JP6575857B2 - Slope structure - Google Patents

Description

  The present invention relates to a slope structure that assists a wheelchair to get on and off a vehicle entrance.

  Patent Document 1 describes a slope plate that is rotatably attached to a floor surface of a bus entrance using a hinge. The slope plate is folded and stored in the passenger compartment, and is reversed when the wheelchair gets on and off and is laid on the road surface.

JP 2006-137320 A

  The above-described conventional configuration includes a torsion bar as a separate body from the hinge, thereby suppressing rapid rotation of the slope plate when it is bridged on the road surface and reducing the operating force required for storage. For this reason, since the attachment parts of a hinge and a torsion bar are also needed separately, there are many parts and the installation space must be ensured widely.

  Accordingly, an object of the present invention is to provide a slope structure capable of suppressing the rapid rotation of the slope plate and reducing the operation force required for the rotation of the slope plate while reducing the size with a simple structure.

In order to achieve the above object, a first aspect of the present invention is a slope structure for assisting a wheelchair to get on and off a vehicle entrance and exit, and includes a vehicle floor, a slope plate, and a hinge. The slope plate has a landing surface. The hinge rotatably connects the floor surface and the slope plate around a rotation axis extending in the opening width direction of the entrance at the passenger compartment side of the entrance. The rotating shaft is a torque rod that is twisted according to the tilt of the slope plate and biases the slope plate in the anti-twist direction. The hinge has a plurality of first bearings fixed to the floor surface side and a plurality of second bearings fixed to the slope plate side. The plurality of first bearings and the plurality of second bearings form a line so as to mesh with each other alternately. The torque rod is inserted into the plurality of first bearings and the plurality of second bearings, and is not rotatable with respect to one first bearing among the plurality of first bearings and one second bearing among the plurality of second bearings. And is rotatable with respect to the other first bearing and the other second bearing.

  In the above configuration, since the torque rod is used as the rotation shaft, the slope plate can be connected to the vehicle while reducing the size with a simple structure. Even with such a simple structure, rapid rotation of the slope plate can be suppressed, and the operating force required to rotate the slope plate can be reduced.

  The second aspect of the present invention is the slope structure of the first aspect, wherein the slope plate extends from the entrance / exit to the outside of the passenger compartment and spans the road surface, and the unfolding position where the entrance / exit surface is exposed upwardly; It can be set to a retracted position that is reversed from the deployed position around the rotation axis and accommodated in the passenger compartment side of the entrance and exit, with the entrance / exit surface facing downward and facing the floor surface. The torque rod is twisted according to the inclination of the slope plate to the deployed position or the retracted position, and biases the slope plate to the retracted position or the deployed position.

  In the above configuration, when the torque rod is twisted according to the inclination of the slope plate to the storage position, it is necessary to store the slope plate against the urging force of the torque rod. Rotation can be suppressed. Moreover, the urging force by the torque rod stored when the slope plate is stored can be used when the slope plate is bridged on the road surface. Thereby, when the slope plate is bridged on the road surface, the operation force required for the rotation of the slope plate can be reduced.

  On the other hand, when the torque rod is twisted according to the tilt to the deployment position, it is necessary to bridge the slope plate over the road surface against the urging force of the torque rod, so when the slope plate is bridged over the road surface, the slope plate Can be prevented from rotating rapidly. Moreover, the urging | biasing force by the torque rod stored when spanning a slope board over a road surface can be utilized at the time of storing of a slope board. Thereby, the operating force required for rotation of the slope plate can be reduced when the slope plate is stored.

  A third aspect of the present invention is the slope structure of the first aspect, wherein the slope plate extends from the entrance / exit to the outside of the passenger compartment and spans the road surface, and the unfolding position where the entrance / exit surface is exposed upwardly; It can be set to a retracted position that is reversed from the deployed position around the rotation axis and accommodated in the passenger compartment side of the entrance and exit, with the entrance / exit surface facing downward and facing the floor surface. The torque rod is twisted according to each inclination of the slope plate from the neutral position between the deployed position and the retracted position to the deployed position and the retracted position, and biases the slope plate to the neutral position.

