JP4462971B2 - Folding wheelchair - Google Patents

Description

  The present invention relates to a folding wheelchair characterized by a brake.

  In conventional wheelchairs and foldable wheelchairs, when the passenger operates the brakes, if the brake lock operation is performed with the right hand, the brake on the right wheel locks only the right wheel, and if the brake lock operation is performed with the left hand, the left wheel The brake was only to lock the left wheel.

  Therefore, for a passenger who cannot be used because one arm is paralyzed, only one wheel brake can be used, and a stable stop of the wheelchair cannot be obtained. There were drawbacks such as being easy to fall into a dangerous state such as, and moving the body, the wheelchair moved and poor usability.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above-described drawbacks of the prior art, and it is an object of the present invention to provide a foldable wheelchair that allows a person who can move only one arm to easily apply a brake to the left and right wheels. Yes.

The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.
However, the drawings are for explanation only and do not limit the technical scope of the present invention.

In order to achieve the above object, the present invention has the following configuration.
<Invention of Claim 1>
A wheelchair body (8) comprising a skeleton (2);
A grip part (9) operated by the right hand of a person on a wheelchair provided on the right side of the wheelchair body (8), a handle (10) extending from the grip part (9), and movement of the handle (10) Right- hand brake operation comprising a rotation shaft (12) on the side operated by the right hand that is rotated by a shaft, and a bearing portion (13) fixed to the frame portion (2 ) and pivotally supporting the rotation shaft (12). Part (14);
A right brake (15) that presses against the right wheel (6) and locks the right wheel (6) by operating the right brake operation section (14);
By the movement of the grip (17) operated by the left hand of the person on the wheelchair provided on the left side of the wheelchair body (8), the handle (18) extending from the grip (17), and the movement of the handle (18) Left- hand brake operation unit comprising a rotation shaft (20) on the side operated by the rotating left hand and a bearing portion (21) fixed to the frame portion (2) and supporting the rotation shaft (20). (22)
A left brake (23) that presses against the left wheel (7) and locks the left wheel (7) by operating the left brake operation section (22);
A connecting shaft (25) connected to the rotating shaft (12) projecting inward of the bearing portion (13) by the first connecting portion so that the outward end side can freely rotate, and protruded to the inside of the bearing portion 21 The connecting shaft (26), which is connected to the rotating shaft (20) by the second connecting portion so that the outward end side can freely rotate, and the inward end sides of the connecting shaft (25) and the connecting shaft (26) are rotated. In the folding of the wheelchair, which is movably connected at the third connecting portion and the right wheel (6) and the left wheel (7) are brought close to each other, the connecting shaft (25) and the connecting shaft (26) are connected to the first connecting portion. A left and right brake connecting portion (27) folded and folded at the second connecting portion and the third connecting portion ,
When the right wheel (6) is locked by the right brake (15) by the operation of the right brake operation section (14), the left brake (23) also operates integrally with the right brake (15) by the left and right brake connecting section (27). When the left wheel (7) is locked and the left wheel (7) is locked by the left brake (23) by the operation of the left brake operation section (22), the right brake (15) is also moved by the left and right brake connecting section (27). A foldable wheelchair characterized by operating integrally with the left brake (23) to lock the right wheel (6).

  As is clear from the above description, the present invention has the following effects.

  (1) Since the left and right brakes are connected via the left and right brake connecting parts, operating either the left or right brake operating part with either left or right arm causes the left and right brakes to operate as a unit. It is possible to obtain an effect of realizing a wheelchair that can be locked by applying a brake.

(2) In a foldable wheelchair, the left and right brakes are connected via the left and right brake connecting parts, so that the left and right brakes are integrated when the left or right arm is operated with either the left or right arm. The left and right brake connecting part can be folded and bent so that it does not interfere with the folding of the wheelchair body. It is possible to obtain the effect that the folding can be performed without any problem.
This makes it possible to lock the left and right wheels even for passengers who cannot be used because one arm is paralyzed, etc., and it is possible to obtain a stable stop of the wheelchair. Realize that the wheelchair does not move even when the body is moved and that the feeling of use is good.
A wheelchair equipped with a brake that can be used by any one of the normal, left-handed, and right-handed persons is realized.

  Hereinafter, the present invention will be described in detail with reference to the best mode for carrying out the invention shown in the drawings.

