KR100339292B1 - wheel chair fixing device for moving body - Google Patents

Abstract

It is a problem to be able to support irrespective of the difference in the size of the wheel of a wheelchair and to securely fix it even when subjected to excessive acceleration and deceleration, and to prevent the movement and overturning.

In order to solve the above problems, an outer lever and an inner lever are disposed in the outer cover 3 and the inner cover 5, and the inner plate 7 connected to each lever so as to be rotatable and the outer side hidden in the outer cover in the figure. The plates are placed opposite each other with a gap and enter the wheelchair 120 towards the rear of the gap. Each lever rotates against each other by the drive mechanism, and the inner plate 7 and the outer plate press-fit the wheel S of the wheelchair. On the inner cover, the rear flipping prevention device 110 is mounted, and the stopper portion 113 is in contact with the vertical frame of the wheelchair. Even if the wheelchair attempts to rotate due to the inertia force of the rider due to sudden start and the like while the wheel is supported, the wheelchair is supported by the stopper portion so that it is not flipped over.

Description

Wheel chair fixing device for moving body

The present invention relates to a wheelchair fixing device for a mobile body for supporting a wheelchair used by a physically disabled person on a vehicle, a railroad or a ship.

The present applicant has proposed an apparatus for fixing a wheelchair on a mobile body in Japanese Patent Laid-Open No. 8-230550.

It includes an outer lever installed to enable rotational movement with respect to the fixed side, an inner lever installed to enable rotational movement with respect to the fixed side, an outer plate connected to enable rotational movement to the outer lever, and an inner plate connected to enable rotational movement to the inner lever. And lever driving means for rotating the outer lever and the inner lever in a reverse direction to each other, and the outer plate and the inner plate are disposed to face each other with a gap to allow horizontal access and separation between the outer plate and the inner plate. The limit switch which is pressed by the wheel of the wheelchair which entered into the clearance gap is formed between them, and it is comprised so that the wheel of the wheelchair located in the clearance gap can be crimped | bonded by the outer plate and the inner plate by operation of a limit switch.

A fixing pin unit is formed between the inner plate and the inner lever so that the distance between the inner plate and the inner plate can be changed elastically. The fixing pin unit includes a plurality of fixing pins with a force applied in the protruding direction from the spring. When the inner plate is provided with a pin and a load is applied, the fixing pin passes through the hole formed in the inner plate to protrude toward the opposite surface side of the outer plate.

As a result, the wheels of the wheelchair are pressed against the outer and inner plates so that the wheels can be pressed at any time regardless of the size of the wheels, and the wheels can be squeezed to the surface reliably even if the wheels are placed incorrectly.

Furthermore, since the plurality of fixing pins from the fixing pin unit press the tires or are caught on the wheel rims, the wheels can be adapted to various wheelchairs with significantly different diameters or tire sizes, and the wheelchair movement is assured. Support and restrain.

However, in the wheelchair fixing device, in addition to compressing the wheels with the outer plate and the inner plate, a plurality of fixing pins press the tires and catch the wheel rims to reliably suppress the horizontal movement of the wheelchair. If you forget to apply the wheel brakes in the car, or if the wheel brakes are not working properly, the inertia force acting on the rider sitting on the wheelchair, for example, when the vehicle suddenly starts forward or collided from behind The wheelchair is not without fear of turning around its wheel axle and flipping backwards.

Accordingly, an object of the present invention is to further improve the wheelchair fixing device proposed above to reliably suppress the horizontal movement of the wheelchair, and to provide a wheelchair fixing device for a mobile body that does not have to worry about the wheelchair turning over even when acceleration due to sudden acceleration or the like occurs. It is done.

1 is a top view showing the overall appearance of an embodiment of the present invention.

2 is a side view showing the overall appearance of the embodiment.

3 is a rear view showing the overall appearance of the embodiment;

4 is a perspective view showing a rear flipping device.

Figure 5 is a partially broken plan view showing the rear inversion prevention device removed.

Figure 6 is a side view showing the shape of the guide plate and the outer plate.

7 is a side view showing the shape of the inner plate;

Figure 8 is a top view showing the drive mechanism inside by removing the cover.

