TWM590014U - Cushion for wheelchair - Google Patents

Abstract

This creation provides a cushion for wheelchairs, which has a simple structure and can be easily installed on a wheelchair with one touch, and its use form is not limited to one. The cushion 1 of this creation is formed into a slightly rectangular shape, and includes: a pair of left and right internal components 2, which is provided with a pair of left and right inner covers 21 formed into a bag shape from a highly airtight material, and are respectively housed in each inner cover 21 internal buffer material 22, valves 23 provided in each inner cover 21 to restrict the air from entering and exiting with respect to each inner cover 21; and a bag-shaped outer cover 3, which houses the pair of left and right internal members 2 inside; When the long side direction is the left-right direction and the short side direction is the up-down direction, the left-right width B is larger than the left-right width b between the left and right armrests 11 of the chair portion 10, and the structure can be centered in the left-right width direction The boundary line L in the up-down direction of the part is used as a reference point (start point → base point) to bend the left and right into a V shape.

Description

Wheelchair cushion

This creation is about a cushion for wheelchairs to support the back and waist of users sitting in wheelchairs.

If a person sits in a wheelchair, office chair, or car seat for a long time, his back may feel pain. In particular, when the shape of the back of a wheelchair or seat does not conform to the shape of a person's back, the person's back may sometimes cause pain.

Therefore, Patent Document 1 proposes a cushion that sandwiches the cushion between the back of a person and the back of a chair or seat, and uses the elastic deformation of the cushion to complement the shape of the back of the chair or seat, and borrows By making the contact surface between the cushion and the back conform to the shape of the back, the pain in the back can be relieved. The cushion is formed into a slightly rectangular shape and includes: left and right paired internal members, which are provided with a pair of left and right inner covers in a bag shape made of a highly airtight material, cushioning materials respectively housed in each inner cover, and respectively provided on A valve on each inner cover; and a bag-shaped outer cover, which houses the pair of left and right internal components inside.

In the above-mentioned cushion, by opening and closing the valve to adjust the amount of air in the left and right paired inner covers, the thickness of the left and right paired internal components can be independently adjusted to the left and right, so even if there is a left and right deviation in the human body At this time, the deviation can be corrected so that the contact surface between the cushion and the back conforms to the shape of the back. Here, "body" refers to the human body (from the shoulder to the waist).

In addition, for a user (occupant) of a wheelchair equipped with a chair, for example, with regard to the spine and the left and right sides of the body have paralysis, the body tilts toward the paralyzed side, and there is a problem that the operation of the wheelchair is hindered. . In this way, if the user's body is tilted while sitting, the pelvis also tilts backwards due to the sitting posture, causing back pain, etc., and restricting going out in a wheelchair, etc., which also causes obstacles in daily life.

Therefore, Patent Document 2 proposes a body support cushion that can support the user's body in a wheelchair or the like. The body support cushion is composed of a first cushion portion arranged in front of the seat back of a wheelchair or the like, and second and third cushion portions arranged on the inner side near the left and right armrests. The first cushion portion is formed by The first attachment member such as a strap is attached to the seat back, and the second and third cushion parts are also attached to the bracket of the armrest by the second and third attachment members such as the strap. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Utility Model Registration No. 3204798 [Patent Document 2] Japanese Patent No. 6254521

[Problems to be solved by creation]

However, the cushion of Patent Document 1 is only arranged parallel to the back of the seat and is flat, so it hardly has the function of supporting the lean of the body, and the cushioning material has only one kind of hardness, so the support force of the body is insufficient. Also, the body support cushion proposed in Patent Document 2 includes a first cushion portion that supports the user's body from the back side, and second and third cushion portions that support the user's body from the left and right sides. The first to third cushion parts are attached to the wheelchair or the like by the first to third attachment members, respectively, so the structure is complicated, and there is a problem that the procedures for attaching to the wheelchair and the like are complicated and time-consuming.

In addition, the above-mentioned body support cushion is placed on the seat of a wheelchair or the like in a form and sits on the top, and the cushion is used as a seat cushion. Therefore, there is a problem in that its usage form is limited.

