JPH1099377A - Wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent getting caught by the tip surface of a swing plate by positioning almost cylindrical first and second hinge pin holding parts between the tip surface of a first seat surface plate and the tip surface of a second seat surface plate in the using state of a wheelchair. SOLUTION: The base end parts of third and forth swing plates 144 and 145 are rotatably attached to the horizontal parts of first and second side frames and tip parts are rotatably connected to each other by a hinge 171. The first hinge 200 of the hinge 171 is composed of a first base part 200a and the almost columnar first hinge pin holding parts 200b formed for plural in a comb shape and a second hinge 201 is composed of a second base part 201a and the second hinge pin holding parts 201b formed for plural in the comb shape. In this case, the second hinge pin holding parts 201b of the second hinge 201 are disposed so as to be fitted between the first hinge pin holding parts 200b of the first hinge 200.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a foldable wheelchair.

[0002]

2. Description of the Related Art Next, a conventional example will be described with reference to the drawings.
12 is a perspective view of a conventional wheelchair, FIG. 13 is a perspective view showing a main part when folded in FIG. 12, and FIG. 14 is a front end of a first swing plate 42 and a front end of a second swing plate 43 in FIG. FIG. 4 is a diagram illustrating connection with a unit.

[0003] The overall configuration will be described with reference to FIG. First and second side frames 40 arranged on both sides,
Base portions of the first and second swing plates 42 and 43 are rotatably attached to vertical portions 40a and 41a provided substantially rearward of the ground at the rear of the base 41. Then, the first and second swing plates 42,
As shown in FIGS. 14A and 14B, the distal ends of the 43 are rotatably connected using a hinge 70.

[0004] Also, first and second side frames 40,
41 horizontal portions 40b, 4 provided substantially parallel to the ground
1b includes third and fourth swing plates 44, 45
Is rotatably mounted at its base end. The distal ends of the third and fourth swing plates 44 and 45 are rotatably connected using hinges 71.

[0005] First and second side frames 40, 41
The first and second casters 46, 47
And first and second steps 48 and 49 rotatably provided upward.

Further, the first and second side frames 4
At the rear upper portion of 0,41, there are provided first and second L-shaped poles 50,51 which are used when a caregiver pushes the wheelchair. These first and second poles 50,5
1 is designed to be rotatable downward when the wheelchair is folded. Also, between the poles 50 and 51, there is a seat back (sling back) made of canvas or the like.
52 are provided.

First and second side frames 40, 41
A seat cushion (sling seat surface) 53 such as a canvas is provided between the intermediate horizontal portions 40c and 41c. Next, the first and second side frames 4 of the wheels 54
The attachment to 0,41 will be described. Since the mounting structure of the wheels 54 to the first and second side frames 40 and 41 is the same on the left and right, only the first side frame 40 side will be described, and the second side frame 41 side will be omitted. A “pod” extending in a substantially horizontal direction toward the front portion and having an open front end and a lower surface is formed on the vertical portion 40 a of the side frame 40.
Bracket 55 is provided. Bracket 55
Is a top bracket that connects the first bracket part 56, the second bracket part 57 juxtaposed inside the first bracket part 56 via a space, and the upper parts of the first and second bracket parts. And a unit 58. A cutout groove 59 is formed in the lower portion of the outer first bracket portion 56 on the base end side.

An arm 60 (see FIG. 13) which can be fitted between the first and second brackets 56, 57 is rotatably attached to the distal ends of the first and second bracket portions 56, 57. . A shaft 61 that can be fitted into the cutout groove 59 is provided upright at the rotating end of the arm 60, and wheels 54 and 55 are rotatably mounted on the shaft 61.

