JP2000312697A - Fixing device for wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix a wheelchair inside a car room which is low in its height by manually fixing the wheelchair on a floor. SOLUTION: This device is provided with a fixed supporting member 32 assembled on the seat frame of the wheelchair, a movable supporting member 33 linked through links 31a and 31b capable of vertical extension and contraction to this fixed supporting member, a manual operating means 36 for moving the movable supporting member 33 upward by linking it to the side of a seat frame 11 and for moving the member downward by manually canceling linkage with the side of the seat frame 11, a lock means 34 provided on the movable supporting member 33 for fixing the movable supporting member 33 by hooking it on a hook means on the floor at the time of falling and a cancel operating means 37 for canceling the fixture of the movable supporting member 33 onto the floor due to the lock means 34 with canceling operation and the wheelchair can be fixed by operating a manual operating means 36 through the rear opening part of a vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a wheelchair fixing device for fixing a wheelchair on various floors such as a vehicle floor.

[0002]

2. Description of the Related Art A number of wheelchair fixing devices for fixing a wheelchair on a floor of a vehicle or the like in a state where a person is seated have already been proposed. In such a fixing device, it is most important that the wheelchair is securely and firmly fixed on the floor, but the operation performed by an assistant to fix and release the wheelchair is simple, It is also important that the structure of the anchoring device is not complicated and that the wheelchair can be anchored wherever possible. In order to solve such a problem, the present applicant has proposed a wheelchair fixing device in Japanese Patent Laid-Open No. 6-181950.

[0003] The wheelchair fixing device includes a fixed support member mounted on a seat frame of the wheelchair, a movable support member connected to the fixed support member via a vertically expandable and contractible link, A foot pedal that is rotatably mounted and moves the movable support member that is in the up position by a stepping operation down, and a hook that is disposed on the movable support member and that is provided on the floor when the movable support member descends Lock means for locking the movable support member to the floor by hooking means, and release operation means for releasing the fixation of the movable support member to the floor by the lock means by a release operation connected to the lock means. ing.

[0004]

As described above, in the wheelchair fixing device, the movable supporting member is moved down by stepping on the foot pedal to move the movable supporting member to the floor via the locking means. By fixing, the wheelchair is fixed on the floor. For this reason, for example, it may be difficult to step on the pedal of the wheelchair fixing device in a cabin having a low indoor height, and in this case, it is difficult to fix the wheelchair on the cabin floor.

Further, when the wheelchair is fixed on a floor in a room where the pedal of the wheelchair fixing device can be stepped on, the front part of the wheelchair rises by the action of the stepping force, and the locking means is used. It may be difficult to fix the wheelchair on the floor smoothly, and to control the run-out while the wheelchair is fixed on the frame, fix the wheelchair at least three places on the left, right, front and rear with respect to the floor. Therefore, the number of lock means provided increases.

Accordingly, it is an object of the present invention to address these problems in a wheelchair anchoring device of this type.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a fixing device for a wheelchair, the fixing device for a wheelchair being fixed to a seat frame of a wheelchair, and being vertically expandable and contractible with the fixing support member. A movable support member connected via a simple link, and a manual operation for connecting the movable member to the seat frame and moving the movable support member down by manually moving the movable support member to release the connection with the seat frame side. Operating means, locking means disposed on the movable support member, which is locked by a locking means provided on the floor when the movable support member descends, and which fixes the movable support member to the floor; and It is characterized in that it is provided with a releasing operation means for releasing the fixing of the movable support member to the floor by the locking means by being connected and releasing operation.

[0008] In the wheelchair fixing device according to the present invention,
The manual operation means includes a pair of upper and lower hooking means for the seat frame side, and is attached to a rear end portion of the movable support member so as to be rotatable in a vertical direction. The locking state of the fixed support member by the locking means is released, and the upper and lower pivoting operations selectively use the both locking means to move the seat frame side upward or downward. It is preferable to adopt a configuration in which it is locked at the moving position.

In the wheelchair fixing device according to the present invention, the lower part of the front end on the seat frame side is locked by a second locking means provided on the floor to restrict the vertical movement of the wheelchair. It is preferable to provide a restricting means.

[0010]

In the wheelchair fixing device according to the present invention, the movable supporting member is disengaged from the seat frame side by the manual operation means and is moved downward to be fixed on the floor via the locking means. Thus, the wheelchair can be fixed on the same floor. Further, in order to release the fixed state of the wheelchair fixed on the floor, the fixing operation of the movable support member to the floor is released by the release operation means, and the movable support member is moved upward by the manual operation means to release the seat frame side. Connect to Thus, the wheelchair is released from being fixed to the floor.

In the wheelchair fixing device according to the present invention, the fixing and releasing of the fixing to the floor are performed by the manual operation of the manual operating means. For example, the wheelchair can be fixed and released from a back door (rear opening) side of the vehicle, and a wheelchair can be easily fixed and released in, for example, a compartment having a low interior height where a stepping operation is impossible.

