JP2000326781A - Lifting device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an engagement-type retaining mechanism from being operated into a retention releasing condition by an error during the lifting operation of a loading part, while simplifying the structure of the engagement-type retaining mechanism. SOLUTION: A plate body 24 capable of mounting a loading part 1 of a body to be loaded in such manner that it can be lifted and lowered, and switchable between the movement inhibiting attitude B1 for inhibiting the movement of the body to be loaded and a movement permitting attitude for permitting the movement, is oscillatably mounted, and an engagement-type retaining mechanism E for retaining the plate body 24 in the movement inhibiting attitude B1, is switchable between a retaining position C1 and a releasing position by its movement in the direction separating form and approaching to the vehicle by a manual operating tool 31. The manual operating tool 3 enables the retaining position C1 to be located on the side separating from the vehicle with respect to the release position, and is energized toward the retaining position C1 by an elastic energizing tool 33, approached to the lateral side in the oscillating shaft center L direction of the plate body 24 in the movement inhibiting attitude B1, and mounted in adjacent to an end surface on the side close to the vehicle with respect to an end surface on the side separating from the vehicle, of the plate body 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a vehicle wherein a mounting portion of a body to be mounted has an ascending position at or substantially at the same height as the floor of a vehicle, and a vehicle at or near the ground, which is higher than the ascending position. It is provided in such a manner that it can be lifted and lowered in a posture parallel or substantially parallel to a descending position located on the side away from the vehicle, and that the edge on the side away from the vehicle is opened as an entrance edge of the mounted body, The mounting portion is pivotally attached to an entrance / exit edge of the mounting portion around an axis along a longitudinal direction of the edge portion, and prevents the mounted body from moving outward from the mounting portion and preventing the mounted body from moving outward. The movement-preventing posture swung upwards as much as possible, and swings downward in a direction away from the mounting portion to allow the mounted body to move outward from the mounting portion. A plate-like body that can be switched by manual operation to the movement allowable posture is provided, and the plate-like body is prevented from moving. An engaging-type holding mechanism which is switchable between a holding state in which the plate is held in a force and a holding release state in which the switching operation by manual operation of the plate-like body is permitted is provided in the mounting portion, and the holding member is moved in a distance direction with respect to the vehicle. Accordingly, the present invention relates to a vehicle elevating device provided so as to be switched by a manual operation tool that can be switched between a holding operation position for operating in the holding state and a holding releasing operation position for operating in the holding release state.

[0002]

2. Description of the Related Art Such a vehicle elevating device is, for example,
With the user sitting on the wheelchair as the object to be mounted, place the wheelchair on the mounting part, and raise and lower the mounting part to lift the wheelchair from the raised position, which is approximately the same height as the vehicle floor. It is used for lowering a wheelchair between a vehicle and the ground by lowering it to a nearby lowering position, or conversely, raising it from a lowering position to an uppering position. In order to prevent the wheelchair from falling while the mounting portion is being lifted and lowered, the mounting portion is provided with a plate member for preventing the wheelchair from falling. Also, an engagement type holding mechanism provided with a manual operation tool is provided.

FIG. 12 shows a known example of such an engagement type holding mechanism and a manual operating tool for operating the holding mechanism. In this conventional structure, the plate member 24A for drop prevention is pivotally attached to an entrance / exit edge, which is a rear end edge of the elevating platform 1A, so as to be swingable around an axis along the longitudinal direction of the edge portion. The cam plate 27A is elastically urged in the direction of the arrow X by a spring (not shown).
It is provided so that it may rotate integrally with. An operation lever 31A for manual operation, which is rotatable around an axis parallel to the swing axis of the plate-shaped body 24A, is provided forward of the plate-shaped body 24A closer to the vehicle than the pivot point. The spring is elastically urged in an arrow Y direction opposite to the X direction, and a lock projection 30A that engages with the lock notch 27B of the cam plate 27A extends from the operation lever 31A. Plate 27 with notch 27B
A and the operation lever 31A constitute an engagement type holding mechanism.

[0004]

However, in the above-described conventional structure, the plate-like body is moved by moving the operation lever 31A in the direction opposite to the biasing direction Y by the spring, that is, in the direction away from the vehicle. Since the engagement type holding mechanism holding the movement preventing posture is switched to the holding release state, the operation lever 31A is moved up and down of the mounting portion 1A.
When the other object comes into contact with the other object, the operation lever 31A is moved to the holding release state side by the contact of the other object, and the holding of the plate-like body 24A in the movement preventing posture by the engagement type holding mechanism may be released. .

The present invention solves such a conventional drawback. While the structure of the engagement type holding mechanism and the like is simplified as much as possible, the holding type of the engagement type holding mechanism is unexpectedly released while the mounting portion is being lifted and lowered. An object of the present invention is to provide a vehicle elevating device that is not erroneously operated in a state.