Next, the operation of the wheelchair having the above configuration will be described. The state shown in FIG. 12 is a state at the time of use. That is, the first and second swing plates 42 and 43 and the third and fourth swing plates 44 and 45 disposed in a direction substantially orthogonal to each other are in an open state,
An arm 60 provided with a fourth shaft 61 is located between the first and second bracket portions 56 and 57 of the bracket 55, the shaft 61 is fitted into the notch groove 59, and the wheels 54 and 55 are grounded to the ground. As a result, the shaft 61 presses against the end of the notch groove 59, and the rotation of the arm 60 is prohibited.

Next, when the wheelchair is folded, as shown in FIG. 13, the wheel 54 is moved forward by lifting the wheelchair and rotating the arm 60 forward from below. Further, the first and second swing plates 4
2, 43 and third and fourth swing plates 44, 45
Are rotated respectively, and the first and second side frames 4
0, 41 are brought close to each other until they substantially contact each other. Further, the first and second poles 50 and 51 are rotated downward, and the first and second poles 50 and 51 are rotated.
Are rotated upward.

[0011]

However, in the wheelchair having the structure shown in FIGS. 12 and 13, the distal ends of the first and second swing plates 42, 43 and the third and fourth swing plates 44, 45 are connected to each other. Are connected using hinges 70 and 71.

When the wheelchair shifts from the folded state to the use state, ie, the first and second swing plates 4
In FIGS. 2 and 43, when shifting from the state of FIG. 14B to the state of FIG.
There is a danger that a finger or the like may be pinched between the second swing plate 43 and the distal end surface 43a of the second swing plate 43.

This phenomenon is the same in the third and fourth swing plates 44 and 45. The present invention has been made in view of the above problems, and an object of the present invention is to provide a wheelchair that can prevent the swing plate from being caught by the distal end surface.

[0014]

The above object is achieved by the following invention. [1] The invention according to claim 1, a pair of side frames disposed on both sides, a first seat plate having a base end rotatably attached to a substantially parallel portion of one of the side frames, A second seating plate having a base end rotatably attached to the substantially parallel portion of the other side frame and a tip end rotatably connected to a tip end of the first seating plate; A tip of the first seat plate and a tip of the second seat plate,
A first seat attached to a tip of the first seat plate;
And a substantially cylindrical first hinge pin holding portion connected to the first base portion, having a first through hole, and formed to face a tip end surface of the first seat plate. And a second base attached to the distal end of the second seat plate. The first hinge is connected to the second base and is opposed to the distal end surface of the second seat plate. A second hinge pin holding portion having a substantially cylindrical shape and provided with the second through hole facing the first through hole of the first hinge; A wheelchair characterized by being connected via a hinge comprising a first through hole and a hinge pin inserted through the second through hole.

When the wheelchair is in use, between the distal end surface of the first seat plate and the distal end surface of the second seat plate, first and second substantially cylindrical hinge pin holding portions are provided. Therefore, the first and second seat plates are prevented from being pinched by the end surfaces.

Further, the seat cushion according to the present invention is compared with a conventional wheelchair in which a seat cushion (sling seat surface) such as canvas is used as a seat surface, and the seat cushion is deformed by the weight of the occupant, thereby impairing the comfort of sitting. In the wheelchair, since the first and second seat plates are used as the seat, the seat itself is hardly deformed and the stability of the sitting position is improved.

[2] The invention according to claim 2, In the invention according to claim 1, when the first seat plate and the second seat plate rotate from a folded state to a used state, the first seat plate and the second seat plate are rotated. Seat plate, said second
A rotation restricting mechanism for restricting further rotation of the seat plate from the use state. The rotation restricting mechanism holds the positions of the first and second seat plates in the used state.

[3] The invention according to the third aspect. The wheelchair according to the second aspect, wherein the rotation regulating mechanism is provided in the hinge. The provision of the rotation restricting mechanism in the hinge simplifies the assembly of the wheelchair.

[0019]

Embodiments of the present invention will now be described with reference to the drawings. First, the overall configuration of a wheelchair according to the present embodiment will be described with reference to FIGS. 1 is a side view of a wheelchair in use according to an embodiment of the present invention, FIG. 2 is a front view of the wheelchair shown in FIG. 1, FIG. 3 is a view showing a stored state in FIG. 1, and FIG. It is a front view of the wheelchair shown.