  In the above configuration, since it is necessary to store the slope plate against the urging force of the torque rod, it is possible to suppress rapid rotation of the slope plate during storage. Further, the urging force by the torque rod stored when the slope plate is stored can be used when the slope plate is rotated from the storage position in the deployment direction. Thereby, the operation force at the time of lifting up a slope board from a storing position can be reduced.

  Similarly, since it is necessary to bridge the slope plate over the road surface against the urging force of the torque rod, a rapid rotation of the slope plate can be suppressed when the slope plate is bridged over the road surface. Further, the urging force by the torque rod stored when the slope plate is bridged on the road surface can be used when the slope plate is rotated from the deployed position in the retracted direction. Thereby, the operation force at the time of lifting up a slope board from a deployment position can be reduced.

  According to the slope structure of the present invention, it is possible to suppress the rapid rotation of the slope plate and to reduce the operation force required for the rotation of the slope plate while reducing the size with a simple structure.

It is an appearance perspective view of a slope structure concerning an embodiment of the present invention. It is an external appearance perspective view which shows the principal part of the slope structure of FIG. It is a disassembled perspective view of the slope structure of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the front-rear direction means the front-rear direction of the vehicle, and the left-right direction means the left-right direction (the left-right direction along the vehicle width) when facing the front of the vehicle.

  As shown in FIGS. 1 to 3, the vehicle 1 is a route bus that employs a slope structure that assists the getting on / off of a wheelchair with respect to the entrance / exit 30 in the vicinity of the entrance / exit 30 approximately in the center in the front-back direction. The vehicle 1 includes a frame 3 that is fitted and fixed to a floor plate 2 that is notched in a channel shape toward the outside of the vehicle, a receiving plate 4 that is fixed to the frame 3, and a bridge surface 4 that extends from the receiving plate 4. A slope plate 5 having a boarding / alighting surface 5a to be transferred, a hinge 6 for rotatably connecting the receiving plate 4 and one end of the slope plate 5 are provided. The upper surface 4 b of the receiving plate 4 constitutes the floor surface 31 of the vehicle 1 together with the upper surface 2 a of the floor plate 2.

  The frame 3 is made of metal or the like, and extends from the front side of the entrance 30 to the left and right, the middle frame 8 that bends from the vehicle inner end of the front frame 7 and extends rearward, and the rear of the middle frame 8. A rear frame 9 that is bent from the end portion to the vehicle outer side and extends in parallel with the front frame 7 is integrally formed.

  The front frame 7 has a front inclined surface 7a that is inclined downward from the front toward the rear. The middle frame 8 has a middle inclined surface 8a that slopes downward from the vehicle inner side toward the vehicle outer side. The rear frame 9 has a rear inclined surface 9a that is inclined downward from the rear toward the front. Each inclined surface 7 a, 8 a, 9 a constitutes a slope between the floor plate 2 and the receiving plate 4.

  The receiving plate 4 is composed of a plurality of long plates extending in the front-rear direction arranged in the left-right direction, and has a rectangular shape surrounded by the frame body 3. The receiving plate 4 is set lower than the floor plate 2 by the thickness of the slope plate 5 in consideration of storing the slope plate 5. The receiving plate 4 forms a floor surface 31 when the slope plate 5 is used (when deployed), and faces the entrance / exit surface 5a of the slope plate 5 when the slope plate 5 is stored.

  Between the front end portion of the receiving plate 4 and the front frame 7 and between the rear end portion of the receiving plate 4 and the rear frame 9, a pair of front and rear grooves 4a each extending linearly in the left-right direction is formed. ing. When the slope plate 5 is stored, a fall prevention wall 5c, which will be described later, of the slope plate 5 is inserted into the front and rear grooves 4a.

