JP2005143894A - Brake mechanism of wheelchair and wheelchair having the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a brake mechanism having an openable/closable backrest, restricting the rotation of wheels interlocked with the opening operation of the backrest and arbitrarily restricting the rotation of the wheels irrelevant to the opening operation of the backrest in a wheelchair allowing the user to get on/off from the front/rear direction and to get on with him/her sitting astride, and to provide the wheelchair having the brake mechanism and allowing a user to get on/off without standing up. <P>SOLUTION: This brake mechanism for the wheelchair is provided with the openable/closable backrest, operates an interlocking lever by the opening operation of the backrest, pushes a contact device towards a wheel by the operation and restricts the rotation of the wheel. Regardless of the opening operation of the backrest, the contact device is pushed against the wheel by operating the lever to restrict the rotation of the wheel. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a wheelchair brake mechanism and a wheelchair including the same.

  In the prior art, a low-profile frame formed in a cross-shaped plan view consisting of a vertical frame extending in the front-rear direction and a horizontal frame extending in the left-right direction is provided, and a horse ride extending in the front-rear direction is provided above the vertical frame. The left and right handrail frames provided in a portion higher than the height of the saddle by providing left and right intermediate saddles for riding in a state, and arranging a space portion that can pass forward and backward on both left and right sides of the saddle. A traveling wheel with a handling drive ring provided on the outer side of the traveling wheel, and the lower end of the outer periphery is positioned slightly higher than the ground contact position at the lower end of the traveling wheel on the front and rear of the vertical frame. There is a wheelchair for a disabled person in which a rolling wheel that can be moved up and down like a seesaw is supported by a ground point as a fulcrum, and a step is provided in a lateral frame located on both the left and right sides of the saddle.

According to this technique, since there is no backrest, it is difficult for a user who is difficult to take a riding posture to keep the riding posture for a long time. Further, when riding on the wheelchair device for a disabled person, it is necessary to operate a brake mechanism that restrains rotation of a traveling wheel located at a position away from the user, so that it is difficult for some users to operate.
Japanese Patent Laid-Open No. 5-115510

  Accordingly, the present invention has been made in view of the above circumstances, and has a backrest that can be opened and closed, and can further restrain the rotation of the wheel in conjunction with the opening operation of the backrest, and can be used for the opening operation of the backrest. It is an object of the present invention to provide a brake mechanism that can arbitrarily restrain the rotation of the wheel regardless of the wheel and a wheelchair that includes the brake mechanism and that allows a user to get on and off without getting up.

In the first aspect of the invention, in a wheelchair capable of getting on and off in the front-rear direction and riding in a horse riding state, the backrest can be opened and closed, and the rotation of the wheel is constrained in conjunction with the opening operation of the backrest. The rotation of the wheel can be arbitrarily restrained irrespective of the opening operation of the backrest.
The invention of claim 2 activates the interlock arm by an operation of opening the backrest, presses the contact tool against the wheel by this operation, can restrain the rotation of the wheel, and regardless of the operation of opening the backrest, By operating the lever, the contact tool is pressed against the wheel, and the rotation of the wheel can be restrained.
According to a third aspect of the present invention, there is provided a pair of left and right side frames, a connection frame for connecting the side frames at a low position, a seat mounted in a horse riding state disposed on an upper portion of the connection frame, and a rear surface of the side frame. A seat portion that substantially matches the rear surface of the frame in the front-rear direction; wheels and casters disposed on the side frame; a backrest portion that is openable and closable on the side frame; The brake mechanism according to claim 1 or 2 provided on the side frame is provided, and can be boarded / exited in the front-rear direction.