Figure 9 is a top view of the drive mechanism inside by removing the cover.

10 is a cross-sectional view showing the wheel detection switch in detail.

11 is a cross-sectional view showing in detail the pin unit for fixing.

12 illustrates operation of the embodiment.

13 is a view showing an operating state of a fixing pin unit.

14 is a view showing an operating state in an inclined position of a wheel;

* Description of the symbols for the main parts of the drawings *

1: base panel 2: guide plate

2A: storage part 3: outer cover

5 inner cover 6 outer plate

7: inner plate 7A: first half

7B: second half 7p: hole

9: outer lever 9A: first arm

9B: second arm 10: inner lever

10A: First Arm 10B: Second Arm

11: Outer lever return spring 12: Base bracket

13: support shaft 15, 16: sprocket shaft

17, 18: chain sprocket 19: main chain

20: fixing pin unit 21: block

21A: first cross section 21B: second cross section

22: through hole 22A: small diameter portion

22B: large diameter 23: fixing pin

24: tip pin portion 25: shaft portion

26: flange 27: pressing plate

28: compression spring 29: countersunk screw

40: manual opening device 41: sprocket

42: end metal ball 43: support pin

44: fixing bracket 50: actuator

51: electric motor 54: driving rod

60: tension adjusting mechanism 69: limit switch

70: fixed side bracket 71: guide sprocket

72: support 73: return chain

74, 75: sprocket 76: rod

77: support shaft 78: return spring

82: bracket 90: fixing bracket

91: fixing member 92: wheel stop plate

93A: long hole 94: support piece

95: pin 96: spring

97: limit switch 97A: contactor

98: contact piece 100: wheel detection switch

110: rear flipping prevention device (turning prevention means) 111: substrate

112 pipe 113 stopper part

114: reinforcing bracket 116: stepped block

117: screw holes 118, 119: notch

120: wheelchair 122: vertical frame

124: armrest frame 126: seat frame

S: Wheel

Accordingly, the present invention according to claim 1 is a wheelchair fixing device for supporting a wheelchair on a movable body, comprising: wheel supporting means for hanging on a wheel of a wheelchair and supporting the wheel on a fixed side; It was supposed to have a flipping prevention means including a stopper portion for preventing rotation of the frame.

In particular, even if the wheelchair is rotated by the inertial force of the occupant on the wheelchair due to excessive acceleration, the stopper part is prevented from being turned over.

Further, the inverting prevention means is constituted by a pipe, one end of which is mounted on the fixed side, and the other end of the pipe can be extended in the transverse direction at a position higher than that of the seat of the wheelchair to form a stopper.

The invention of claim 3 further comprises an outer lever provided so that the wheel support means can rotate with respect to the fixed side, an inner lever provided with a rotatable movement with respect to the fixed side, and an outer plate connected with the outer lever so as to rotate. An inner plate connected to the inner lever for rotational movement, a drive mechanism for rotating the outer lever and the inner lever in a reverse direction to each other, and facing each other with a gap to allow the outer plate and the inner plate to be horizontally approached and separated from each other; It was supposed that the wheel of the wheelchair placed and positioned in the gap can be crimped by the outer plate and the inner plate.

When the wheel of the wheelchair is placed in the gap to operate the lever driving means, the outer lever and the inner lever rotate in rotation with respect to the fixed side. The outer plate and the inner plate are connected to these levers, respectively, and move in opposite directions to squeeze the wheels from both sides to the surface, so that the wheels can always be pressed regardless of the size of the wheels. In addition, since the outer plate and the inner plate are connected to each lever so as to rotate, the wheels are pressed to the surface accordingly even if the wheels are placed erroneously.

5. The inner pin according to claim 4, wherein the inner plate is further connected to the inner lever through a fixing pin unit provided so that the distance from the inner plate can be changed elastically, and the fixing pin unit protrudes by a spring. And a plurality of fixing pins to which a force was applied, the fixing pin penetrates through the hole formed in the inner plate and protrudes to the opposite surface side of the outer plate when a load is applied to the inner plate.

