JPH09380A - Seat member - Google Patents

Abstract

PURPOSE: To provide a seat member capable of preventing the shift of the hips without causing pain. CONSTITUTION: A seat member consists of a base stand 21 having a large number of holes 23 formed on the seat surface thereof and a hip shift preventing element 22 having the protruding parts fitted in the holes 23 of the base stand 21. The hip shift preventing element 22 has the protruding parts on its contact surface side with the base stand 21 and protrudes in a streamline shape from the contact surface side. By this constitution, the protruding parts are fitted in the proper holes 23 corresponding to the size of the hips to attach the hip shift preventing element 22 to the base stand 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sitting tool having a function of preventing the buttocks from being displaced when sitting on an ordinary chair or wheelchair.

[0002]

2. Description of the Related Art For example, a wheelchair for a physically handicapped person as shown in FIG. 6 (only a seat portion is briefly shown in FIG. 6) has a seat plate 30, a back plate (backrest) 32, and an armrest 33. For the purpose of preventing the buttocks from being displaced when sitting on the plate 30, a cylindrical buttocks deviation preventing rod 31 is provided on the seat plate 30 so as to project substantially vertically. When the person with a physical disability sits on the seat plate 30, the buttocks displacement prevention bar 31 comes into contact with the crotch area of the person with a physical disability.

[0003]

In the wheelchair as shown in FIG. 6, since the columnar buttock displacement preventing rod 31 is provided substantially vertically from the seat plate 30, the buttock displacement when the buttock is displaced to the front side. In many cases, the preventive rod 31 directly contacts the crotch and the crotch is pressed by the preventive rod 31, so that the person with disabilities feels pain. For this reason, it is necessary for the attendant to re-seated the physically handicapped person from the position displaced many times to the original normal position while traveling in a wheelchair.

[0004] In order to avoid such a problem, and also when there is no attendant, the waist is fastened to the backrest 32 side with a belt attached to the backrest 32, for example, to prevent the buttocks from shifting. There is also a wheelchair. However, also in this case, if the user sits in a wheelchair for a long time while the waist is fastened with the belt, the waist is often pressed or rubbed by the belt, and the user often feels pain.

Such a buttock displacement is not only experienced by persons with physical disabilities who use a wheelchair as a daily transportation means, but also by ordinary chairs (especially chairs having a backrest). In other words, the buttocks gradually shift to the front side while sitting, and it is easy to become tired and have a bad sitting posture in which the waist is burdened. The present invention has been made in view of such problems, and an object of the present invention is to provide a seating tool capable of preventing a buttocks displacement without causing pain.

[0006]

In order to achieve the above-mentioned object, a seat according to claim 1 of the present invention abuts on a base which is a seating surface and a crotch contact in a state of being seated on the base. It is characterized in that it comprises a buttock displacement prevention body provided at a position, and the buttock displacement prevention body is erected in a streamlined manner from the rear to the front of the seat surface.

Further, the seating device according to the present invention comprises a base having a large number of holes on the seating surface, and a detachable buttocks displacement preventive body having a convex portion fitted into the holes of the base. It is characterized in that the buttock displacement prevention body has a convex portion on the contact surface side with respect to the base, and is raised in a streamline shape from the contact surface side.

[0008]

In the seating apparatus according to the first aspect of the present invention, since the buttock displacement preventing body is raised in a streamlined manner from the rear to the front of the seat surface, even if the buttock is displaced to the front side, the crotch is ergonomically determined. There is no pressure from the buttocks to prevent pain. Also, since it fits well to the crotch, if the position of the seating tool is first set appropriately with respect to the chair, the buttocks will not be displaced.

In the seating apparatus according to the second aspect of the present invention, since the buttock displacement prevention body is attachable to and detachable from the base, the buttock displacement prevention body can be attached to an appropriate position of the base according to one's body size. That is, by fitting the convex portion of the buttock displacement prevention body into a desired hole of the base, the buttock displacement prevention body can be attached to a position on the base that is suitable for the size of the buttock. As a result, a better fit can be obtained, and the buttocks can be more effectively prevented without causing pain.

Further, by forming the base and / or the buttocks displacement preventive member with an elastic material, particularly by forming the base with an elastic material, the sitting comfort is improved, the buttocks are less likely to slip, and the buttocks are also tired. It will be difficult. In addition, in any case, the belt for preventing the buttocks displacement is not particularly necessary, and it is more effective in reducing the pain.

[0011]

Embodiments of the present invention will be described below with reference to embodiments. First, FIG. 1 shows a seat according to claim 1. The seat 10 includes a quadrangular base 11 that serves as a seating surface, and a buttock displacement prevention body 12 that is provided in the front center of the base 11. The buttocks misalignment preventive body 12 is provided at a position where it abuts against the crotch when seated on the base 11, and rises in a streamlined manner from the rear to the front of the seat surface. In addition,
The base 11 and the buttock displacement prevention body 12 are made of wood or resin, and may be made of different materials. Further, the base 11 and the buttocks shift preventive body 12 may be integrally molded, or when the materials are different from each other, the buttocks shift preventive body 1 is attached to the base 11.
2 may be fixed with an adhesive or a screw.

The seat 10 is mounted on a seat plate of a wheelchair or an ordinary chair for use. It may be attached simply by placing it on a seat plate or may be fixed by passing a hole at an appropriate position (end) and passing a string or the like. At that time, it is preferable to appropriately set the position of the sitting tool 10 with respect to the seat plate. In this sitting tool 10, since the shape of the buttock displacement prevention body 12 is ergonomically considered, the buttock displacement prevention body 12 fits in the crotch when sitting and not only can the buttock displacement be effectively prevented. , There is no pain in the crotch.