Therefore, according to the first aspect of the invention, the backrest can be opened and closed, and the rotation of the wheel can be restrained in conjunction with the opening operation of the backrest, and the backrest opening operation is related. It was possible to restrain the rotation of the wheel arbitrarily. According to this, when getting on and off with the backrest open, it is possible to prevent getting on and off while forgetting to restrain the rotation of the wheel. Also, the wheelchair cannot be run with the backrest open. Therefore, there is an effect of improving the safety of the wheelchair. Furthermore, when boarding with the backrest released, the rotation of the wheel can be restrained only by opening the backrest near the user. Moreover, the procedure which restrains rotation of a wheel can be omitted from a series of procedures when getting on and off with the backrest open. Therefore, the troublesomeness of the user or the assistant can be reduced. In addition, the user can stay at ease in any place while securing the riding posture.
Furthermore, according to the invention of claim 2, the interlock arm is operated by the back opening operation, and the contact tool is pressed against the wheel by this operation, and the rotation of the wheel can be restricted. At the same time, it is possible to restrain the rotation of the wheel by pressing the contact tool against the wheel by operating the lever regardless of the back opening operation. According to this, the rotation of the wheel can be restricted in conjunction with the opening operation of the backrest, and the rotation of the wheel can be arbitrarily restricted regardless of the opening operation of the backrest.
According to the invention of claim 3, the pair of left and right side frames, the connecting frame that connects the side frames at a low position, and the rear surface that can be seated in a horse riding state disposed on the upper part of the connecting frame. Is a seat that is substantially coincident with the rear surface of the side frame in the front-rear direction, wheels and casters disposed on the side frame, and a backrest that can be opened and closed on the back frame disposed on the side frame. And a brake mechanism according to claim 1 or 2 disposed on the side frame, and is capable of getting on and off from the front-rear direction. According to this, it is possible to get on and off without the user getting up. Moreover, it can be set as a highly safe wheelchair by having provided the brake mechanism concerning Claim 1 thru | or 2, and having provided the backrest.

  The wheelchair brake mechanism according to the present invention comprises a backrest that can be opened and closed, and an interlocking lever is operated by opening the backrest, and the contact tool is pressed against the wheel by this operation to restrain the rotation of the wheel. Made it possible. At the same time, the contact tool is pressed against the wheel by operating the lever, and the rotation of the wheel can be restrained regardless of the opening operation of the backrest. In other words, the rotation of the wheel can be restricted in conjunction with the opening operation of the backrest, and the rotation of the wheel can be arbitrarily restricted regardless of the opening operation of the backrest.

  According to this, when getting on and off with the backrest open, it is possible to prevent getting on and off in a state where the rotation of the wheel is forgotten to be restrained. Also, the wheelchair cannot be run with the backrest open. Therefore, there is an effect of improving the safety of the wheelchair. Furthermore, when boarding with the backrest released, the rotation of the wheel can be restrained only by opening the backrest near the user. Moreover, the procedure which restrains rotation of a wheel can be omitted from a series of procedures when getting on and off with the backrest open. Therefore, the troublesomeness of the user or the assistant can be reduced. In addition, the user can stay at ease in any place while securing the riding posture.

  One embodiment of a wheelchair brake mechanism and a wheelchair equipped with the same according to the present invention will be described with reference to the drawings. FIG. 1 is an overall front view showing a wheelchair. FIG. 2 is an overall side view showing the wheelchair. FIG. 3 is a cross-sectional view taken along the line AA in FIG. FIG. 4 is an explanatory view showing the structure of the wheelchair. FIG. 5 is an explanatory view showing a brake mechanism. FIG. 6 is an explanatory view showing the operating state of the brake mechanism. FIG. 7 is an explanatory view showing a state where a user transfers to a wheelchair. In addition, when a user uses a wheelchair, it is set as front, back, left, and right on the basis of the direction of the user.

  The wheelchair 1 includes a pair of left and right side frames 2, 2, a connection frame 3 that connects the side frames 2, 2, a seat portion 4 that is disposed above the connection frame 3, and the side portion A pair of wheels 5, 5 respectively disposed on the left and right outer sides of the frames 2, 2, a pair of casters 6, 6 disposed at the rear of the side frames 2, 2, and the side frames 2, 2 Mainly composed of a pair of backrest portions 7 and 7 disposed on the upper portion of 2 and brake mechanisms 8 and 8 capable of restraining the rotation of the wheels 5 and 5 disposed on the side frames 2 and 2. Is done.

First, the side frames 2 and 2 will be described.
The side frames 2 and 2 have a pair of symmetrical structures. Hereinafter, one side frame 2 will be described.
2a is a main pillar. A substantially L-shaped connector 2b is fixed to the lower end of the main pillar 2a in front view.
Reference numeral 2c denotes an L-shaped arm bent substantially in an L shape in a side view. The front end of the L-shaped arm 2c is fixed to the substantially rear surface of the middle portion of the main pillar 2a. At this time, the rear end of the L-shaped arm 2c is made to face downward.
Reference numeral 2d denotes an arm that is bent in a substantially square shape in a side view. The rear end of the arm 2d is fixed to the front surface of the substantially middle portion of the main pillar 2a. Then, a mounting shaft 2e in the front-rear direction is fixed to the rear surface of the front lower portion of the arm 2d. Thereafter, the footrest 9 is attached to the mounting shaft 2e.

