JPH09220965A - Lifting device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the forward and backward movements of the platform and to produce good work environment, by freely extend or retract a vehicle lifting device comprising a platform, a lifting link and a lifting link driving mechanism in response to the entrance of the vehicle to thereby house it under the floor of the vehicle. SOLUTION: A housing part 4 whose rear end is formed at an entrance 3 is made under the floor of a vehicle in response to an entrance 2 of a rear part of a vehicle 1 and is provided with a vehicle lifting device comprising a platform 5, a lifting link and a lifting link driving mechanism such that it can be freely inserted or retracted. The housing part 4 is shaped like a box and has a rail frame 9 and a rack on right and left inner wall. The lifting link driving mechanism has a slide frame comprising an outer slide frame 11 and an inner slide frame 12. Accordingly, the vehicle lifting device is housed under the floor of the vehicle to eliminate the forward and backward movements of the platform, which produces good work environment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when used, sets up an elevating mechanism including a platform by retracting it from a storage part under the floor of a vehicle and moving it back and forth between the floor surface and the road surface of the vehicle as much as possible. The present invention relates to an elevating device for a vehicle, which can vertically elevate and lower the platform and, after use, can again store the entire elevating mechanism in the storage part of the vehicle.

[0002]

2. Description of the Related Art Hitherto, there have been proposed a number of vehicle elevating / lowering devices for elevating and lowering a platform and getting on or off the platform.

[0003]

The vehicle lifting / lowering device of the present invention can be stored under the floor of a vehicle without occupying the vehicle interior of the vehicle, and vertically raises / lowers the platform to eliminate the forward / backward movement of the platform. The purpose was to obtain a good lifting environment, to make the lifting space outside the passenger compartment as narrow as possible, to easily secure a place for lifting, and to provide a lifting mechanism that is simple, robust, and low cost. It is a thing.

[0004]

[MEANS FOR SOLVING THE PROBLEMS] A storage unit is provided under the floor of a vehicle, and a vehicle lifting device including a platform, a lifting link, and a lifting link drive mechanism is extended and set freely corresponding to an entrance / exit of the vehicle. It is a featured vehicle lifting device.

A connecting support frame that always maintains a required angle with respect to a horizontal plane is provided at the tip of an elevating link that rotates about its base end in response to reciprocating power or rotating power, and the platform is horizontally mounted on this connecting support frame. While slidably supporting the link, a correction link that corrects and moves the platform with respect to the connecting frame according to the rotation angle of the lifting link is connected to the lifting link and the platform.
An elevator device for a vehicle, characterized in that an arc up-and-down movement of an up-and-down link is corrected to a vertical up-and-down movement of a platform to move up and down.

A slide frame that slides laterally with respect to the rail frame of the storage section is provided, and the slide frame is provided so that it can be slid and stopped at a fixed position by the moving means and the meshing means. The link is pivotally supported, and the connecting frame is connected to the tip of the lifting link by the support shaft so that the required angle is always maintained with respect to the horizontal plane, and the slide linking part is provided at a position further away from the shaft support point. The slide linking part is slidably fitted to the engaging parts provided on both sides of the platform, and the platform and the elevating link are connected to each other by a correction shaft by a supporting shaft so that the ascending and descending movement of the elevating link is performed on the platform. The vertical lifting device compensates for the vertical lifting movement of the vehicle and moves up and down.

Under the floor of the vehicle, there are left and right rail frames spaced apart from each other corresponding to the entrance and exit of the vehicle, and one or both of the left and right rail frames are provided with a reciprocating means for reciprocating back and forth. A slide frame that slides back and forth by the rail frame and moving means of the storage part and that stops and fixes at a required position, and a connecting frame that has a base end pivotally supported at the front end of the slide frame and always maintains a required angle with respect to a horizontal plane. An elevating link that pivotally supports the frame at the tip, an elevating link drive mechanism that is installed in the slide frame and operates the elevating link by a reciprocating power source or a rotational power source, and a supporting frame that is slidable horizontally in the required width. It is passed between the platform and the platform and the lifting link, and the platform is corrected by expanding and contracting the corresponding angle according to the rotation angle of the lifting link. In a vehicle lifting device and correcting to lower the arc lifting movement of the lifting links consisting of a dynamic correcting linked to vertical lift movement of the platform.