FIG. 2 shows a seat according to a second aspect of the present invention. The seating device 20 is also composed of a rectangular base 21 and a buttock displacement preventing body 22. The base 21 has a large number of circular holes 23 over substantially the entire seating surface. The holes 23 penetrate the base 21 and are regularly formed at the same pitch vertically and horizontally. As shown in FIG. 3, the buttock displacement prevention body 22 has a flat surface on the contact surface side with respect to the base 21, and has a single cylindrical convex portion 24 vertically projecting from the flat surface. It is streamlined from the flat side. 3 and 4, by fitting the convex portion 24 into the hole 23 of the base 21,
The buttock displacement prevention body 22 can be attached to the base 21, and the buttock displacement prevention body 22 can be easily removed by pulling it up. In addition, here, the length of the protrusion 24 is equal to that of the hole 23.
Is set shorter than the depth (the thickness of the base 21).

The convex portion 24 is provided at a position near the rear portion of the buttocks misalignment preventive body 22, but one or two convex portions may be added at a position near the front portion (see a dotted line portion in FIG. 3). Convex part 2
There is no limit to the number of 4. However, when a plurality of protrusions 24 are provided, it is necessary to match the interval between the protrusions and the pitch of the holes. Further, the hole 23 is not necessarily the base 21 as shown in FIG.
It is not necessary to penetrate through the base 2, and if the convex portion 24 can be fitted, the base 2
It may be up to the middle of the wall thickness of 1.

Another example of the fitting form of the convex portion 24 and the hole 23 is shown in FIG.
Shown in In FIG. 5A, the central portion of the convex portion 24 'has a narrow width, and the hole 23' has a similar shape correspondingly. In FIG. 5B, the peripheral surface of the convex portion 24 ″ is expanded in an arc shape, and the hole 23 ″ has the same shape. By doing so, when the protrusions 24 ′ and 24 ″ are fitted into the holes 23 ′ and 23 ″, respectively, the protrusions are less likely to come out of the holes, and the buttocks slip prevention body 22 is securely attached to the base 21. Can be installed on.

This seat 20 is also attached to the seat plate of the chair in the same manner, and the hole 23 at an appropriate position according to one's body size.
The convex portion 24 is fitted to the
Attach to In this case, since the buttock displacement prevention body 22 fits more into the crotch, it is possible to prevent the buttock displacement while being seated without paying attention to the existence of the buttock displacement prevention body 22. In the seat 20, the base 21 and / or the buttock displacement prevention body 2
2 may be an elastic material. As the elastic material, foam such as rubber, plastic and sponge is most suitable. In particular, by constructing the base 21 with an elastic material, the base 21 is provided with appropriate cushioning properties as compared with a rigid base, so the base 21 is deformed according to the shape of the buttocks and conforms to the buttocks. However, the buttocks are less likely to slip. Further, when the buttocks are moved, the base 21 is locally deformed, so that the buttocks are less likely to get tired. Furthermore,
Due to the synergistic effect of the large number of holes 23 and the elastic material, the air permeability of the base 21 is improved, and it is possible to prevent the rump from getting stuffy.

[0017]

According to the seating apparatus of the first aspect of the present invention, the buttock displacement preventive body is erected in a streamlined manner from the rear to the front of the seat surface. Therefore, even if the buttock is displaced to the front side, from the ergonomic point of view. The crotch is not pressured by the buttocks slippery body and does not cause any pain. Also, since it fits well to the crotch, if the position of the seating tool is first set appropriately with respect to the chair, the buttocks will not be displaced.

In the seating apparatus according to the second aspect of the present invention, the buttock displacement prevention body is attachable to and detachable from the base, so that the buttock displacement prevention body can be attached to an appropriate position of the base base according to one's body size. As a result, a better fit can be obtained, and the buttocks can be more effectively prevented without feeling pain.
Furthermore, by forming the base and / or the buttocks displacement preventing body with an elastic material, particularly by forming the base with an elastic material, the sitting comfort is improved, the buttocks are less likely to slip, and the buttocks are less likely to be tired. Moreover, the breathability of the base is improved, and the stuffiness of the buttocks can be prevented.

In addition, in any case, a belt for preventing the buttocks displacement is not particularly required, and it is more effective for alleviating the pain.

[Brief description of drawings]

FIG. 1 is a perspective view of a sitting tool according to an embodiment.

FIG. 2 is a perspective view of a seat according to another embodiment.

FIG. 3 is a side view showing a buttock displacement prevention body of a seating device.

FIG. 4 is a partial cross-sectional view of the base of the seat.

FIG. 5 is a view showing an example of a form of fitting between the convex portion of the buttocks shift preventive body and the hole of the base.

FIG. 6 is a schematic view showing a seat portion of a wheelchair.

[Explanation of symbols]

 10, 20 Seating device 11, 21 Base 12, 22 Gluteal shift prevention body 23 Hole 24 Convex part

Claims (3)

[Claims] 1. A base which serves as a seat surface, and a buttocks displacement prevention body which is provided at a position where it abuts against the crotch when seated on the base, the buttocks displacement prevention body being behind the seat surface. A seating tool characterized by being raised in a streamlined direction from the front to the front. 2. A base having a large number of holes on a seat surface and a detachable buttocks displacement preventive body having a convex portion fitted into the holes of the base, wherein the buttocks displacement prevention body is a base. A seating tool having a convex portion on the contact surface side with respect to, and protruding in a streamlined manner from the contact surface side. 3. The seating apparatus according to claim 2, wherein the base and / or the buttocks displacement preventing body is made of an elastic material.