaces of both ends. Each of the holding holes is provided with a retainer in which a holding piece is provided on the lower surface of both sides of the holding hole, and a bearing for supporting the bearing held in each of the holding holes.

In the bathroom chair of the present invention having the above-mentioned configuration, the user lightly sits on the stool surface of the stool while supporting both feet on the floor of the washing room, thereby reducing the weight load on the stool. The engagement state of the engagement claw of the stool member with respect to the engagement edge of the receiving and supporting member is maintained by this, and as a result, the space between these two members is restrained so that they cannot rotate and the pedestal member Since the screwing operation of the receiving and supporting member including the seating member can be performed, the vertical height of the receiving and supporting member including the seating member can be adjusted. Further, in a mode in which the weight of the stool is sufficiently loaded by extending both feet to the floor of the washing area, the engagement of the engaging claw with the engaging edge is released, and the bearing for the bearing is supported. The turning operation of the stool is given priority to prevent the support member from screwing forward and backward with respect to the pedestal member.

[0010]

[Embodiment of device]

 Hereinafter, an embodiment of an example of a bathroom chair according to the present invention will be described in detail with reference to FIGS. 1 to 6.

FIG. 1 is an overall perspective view showing an appearance of a bathroom chair including a pedestal portion and a stool portion to which an embodiment of the present invention is applied, and FIG. 2 is an AA of FIG. Sectional drawing which shows the whole structure corresponding to a line part, FIG.3 (a) is sectional drawing which expands and shows the detail of the rotation stop engaging part of FIG. 1 same as the above, FIG.3 (b) is a stool of FIG. It is sectional drawing which expands and shows the detail of a surface antiskid part. FIG. 4 is a top view (upper half part) and lower surface (lower half part) of the support member forming the stool, and FIG. 5 is an upper surface of the seat member forming the stool. FIG. 6 is an exploded cross-sectional view showing a retainer for a bearing, which is interposed between the bearing member and the stool member, taken out (upper half portion) and lower surface (lower half portion).

In the apparatus configuration shown in each of these drawings, the bathroom chair according to the present embodiment example, as shown in FIGS. 1 and 2, has a pedestal portion 10 that is movably installed on the floor surface of the bathroom in the bathroom, The pedestal portion 10 includes a stool portion 20 whose upper and lower heights are adjustable by screwing the pedestal portion 10 from above so that the stool portion 20 can be advanced and retracted. The support member 21 and the receiving / supporting member 21 are thrust-supported via a receiving / supporting bearing 41 to be rotatably combined, and also have engaging means capable of selectively restraining the rotation. It has a seat member 31. The pedestal 10 and the stool 20 and the respective support members 21 and the stools 31 constituting the stool 20 are made of, for example, synthetic resin (plastics) material having required strength. It is integrally resin molded.

As shown in FIG. 2, the pedestal portion 10 has a planar hollow circular shape and a lower annular hem portion 11a that is set on the floor of the bathroom in the bathroom, and the diameter gradually decreases upward from the hem portion 11a. The pedestal member 11 is provided with an annular shell portion 11b that is curved and formed in an arcuate shape, and an upper annular support portion 11c that is raised up across the annular shell portion 11b. A female screw 12 is formed on the inner peripheral surface of an inner cylindrical portion 11d that is integrally connected to the inside of the portion 11c and is vertically hollow.

Further, by inserting the stationary surface anti-slip ring 13 into the annular groove 11e provided around the lower end surface of the annular skirt 11a, it is possible to sufficiently secure the stability in the stationary state. I am doing it. In the figure, reference numeral 14 is an internal reinforcing rib provided between the annular support portion 11c and the inner cylindrical portion 11d.

As shown in FIGS. 2, 3 (a) and 4, the support member 21 of the stool 20 has a hollow cylindrical shape and is screwed onto the female screw 12 of the annular support 11c on the outer peripheral surface. A supporting hollow shaft portion 21a formed with a male screw 22 for fitting and fitting, and a reinforcing rib 21c and 21d provided on the inner surface and the outer surface of the supporting hollow shaft portion 21a. It comprises an intermediate portion 21b and a receiving and supporting portion 21e in which a peripheral end portion of the intermediate portion 21b is expanded to a required outer diameter to form a saucer shape.