In the first preferred embodiment for carrying out the present invention shown in FIGS. 1 to 5, reference numeral 1 denotes a foldable wheelchair. The foldable wheelchair 1 includes a skeleton 2, a seat 3, and a backrest. A wheelchair body 8 comprising a portion 4, a footrest portion 5, 5, a right wheel 6, and a left wheel 7, and a grip portion operated on the right hand of a person riding on the wheelchair provided on the right side of the framework portion 2 of the wheelchair body 8 9, a handle 10 extending from the grip portion 9, a handle lock portion 11 that moves and locks the handle 10, a rotating shaft 12 that is connected to the handle 10 and rotates by the handle 10, and a handle lock portion 11 A right brake operation portion 14 comprising a bearing portion 13 which is fixed and fixed to the frame portion 2 and pivotally supports a rotation shaft 12, and a right side which is integrally connected to the handle 10 and moves and locks the handle 10. When the brake operation unit 14 is operated, the right wheel 6 is pressed against the right wheel 6 A right brake 15 that locks the wheel 6, a grip 17 that is provided on the left side of the skeleton 2 of the wheelchair body 8 and that is operated by the left hand of a person on the wheelchair, a handle 18 that extends from the grip 17, the handle A handle lock portion 19 that moves and locks the portion 18, a rotation shaft 20 that is connected to the handle 18 and rotates by the handle 18, and a rotation shaft that fixes the handle lock portion 19 and is fixed to the frame portion 2. The left brake operation unit 22 including a bearing unit 21 that pivotally supports 20 and the left brake operation unit 22, which is integrally connected to the handle 18 and is called a left-hand brake operation unit 22 that is a movement lock of the handle 18, presses against the left wheel 7. A left brake 23 that locks the left wheel 7, and a rotary shaft 12 that connects the left brake 23 and the right brake 15 and is folded so as not to obstruct the folding when the wheelchair body 8 is folded; When the right wheel 6 is locked by the right brake 15 by the operation of the right brake operation unit 14, the right and left brakes 15 and 26 are connected to the right and left brakes 15. The left brake 23 communicated with the communication unit 27 also operates integrally with the right brake 15 to lock the left wheel 7. When the left wheel 7 is locked with the left brake 23 by operating the left brake operation unit 22, the left brake 23 The right brake 15 communicated by the left and right brake communication unit 27 also operates integrally with the left brake 23 to lock the right wheel 6.
That is, the left and right wheels can be locked by operating one of the left and right brake operation units.
The handle lock portions 11 and 19 are forcibly inserted into a linear moving portion 29 where the handles 10 and 11 move linearly and a plurality of handles 10 and 11 provided on the side of the linear moving portion 29 and locked to the portions. The handle 18 is positioned on the linear movement part 29 and locks the left wheel 7 even if the handle 10 is operated and locked to the handle lock part 30 or 31. Conversely, even if the handle 18 is operated and locked to the handle lock portion 30 or 31, the handle 10 is positioned on the linear moving portion 29 and locks the right wheel 6.

In the following description of the embodiment, the same components as those of the best first embodiment are denoted by the same reference numerals, and redundant description is omitted.

The best second embodiment for carrying out the present invention shown in FIGS. 6 and 7 is mainly different from the first preferred embodiment for carrying out the present invention in that the left and right brake connecting portions This is in the point that a folding wheelchair 34 having a left and right brake connecting portion 33 composed of a plurality of angular shafts 30, 31, 32 that slide and extend is formed.
The bearing portions of the rotary shafts 12 and 20 are also hollow, and the shafts 30 and 31 are passed through so that they can slide and extend. Here, “extension / retraction movement” means that the square shafts 30, 31, 32 themselves do not expand / contract, but the length of the left / right brake connecting portion 33 becomes shorter or longer due to movement.

The best third embodiment considered by the inventor shown in FIGS. 8 and 9 is mainly different from the best first embodiment for carrying out the present invention in that the left and right brake communication The foldable wheelchair 37 is formed as a left and right brake connecting portion 36 composed of two flexible operation tubes 34 and 35 formed by passing a wire 38 through a flexible tube.
One end of the wire of the flexible operation tube 34 is connected to the rear side of the handle 10 and the other end is connected to the rear side of the handle 18. One end of the wire of the flexible operation tube 35 is connected to the front side of the handle 10 and the other end is connected to the front side of the handle 18.
With this structure, when one handle is operated and moved, the other handle is also pulled by the wire 38 and can be integrally operated to lock the tire.