When the inner plate is further rotated in the pressing direction, the fixing pin unit shortens the distance from the inner plate, and a plurality of fixing pins pass through the holes of the inner plate and protrude to the outer circumferential surface of the inner plate therebetween. As a result, even if excessive acceleration is applied, the fixing pin is engaged with the wheel tire or the rim to support the wheel.

In addition, a cover covering the inner lever and the fixing pin unit may be formed, and the pipe of the anti-overturning means may be mounted to the cover through the bracket.

The invention according to claim 6 further comprises a limit switch that is operated by pressing the wheel of the wheelchair that has entered the gap to a predetermined position between the outer plate and the inner plate. It is assumed that a stepped block almost in contact with the wheel is provided across the driveway on the opposite side with the ground point of.

Even after the wheelchair enters the predetermined position, the wheelchair is prevented by the stepped block even if it tries to return to the repulsive force, so that the operation state of the limit switch can be reliably supported.

The cross section of the stepped block is preferably trapezoidal. As the wheelchair enters a predetermined position, it becomes easier for the wheels to cross the stepped block.

Embodiment

Embodiments of the present invention will be described through examples. 1 is an external top view of an embodiment device, FIG. 2 is a side view, and FIG. 3 is a rear view. On the base panel 1 installed in contact with the floor of the car interior, a guide plate 2 having a wall surface in the longitudinal direction from the center direction is formed, and the outside of the guide plate 2 is covered with an outer cover 3. It is.

An inner plate 7 is formed on the inner side opposite to the guide plate 2. The inner plate 7 is connected to an inner lever 10 not shown through a fixing pin unit 20 which will be described later, and the fixing pin unit and the inner lever are covered with an inner cover 5.

At the rear end of the base panel 1, the wheel detection switch 100 is provided between the inner cover 5 and the outer cover 3. These are formed in one unit on the base panel 1.

In use, the wheelchair 120 enters the rearward direction, and the right wheel S is positioned between the guide plate 2 and the inner plate 7.

The inner cover 5 is equipped with a rear flipping prevention device 110. As shown in FIG. 4, the rear anti-overturning apparatus 110 includes an angle-shaped substrate 111 fixed to the inner cover 5 and a pipe 112 extending upward from the substrate. It is mounted on the inner cover (5) with bolts. The pipe 112 has a stopper portion 113 extending upwardly outward from the top after the upper portion thereof is inclined in the forward direction. In particular, as shown in FIGS. 2 and 3, the stopper portion 113 is a wheelchair ( The position is higher than the armrest frame 124 of the vertical frame 122 of 120. The reinforcing bracket 114 is welded between the pipe 112 and the substrate 111 to prevent the pipe 112 from falling over.

On the base panel 1 of the space sandwiched between the inner cover 5 and the outer cover 3, the rear side is in a close position that almost touches the front side of the wheel S at a prescribed position in contact with the wheel detection switch 100. The step block 116 extended in the horizontal (left and right) direction is provided. The step block 116 has an almost trapezoidal cross section.

In order to cope with wheelchairs having different wheel sizes, the base panel 1 is provided with a screw hole 117 for mounting a step block in various places in the front-rear direction.

FIG. 5 is a plan view showing the rear flipping prevention device 110 removed and partially broken out of the outer cover 3 and the inner cover 5. A part of the guide plate 2 is concave to form the storage portion 2A, and the guide plate 2 is formed so that the outer plate 6 can be stored.

The inner plate 7 is connected to the fixing pin unit 20, and the inner lever 10 is fixed to the fixing pin unit 20 to operate the pair of the inner plate 7 and the fixing pin unit 20. It is connected by pin.

6 and 7 show the shapes of the guide plate 2, the outer plate 6 and the inner plate 7 with the A and B arrows in FIG. 5, respectively.

The guide plate 2 has a long quadrilateral shape, and the outer plate 6 is a quadrilateral having an upper edge of a height slightly lower than the top cover 3 surface. In addition, as shown in FIG. 5, when the outer plate 6 is stored, the outer plate 6 is in the state entered more than the general surface of the guide plate 2.