10 is an armrest base. The lower surface of the substantially central portion of the armrest base 10 is fixed to the upper end of the column 2a so that the armrest base 10 faces in the front-rear direction.
And the side frame 2 is comprised by adhering the plate 11 in which the void | hole part 11a was pierced between the said support | pillar 2a and the arm 2d.
Thereafter, the axles 5a and 5a of the wheels 5 and 5 are inserted into the holes 11a and 11a of the plates 11 and 11 of the side frames 2 and 2, and are fixed by the nut members 12 and 12, respectively. Then, the casters 6 and 6 are attached to the rear ends of the L-shaped arms 2c and 2c of the side frames 2 and 2, respectively. Further, the rollers 13 and 13 are attached to the left and right air holes 2f and 2f formed in the lower front portions of the arms 2d and 2d of the side frames 2 and 2 with shaft members 14 and 14, respectively. At this time, the rollers 13 and 13 are positioned outside the side frames 2 and 2 in the left-right direction.

The armrest bases 10 and 10 of the side frames 2 and 2 are substantially horizontal with the lowest points of the wheels 5 and 5 and the casters 6 and 6 in contact with a substantially horizontal floor surface. Thus, the side frames 2 and 2 are configured. The rollers 13 and 13 are for preventing the wheelchair 1 from overturning, and the wheels 5 and 5 and the casters 6 and 6 are in contact with the floor surface and are slightly floating in the air. ing. Further, the wheels 5, 5 are provided with hand rims 5b, 5b so that the user can handle them.
In the drawings, casters 6 and 6 and rollers 13 and 13 and footrests 9 and 9 are attached to main pillars 2a and 2a via L-shaped arms 2c and 2c and arms 2d and 2d. A function similar to that of the above-described embodiment can be obtained by arranging a girder pipe in the front-rear direction at the lower part of 2a, and arranging casters 6, 6 and rollers 13, 13 and foot supports 9, 9 on the girder pipe. A side frame can be constructed.

Next, the connecting frame 3 that connects the side frames 2 and 2 will be described.
3a is a main digit. L-shaped connecting plates 3b and 3b are fixed to both ends of the main beam 3a in a front view.
3c is an inner mast in which a substantially U-shaped fixing plate 3d is fixed to the lower end in a side view. The connecting frame 3 is configured by fixing the fixing plate 3d of the inner mast 3c to the upper surface of the substantially middle portion of the main beam 3a.
Then, the connecting tools 2b and 2b of the side frames 2 and 2 are arranged so as to overlap with the upper and side surfaces of the connecting plates 3b and 3b of the connecting frame 3, and fixed with screws 15, 15,. Then, the pair of left and right side frames 2 and 2 are connected by a connecting frame 3.

Next, the seat part 4 disposed on the upper part of the connecting frame 3 will be described.
4a is an outer mast through which the inner mast 3c of the connecting frame 3 can be inserted. A hole 4b is formed in the upper front surface of the outer mast 4a, and the nut member 4c is fixed so that the hole 4b and the shaft center coincide with each other.
4d is a substantially U-shaped sheet receiver in front view. The lower surface of the front portion of the sheet receiver 4d is fixed to the upper end of the outer mast 4a. Then, the reinforcing material 4e is fixed between the rear lower surface of the sheet receiver 4d and the lower rear surface of the outer mast 4a. Thereafter, the sheet portion 4 is configured by disposing a sheet 16 having a substantially rectangular parallelepiped shape in the front-rear direction on the upper surface of the sheet receiver 4d and fixing it with screws 17 and 17.

