JPH11137609A - Seat structure for wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat structure for a wheelchair facilitating the exchange of a seat cloth and improving a sitting feeling and appearance. SOLUTION: A seat S is constituted by respectively connecting both of the right and left sides of the seat cloth 12 to right and left seat pipes 10 arranged in front and back direction. The right and left seat pipes 10 are respectively provided with slits 10a formed along an axial direction. On both of the right and left sides of the cloth 12, loop parts 14 to be inserted into the corresponding right and left pipes 10 are formed through the slits 10a. A connecting bar 18 provided with a diameter capable of preventing pulling out from the slits 10a is inserted to the inside of each loop part 14 inserted to the right and left seat pipes 10, which are connected to the right and left seat pipes 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat structure of a wheelchair, and more particularly to a seat structure in which a seat cloth constituting a seat can be easily attached and detached, and the seat cloth can be easily replaced.

[0002]

2. Description of the Related Art Conventionally, a seat structure of a wheelchair is constructed by connecting left and right sides of a seat cloth to seat pipes arranged in the front and rear directions on the left and right sides of the wheelchair using bolts. It had been.

That is, mounting holes are formed on both left and right sides of the sheet cloth, and bolts are screwed into screw holes provided in the seat pipe through the mounting holes to mount the seat.

[0004] However, in the conventional structure, five bolting portions are arranged on each of the left and right sides of the sheet cloth, so when replacing the sheet cloth, ten bolts are removed and attached. As a result, it was very time-consuming.

In addition, the head of the bolt protrudes from the upper surface on both the left and right sides of the seat, so that the appearance is poor, and furthermore, when sitting on the seat, the bolt may come into contact with the head of the bolt, and the sitting comfort is reduced. In some cases, they did.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a seat structure of a wheelchair which facilitates replacement of a seat cloth and improves sitting comfort and appearance. .

[0007]

A seat structure according to the present invention is a seat structure of a wheelchair, wherein left and right sides of a seat cloth are respectively connected to left and right seat pipes arranged in the front-rear direction. , The left and right seat pipes,
Each has a slit formed along the axial direction,
The left and right sides of the sheet cloth each include a loop portion inserted into the corresponding sheet pipe through the slit, and each of the loop portions inserted into the left and right sheet pipes is internally provided with the loop portion. A connecting rod having an outer diameter capable of preventing the slit from coming off the slit is inserted and connected to the left and right seat pipes.

Preferably, the left and right loop portions of the sheet cloth are formed over the entire length of the sheet cloth in the front-rear direction, and a connecting rod is inserted over the entire length of each loop portion.

It is preferable that the slits are respectively opened in upper portions of the left and right sheet pipes, and the left and right loop portions of the sheet cloth are formed by folding both left and right ends of the sheet cloth downward.

Further, left and right loop portions of the sheet cloth are formed by folding right and left ends of the sheet cloth, and a hook-and-loop fastener which can be engaged with each other at the folded portion and a portion overlapping the folded portion. It is desirable to arrange.

Further, the connecting rod is provided with screw holes at both ends, is inserted into the loop portion provided in the seat pipe, and a bolt is screwed into each of the screw holes. The connecting rod may be assembled to the seat pipe by bringing the heads of the bolts into contact with both end faces of the seat pipe.

[0012]

In the seat structure according to the present invention, the left and right loop portions of the sheet cloth are respectively formed through slits.
It is inserted into the left and right seat pipes, and furthermore, each loop portion is connected to the left and right seat pipes by inserting a connecting rod having an outer diameter capable of preventing the loop portion from slipping out of the slit. .

Therefore, in the replacement of the sheet cloth, the sheet cloth can be easily removed through the slit or from the end of the sheet pipe simply by pulling out the connecting rod from each loop portion.

On the other hand, in the installation of the sheet cloth, on the contrary, the left and right loop portions are arranged in the left and right sheet pipes through slits or from the ends of the sheet pipe. If a connecting rod is inserted into the section, both left and right sides of the sheet cloth can be connected to each sheet pipe.

[0015] That is, the sheet cloth can be removed in two steps of pulling out the connecting rod from the loop portion and pulling out the loop portion from the inside of the sheet pipe. It can be performed in two steps of insertion into the loop portion and insertion of the connecting rod into the loop portion, and can be performed extremely easily, so that replacement of the sheet cloth becomes easy.

