JP2008142572A - Rotation direction regulation mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotation direction regulation mechanism which can regulate the rotation direction of a caster ring. <P>SOLUTION: A shaft 26 is established in the center of the wheelchair 1 lower surface and a roller 27 is formed in the shaft 26. A rail 32, which guides the roller 27, is extended toward the vehicle rear R from a driver's seat position 33 in a car body floor 31 and an opening 41, which forms the guiding starting position of the roller 27, is formed at the rail 32 back end. A caster guiding section 91, which extends in a vehicle back and forth direction, is formed in the both sides part of a rail 32 in the driver's seat position 33. The top face of the caster guiding section 91 forms the tilt surface 92 which becomes high as it goes to an outside edge separated from the inside edge on the rail 32 side and can guide to the inside the rotation direction of the caster ring 14 of the wheelchair 1 by this tilt surface 92. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a turning direction regulating structure for regulating a turning direction of a caster ring provided in a wheelchair.

  In recent years, vehicles using a wheelchair as a driver's seat have been devised.

  That is, a fixed driving seat is not provided at the driver's seat position of the vehicle, and a wheelchair that has been ridden indoors is moved to the driver's seat position, and this wheelchair is used as a driving seat. Thereby, it is comprised so that the seated person of a wheelchair can start a driving | operation, without getting off from a wheelchair.

  However, in such a vehicle, if the caster ring that reverses when the wheelchair moves backward turns to the side, it may interfere with the side of the vehicle.

  This invention is made | formed in view of such a conventional subject, and it aims at providing the turning direction control structure which can control the turning direction of a caster ring.

  In order to solve the above problems, in the turning direction regulating structure according to claim 1 of the present invention, in a vehicle in which an arrangement position of a wheelchair provided with a caster ring that turns during steering is set on a vehicle body floor, An inclined surface that becomes higher as the distance from the center increases is provided on the side portion of the arrangement position, and a caster guide portion that guides the turning direction of the caster ring to the center side of the arrangement position is configured by the inclined surface.

  That is, an inclined surface that increases as the distance from the center of the arrangement position is provided on the side of the arrangement position of the wheelchair, and the turning direction of the caster ring of the wheelchair is the inner side that is the center side of the arrangement position. A caster guide part for guiding to is constructed.

  For this reason, when the wheelchair is moved backward at the arrangement position, the caster ring is reversed, but the turning direction at that time is the inside.

  In the turning direction restricting structure according to claim 2, a rail for guiding a guided portion provided in the wheelchair to guide the wheelchair to the arrangement position is extended to the vehicle body floor, and The caster guide portions were set on both side portions of the positioned rail.

  That is, the inclined surface is provided on both side portions of the rail for guiding the wheelchair, and the inclined surface constitutes a caster guide portion that guides the turning direction of the caster ring of the wheelchair inward.

  For this reason, the turning direction of the left and right caster rings that are reversed when the wheelchair is retracted along the rail is the inside.

  As described above, in the turning direction regulating structure according to claim 1 of the present invention, the turning direction of the caster ring can be restricted by setting the turning direction of the inverted caster ring inward when the wheelchair is retracted. it can.

  Thereby, compared with the case where a caster ring turns to the side, the interference to the side part of a caster ring can be prevented.

  In the turning direction regulating structure according to claim 2, the turning direction of the left and right caster rings that are reversed when the wheelchair is moved backward along the rail can be determined inward.

  Thereby, compared with the case where a left and right caster ring turns to the side, the interference to the side part of each caster ring can be prevented.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a turning direction regulating structure according to the present embodiment, and shows an example in which the turning direction regulating structure is adopted in a one-box car as a vehicle.

  That is, the one-box car includes a rear opening that is opened and closed by a back door, and includes a lifter that gets on and off the wheelchair 1 from the rear opening (not shown). The wheelchair 1 boarded by the lifter is configured to be able to move to the front seat side through a rear space formed by flipping up the rear seat.

  The wheelchair 1 includes an electric type, and the rear rigid rings 12 and 12 fixed to the frame 11 are driven by a motor. At the front part of the frame 11, caster rings 14 and 14 for turning about the shaft center 13 are provided, and the rotation range 15 is indicated by a broken line.