Then, the inner mast 3c of the connecting frame 3 is inserted through the outer mast 4a of the seat portion 4, and one of the plurality of hole portions 3e, 3e, 3e formed in the inner mast 3c and the outer mast 4a The screw member 18 that can be manually tightened is screwed onto the nut member 4c, and the shaft portion 18a provided at the rear end of the screw member 18 is inserted into the hole 3e of the inner mast 3c. Inserting and fixing the seat portion 4 to the connecting frame 3.
In the seat portion 4, the height of the seat portion 4 can be adjusted by selecting the hole portion 3e of the inner mast 3c of the connecting frame 3 to be matched with the nut member 4c of the outer mast 4a. Furthermore, the width of the seat 16 of the seat portion 4 is configured to be narrower than the width interval between the pair of left and right side frames 2 and 2 so that the user can pass through the wheelchair 1 in the front-rear direction so as to straddle the seat 16. It has become. In addition, the seat 16 of the seat portion 4 can be seated by the user while riding.
Further, the rear surface of the seat 16 of the seat portion 4 and the rear surfaces of the L-shaped arms 2c, 2c of the side frames 2, 2 are substantially aligned in the front-rear direction. This is to make the seat 16 of the seat portion 4 closer to a bed or the like on which the user is seated when getting on and off the wheelchair 1.

Next, the backrest portions 7 and 7 disposed on the upper portions of the side frames 2 and 2 will be described.
The backrests 7 and 7 have a pair of symmetrical structures. Hereinafter, one backrest 7 will be described.
Reference numeral 7a denotes a rotating lever that is substantially bowl-shaped and substantially L-shaped when viewed from the front. The grip member 7b is attached to a portion bent substantially upward at the front portion of the rotating lever 7a. Then, a substantially rectangular backrest 7c is attached to the part bent inward in the left-right direction at the rear part when viewed from the front. Thereafter, the rotating lever 7a is disposed in a groove 10a provided in the front-rear direction of the armrest base 10 of the side frame 2.
Reference numerals 7d and 7d denote locking shafts. The rotating lever 7a is adapted so that the locking shafts 7d, 7d can come into contact with the notches 10b, 10b on the front and rear lower surfaces provided in the groove 10a of the armrest base 10 of the side frame 2. It is made to adhere to the outer surface of each.

Then, the bearing member 7e is fixed to a substantially upper surface of the rotating lever 7a, which substantially coincides with the notch 10c provided on the outer side in the front left-right direction of the armrest base 10 of the side frame 2 in the front-rear direction. .
Thereafter, an armrest 19 having a substantially rectangular parallelepiped shape and extending in the front-rear direction is disposed on the upper surface of the armrest base 10 of the side frame 2, and the armrest 19 is attached to the side by screws 20, 20,. The backrest 7 is configured by being fixed to the armrest base 10 of the part frame 2.
The armrest 19 is provided with a notch 19a so that the bearing member 7e and the armrest 19 do not interfere with each other. The rotating lever 7a is rotatably held between the groove 10a of the armrest base 10 of the side frame 2 and the armrest 19, so that the locking shafts 7d, 7d and the side frame 2 are supported. The rotation range of the armrest base 10 is regulated by the notches 10b and 10b.

The backrest portions 7, 7 configured as described above hold the grip members 7 b, 7 b and rotate the rotation levers 7 a, 7 a, so that the backrests 7 c, 7 c become the left and right side frames 2, 2. 2 (can be opened / closed) within a range from a state between 2 (closed state) to a state (opened state) located on the outer side in the left-right direction of the side frames 2, 2, and the locking shaft 7d, 7d,... And the notches 10b, 10b,... Of the armrest bases 10, 10 of the side frames 2, 2, can be held in their respective states. It is also possible to directly hold the backrest 7c, 7c and open / close the backrest 7c, 7c.
Further, by bending the rear portions of the turning levers 7a and 7a of the backrest portions 7 and 7 downward in a side view, the backrests 7c and 7c can support a low position of the user's back. According to this, when the user gets on the wheelchair 1 and moves, the user's buttocks enter the space between the seat 16 of the seat portion 4 and the backrest 7c, 7c due to vibration or the like. This prevents the user from slipping off the seat 16 and prevents the backrests 7c and 7c from being opened.

If the gap between the backrest 7c, 7c and the seat 16 of the seat portion 4 can be reduced by enlarging the backrest 7c, 7c of the backrest portion 7, 7, the rotating levers 7a, 7a in side view can be reduced. There is no problem even if the downward bending of the rear part is eliminated. Further, in the drawings, the portions of the backrest portions 7 and 7 to which the grip members 7b and 7b of the rotating levers 7a and 7a are attached are bent upward, but may be bent in the left and right inner directions. . According to this, it comes to play the role of a handrail that prevents the user from falling forward.
Further, although not shown, a handle member may be attached to the back surface of the backrests 7c, 7c. According to this, when a helper assists, this handle member can be used as a pusher, and it becomes easy to perform assistance.