Further, on the inner peripheral side of the upper surface of the receiving and supporting portion 21e, an upward lower bearing circumferential groove 23 having water drainage holes 21g is formed at a plurality of points, and the inner surface reinforcing ribs are further formed. An inner peripheral flange 21f is formed on the lower side of the inner peripheral flange 21c so as to project in a required width in the axial direction, and a plurality of engaging projections 24 are formed on the lower surface of the inner peripheral flange 21f at predetermined angular intervals. After projecting, an engaging edge 25 is formed on the inner peripheral edge between the respective engaging projections 24. In this case, in the portion where the male screw 22 is formed, a thread portion is formed at every required angular interval in order to facilitate the die cutting at the time of resin molding.

On the other hand, the stool member 31 that constitutes the stool portion 20 by being combined with the receiving and supporting member 21 has a top surface one side portion as shown in FIGS. 2, 3 (a), 3 (b), and 5. The waist rest portion 31b is raised to a required height, and the seating surface portion 31a on which the user sits is formed by flattening as much as possible while leaving the through hole 31c in the vertical direction in the center. A plurality of locking holes 31e are formed on the upper surface of the seating surface portion 31a at appropriate angular intervals around the inside and outside of the waist rest portion 31b, and water is drained to a plurality of points. An annular groove 31d having an opening in the hole 31f is circumferentially provided, and a recessed portion 31g is formed inside the annular groove 31d, which is located at an intermediate corresponding portion of the lumbar support portion 31b and receives the coccyx portion of the user.

In addition, an inner cylindrical portion 32 fitted inside the inner peripheral flange portion 21f is vertically installed at a portion corresponding to the inner peripheral portion of the through hole 31c, and then the predetermined predetermined inner cylindrical portion 32 is formed. Engaging tongues 33 that can be independently bent are formed by a plurality of notch slits 32a at a plurality of angular intervals, and the engaging edges 25 are engaged with the lower outer surface of each engaging tongue 33. Engaging claws 34 are provided so as to project.

Further, in a portion corresponding to the lower surface of the annular groove 31d, a downward upper bearing concave groove 35 having a semicircular cross section and facing the upward lower bearing circumferential groove 23 is circumferentially provided. .

Here, a stool surface anti-slip ring 36 formed by protruding a wedge piece portion 36a is separately provided at each of the corresponding portions on the inner and outer circumferences, and as is apparent from FIG. By inserting the stool surface anti-slip ring 36 and engaging the wedge piece portions 36a in the locking holes 31e, sufficient stability is ensured when the user sits on the stool surface portion 31a. It can be so.

As shown in FIG. 2, FIG. 3 (b), FIG. 5, and FIG. 6, the receiving / supporting bearing 41 includes the lower bearing circumferential groove 23 of the receiving / supporting member 21 and the seating member 31 opposed thereto. It is interposed between the upper bearing concave groove 35 and allows the stool member 31 to smoothly rotate with respect to the bearing member 21, and is divided into four divided individual parts which are intervened in the lower bearing circumferential groove 23. For each bearing, which is retained in each retainer 42 and each retaining hole 42a formed in the surface of the retainer 42, and receives rolling motion between the lower bearing circumferential groove 23 and the upper bearing concave groove 35. Each of the balls 43 of the retainer 42, each end plate piece 42b for preventing the interpenetration of the retainer 42 from projecting on the lower surface of both ends of the retainer 42, and the lower surface of both sides of the holding hole 42a. Each holding piece to prevent the ball 43 from slipping out 4 2c are projected on each.

Subsequently, a procedure for assembling the respective constituent members of the bathroom chair in the above embodiment will be described.