10 and 12, the best fourth embodiment considered by the inventor of the present application is mainly different from the best first embodiment for carrying out the present invention in that the left and right are small. A right brake device 40 and a left brake device 41 that can be easily operated by force are provided, and the right brake operation portion 42 and the left brake operation portion 43 that operate the right brake device 40 and the left brake device 41 are left and left separately, respectively. It is provided on the left side of the wheelchair so that it can be operated (it may be provided on the right side of the wheelchair), and the right brake device 40 and the right brake operation unit 42 are connected to each other by a connecting shaft 44 to form a wheelchair 45.
In FIG. 11, the right brake device 40 includes a link mechanism portion 47 housed in a housing 46, a rotating shaft 48 that protrudes to one output side of the link mechanism portion 47, and a rotation fixed to the rotating shaft 48. It comprises a moving shaft 49, a pin 50 provided on the rotating shaft 49, and a tire stopper 51 pressed against the right wheel 6 protruding to the other output side.
An operation arm 53 having a pin support guide hole 52 that rotates integrally with the rotation of the connection shaft 44 is fixed to the connection shaft 44, and the pin 50 is supported through the pin support guide hole 52.
When the right brake operation unit 43 is operated, the connecting shaft 44 rotates and the operation arm 53 rotates. As the operation arm 53 rotates, the pin 50 moves in the pin support guide hole 52 and rotates the rotation shaft 49.
The link mechanism 47 is operated by the rotation of the rotation shaft 49 and the tire stopper 51 is rotated back and forth.
In FIG. 12, since the internal link mechanism of the brake device 41 is an existing device, its description is omitted.

  The fifth embodiment shown in FIG. 13 considered by the present inventor is mainly different from the fourth embodiment for carrying out the present invention in that the right brake operation section 42 and the left brake The operation unit 43 is connected by a link mechanism 55, and a wheelchair 56 is formed in which the left and right brakes are integrally operated by the operation of the left brake operation unit 43.

  14 differs from the fourth preferred embodiment for carrying out the present invention mainly in the sixth preferred embodiment considered by the present inventor shown in FIG. The operation unit 43 is connected by a link mechanism 55, and the right brake operation unit 54 is directly connected to the rotation shaft 49 of the right brake device 40 on the right side of the wheelchair body 8, and the right brake operation unit 54 and the connection shaft 44 are linked. By operating one of the right brake operation unit 54 and the left brake operation unit 43, which are connected by a mechanism 55 (not shown in the figure), the left and right brakes can be operated integrally and released or released. The wheelchair 57 that can be used is formed.

  The seventh embodiment shown in FIG. 15 and FIG. 16 considered by the present inventor differs from the first embodiment for carrying out the present invention mainly in that the brake on the left side. A handle lock portion 63 having stop grooves 61 and 62 for stopping the brake operation handle 60 of the operation portion 59 in the front and rear positions by moving the brake operation handle 60 back and forth is provided, and the brake operation handle 60 is bent and extended in a right angle. A right and left brake connecting portion 64 is provided, and a right brake 65 is provided on the right side of the left and right brake connecting portion 64 so as to turn back and forth by rotation of the left and right brake connecting portion 64 to stop and release the right wheel 6; A left brake 67 is provided on the left side of the left and right brake connecting portion 64 to turn back and forth by the rotation of the left and right brake connecting portion 64 to stop the left wheel 7 and release the stop. A right connecting portion support portion 67 is provided on the right side of the right portion 64 and inside the right brake 65 so as to be rotatably supported in a lateral free state with respect to the left and right brake connecting portion 64. A left side connecting portion support portion 68 is provided inside the 65 so that the left and right brake connecting portion 64 is rotatably supported in a lateral free state. It consists of a horizontal shaft 71 to be supported and a falling shaft 72 that is rotated and folded by the connecting portion 70, and when the wheelchair body 8 is folded, the right side contact portion support portion 67 is horizontal without being blocked by the falling shaft 72. The wheelchair body 8 is completely folded when the connecting portion 70 is brought out of the right side connecting portion support portion 67, and the folding shaft 72 is connected to the connecting portion 70. 0 lies in the formation of the wheelchair 73 comprising as hanging pivoted downward.

  The eighth embodiment shown in FIG. 17 considered by the present inventor is mainly different from the seventh embodiment for carrying out the present invention. A support pipe 75 formed by welding and fixing one end to the right communication part support part 67 through the free is provided. When the wheelchair is opened, the connection part 70 is accommodated in the support pipe 75, and when the wheelchair is folded, the connection part 70 is It is in the place where it goes out of the right side communication support part 67 and it folds down.

  The present invention is used in the industry of manufacturing wheelchairs.