The slide frame is provided by an outer slide frame and an inner slide frame that slides back and forth with respect to the outer slide frame. At the front end of the inner slide frame, at the tip is a connection support frame that always maintains a required angle with respect to a horizontal plane. The base end of the lifting link that supports the shaft is supported, and the lifting link drive mechanism that operates the lifting link by the reciprocating power source or the rotary power source is installed on the inner slide frame, and the platform is connected. Freely support, pass the first correction link to the inner slide frame and the lifting link, expand and contract the corresponding angle according to the rotation angle of the lifting link to correct and move the inner slide frame, and make the second correction to the platform and lifting link. Hand over the link,
A lifting device for a vehicle, wherein a corresponding angle is expanded / contracted according to a rotation angle of a lifting link to correctly move a platform, and a circular lifting motion of the lifting link is corrected to a vertical lifting motion of the platform to lift.

The elevating link may be composed of an upper elevating link and a lower elevating link.

[0010]

Since the vehicle lifting / lowering device of the present invention is configured as described above, it can be stored not in the passenger compartment of the vehicle but in the storage space under the floor, and the platform, the lifting link and the To move the lifting link drive mechanism out of the vehicle, the slide frame is moved along the rail frame by transmission rotation, and the platform, lifting link, and lifting link drive mechanism mounted on the slide frame are moved out of the vehicle and transmitted. Stop rotation and hold slide frame in place.

Next, in a state where the platform, the lifting link, the lifting link drive mechanism, etc. are horizontally deployed from the storage section, the lifting link is operated by the reciprocating power source or the rotary power source and is pivotally supported at the tip of the lifting link. Raise and lower the connecting support frame.

This connecting support frame is provided with a slide linking portion at a position further distant from the shaft fulcrum in the front and rear direction, and the slide linking portion is slidably fitted to the engaging portions provided on both sides of the platform. Since the correction link is connected between the slide frame and the lifting link, the correction link is expanded / contracted according to the rotation angle of the lifting link, and the platform moves the arcs around the base of the lifting link. Despite this, the vertical movement is corrected to raise and lower.

In the slide frame composed of the outer slide frame and the inner slide frame slidably supported by the outer slide frame, the inner slide frame is fixed to the outer slide frame fixed at the time of ascending / descending and the base of the lifting link is provided. With the end pivotally supported, a first correction link that expands and contracts according to the rotation angle of the lifting link is connected and connected to the outer slide frame and the platform, and the inner slide frame is slid relative to the outer slide frame to lift the lifting link itself. The second correction link is connected to the platform and the lifting link that are slidably supported on the connecting support frame by the correction movement, and the platform is also expanded and contracted according to the rotation angle of the lifting link. Correction transfer And one in which the tip of the overall lift link lifting is corrected to vertical movement despite the arcuate movement around the respective proximal.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings which are embodiments, and FIGS. 1 to 9 show a first embodiment, which corresponds to an entrance / exit 2 of a rear portion of a vehicle 1. A storage section 4 whose rear end is formed at the entrance / exit 3 is provided under the floor, and a vehicle lifting device 8 including a platform 5, a lifting link 6, and a lifting link drive mechanism 7 is freely inserted into and taken out from the housing section 4. .

As described above, the storage portion 4 is provided in a box shape, and the upper and lower surfaces are arranged on the inner surfaces of the left and right side walls so that the sliding movement and the fixed position stop can be performed by the moving means and the meshing means. A rail frame 9 serving as a track surface is attached, and a rack 10 having an upper surface serving as a meshing surface is attached to one or both of them. Although not shown, as another embodiment of the configuration capable of sliding movement and stopping at a fixed position by the moving means and the meshing means, a screw screw rod and a screw receiver,
It may be a combination of a rail frame and an endless chain.

The elevating link drive mechanism 7 is provided with a slide frame composed of an outer slide frame 11 and an inner slide frame 12, and the outer slide frame 11 is passed between an outer plate 13 arranged on the left and right and a rear end thereof. It is provided in a U shape from the rod 14. Then, it may be reinforced by the corner plate 15.