[0006]

To achieve this object, according to the first aspect of the present invention, the mounting portion of the object to be mounted has the same height or substantially the same height as the floor of the vehicle. The upper and lower positions are parallel or substantially parallel to a lower position positioned on or near the ground and further away from the vehicle than the raised position, and the edge on the side remote from the vehicle is mounted. It is provided in a state where it is opened as an entrance / exit edge of the placing body, and is pivotally attached to the entrance / exit edge of the placing section so as to be swingable around an axis along the longitudinal direction of the edge, and A movement preventing posture in which the mounting body is swung upward to prevent the mounting body from moving outward from the mounting portion, and allows the mounting body to move outward from the mounting portion. Manually switching to the movement-permissible posture that has been swung downward in the direction away from the placement section A flexible plate-like body is provided, and an engagement-type holding mechanism that can be switched between a holding state in which the plate-like body is held in the movement preventing position and a holding release state in which a switching operation by manual operation of the plate-like body is permitted. A manual operating tool provided on the mounting portion, which is operable to switch between a holding operation position for operating in the holding state and a holding releasing operation position for operating in the holding release state by movement in the perspective direction with respect to the vehicle. A lifting device for a vehicle provided to be switched in the, the manual operating tool, the holding operation position is located on the side farther from the vehicle than the holding release operation position, and the In a state where the elastic member is returned and urged toward the holding operation position, and at the holding operation position, the plate-like body in the movement-preventing posture is pivoted about the plate-like body. In the direction of the heart Positioned adjacent to the side aside, and is provided in a state located proximate and end face thereof on the side closer to the vehicle from the end face on the side away from the vehicle of the plate-like body.

That is, since the holding operation position of the manual operation tool is located on the side farther from the vehicle than the holding release operation position, when the mounting portion is operated to be lifted, the manual operation tool is not moved. Even if another object comes into contact, the manual operation tool is pressed to the holding operation position side, so that the engagement type holding mechanism is not unexpectedly switched to the holding release state due to the contact of the other object. Further, the manual operation tool is positioned close to the side of the plate-like body in the swing axis direction with respect to the plate-like body in the movement preventing posture, and the side of the plate-like body away from the vehicle. Is provided on the side closer to the vehicle than the end surface of the vehicle and close to the end surface, so that when the mounting portion is being lowered, another object is likely to come into contact with the manual operation tool. However, contact of another object with the manual operation tool is prevented by the plate-shaped body in the movement preventing posture. Therefore, it is possible to prevent the engagement-type holding mechanism from being accidentally erroneously operated in the holding release state during the elevating and lowering of the mounting portion without particularly complicating the structure of the engagement-type holding mechanism and the like.

According to the second aspect of the present invention, the plate-like body is configured to be manually switchable to a storage posture in which the plate-like body is swung downward in a direction approaching the placement unit,
A restraint mechanism is provided for permitting a switching operation of the plate-shaped body in the movement-preventing posture to the storage posture when the placing portion is at the raised position, and restraining the switching operation to the movement-permissible posture. ing.

That is, when the mounting portion is at the raised position, the switching operation of the plate-shaped body to the movement allowable posture is prevented by the restraint mechanism, so that the switching operation to the movement allowable posture is not erroneously performed. . So, for example,
In a state in which the mounting portion is at the raised position and the plate-shaped body is in the movement-permissible posture, the door is brought into contact with the plate-like body to inadvertently close the opening / closing door of the vehicle. It will not damage.

According to the third aspect of the present invention, the engagement-type holding mechanism includes a rotating body that rotates forward and backward in conjunction with the switching of the attitude of the plate-like body, and the rotation of the plate-like body in the movement preventing attitude. At one time, an engaging body that is freely engageable with the engaged portion of the rotating body and is engaged and disengaged by the manual operating tool;
When the plate-shaped body deviates from the movement preventing posture and is located on the movement allowable posture side, a receiving portion that receives the engaging body urged toward the engaging side by the urging force of the elastic urging tool, The plate-like body is provided on the rotating body in such a state that the plate-like body is received by the urging force of the elastic urging tool so as to be engaged with the engaged portion as the plate-like body comes to the movement preventing posture.

That is, the engagement-type holding mechanism has a simple structure including a rotating body that rotates forward and backward in conjunction with the plate-like body, and an engaging body that engages with and disengages from the engaged portion of the rotating body. In addition, when the engaging body is elastically pressed against the receiving portion provided on the rotating body by the elastic urging tool, and the plate-like body is in the movement preventing posture, the engaging body is moved by the elastic urging tool. The engaging portion engages with the engaged portion by an urging force. Therefore, when switching the plate-like body in the movement-permissible posture to the movement-preventing posture, there is no need to move the manual operating tool, and the plate-like body is easily and reliably switched to the movement-preventing posture. Can be.