In these figures, a vertical portion 14 is provided at the rear of the first and second side frames 140 and 141 disposed on both sides, and is provided substantially perpendicular to the ground.
0a, 141a (the vertical portion 141a is not shown)
The base ends of the second swing plates 142 and 143 are rotatably mounted. And the first and second
Of the swing plates 142 and 143 are rotatably connected using a hinge 170 described later.

Also, the first and second side frames 14
0,141 horizontal part 14 provided substantially parallel to the ground
0b and 141b (the horizontal portion 141b is not shown) have third and fourth swing plates 14 as seat plates.
4,145 base ends are rotatably mounted.
Then, the third and fourth swing plates 144, 14
5 are connected rotatably using a hinge 171 described later.

First and second side frames 140, 1
41, the first and second casters 14
6, 147 and first and second steps 148, 149 are provided.

Further, the first and second side frames 14
At the rear upper portion of the 0,141, a substantially L-shaped first and second pole 150,1 used when a caregiver pushes this wheelchair.
51 are provided. These first and second poles 1
50 and 151 can be rotated downward using the folding mechanism 180 when the wheelchair is folded. A seat back 152 made of canvas or the like is provided between the poles 50 and 51.

The wheels 154 are mounted on the first side frame 140 and the second side frame 141. Next, the configuration of the hinges 170 and 171 will be described with reference to FIGS. FIG. 5 is an exploded perspective view of a main part of the hinge, FIG. 6 is a view for explaining a first hinge and a second hinge in FIG. 5, (a) is a view showing the first hinge,
(b) is a sectional view taken along section line AA of (a), and (c) is
(D) is a cross-sectional view taken along section line BB in (c), and (e) is a bottom view in (c). FIGS. 7A and 7B are diagrams for explaining the hinge pin and the rotation restricting plate in FIG. 5, FIG. 7A is a diagram for explaining the hinge pin, and FIG.
(a) is a right side view of the figure, (c) is a view illustrating the rotation restricting plate, (d) is a right side view of the (c) view, and FIG. 8 is a view illustrating the operation of the hinge in FIG. (A) is a view for explaining the operation of the first hinge in FIG. 5, and (b) is a view explaining the second hinge in FIG.
It is a figure explaining operation | movement of the hinge of FIG.

Since the hinge 170 and the hinge 171 have the same structure, the explanation will be made using the hinge 171 and the explanation of the hinge 170 will be omitted. As shown in FIG.
71 is a first hinge 200 and a second hinge 201
, A hinge pin 202, and a rotation restricting plate 203.

The first hinge 200 is connected to the first base 20 attached to the distal end of the third swing plate 144.
0a, a first columnar part 200a, a first through-hole 200c, a substantially cylindrical third part having a plurality of interdigital teeth formed so as to face the tip part of the third swing plate 144. And one hinge pin holding portion 200b.

The second hinge 201 is connected to the second base 20 attached to the tip of the fourth swing plate 145.
1a and a second through-hole 201c which is connected to the first base 201a and faces the first through-hole 200c.
So as to face the tip of the swing plate 145,
A plurality of second hinge pin holding portions 20 formed in a comb shape
1b.

The second hinge pin holding portion 201b of the second hinge 201 provided in a comb shape fits between the first hinge pin holding portions 200b of the first hinge 200 provided in a comb shape. It is arranged to match.

The first through hole 200c and the second through hole 20
A hinge pin 202 is inserted into 1c, and the first hinge 200 and the second hinge 201 are rotatable around the hinge pin 202.

Next, a description will be given of a rotation restricting mechanism that restricts the third swing plate 144 and the fourth swing plate 145 from further rotating from the use state. In the present embodiment, the rotation restricting mechanism is provided in the hinge 171.

