JP2005034565A - Lift for wheelchair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate a passage of a wheelchair through the opening of a vehicle, or the like, when the wheelchair is fed in the vehicle, or the like, from the pallet of a lift for the wheelchair. <P>SOLUTION: This lift 1 for the wheelchair B is composed of the pallet 2 on which the wheelchair B is placed and a lift mechanism 3 for raising and lowering the pallet 2 and equipped with a height reducing mechanism for reducing the height of the wheelchair B placed on the pallet 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

Detailed Description of the Invention

  The present invention relates to a wheelchair lift used in a vehicle or the like that conveys a cared person.

  In day care, etc., the cared person is transported by the vehicle while sitting on the wheelchair. Therefore, the vehicle is provided with a lift that raises and lowers the wheelchair on which the cared person sits, and the cared person gets on and off using the lift. For example, a cared person placed on a pallet raises an integrated wheelchair to the floor level of the vehicle and gets the wheelchair from that position to a predetermined position in the vehicle through the opening of the vehicle.

Problems to be solved by the invention

  The opening height of the vehicle is not so large in design, and when the cared person is tall, the head hits the opening edge when passing through the opening portion. Moreover, even if it does not hit, there is a problem for the care recipient that the opening edge is very worrisome when passing. Such a problem becomes particularly prominent when a light vehicle having a large opening height cannot be used as a vehicle.

  The present invention has been made in view of the above points, and an object of the present invention is to make it possible to easily pass a vehicle opening of a wheelchair in which a cared person is integrated.

Means for solving the problem

  In the present invention, in a wheelchair lift comprising a pallet for placing a wheelchair and an elevating mechanism for raising and lowering the pallet, height reduction for reducing the height of the wheelchair placed on the pallet The structure is provided with a mechanism.

  According to the above configuration, the height of the wheelchair on the pallet is reduced by the height reduction mechanism, so that the vehicle opening of the wheelchair on which the cared person is placed can be easily passed. The height reducing mechanism in the present invention means various structures for realizing a pallet that reduces the height of a wheelchair placed as compared with a normal wheelchair lift pallet.

  According to the present invention, in the wheelchair lift comprising a pallet for placing the wheelchair and an elevating mechanism for raising and lowering the pallet, the pallet is reinforced on the rear side in the traveling direction of the wheelchair on the bottom surface of the pallet. It was set as the structure which a member protrudes and is provided below.

  According to the above configuration, the bottom of the pallet is placed directly on the floor of the vehicle, by positioning the portion where the reinforcing member protrudes from the bottom of the pallet, outside the opening of the vehicle or the like. The position can be set, so that the vehicle opening of the wheelchair carrying the cared person can be easily passed.

  Further, according to the present invention, in a wheelchair lift comprising a pallet for placing a wheelchair and an elevating mechanism for raising / lowering the pallet, It was set as the structure by which the inclination part in which a side becomes low was formed.

  According to the said structure, the height of a wheelchair can be made lower than the normal position on a pallet by letting an inclination part pass, and this can pass easily the vehicle opening etc. of the wheelchair which carried the care receiver. .

  FIG. 1 shows a state in which a rear door of a vehicle provided with a wheelchair lift according to the present invention is opened. The wheelchair lift 1 is provided in the vicinity of the rear opening C of the vehicle A, and is used to get on and off the wheelchair B on which the cared person is placed through the rear opening C. The wheelchair lift 1 has a basic structure formed by a pallet 2 on which the wheelchair B is placed and an elevating mechanism 3 that raises and lowers the pallet 2.

  The pallet 2 is made of metal, and as shown in FIGS. 2 and 3, a small rear side portion 6 is rotatably connected to a large front side portion 5 by a shaft support portion 11 and can be folded.

  Pipe guards 7 are respectively erected on both sides of the front side part 5, and front guard parts 8 that prevent the wheelchair B from falling off in the forward direction are attached to the front edges of the pipe guards 7. As shown in the cross-sectional view of FIG. 4, the front side portion 5 is formed such that the central portion 10 in the lateral direction protrudes upward in a trapezoidal shape by bending, and both end edges 17 protrude upward. . The reinforcing square pipes 12 are respectively attached to both side positions in the recesses on the bottom surface of the central portion 10 and the outer surfaces of both end edges 17 by welding in the front-rear direction, and two square pipes 13 are provided at the rear rear portion. It is mounted parallel to the lateral direction.