According to the fourth aspect of the present invention, when the rotating body moves the engaging body engaged with the engaged portion toward the disengagement side to the storage posture switching position,
Allowing the plate to swing into the storage position,
Also, when the engaging body is moved toward the disengagement side to the movement allowable posture switching position beyond the storage posture switching position, the plate-like body is allowed to swing to the movement allowable posture. Wherein the restraint mechanism moves the engaging body engaged with the engaged portion beyond the storage attitude switching position toward the disengagement side at the raised position of the mounting portion. It is configured to prevent the vehicle from being moved to the allowable posture switching position side.

That is, as described above, when the mounting portion is at the raised position, the switching operation of the plate-like body to the movement allowable posture is prevented by the restraint mechanism.
Since the restraining mechanism is provided on the rotating body that constitutes the engagement-type holding mechanism, both functions of the engaging-type holding mechanism and the restraining mechanism can be combined by one rotating body. The structure can be simplified and the cost can be reduced.

According to the fifth aspect of the present invention, the manual operation tool has an operation portion for manual operation, and the surface of the operation portion on the vehicle side is higher and lower than the surface on the side away from the vehicle. It is configured to be gently inclined toward the direction.

That is, since the manual operation tool has an operation section dedicated to manual operation, the manual operation of the operation tool can be easily performed, and the surface of the operation section on the vehicle side is located on the side away from the vehicle. In other words, the surface of the operation unit on the side away from the vehicle is configured to be relatively steep in the up and down direction. By pressing the inclined surface with hands or feet, the manual operation tool can be relatively easily switched to the holding release operation position. That is, even if the operation unit for manual operation is relatively small in order to avoid contact with other objects, the operation to the holding release operation position can be performed easily. And, as described above, even if another object comes into contact with the operation unit for manual operation while the mounting unit is being lifted, the engagement type holding mechanism is not switched to the holding release state. However, in addition to this, since the surface of the operation unit on the vehicle side is configured to be gently inclined, even if another object comes in contact with the mounting unit during the ascent operation, other objects will follow the gentle inclination. It is possible to escape upward, and it is possible to prevent the operation section and the manual operation tool from being damaged by the contact of another object.

According to the sixth aspect of the present invention, a plurality of non-slip projections are provided on a surface of the operation portion that is away from the vehicle.

Therefore, as described above, when pressing the surface of the operation portion that is formed on a relatively steep slope, the pressing operation can be performed without slipping, and the pressing operation to the holding release operation position can be performed. Switching can be performed more easily.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicle elevating device according to the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, this vehicle lifting device is mounted on a floor F near a rear portion of a vehicle V such as a wagon equipped with an opening / closing door D for opening and closing the rear portion. A lifting table 1 as a mounting unit for mounting and lifting a wheelchair C, which is an example of a mounting body;
An elevating frame 2 that holds and lifts the elevating table 1, a pair of left and right arms 3 that support the elevating frame 2 at the lower end, and a pair of left and right parallel four-bar links 4 that connect the pair of left and right arms 3 to the vehicle V side. A pair of left and right double-acting hydraulic cylinders 5 that drives the parallel four-bar link mechanism 4 on the right and left to raise and lower the lift 1
And the like, and can be fixed to the floor F of the vehicle V via the base frame 6 that supports the parallel four-bar linkage 4.

Next, details of each device and members will be described. In this specification, for the sake of convenience, the forward direction of the vehicle V is referred to as forward, and the backward direction is referred to as rear. The direction is specified and described. Also, regarding the members located on the left and right, although there is a difference between the left and right,
Since they have substantially the same configuration, only one of the right and left sides will be described, and members having different configurations on the left and right will be described each time.

The base frame 6 is provided with base frame side brackets 7 projecting upward at both left and right end portions thereof, and one ends of an upper link 8 and a lower link 9 constituting the parallel four-link mechanism 4 are respectively connected to the base frame. The other ends of the upper link 8 and the lower link 9 are pivotally connected to an arm-side bracket 10 provided at the upper end of the arm 3, respectively. , 9 and both brackets 7, 1
The parallel four-bar link mechanism 4 is constituted by 0, and the parallel four-bar link mechanism 4 is covered by a link cover 11. At the lower end of the arm 3, as shown in FIG.
An elevating frame 2 for holding the elevating table 1 is attached, the elevating frame 2 holds the elevating table 1 so as to be slidable in the front-rear direction of the vehicle V, and a holding frame for attaching the arm 3 to the elevating frame 2. Cover 12.