The member for connecting the sheet cloth to the sheet pipe is not a bolt projecting from the upper surface of the sheet,
Since the connecting rod is disposed in the seat pipe, the seating comfort and appearance of the upper surface of the seat can be improved.

Therefore, in the seat structure of the wheelchair according to the present invention, the seat cloth can be easily replaced, and the sitting comfort and appearance can be improved.

If the left and right loop portions of the sheet fabric are formed over the entire length of the sheet fabric in the front-rear direction, and the connecting rod is inserted over the entire length of each loop portion,
The left and right sides of the sheet cloth are each prevented from falling off by the connecting rods over the entire length, so that the sheet cloth can be stretched neatly over the entire length in the front-rear direction.

Further, if the slits are respectively opened in the upper portions of the left and right seat pipes, and the left and right loop portions of the sheet cloth are formed by folding the left and right ends of the sheet cloth downward, the seat cloth can be folded when seated. Since both ends receive the weight at the time of sitting and become difficult to come off, the loops at both ends of the seat cloth do not need to be separately sewn or manufactured.

Further, the left and right loop portions of the sheet cloth are formed by folding the left and right ends of the sheet cloth, and a hook-and-loop fastener which can be engaged with each other is arranged at the folded portion and the portion overlapping the folded portion. For example, the distance between the left and right loop portions can be easily changed by changing the engagement position of the hook-and-loop fastener, and the tension of the sheet cloth can be easily adjusted, so that a desired sitting comfort can be obtained.

Further, the connecting rod is formed by providing screw holes at both ends, and is inserted into a loop portion provided in the seat pipe, and a bolt is screwed into each screw hole, and both end faces of the seat pipe are formed. If the connecting rods are assembled to the seat pipe by contacting the heads of the bolts with the bolts, the left and right connecting rods can be prevented from coming off from the seat pipe. In addition, if the bolt on the desired side of each connecting rod is removed, the connecting rod can be pulled out, which facilitates the work of replacing the sheet cloth.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

The seat S of the wheelchair C of the embodiment is shown in FIG.
As shown in FIG. 2, the left and right sheet pipes 10 (10 L
10R).

The left and right seat pipes 10L, 10R are arranged inside the left and right side pipes 2, 2 of the wheelchair C, and are connected to cross rods 4, 4, 5, 5 extending from the left and right base pipes 1, 1. Supported. The pair of cross rods 4 and 5 each have a lower end rotatably connected to the base pipe 1.1 and are pivotally supported at the center of each other to form the left and right base pipes 1 and the side pipes 2. Wheelchair C so that they are close to each other
Is arranged so that it can be folded from both left and right sides to the center side. Reference numeral 3 shown in FIGS. 2 and 6 indicates each seat pipe 10 when the wheelchair C is opened from the folded state to the use state.
L and 10R are brackets that support the lower surface side, and these brackets 3 are fixed to the side pipe 2.

The left and right seat pipes 10L, 10L
As shown in FIGS. 1 to 3, slits 10a are formed in R along the axial direction of each of the pipes 10L and 10R over the entire length on the upper side.

As shown in FIGS. 1 to 3, the sheet cloth 12 has a length in the front-rear direction equal to the length of the sheet pipe 10, and a sheet pipe 10 L on each of the left and right sides.
・ Seat pipe 10L through 10R slit 10a
-The loop part 14 inserted in 10R is arrange | positioned and comprised. Each of the loop portions 14 has a connecting rod 1 inserted inside the left and right sheet pipes 10L and 10R.
8 has been inserted. In the case of the embodiment, each loop unit 14
Is a hook-and-loop fastener 15.1 which is formed by folding the left and right end portions 12a of the sheet cloth 12 downward and stacking them, and fixed to the opposing surfaces thereof.
6 are formed by engaging each other. Hook and loop fastener 1
Reference numerals 5 and 16 denote general-purpose ones, one of which is formed by projecting a number of flexible ring-shaped loops, and the other is formed by projecting a number of hook-shaped pieces which can be locked to those loops. It is configured.

