JP2000217868A - Structure for mounting wheelchair seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wheelchair seat mounting structure enabling a seat to be easily and rapidly mounted on a seat pipe and capable of assuring the stability of a wheelchair. SOLUTION: First supporting members 5 each having a cylindrical part 5a are projected from the outer periphery of the seat pipe 14 of a wheelchair main body. A rod-shaped first seat mounting member 4 is passed through each first supporting member 5 and both side edges of a seat S1 so as to mount the seat S1 on the seat pipe 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a wheelchair seat mounting structure.

[0002]

2. Description of the Related Art Conventionally, a seat for a wheelchair is
The two side edges are arranged along the seat pipe of the wheelchair body, and the seating seat is penetrated, and the tapping screw is screwed into the seat pipe to be attached to the seat pipe. Further, the backrest seat of the wheelchair is attached to the back pipe of the wheelchair main body using tapping screws in the same manner as the seating seat. However, in each case, there is a problem that a large number of tapping screws are required, and a large number of man-hours are required for the mounting work. Therefore, as shown in FIG.
The seat 93 is attached to the seat pipe 91 by inserting a rod-shaped sheet attaching member 92 through the first member 1 and wrapping both side edges of the seat 93 around both sides of the seat attaching member 92 exposed from the seat pipe 91. Has also been done.

[0003]

In this case, however, it is necessary to expose the seat mounting members 92 from both sides of the seat pipe 91 in order to wind both side edges of the seat 93 around the seat mounting members 92. Accordingly, the total length of the seat pipe 91 needs to be shortened.
For this reason, it is necessary to attach a pair of crossbars 94 and 95 for connecting the pair of left and right side frames to the seat pipe 91 in a state where they are close to each other. There was a problem of poor sex. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a wheelchair seat mounting structure capable of easily and quickly mounting a seating seat on a seat pipe and ensuring stability of the wheelchair. The purpose is to provide. Another object of the present invention is to provide a wheelchair seat mounting structure in which a backrest seat can be easily and quickly mounted on a back pipe.

[0004]

In order to achieve the above object, a wheelchair seat mounting structure according to the present invention is characterized in that a rod-shaped seat mounting member is attached to a support member projecting from the outer periphery of a seat pipe of a wheelchair body. Removably attached along the pipe, both sides of the seat,
The seat mounting member is locked (claim 1). According to this seat attachment structure, the seat can be attached to the seat pipe only by engaging the seat with the seat attachment member. Further, since the seat attachment member is attached to the support member protruding from the outer periphery of the seat pipe, the seat can be locked to the seat attachment member without shortening the overall length of the seat pipe. For this reason, the pair of left and right side frames can be attached to the seat pipe in a state where the pair of crossbars are sufficiently separated from each other.

In the seat mounting structure, the seat mounting member is removably inserted into both side edges of the seat, and the support member includes a tubular portion through which the seat mounting member is removably inserted. The seat pipe or the tubular portion may be provided with a retaining portion that engages with a sheet attaching member through which the tubular portion is inserted to prevent removal of the sheet attaching member. 2). In this case, the seat can be attached to the seat pipe only by inserting the seat attaching member through both side edges of the seating seat and the tubular portion of the support member. In addition, the sheet retaining member can be prevented from being pulled out by the retaining portion, and at the same time, the sheet mounting member can be positioned in the longitudinal direction.

According to a second aspect of the present invention, in the seat mounting structure for a wheelchair, the seat mounting member includes an engaging portion projecting in a direction substantially perpendicular to a longitudinal direction of the seat mounting member, and the retaining portion is formed in a seat pipe. The hole may be a hole into which the engaging portion can be introduced (claim 3). In this case,
Since the retaining portion is a hole formed in the sheet pipe, it is not necessary to constitute the retaining portion with a single member.

In the seat mounting structure for a wheelchair according to the present invention, the retaining portion may be a stopper detachably attached to the seat attaching member and locked to the tubular portion. Item 4), in this case, the retaining portion can be configured without performing special processing on the sheet pipe.

Further, the seat mounting structure of the present invention comprises:
A rod-shaped seat attachment member is removably attached to a support member protruding from the outer periphery of the back pipe of the wheelchair body along the back pipe, and both side edges of the backrest seat are connected to the seat attachment member. It is characterized in that it is stopped. According to this seat attachment structure, the backrest seat can be attached to the back pipe via the seat attachment member and the support member.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 2 is a side view showing a wheelchair to which the present invention is applied. The wheelchair is of an electric type in which a driving force corresponding to a pressing force applied to the wheelchair body 1 by a caregiver is applied to a pair of left and right driving wheels 2 as auxiliary power, and the driving wheels 2 are rotationally driven. .