This creation was completed in view of the above-mentioned problems, and the objective is to provide a wheelchair cushion with a simple structure, which can be easily installed on a wheelchair with one touch, and the use form is not limited to one. [Means to solve the problem]

In order to achieve the above purpose, the cushion of this creation is formed into a slightly rectangular shape, including: a pair of left and right internal components, which is provided with a pair of left and right inner covers in a bag shape made of a highly airtight material, and are respectively housed in each inner cover Internal cushioning materials, valves provided on each inner cover respectively; and a bag-shaped outer cover, which houses the pair of left and right internal components; the characteristics of the cushion are: When the side direction is the up-down direction, the left-right width is greater than the left-right width between the left and right armrests of the wheelchair, and the vertical boundary of the center of the left-right width direction can be used as a reference point (start point → base point) (Start point → base point) and bend left and right into a V shape.

According to this creation, because the left and right widths of the wheelchair cushion are set to be larger than the left and right widths between the left and right armrests of the wheelchair, when the cushion is placed in front of the back of the wheelchair, the wheelchair cushion is It is attached to a wheelchair in a state where the left and right sides are bent into a V shape with the boundary line provided at the center portion in the left-right direction as a reference point (start point→base point). Therefore, a user sitting in a wheelchair is supported by a cushion for a wheelchair that is bent into a V shape at the same time on both the back, waist, and both left and right sides of the wheelchair, thereby correcting the left-right deviation of the user's body. As a result, even if the user sits in the wheelchair for a long time, the user's back and waist will not cause pain, and the user can continue to sit in the wheelchair in a comfortable state. In addition, because the cushion for wheelchairs is composed of monomers, its structure is simplified and costs can be reduced.

Next, the cushion for a wheelchair can be used even when it is placed on the seat portion of the wheelchair, so the usage form is not limited to one.

In the cushion for a wheelchair described above, a recessed portion that is recessed toward the center portion in the vertical direction may be formed at the central portion of the upper and lower long sides in the left-right width direction, and the depth of one recessed portion may be set greater than the depth of the other recessed portion.

According to the above configuration, when the cushion for the wheelchair is arranged so that the first recess with a shallow depth is located below, the position of contact with the back and waist of the user is located at a low position. On the other hand, when the cushion for wheelchairs is arranged so that the deep second recessed portion is located below, the position of contact with the back and waist of the user is located at a high position. Therefore, the arrangement of the cushion for the wheelchair, that is, the arrangement in which the first concave portion is located below or the second concave portion is located below can be selected according to the user's physique, thereby enabling optimal support corresponding to the user's physique.

In addition, in the cushion for a wheelchair, the cushioning material is composed of two layers with different hardnesses, and a layer with a low hardness may be arranged so that the layer is located on the side of the user's body.

According to the above configuration, the cushioning material forming a double-layer structure is arranged such that the layer with low hardness is located on the side of the user's body, and the change in posture of the user can be suppressed by the layer with high hardness, so that the left-right deviation of the user's body can be effectively corrected .

Furthermore, in the cushion for a wheelchair, a non-slip portion may be provided on the back of the cover.

According to the above configuration, the anti-slip portion provided on the back of the cover can be surely installed without sliding the wheelchair cushion on the wheelchair.

In addition, in the cushion for a wheelchair, attachment means for attaching the cushion to a wheelchair may be provided on the back of the cover. Here, the attachment means may be constituted by two straps having one end respectively attached to the left and right ends of the cover, and a connecting tool that connects the other ends of the two straps to each other.

According to the above configuration, after the two straps constituting the attachment means are wound behind the wheelchair, the ends are connected to each other with a fastener such as a fastener, whereby the wheelchair cushion can be easily installed with one touch For wheelchairs. [Effect of creation]

According to this creation, the following effect can be obtained: the structure of the wheelchair cushion is simplified, and the cushion can be simply installed on the wheelchair with one touch, and the use form of the wheelchair cushion can be diversified.

The following describes the embodiment of this creation based on the drawings.

[Structure of cushion for wheelchair] First, the basic structure of the wheelchair cushion of this creation will be described below with reference to FIGS. 1 to 5. Here, FIG. 1 is a front view of a cushion for a wheelchair of the creation, FIG. 2 is a sectional view of line XX of FIG. 1, FIG. 3 is a sectional view of line YY of FIG. 1, and FIG. 4(a) is a wheelchair of the creation Fig. 4(b) and (c) are rear views of the cushion pad for omitting the mounting means of the wheelchair cushion, and Fig. 5 is a front view of one side internal member of the wheelchair cushion. In addition, as shown in FIG. 1, the cushion 1 for a wheelchair of the present invention is formed as a whole slightly rectangular in front view. In the following description, the longitudinal direction (width direction) of this cushion 1 for a wheelchair is referred to as “left and right The "direction" refers to the short-side direction (height direction) as the "vertical direction", and the left-right direction (thickness direction) shown in FIG. 2 as the "depth direction".