The hydraulic cylinder 5 has its cylinder side pivotally connected to a base frame-side bracket 7 so as to be rotatable relative to a pin for pivotally supporting the lower link 9, and its rod side is connected to an arm-side bracket 10. As shown in FIG. 2, by vertically extending and contracting a pair of double-acting hydraulic cylinders 5, which are pivotally connected to pins that pivotally support the upper link 8, the vertical four-link mechanism 4 moves up and down. While the frame 2 and the lift 1 are maintained in a horizontal posture, the lift 1 is moved from the rear of the vehicle V to the outside in a direction away from the vehicle V so as to touch the ground G, or The ascending and descending operation is performed between a descending position A1 for descending to a nearby position and an ascending position A2 for moving in a direction approaching the vehicle V while ascending to rise to substantially the same height as the floor F of the vehicle V. ing

The elevating frame 2 is formed in a U-shape whose upper part is open when viewed from the rear side, and has a plurality of laterally rotating shafts inward from left and right wall surfaces. As shown in FIG. 4, a sliding electric motor 15 having a pinion 14 is attached to the left wall surface, and the right wall surface is , A plurality of guide idler rollers 16 that protrude around the axis in the vertical direction are provided. The elevating table 1 held by the elevating frame 2 is formed in a rectangular shape in a plan view, and rail members 17 and 18 having slightly different shapes are provided on left and right side surfaces thereof, and extend laterally outward. Idler roller 1 that rotates around the axis of the roller
9 are protruded, and the rear edge is opened as an entrance edge for transferring the wheelchair C.

A slide idle roller 13 provided on the left side of the lift frame 2 is fitted into a left rail member 17 provided on the lift table 1.
Sliding idler roller 13 provided on the right side of lifting frame 2
And the guide idler roller 16 are fitted inside. The lift 1 is held slidably in the front-rear direction with respect to the lift frame 2 by a plurality of slide idle rollers 13 provided on the lift frame 2, and the guide idle rollers 16 are provided. The lifting platform 1 is configured to be prevented from swaying with respect to the lifting frame 2.

The left rail member 17 has a rack 2
The pinion 14 is interlocked with the rail member 17, and the pinion 14 is interlocked with the rack 20. 19 rolls on a pair of left and right rails 21 provided on the vehicle V side, and the elevator 1
It is configured to slide back and forth with respect to the lifting frame 2 in the front-rear direction. That is, the slide idler roller 19 is fitted between the vibration preventing member 22 provided at the forefront of the rail 21 and the rail 21 to prevent the vertical movement of the elevator 1 from being inward of the vehicle V. The lifting platform 1 is configured to be slidable over a storage position A3 to the vehicle and the above-described ascending position A2 protruding outward from the vehicle V.

At the front end of the lifting frame 2, a plate-shaped front receiving plate 23 is pivotally mounted so as to be rotatable. The storage posture is substantially horizontal, and the wheelchair C is dropped by swinging upward. It is configured to be able to switch to the standing posture for blocking. As shown in FIG. 5, a rear receiving plate 24 as a plate-like body is pivotally attached to the rear end of the elevating platform 1 so as to be swingable. The movement preventing posture B1 for stopping the movement of C from the elevator 1 and falling, and the elevator frame 2 and the elevator 1 are at the descending position A1, and are swung downward toward the rear side. In the laid-down state, the free end portion is configured to be manually operable to be switched to a movement allowable posture B2 which allows the movement of the wheelchair C by touching the ground G on the ground G. , A handrail 25 is provided.

As shown in FIGS. 6 to 8, the rear receiving plate 24 is fixedly attached to the entrance / exit edge, which is the rear end of the elevator 1, along the longitudinal direction of the edge. Pivotally mounted around the fixed horizontal axis 26, in other words, about the axis L of the fixed horizontal axis 26 as a rocking axis, and
As shown in FIG. 9, cam plates 27 as rotating bodies that rotate integrally with the rear receiving plate 24 about the axis L are provided on the left and right sides of the receiving plate 24. A rear receiving plate 24 is provided between the elevator 1
Coil spring 2 that prevents rotation by its own weight
8 are interposed. Each cam plate 27 is formed in a substantially elliptical shape as a whole, and its peripheral portion is a cam surface 2 as a receiving portion.
7a, a lock notch 27b as an engaged portion is provided on a part of the cam surface 27a. On both sides of the notch 27b, a large protrusion 27c that functions as a restraint mechanism described later and protrudes largely outward from the axis L, and a small protrusion that has a smaller protrusion amount than the large protrusion 27c. 27d.

The elevator 1 is provided with a rotating horizontal shaft 2 in a state close to and parallel to the fixed horizontal shaft 26.
9 is rotatably mounted, and a lock plate 30 having a locking projection 30a as an engagement body is fixed to the left side of the rotation horizontal shaft 29 in a state corresponding to the left cam plate 27. An operation lever 31 as a manual operation tool is attached to 30. Its operating lever 31
Is extended upward so as to penetrate through an opening 17a formed in the left rail member 17, and has a base portion with a sensor member 31a acting on the proximity sensor S provided on the elevator 1. An operation member 32 as an operation unit for manual operation is attached to an upper end portion thereof, and a coil spring 33 as an elastic biasing tool is provided between the lock plate 30 and the lift 1. The lock plate 30
Of the cam plate 27 is elastically contacted with the cam surface 27a of the cam plate 27 by the urging force of the coil spring 33.