Next, the brake mechanisms 8 and 8 that can restrain the rotation of the wheels 5 and 5 will be described.
The brake mechanism 8 includes a pair of symmetrical structures. Hereinafter, one brake mechanism 8 will be described.
Reference numeral 21 denotes a base that is substantially U-shaped and triangular in a front view. The base 21 is fixed to the plate 22 having a substantially triangular shape in a side view provided on the main column 2a of the side frame 2 with screws 23 and 23.
Reference numeral 24 denotes a contact tool which is bent into a substantially U shape. A pin 24a in the front-rear direction is fixed to a substantially middle portion of the contact tool 24, and a boss 25 having a front-rear direction axial center is fixed to the open end side. Then, the spring body 26 is attached to the boss 25 so as to bias the contact tool 24 upward. Thereafter, the boss 25 is arranged between the apexes located in the lower part in the front view of the base 21 and pivoted by the shaft member 27.

Reference numeral 28 denotes a rotating block having a substantially rectangular parallelepiped shape. On the upper surface side of the rotating block 28, a vertical lever 29 having a grip member 29a attached thereto is attached. The rotating block 28 is disposed between apexes located on the outer side in the left-right direction when the base 21 is viewed from the front, and is pivotally connected to the shaft member 30. At this time, the rotation block 28 is disposed so as to restrict the rotation of the contact tool 24 due to the urging force of the spring body 26. That is, the upper surface of the contact tool 24 and the lower surface of the rotating block 28 are arranged to contact each other.
31 is an interlocking arm. The interlocking arm 31 is configured by fixing a substantially U-shaped comb member 31b in a front view to the lower end of an arm 31a bent in a bowl shape. Then, the part bent rearward on the upper side of the arm 31 a is pivotally connected to the bearing member 7 e of the backrest 7. At the same time, the comb member 31b is inserted so as to sandwich the left and right of the pin 24a of the contact tool 24, the interlocking arm 31 is disposed, and the brake mechanism 8 is configured.

The movement of the brake mechanisms 8 and 8 configured in this way will be described.
The backrests 7 and 7 of the backrest portions 7 and 7 are rotated toward the opened state. Then, along with this, the bearing members 7e and 7e of the backrest portions 7 and 7 also rotate and push down the interlocking arms 31 and 31. When the interlocking arms 31, 31 are pushed down, the comb members 31 b, 31 b of the interlocking arms 31, 31 push down the pins 24 a, 24 a of the contact tools 24, 24 against the urging force of the spring bodies 26, 26, thereby The contact tools 24 and 24 are rotated downward about the 27 and 27. Thereby, the contact tools 24, 24 are pressed against the wheels 5, 5, and the rotation of the wheels 5, 5 is restrained (see FIG. 6 (a)).
And in order to cancel | release the restraint of rotation of the wheels 5 and 5, the backrests 7c and 7c of the backrest parts 7 and 7 are rotated toward the closed state. Then, the interlocking arms 31 and 31 are pulled up, and the force to push down the pins 24a and 24a of the contact tools 24 and 24 is released. The contact tools 24, 24 are rotated upward about the shaft members 27, 27 by the urging force of the spring bodies 26, 26. Thereby, the restriction | limiting of rotation of the wheels 5 and 5 is cancelled | released.

Further, the levers 29 and 29 are rotated in the left and right outer directions. Accordingly, the rotation blocks 28 and 28 are rotated around the shaft members 30 and 30, and the rotation blocks 28 and 28 are opposed to the urging force of the spring bodies 26 and 26, while the contact tools 24 and 24 are rotated. Press down. Then, the contact tools 24 and 24 are rotated downward about the shaft members 27 and 27. When the levers 29 and 29 are further rotated, the contact surfaces of the rotation blocks 28 and 28 with respect to the contact tools 24 and 24 are switched, and the contact tools 24 and 24 are rotated by the urging force of the spring bodies 26 and 26. The shaft members 30, 30 are positioned on the direction of the force acting on the shaft 28. That is, the rotation blocks 28 and 28 are sandwiched between the shaft members 30 and 30 and the contact tools 24 and 24, and the levers 29 and 29 and the rotation blocks 28 and 28 are moved by the urging force of the spring bodies 26 and 26. It will not return. At the same time, the contact tools 24, 24 are pressed against the wheels 5, 5, and the rotation of the wheels 5, 5 is restrained (see FIG. 6B).
And in order to cancel | release the restraint of rotation of the wheels 5 and 5, the levers 29 and 29 are rotated upwards. Then, the locked state of the levers 29, 29 and the rotation blocks 28, 28 is released, and the contact members 24, 24 are rotated upward about the shaft members 27, 27 by the urging force of the spring bodies 26, 26. The Thereby, the restriction | limiting of rotation of the wheels 5 and 5 is cancelled | released.