In the wheelchair fixing device according to the present invention,
The manual operation means is provided with a pair of upper and lower locking means for the seat frame side, and is assembled to the rear end of the movable support member so as to be rotatable in the vertical direction. A structure in which the latching state with respect to the frame side is released, and the latching means is selectively moved up and forward with respect to the seat frame side by using the both latching means at an upper position or a lower position. can do.

In this case, if the movable support member is fixed on the floor, the manual operation means is rotated upward and forward so as to be connected to the seat frame by the lower hook means. The movable support member is slightly lifted while being fixed on the floor, so that the fixed state with respect to the floor can be strengthened. For this reason, it is sufficient to fix the wheelchair at two places on the left and right sides with respect to the floor in order to restrict the run-out while the wheelchair is fixed on the frame, and the number of lock means provided can be reduced.

In the wheelchair fixing device according to the present invention, a restraining means for restraining a vertical movement of the wheelchair by being hooked on a second hooking means provided on the floor is provided below the front end on the seat frame side. Can be provided. With this, if the lower end of the front end on the seat frame side is regulated in the vertical direction with respect to the floor by the regulating means prior to the fixing operation of the movable support member to the floor, the front part of the wheelchair does not rise. Further, the movable support member can be fixed on the floor by the lock means, and the wheelchair can be securely fixed on the frame.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 schematically show a wheelchair equipped with a fixing device according to the present invention, and FIG. Shows a front portion of the wheelchair, and FIG. 4 shows an operation state of a manual operating means constituting the fixing device. The wheelchair includes a frame body mainly composed of a seat frame 11 and a back frame 12, a pair of right and left rear wheels 21,
A fixing device 30 according to the present invention includes a pair of left and right front wheels 22, a seat 23, and a backrest 24, and is disposed below the seat frame 11. The seat 2 in the wheelchair
The portion excluding the backrest 3 and the backrest portion 24 and the portion excluding the manual operation means in the fixing device 30 are basically proposed in Japanese Patent Application Laid-Open No. 6-181950, filed by the applicant of the present invention. It is configured similarly to a wheelchair and a fixing device.

[0016] Seat frame 1 constituting the frame body
Reference numeral 1 denotes an upper and lower frame-shaped frame portions 11a and 11b connected to each other, and a back frame 12 comprises a pair of left and right frame portions 12a and 12b. It is fixed to the left and right, slightly inclines backward, and extends upward a predetermined length. At the upper ends of the frame parts 12a, 12b, grip parts 12c, 12d extending rearward are integrally formed. In the wheelchair, a seat portion 23 is stretched between the left and right frame portions 11a, and the two frame portions 12a, 1
A backrest portion 24 is stretched between 2b. Each rear wheel 21
Are supported at the left and right rear ends of the back frame 12, and the front wheels 22 are supported at the left and right front ends of the frame 11. A pair of footrests 13a and 13b are provided at the left and right front ends of the seat frame 11.

The fixing device 30 includes a pair of left and right first links 3.
1a and the second link 31b, a fixed support member 32, a movable support member 33, a pair of left and right side locking means 34, a regulating plate 35 having front locking means, a rotating frame body 36 which is a manual operation means, a release operation means 37 It has.

The fixed support member 32 is provided on the seat frame 11.
Presents a frame shape corresponding to both frame portions 11a and 11b,
The two frame portions 11 are fixed to the seat frame 11.
a, 11b. The side frame portion 32a of the fixed support member 32 is provided with a guide groove 32b extending a predetermined length in the front-rear direction at a portion near the front thereof. The movable support member 33 has the same frame shape as the fixed support member 32, and the side frame portion 33 a has a guide groove 33 b extending a predetermined length in the front-rear direction at a position near the front thereof.
Is provided. The movable support member 33 includes the two links 31.
a and 31b are connected to the fixed support member 32.

The first link 31a is connected at its rear end to the rear end of the side frame portion 32a of the fixed support member 32 so as to be rotatable in the vertical direction, and at its front end, to the side frame of the movable support member 33. The guide groove 33 is provided in the portion 33a.
b is connected rotatably in the up-down direction via a connecting pin slidably inserted in the front-rear direction. 2nd link 31
b is connected at the rear end thereof to the rear end of the side frame portion 33a of the movable support member 33 so as to be vertically rotatable,
At its front end, the side frame portion 3 of the fixed support member 32
2a is connected to the guide groove 32b via a connecting pin slidably inserted in the front-rear direction so as to be rotatable in the vertical direction.