  The slope plate 5 can be set at a deployment position (position shown in FIG. 1) and a storage position (not shown). The slope plate 5 in the unfolded position extends from the entrance / exit 30 to the outside of the passenger compartment and is bridged on the road surface 32, so that the entrance / exit surface 5a is exposed upward. The slope plate 5 in the retracted position is reversed from the deployed position around the rotation axis (rotation shafts 19 and 20 and torque rod 21) of the hinge 6 and is accommodated in the passenger compartment side of the entrance / exit 30 and the entrance / exit surface 5a faces downward. It faces and faces the receiving plate 4. The slope plate 5 is composed of a plurality of elongated plates arranged in the left-right direction and extending in the front-rear direction, and has a rectangular shape that overlaps the receiving plate 4 and is surrounded by the frame 3 at the storage position. One surface (upper surface at the unfolded position) of the slope plate 5 constitutes a landing surface 5a, and the other surface (lower surface at the unfolded position) not shown is substantially flush with the upper surface 2a of the floor plate 2 at the retracted position. It is continuous. Further, the slope plate 5 has a pair of front and rear fall prevention walls 5c that stand up from both sides of the front and rear surfaces 5a and extend in the left-right direction. The front and rear fall prevention walls 5 c prevent the wheelchair from falling from the slope plate 5. The slope plate 5 is rotatably connected to the vehicle 1 by a hinge 6, is unfolded when used, is bridged from the floor surface 31 to the road surface 32, is folded when stored, and overlaps the receiving plate 4 from above.

  The hinge 6 includes a plurality of receiving plate side bearings 10, 11, 12, and 13, a plurality of slope plate side bearings 14, 15, 16, 17, and 18, a pair of front and rear end shafts 19 and 20, and a rotating shaft. Torque rod 21 and the like. The hinge 6 connects the receiving plate 4 and the slope plate 5 so as to be rotatable about the front and rear end shafts 19 and 20 and the intermediate torque rod 21.

  The plurality of bearing plate side bearings 10 to 13 are cylindrical bodies through which the torque rods 21 are inserted. The plurality of bearing plate side bearings 10 to 13 are arranged in the front-rear direction at intervals, and are fixed to the end portion of the backing plate 4 on the vehicle outer side.

  The plurality of slope plate side bearings 14 and 18 are cylindrical bodies into which the end shafts 19 and 20 are inserted so as not to rotate. The plurality of slope plate side bearings 15 to 17 are cylindrical bodies through which the torque rods 21 are inserted. The plurality of slope plate side bearings 14 to 18 are arranged in the front-rear direction at intervals, and are fixed to the end portion of the slope plate 5 on the receiving plate 4 side.

  The plurality of bearing plate side bearings 10 to 13 and the plurality of slope plate side bearings 14 to 18 are arranged in a row so as to be alternately engaged with each other in the opening width direction (front-rear direction) of the entrance / exit 30 on the vehicle interior side of the entrance / exit 30. A rotating shaft portion is formed, and the torque rod 21 extends in the opening width direction.

  One end of the end shaft 19 is inserted into the slope plate side bearing 14 so as not to rotate, and the other end is inserted into the receiving plate side bearing 10 so as to be rotatable. One end of the end shaft 20 is inserted into the slope plate side bearing 18 so as not to rotate, and the other end thereof is inserted into the receiving plate side bearing 13 so as to be rotatable.

  The torque rod 21 is inserted through the plurality of receiving plate side bearings 10 to 13 and the plurality of slope plate side bearings 15 to 17. This torque rod 21 is fixed to one receiving plate side bearing (for example, the receiving plate side bearing 10) among the plurality of receiving plate side bearings 10 to 13 so as not to rotate, and the remaining receiving plate side bearings (for example, The support plate side bearings 11 to 13) are rotatable. Further, the torque rod 21 is fixed to one slope plate side bearing (for example, the slope plate side bearing 17) among the plurality of slope plate side bearings 15 to 17 so as not to rotate, and the remaining slope plate side bearings (for example, The slope plate bearings 15 and 16) are rotatable.

