JP2023057678A - Bathroom nursing chair - Google Patents

Abstract

To provide a bathroom nursing chair capable suppressing pain in the buttocks of a seated person.SOLUTION: A bathroom nursing chair 3 comprising a seat part including a seat frame comprises a central slot 11 extending forward and backward, formed at a center in a horizontal direction of the seat frame 10 of the seat part 4. The seat frame 10 includes a pair of stepped-down parts 12 formed at both left/right sides of the central slot 11 of a seat surface 10a thereof. The stepped-down parts 12 are formed lower than an outer seat surface part 14 surrounding the stepped-down parts 12 of the seat surface 10a to form steps 13 between the stepped-down parts 12 and the outer seat surface part 14.SELECTED DRAWING: Figure 4

Description

TECHNICAL FIELD The present invention relates to a nursing chair for bathroom use, and more particularly to the structure of a seat portion of a nursing chair for bathroom use.

A bathroom care chair used by the elderly or physically handicapped to wash their bodies or take a shower in the bathroom has a higher seat surface than a general bath chair.
Further, as a nursing care chair for a bathroom for a person who finds it difficult to sit up, there is known a chair in which a central slot such as a concave groove or a through groove is formed in the central part of the seat surface in order to wash a private part. (See Patent Documents 1 and 2, etc.). Generally, the width of the central slot is around 10 cm, taking into account the ease of washing the private parts and the fact that the buttocks of the seated person do not get caught.

Japanese Patent Application Laid-Open No. 2007-061509 (Fig. 2) JP 2018-130353 A (Fig. 1)

According to the knowledge of the inventor, the edge portion formed by the edge of the central slot and the seat surface presses the buttocks of the seated person, and the seated person may feel pain or discomfort. In general, when sitting on a chair with a flat seat surface, the distribution of pressure applied to the buttocks is said to be highest around the ischial tuberosities. In addition, in the case of an average-sized person, the distance between the left and right ischial tuberosities is about 11 cm to 15 cm, so when sitting on the bathroom care chair with a central slot, the left and right ischial tuberosities are arranged near the edge. and the pain in the buttocks is amplified. In order to relieve pain in the buttocks when sitting on a chair, it is common practice to put a cushioning material on the seat surface, but if there is a central slot, the pain due to the pressure on the edge cannot be eliminated. . It is conceivable to increase the thickness of the cushioning material, but it was found that if this is the case, the seated person cannot be deeply submerged in the hot water of the bathtub when entering the bathtub together with the chair while seated.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a nursing care chair for a bathroom with a central slot, which can suppress pain in the buttocks of a seated person.

The present invention has been made based on such findings, and is a nursing care chair for bathroom equipped with a seat frame,
A center slot extending in the front-rear direction is formed in the center portion of the seat frame in the left-right direction,
A pair of stepped portions are formed on both left and right sides of the seating surface of the seat frame across the central slot,
The stepped portion is lower than an outer side portion of the seat surface surrounding the stepped portion, and a step is formed between the outer side portion of the seat surface and the stepped portion.

According to the bathroom care chair, the seated person's buttocks are arranged on the stepped portion, so that the pressure applied from the seat frame to the buttocks can be dispersed or relieved. In particular, since the edge portion formed by the edge of the central slot and the seat surface is recessed by the stepped portion of the seat surface, it is possible to prevent the buttocks from being locally pressed by the edge portion. This can relieve pain in the buttocks.
There is no need to increase the thickness of the cushioning material to relieve pain in the buttocks. Therefore, when entering the bathtub together with the chair while seated, the seated person can be deeply immersed in the hot water of the bathtub.

It is preferable that the stepped portion is arranged between a front-rear center portion and a back side end portion of the seat surface.
This allows the ischial tuberosity to be placed on the stepped portion when the seated person sits in a prescribed position on the seat frame. Therefore, it is possible to prevent the ischial tuberosity from being compressed, and to reliably relieve pain in the buttocks.

It is preferable that each of the left and right stepped portions is formed in a substantially semicircular shape in a plan view, with the step as an arc and the edge portion connecting to the central slot as a chord.
This ensures that the seated person's ischial tuberosities are positioned on the stepped portion. In addition, the pressure from the seat frame can be distributed to the buttocks around the ischial tuberosity to prevent the pressure from concentrating on the ischial tuberosity.