The inner plate 7 has a height at which the rear half 7B is almost equal to the outer plate 6, and the front half 7A is formed lower than the rear half 7B. In the second half portion 7B, the fixing pin unit 20 described above is disposed on the rear surface, and a plurality of holes 7p through which the fixing pins 23 arranged in a plurality of stages are penetrated are formed. . And the front end is opened smoothly in the direction away from the guide plate 2, as shown to FIG. 1, FIG.

In addition, the notch 119 is formed in the lower edge of the front part 7A of the inner plate 7 in order to avoid interference with the step block 116 when the inner plate is displaced in the horizontal direction.

The notch 118 is formed in the lower edge of the outer plate 6 similarly to avoid the interference with the step block 116.

The inner lever 10 and the outer lever 9 are supported to rotate on the support shafts 13 fixed to the base panel 1 in the downward direction of the wheel detection switch 100, respectively.

8 and 9 are internal plan views showing the inside of the upper cover 3, 5 and the wheel detection switch 100 removed, and show a drive mechanism for rotating the outer lever 9 and the inner lever 10. As shown in FIG. Details of the drive mechanism will be cited in Japanese Patent Laid-Open No. 8-230550. In Japanese Patent Laid-Open No. 8-230550, the drive mechanism includes an actuator, a tension adjustment mechanism, a tension load mechanism, and the like.

The inner lever 10 and the outer lever 9 are formed in the lower direction of the wheel detection switch 100 so as to be rotatable on the support shaft 13 of the base bracket 12 fixed to the base panel 1, respectively. have.

The inner lever 10 has a first arm 10A connected to the fixing pin unit 20 and a second arm 10B having a sprocket shaft 16 at an end thereof and has a U-shaped plane shape. .

The outer lever 9 has a substantially T-shape plane shape and is supported by the support shaft 13 with one end of the first arm 9A having a regular shape, and has a sprocket shaft 15 at the other end thereof. At the same time, an end portion of the second arm 9B extending from the middle of the first arm 9A is pinned to the outer plate 6.

An outer lever return spring 11 is formed between the outer lever 9 and the fixed side, and a force is applied to the outer lever 9 in the right turn (open direction) in the drawing.

At the end of the base panel 1, a manual opening device 40 is provided.

The sprocket shaft 15 of the outer lever 9 and the sprocket shaft 16 of the inner lever 10 are supported so that the chain sprockets 17 and 18 can rotate, respectively, and the actuator 50 is connected to these chain sprockets. The main chain 19 which is driven by is wound up. One end of the main chain 19 is connected to the manual opening device 40, and the other end thereof is connected to the actuator 50 via the tension adjusting mechanism 60. The actuator 50 converts the rotation of the electric motor 51 and outputs it as a linear stroke of the drive rod 54.

As shown in FIG. 8, the main chain 19 first passes through a guide sprocket 71 fixed to the fixed shaft bracket 70 on the side of the base panel 1, and then the chain sprocket 17 of the outer lever 9. Reversed to guide the chain sprocket 18 of the inner lever 10. It is again bent here to enter the manual opening device 40, and is turned in the transverse direction via the sprocket 41 so that the end metal ball 42 is fixed to the fixing bracket 44 by the support pin 43. The support pin 43 can be pulled out upwards.

In addition to the main chain 19, a return chain 73 is formed. One end of the return chain 73 is connected to the member of the tension adjusting mechanism 60, is inverted by the sprocket 74, and then almost again by the sprocket 75 supported by the sprocket shaft 16 of the inner lever 10. The other end is connected to the rod 76 which is inverted and fixed to the support piece 72 extended from the fixed side bracket 70 supporting the guide sprocket 71.

On the other hand, the return spring 78 is caught by the bracket 82 which supports the support shaft 77 of the sprocket 74, and the tension is given to the return chain 73 wound by the sprocket 74. As shown in FIG.

The sprocket 74 exerted by this return spring 78 constitutes a tension load port.

Details of the drive mechanism for rotating the outer lever 9 and the inner lever 10, in particular the tension adjusting mechanism and the tension loading mechanism, are described in Japanese Patent Laid-Open No. 8-230550.

10 is a cross-sectional view showing the wheel detection switch 100 in detail.