The cushion 1 for wheelchairs of this creation, as shown in FIGS. 2 and 3, is basically composed of a cushioning internal member 2 and a bag-shaped outer cover 3 that houses the internal member 2 inside. The surface (the surface on the side that is in contact with the user's body during use) is covered with a thin and flexible mesh fabric member 4. Next, as shown in FIG. 1, in the front view of the cushion 1 for a wheelchair that is formed into a long rectangular shape that is long and flat in the left-right direction, each vertex (four corners) is rounded to form rounded corners, and the long side on the upper side The central portion in the left-right direction is formed with a first recess 1a recessed downward (the center portion in the vertical direction), and the central portion in the left-right direction of the lower long side is formed with a second recess 1b recessed upward (the center portion in the vertical direction) . Here, as shown in FIG. 1, when the depths of the first concave portion 1 a and the second concave portion 1 b are h1 and h2, respectively, the depth h2 of the second concave portion 1 b is set to be greater than the depth h1 of the first concave portion 1 a (h2> h1). Therefore, the cushion 1 for wheelchairs of this creation has a bilaterally symmetrical shape and a vertically asymmetrical shape.

The width B (see FIG. 1) of the wheelchair cushion 1 is set to be larger than the left and right armrests 11 of the chair portion 10 included in the wheelchair 50 shown in FIGS. 6 and 7 using the cushion 1, for example. The width b (B>b). The height H of the wheelchair cushion 1 is of course set to be smaller than the left and right widths B (H<B), and the thickness T (see FIGS. 2 and 3) is of course set to be smaller (thinner) than the height H (T<H) .

Next, as shown in FIGS. 1 and 3, the center portion in the left-right width direction of the cushion 1 for a wheelchair is formed with a groove-shaped boundary line (boundary line of the paired left and right internal members 2) extending linearly downward from below In the use state (see FIG. 6) of the wheelchair cushion 1 described later, as shown by the broken line in FIG. 3, the cushion 1 can be bent in the left-right direction with the boundary line L as a reference point (start point → base point) It becomes V-shaped when viewed from above.

Here, the basic constitutional requirements of the wheelchair cushion 1 of the present creation, that is, the constitution of the inner member 2 and the outer cover 3 will be described in detail.

(Internal components) The inner member 2 is a pair of left and right members, as shown in FIG. 2 and FIG. 3, and includes: a pair of left and right inner covers 21, which are formed into a bag shape from a highly airtight material; and a cushioning material 22, which is housed in each inner cover, respectively The inside of 21; and valves 23 are provided in each inner cover 21, respectively, to restrict the entry and exit of air relative to each inner cover 21. In addition, FIG. 5 shows only the internal member 2 on one side (left side), but since the configuration of the internal member 2 on the other side (right side) is the same as the configuration of the internal member 2 on one side, its illustration is omitted.

Here, each of the left and right inner covers 21 is formed into a bag shape from a flexible resin and rubber or a material combining these with fibers, and the edges are hermetically sealed by heat fusion. Next, the valves 23 are attached to the tops (corners) of the long sides on the upper side of each inner cover 21, respectively. Specifically, as shown in FIG. 5, a round hole-shaped hole 21 a (only one side is shown in FIG. 5) is formed on the top (corner portion) of each inner cover 21, and each valve 23 passes through each hole 21 a Installed in it. Here, each valve 23 is provided with a cover 23a screwed together. If the cover 23 is screwed in and locked, the valve 23 is closed to prevent air from entering and exiting the inner cover 21. If the cover 23a is turned When it is released, the valve 23 is opened to allow air to enter and exit relative to the inner cover 21.