Preferably, the stepped portion has a stepped inclined surface that descends toward the central slot.
This ensures that the pressure from the seat frame is distributed to the buttocks around the ischial tuberosity.

The outer seating surface portion has an outer inclined surface that descends toward the step and whose descending slope becomes steeper as it approaches the step,
the step has a steep upward slope from the step-side end of the outer seating surface portion;
It is preferable that the slope of the stepped inclined surface becomes gentler as it approaches the central slot.
As a result, the weight of the seated person can be supported over a wide range of the seat frame. In other words, the pressure from the seat frame can be widely distributed over the buttocks.

The bathroom care chair further comprises a cushion material covering the seat frame,
A central through-hole communicating with the central groove is formed in the central portion of the cushion material in the left-right direction so as to extend in the front-rear direction,
It is preferable that the top surfaces of the stepped covering portion covering the stepped portion and the outer covering portion covering the outer seating surface portion of the cushion material are smoothly connected without a step.
This prevents the stepped portion from appearing in the appearance of the chair. The stepped covering portion is deformed so as to follow the stepped portion due to the load of the seat occupant. The pressure applied from the seat frame to the buttocks can be relieved by the cushioning material.

ADVANTAGE OF THE INVENTION According to the nursing chair for bathrooms which concerns on this invention, it can suppress that a sitting person's buttocks hurt.

FIG. 1 is a perspective view of a wheelchair for bathing including a nursing care chair for bathroom according to one embodiment of the present invention. FIG. 2 is a plan view of the bathroom care chair. FIG. 3 is a plan view of the seat frame of the bathroom care chair. FIG. 4 is a perspective view of the seat frame. 5 is a front sectional view of the seat frame along line VV in FIG. 3. FIG. 6 is a side cross-sectional view of the seat frame taken along line VI-VI of FIG. 4. FIG. FIG. 7(a) is a front cross-sectional view of the seat portion of the nursing care chair for bathroom along line VII-VII in FIG. FIG. 7(b) is a front sectional view showing the seat portion together with the pelvis of the seated person when the seated person is seated.

An embodiment of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, a bathing wheelchair 1 includes a carrier 2 and a bathroom care chair 3. As shown in FIG. A care chair 3 for a bathroom is mounted on a carrier 2. - 特許庁A person requiring assistance (not shown) is seated on the bathroom nursing chair 3 and pushes the carrier 2 to carry the bathroom nursing chair 3 to enter and exit the bathroom (not shown). Furthermore, although illustration is omitted, the bathroom nursing chair 3 can be moved to a support rail installed on the bathtub frame and lifted, so that the person requiring assistance (seated person) can enter the bath while seated. .

As shown in FIGS. 1 and 2 , the bathroom care chair 3 includes a seat 4 and a backrest 5 . The seat portion 4 has a seat frame 10 and a cushion material 20 .

As shown in FIGS. 3 and 4, the seat frame 10 is generally rectangular in plan view. As shown in FIG. 6, the front portion (the left portion in FIG. 6) of the seat surface 10a (upper surface) of the seat frame 10 is inclined upward toward the front. The end of the seat frame 10 on the back side (right side in FIG. 6) rises along the backrest 5 (FIGS. 1 and 2) to form a back rising portion 19.

As shown in FIGS. 3 and 4, a center slot 11 is formed in the center of the seat frame 10 in the left-right direction. The central slot 11 penetrates the seat frame 10 in the thickness direction. The central slot 11 is formed in an oval shape extending forward and backward in plan view. As shown in FIG. 6 , the front end portion (the left end portion in FIG. 6 ) of the central slotted hole 11 is located forward of the intermediate portion of the seat frame 10 in the longitudinal direction. The rear end portion (right end portion in FIG. 6) of the central slot 11 extends to the mid-height portion of the back rising portion 19 .

As shown in FIGS. 5 and 6, the seat surface 10a (upper surface) of the seat frame 10 is generally lowered toward the central portion.
As shown in FIGS. 3 and 4, a pair of stepped portions 12 are formed on both left and right sides of the central slot 11 of the seat surface 10a. The stepped portion 12 is lower than the outer seating surface portion 14 surrounding the stepped portion 12 in the seating surface 10a. A step 13 is formed between the stepped portion 12 and the outer seating surface portion 14 .