On each outer surface of the outer side plate 13 of the outer slide frame 11, a pair of rollers 16 connected to the upper and lower rail surfaces of the rail frame 9 are vertically supported, and are axially supported by a support shaft 17 spaced apart in the front and rear direction. The housing 4 is slidably supported in the front-rear direction along the rail frame 9, and the U-shaped rail frames 18 are provided on each inner surface of the outer plate 13 so as to face inward, front-rear, laterally, and face each other. A first correction link 20 is connected to the inner surface of each tip of 13 by a support shaft 19.

The outer slide frame 11 may be rotated by a handle, but in this embodiment, a pinion 21 which is rotated by a motor (not shown) is rotatably supported, and the pinion 21 is mounted on the rack 10 of the storage section 4. For example, the rail frame 9 of the storage unit 4 is engaged by meshing.
The outer slide frame 11 is provided so as to be movable back and forth along with, and is also provided so as to be stopped and fixed at a required position.

The inner slide frame 12 is provided in a square shape from an inner side plate portion 22 arranged on the left and right sides, and a front side transmission rod 23 and a rear side transmission rod 24 which are delivered to the front and rear portions thereof. In addition,
The inner plate portion 22 has a base portion of an elevating link 6 which will be described later interposed therein to support the inner plate portion 22a and the inner plate portion inner plate 22.
It is a b-plate.

The outer slide frame 1 is provided on each outer surface of the inner plate portion 22 of the inner slide frame 12.
The roller 25 fitted to the rail frame 18 provided on each inner surface of the outer plate 13 in FIG.
Bases of upper lifting link 29 and lower lifting link 30 that constitute lifting link 6 on support shafts 27 and 28 that are slidably supported back and forth along the inner plate 22 and are arranged above and below the inner surface of each front portion of inner plate portion 22. Each of them is pivotally supported, and the upper lifting link 29
The first correction link 20 and the first correction link 20 are connected by a support shaft 31 so that the slide of the inner slide frame 12 with respect to the outer slide frame 11 follows the rising angle of the upper lifting link 29.

A drive shaft 27a is integrally transferred and connected to each support shaft 27 arranged on the inner surface side of each front portion of the inner plate portion 22 of the inner slide frame 12, and the central portion of the drive shaft 27a is connected to the front portion. It is supported by a bearing 32 provided on the cross rod 23, and an interlocking lever 33 is integrally provided, and the base end is supported on a support plate 34 which is supported by connecting the front and rear ends to the front and rear shift rods 23 and 24. An interlocking lever 33 is pivotally connected to a tip end of a piston shaft 37 of a hydraulic cylinder 36 (reciprocating power source) pivotally supported by a shaft 35 by a support shaft 38. In addition, as an example of the rotational power source, a rotary shaft that is transmitted and rotated by a motor,
Similarly, there are screw screw rods and screw receivers that rotate in transmission.

Regarding the connection between the upper lifting link 29, the lower lifting link 30 and the platform 5 which constitute the lifting link 6, the respective tips of the upper lifting link 29 and the lower lifting link 30 are connected to the connecting frame 39 by a support shaft 40. As an example of a slide linking portion that is axially supported so as to maintain parallelism and is provided at a position further apart from the axial fulcrum, the roller 41 is axially supported by a spindle 42, and the slide linking portions are provided on both sides of the platform. The engaging portion provided, for example, is slidably fitted to the rail frames 43 provided on the outer surfaces of both sides of the platform 5, and the platform 5 and the lower elevating link 30 are attached to the second correction link 44 by the support shaft 45 and the support shaft 46. The shafts are connected. In addition, 4
Reference numeral 7 is a spindle insertion hole. And connection frame 39
Is an axial support between the tips of the upper lifting link 29 and the lower lifting link 30.
and b.

Explaining the second embodiment, the outer slide frame 11 and the inner slide frame 12 of the vehicle lifting / lowering device 8 of the first embodiment are integrally provided with a slide frame 48, which is the same as the first embodiment. The slide frame 48 is slidably provided by a roller 50 that is connected to a rail frame 49 of the storage section, and can be slid and stopped at a fixed position by a switch (not shown) by a rack 51 and a pinion 52. The upper elevating link 53 and the lower elevating link 54 are pivotally supported at the front ends of the upper elevating link 53 and the lower elevating link 54, and the tip ends of the upper elevating link 53 and the lower elevating link 54 are pivotally supported by the support shaft 55 so as to be parallel to each other. The roller 57 is supported further by a support shaft 58 so as to be further spaced apart from the axis fulcrum in the front and rear, and the roller 57 is separated in the front and rear. With slidably to fit in the rail frame 59 provided on both sides the outer surface of the platform 5a,
A correction link 60 is pivotally connected to the platform 5a and the upper lifting link 53 by a support shaft 61 and a support shaft 62. A connecting plate 63 may be provided on the platform 5a in order to properly obtain the connecting fulcrum so that the correction link 60 expands and contracts along the upper elevating link 53.