The cushioning material 22 housed in the paired left and right inner covers 21 is made of a foam material such as a polyurethane foam material having elasticity and cushioning properties (impact absorption). However, in this embodiment, as shown in FIG. As shown in FIGS. 2 and 3, the cushioning material 22 has a double-layer structure formed by the first layer 22A and the second layer 22B having different hardnesses. In addition, in the present embodiment, the hardness of the first layer 22A is set to be lower than that of the second layer 22B, and the first layer 22A having a low hardness is disposed so as to be located on the body side (front side) of the user. In addition, as the material of the cushioning material 22 (the first layer 22A and the second layer 22B), a natural material containing pure cotton or sponge is used as a raw material to become cotton-like, and it is also possible to twist the thread of a resin having flexibility The creator, porous glue, etc.

Next, as shown in FIG. 3, the paired internal members 2 configured as described above are housed in a state where the left and right sides of the outer cover 3 face each other.

(Outer cover) The outer cover 3 covering the pair of left and right inner members 2 from the outside is formed into a bag shape using a flexible polyester or the like as a material, and the upper and lower central parts of the back surface are as shown in FIG. 4(b) , A slit-shaped opening 3a long in the left-right direction is formed. The opening portion 3a can be opened and closed by a zipper 31, and the opening portion 3a can be opened to fit the left and right internal members 2 into the inside of the cover 3 for storage. Next, after storing these internal members 2 inside the outer cover 3, the opening 3a is closed by the zipper 31 so that the internal member 2 does not fall out of the outer cover 3. In addition, as shown in FIG. 4(c), two fabrics 3A, 3B may be used to constitute the back surface of the cover 3, and the two fabrics 3A, 3B may be overlapped by a predetermined length in the central portion in the left-right direction. An opening 3b is formed between the end (free end) of one side cloth 3A and the other side cloth 3B, and an opening 3c is formed between the end (free end) of the other side cloth 3B and the side cloth 3A. With such a configuration, when the inner member 2 is housed inside the outer cover 3, the valve 23 is opened, the cushion material 22 in each inner cover 21 is compressed, and the inner member 2 is made smaller, the outer cover 3 The side cloth 3A is pulled toward the outside of the paper surface in FIG. 4(c) to open the side opening 3b, and the internal member 2 can be put into the outer cover 3 for storage from the opened opening 3b. In addition, the internal member 2 inserted from the opening 3b is accommodated in the inside of the cover 3 through the other opening 3c.

In addition, as shown in FIG. 4, the left and right side portions of the back surface of the outer cover 3 are respectively provided with strip-shaped anti-skid portions 32 in the up-down direction. Here, each of the left and right anti-skid portions 32 is formed by coating rubber or resin having a large sliding resistance on the surface of the belt where the synthetic fiber is sewn.

As shown in FIG. 4( a ), an attachment portion 33 for attaching the wheelchair cushion 1 to the chair portion 10 (see FIG. 6) is provided at the middle portion of the back of the cover 3 in the vertical direction. Here, the mounting means 33 is composed of two left and right straps 34a, 34b which are respectively attached to the left and right ends of the outer cover 3 at one end in the longitudinal direction, and a fastener 35 which is a connecting tool for connecting these The other ends (free ends) in the longitudinal direction of the straps 34a and 34b are connected to each other. In addition, the fastener 35 is a conventional element, whereby the two straps 34a and 34b can be easily connected to each other with one touch, and the connection between the two can also be easily released. Moreover, the length of the two straps 34a and 34b can be adjusted arbitrarily by the fastener 35.

[Use form of cushion for wheelchair] Next, the use form of the wheelchair cushion 1 configured as described above will be described.

<Use form 1> FIG. 6 is a perspective view showing a wheelchair 50 in the form in which the cushion 1 for wheelchairs of the present invention is applied to the chair portion 10. Here, the wheelchair 50 is supported on the ground or floor by a pair of left and right wheels 52 rotatably attached to the tubular bracket 51 and a pair of left and right casters 53 rotatably attached to the lower portion of the front end of the bracket 51 And can move on it. In addition, on the outer sides in the width direction of the left and right wheels 52, ring-shaped hand-push rims 54 are respectively installed to allow a user (occupant) to rotate the hand with his hands.

In addition, a chair portion 10 for a user to sit in the center of the bracket 51 is provided. The user sitting on the chair portion 10 grasps the left and right hand push rim 54 with his hand to rotate it. The wheelchair 50 runs. In addition, right and left armrests 11 are provided in pairs on the left and right of the chair portion 10.