As a result, the movable support member 33 is connected to the fixed support member 32 via the links 31a and 31b so as to be movable in the up-down direction, and is always moved by a hydraulic damper (not shown) disposed between the movable support member 33 and the fixed support member 32. It is urged upward and is in the up position. The movable support member 33 is provided with left and right side covers 33c, and always covers the side frame portion 33a of the movable support member 33 from the outside. The side frame portion 32a of the member 32 is also covered from the outside.

In the wheelchair, each side cover 3
Left and right side lock means 34 are provided in 3c, a regulating plate 35 provided with a front locking means is provided at the front end of the seat frame 11, and manual operation means is provided at the rear end of the movable support member 33. A rotating frame 36 is provided, and
A release operation means 37 is provided at the upper end of the back frame 12. At the front end of the movable support member 33, a support arm 38 is provided.

The side lock means 34 and the release operation means 37 are themselves disclosed in Japanese Unexamined Patent Publication No.
It is a known one proposed in Japanese Patent Publication No. 181950. The side lock means 34 is provided outside each side cover 33c constituting the movable support member 33, and includes a hook 34c which is detachably hooked to the striker 34b in the case 34a. It is hooked on the striker 34b inserted in the insertion hole. This hanging state
It is released by a release operation by the release operation means 37. The release operation means 37 is provided on the frame 1 of the back frame 12.
An operation lever 37a disposed on the grips 12c and 12d located at the tip of 2b, and an operation wire 37b for connecting the operation lever 37a to a latch for locking the hook 34c of the side lock means 34, and release by the operation lever 37a The hook 34c is rotated by the operation,
The hooking state of the striker 34b of c is released.

The regulating plate 35 includes a plate body 35a.
At the center of the left and right, a hook projection 3 serving as a front hook means
5b, the locking projection 35 of the regulating plate 35
b projects slightly upward and forward. The hooking projection 35b is hooked on a second striker 35c provided on the floor. The second striker 35c is a striker 34
b (first striker) by a predetermined amount.

The rotating frame 36 is a manual operating means having a U-shaped frame shape, and is rotatably connected to the rear end of the movable support member 33 at both ends. This rotating frame 36
A pair of upper and lower hooking means is provided between the fixed support member 32. The upper hooking means is constituted by a hooking portion 32c protruding from the side frame portion 32a of the fixed support member 32, and a first hooking portion 36a provided on the upper part of the rotating frame 36. The stopping means includes a hook 32c protruding from the side frame 32a of the fixed support member 32 and a second hook 36b provided below the rotating frame 36.

In this connected state, the rotating frame 36 is
As shown in (a) to (c) of FIG. 7, the robot can be turned down rearward and downward, and can be turned up and forward to stand up. In the state in which the rotating frame 36 is raised, as shown in FIG. 4A, the second hooked portion 36b is hooked on the hooking portion 32c to hold the movable support member 33 in the upward movement position. And, as shown in FIG.
6a can be hooked on the hook 32c, and the movable support member 33 can be held in a slightly floating state at the lower movement position. Further, in a state where the rotating frame body 36 is laid down, FIG.
As shown in (b), the movable support member 33 can be moved to the lower movement position and locked by the side lock means 34.

The support arm 38 has a U-shaped frame shape, and is connected to the front end of the movable support member 33 at both ends. In this connection state, the support arm 38
Protrudes a predetermined length forward in series with the movable support member 33 in the same line.

In the wheelchair fixing device thus constructed, when the wheelchair is in a non-fixed state, the rotating frame 3
6 is in an upright state, and as shown in FIG.
The hooked portion 36b is hooked on the hooking portion 32c, and holds the movable support member 33 at the upward movement position.

In order to fix the wheelchair in this state on a predetermined floor (floor on which the first and second strikers 34b and 35c are disposed), the wheelchair is moved to a predetermined position on the floor and regulated. The retaining projection 35b of the plate 35 is
Hooking on the striker 35c, and then operating the release lever 32d provided on the hook 32c to release the connection of the rotating frame 36 to the fixed support member 32, and move the rotating frame 36 backward and downward. Rotate to make it fall down. In this state, the movable support member 33 moves downward as shown in FIG. 4B, and locks the side lock means 34 on the first striker 34b. Thereafter, the rotating frame 36 is rotated upward and forward to stand up, the first hooked portion 36a is hooked on the hooking portion 32c, and the turning frame 36 is held upright.

In this upright state, the lower end of the rotating frame 36 projects downward, and the movable support member 33 is lifted with the front end of the support arm 38 as a base point. Thus, the movable support member 33 is supported on the floor without rattling, and the wheelchair is fixed without swinging on the floor.

In order to release the fixed state of the wheelchair in this state, the connection of the rotating frame 36 to the fixed support member 32 is released by operating the release lever 32d provided on the hook 32c, and the rotation is performed. While rotating the frame body 36 backward and downward, the operation lever 37a of the release operation means 37 is operated to unlock the movable support member 33 by the side lock means 34. Thereafter, the rotating frame body 36 is rotated upward and forward to be in the upright state, and the second hooked portion 36
The rotating frame 36 is connected to the fixed support member 32 by retaining the b in the retaining portion 32c, and the standing state is maintained.