  The rear side portion 6 is provided with a notch portion 21 at the rear edge portion, and the step 4 is disposed in the notch portion 21. As shown in FIG. 5, a number of reinforcing square pipes 15 are attached to the bottom surface of the rear side portion 6 in the front-rear direction and the lateral direction, respectively.

  The top of the staircase 4 is provided on the upper surface of the rear side portion 6 of the pallet 2 such that the staircase 4 is pivotally supported by the shaft support portion 19 and positioned in the notch 21. One tread board 18 is pivotally supported at the lower part and provided to be foldable upward, and a caster 22 is attached to the lowermost part of the stairs 4.

  As shown in FIG. 6, the elevating mechanism 3 projects in response to the pump portion 9, the cylinder portion 14 into which hydraulic oil is injected by the pump portion 9, and the hydraulic oil injection from the cylinder portion 14. The lower end of the rod portion 16 is connected and fixed to a part of the upper surface of the side protruding portion 23 of the front side portion 5 of the pallet 2. The wheelchair lift 1 is attached to the vehicle A side with the cylinder portion 14 being pivotally supported on the movable support 30 so as to be pivotable by a pivotal support 31. Further, as shown in FIG. 16 and the like, the movable support 30 is attached by placing a pair of rollers 33 provided at the front and rear positions thereof in a guide 35 fixedly provided on the vehicle A side. It is. In this way, the wheelchair lift 1 can move in the front-rear direction with respect to the vehicle A.

  The operation unit 100 is provided on the upper outer surface of the cylinder unit 14, and is provided with a power switch 101, buttons 102 and 102b for raising and lowering the pallet 2, and a lock release switch 103, respectively.

  A rotation positioning mechanism 200 for positioning the wheelchair lift 1 at a predetermined position when the wheelchair lift 1 is rotated by the shaft support portion 31 is provided at the upper portion of the shaft support portion 31. As shown in FIGS. 7 to 9, the rotational positioning mechanism 200 includes a positioning plate 201 fixed on the shaft support portion 31 and an engagement operating body 202 provided corresponding thereto. The rotation positioning plate 201 is provided with a first engagement recess 205 and a second engagement recess 206 at a position displaced about 90 degrees around the rotation positioning plate 201, and a rotation angle restricting projection 219 is formed on one end thereof. Has been. The engagement actuating body 202 is pivotally supported at its lower portion in a horizontal direction and is urged forward by a first spring 207. The engagement actuating body 202 is slidably provided on the engagement base 208 and moved forward by a second spring 209. The engaging body 210 is biased. The front end of the engagement base 208 forms a first engagement portion 211, and the front end of the engagement body 210 forms a second engagement portion 212. Reference numeral 213 denotes an operation lever whose base is fixed to the upper surface of the engagement base 208 and protrudes upward through a long hole 215 of the engagement body 210. Reference numeral 216 denotes a pressing body that suppresses the lifting of the engaging body 210. The pressing body 216 is pressed in a state in which the engaging body 210 can slide and move in the front-rear direction. With the configuration as described above, the engagement base 208 can be moved integrally against the force of the first spring 207 by pushing the handle portion 217 of the operation lever 213 to the back of the vehicle A, and the operation lever 213 can be moved into the long hole 215. The engagement body 210 can also be moved integrally against the force of the second spring 209.

  A cam plate 220 is further laminated on the upper surface of the positioning plate 201, and a first limit switch 221 is provided to correspond to the cam plate 220. The cam plate 220 is formed with a third engagement recess 218.