The pair of drive wheels 2 are mounted on both sides of the rear of the wheelchair main body 1 via drive unit units U provided corresponding to the respective drive wheels. In addition, caster wheels 3 are provided on both sides of the front portion of the wheelchair body 1. The wheelchair main body 1 includes a pair of left and right side frames 10 formed by metal pipes. The side frame 10 includes a back pipe 11 erected at a rear portion of the wheelchair body 1, an arm pipe 12 extending forward from the back pipe 11, a front pipe 13 extending downward from a front end of the arm pipe 12, and a back pipe. A seat pipe 14 disposed between the pipe 11 and the front pipe 13, a footrest pipe 15 extending obliquely downward from an intermediate portion of the front pipe 13, and disposed below the seat pipe 14 so as to be substantially parallel to the seat pipe 14. It comprises a base pipe 16 extending and a caster bracket 17 extending downward from near the lower end of the front pipe 13.

A pair of left and right seat pipes 14 are provided independently of the back pipe 11 and the front pipe 13, and the outer periphery thereof has a central portion rotatably supported by an X.
The upper end of the letter-shaped crossbar 18 is welded. A pair of crossbars 18 are provided so as to be sufficiently separated from each other in the front-rear direction of the wheelchair main body 1, and lower ends of the crossbars 18 are rotatably connected to a pair of left and right base pipes 16. That is, the wheelchair body 1
The pair of left and right side frames 10 are connected to each other by a pair of X-shaped crossbars 18 so as to be foldable (see FIG. 4). The crossbar 18 on the rear side is supported by the back pipe 11 via the connecting pipe 19.

A seat S1 (see FIG. 1) for an occupant to sit on the left and right seat pipes 14 and a backrest seat S2 on the left and right back pipes 11 (see FIG. 3).
Each is stretched. In addition, the leg pipe 15
A foot plate F for placing passenger feet
However, an armrest (elbow support) AL is attached to the arm pipe 12. Further, a parking brake P is attached to the back pipe 11, and the drive unit U is erected between a lower end of the back pipe 11 and the base pipe 16. A grip G held by a caregiver is provided on the upper portion of the back pipe 11, and a pressing force applied to the grip G is detected by a detecting unit (not shown), and a driving force corresponding to the pressing force is driven. The unit U is configured to apply the auxiliary power to the pair of drive wheels 2.

Referring to FIG. 1, a first support member 5 for detachably supporting a first sheet mounting member 4 described later protrudes from an upper portion of the outer periphery of each of a pair of left and right sheet pipes 14. Have been. This first support member 5
Are provided at predetermined intervals in the longitudinal direction of the seat pipe 14. Each of the first support members 5 is a short one, and a cylindrical portion 5a through which the first sheet mounting member 4 is inserted is provided at an upper portion thereof, and a lower portion is welded to a seat pipe 14. (See FIG. 5).

The first seat mounting member 4 has a rod shape, and its entire length is set to be substantially the same as the length of the seat pipe 14. This first sheet mounting member 4
An engagement portion 4a is formed at the front end of the first projection 2a in a direction substantially perpendicular to the longitudinal direction. The engaging portion 4a is formed by bending a bar constituting the first sheet attaching member 4 downward in the drawing. The first sheet mounting member 4 is removably inserted into the cylindrical portion 5a of the first support member 5 from the end opposite to the engaging portion 4a.

At the front end of the seat pipe 14, a hole 6 is formed as a retaining portion.
The engaging portion 4a of the sheet mounting member 4 is introduced. As a result, the first sheet mounting member 4 inserted into the first support member 5 is prevented from being pulled out, and the first sheet mounting member 4 is positioned in the longitudinal direction. Since the retaining portion is constituted by the hole 6 formed in the sheet pipe 14 in this manner, the retaining portion does not need to be constituted by a single member.
The number of parts can be reduced.

The seat S1 is made of cloth, and has cavities A at both side edges (see FIG. 5). The first seat mounting member 4 is inserted through the cavities A. The both side edges are locked to the first sheet mounting member 4. Notches B for introducing the first support members 5 are formed on both side edges of the seat S1 (see FIG. 1A). A long pocket P1 is formed on the lower surface of the seat S1, and a control box for controlling driving of the wheelchair is accommodated in the pocket P1 (see FIG. 1B).