As described above, in the wheelchair fixing device, the wheelchair is fixed to and released from the floor.
Since the turning operation is performed by the manual turning operation of the turning frame 36, the fixing and the releasing operation of the wheelchair can be performed from the outside of the vehicle compartment, for example, through the rear opening of the vehicle, and the stepping operation is impossible. For example, it is possible to easily perform a fixing operation and a fixing releasing operation of a wheelchair in a vehicle compartment having a low interior height.

In the wheelchair fixing device,
Locking means (first and second hooked portions 36a, 36) for locking the rotating frame 36, which is a manual operating means, to the fixed support member 32 side.
b), a pair of upper and lower parts are provided, and the locking state of the locking support member 32 by the locking means is released by the backward and downward rotation operation, and the both locking means is selectively selected by the upward and forward rotation operation. It is configured to be used at the upper movement position or the lower movement position with respect to the fixed support member 32 side.

For this reason, with the movable supporting member 33 fixed on the floor, the rotating frame 36 is rotated upward and forward, and the upper latching means (the first latched portion 36)
By connecting the movable support member 33 to the fixed support member 32 side in a), the movable support member 33 is slightly lifted rearward while being fixed on the floor, and the fixed state to the floor can be strengthened. For this reason, it is sufficient to fix the wheelchair at two places on the left and right sides with respect to the floor in order to restrict the run-out while the wheelchair is fixed on the frame, and the number of lock means provided can be reduced.

Further, in the wheelchair fixing device, a second portion provided on the floor is provided below the front end on the seat frame 11 side.
A locking projection 35b is provided to lock the striker 35c to restrict the vertical movement of the wheelchair. Accordingly, if the vertical movement of the lower portion of the front end on the seat frame 11 side with respect to the floor is regulated by the latching projection 35b prior to the operation of fixing the movable support member 33 to the floor, the front portion of the wheelchair rises. Without locking, the side lock means 34
, The movable support member 33 can be fixed on the floor, and the wheelchair can be fixed on the frame smoothly and reliably.

[Brief description of the drawings]

FIG. 1 is a perspective view of a wheelchair provided with a fixing device according to an example of the present invention as viewed from the back.

FIG. 2 is a schematic side view of the wheelchair.

FIG. 3 is a partial perspective view (a) showing a front portion of the wheelchair, and a vertical sectional side view (b) along the line bb in FIG.

FIG. 4 is a side view showing an operation state of the fixing device;
(C).

[Explanation of symbols]

11: sheet frame, 11a, 11b: frame part,
12 ... back frame, 12a, 12b ... frame part,
12c, 12d: gripping portion, 13a, 13b: footrest, 21: rear wheel, 22: front wheel, 23: seat portion, 24: backrest portion, 30: fixing device, 31a: first link, 31b
... Second link, 32 ... Fixed support member, 32a ... Side frame part, 32b ... Guide groove, 32c ... Hook part, 32d
... release lever, 33 ... movable support member, 33a ... side frame part, 33b ... guide groove, 33c ... side cover,
34 ... side lock means, 34a ... case, 34b ... first striker, 34c ... hook, 35 ... regulating plate,
35a: plate body, 35b: latching projection, 35c: second striker, 36: rotating frame, 36a: first latched portion, 36b: second latched portion, 37: release operation means, 37
a: operation lever, 37b: operation wire, 38: support arm.

Claims (3)

[Claims] 1. A fixed support member mounted on a seat frame of a wheelchair, a movable support member connected to the fixed support member via a vertically expandable and contractible link, and the movable member connected to the seat frame side. Manual operation means for releasing the connection with the seat frame side by manual operation and moving the movable support member downward, and disposed on the movable support member and on the floor when the movable support member descends Locking means for locking the movable support member to the floor by locking the provided locking means, and release for releasing the fixing of the movable support member to the floor by the lock means by the release operation connected to the lock means A wheelchair fixing device comprising operating means. 2. The wheelchair fixing device according to claim 1, wherein said manual operation means comprises a pair of upper and lower hooking means for said seat frame side, and is rotatable vertically at a rear end of said movable support member. The locking state of the locking means by the locking means is released by the backward and downward rotation operation, and the both locking means is selectively rotated by the upward and forward rotation operation. A fixing device for a wheelchair, wherein the fixing device is used at an upper position or a lower position with respect to the seat frame side. 3. The wheelchair fixing device according to claim 1, wherein a lower portion of the front end on the seat frame side is hooked by a second hooking means provided on the floor to move the wheelchair up and down. A fixing device for a wheelchair, comprising a regulating means for regulating.