  FIG. 10 shows an electric circuit configuration of the wheelchair lift 1. In addition to the pump unit 9, the power switch 101, the lifting buttons 102 a and 102 b, the lock release switch 103, the first limit switch 221, the electromagnetic valve 105 Each of the solenoid 106 and the second limit switch 108 is connected. The first limit switch 108 is interlocked with the cam plate 220 and is closed only when the wheelchair lift 1 is at a rotational position of 90 degrees in the horizontal position with respect to the vehicle A and at a rotational position of 0 to 13 degrees. As a result, the wheelchair lift B cannot be raised at other rotational positions. The second limit switch 108 is provided in the upper part of the cylinder part 14, and when the rod part 16 reaches the highest position in conjunction with the ascending rod part 16, the lift button 102a and the pump part 9 are opened. Thereby, the pump unit 9 is automatically stopped. At that time, the power switch 101 and the solenoid 106 are closed, and at that time, the solenoid 106 can be operated by operating the lock release switch 103. The pump unit 9 is connected in series to the power switch 101, the first limit switch 221, the lift button 102a, and the second limit switch 108, and ensures safety by operating all these switches in the ON state. . The elevating mechanism 3 used here raises the rod portion 16 by injecting oil into the cylinder portion 14 by the operation of the pump portion 9 based on the operation of the elevating button 102a, and the electromagnetic valve 105 based on the operation of the elevating button 102b. When the oil can be discharged by the opening operation, the rod portion 16 is lowered by its own weight. As shown in FIG. 11, the solenoid 106 is provided in a lock body 230 that is fixedly provided on the vehicle A side, and is actuated by operating the lock release switch 103. The protruding lock pin 231 is raised and removed from the lock hole 233 of the lock member 232 provided on the upper surface of the movable support 30. The lock holes 233 are provided in front and rear positions of the lock member 232, respectively. The movable support 30 can move along the guide body 35 only when the lock pin 231 is not locked in the lock hole 233. That is, when locked, the wheelchair lift 1 cannot be moved in the front-rear direction with respect to the vehicle A.

  Next, the operation | movement at the time of boarding accompanying use of the said wheelchair lift 1 is demonstrated. In the state of FIG. 12, the pallet 2 is positioned on the ground G, and the wheelchair B on which the person is sitting is moved backward from the right position and placed on the pallet 2, and the front guard portion 8 is raised by operating the lever 81. In this state, the rod portion 16 protrudes from the cylinder portion 14 with the maximum length. Further, the pallet 2 is displaced 90 degrees from the position shown in FIG. Further, the staircase 4 is located substantially horizontally with the tread plate 18 folded. Further, the wheelchair lift 1 cannot move in the front-rear direction with respect to the vehicle A because the moving support 30 locks the lock pin 231 in the lock hole 233 behind the lock member 232. If it is possible to move at this position, if the wheelchair lift 1 located outside the vehicle A is applied with force from the rear when it is lifted, it will collide with the rear of the vehicle A, and the cared person on the wheelchair lift 1 will be cared for. As a result, the wheelchair lift 1 and the vehicle A are damaged.

  Further, at this position, the first engaging portion 211 of the engaging base 208 is elastically engaged with the first engaging recess 205 of the positioning plate 201 in the rotational positioning mechanism 200, whereby the wheelchair lift 1 is provided at this position. Cannot rotate. If it is possible to rotate in this position, if a force is applied to the wheelchair lift 1 located outside the vehicle A when it is lifted or the like, it will collide with the rear part of the vehicle A. There is a danger, and the wheelchair lift 1 and the vehicle A are damaged. At this position, the first limit switch 221 is closed by being pushed by the cam plate 220, and the second limit switch 108 is also positioned between the lifting button 102a and the pump portion 9 so that the rod portion 16 is at the highest position. It is closed because it is not.

  Next, when the power switch 101 is turned on in the operation unit 100 and the elevating button 102a is pressed, the pump unit 9 is operated and the rod unit 16 sequentially shortens the protruding length thereof, as shown in FIGS. As shown in FIG. 15, the pallet 2 moves up. Before the pallet 2 is lifted, the support bar 40 is extended downward by releasing the lock portion 41, and the lower end of the support rod 40 is brought into contact with the ground G to fix the lock portion 41. When the pallet 2 floats from the ground G during the ascent (FIGS. 12 to 13), the weight of the person and the wheelchair B is applied to the vehicle A via the pallet 2, and the rear part of the vehicle A sinks momentarily and shakes due to it. However, when the lower end of the support bar 40 from the vehicle A is in contact with the ground G as described above, the weight is received by the support bar 40 and the rear part of the vehicle A sinks. Is avoided.

  As the pallet 2 moves up, the upper part of the staircase 4 is pivotally supported so that the lower part is lowered by its own weight, and after the caster 22 is lifted, it is suspended from the pallet 2 in an oblique state. Until the caster 22 floats, the lower end of the stairs 4 moves horizontally on the ground, and the movement is performed smoothly and without noise by the rotation of the caster 22.