First hinge 200, second hinge 201
Holes 200d and 201d are formed in the first hinge pin holding portion 200b and the second hinge pin holding portion 201b.

A groove 202a is formed in the hinge pin 202, and a rotation restricting plate 203 is fitted in the groove 202a. The rotation restricting plate 203 includes the hinge pin 20.
The base portion 203a fitted into the second groove 202a and the first hinge 200, the first hinge pin holding portion 200b of the second hinge 201, and projecting into holes 200d, 201d formed in the second hinge pin holding portion 201b. Projecting portion 203b
It consists of

Therefore, as shown in FIG. 8A, the first hinge 200 is positioned such that one wall surface 200e of the hole 200d abuts on the protruding portion 203b of the rotation restricting plate 203.
From the position indicated by the solid line, the other wall surface 200f is rotatable in a range (position indicated by a two-dot chain line) where the other wall surface 200f comes into contact with the rotation regulating plate 203 projecting portion 203b.

Similarly, as shown in FIG. 8B, the second hinge 201 is located at a position where one wall surface 201e of the hole 201d is in contact with the protruding portion 203b of the rotation regulating plate 203.
From the position indicated by the solid line, the other wall surface 201f is rotatable in a range where the other wall 201f contacts the protruding portion 203b of the rotation regulating plate 203 (the position indicated by the two-dot chain line).

In FIG. 8, the wall surface 200e of the first hinge 200 and the wall surface 201e of the second hinge 201 are in contact with the protruding portion 203b of the rotation restricting plate 203 to restrict further rotation. The state shown by is the use state of the wheelchair.

Next, the folding mechanism 180 will be described.
FIG. 9 is a view for explaining the attachment of the folding mechanism 180, FIG. 10 is a view for explaining the configuration of the folding mechanism, FIG. 9 (a) is a side view, FIG. 9 (b) is a front view in FIG. The figure is a cross-sectional view of the lock part in the figure (b).

Reference numeral 300 denotes a hinge mail provided on the first side frame 140 and the second side frame 141, and 301 denotes a first pole 150 and a second pole 151.
It is a hinge female provided on the side.

On the circumferential surface of the cylindrical portion 300a of the hinge mail 300, two lock grooves 300b and 300c are formed along two different generatrixes, respectively.
A through hole 300d is formed at the center of Oa.
The lock groove 300b and the lock groove 300c are formed on the same circumference in the circumferential direction.

The hinge female 301 includes a first facing portion 301a facing one end face of the cylindrical portion 300a of the hinge mail 300, and a cylindrical portion 300 of the hinge mail 300.
It is composed of a second opposing portion 301b opposing the other end face of a, and a bridging portion 301c bridging the first and second opposing portions 301a, 301b.

First and second opposed portions 301a, 301b
Are provided with holes 301d and 301e. A bolt 302 is inserted through the hole 301d of the hinge female 301, the through hole 300d of the hinge female 300, and the hole 301e of the hinge female 301, and a nut 303 screwed to the bolt 302 is used to rotate the bolt 302 as a rotation axis. The mail 300 and the hinge female 301 are rotatable.

Reference numeral 305 denotes the cylindrical portion 30 of the hinge mail 300.
0a, the hinge female 30
Hole 30 of first and second opposed portions 301a, 301b
This is a lock portion that fits into 1f and 301g.

In the lock portion 305, a first lid 311 having a hole 311a formed in the center is fixed to one end surface of a cylindrical cylinder 310 having both open end surfaces. The other end of the cylinder 310 has a hole 3 in the center.
A second lid 312 formed with 12a is provided, and further,
On the second lid 312, a third lid 313 having a hole 313a at the center is provided. And shaft 3
14 are the holes 311a, 312 of the lids 311, 312, 313
a, 313a, and an E-ring 315 for retaining is attached to one end of the shaft 314. Further, a push button 316 is provided at the other end of the shaft 314.