  On the frame 11, strikers 21, 21 having a U-shaped cross section project downward from two places between the rigid rings 12, 12. Further, the front end of the frame 11 is provided with extension portions 22 and 22 extending forward, and rods 23 and 23 extending downward from the extension portions 22 and 22 are provided. Large diameter heads 24, 24 are provided at the lower ends of 23, 23. A shaft 26 that protrudes downward is provided at the center of the lower surface of the frame 11, and a large-diameter roller 27 is rotatably provided at the lower end of the shaft 26 via a bearing. . Thus, the guided portion of the present invention is constituted by the roller 27 provided on the shaft 26.

  On the vehicle body floor 31 of the one-box car, a rail 32 for guiding the roller 27 is extended from the driver seat position 33 as the arrangement position where the wheelchair 1 is arranged toward the vehicle rear R. The rail 32 is composed of a pair of angle members 33 and 33 having an L-shaped cross section that are spaced apart from each other, and the roller 27 is disposed between the standing walls 34 and 34 of the angle members 33 and 33. The roller 27 can be guided along the rail 32.

  The rear end of the rail 32 is open, and an opening 41 that constitutes a guide start position of the roller 27 by the rail 32 is provided. At the rear end of the rail 32 provided with the opening 41, the upright walls 34, 34 of the angle members 33, 33 are configured to be separated from each other, and the opening 41 expands toward the rear end. The roller 27 is configured to be easily entered.

  The rear end portion of the rail 32 is bent in a direction in which the roller 27 started to be guided by the rail 32 is moved to the driver's seat position 33 and thus guided to the right side of the vehicle. On the driver seat position 33 side, a linear portion 52 extending in the vehicle front-rear direction is formed. As a result, an entrance path 53 is formed at the rear end of the rail 32 to guide the roller 27 toward the driver's seat position 33 and thus guide it to the right side of the vehicle and then guide it to the front F of the vehicle.

  A portion of the rail 32 located on the side of the pillar 61 of the one-box car is formed with a first curved portion 63 that is curved toward the vehicle center 62, and the first curved portion 63 allows the roller 27 to be A first offset portion 64 is provided that guides to the vehicle center 62 side as it moves to the driver seat position 33 side. A straight line portion 65 extending in the vehicle front-rear direction is formed on the vehicle front F side from the first curved portion 63.

  Further, a portion of the rail 32 located on the side of the door pocket 72 protruding from the driver's seat side door 71 is formed with a second curved portion 73 that is curved toward the vehicle center 62 side. As a result, a second offset portion 74 is configured to move the roller 27 toward the driver seat position 33 and thus guide the roller 27 toward the vehicle center 62. A straight portion 75 extending in the vehicle front-rear direction is formed on the vehicle front F side from the second curved portion 73, and the front end of the straight portion 75 reaches the driver seat position 33.

  A lock mechanism 81 for fixing the wheelchair 1 guided along the rail 32 is provided in the vehicle front F from the rail 32. The lock mechanism 81 is provided on the base 83 of the fixing device 82, and engaging claws 84, 84 that engage with the strikers 21, 21 of the wheelchair 1 are raised on both sides of the base 83. . The lock mechanism 81 is provided with latches 85 and 85 for detachably engaging the rods 23 and 23 of the wheelchair 1, and the latches 85 and 85 are connected to a console via a cable 86. The release lever 88 of the box 87 is connected. As a result, when the rods 23 and 23 enter the latches 85 and 85, the latches 85 and 85 automatically lock the rods 23 and 23, while when the release lever 88 is manually operated. The rods 23 and 23 are unlocked by the latches 85 and 85.

  Caster guide portions 91, 91 extending in the vehicle front-rear direction along the rail 32 are provided on both sides of the rail 32 at the driver seat position 33 where the lock mechanism 81 is provided. The caster guide portions 91, 91 are formed in a plate shape, and the upper surface of the caster guide portions 91, 91 forms an inclined surface 92 that increases from the inner edge on the rail 32 side toward the outer edge farther from the inner edge. The inclined surfaces 92 and 92 are configured so that the turning direction of the caster rings 14 and 14 of the wheelchair 1 can be guided inward.