A fixing member 91 is attached to the fixing bracket 90 on the base panel 1, and the wheel stopping plate 92 is formed by being elastically supported by the fixing member 91. The wheel stop plate 92 is installed so that its top face is inclined rearward and its plate face is upwardly upward, and has a catching piece 93 having a long hole 93A extending at right angles with respect to the plate face on the back face. do.

In the fixing member 91, the support piece 94 provided with the pin 95 extends, and the spring 96 is provided between the plate surface and the fixing member while the pin 95 is caught in the long hole 93A of the locking piece. Is arranged and the posture of the wheel stop plate 92 is maintained.

Thus, when a predetermined force is applied to the wheel stop plate 92, the pin 95 is displaced while being guided to the long hole 93A of the locking piece.

The fixing member 91 is again provided with a limit switch 97, and the wheel stop plate 92 is in contact with the contact member 97A of the limit switch 97 when it is displaced, and a contact piece 98 for operating the switch. ) Is formed.

The limit switch 97 is connected to a controller (not shown), and an indicator lamp (not shown) is likewise connected to the controller so that the indicator lamp is turned on when the limit switch 97 is operated. The indicator lamp is placed in the vicinity of a unit that is easy for the operator to see, or in the driver's seat.

As an operation switch, the controller is further connected with a "wheel chair fixed" switch (not shown) and a "wheel chair open" switch, and the electric motor of the actuator 50 is controlled in accordance with the state of these switches.

11 is a view showing the fixing pin unit 20 in detail. Multi-stage repetitive through-holes 22 are formed in the block 21, and fixing pins 23 are inserted into the through-holes 22, respectively. Each stage has a position different from the upper and lower adjacent stages, and each of the through holes 22 is arranged in a cross shape. The fixing pin 23 consists of the tip pin part 24, the shaft part 25, and the flange 26. As shown in FIG.

The through hole 22 is a small diameter portion 22A and a flange 26 which support the shaft portion 25 so as to be slidable in order in the axial direction on the side of the first end face 21A facing the guide plate 2 direction. ) Has a large diameter portion 22B. The opening of the large diameter portion 22B is covered with a pressing plate 27 to the second end face 21B on the opposite side, and a compression spring 28 is formed between the fixing pin 23 and the pressing plate 27 in the large diameter portion. The fixing pin 23 presses the flange 26 against the shoulder of the small diameter portion 22A, and a force is applied so that the tip pin portion 24 protrudes from the first end surface 21A.

The inner plate 7 described above is positioned so as to be parallel to the first end face 21A, and the inner plate 7 is provided with a hole 7p for penetrating these tip pin portions 24 corresponding to the fixing pin 23. It is. In the normal state, the distal end surface of the distal pin portion 24 is aligned with the outer surface of the inner plate 7.

In addition, among the fixing pins 23 forming the group of the multi-stage repetition, the three to four pins 23n positioned at the periphery thereof have their tip portions shortened by the thickness of the inner plate 7, In the position corresponding to these of the plate 7, a screw insertion through hole 7n is formed in place of the hole 7p, and the pin 23n and the inner plate 7 are fixed by the countersunk screw 29. .

Thus, in the no-load state, the block 21 and the inner plate 7 of the fixing pin unit maintain a predetermined gap. When the load is applied to the inner plate 7, the block 21 and the inner plate 7 approach each other. The tip pin portion 24 of the fixing pin protrudes from the outer surface of the inner plate 7.

In the present embodiment, a configuration in which the outer lever and the inner lever rotate in opposite directions to each other so as to compress the wheels by the outer plate and the inner plate, including a driving mechanism corresponds to the wheel supporting means in the present invention.

Moreover, the rear flipping prevention apparatus which installed the stopper part 113 so that the frame of a wheelchair can contact is comprised by the flipping prevention means of this invention.

Next, the operation of the device of the present embodiment installed on the floor of the vehicle will be described.