In the present embodiment example, first, the stool section 20 is configured by combining the stool member 31 with the support member 21. That is, in this case, with the support member 21 held horizontally, the retainers 42 of the support bearing 41 are adjacent to each other in the upper bearing peripheral groove 23 of the support member 21 which is directed upward. The bearing balls 43 are held in the respective holding holes 43 of the respective retainers 42. After that, by fitting the stool member 31 to the support member 21, the engaging claws 34 projecting from the lower outer surface of the engaging tongues 33 of the seat member 31 are inserted into the support member 21. The upper bearing recessed groove 35, which is engaged (engaged with the engaging edge 25) between the engaging protrusions 24 beyond the peripheral flange portion 21f and is turned downward at the same time, abuts on each ball 43 and rotates. It becomes a dynamic bearing.

Next, in the stool section 20 configured as described above, the combination of the stool member 31 and the support member 21 is combined and coupled to the pedestal member 11 as the pedestal section 10. That is, in this case, the stool member 31 is engaged and restrained with respect to the support member 21, and in this state, the male member formed on the supporting hollow shaft portion 21a of the support member 21 including the seat member 31. Since the square screw 22 is screwed into the female corner screw 12 formed on the annular support portion 11c of the pedestal member 11 so that the height can be adjusted by turning the screw forward and backward, the desired bathroom chair is completed. is there.

Next, the operation and effect of the bathroom chair formed by assembling the constituent members in the above embodiment will be described.

In the bathroom chair according to the present embodiment example, the following actions are conceptually achieved by the above configurations. That is, the user lightly sits on the seating surface portion 31a of the seating member 31 while supporting both feet on the floor surface of the washing room, and the weight load on the seating member 31 is reduced, so that the support member 21 is engaged. Engagement of the stool member 31 with the edge 25 The engagement of the tongue piece 33, and by extension, the engagement claw 34, is held, and the rotation between the members 21, 31 is restrained. As a result, the stool member 31 is seated. The user himself / herself operates the receiving / supporting member 21 including the member 31 to move forward / backward, that is, adjust the vertical position of the stool member 31 (up and down) and adjust the angle of seating direction at the height position (turn). Each operation of and becomes possible. In addition, by sufficiently applying a weight load to the stool member 31 by extending both feet to the floor surface of the washing room, the flattened stool surface portion 31a is elastically bent downward, and with this bending. The engagement of the engagement claw 34 with the engagement edge 25 is automatically released, and as a result, the rotation operation of the stool member 31 via the support bearing 41 with respect to the support member 21 is prioritized. The screwing operation of the support member 21 with respect to the base member 11 is disabled.

More specifically and specifically, when a user who sits down on the seating surface portion 31a of the seating member 31 enters a bathtub which is generally higher than the floor surface of the washing room, both feet are put on the floor. As described above, the weight of the stool 31 is reduced by supporting the surface of the pedestal 31 by restraining the weight of the stool 31, and the pedestal 31 is restrained from rotating with respect to the support 21. In order to allow the receiving and supporting member 21 to be screwed forward and backward with respect to the member 11, for example, a chair for the bathroom, in which the seating surface portion 31a is set in a low height position in advance so that it can be easily seated, is placed beside the bathtub. While sitting on the seating member 31 in this state, alternately grasp the edge of the bathtub with both hands and feed it forward, or feed both legs supported on the floor one by one. It suffices that the stool 31 is rotated in the screw-retracting direction to raise the stool member 31 to the vicinity of the edge of the bathtub. When operating in this manner, the user himself / herself from the seated state. You can easily enter the bathtub with. Also, when going up from the bathtub, the same operation (action) as the reverse, that is, by turning the stool member 31 in the screwing direction and lowering it, it is also easy for the user to do so. In such a lowered state, the seating surface portion 31a is returned to the low height position again, and it becomes easy to sit down.

On the other hand, when the user is washing his / her body in the washing room, for example, with both legs extended to the floor while the stool 31 is set on the stool member 31 set at a low height position, Alternatively, by performing an operation to release the tension of both feet, such as by gently touching the floor with the both feet, and by sufficiently applying the weight load to the stool member 31, as described above, the receiving portion is also supported. The restraint of the stool member 31 to the member 21 is released, and the screwing operation of the support member 21 with respect to the pedestal member 11 is disabled, and instead, the stool member 31 can be rotated with respect to the support member 21. Therefore, it is possible to freely and freely swivel the stool member 31 at its height position to draw out the bath water, take out the washing agent, etc. arbitrarily and easily, and wash the body. But Totally convenient.