  In the present embodiment according to the above configuration, when the wheelchair 1 riding in the rear space of the one-box car is moved to the driver's seat position 33, the roller 27 provided on the wheelchair 1 is moved to the rail 32 of the vehicle body floor 31. The wheelchair 1 is moved along the rail 32 while being aligned with the opening 41 at the rear end. Then, since the roller 27 is guided along the rail 32, the wheelchair 1 is guided to the driver seat position 33.

  Thus, the wheelchair 1 can be reliably guided to the driver seat position 33 only by moving the wheelchair 1 along the rail 32. For this reason, compared with the case where the wheelchair 1 must be operated and moved to the driver's seat position 33, the wheelchair 1 can be easily aligned. Therefore, even if the vehicle is narrow in the passenger compartment, problems caused by alignment can be solved.

  Moreover, when the roller 27 of the wheelchair 1 passes the approach path | route part 53 set to the rail 32, the wheelchair 1 is once moved to the right. At this time, the rolling direction of the caster rings 14 and 14 provided in the wheelchair 1 is directed rightward. Thereafter, since the wheelchair 1 is moved toward the vehicle front F, the rolling direction of the caster rings 14 and 14 is directed toward the vehicle front F.

  Thus, since the rolling direction of the caster rings 14 and 14 of the wheelchair 1 can be once directed to the right and then directed to the vehicle front F, the caster rings 14 and 14 are always directed to the vehicle front F. It can be fixed to the driver's seat position 33 in the state of being.

  Further, when the roller 27 of the wheelchair 1 passes through the first offset portion 64 of the rail 32, the wheelchair 1 is guided to the vehicle center 62 side, and interference with the pillar 61 is prevented. Further, when the roller 27 of the wheelchair 1 passes through the second offset portion 74 of the rail 32, the wheelchair 1 is further guided to the vehicle center 62 side, so that the door pocket 72 protruding from the driver seat side door 71 and Interference is prevented.

  Thus, since the interference with the pillar 61 of the wheelchair 1 and the interference with the door pocket 72 can be prevented, the damage prevention effect can be obtained, and the ease of movement can be enhanced.

  In addition, caster guide portions 91 and 91 extending in the vehicle front-rear direction are provided on both sides of the rail 32 that guides the wheelchair 1, and the upper surfaces of the caster guide portions 91 and 91 are on the rail 32 side. An inclined surface 92 that becomes higher as it goes from the inner edge toward the outer edge is formed, and the turning direction of the caster rings 14 and 14 of the wheelchair 1 is guided inward.

  For this reason, when the wheelchair 1 moves backward toward the vehicle rear R side, the turning direction of the caster rings 14 and 14 to be reversed can be determined inside the shaft center 13. Thereby, compared with the case where the caster rings 14 and 14 are swung to the outside about the shaft center 13, it is possible to prevent the caster rings 14 and 14 from interfering with the door pocket 72 and the console box 87.

It is a partially transparent figure which shows the plane of one embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wheelchair 14 Caster ring 27 Roller 31 Car body floor 32 Rail 33 Driver's seat position 41 Opening 53 Entrance route 61 Pillar 62 Vehicle center 64 1st offset part 71 Driver's seat side door 72 Door pocket 74 2nd offset part 91 Caster guide part 92 Inclined surface

Claims (2)

In a vehicle in which the position of a wheelchair equipped with a caster ring that turns during steering is set on the vehicle body floor,
An inclined surface that becomes higher as it is away from the center of the arrangement position is provided on a side portion of the arrangement position, and a caster guide portion that guides the turning direction of the caster ring to the center side of the arrangement position is configured by the inclined surface. Characteristic turning direction regulation structure. While extending a rail that guides the guided portion provided in the wheelchair and guides the wheelchair to the arrangement position on the vehicle body floor,
The turning direction regulating structure according to claim 1, wherein the caster guide portions are set on both side portions of the rail located at the arrangement position.

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