As shown in FIG. 11, the operation member 32 has a smooth gentle slope whose surface located on the vehicle V side is gradually located upward from the front to the rear when viewed from the side. A surface on the side inclined away from the vehicle V is configured as a rear vertical surface 32b that is located substantially perpendicular to the upper surface of the rail member 17, and has a shape like a right-angled triangle. The surface 32b is provided integrally with a plurality of ridges 32c as anti-slip projections. The operating lever 3 having the operating member 32
1 is configured to be rotatable about the axis of the rotating horizontal shaft 29, in other words, to be operable to move in the perspective direction with respect to the vehicle V, and to hold the vehicle away from the vehicle V as shown in FIG. In the operating position C1, the locking projection 30
a is engaged with the notch 27b of the cam plate 27 to hold the rear receiving plate 24 in the movement-preventing posture B1, as shown in FIG. In C2, the locking projection 30a is
The rear receiving plate 24 is configured to be capable of being switched to a holding release state in which the switching can be performed by manual operation of the rear receiving plate 24.

That is, by the lock plate 30 having the locking projection 30a and the cam plate 27 having the notch 27b, the holding state in which the rear receiving plate 24 is held in the movement preventing posture B1 and the manual operation of the rear receiving plate 24. An engagement-type holding mechanism E is configured so as to be switchable between a holding release state and a holding release state that allows the switching operation by the user, and by operating the operation lever 31 between the holding operation position C1 and the holding release operation position C2, The engagement type holding mechanism E is configured to be switchable between a holding state and a holding release state.
When the operation lever 31 is in the holding operation position C1, the operation member 32 is moved in the direction along the axis L with respect to the rear receiving plate 24 in the movement preventing posture B1 as shown in FIG. 7, and as shown in FIG. 7, the rear receiving plate 24 is closer to the vehicle V than the end surface of the rear receiving plate 24 that is further away from the vehicle V and is located at a position close to the end surface. It is configured to be.

A lock plate 34 having a locking projection 34a is fixed to the right side of the rotating horizontal shaft 29 in a state corresponding to the right cam plate 27. A lock plate 34 having a lock projection 34a as a lock member and a right cam plate 27 having a notch 27b constitute an engagement type holding mechanism E. A regulating lever 35 is integrally connected to the right lock plate 34. When the elevator 1 is at the storage position A3 in which the elevator 1 is slid forward, the regulating lever 35 is provided on the elevator frame 2. The restricting lever 35, the restricting frame 36, and the large protrusions 27 c provided on the left and right cam plates 27 are configured to contact the restricting frame 36 and restrict the operation amount of the operation lever 31. And the small protruding portion 27d, the elevator 1 is moved to the storage position A.
3, while allowing the switching operation to the storage posture B3 in which the rear receiving plate 24 is swung downward and forward,
A check mechanism K for checking the switching operation to the movement allowable posture B2 is configured.

That is, when the elevator 1 is at the lowering position A1 or the ascending position A2, the operating lever 31 can be moved to the holding releasing operation position C2 which is also the position for switching the movement allowable posture. In the state, the lock projections 30a, 34a of the left and right lock plates 30, 34 are provided.
However, the rear receiving plate 24 can be operated to the retracted position B3 or the movable allowable position B2 by being moved to the side where it is detached not only from the small protrusion 27d of the left and right cam plates 27 but also from the large protrusion 27c. Is configured. However, when the lift 1 is in the storage position A3, the control lever 35
, The operation of moving the operation lever 31 to the holding release operation position C2 is prevented, and the operation lever 31 can be moved only to the storage position switching position C3 on the rear side of the holding release operation position C2. ing.

When the operation lever 31 is in the storage position switching position C3, the left and right locking projections 30a,
34a is operated to move away from the small protrusion 27d of the left and right cam plates 27, but the position is restricted to a position where it does not separate from the large protrusion 27c. Therefore, although the rear receiving plate 24 can be operated to the storage position B3,
By the contact of the large projection 27c with the locking projections 30a and 34a, the operation to the movement allowable posture B2 is prevented from being restrained.
When the lifting platform 1 is in the storage position A3, the position of the rear receiving plate 24 can be changed only between the movement prevention position B1 and the storage position B3.

The lifting device having such a configuration is configured such that the operations of the hydraulic cylinder 5 and the electric motor 15 are all controlled by a control device (not shown).
The control device is configured to receive signals from various sensors (not shown) and is provided with a pendant operation tool 37 that inputs an operation signal to the control device.