As shown in FIGS. 3 and 4, each stepped portion 12 is formed in a substantially semicircular shape in plan view and reaches the central slotted hole 11 . The step 13 constitutes an outer edge of the stepped portion 12 extending in a substantially semicircular shape. In other words, the stepped portion 12 is formed in a substantially semicircular shape in a plan view with the step 13 as an arc and the edge portion 12e connected to the central slot 11 as a chord. The edge portion 12 e constitutes an edge portion formed by the stepped portion 12 and the side hole edge of the central slotted hole 11 .

As shown in FIG. 3, the left and right roughly semicircular stepped portions 12 face each other with the central slot 11 interposed therebetween. These stepped portions 12 are formed in a symmetrical shape.

As shown in FIG. 3 , the stepped portion 12 is arranged between the central portion of the seat frame 10 in the front-rear direction and the back rising portion 19 . Thereby, the stepped portion 12 corresponds to the pelvis A of the seated person correctly seated on the seat frame 10, especially the ischial tuberosity A1 (FIG. 7). Preferably, the widest portion 12c of the stepped portion 12, which spreads to the left and right, corresponds to the ischial tuberosity A1.

As shown in FIG. 5 , each of the left and right stepped portions 12 has a stepped inclined surface 12 a that descends toward the central slot 11 . The descending slope of the stepped inclined surface 12a becomes slightly gentler as it approaches the central slot 11. - 特許庁Therefore, the stepped inclined surface 12a is a concave curved surface with a gentle curvature.

As shown in FIG. 5, the outer seating surface portion 14 has an outer inclined surface 14a that descends toward the step 13. As shown in FIG. The slope of the outer inclined surface 14a becomes steeper as the step 13 is approached. Therefore, the outer inclined surface 14a is a convex curved surface.
The step 13 is a steep upward slope from the step side 13 end of the outer slope 14a.

Furthermore, a plurality of screw holes 16 and communication grooves 17 are formed in the seat surface 10a of the seat frame 10. As shown in FIG. For example, the screw hole portions 16 are arranged on the left and right outer sides of the widest portion 12c of the stepped portion 12 and on the left and right outer seat portion portions 14 on the left and right outer sides of the front end portion of the central slotted hole 11, respectively. Each screw hole portion 16 and the stepped portion 12 are communicated with each other by a communication groove 17 extending left and right.

As shown in FIG. 2, the seat frame 10 is covered with a cushion material 20 . The entire seat surface 10a (upper surface) of the seat frame 10 is covered with the cushion material 20 . A central through-hole 21 is formed in the central portion of the cushion material 20 in the left-right direction. The central through-hole 21 is formed in an oval shape extending in the front-rear direction and communicates with the central slotted hole 11 .
A bathing assistant can wash the private parts of the seated person through the central slot 11 and the central through hole 21 .

In the cushion material 20, the upper surfaces of the stepped covering portion 22 covering the stepped portion 12 and the outer covering portion 24 covering the outer seating surface portion 14 are smoothly connected without a step. Therefore, the stepped part 12 can be prevented from appearing in the appearance of the chair 3. - 特許庁
Preferably, the cushion material 20 is detachable with respect to the seat frame 10 .

As shown in FIG. 7( a ), a gap 12 g is formed between the rear surface of the stepped covering portion 22 and the stepped portion 12 when no load is applied by a seated person or the like.
As shown in FIG. 7(b), when the seated person sits down, the stepped covering portion 22 is deformed along the stepped portion 12 due to the load. More specifically, the left and right portions 20a, 20a of the cushion material 20 sandwiching the central through hole 21 have a portion 23 corresponding to the step 13 as an inflection portion, and the outer covering portion 24 extends upward along the seat surface portion 14. By warping and recessing downward along the stepped portion 12 at the stepped covering portion 22, the stepped portion is curved to have a substantially S-shaped cross section. The gap 12g is almost eliminated by bringing the stepped covering portion 22 into contact with the stepped portion 12.例文帳に追加