  In addition, the torque rod 21 is set in a neutral position between the retracted position where the slope plate 5 is stored in the frame 3 and the unfolded position spanned from the vehicle 1 to the road surface 32. The plate side bearing (for example, the receiving plate side bearing 10) and one slope plate side bearing (for example, the slope plate side bearing 17) are fixed so as not to rotate. It is optional to set the neutral position between the retracted position and the deployed position, but the neutral position of the present embodiment is set to a position where the slope plate 5 stands substantially vertically.

  Such a torque rod 21 is twisted according to the inclination of the slope plate 5 and biases the slope plate 5 in the anti-twist direction. That is, when the slope plate 5 is in a neutral position between the retracted position and the deployed position, the torque rod 21 is not twisted (a state in which no urging force is generated in the anti-twist direction), and the torque rod 21 is moved from the neutral position. The slope plate 5 is twisted according to the tilting of the slope plate 5 to the retracted position to urge the slope plate 5 to the neutral position, and is twisted according to the tilting of the slope plate 5 from the neutral position to the deployed position. Energize 5 to the neutral position.

  Next, the case where the slope board 5 is used for getting on and off a wheelchair will be described.

  When the slope plate 5 is used, the slope plate 5 in the storage position in the frame 3 is rotated to the deployed position, and the slope plate 5 is bridged from the vehicle 1 to the road surface 32. In the deployment operation of the slope plate 5, the biasing force in the deployment direction from the torque rod 21 acts on the slope plate 5 from the retracted position to the neutral position (position where the slope plate 5 stands substantially vertically). It is possible to work (lift the slope plate 5) with a small force corresponding to the urging force. Further, during the period from the neutral position to the deployed position, a biasing force acts on the slope plate 5 from the torque rod 21 in the retracting direction opposite to the deployed direction, so that the slope plate 5 is rapidly rotated (lowered) by the biasing force. ) And the slope plate 5 is prevented from being hit against the road surface 32.

  When the getting on / off of the wheelchair is completed, the slope plate 5 at the unfolded position spanned from the vehicle 1 to the road surface 32 is rotated to the storage position, and the slope plate 5 is stored in the frame 3. Since the biasing force in the retracting direction acts from the torque rod 21 on the slope plate 5 until the neutral position is in the middle of folding the slope plate 5, work is performed with a force that is smaller by the amount of the biasing force (the slope plate 5 is Can be lifted). Further, during the period from the neutral position to the retracted position, an urging force is applied to the slope plate 5 from the torque rod 21 in the unfolding direction opposite to the retracting direction, so that the slope plate 5 is rapidly rotated (lowered) by the urging force. ) Is suppressed, and the slope plate 5 is prevented from being hit against the receiving plate 4.

  As described above, in the present embodiment, since the torque rod 21 is used as the rotation shaft of the hinge 6, the slope plate 5 can be connected to the vehicle 1 while achieving a reduction in size with a simple structure.

  Since the slope plate 5 is stored against the urging force of the torque rod 21, it is possible to prevent the slope plate 5 from being rapidly lowered during storage. Further, the urging force by the torque rod 21 stored when the slope plate 5 is stored can be used when the slope plate 5 is deployed. Thereby, when unfolding the slope board 5, the operation force required for rotation of the slope board 5 can be reduced.

  Similarly, since the slope plate 5 is bridged over the road surface 32 against the urging force of the torque rod 21, when the slope plate 5 is bridged over the road surface 32, it is possible to prevent the slope plate 5 from being rapidly lowered. Further, the urging force by the torque rod 21 stored when the slope plate 5 is bridged over the road surface 32 can be used when the slope plate 5 is stored. Thereby, the operating force required for rotation of the slope plate 5 can be reduced when the slope plate 5 is stored.