The connecting rod 18 has a length equal to the length of the seat pipe 10, and its outer diameter can be inserted into the loop part 14 arranged in the seat pipe 10, and the connecting part 18 can be inserted into the loop part 14. The loop portion 14 has such a size that the loop portion 14 does not fall out of the slit 10a when inserted into the inside. 4, screw holes 18a are formed in both end surfaces of the connecting rod 18, and bolts 19 are screwed into these screw holes 18a with a washer 20 interposed therebetween.

Then, each bolt 19 is screwed into the screw hole 18a, and the head 1 of the bolt 19 is
The right and left connecting rods 18 are assembled and fixed to the seat pipes 10L and 10R by abutting the 9a on both end surfaces of the seat pipes 10L and 10R.

The replacement of the seat cloth 12 of the wheelchair C according to the embodiment will be described. Loosening the bolts 19 at one end of each of the right and left connecting rods 18, for example, loosening the bolts 19 at the rear end. By removing the bolts 19 and washers 20 on the rear end side, the connecting rods 18 can be pulled out to the front side. After that, each loop portion 1 of the sheet cloth 12
4 is pulled out through the slit 10a, or
By pulling out the sheet pipes 10L and 10R to the respective front end sides, the sheet cloth 12 can be easily moved to the left and right sheet pipes 10L and 10R.
It can be removed from L.10R.

In mounting a new sheet cloth 12, the corresponding hook-and-loop fasteners 15 and 16 are engaged with each other,
First, the loop portions 14 are formed on both left and right sides. First, the loop portions 14 are arranged in the sheet pipes 10L and 10R through the slits 10a or from the front ends of the sheet pipes 10L and 10R. Then, the connection rods 18 that have been pulled out are inserted into the loop portions 14, and the bolts 18 are screwed into the rear ends of the connection rods 18 with the washers 20 interposed therebetween. If it is assembled to 10L / 10R, a new sheet cloth 12
Can be completed.

As described above, in the embodiment, the sheet cloth 1
2 is that the connecting rod 18 is pulled out of each loop portion 14 and the sheet pipes 10L and 10R of each loop portion 14 are removed.
In addition, the sheet cloth 12 can be attached in two steps:
The sheet cloth 12 can be easily exchanged because it can be performed in two steps of the insertion into the 10R and the insertion of the connecting rod 18 into each loop portion 14 and can be performed very easily.

Further, the sheet cloth 12 is connected to the sheet pipe 10L.
Since the member connected to 10R is not a bolt protruding from the upper surface of the seat, but a connecting rod 18 arranged to be hidden in the seat pipes 10L and 10R, the seat S
The seating comfort and appearance of the upper surface can be improved.

Therefore, in the seat structure of the embodiment,
The replacement of the sheet cloth 12 is facilitated, which is suitable for a wheelchair for rental use by a large number of people, and can improve the sitting comfort and appearance.

In the embodiment, the left and right loop portions 14 of the sheet cloth 12 are formed over the entire length of the sheet cloth 12 in the front-rear direction.
Since each of the loop portions 14 is inserted over the entire length, the left and right sides of the sheet cloth 12 are each prevented from falling off by the connecting rods 18 over the entire length.
The sheet cloth 12 can be stretched neatly over the entire length in the front-rear direction. Of course, if this point is not taken into consideration, the left and right loop portions 14 of the sheet cloth 12 may be intermittently provided on both left and right sides.

In the embodiment, the seat pipe 10L
-The 10R slit 10a is inserted into the left and right seat pipes 10
The left and right loop portions 14 of the sheet cloth 12 are formed by folding left and right ends 12a of the sheet cloth 12 downward. Therefore, even if the hook-and-loop fasteners 15 and 16 are not provided,
When the seat cloth 12 is seated, the folded end portions 12a of the seat cloth 12 receive the weight at the time of sitting and become difficult to come off. It is not necessary to use 16 or the like. Further, since the left and right end portions 12a of the sheet cloth 12 are folded downward to form the loop portions 14, the appearance does not deteriorate. Of course, if these points are not taken into consideration, for example, slits 10a may be formed in each sheet pipe 10L.
The annular structure of the loop portion 14 is maintained at all times by opening the opposite inner side surface or the lower surface side of the 10R, folding back both end portions 12a of the sheet cloth 12 downward, and suturing or using a hook-and-loop fastener. It may be configured as follows. Incidentally, even with such a configuration, the operation and effect of claim 1 can be obtained,
Further, the connection strength of the loop portion 14 to the seat pipe 10 can be improved.