According to the bathroom care chair 3 , the periphery of the ischial tuberosity A<b>1 of the seated person's buttocks is arranged on the stepped portion 12 of the seat frame 10 . Thereby, the pressure applied from the seat frame 10 to the buttocks can be dispersed or relieved. Even with the chair 3 having the central slot 11, the edge portion 12e formed by the edge of the central slot 11 and the seat surface 10a is recessed by the stepped portion 12. It is possible to suppress the area from being locally pressed by the edge portion 12e.
In particular, it is possible to ensure that the ischial tuberosity A1 is placed on the stepped portion 12 in a posture in which the seated person sits correctly in a prescribed position on the seat portion 4.例文帳に追加Therefore, the pressure from the seat frame 10 can be prevented from concentrating on the ischial tuberosity A1, and the pressure can be distributed to the buttocks around the ischial tuberosity A1. Furthermore, due to the curved surface shape of the entire seat surface 10a including the stepped portion 12 and the outer seat surface portion 14, the weight of the seated person can be received over a wide range of the seat surface 10a, and the pressure from the seat frame 10 can be spread over the buttocks. can be dispersed.
In addition, the cushion material 20 can absorb and relieve the pressure applied from the seat frame 10 to the buttocks.
As a result, it is possible to suppress pain in the buttocks. Or you can ease the pain.

There is no need to increase the thickness of the cushioning material 20 in order to relieve pain in the buttocks. Therefore, the thickness of the cushion material 20 can be minimized. As a result, when the seated person enters the bathtub together with the chair 3 while seated, the person can be deeply immersed in the hot water of the bathtub.
By making the cushion material 20 removable from the seat frame 10, cleaning can be facilitated. When the cushion material 20 is soiled or torn, it can be easily replaced.

The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the scope of the invention.
For example, the stepped covering portion 22 of the cushion material 20 may be thick enough to fill the gap 12g.
The central slotted hole 11 is not limited to a through hole, and may be a bottomed groove recessed from the seat surface 10a.

INDUSTRIAL APPLICABILITY The present invention can be applied, for example, to a wheelchair for bathing assistance for a person requiring assistance.

A Pelvis A1 Ischial tuberosity 1 Bathing wheelchair 2 Carry 3 Bathroom care chair 4 Seat 5 Backrest 10 Seat frame 10a Seat surface (upper surface)
11 central slot 12 stepped portion 12a stepped inclined surface 12c widest portion 12e edge portion
12g Gap 13 Step 14 Outer seating surface portion 14a Outer inclined surface 16 Screw hole 17 Communication groove 19 Back side end 20 Cushion material 21 Central through hole 22 Stepped covering 24 Outer covering

Claims (6)

A bathroom care chair comprising a seat frame,
A center slot extending in the front-rear direction is formed in the center portion of the seat frame in the left-right direction,
A pair of stepped portions are formed on both left and right sides of the seating surface of the seat frame across the central slot,
The stepped portion is lower than the outer side portion of the seat surrounding the stepped portion of the seat, and a step is formed between the outer side portion of the seat and the stepped portion. Nursing chair. 2. The care chair for bathroom use according to claim 1, wherein the stepped portion is arranged between a front-rear center portion and a back end portion of the seat surface. 3. Each of the left and right stepped portions is formed in a substantially semicircular shape in a plan view, with the step as an arc and the edge connecting with the central slot as a chord. The nursing chair for the bathroom described in . The bathroom chair according to any one of claims 1 to 3, wherein the stepped portion has a stepped inclined surface that descends toward the central slot. The outer seating surface portion has an outer inclined surface that descends toward the step and whose descending slope becomes steeper as it approaches the step,
the step has a steep upward slope from the step-side end of the outer seating surface portion;
5. The bathroom chair according to claim 4, wherein the gradient of said stepped ramp surface tapers toward said central slot. Further comprising a cushion material covering the seat frame,
A central through-hole communicating with the central groove is formed in the central portion of the cushion material in the left-right direction so as to extend in the front-rear direction,
In the cushion material, the stepped covering portion covering the stepped portion and the outer covering portion covering the outer seating surface portion are smoothly connected to each other without steps. The care chair for bathroom according to any one of the items.

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