As described above, in the wheelchair, the first seat mounting member 4 for locking the seat S1 is provided.
Is attached to the first support member 5 protruding from the outer periphery of the seat pipe 14, so that the seat S1 is locked to the first seat attachment member 4 without shortening the overall length of the seat pipe 14. be able to. Therefore, the pair of crossbars 18 can be attached to the seat pipe 14 in a state where the crossbars 18 are sufficiently separated from each other in the front-rear direction. Therefore, the stability of the wheelchair can be sufficiently ensured. Further, only by inserting the first seat mounting member 4 through the seat S1 and the first support member 5,
Since the seat S1 can be attached to the seat pipe 14, the attaching operation can be performed extremely easily and quickly. Moreover, the engaging portion 4 a of the first seat mounting member 4 is
To prevent the first seat mounting member 4 from coming off, and to position the first seat mounting member 4 in the longitudinal direction. Can be securely attached.

Referring to FIG. 6, a second support member 9 for detachably supporting second sheet mounting member 8 is provided at an intermediate portion of each of the pair of left and right back pipes 11.
Are protruding. The second support member 9 is provided inside the back pipe 11 so as to be vertically separated by a predetermined distance. Each second support member 9 is short,
One side is provided with a tubular portion 9a through which the second sheet mounting member 8 is inserted, and the other side is welded to the back pipe 11 (see FIG. 7).

The second sheet mounting member 8 includes a first
And an engaging portion 8a projecting in a direction substantially perpendicular to the longitudinal direction is formed at the upper end thereof. This engaging portion 8a is
Is formed by bending a bar material constituting the sheet mounting member 8 of the first embodiment to the side. The second sheet mounting member 8 is removably inserted into the cylindrical portion 9a of the second support member 9 from the end opposite to the engaging portion 8a. The portion 8a is engaged with the lower edge of the notch D formed on the side edge of the backrest sheet S2 (see FIGS. 8 and 9).

The back seat S2 is made of cloth,
A hollow portion C is formed from a middle portion to a lower end portion of the both side edges, and the second sheet mounting member 8 is inserted through the hollow portion C so that the two side edges become the second sheet mounting member. 8 (see FIG. 7).
Notches K for introducing the second support member 9 are formed on both side edges of the backrest sheet S2. Further, a laterally extending ear portion M is formed on an upper portion of the backrest sheet S2, and the ear portion M is formed on the back pipe 11.
And is connected to the side edge of the backrest sheet S2 via the hook-and-loop fastener E (see FIG. 6). Further, a pocket P2 for accommodating the battery H is provided on the back surface of the backrest sheet S2. As described above, in the wheelchair, the back seat S2 can be attached and detached only by inserting and removing the second seat mounting member 8 from the second support member 9 and the back seat S2. For this reason, attachment and detachment can be performed easily and quickly.

FIG. 10 is a side view showing another embodiment. This embodiment is different from the embodiment shown in FIG. 1 in that the retaining portion of the first sheet attaching member 4 is replaced by the hole 6 formed in the sheet pipe 14 and the first sheet attaching member 4 4 is constituted by a stopper 21 which is detachably attached to the stopper 4. This stopper 2
Reference numeral 1 denotes a C-shaped retaining ring 21a for introducing and sandwiching the first sheet mounting member 4 at the tip of a rectangular thin metal plate (see FIG. 11). On the other hand, the first sheet mounting member 4 is formed with narrow circumferential grooves 4b at both sides of the pair of first support members 5, and the stopper ring of the stopper 21 is formed in each circumferential groove 4b. Part 21a
Is inserted resiliently. According to this embodiment,
The stopper 21 is locked to the pair of first support members 5,
It is possible to prevent the first sheet mounting member 4 from being pulled out. Therefore, the retaining portion can be configured without forming the engaging portion 4a on the seat pipe 14. The stopper 21 may be formed of a commercially available C-shaped snap ring (snap ring).

The seat mounting structure for a wheelchair according to the present invention is not limited to the above embodiment.
A fastening bolt as a retaining portion is screwed into the first support member 5 and the first sheet attachment member 4 is tightened by the bolt, so that the first sheet attachment member 4 is pulled out of the first support member 5. Various design changes can be made, for example, to prevent the above. Further, the seat mounting structure of the present invention can be applied to various wheelchairs other than the folding electric wheelchair.