Next, the operation control of the lifting device by the control device will be described. In order to transfer the wheelchair C from the inside of the vehicle V to the ground G by using this lifting / lowering device, the lifting / lowering device in the storage state, that is, the storage posture B3 in which the lifting platform 1 is located at the storage position A3 and which falls forward. Of the rear receiving plate 24 is manually moved by manual operation to switch to the movement preventing posture B1. When the rear receiving plate 24 is in the retracted position B3, the urging force of the coil spring 33 causes the locking projections 30 of the left and right lock plates 30, 34 to move.
Since a and 34a abut against the cam surfaces 27a of the left and right cam plates 27 and are received, it is only necessary to swing the rear receiving plate 24 toward the movement preventing posture B1 without operating the operation lever 31. When the left and right cam plates 27 rotate integrally with the operation of the rear receiving plate 24, and the locking notches 27b of the both cam plates 27 come to a position corresponding to the locking projections 30a and 34a, the two locking plates are locked. Projections 30a, 34a
Is engaged in the locking notch 27b, and the rear receiving body 2
4 is automatically held in the movement inhibiting posture B1,
Proximity sensor S is sensor member 3 connected to operation lever 31
By detecting 1a, it is detected that the rear receiving plate 24 is in the movement preventing posture B1.

Then, the wheelchair C is placed on the elevator 1
The rear opening / closing door D is opened, and the lowering button of the pendant-type operating tool 37 is pressed to instruct a lowering command to the control device. In this stored state, a sensor (not shown) detects that the lifting frame 2 is in the storage position A3, and the proximity sensor S detects that the rear receiving plate 24 is in the movement preventing posture B1. Therefore, the slide operation of the lift 1 with respect to the lift frame 2 is allowed, the electric motor 15 for rotation is driven to rotate, and with the rotation of the pinion 14, the lift 1 is moved by the action of the pinion 14 and the rack 20. A slide operation to be drawn toward the lifting frame 2 is performed.

That is, the slide idler roller 19 provided on the lift table 1 rolls on the rail 21 and is drawn toward the lift frame 2, and the slide idle roller 13 provided on the lift frame 2 The guide idler roller 16 is fitted in the left and right rail members 17 and 18 of the lift table 1 and the guide idler roller 16 is fitted in the right rail member 18 and the slide idler roller 13 provided in the lift frame 2 is moved. As a result, the elevating platform 1 reaches the ascending position A2 held by the elevating frame 2, and the front receiving plate 23 that has been in the storage position is rotated upward and switched to the upright position.

When the platform 1 reaches the elevation position A2, a sensor (not shown) detects that the platform 1 is at the elevation position A2, and based on the detection, the electric motor 15 for sliding is stopped. The lifting operation of the lifting frame 2 by the hydraulic cylinder 5 is allowed, and the left and right hydraulic cylinders 5 are shortened. When the hydraulic cylinder 5 is shortened, the lifting / lowering operation in which the lifting / lowering table 1 held by the lifting / lowering frame 2 moves downward while moving backward in a substantially horizontal posture is executed by the action of the parallel four-bar linkage 4. When the lifting frame 2 descends to near the ground G, the lifting frame 2 is moved based on a signal from a sensor (not shown).
And the elevator 1 are slowly grounded to the ground G, and the shortening operation of the hydraulic cylinder 5 is stopped.

Next, in a state where the operating member 32 of the operating lever 31 is moved to the holding release operating position C2 by hand or foot, the rear receiving plate 24 in the movement inhibiting posture B1 is swung to allow the movement allowing posture B2. , And the caregiver pulls backward or moves the wheelchair C by himself / herself and descends on the ground G, and the transfer to the ground G is completed. In addition,
The pendant-type operation tool 3 can be moved while the elevator 1 is being lowered.
The lifting frame 2 and the lifting platform 1 can be stopped at desired positions by releasing the pressing operation on the down button 7. Therefore, for example, the wheelchair C can be lowered on a platform higher than the ground G, and in this case, the rear receiving plate 24 in the movement preventing posture B1 can be switched to the movement allowable posture B2.

In order to transfer the wheelchair C from the ground G to the vehicle V, first, the wheelchair C is placed on the lift 1 and the receiving plate 24 is swung forward after being in the movement allowable posture B2. Then, the operation is switched to the movement preventing posture B1. In this case, the operation lever 31 does not need to be operated. The left and right cam plates 27 are operated in accordance with the operation of the rear receiving plate 24.
Are integrally rotated, and the locking notches 27 of both cam plates 27 are rotated.
When "b" comes to a position corresponding to both locking projections 30a and 34a, both locking projections 30a and 34a are engaged in the locking notches 27b, and the rear stopper 24 is automatically moved to the movement preventing posture B1. Will be retained.