Here, the inner cylindrical portion 11 d provided inside the annular support portion 11 c of the pedestal member 11 and having the female angle screw 12 formed on the inner peripheral surface thereof, and the outer peripheral surface of the receiving and supporting member 21 having a male corner. The total weight of the user is concentrated and loaded on each of the supporting hollow shaft portion 21a on which the screw 22 is formed, but on the pedestal member 11 side of the former, the annular supporting portion 11c and the inner cylinder are connected. The portion 11d is integrally connected with the internal reinforcing ribs 14, and on the side of the latter supporting member 21, the intermediate portion 21b connected with the supporting hollow shaft portion 21a is the intermediate portion 21b, and the reinforcing ribs 21c, 21d on the inner surface and the outer surface, respectively. Since it is provided, it is possible to give sufficient strength to each corresponding part, and in the latter case, it is sufficient for the weight to be distributed and loaded from the intermediate part 21b to the receiving part 21e. It can withstand, and the stand The stationary surface anti-slip ring 13 inserted into the lower end surface of the annular hem 11a of the seat member 11 can more effectively prevent the stationary state of the pedestal member 11 from slipping.

Further, the waist rest portion 31b and the recessed portion 31g provided on the seating surface portion 31a of the seat rest member 31 are suitable so that the waist rest portion 31b side abuts the user's waist back side. Moreover, the concave portion 31g side is suitable for receiving the corresponding part of the tailbone in the hip portion on which the user sits, and can secure a comfortable sitting state for each, and at the same time, is attached to the annular groove 31d of the sitting surface portion 31a. The sitting surface anti-slip ring 36 can stably maintain the sitting state. In the flattened seating surface portion 31a, the engaging tongue piece 33 from the engaging edge 25 and the engaging claw 34 are automatically and reliably secured by the downward elastic flexibility associated with the weight load. The separation operation can be promoted, and the restraint of the stool member 31 with respect to the support member 21 can be released.

Further, the bearing 41, which is interposed between the lower bearing circumferential groove 23 of the bearing member 21 and the upper bearing groove 35 of the seat member 31, faces the bearing member 21. In addition to enabling the stable and smooth rotation of the stool member 31, the retainers 42 of the bearings 41 are adjacent to each other due to the presence of the end plate pieces 42b projecting from the lower surfaces of both ends. One end of the retaining hole 42a formed in the retainer 42 eliminates the fear that one end may dig into the lower surface of the other end and impair smooth rotation. The rolling action of the ball 43 for bearing, which is intervened together with 42c, can be favorably promoted.

[0032]

[Effect of device]

 As described above in detail in the embodiment, according to the configuration of the bathroom chair of the present invention, the user sits lightly on the seating surface of the seating member while supporting both feet on the floor of the washing room. By reducing the weight load on the seating member, the engagement of the engaging claw of the seating member with the engaging edge of the support member is retained, and the rotation between these members is restrained to allow the seating member to sit on the seating member. It is possible to move the receiving and supporting member including the member forward and backward, and by extending both feet to the floor surface of the washroom, etc. Is disengaged, and the rotation operation of the stool member via the bearing shaft for the bearing member is prioritized to disable the screwing of the bearing member with respect to the pedestal member. Various practically beneficial effects are achieved.