The first correction link 20 connects the inner slide frame 12 and the upper lifting link 29, and
The correction link 44 connects the lower elevating link 54 and the connection support frame 39, and the correction link 60 connects the platform 5a and the upper elevating link 53. The same correction operation may be performed by connecting via a rod and a plurality of connecting connecting rods.

Although not shown, the first correction link 20
Is to connect the inner slide frame 12 and the lower lifting link 30, the second correction link 44 is to connect the upper lifting link 53 and the connecting support frame 39, and the correction link 60 is to connect the platform 5a and the lower lifting link 54. You can do it. And, if it is not possible to directly connect in this connection structure, of course, an intermediate fulcrum is taken separately and a simple connecting rod, an L-type connecting rod,
The same correction operation may be performed by communicating via other plural connecting rods.

Since the vehicle elevating / lowering device of the present invention is constructed as described above, both the first and second embodiments can be stored not in the vehicle compartment but in the storage space under the floor. In order to extend the platform, the lifting link, the lifting link drive mechanism, etc. from the storage part to the outside of the vehicle, the pinion or the like is rotated by the handle operation or the switch operation, and the slide frame is fixed to the fixed rack of the embodiment by the rail frame. Along with the platform mounted on the slide frame, the lifting link and the lifting link drive mechanism, etc. are extended out of the vehicle, and when the rotation of the pinion of the embodiment is stopped, it is meshed with the fixed rack, so it is held in a fixed position. It is fixed.

In particular, since the rollers arranged on the outer surface of the rail frame of the embodiment arranged on the inner wall surface of the storage section face each other from above and below and are connected to each other, the vertical and horizontal directions are restricted, and the front-back direction along the rail frame is restricted. It is free and its direction is controlled by a pinion and a rack.

When a hydraulic pressure is applied to the inside of the cylinder, the platform, the lifting link, and the lifting link drive mechanism rotate a lever connected to a piston rod fitted into one end of the cylinder and rotate the lever. Since the shafts are attached integrally, they can be maintained in a horizontally expanded state, and can be stored in the storage portion by moving the slide frame in that state.

Further, when the platform, the lifting link, and the lifting link drive mechanism are horizontally extended from the storage part and are extended to the outside of the vehicle and hydraulic pressure is applied to the inside of the cylinder, the lever connected to the piston rod fitted at one end thereof is rotated. Then
Since this lever is rotated and the support shaft is integrally attached to this lever, the upper lifting link provided integrally with the support shaft is rotated, and the tips of the upper lifting link and the lower lifting link are respectively The support shaft is lifted up and down by the support shaft while maintaining the required angle.

In this embodiment, this connection support frame is constructed by axially supporting the rollers by separating them from each other in the front-rear direction, and by fitting the rollers to the rail frame of the platform so as to be slidable. In the first embodiment, the slide frame is used. Is composed of an outer slide frame and an inner slide frame slidably supported by the outer slide frame.The outer slide frame is fixed when moving up and down, and the upper elevating link whose base end is axially supported by the inner slide frame. In the second embodiment, the platform is slidably supported by the connecting slide frame and the lower lifting link whose base end is axially supported by the inner slide frame is coupled by the second correction link. , The slide frame consists of an outer slide frame and an inner slide frame. Since the slide frame is not configured, the base end of the upper lift link and the base end of the lower lift link are pivotally supported by the slide frame, and the correction link is connected between the platform slidably supported by the connecting slide frame and the lower lift link. So the platform is
The upper and lower links and the lower and lower links move up and down while being corrected to a substantially vertical movement despite the arcuate movement centered on the base end.