When the rear receiving plate 24 is in the movement-preventing posture B1, the operation of raising and lowering the lifting frame 2 is allowed based on the detection of the proximity sensor S, and the pendant-type operating tool 3
When the lift button 7 is pressed, the left and right hydraulic cylinders 5 are extended, and the lift 4 held by the lift frame 2 moves forward in a substantially horizontal posture by the action of the parallel four-bar linkage 4. Ascending and descending operations are performed. When the lifting frame 2 reaches the lifting position A2, the extension operation of the hydraulic cylinder 5 is stopped based on the detection of a sensor (not shown),
The sliding electric motor 15 is driven to rotate in the direction opposite to the downward movement, the elevator 1 is moved to the original storage position A3, and the front receiving plate 23 in the standing posture is rotated forward. Then, the posture is switched to the storage posture, the operation of the electric motor 15 is stopped based on the detection of a sensor (not shown), and the transfer to the vehicle V is completed.

Thereafter, the operating member 32 of the operating lever 31 is moved by hand or foot to switch the rear receiving plate 24 in the movement preventing position B1 to the storage position B3. In some cases, the movement of the operation lever 31 to the holding release operation position C2 is prevented by the contact of the control lever 35 with the control frame 36, and the control lever 31 can only be moved to the storage posture switching position C3. Therefore, even if it is attempted to swing the rear receiving plate 24 toward the movement allowable posture B2, the large projections 27c of the left and right cam plates 27 abut against the locking projections 30a, 34a of the lock plates 30, 34. The operation to the movement allowable posture B2 side is prevented from being restrained, and only the operation to the storage posture B3 side can be performed. Therefore, the posture of the rear receiving plate 24 is not erroneously changed to the movement allowable posture B2.

[Another Embodiment] (1) In the above embodiment, the lift table 1 is configured to be lifted and lowered by using the parallel four-bar linkage 4 and the hydraulic cylinder 5. The lifting operation can be replaced with, for example, a conventionally known configuration using a threaded rod and a nut member, and can be carried out in various other configurations. In this case, it is not necessary to move the elevating platform 1 at the time of elevating and lowering while moving in a direction away from the vehicle V or ascending while moving to a side approaching the vehicle V as in the previous embodiment. For example, at the time of descent, it may be configured to first move in a direction away from the vehicle V, and to descend after the completion of the movement. It may be configured to move in the approaching direction. Further, the lifting frame 2 and the lifting table 1
In the state where is located at the ascending position A2, the elevating platform 1 is slid inward of the vehicle V with respect to the elevating frame 2 to move to the storage position A3.
The lifting platform 1 is configured to be raised to a position outside the vehicle V, at substantially the same height as the floor surface F of the vehicle V and close to the floor surface F, and thereafter the lifting platform 1 is manually operated. It may be configured to be stored in V.

(2) In the above embodiment, the rear receiving plate 2
Although the example in which the engagement type holding mechanism E including the cam plate 27 and the lock plates 30 and 34 is provided on each of the right and left sides of 4 is shown, it is also possible to provide the engagement type holding mechanism E on only one of the right and left sides. Also, an example is shown in which the cam plate 27 is provided with the large protrusion 27c and the small protrusion 27d that constitute the restraint mechanism K,
The present invention can be implemented without the large projection 27c and the small projection 27d, that is, without the restraint mechanism K. Further, when the restraint mechanism K is provided, the restraint mechanism K may be provided separately from the cam plate 27 constituting the engagement type holding mechanism E.

(3) In the above embodiment, the operation lever 31
Although the example in which the operating member 32 for manual operation is provided at the tip of the above is shown, the operating member 32 can be eliminated, and the upper tip side of the operating lever 31 can be directly operated by hand or foot. When the operating member 32 is provided, various changes can be made in the shape and structure.

(4) In the above embodiment, the wheelchair C is shown as an example of the object to be mounted. However, the object to be mounted on the elevator 1 is not limited to the wheelchair C, but may be an electric appliance or furniture. And various other heavy objects.

(5) In the above embodiment, a wagon vehicle was shown as an example of the vehicle V, and an example in which a lifting device was attached to the rear of the wagon vehicle was shown. It can be applied to various vehicles such as ordinary passenger cars, buses, trucks, etc.
Instead of being mounted at the rear of the vehicle V, the vehicle 1 may be attached to an intermediate portion of the vehicle V in the front-rear direction, and may be configured to lower the elevator 1 to the outside on the lateral side of the vehicle V.

[Brief description of the drawings]

FIG. 1 is a perspective view of a lifting device for a vehicle.

FIG. 2 is a side view showing the movement of the vehicle elevating device.

FIG. 3 is an exploded perspective view of a lifting frame and a lifting platform of the vehicle lifting device.

FIG. 4 is a vertical rear view of a lifting frame and a lifting platform.

FIG. 5 is a plan view of a main part of the elevator.