That is, the rotation of the wheels 5 and 5 can be restrained in conjunction with the opening operation of the backrests 7c and 7c of the backrest portions 7 and 7, and the backrest 7c and 7c of the backrest portions 7 and 7 are related to the opening operation. The brake mechanisms 8 and 8 can arbitrarily restrain the rotation of the wheels 5 and 5.
According to this, the wheelchair cannot be run with the backrests 7c, 7c of the backrest portions 7, 7 open. Therefore, there is an effect of increasing the safety of the wheelchair 1. In addition, since the rotation of the wheels 5 and 5 can be arbitrarily restrained regardless of the opening operation of the backrests 7c and 7c of the backrest portions 7 and 7, the user can secure the riding posture, You can stay with confidence at any place.

Although not shown, it is possible to restrain the rotation of the wheels 5 and 5 in conjunction with the opening operation of the backrests 7c and 7c of the backrest portions 7 and 7 by a brake mechanism different from the above. In addition, the rotation of the wheels 5 and 5 can be arbitrarily restricted regardless of the opening operation of the backrests 7c and 7c of the backrest portions 7 and 7. One example will be described below.
First, a brake device capable of restraining the rotation of the wheels 5 and 5 that are operated by pulling a wire is disposed on the side frames 2 and 2 or the wheels 5 and 5. Then, one end of the wire is attached to a brake lever that contacts the contact tools 24 and 24 that are operated by operating the levers 29 and 29 of the brake mechanisms 8 and 8 or opening the backrests 7c and 7c of the backrest portions 7 and 7.
If comprised in this way, a brake device can be operated according to opening operation of the backrests 7c and 7c of the backrest parts 7 and 7, and the brake devices are operated by operating the levers 29 and 29. You can also. In addition, by using a brake device that operates with a wire, the rotation of the plurality of wheels 5 and 5 can be restricted by a single brake mechanism. Furthermore, it is also possible to have only one backrest portion 7, 7 disposed on the wheelchair 1.

One method of using the wheelchair 1 in the present embodiment configured as described above will be described with reference to FIG.
First, in advance, the inner mast 3c of the connecting frame 3 that matches the nut member 4c of the outer mast 4a of the seat portion 4 so that the upper surface of the seat 16 of the seat portion 4 and the floor surface of the bed B substantially coincide. The hole portion 3e is selected and fixed by the screw member 18, and the height of the sheet 16 of the sheet portion 4 is adjusted. Or ask your helper to adjust. According to this, it becomes easy for a user to transfer from the bed B.
Next, a sitting posture is taken at the side end of the bed B.
And the wheelchair 1 is arrange | positioned so that the seat part 4 of the wheelchair 1 may be located between a user's legs, and the backrests 7c and 7c of the backrest parts 7 and 7 may be located in the user side. Alternatively, ask the assistant to place the wheelchair 1 (see (a) figure).
Thereafter, the backrests 7c and 7c of the backrest portions 7 and 7 are gripped, and the backrests 7c and 7c are rotated leftward and rightward to open the backrests 7c and 7c ((b) and (c). (See figure). Then, in connection with this, rotation of the wheels 5 and 5 is restrained.
Then, it moves from the bed B to the seat 16 of the seat portion 4 in a horseback manner so as to shift its waist (see FIG. 4D). That is, transfer is possible without the user getting up.
Thereafter, the grip members 7b and 7b of the backrest portions 7 and 7 are gripped, the backrests 7c and 7c are rotated in the left and right inner directions, and the backrests 7c and 7c are closed. Then, along with this, the rotation restriction of the wheels 5 and 5 is released. This completes the transfer of the user to the wheelchair 1 (see FIG. 5E).