[0031]

EFFECTS OF THE INVENTION Since the vehicle elevating device of the present invention is constructed as described above, it can be stored not in the passenger compartment of the vehicle but in the underfloor storage part, and the vehicle elevating mechanism part can be stored from the storage part. In order to extend the platform, lifting link mechanism, etc. out of the vehicle, the pinion is rotated by handle operation or switch operation, the slide frame is moved along the rail frame with respect to the fixed rack, and the platform mounted on the slide frame is installed. When the elevating link mechanism is extended out of the vehicle and the rotation of the pinion is stopped, it is held in a fixed position because it is meshed with the fixed rack.

In particular, since the rollers arranged on the outer surface of the rail frame arranged on the inner wall surface of the storage section face each other from above and below and are connected to each other, the vertical and horizontal directions are restricted, and the front-back direction along the rail frame is free. The direction is controlled by a pinion and a rack.

Next, in a state where the platform, the lifting link mechanism, and the lifting link drive mechanism are horizontally deployed from the storage section,
When hydraulic pressure is applied to the cylinder, the lever that connects to the piston rod that is inserted into one end of the cylinder is rotated, and this lever is rotated.Since this lever has the support shaft attached to it integrally, The upper elevating link provided is rotated, and the tips of the upper elevating link and the lower elevating link are respectively connected by the support shafts to elevate and lower the supporting frame while maintaining a required angle.

This connecting slide frame is structured such that the rollers are axially supported by separating them from each other in the front and rear direction, and the rollers are fitted to the rail frame of the platform so as to be slidable. In the first embodiment,
The slide frame is composed of an outer slide frame and an inner slide frame slidably supported on the outer slide frame, and an outer slide frame fixed at the time of lifting and lowering, and an upper lifting link whose base end is axially supported by the inner slide frame. Is connected by a first correction link, and a platform slidably supported by a connecting slide frame and a lower lifting link whose base end is axially supported by the inner slide frame are connected by a second correction link. In the example, since the slide frame does not consist of the outer slide frame and the inner slide frame, the base end of the upper lifting link and the base end of the lower lifting link are pivotally supported by the slide frame, and the slide frame is slidably supported by the connection support frame. Platforms Since the correction link is connected between the lower lifting link and the lower lifting link, the platform is corrected to a substantially vertical movement even though the tips of the upper lifting link and the lower lifting link each move in an arc around the base end. It goes up and down.

[Brief description of drawings]

FIG. 1 is a side view showing an outline of an arrangement situation and an operation situation in a vehicle of a first embodiment of a vehicle elevator according to the present invention.

FIG. 2 is also a partially enlarged side view showing an operating condition of the first embodiment.

FIG. 3 is likewise an enlarged plan view showing the structure of the front half thereof.

FIG. 4 is an enlarged plan view showing the structure of the latter half of the same.

FIG. 5 is a partially cutaway enlarged side view showing the structure of the latter half of the same.

FIG. 6 is likewise an enlarged side view showing a lifting link and a lifting link drive mechanism.

FIG. 7 is likewise an enlarged side view showing the lifting link drive mechanism.

FIG. 8 is an enlarged rear view showing the structure of the latter half of the same.

FIG. 9 is an enlarged side view showing the outer slide frame alone of the slide frame.

FIG. 10 is likewise a perspective view showing a lifting operation state of the first embodiment.

FIG. 11 is a side view showing a second embodiment of the vehicle lifting / lowering device of the present invention.

[Explanation of symbols]

 1 vehicle 2 entrance / exit 3 entrance / exit 4 storage 5 platform 5a platform 6 lifting link 7 lifting link drive mechanism 8 vehicle lifting device 9 rail frame 10 rack 11 outer slide frame 12 inner slide frame 13 outer plate 14 rear end transfer rod 15 Corner plate 16 Roller 17 Support shaft 18 Rail frame 19 Support shaft 20 First correction link 21 Pinion 22 Inner plate part 22a Inner plate part outer plate 22b Inner plate part inner plate 23 Front transfer rod 24 Rear transfer rod 25 Roller 26 support Shaft 27 Support shaft 27a Drive shaft 28 Support shaft 29 Upper lift link 30 Lower lift link 31 Support shaft 32 Bearing 33 Interlocking lever 34 Support plate 35 Support shaft 36 Hydraulic cylinder 37 Piston shaft 38 Support shaft 39 Connection support frame 39a Outer plate 39b Inside Plate 40 Spindle 41 Roll 42 Support shaft 43 Rail frame 44 Second correction link 45 Support shaft 46 Support shaft 47 Support shaft insertion hole 48 Slide frame 49 Rail frame 50 Roller 51 Rack 52 Pinion 53 Upper lift link 54 Lower lift link 55 Connection support frame 56 Support shaft 57 Roller 58 spindle 59 rail frame 60 correction link 61 spindle 62 spindle 63 connecting plate