1 is a front view of the best first embodiment for carrying out the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG . 1 is a front view of a brake lock state according to a first embodiment for carrying out the present invention. 1 is a plan view of the best first embodiment for carrying out the present invention. FIG. 3 is an operation diagram of the brake operation unit according to the first embodiment for carrying out the present invention. The folding front view of the wheelchair of the best 1st Embodiment for implementing this invention. The front view of 2nd Embodiment of the best for implementing this invention. The folding front view of the wheelchair of the best 2nd Embodiment for implementing this invention. The front view of the wheelchair of the best 3rd Embodiment which this inventor considered . The operation | movement figure of the brake operation part of the best 3rd Embodiment which this inventor considered . The perspective view of 4th Embodiment of the best which the inventor considered. The operation | movement figure of the brake of 4th Embodiment of the best which this inventor considered. The brake structure figure of the best 4th embodiment which the inventor considered. The perspective view of 5th Embodiment of the best which this inventor considered. The perspective view of 6th Embodiment of the best which the inventor considered. The perspective view of the 7th best embodiment which this inventor considered. Schematic which folded the wheelchair of good 7th Embodiment which this inventor considered. The block diagram of the right-and-left brake communication part of 8th Embodiment of the best which this inventor considered.

1: Folding wheelchair, 2: Skeleton
3: seat, 4: back support,
5: Foot rest, 6: Right wheel,
7: Left wheel, 8: Wheelchair body,
9: grip part, 10: handle,
11: Handle lock part, 12: Rotating shaft,
13: Bearing part, 14: Right side brake operation part,
15: Right brake, 17: Grip,
18: handle, 19: handle lock,
20: Rotating shaft, 21: Bearing part,
22: Left brake operation section, 23: Left brake,
25: Communication shaft, 26: Communication shaft,
27: Left and right brake communication part, 30: Square shaft,
31: Square shaft, 32: Square shaft,
33: Left and right brake communication part, 34: Flexible operation tube,
35: Flexible operation pipe, 36: Left and right brake communication section,
37: Folding wheelchair, 38: Wire,
40: right brake device, 41: left brake device,
42: Right brake operation unit, 43: Left brake operation unit,
44: Connecting shaft, 45: Wheelchair,
46: Housing, 47: Link mechanism,
48: rotating shaft, 49: rotating shaft,
50: Pin, 51: Tire stop,
52: Pin support guide hole, 53: Operation arm,
54: Right brake operation section, 55: Link mechanism,
56: Wheelchair, 57: Wheelchair,
59: Brake operation part, 60: Brake operation handle,
61: Stop groove, 62: Stop groove,
63: Handle lock part, 64: Left and right brake communication part,
65: Right brake, 66: Left brake,
67: Right communication part support part, 68: Left communication part support part,
69: Pin shaft, 70: Connection part,
71: Horizontal shaft, 72: Folding shaft,
73: Wheelchair, 75: Support pipe,
76: Stopper, 77: Stopper.

Claims (1)

A wheelchair body (8) comprising a skeleton (2);
A grip part (9) operated by the right hand of a person on a wheelchair provided on the right side of the wheelchair body (8), a handle (10) extending from the grip part (9), and movement of the handle (10) Right- hand brake operation comprising a rotation shaft (12) on the side operated by the right hand that is rotated by a shaft, and a bearing portion (13) fixed to the frame portion (2 ) and pivotally supporting the rotation shaft (12). Part (14);
A right brake (15) that presses against the right wheel (6) and locks the right wheel (6) by operating the right brake operation section (14);
By the movement of the grip (17) operated by the left hand of the person on the wheelchair provided on the left side of the wheelchair body (8), the handle (18) extending from the grip (17), and the movement of the handle (18) Left- hand brake operation unit comprising a rotation shaft (20) on the side operated by the rotating left hand and a bearing portion (21) fixed to the frame portion (2) and supporting the rotation shaft (20). (22)
A left brake (23) that presses against the left wheel (7) and locks the left wheel (7) by operating the left brake operation section (22);
A connecting shaft (25) connected to the rotating shaft (12) projecting inward of the bearing portion (13) by the first connecting portion so that the outward end side can freely rotate, and protruded to the inside of the bearing portion 21 The connecting shaft (26), which is connected to the rotating shaft (20) by the second connecting portion so that the outward end side can freely rotate, and the inward end sides of the connecting shaft (25) and the connecting shaft (26) are rotated. In the folding of the wheelchair, which is movably connected at the third connecting portion and the right wheel (6) and the left wheel (7) are brought close to each other, the connecting shaft (25) and the connecting shaft (26) are connected to the first connecting portion. A left and right brake connecting portion (27) folded and folded at the second connecting portion and the third connecting portion ,
When the right wheel (6) is locked by the right brake (15) by the operation of the right brake operation section (14), the left brake (23) also operates integrally with the right brake (15) by the left and right brake connecting section (27). When the left wheel (7) is locked and the left wheel (7) is locked by the left brake (23) by the operation of the left brake operation section (22), the right brake (15) is also moved by the left and right brake connecting section (27). A foldable wheelchair that operates integrally with the left brake (23) to lock the right wheel (6).

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