In the wheelchair 50 configured as described above, the cushion for a wheelchair 1 of the present invention is arranged in front of the back 12 of the chair portion 10 in the state shown in FIG. 1 by the mounting means 33 provided on the back thereof (see FIG. 4(a )), the chair cushion 10 is attached to the back 12 of the chair portion 10. That is, the connection of the fastener 35 to the left and right straps 34a, 34b by the attachment means 33 shown in FIG. 4(a) is released, and the left and right straps 34a, 34b are wound to the rear of the seat back 12 of the chair portion 10 Then, the two are connected by a fastener 35, whereby the cushion 1 for a wheelchair can be easily attached to the seat back 12 of the chair portion 10 with one touch. In this case, as described above (refer to FIG. 4 ), the left and right anti-skid portions 32 extending in the vertical direction are provided on the back of the wheelchair cushion 1 (cover 3 ), so the wheelchair cushion 1 can be securely installed and Avoid sliding on the back 12 of the chair portion 10.

In addition, in the cushion 1 for a wheelchair of the present invention, as described above, the width B in the left-right direction is set to be larger than the width b in the left-right direction between the left and right armrests 11 of the chair portion 10 (B>b). The cushion 1 uses the boundary line (the boundary line between the left and right internal members 2 in the form of this embodiment) L formed at the center of the left-right direction as a reference point (start point → base point), as shown by the dotted line in FIG. 3, as It is attached to the seat back 12 of the chair portion 10 in a state where the left-right direction is bent into a V shape. Therefore, the user sitting in the chair portion 10 of the wheelchair 50 can support the back and waist and the left and right side portions of the wheelchair cushion 1 at the same time to correct the left-right deviation of the user's body. As a result, even if the user sits in the chair portion 10 for a long time, the user's back and waist will not cause pain, and the user can continue to sit on the chair portion 10 in a comfortable state.

In addition, in the cushion 1 for a wheelchair of the present creation, as described above (see FIGS. 2 and 3 ), the left and right cushion materials 22 provided on the left and right internal members 2 are used as the first layer 22A and the second layer 22B. Double layer structure, and the hardness of the first layer 22A on the side of the user's body is lower than the hardness of the second layer 22B, so the soft first layer 22A is in contact with the user's body, and the harder second layer 22B Effectively correct the left-right deviation of the user's body.

Next, in the cushion 1 for wheelchairs of this creation, the thickness of the left and right inner members 2 can be adjusted arbitrarily. That is, if the internal member 2 is pressed with the valve 23 provided in the internal member 2 opened, the cushioning material 22 provided thereon is compressed, and the air in the inner cover 21 is discharged from the valve 23 to the outside, but When the valve 23 is closed in this state, the flow of air (outside air) into the inner cover 21 is prevented, the inner member 2 maintains a compressed state, and its thickness becomes thin. Next, because the internal member 2 is in a compressed state, when the valve 23 is opened, the cushioning material 22 expands due to the elastic restoring force and returns to the original state, and the outside air (outside air) is attracted to the inner cover through the valve 23 Within 21, as a result, the thickness of the inner member 2 becomes thicker (returns to the original thickness).

Therefore, in the cushion 1 for a wheelchair of the present invention, by individually adjusting the thickness of the left and right internal members 2 according to the left and right deviation of the user's body, the left and right deviation of the user's body can be effectively corrected.

In addition, in the cushion 1 for a wheelchair of the present invention, as shown in FIG. 1, a first concave portion 1 a and a second concave portion 1 b are formed above and below the central portion in the left-right direction, as shown in FIG. 6, so that the second concave portion 1 b is located below When the wheelchair cushion 1 is configured in such a manner, the second recess 1b can prevent the user sitting on the chair 10 from interfering with the cushion 1 of the user's buttocks, thereby preventing the user from pushing the buttocks by the cushion 1 Was pushed forward. Similarly, in the case where the cushion 1 for wheelchairs is arranged with the first recess 1a located below, the hips of the user sitting on the chair 10 can also be prevented from interfering with the cushion 1 by the first recess 1a, Therefore, the user can be prevented from being pushed forward.

In addition, the cushion 1 for wheelchairs of this creation is as described above (see FIG. 1), because the depth h2 of the second recess 1b is set to be greater than the depth h1 of the first recess 1a (h2>h1), as shown in FIG. 6 It is shown that when the cushion 1 is arranged so that the second recess 1b with a deeper depth is located below, the position of contact with the back and waist of the user is located above. On the other hand, when the cushion 1 is arranged so that the first recessed portion 1a with a shallow depth is located below, the position of contact with the back and waist of the user is located below.