The cylindrical surface of the cylinder 310 has two lock grooves 30 provided along two different generatrixes on the circumferential surface of the cylindrical portion 300a of the hinge mail 300, respectively.
Two holes 310a that can face each other are formed at 0b and 300c. The hole 310a is tapered so that the opening diameter on the outer cylinder surface is smaller than the opening diameter on the inner cylinder surface. These two tapered holes 310a are provided with the lock grooves 3 of the cylindrical portion 300a of the hinge mail 300.
Steel balls 320 that can be engaged with 00b and 300c are provided. When the steel ball 320 is engaged with the lock groove 300b, the first pole 150 and the second pole 151 are connected to the first side frame 140 and the second side frame 14 respectively.
1 standing, that is, in use,
When the steel ball 320 is engaged with the lock groove 300c, the first pawl 150 and the second pawl 151 are in a state of falling with respect to the first side frame 140 and the second side frame 141, that is, In storage state.

On the other hand, the shaft 314 is formed with two large-diameter portions 314a to which the steel ball 320 can be pressed.
The position of the large-diameter portion 314a is such that the E-ring 315
The large diameter portion 314 a is set at a position where the large diameter portion 314 a presses against the steel ball 320 in a state where the large diameter portion 314 a contacts the steel ball 320. Furthermore, the large diameter portion 31
4a and the lid 312, an E-ring 315 is attached to the lid 313.
A spring 321 that presses against the spring 321 is provided.

Next, the operation of the wheelchair having the above configuration will be described. The state shown in FIGS. 1 and 2 is a state at the time of use.
That is, the first and second swing plates 42, 43
And the third and fourth swing plates 144 and 145 arranged in directions substantially orthogonal to each other are in an open state.

Next, in order to fold the wheelchair, as shown in FIGS.
2, 143 and the third and fourth swing plates 144, 145 disposed in a direction substantially orthogonal to each other.

Further, in the folding mechanism 180, when the push button 316 is pressed against the spring 321 against the urging force, the shaft 314 moves, and the pressing of the large-diameter portion 314a against the steel ball 320 is released. 301
(The first and second poles 150, 151) are connected to the hinge mail 300 (the first and second side frames 140, 14).
It becomes rotatable with respect to 1). Then, the first and second poles 150 and 151 are tilted toward the storage position. When the player starts to depress, the operation force on the push button 316 is released. Then, the steel ball 320 is engaged with the lock groove 300c,
Further rotation of the first and second poles 150 and 151 is prohibited, and the first and second poles 150 and 151 are
Locked in storage position.

Conversely, to shift the wheelchair in the stowed state to the use state, the first and second swing plates 14 are used.
2, 143 and the third and fourth swing plates 144, 145 arranged in a direction substantially orthogonal to each other are opened, and the state shown in FIGS.

In the folding mechanism 180, when the push button 316 is pressed against the spring 321 against the urging force, the shaft 314 moves, and the pressing of the large-diameter portion 314a against the steel ball 320 is released. 301
(The first and second poles 150, 151) are connected to the hinge mail 300 (the first and second side frames 140, 14).
It becomes rotatable with respect to 1). Then, the first and second poles 150 and 151 are raised in the direction of the use position.
When the user starts waking up, the operation force on the push button 316 is released. Then, the steel ball 320 engages with the lock groove 300b, further rotation of the first and second poles 150, 151 is prohibited, and the first and second poles 150, 151 are prevented.
Is locked in the use state position.

According to the above configuration, the substantially cylindrical first and second hinge pins of the hinge 170 are provided between the distal end surface of the first swing plate 142 and the distal end surface of the second swing plate 143. Between the distal end surface of the third swing plate 144 and the distal end surface of the fourth swing plate 145, the holding portion has substantially cylindrical first and second hinge pin holding portions 200b and 201b of the hinge 171. Since each of them is provided, it is possible to prevent the swing plate from being caught by the tip surface.