(A) When a user who sits on the seating surface of the seating member enters a bathtub located at a position higher than the floor surface of the washing room, he / she must support his / her feet on the floor surface and step on them. By reducing the weight load on the stool member, the rotation of the stool member is automatically restrained, and the supporting member can be screwed back and forth. The stool may be raised or lowered by selectively rotating the stool in the retracted or screwed direction. When operating in this way, the user himself or herself while sitting down. From this state, it can easily enter or rise into the bathtub, and in the lowered state, the seating surface part is returned to the low height position again, and it becomes easier to sit down. (B) When users wash their bodies in the washroom, for example, while sitting on a stool where the seating surface is set at a low height, for example, extend both feet to the floor, or place both feet on the floor. By applying a sufficient weight load to the stool by applying a light weight or the like, the restraint of the stool to the pedestal member is released, and the screwing operation of the pedestal member to the pedestal member is disabled. Instead, the stool member can be rotated with respect to the support member, so that it is easy to pump out the bath water, take out the detergent, and the like, which makes the body washing operation convenient. (C) When the user is seated on the seating member, the entire weight is concentrated and loaded on the inner tubular portion of the pedestal member and the supporting hollow shaft portion of the receiving and supporting member, but on the pedestal member side, Since the annular support portion and the inner cylindrical portion are integrally connected by the internal reinforcing ribs, and on the receiving and supporting member side, the inner and outer reinforcing ribs are provided at the intermediate portion connected to the supporting hollow shaft portion. In addition, it is possible to give sufficient strength to each corresponding part, and in the latter case, it is possible to withstand the load distributedly applied from the intermediate part to the receiving and supporting part, and the lower end surface of the pedestal part. The non-slip ring on the stationary surface inserted in the non-slip surface can effectively prevent the stationary state of the pedestal member from slipping. (D) The waist rest portion and the recessed portion provided on the seating surface portion of the seating member are suitable for the side of the waist contacting portion to contact the back side of the waist of the user, and the side of the recessed portion is the tail of the hip. It is suitable for receiving the bone-corresponding part, and can secure a comfortable sitting state for each, and at the same time, the sitting surface anti-slip ring that is engaged with the annular groove of the sitting surface portion keeps the sitting state stable. In addition, the seating surface part ensures the reliable operation of the engaging tongue and, by extension, the engaging claw due to the downward elastic flexibility with weight load, and the reliable release of the seating member from the support member. And promises reengagement engagement. (E) The receiving and supporting bearing interposed between the receiving and supporting member and the seating member serves for stable and smooth rotation of the sitting and supporting member with respect to the receiving and supporting member, and the retainer of the receiving and supporting bearing has the lower surface of both ends. Each of the end plate pieces projected to prevent the adjacent one end from digging into the lower surface of the other end, and the holding holes formed in the retainer are different from the holding pieces on the lower surfaces of both sides. Together, it favorably promotes the rolling motion of the bearing balls.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an appearance of a bathroom chair including a pedestal portion and a seat portion to which an embodiment of the present invention is applied.

FIG. 2 is a cross-sectional view showing an overall configuration corresponding to the line AA portion in FIG. 1 above.

3 (a) is an enlarged sectional view showing details of the detent engagement portion of FIG. 1 above, and FIG. 3 (b) is an enlarged sectional view showing details of the seating surface anti-slip portion shown in FIG. 1 above. It is a figure.

FIG. 4 is an upper surface (upper half portion) and a lower surface (lower half portion) showing the support member constituting the seating portion in the above embodiment taken out.
FIG.

FIG. 5 is an upper surface (upper half portion) and lower surface (lower half portion) view showing a stool member constituting a stool portion of the above embodiment taken out.

FIG. 6 is a developed cross-sectional view showing a receiving and supporting bearing interposed between the receiving and supporting member and the stool member according to the above embodiment.

[Explanation of symbols]

 10 pedestal part 11 pedestal member 11a annular hem part 11b annular shell part 11c annular support part 11d inner cylinder part 11e annular groove 12 female angle screw 13 stationary surface anti-slip ring 14 internal reinforcing rib 20 seating part 21 receiving member 21a supporting hollow shaft Part 21b Intermediate part 21c Inner surface reinforcing rib 21d Outer surface reinforcing rib 21e Receiving part 21f Inner peripheral flange part 21g Drain hole 22 Male angle screw 23 Lower bearing peripheral groove 24 Engaging protrusion 25 Engaging edge 31 Seating member 31a Seating surface part 31b Hip rest Part 31c Through hole 31d Annular groove 31e Locking hole 31f Drainage hole 31g Recessed part 32 Inner tube part 32a Cut slit 33 Engaging tongue 34 Engaging pawl 35 Upper bearing recessing groove 36 Waisting surface anti-slip ring 36a Wedge piece part 41 Bearing 42 Bearing 42 Retainer 42a Holding hole 42b End plate piece 42c Holding piece 43 Ball