Therefore, the arrangement of the wheelchair cushion 1 is selected according to the user's physique, that is, whether the first concave portion 1a is located below or the second concave portion 1b is located below, thereby enabling optimal support according to the user's physique.

As described above, according to the wheelchair cushion 1 of the present creation, the left-right width B of the cushion 1 is set to be larger than the left-right width b between the left and right armrests 11 of the chair portion 10 (B>b). When the cushion 1 is mounted on the chair portion 10, as shown by the broken line in FIG. 3, the cushion line 1 is bent into a V shape in the left-right direction with the boundary line L of the central portion in the left-right direction as a reference point (start point → base point). Therefore, the following unique effects can be obtained.

That is, even if the cushion 1 for a wheelchair is constituted by a single body, when the cushion 1 is used, by bending the cushion 1 into a V shape in the left-right direction, the user sitting on the chair portion 10 has a back 1. The waist cushion and the left and right side portions thereof are bent into a V-shaped wheelchair cushion 1 at the same time to support the left and right deviations of the user's body. As a result, even if the user sits in the chair portion 10 for a long time, the user's back and waist will not cause pain, and the user can continue to sit in the chair portion 10 in a comfortable state. Next, the cushion 1 for wheelchairs is constructed as a single unit, and its structure is simplified, and cost reduction can be achieved.

In addition, the cushion 1 for wheelchairs can also obtain the effect of being easily attached to the chair portion 10 with one touch by a single attachment means 33.

<Use form 2> Next, the use form 2 of the wheelchair cushion 1 of the present creation will be described based on FIG. 7.

FIG. 7 is a perspective view showing the wheelchair 50 of the usage form 2 of the wheelchair cushion 1 of the present creation. In the usage form 2, the wheelchair cushion 50 for the wheelchair 50 is used in the same manner as the usage form 1. FIG. Therefore, in FIG. 7, the same requirements as those shown in FIG. 6 are given the same symbols, and the following description of these elements will be omitted.

In this usage form, as shown in FIG. 7, the cushion 1 for wheelchair of the present creation is placed on the seat portion 13 of the chair portion 10 and used. That is, the user sitting on the chair portion 10 provided in the wheelchair 50 uses the cushion 1 for a wheelchair as a seat cushion under the buttocks. In this case, the cushion 1 for wheelchairs is attached to the seat part 13 of the chair part 10 by the attachment means 33 (refer FIG. 4(a)) provided in the back. That is, the fastener 35 of the mounting means 33 shown in FIG. 4(a) is uncoupled from the left and right straps 34a, 34b, and the left and right straps 34a, 34b are wound under the seat portion 13 and then fastened The piece 35 connects the two, whereby the cushion 1 for a wheelchair can be easily attached to the seat portion 13 of the chair portion 10 with one touch. In this case, as described above (see FIG. 4 ), the bottom surface of the wheelchair cushion 1 is provided with left and right anti-skid portions 32, and the wheelchair cushion 1 can be securely attached to the chair portion 10 without sliding. Seat 13.

As described above, the wheelchair cushion 1 provided on each seat portion 13 of the chair portion 10 of the wheelchair 50 functions to support the lower body of the user sitting above it and relieve the impact that the user receives from the wheelchair 50 . As a result, even if the user continues to sit on the chair portion 10 of the wheelchair 50 for a long time, the burden on the user can be reduced, and the user can comfortably ride the wheelchair 50 for a long time. In addition, in this usage form, the cushions 22 provided on the inner members 2 of the wheelchair cushion 1 respectively constitute a two-layer structure with the first layer 22A having a low hardness and the second layer 22B having a high hardness (see FIG. 3) And, the first layer 22A with low hardness is arranged so that the user's body side (upper side) is located.

In addition, when the user kicks the ground or floor with one foot and moves together with the wheelchair 50, if the thickness of the side of the wheelchair cushion 1 is thinned, the user can kick the foot Power is efficiently transferred to the ground or floor. In this case, the thickness of the cushion 1 for a wheelchair can be easily adjusted by the aforementioned method.

Although the two usage forms of the wheelchair cushion 1 of the present creation have been described above, the usage form of the wheelchair cushion 1 is not limited to one, and the usage form of the cushion 1 may be various.