In addition, a seat cushion (sling seat surface) such as canvas is used as a seat surface, and the seat cushion is deformed by the weight of the occupant, thereby deteriorating the comfort of the sitting position. In the example wheelchair,
Third and fourth swing plates 144, 1 as seating surfaces
The use of 45 improves the stability of the sitting position with little deformation of the seating surface itself.

Further, by providing a mechanism for restricting the rotation of the hinge 171, the position of the third and fourth swing plates 144 and 145 in use can be maintained.

Further, the rotation regulating mechanism is provided with a hinge 17.
0,171 facilitates the assembly of the wheelchair. Furthermore, in the present embodiment, the hinge 170 connecting the distal end portions of the first swing plate 142 and the second swing plate 143 has the same structure as the hinge 171, so that the hinge 170 is sandwiched between the swing plate distal end surfaces. This can be prevented.

The present invention is not limited to the above embodiment. For example, the third swing plate 14
The cross-sectional shape of the hinge connecting the front end of the fourth swing plate and the front end of the fourth swing plate 145 may be a cross-sectional shape as shown in FIG. 11A and 11B are diagrams illustrating another embodiment of the hinge, in which FIG. 11A is a cross-sectional view of the second hinge, FIG. 11B is a cross-sectional view of the first hinge, and FIG. It is sectional drawing.

In the figure, 400 is a first hinge, 40
1 is a second hinge. The first hinge 400 is
A first base 400a attached to the tip of the swing plate 144, and a first base 400a connected to the first base 400a;
The first hinge pin holding portion 400b has a first through hole 400c, and is formed in a plurality of comb-like shapes so as to face the tip of the third swing plate 144.

The second hinge 401 is connected to the second base 40 attached to the tip of the fourth swing plate 145.
1a and a second through hole 401c which is provided continuously to the first base 401a and faces the first through hole 400c.
So as to face the tip of the swing plate 145,
A plurality of second hinge pin holding portions 40 formed in a comb shape
1b.

The cross section of the hinge pin 402 is
And a protruding portion 402b. The cross-sectional shape of the second through hole 401c of the second hinge 401 is the same as that of the hinge pin 402.
Is set to the same shape as the cross-sectional shape of the second hinge 401.
And the hinge pin 402 rotate integrally.

The first hinge 400 is provided within a range in which the upright wall surfaces 400d and 400e of the first through hole 400c abut on the protrusion 402b of the hinge pin 402.
2, and a rotation restricting mechanism is configured.

Further, in the above-described embodiment, the rotation restricting mechanism is provided in the hinge, but may be provided in a portion other than the hinge.

[0060]

As described above, according to the present invention, the following effects can be obtained. According to the first aspect of the present invention, the first base portion attached to the front end portion of the first seat plate, the front end portion of the first seat surface plate and the front end portion of the second seat surface plate, The first base is connected to the first base.
A first hinge having a substantially cylindrical first hinge pin holding portion formed so as to face a distal end surface of the first seat plate, and the second seat plate. A second base portion attached to the front end portion of the first hinge plate, the second base portion being connected to the second base portion, formed so as to face a front end surface of the second seat plate, and a first base of the first hinge. A second hinge comprising a substantially cylindrical second hinge pin holding portion provided with the second through hole facing the through hole, and a hinge pin inserted through the first through hole and the second through hole; By connecting via the hinge consisting of
And it can prevent being pinched by the front-end | tip surface of a 2nd seat plate.

Further, by using the first and second seat plates as the seat surface, a seat cushion (sling seat surface) such as a canvas is used, and the seat cushion is deformed according to the weight of the occupant, and Compared to the conventional wheelchair which has impaired comfort, the wheelchair of the present invention uses the first and second seating plates as the seating surface, so that the seating surface itself is hardly deformed and the stability of the seating position is reduced. Get better.

According to the second aspect of the present invention, when the first seat plate and the second seat plate rotate from the folded state to the use state, the first seat plate and the second seat plate are rotated. By providing a rotation restricting mechanism for restricting further rotation of the face plate from the use state, the first and second rotation plates are provided.
Position of the seat plate in use can be maintained.