First, as shown by the imaginary line in FIG. 1, FIG. 5 above, the one-sided vehicle S of the wheelchair 120, the wheel stop plate of the rear end from the front side between the guide plate 2 and the inner plate 7 is shown. Enter at (92). In the final stage of entry, the wheel S goes beyond the step block 116 formed on the base panel 1. Since the step block 116 has a trapezoidal cross section, it can be easily passed by applying a slight force to the operation of the wheel.

When the wheel S is in contact with the wheel stop plate 92, the wheel stop plate 92 is displaced against the reaction force of the spring 96 and the limit switch 97 is operated. This causes the indicator lamp to light up to indicate the wheelchair ready state.

At this time, even if the wheelchair is to be returned to the front by the retraction speed of the wheelchair 20 or the repulsive force of the tire or the wheel stop plate 92, the step block 116 is prevented because the step S 116 is located in front of the wheel S. Thus, the wheel S does not fall off the wheel stop plate 92, and thus the limit switch 97 is reliably maintained without returning to the inoperative state immediately.

In this state, the vertical frame 122 of the wheelchair is in contact with the stopper portion 113 at the upper end of the pipe of the rear anti-overturning device 110 or is positioned immediately before the stopper portion with a slight gap.

After this, when the "wheel fixed" switch is pressed, the actuator 50 pulls the main chain 19. 12 shows the operation when the main chain 19 is given tension.

Since the other end of the main chain 19 is fixed with the support pin 43 via the chain sprocket 17 of the outer lever 9 and the chain sprocket 18 of the inner lever 10 being bent, The outer lever 9 and the inner lever 10 are rotated in opposite directions around the support shaft 13 by the tension.

As a result, the outer plate 6 connected to the outer lever 9 abuts on the handle wheel and presses it, and on the opposite side the inner plate 7 supported by the fixing pin unit 20 connected to the inner lever 10. Abuts on the wheel S. As a result, the wheels S including the handle wheels are compressed by the plates 6 and 7.

When the actuator 50 continues to operate and the inner lever 10 rotates again, the fixing pin 23n fixed to the inner plate 7 of the fixing pin unit 20 reduces the compression spring 28. By pressing down, the gap between the block 21 of the fixing pin unit and the inner plate 7 becomes small, and eventually both of them touch.

Fig. 13 shows the operating state of the fixing pin unit 20 at this time.

That is, in the meantime, many fixing pins 23 which are not fixed to the inner plate 7 have their tip pins 24 exiting the holes 7p of the inner plate, and from the outer surface of the inner plate 7. It will protrude. And in the spoke part of the diameter side inside a wheel rim, as shown by U in the figure, the fixing pin 23 protrudes to the longest position which the flange 26 touched the shoulder of the small diameter part 22A. Moreover, the fixing pin which touched a tire etc. stops at the position which pushed in the compression spring 28 so that it might become small, as shown by V. FIG.

Afterwards, the wheel pressing force of the inner plate 7 and the outer plate 6 becomes stronger by operating the actuator 50 only slightly. Here, the limit switch 69 formed in the tension adjusting mechanism 60 is operated to receive the operation signal, and the controller stops the actuator 50. This completes the fixing operation.

As described above, the outer plate 6 is supported by the outer lever 9 and the inner plate 7 is supported by the pins with respect to the inner lever 10 via the fixing pin unit 20, respectively. Therefore, even when the wheel S of the wheelchair enters obliquely between the guide plate 2 and the inner plate 7, the inclined wheels are also pressed onto the surface by both plates 6 and 7 as shown in FIG. 14. . And it also catches by the pin 23 for fixation.

In the fixed state as described above, the wheel S of the wheelchair is sufficiently supported by the frictional force based on the pressing force of the outer and inner plates 6 and 7 with respect to the acceleration in the front and rear or transverse directions generated during normal driving of the vehicle. In addition, even when the wheelchair 120 is about to move due to excessive acceleration in the front-rear direction, a plurality of the pins 23 are fixed to the wheel rims, and at the same time, the inertia force of the passenger Even if the wheelchair 120 attempts to rotate backward, the vertical frame 122 abuts against the stopper portion 113 of the rear flipping prevention device 110 to prevent the rearward flipping.