  FIG. 16 shows a planar configuration corresponding to FIG. When the rod portion 16 reaches the highest position and the lift button 102a of the second limit switch 108 and the pump portion 9 are opened (the power switch 101 and the solenoid 106 are closed), the pump portion 9 is stopped. The rise of pallet 2 stops. Next, the wheelchair lift 1 is rotated at the shaft support portion 31 by pushing the operation lever 213 to release and push the engagement of the first engagement portion 211 with the first engagement recess portion 205. Next, FIG. As shown in FIG. 18, the rotation is stopped by the engagement of the second engagement portion 212 with the third engagement recess 218 of the cover plate 220, and the planar position in this state is as shown in FIG. The wheelchair lift is displaced 12 degrees to the right with respect to the vehicle A, and the bottom surface of the pallet 2 is slightly lifted from the floor surface of the vehicle A at the height position.

  Next, the electromagnetic valve 105 is actuated by depressing the raising / lowering button 102b of the operation unit 100, and the pallet 2 is lowered to bring the bottom surface into contact with the floor surface of the vehicle A. From this position, the caregiver depresses the front guard 8 by operating the lever 81 and then pushes the wheelchair B slightly forward. The caregiver then moves up the pallet 2 from the stairs 4 and moves the wheelchair lift 1 to the right front in the vehicle A. Let As shown also in FIG. 23, this vehicle A accommodates two wheelchairs B in parallel in the front-rear direction, and stores the wheelchair B on the right side as described above. As shown in FIG. 20, the vehicle A and the wheelchair lift 1 are moved by moving in the same direction. At that time, as shown in FIGS. 7 to 9, the first engagement portion 211 is engaged with the second engagement recess 206, and the wheelchair lift 1 cannot rotate. In this way, the wheelchair B can be moved stably and easily in a predetermined direction.

  By rotating the wheelchair lift 1 as described above, it is possible to cope with a case where there is no room in a space such as a road when getting on and off. That is, when the wheelchair B is further placed on the pallet 2 projecting rearward of the vehicle A from the rear side, it is necessary to secure a large space behind the vehicle A, but the wheelchair B can be placed from the side. The problem is solved by doing.

  The movement of the wheelchair lift 1 on the pallet 2 will be described. Before the movement, the rear part 6 of the pallet 2 and the rear part of the front part 5 are positioned so as to protrude rearward from the opening C of the vehicle A as shown in FIG. That is, only the portion where the reinforcing square pipes 13 and 15 are attached to the bottom surface of the pallet 2 so as to protrude downward protrudes outward from the opening C of the vehicle A, whereby the pallet 2 is a reinforcing member of the front side portion 5. Is designed so that only the portion that does not protrude from the bottom surface is in direct contact with the floor surface of the vehicle A and the height of the plane on which the wheelchair B of the pallet 2 is placed is minimized. If the reinforcing member is provided on the entire bottom surface of the front side portion 5 of the pallet 2, the reinforcing member is positioned between the bottom surface of the pallet 2 and the floor surface of the vehicle A, and the wheelchair B of the pallet 2 is correspondingly moved. The height of the surface to be placed becomes high.

  Since the height of the upper surface of the pallet 2 is lowered by about 2.5 cm as described above, the head position of the cared person is lowered when moving the wheelchair B on which the cared person is placed. The opening C can be easily passed through.

  Further, the caregiver can easily get into the vehicle A by using the tread plate 18 of the stairs 4 as described above. Further, since the staircase 4 is provided so as to be located in the notch 21 of the pallet 2, the staircase 4 does not protrude so far from the pallet 2 even when the tread plate 18 is opened. The effect of the space surface behind the vehicle A obtained by the rotation configuration of the wheelchair lift 1 can be similarly obtained.