According to the third aspect of the present invention, the provision of the rotation restricting mechanism in the hinge simplifies the assembly of the wheelchair.

[Brief description of the drawings]

FIG. 1 is a side view of a wheelchair in use according to an embodiment of the present invention.

FIG. 2 is a front view of the wheelchair shown in FIG.

FIG. 3 is a diagram showing a storage state in FIG. 1;

FIG. 4 is a front view of the wheelchair shown in FIG.

FIG. 5 is an exploded perspective view of a main part of the hinge.

6A and 6B are diagrams illustrating a first hinge and a second hinge in FIG. 5, wherein FIG. 6A is a diagram showing the first hinge, and FIG.
(a) is a cross-sectional view taken along section line AA in FIG. (c) is a view showing the second hinge, (d) is a cross-sectional view taken along section line BB in (c), (e) is (c) It is a bottom view in a figure.

FIGS. 7A and 7B are diagrams illustrating a hinge pin and a rotation restricting plate in FIG. 5; FIG. 7A illustrates a hinge pin; FIG. 7B illustrates a right side view of FIG. 5A; FIG. 3D is a diagram illustrating the plate, and FIG. 4D is a right side view of FIG.

FIGS. 8A and 8B are diagrams for explaining the operation of the hinge in FIG. 1, FIG. 8A is a diagram for explaining the operation of the first hinge in FIG. 5, and FIG. 8B is a diagram for explaining the second hinge in FIG. It is a figure explaining operation of.

FIG. 9 is a diagram illustrating attachment of the folding mechanism 180.

10A and 10B are diagrams illustrating the configuration of the folding mechanism, wherein FIG. 10A is a side view, FIG. 10B is a front view in FIG. 10A, and FIG. 10C is a cross-sectional view of the lock unit in FIG. It is.

FIG. 11 is a view for explaining another embodiment of the hinge;
(a) is a sectional view of the first hinge, (b) is a sectional view of the second hinge, and (c) is a sectional view of the hinge pin.

FIG. 12 is a perspective view of a conventional wheelchair.

FIG. 13 is a perspective view showing a main part at the time of folding in FIG.

FIG. 14 shows a first swing plate 42 in FIG.
FIG. 9 is a diagram for explaining connection between the tip of the second swing plate 43 and the tip of the second swing plate 43.

[Explanation of symbols]

 140 First side frame 141 Second side frame 144 Third swing plate (first seat plate) 145 Fourth swing plate (second seat plate) 171 Hinge 200 First hinge 200a First Base 200b first hinge pin holding section 201 second hinge 201a second base 201b second hinge pin holding section 202 hinge pin 203 rotation restricting plate

Claims (3)

[Claims] 1. A pair of side frames disposed on both sides, a first seat plate having a base end rotatably attached to a substantially parallel portion of one side frame, and the other side frame. And a second seating plate having a base end rotatably attached to a substantially parallel portion of the first seating plate and a front end rotatably connected to a front end of the first seating plate. A tip attached to the tip of the first seat plate, the tip of the face plate and the tip of the second seat plate being attached to the first seat plate.
And a substantially cylindrical first hinge pin holding portion connected to the first base portion, having a first through hole, and formed to face a tip end surface of the first seat plate. And a second base attached to the distal end of the second seat plate. The first hinge is connected to the second base and is opposed to the distal end surface of the second seat plate. A second hinge pin holding portion having a substantially cylindrical shape and provided with the second through hole facing the first through hole of the first hinge; A wheelchair characterized by being connected via a hinge comprising a first through hole and a hinge pin inserted through the second through hole. 2. When the first seat plate and the second seat plate rotate from a folded state to a use state, the first seat plate and the second seat plate move from the use state. 2. The wheelchair according to claim 1, further comprising a rotation restricting mechanism for restricting further rotation. 3. The wheelchair according to claim 2, wherein the rotation restricting mechanism is provided in the hinge.