Next, when opening the wheelchair 120, the "wheel chair opening" switch is pushed. In this way, the controller operates the actuator 50 of the drive mechanism in the reverse direction. When the tension on the main chain 19 is released in this way, the outer lever 9 is opened by the outer lever return spring 11, so that the outer plate 6 is stored in the storage portion 2A.

In addition, the inner lever 10 receives the tension of the return chain 73 from the sprocket 75 and rotates in the opposite direction as when fixed. As a result, the fixing pin unit 20 detaches the block 21 from the inner plate 7 while retracting the fixing pin 23 from the outer side of the inner plate 7, and then the fixing pin unit 20. ) And the inner plate 7 are separated from the wheel S integrally.

This completes the opening operation. After this, the wheel S is free from the guide plate 2 and the inner plate 7 without any obstacle, so that the wheelchair 120 can be retracted.

This embodiment is comprised as mentioned above, The outer lever 9 and the inner lever 10 are moved so that the outer plate 6 and the inner plate 7 may oppose each other, and the wheel S of a wheelchair may be faced. It is provided with a frictional force based on the pressing force, and a fixing pin unit 20 is attached to the inner plate 7 so that a plurality of fixing pins 23 are held by the spring force when the wheel is sandwiched. Since the plurality of fixing pins 23 push the tires or catch the wheel rims so as to protrude from (7), the wheelchair 120 is sufficiently supported against the acceleration or the like generated in normal running.

In addition, the rear flipping prevention device 110 is provided so that the vertical frame 122 of the wheelchair 120 is brought into contact with the stopper portion 113, so that even if the wheel brake is forgotten or is particularly subjected to excessive acceleration, There is no fear that the wheelchair 120 will overturn.

In addition, the stopper portion 113 may be in contact with at least a portion higher than the seat frame 126 of the frame of the wheelchair, but in a portion higher than the armrest frame 124 as in the embodiment in that it can cope with greater acceleration. It is preferable to set it as the height which can be contacted.

In addition, the outer plate 6 and the inner plate 7 can be rotated by supporting the outer lever 9 and the inner lever 10 with pins, respectively, so that the surface compression is always performed even in wheelchairs having different wheel widths. At the same time, even when the wheel of the wheelchair enters the twisted direction, it can be surely kept pressed as it is.

In addition, when the wheel is brought into contact with the wheel stop plate 92 and the limit switch is operated, the wheelchair is returned by the repulsive force of the wheel stop plate. Therefore, the wheel brake is applied when the wheel comes in contact with the wheel stop plate 92. It is necessary, but it is not easy to brake at the right time.

In contrast, in the present embodiment, since the stepped block 116 having a trapezoidal cross section is formed on the front side of the wheel S at the prescribed position in contact with the wheel stop plate 92 on the base panel 1, the wheel After allowing the stop plate 92 to enter, the wheelchair 120 can reliably maintain the operating state of the limit switch without returning to the repulsive force.

In addition, in the embodiment, the drive mechanism disclosed in Japanese Patent Application Laid-Open No. 8-230550 was used to rotate and operate the outer lever 9 and the inner lever 10 to support the wheel S by pressing. The rear inversion preventing device 110 is combined with various wheel fixing devices for preventing and supporting the movement of the wheels without being limited thereto, and the wheelchair can be reliably fixed without being affected by excessive acceleration or the like.

As described above, the present invention includes a wheel supporting means for hanging on the wheel of the wheelchair to support the wheel on the fixed side, and a flipping prevention means having a stopper portion that abuts the frame of the wheelchair and prevents rotation of the frame around the wheel shaft. Since it is a physical wheelchair fixing device, even if the wheelchair is rotated by the inertial force of the rider of the wheelchair under excessive acceleration, the stopper part is blocked. Therefore, the wheelchair does not turn over even when the vehicle is suddenly started or collided from the rear when the wheel brake of the wheelchair is forgotten or when the wheel brake is weakly operated.

Further, by using a pipe mounted at one end of the fixed side and extending the other end of the pipe in a transverse direction at a position higher than the seat of the wheelchair, a stopper portion can be realized with a simple configuration.