  In the above embodiment, the torque rod 21 is twisted according to each tilting of the slope plate 5 from the neutral position to the deployed position and the retracted position, and the slope plate 5 is biased to the neutral position as an example. However, the torque rod 21 may be twisted according to the inclination of the slope plate 5 to the retracted position, and bias the slope plate 5 to the deployed position. In this case, since it is necessary to store the slope plate 5 against the urging force of the torque rod 21, rapid rotation of the slope plate 5 can be suppressed during storage. Further, the urging force generated by the torque rod 21 stored when the slope plate 5 is stored can be used when the slope plate 5 is bridged over the road surface 32. Thereby, when the slope plate 5 is bridged over the road surface 32, the operating force required for the rotation of the slope plate 5 can be reduced.

  Alternatively, the torque rod 21 may be twisted according to the inclination of the slope plate 5 to the deployed position and bias the slope plate 5 to the storage position. In this case, since it is necessary to bridge the slope plate 5 to the road surface 32 against the urging force of the torque rod 21, it is possible to suppress a rapid rotation of the slope plate 5 when the slope plate 5 is bridged to the road surface 32. . Further, the urging force by the torque rod 21 stored when the slope plate 5 is bridged over the road surface 32 can be used when the slope plate 5 is stored. Thereby, the operating force required for rotation of the slope plate 5 can be reduced when the slope plate 5 is stored.

  As mentioned above, although the embodiment to which the invention made by the present inventor is applied has been described, the present invention is not limited by the discussion and the drawings that form part of the disclosure of the present invention according to this embodiment. That is, it should be added that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

  The slope structure according to the present invention can be used for a route bus and other vehicles.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Floor plate 2a Upper surface of floor plate 4 Receiving plate 4b Upper surface of receiving plate 5 Slope plate 5a Entrance / exit surface 6 Hinge 10, 11, 12, 13 Receiving plate side bearing (rotating shaft portion)
14, 15, 16, 17, 18 Slope plate side bearing (rotating shaft)
19, 20 End shaft 21 Torque rod (rotary shaft)
30 boarding gate 31 floor 32 road surface

Claims (3)

A slope structure that assists a wheelchair to get on and off the vehicle entrance and exit,
A floor surface of the vehicle;
A slope plate having a landing surface;
A hinge that rotatably connects the floor surface and the slope plate around a rotation axis extending in the opening width direction of the entrance at the passenger compartment side of the entrance,
The axis of rotation Ri torque rod der that urges the slope plate opposite to the twist direction is twisted in accordance with the tilt of the slope plate,
The hinge has a plurality of first bearings fixed to the floor surface side and a plurality of second bearings fixed to the slope plate side,
The plurality of first bearings and the plurality of second bearings are arranged in a row so as to mesh alternately with each other,
The torque rod is inserted through the plurality of first bearings and the plurality of second bearings, and one of the plurality of first bearings and one second bearing of the plurality of second bearings; A slope structure characterized by being fixed to be non-rotatable and rotatable with respect to the other first bearing and the other second bearing . The slope structure according to claim 1,
The slope plate extends from the entrance / exit to the outside of the passenger compartment and is bridged on the road surface. The deployment position where the entrance / exit surface is exposed upward is reversed from the deployment position with the rotation axis as a center. It is accommodated in the passenger compartment side and can be set to a storage position where the boarding / alighting surface faces downward and faces the floor surface,
The slope structure is characterized in that the torque rod is twisted according to the inclination of the slope plate to the deployed position or the retracted position, and biases the slope plate to the retracted position or the deployed position. The slope structure according to claim 1,
The slope plate extends from the entrance / exit to the outside of the passenger compartment and is bridged on the road surface. The deployment position where the entrance / exit surface is exposed upward is reversed from the deployment position with the rotation axis as a center. It is accommodated in the passenger compartment side and can be set to a storage position where the boarding / alighting surface faces downward and faces the floor surface,
The torque rod is twisted according to each tilt of the slope plate from the neutral position between the deployed position and the retracted position to the deployed position and the retracted position, and biases the slope plate to the neutral position. A slope structure characterized by that.

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