In addition, although the description has been given of the use of the wheelchair cushion 1 of the present invention for the chair portion 10 of the wheelchair 50, the wheelchair cushion 1 of the present invention can be applied to any wheelchair other than the wheelchair 50 in the same manner.

In addition, this creation is not limited to the embodiments described above, and of course various modifications can be made within the scope of the patent application registered in the utility model and the technical ideas described in the description and drawings.

1‧‧‧Cushion for wheelchair 1a‧‧‧The first recess of the cushion for wheelchair 1b‧‧‧Second recess of cushion for wheelchair 2‧‧‧Internal components 21‧‧‧Inner cover 21a‧‧‧Hole of inner cover 22‧‧‧Buffer material 22A‧‧‧Layer 1 of cushioning material 22B‧‧‧Layer 2 of cushioning material 23‧‧‧Valve 23a‧‧‧ valve cover 3‧‧‧Outer cover 3A, 3B‧‧‧covering fabric 3a～3c‧‧‧The opening of the cover 31‧‧‧Zipper 32‧‧‧Slip resistant part 33‧‧‧Installation method 34a, 34b‧‧‧Girdle 35‧‧‧ fasteners (links) 4‧‧‧ Mesh fabric member 10‧‧‧chair chair 11‧‧‧Handrail of wheelchair 12‧‧‧Back of wheelchair 13‧‧‧ Wheelchair seat 50‧‧‧ wheelchair 51‧‧‧Bracket for wheelchair 52‧‧‧ Wheels for wheelchairs 53‧‧‧ Wheelchair casters 54‧‧‧ Wheel pushing wheel B‧‧‧Left width of wheelchair cushion b‧‧‧Width of the armrest of the wheelchair in the left-right direction H‧‧‧ Height of cushion for wheelchair h1‧‧‧Depth of the first recess h2‧‧‧Depth of the second recess L‧‧‧Boundary T‧‧‧ Thickness of wheelchair cushion

Figure 1 is a front view of the cushion for the wheelchair created by this author. Fig. 2 is a sectional view taken along line X-X of Fig. 1. Fig. 3 is a sectional view taken along line Y-Y of Fig. 1. FIG. 4(a) is a rear view of the wheelchair cushion of this creation, and FIGS. 4(b) and (c) are rear views of the installation means (straps and fasteners) of the wheelchair cushion. Fig. 5 is a front view of one side internal component of the wheelchair cushion of this creation. FIG. 6 is a perspective view of a wheelchair showing the use form 1 of the cushion for wheelchairs of this creation. FIG. 7 is a perspective view of a wheelchair showing the use form 2 of the cushion for wheelchairs of this creation.

1‧‧‧Cushion for wheelchair

2‧‧‧Internal components

21‧‧‧Inner cover

22‧‧‧Buffer material

22A‧‧‧Layer 1 of cushioning material

22B‧‧‧Layer 2 of cushioning material

3‧‧‧Outer cover

4‧‧‧ Mesh fabric member

B‧‧‧Left width of wheelchair cushion

L‧‧‧Boundary

T‧‧‧ Thickness of wheelchair cushion

Claims (3)

A cushion for wheelchair, which is formed into a slightly rectangular shape and includes: A pair of left and right internal members with a pair of left and right inner covers formed from a highly air-tight material into a bag shape, a cushioning material housed inside each of the inner covers and a pair of inner covers respectively And a valve that restricts the entry and exit of air relative to each of the inner covers; and A bag-shaped outer cover, which houses the pair of left and right internal components inside; The characteristics of this wheelchair cushion are: When the long-side direction is a left-right direction and the short-side direction is an up-down direction, the width in the left-right direction is greater than the width in the left-right direction between the left and right armrests of a wheelchair, and the structure can be centered in the left-right width direction The boundary line of the up and down direction is the reference point and is bent into a V shape in the left and right direction. The cushion for a wheelchair as described in item 1 of the patent application scope, wherein a concave portion depressed toward the central portion in the vertical direction is formed in the center portions of the upper and lower sides of the left and right width directions, and one side of the concave portion is formed The depth is set to be greater than the depth of the recess on the other side. The cushion for a wheelchair as described in item 1 or 2 of the patent application, wherein the cushioning material is composed of two layers with different hardnesses, and is arranged such that the layer with low hardness is located on the side of the user's body.

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