FIG. 6 is a side view of a main part of the elevator.

FIG. 7 is a side view of a main part of the elevator.

FIG. 8 is a side view of a main part of the elevator.

FIG. 9 is a side view of a main part of the elevator.

FIG. 10 is a rear view of a main part of the elevator.

FIG. 11 is a perspective view of an operation member for manual operation.

FIG. 12 is a side view of a main part of a lift table showing a conventional technique.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 mounting section 24 plate-like body 27 rotating body 27a receiving section 27b engaged section 30a, 34a engaging body 31 manual operating tool 32 manual operating operating section 32a operating section vehicle side surface 32b operating section remote from vehicle Side surface 32c Non-slip projection 33 Elastic urging tool A1 Down position A2 Ascending position B1 Movement inhibiting position B2 Moveable position B3 Storage position C1 Holding operation position C2 Holding release operation position (Moveable position switching position ) C3 Storage position switching position C Placement object E Engagement type holding mechanism F Vehicle floor G Ground K Retraction mechanism L Oscillating axis V Vehicle

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takashi Ozaki 25 Akiike, Yoshiwara-cho, Toyota-shi, Aichi Pref.

Claims (6)

[Claims] A mounting portion of a mounted body is located at an elevation position having the same height or substantially the same height as a floor surface of a vehicle, and on or near the ground, on the side farther from the vehicle than the elevation position. It is provided so as to be able to move up and down freely in a position parallel or substantially parallel to the lowering position, and to have an edge on the side away from the vehicle opened as an entrance edge of the object to be placed. An edge is pivotally attached to the edge around an axis along the longitudinal direction of the edge so as to swing upward so as to prevent the mounted body from moving outward from the mounting portion. The movement-preventing posture moved, and the movement-permitted posture swung downward in the direction away from the mounting portion to allow the mounted body to move outward from the mounting portion. A plate-like body that can be switched by manual operation is provided, and a holding state that holds the plate-like body in the movement preventing position. And an engagement-type holding mechanism that is switchable between a holding release state and a holding release state that allows a manual switching operation of the plate-like body, is provided in the placing portion, and the holding state is set by the movement in the perspective direction with respect to the vehicle. A lifting device for a vehicle provided to be switched by a manually operable tool that can be switched between a holding operation position to be operated and a holding release operation position to be operated in a holding release state, wherein the manual operation tool However, the holding operation position is located on the side farther from the vehicle than the holding release operation position, and in a state of being urged by an elastic urging tool toward the holding operation position, and In the holding operation position, with respect to the plate-shaped body in the movement-preventing posture, the plate-shaped body is positioned close to the side of the side in the direction of the pivot axis of the plate-shaped body, and from the vehicle of the plate-shaped body. From the end face that goes away Vehicle lifting device is provided in a state located proximate and end face thereof on the side closer to both. 2. The plate-like body is manually operable to be switched to a storage position in which the plate-shaped body is swung downward toward a direction approaching the placement unit, and the placement unit is in the raised position. 2. The vehicle according to claim 1, further comprising a check mechanism that allows a switching operation of the plate member in the movement preventing position to the storage position at a certain time and suppresses the switching operation to the movement allowable position. Lifting device. 3. A rotating body which rotates forward and reverse in conjunction with a switching of the posture of the plate-like body, and a cover for the rotating body when the plate-like body is in a movement inhibiting posture. An engaging body that is freely engageable with an engaging portion and is engaged and disengaged by the manual operation tool. A receiving portion for receiving the engagement body urged toward the engagement side by the urging force of the elastic urging tool is adapted to receive the urging force of the elastic urging tool as the plate-like body comes to the movement preventing posture. The vehicle elevating device according to claim 1, wherein the elevating device for a vehicle is provided on the rotating body in a state in which the rotating body is received so as to be engaged with the engaged portion. 4. When the rotating body moves the engaging body engaged with the engaged portion toward the disengagement side to the storage posture switching position, the plate-like body swings to the storage posture. When the plate-like body is allowed to move and the engagement body is moved toward the disengagement side to a movement-permissible posture switching position beyond the storage posture-switching position, the plate-like body is moved in the movement-permissible posture. Wherein the restraining mechanism is configured to switch the storage position of the engagement body engaged with the engaged portion toward the disengagement side at the raised position of the mounting portion. The vehicle elevating device according to claim 3, wherein the lifting device is configured to prevent the vehicle from being moved to the movement allowable posture switching position side beyond the use position. 5. The manual operation tool includes an operation portion for manual operation, and a surface of the operation portion on the vehicle side is configured to be inclined more gradually in a vertical direction than a surface on a side away from the vehicle. The vehicle elevating device according to any one of claims 1 to 4, wherein: 6. The vehicle elevating device according to claim 5, wherein a plurality of anti-slip projections are provided on a surface of the operation unit on a side away from the vehicle.