In addition, the wheel support means, in particular, has an outer lever and an inner lever formed so as to be rotatable relative to the fixed side, and an outer plate and an inner plate which are connected to each lever so as to be rotatable and spaced apart from each other, By driving each lever in a reverse direction with the driving mechanism, the outer plate and the inner plate are approached horizontally with each other, and the wheels of the wheelchair positioned between them are compressed by the outer plate and the inner plate so that they are always irrelevant to the size of the wheels. The wheels can be pressed, and the wheels can be pressed against the surface accordingly even if the wheels are positioned incorrectly.

Furthermore, the inner plate is laid so that the distance from the inner plate can be changed elastically and at the same time connected to the inner lever through a fixing pin unit having a plurality of fixing pins exerted by the spring in the protruding direction. When the load is applied to the inner plate, the fixing pin passes through the hole formed in the inner plate and protrudes toward the opposite surface side of the outer plate, so that the plurality of fixing pins exit the hole of the inner plate according to the compression of the inner plate, Protruding from the outer surface of the inner plate and caught with the wheel tire or rim, the wheel is reliably supported even if excessive acceleration is applied.

Further, a limit switch can be formed between the outer plate and the inner plate to be pressed by the wheel of the wheelchair that has entered the gap to a predetermined position, and the ground point of the wheel of the wheelchair that has entered the ramp in the gap to the predetermined position. On the opposite side between the two wheels, a stepped block almost in contact with the wheel is installed across the driveway to allow the wheelchair to return to a predetermined position and then be prevented by the stepped block even if the wheelchair tries to return by the repulsive force. Can be.

The cross section of the stepped block has a trapezoidal shape so that the wheel can easily cross the stepped block.

Claims (8)

A wheelchair fixing device for supporting a wheelchair on a movable body, the wheel holding means being supported by a wheel of a wheelchair and supporting the wheel on a fixed side, and a flipper having a stopper that abuts the frame of the wheelchair and prevents rotation of the frame around the wheel shaft. Wheelchair fixing device for moving body characterized in that it has a prevention means. 2. The movement according to claim 1, wherein the anti-overturning means comprises a pipe having one end mounted on the fixed side, and the other end of the pipe extending laterally at a position higher than the seat of the wheelchair to form the stopper portion. Wheelchair fixtures for the body. According to claim 1 or claim 2, wherein the wheel support means is an outer lever provided to rotate about the fixed side, an inner lever installed to enable a rotational movement relative to the fixed side, so as to rotate the outer lever An outer plate connected to the inner plate so as to be rotatable to the inner lever, and a driving mechanism for rotating the outer lever and the inner lever in opposite directions to each other, the outer plate and the inner plate approaching each other horizontally, A device for fixing a wheelchair for a mobile body, characterized in that a gap is arranged so as to face each other so that the wheel of the wheelchair positioned in the gap can be compressed by the outer plate and the inner plate. According to claim 3, wherein the inner plate is connected to the inner lever via a fixing pin unit provided so that the distance to the inner plate can be changed elastically, the fixing pin unit is protruding direction by a spring And a plurality of fixing pins to which a force is applied, the fixing pins being configured to protrude to the opposite surface side of the outer plate through the holes formed in the inner plate when a load is applied to the inner plate. Wheelchair fixtures for the body. 5. A wheelchair fixing apparatus according to claim 4, wherein a cover covering the inner lever and the fixing pin unit is installed, and the pipe of the anti-overturning means is mounted to the cover through a bracket. 4. The limit switch according to claim 3, wherein a limit switch is provided between the outer plate and the inner plate to operate by pressing the wheel of the wheelchair that has entered a predetermined position in the gap, and the access path of the wheelchair of the wheelchair that has entered the predetermined position. On the opposite side with the ground point interposed, a stepped block almost in contact with the wheel is provided across the driveway. 6. The wheelchair fixing device for a movable body according to claim 5, wherein the step block has a trapezoidal cross section. The wheel of the wheelchair of the wheelchair which entered to the said predetermined position is provided between the said outer plate and the inner plate, The limit switch which acts by pressing on the wheel of the wheelchair which entered to the predetermined position in the said gap is provided. On the opposite side with the ground point interposed, a stepped block almost in contact with the wheel is provided across the driveway.