Claims (1)

[Scope of utility model registration request] 1. An upper side provided with a lower annular skirt 11a having a stationary surface anti-slip ring 13 on a lower end surface, and an annular shell 11b curved upward from the hem 11a to have a small diameter. Of the annular support portion 11c, and an inner cylindrical portion integrally connected to the inside of the annular support portion 11c by an internal reinforcing rib 14 so as to have a vertical hollow shape, and the female screw 12 is formed on the hollow inner peripheral surface. A support hollow shaft portion having a pedestal member 11 made of 11d and a male screw 22 which is formed into a hollow cylindrical shape and which is screw-fitted into the female screw 12 of the annular support portion 11c so as to be vertically reciprocally movable. 21a, the supporting hollow shaft portion 2
A reinforcing rib 2 is formed on the inner surface and the outer surface by expanding the diameter from the upper side of 1a.
1c and 21d are provided, and a plurality of engaging projections 24 are projected at a predetermined angular interval on the lower surface of the inner peripheral flange portion 21f formed on the lower side in the axial direction, and the engaging projections 24 are engaged with each other. An intermediate portion 21b having a mating edge 25 and a peripheral portion of the intermediate portion 21b are enlarged in diameter to form a saucer shape, and a receiving portion 21 having an upper lower bearing circumferential groove 23 formed on the upper surface of the saucer-like portion.
A support member 21 made of e and a waist support portion 31b on one side of the upper surface, which is flattened by leaving a vertical through hole 31c in the center, and a flat surface on the side of the waist support portion 31b. A seating surface portion 31a in which a recessed portion 31g is formed on the upper surface of the converted portion, and a seating surface anti-slip ring 36 that is circumferentially provided on the upper surface of the seating surface portion 31a is fitted and the lower surface faces the lower bearing circumferential groove 23 downward. Annular groove 31d in which the upper bearing recessed groove 35 is formed, and the through hole 3
1c is provided on the inner peripheral portion of the inner peripheral flange portion 21f so that the inner peripheral collar portion 21f can be fitted therein, and a plurality of independently bendable engaging tongue pieces 33 are provided on the lower side at predetermined angular intervals. Engaging claws 34 that are formed and engage with the engaging edges 25 are arranged on the outer sides of the lower end surfaces of the respective engaging tongue pieces 33, and the engaging claws 34 engage with each other depending on the weight burden applied to the sitting surface portion 31a. The seating member 31 composed of the inner cylindrical portion 32 adapted to be released, and divided into a plurality of parts so as to be interposed between the lower bearing circumferential groove 23 and the upper bearing concave groove 35, and projecting to the lower surfaces of both ends. A retainer 42 having a plurality of holding holes 42a having end plate pieces 42b, and holding pieces 42c projecting from the lower surfaces of both sides of each holding hole 42a, and a bearing held in each holding hole 42a. And a bearing 41 composed of a ball 43 of Both feet on the stool surface 31a of the only member 31 sitting lightly while supported by the floor, lumbar hooking member 3
In the state in which the weight load on 1 is reduced, the support member 21
The engagement of the engagement claw 34 of the stool member 31 with respect to the engagement edge 25 of is retained, and the rotation between the members 21 and 31 is restrained.
When the support member 21 including the stool member 31 can be screwed forward and backward with respect to the pedestal member 11, and when the weight load on the stool member 31 is not reduced, the engagement claw 34 engages the engagement edge 25. Is released, and the bearing 41 for the bearing 21 is received.
A chair for a bathroom, which is configured such that the rotation operation of the stool member 31 via the lever is prioritized so that the support member 21 can be screwed forward and backward with respect to the base member 11.