Further, in the embodiment, the left and right loop portions 14 of the sheet cloth 12 are formed by folding the left and right ends of the sheet cloth 12, and the left and right loop portions 14 are associated with the folded part 12 a and the part overlapping the folded part 12 a. The hook-and-loop fasteners 15 and 16 are arranged, and if the engagement position of the hook-and-loop fasteners 15 and 16 is changed, as shown in FIG.
The distance between the left and right loop portions 14, that is, the length in the left-right direction of the seat cloth body 13 can be easily changed, and the tension of the sheet cloth 12 can be easily adjusted, so that a desired sitting comfort can be obtained. Can be.

Furthermore, in the embodiment, each connecting rod 18
Are provided with screw holes 18a at both ends, and the loop portions 14 provided in the seat pipes 10L and 10R are formed.
Into each screw hole 1 with the washer 20 interposed.
8a with a bolt 19, and seat pipe 10L-1
The bolt head 1 is attached to both end faces of the
The connecting rod 18 is assembled to the seat pipes 10L and 10R by abutting the connecting rods 9a. Therefore, the connection rod 18 can be reliably prevented from coming off from each of the seat pipes 10L and 10R by the bolt 19 fastening.
Also, if the bolt 19 on the desired side of each connecting rod 18 is removed,
Since the connecting rod 18 can be easily pulled out, the replacement work of the sheet cloth 12 can be facilitated. In the embodiment, the case where the washer 20 is used is shown. However, a bolt 19 with a washer may be used, or only the bolt 19 may be used without using the washer 20.

[Brief description of the drawings]

FIG. 1 is a partially omitted perspective view of a wheelchair showing an embodiment of the present invention.

FIG. 2 is a schematic plan view showing the seat of the embodiment.

FIG. 3 is a sectional view taken along a line III-III in FIG. 2;

FIG. 4 is a cross-sectional view of the vicinity of an end of the connecting rod according to the embodiment, which corresponds to a section IV-IV in FIG. 3;

FIG. 5 is an exploded perspective view of the vicinity of a loop portion of the sheet cloth of the embodiment.

FIG. 6 is a partial front view of the seat in a state where the tension of the sheet cloth of the embodiment is adjusted.

[Explanation of symbols]

 10 (10L / 10R): sheet pipe, 10a: slit, 12: sheet cloth, 12a: folded end, 14: loop, 15.16: hook-and-loop fastener, 18: connecting rod, 18a: screw hole, 19: bolt , 19a: head, 20: washer, S: seat, C: wheelchair.

Claims (5)

[Claims] 1. A wheelchair seat structure in which left and right sides of a sheet cloth are respectively connected to left and right seat pipes arranged in a front-rear direction, wherein the left and right seat pipes are respectively arranged in an axial direction. The left and right sides of the sheet cloth are provided with loop portions inserted into the corresponding sheet pipes through the slits, respectively, and are inserted into the left and right sheet pipes. A seat structure for a wheelchair, wherein a connection rod having an outer diameter capable of preventing the loop portion from coming off from the slit is inserted into each of the loop portions and connected to the left and right seat pipes. 2. The left and right loop portions of the sheet cloth are formed over the entire length of the sheet cloth in the front-rear direction, and the connecting rod is inserted over the entire length of each loop portion. Item 2. The wheelchair seat structure according to item 1. 3. The left and right loops of the sheet cloth are formed by folding left and right ends of the sheet cloth downward, respectively, wherein the slits are respectively opened in upper portions of the left and right sheet pipes. The wheelchair seat structure according to claim 1 or 2, wherein: 4. A surface fastener capable of forming left and right loop portions of the sheet cloth by folding right and left ends of the sheet cloth, and engaging the folded portion and a portion overlapping the folded portion with each other. The wheelchair seat structure according to claim 1, wherein: 5. The connecting rod is provided with screw holes at both ends, the connecting rod is inserted into the loop portion provided in the seat pipe, and a bolt is screwed into each of the screw holes. 5. The wheelchair according to claim 1, wherein the connecting rod is assembled to the seat pipe by contacting heads of the bolts to both end surfaces of the seat pipe. 6. Seat structure.