And it moves to the destination (refer to (f) figure). When the movement is completed and the user stays on the wheelchair 1, the levers 29 and 29 of the brake mechanisms 8 and 8 are rotated to restrain the rotation of the wheels 5 and 5. As a result, it is possible to stay with confidence.
Moreover, when transferring to a chair, the wheelchair 1 is made to approach so that the rear side of the wheelchair 1 is located on the chair side. And what is necessary is just to reverse the procedure of the transfer to the above-mentioned wheelchair.
Needless to say, if the user does not have trouble getting up, getting on and off from the front of the wheelchair 1 is also possible.

Therefore, this wheelchair 1 can be boarded / exited from the front / rear direction, and can be boarded / excited without a user standing up when getting on / off from the rear.
Further, since the brake mechanisms 8 and 8 are provided, the brake mechanisms 8 and 8 are operated in accordance with the opening operation of the backrests 7c and 7c of the backrest portions 7 and 7, and the rotation of the wheels 5 and 5 is restricted. It is possible to omit the procedure of restraining the rotation of the wheels 5 and 5 from a series of procedures when getting on and off the wheelchair 1. Further, when the passenger rests with the backrests 7c, 7c of the backrests 7, 7 being on board, the wheel 5 is opened by opening the backrests 7c, 7c of the backrests 7, 7 located near the user. , 5 can be restricted. Therefore, the troublesomeness of a caregiver or a user can be reduced.
In addition, when getting on and off with the backrests 7c and 7c of the backrest portions 7 and 7 getting on and off, it is possible to prevent getting on and off while forgetting to restrain the rotation of the wheels 5 and 5. Furthermore, the wheelchair 1 cannot be run in a state where the backrests 7c and 7c of the backrest portions 7 and 7 are opened. Therefore, the wheelchair 1 is highly safe.

The whole front view which shows a wheelchair. The whole side view which shows a wheelchair. AA sectional drawing in FIG. Explanatory drawing which shows the structure of a wheelchair. Explanatory drawing which shows a brake mechanism. (A) The side view which shows a brake mechanism. (B) BB sectional drawing in (a) figure. Explanatory drawing which shows a mode that the brake mechanism act | operated. (A) Explanatory drawing which shows a mode that the brake mechanism act | operated by rotation of the backrest. (B) Explanatory drawing which shows a mode that the brake mechanism act | operated by operation of the lever. Explanatory drawing which shows a mode that a user transfers to a wheelchair. (A) Whole side view which shows a mode that the wheelchair was located in front of the user. (B) The whole front view which shows a mode that the backrest was open | released. (C) Whole side view which shows a mode that the backrest was open | released. (D) Whole side view which shows a mode that it transfers to a wheelchair. (E) The whole side view which shows a mode that the backrest was closed. (F) Whole side view which shows a mode that it moves with a wheelchair.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wheelchair 2 Side part frame 3 Connection frame 4 Seat part 5 Wheel 6 Caster 7 Backrest part 7c Backrest 8 Brake mechanism 24 Contact tool 29 Lever 31 Interlocking arm

Claims (3)

  A wheelchair capable of getting on and off from the front-rear direction and riding in a horse-riding state is provided with a backrest that can be opened and closed, and the rotation of the wheel can be restrained in conjunction with the opening operation of the backrest, A brake mechanism for a wheelchair characterized in that it is possible to arbitrarily restrain the rotation of a wheel regardless of an opening operation.   The interlock arm is operated by opening the backrest, the contact tool is pressed against the wheel by this operation, and the rotation of the wheel can be restrained, and the lever is operated by operating the lever regardless of the opening operation of the backrest. The wheelchair brake mechanism according to claim 1, wherein the contact tool is pressed against the wheel to restrain the rotation of the wheel.   A pair of left and right side frames, a connecting frame for connecting the side frames at a low position, and a seat mounted in a horse riding state disposed on the upper part of the connecting frame, and a rear surface thereof in a front-rear direction with a rear surface of the side frame A seat part that is substantially coincident, a wheel and a caster arranged on the side frame, a backrest part that is openable and closable on the side frame, and arranged on the side frame. A wheelchair comprising the brake mechanism according to claim 1 or 2 and capable of getting on and off from the front-rear direction.

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