Claims (6)

[Claims] 1. A storage unit is provided under the floor of a vehicle, and a vehicle elevating device including a platform, an elevating link, and an elevating link driving mechanism is provided so as to be freely set in correspondence with an entrance / exit of the vehicle. Lifting device for vehicles. 2. A connection support frame that constantly maintains a required angle with respect to a horizontal plane is provided at the tip of an elevating link that rotates about its base end when it receives reciprocating power or rotational power, and the platform is attached to this connection support frame. The platform is slidably supported in the horizontal direction, and a correction link that corrects and moves the platform with respect to the connecting frame according to the rotation angle of the lifting link is connected to the lifting link and the platform to connect the lifting link to the arc lifting platform. An elevating / lowering device for a vehicle, which is elevated and lowered by being corrected to the vertical elevating and lowering movement of the vehicle. 3. A slide frame which slides laterally with respect to the rail frame of the storage part is provided, and the slide frame is provided so as to be able to slide and stop at a fixed position by a moving means and an engaging means, and a front end of the slide frame. The lifting link is pivotally supported at the end of the lifting link, and the supporting frame is connected to the tip of the lifting link by a supporting shaft so as to always maintain the required angle with respect to the horizontal plane, and slides to a position further back and forth from the pivot. The slide linking part is slidably fitted to the engaging parts provided on both sides of the platform, and the platform and the elevating link are connected by connecting the correction link with the support shaft to move the elevating link in an arc up and down motion. Is a vertical lifting device for a vehicle, in which the vertical lifting movement of the platform is corrected. 4. A storage unit having rail frames left and right under the floor of the vehicle corresponding to an entrance / exit of the vehicle, and having reciprocating means for reciprocating back and forth on one or both of the left and right sides thereof. And a slide frame that slides back and forth by the rail frame and moving means of the storage part and that stops and fixes at a required position, and a base end is pivotally supported at the front end of the slide frame to always maintain a required angle with respect to a horizontal plane. An elevating link that pivotally supports the connecting support frame at the tip, and an elevating link drive mechanism that is installed on the slide frame and operates the elevating link by a reciprocating power source or a rotational power source, and a required width can be slid horizontally in the connecting support frame. Is supported by the platform and is passed between the platform and the lifting link, and the corresponding angle is expanded or contracted according to the rotation angle of the lifting link to correct the platform. An elevating device for a vehicle, which comprises a moving correction link and corrects an arc ascending / descending movement of an ascending / descending link to a vertically ascending / descending movement of a platform to ascend / descend. 5. A connecting frame which is provided with an outer slide frame and an inner slide frame that slides back and forth with respect to the outer slide frame, and at the front end of the inner slide frame, a tip end of the connecting frame that always maintains a required angle with respect to a horizontal plane. The base of the lifting link that pivotally supports the frame is pivotally supported, and the lifting and lowering link drive mechanism that operates the lifting and lowering link by the reciprocating power source or the rotational power source is installed on the inner slide frame, and the platform is required horizontally for the supporting frame. It supports the width slidably, passes the first correction link to the inner slide frame and the elevating link, expands and contracts the corresponding angle according to the rotation angle of the elevating link, and correctively moves the inner slide frame,
The second correction link is passed between the platform and the lifting link, the corresponding angle is expanded or contracted according to the rotation angle of the lifting link to correct the platform, and the vertical lifting movement of the lifting link is corrected to the vertical lifting movement of the platform. A lifting device for a vehicle characterized by the above. 6. The lifting / lowering link includes an upper lifting / lowering link and a lower lifting / lowering link, wherein the lifting / lowering link has an arc lifting / lowering function according to claim 1, claim 2, claim 3, claim 4 or claim 5. An elevating / lowering device for a vehicle, which is capable of elevating / lowering by correcting the movement to a vertical ascending / descending movement of the platform.