[0023]

As described above, according to the seat mounting structure of the wheelchair according to the first aspect, the seat can be mounted on the seat pipe only by engaging the seat with the seat mounting member. It can be easily and quickly attached to the pipe. Moreover,
Since the seat attachment member is attached to the support member protruding from the outer periphery of the seat pipe, the seat can be locked to the seat attachment member without shortening the overall length of the seat pipe. For this reason, a pair of crossbars for connecting the pair of left and right side frames can be attached to the seat pipe in a state where the crossbars are sufficiently separated from each other, and the stability of the wheelchair can be reliably secured.

According to the seat mounting structure of the wheelchair according to the second aspect, the seat mounting member can be mounted on the seat pipe by inserting the seat mounting member through both side edges of the seat seat and the cylindrical portion of the support member. The seat can be mounted very easily and quickly. In addition, since the removal of the seat attachment member is prevented by the retaining portion, the seat attachment member can be positioned in the longitudinal direction at the same time, so that the seating seat can be securely attached to the seat pipe.

According to the seat mounting structure of the wheelchair according to the third aspect, since the retaining portion is a hole formed in the seat pipe, the retaining portion does not need to be constituted by a single member, and the number of parts is reduced. can do.

According to the seat mounting structure of the wheelchair according to the fourth aspect, since the retaining portion is detachably mounted on the seat mounting member and is a stopper locked to the cylindrical portion, it is specially provided for the seat pipe. The retaining portion can be configured without performing any complicated processing.

According to the seat mounting structure of the wheelchair according to the fifth aspect, since the backrest seat can be mounted on the back pipe via the seat mounting member and the support member, the seat can be mounted easily and quickly. .

[Brief description of the drawings]

FIG. 1 is a view showing one embodiment of a seat mounting structure of the present invention, wherein a is a plan view of a main part and b is a side view of a main part.

FIG. 2 is a side view showing a wheelchair.

FIG. 3 is a rear view showing a wheelchair.

FIG. 4 is a rear view showing a state in which the wheelchair is folded.

FIG. 5 is a front view of an essential part showing a mounting structure of a seating seat.

FIG. 6 is a main part rear view showing a mounting structure of the backrest seat.

FIG. 7 is a sectional view taken along line VII-VII of FIG. 6;

FIG. 8 is a cross-sectional view of a main part along line VIII-VIII in FIG. 6;

FIG. 9 is a side view showing an engagement portion.

FIG. 10 is a side view of a main part showing another embodiment.

11 is a cross-sectional view of a main part along line XI-XI in FIG. 10;

FIG. 12 is a view showing a conventional example, where a is a plan view of a main part and b
FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wheelchair main body 4 1st seat attachment member 4a Engaging part 5 Supporting member 5a Cylindrical part 6 Hole (retaining part) 11 Back pipe 14 Seat pipe 21 Stopper (retaining part) S1 Seating seat S2 Backrest seat

Claims (5)

[Claims] 1. A bar-shaped seat attachment member is detachably attached to a support member protruding from an outer periphery of a seat pipe of a wheelchair body in a state along the seat pipe, and both side edges of a seat are attached to the seat. A seat mounting structure for a wheelchair, wherein the seat mounting structure is locked to a mounting member. 2. The seat pipe according to claim 2, wherein the seat mounting member is detachably inserted into both side edges of the seat, and the support member includes a tubular portion through which the seat mounting member is detachably inserted. 2. The seat mounting structure for a wheelchair according to claim 1, wherein the shape portion is provided with a retaining portion which engages with a sheet mounting member through which the cylindrical portion is inserted to prevent the seat mounting member from being pulled out. 3. The seat mounting member includes an engaging portion protruding in a direction substantially perpendicular to a longitudinal direction of the seat mounting member, wherein the retaining portion is formed in a seat pipe and is a hole through which the engaging portion can be introduced. The wheelchair seat mounting structure according to claim 2. 4. The seat mounting structure for a wheelchair according to claim 2, wherein said retaining portion is a stopper detachably attached to said seat mounting member and locked by said tubular portion. 5. A bar-shaped seat attachment member is removably attached to a support member protruding from an outer periphery of a back pipe of a wheelchair main body along the back pipe, and both side edges of a backrest seat are attached to the seat. A seat mounting structure for a wheelchair, wherein the seat mounting structure is locked to a mounting member.