  In the state shown in FIG. 21, the rear portion of the front side portion 5 of the pallet 2 protrudes outward from the opening C of the vehicle A. In this state, even if the rear side part 6 is folded back onto the front side part 5, the rear part protrudes outward from the opening C and the door D cannot be closed. Therefore, the lift button 102a is pushed to raise the wheelchair lift 1 slightly, and then the lock release switch 103 is pushed to lift the lock pin 231 to release from the lock hole 233. At the same time, the wheelchair lift 1 is pushed into the back of the vehicle A. . As a result, the movable support 30 is slid forward along the guide body 35 so that the rear portion of the front side portion 5 is located inside the opening C, and the rear side portion 6 at that position is as shown in FIGS. The door D of the vehicle A is closed by folding the vehicle A inside. At the time of the folding, the stairs 4 supported by the shaft are also folded and housed integrally inside the vehicle A. As described above, the rear side portion 6 of the pallet 2 can be folded together with the stairs 4 to reduce the front-rear dimension when the pallet 2 is stored in the vehicle A, thereby effectively using the space in the vehicle A. I am doing so.

  24 and 25 show another embodiment of the pallet 2 portion. In this structure, two pairs of inclined portions 50 and 51 whose front side is lowered are formed in the middle of the traveling path on which the wheel of the wheelchair on the front side portion 5 of the pallet 2 travels. With such a configuration, the front wheel and the rear wheel of the wheelchair pass through the inclined portions 50 and 51 so that the height of the wheelchair is lowered, and thus the opening C of the vehicle A is similar to that of the above embodiment. When passing, the head height can be lowered so that it can be easily passed. This embodiment is effective in a configuration in which the pallet 2 is thick and the surface of the pallet 2 is high.

The invention's effect

  According to the present invention, the height of the wheelchair on the pallet is reduced by the height reduction mechanism, and thereby the vehicle opening of the wheelchair carrying the cared person can be easily passed.

  Rear view of a vehicle equipped with the wheelchair lift of the present invention   The top view of the pallet of the lift for wheelchairs of this invention   Sectional drawing of the pallet of the lift for wheelchairs of this invention   Sectional drawing of the front side part of the pallet of the lift for wheelchairs of this invention   Sectional drawing of the rear side part of the pallet of the lift for wheelchairs of this invention   The principal part perspective view of the lift for wheelchairs of this invention   The perspective view of the rotation positioning mechanism part of the lift for wheelchairs of this invention   The top view of the rotation positioning mechanism part of the lift for wheelchairs of this invention   Sectional drawing of the rotation positioning mechanism part of the lift for wheelchairs of this invention   Electric circuit diagram of wheelchair lift of the present invention   The principal part perspective view of the lift for wheelchairs of this invention   Explanatory drawing of the raising operation of the lift for wheelchairs of this invention   Explanatory drawing of the raising operation of the lift for wheelchairs of this invention   Explanatory drawing of the raising operation of the lift for wheelchairs of this invention   Explanatory drawing of the raising operation of the lift for wheelchairs of this invention   Plan view of the wheelchair lift of the present invention   The top view of the rotation positioning mechanism part of the lift for wheelchairs of this invention   Sectional drawing of the rotation positioning mechanism part of the lift for wheelchairs of this invention   Plan view of the wheelchair lift of the present invention   Plan view of the wheelchair lift of the present invention   Front and rear position explanatory view of the wheelchair lift of the present invention   Front and rear position explanatory view of the wheelchair lift of the present invention   The top view at the time of folding of the lift for wheelchairs of this invention   The top view of other embodiment of the pallet of the lift for wheelchairs of this invention   Sectional drawing of other embodiment of the pallet of the lift for wheelchairs of this invention

Explanation of symbols

1 Lift for wheelchair 2 Pallet 3 Lifting mechanism 13 Square pipe (reinforcement member)
15 square pipe (reinforcing member)
50 Inclined portion 51 Inclined portion A Vehicle B Wheelchair

Claims (3)

In a wheelchair lift comprising a pallet for placing a wheelchair and an elevating mechanism for raising and lowering the pallet,
A lift for a wheelchair comprising a height reduction mechanism for reducing the height of a wheelchair placed on the pallet. In a wheelchair lift comprising a pallet for placing a wheelchair and an elevating mechanism for raising and lowering the pallet,
The wheelchair lift is characterized in that a reinforcing member for the pallet projects downward on the rear side of the pallet bottom in the running direction of the wheelchair. In a wheelchair lift comprising a pallet for placing a wheelchair and an elevating mechanism for raising and lowering the pallet,
A lift for a wheelchair, wherein an inclined portion having a lower front side is formed in the middle of a traveling path on which the wheel of the wheelchair of the pallet travels.

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