JP3045016B2 - Guide plate of vehicle loading / unloading cradle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide plate of a lifting device for a vehicle, and more particularly to an improvement in the structure of a guide plate having a simple structure and easy operation.

[0002]

2. Description of the Related Art In recent years, in order to easily lift and lower a heavy object to and from a vehicle carrier, a loading platform (platform) which is elevated by a link mechanism or the like has been installed. Such a platform is usually made of a thick frame material in order to maintain strength, and a step is formed between the platform and the road surface when descending. For example, an occupant sitting in a wheelchair is quickly placed on the platform. It is difficult. Therefore,
A guide plate that forms an inclined surface with the road surface is provided at an edge of the platform to eliminate the step.

Japanese Patent Application Laid-Open No. 62-152937 discloses one of such guide plates which is used as a safety device such as a wheel stopper by flipping up the guide plate after a wheelchair is placed thereon.
However, the guide plate described in this publication has a relatively complicated lock mechanism and operation mechanism, which increases the cost.

For this reason, for example, a conductive plate 7 as shown in FIG. 3 is used. This is provided with a support shaft 72 at an end edge of a frame member 21 constituting a side portion of the platform 2, and the support shaft 72 is attached to the support shaft 72. The base end 71 of the conductive plate 7 is rotatably connected. Thus, the tip of the conductive plate 7 comes into contact with the road surface E in the tilted state shown in FIG.
An inclined surface extending from the road surface E to the platform 2 is formed.

A cam surface 71a is formed on the outer periphery of the base plate 71 around the support shaft 72, and one end of an operation bar 8 provided on the frame member 21 is provided in a recess of the cam surface 71a at the upright position. The guide plate 7 is fitted to prevent the rotation of the conductive plate 7. The operation bar 8 has its center rotatably connected to the support shaft 81 and is urged counterclockwise by a spring material (not shown).

When the guide plate 7 is rotated to the upright position, the recess of the cam surface 71a engages with one end of the operation bar 8 to fix the guide plate 7 at the upright position. In order to rotate the guide plate 7 from the standing position to the inclined position, the other end of the operation bar 8 is pulled up in the direction of the arrow, and one end of the operation bar 8 is disengaged from the recess of the cam surface 71a. The rotation of the plate 7 becomes possible.

[0007]

Although such a conductive plate has a relatively simple structure, it takes time and effort to form the cam surface, and the operator needs to bend down greatly every time the operation bar is operated. Therefore, there is a problem that operability is difficult.

An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to provide a guide plate for a vehicle lifting and lowering cradle having a simple structure and excellent operability.

[0009]

According to a first configuration of the present invention, a loading platform 2 which is raised and lowered between a loading platform of a vehicle and a road surface.
And a guide plate 1 that forms an inclined surface between the edge of the load receiving table 2 and the road surface E in order to eliminate the step of the load receiving table 2,
The base end of the guide plate 1 is rotatably supported on the edge of the loading table 2 so that the leading end 11 of the guide plate is in contact with the road surface E and the inclined position of the leading end 11 is substantially vertically upward. The guide plate 1 is provided with locking members 3A and 3B which are protruded from the rear by being spring-biased, and the one side surface 3a of the distal end 31 of the locking members 3A and 3B is curved. On the other hand, a stopper body 4 is provided on the side of the load receiving table 2 on the side of the load receiving table 2 so as to protrude into the movement trajectory of the locking portion tip 31 when the guide plate 1 rotates. When the upper member 1 rotates upward, the side surface 3a, which forms the curved surface of the locking member tip 31, comes into contact with the stopper body 4 so that the locking members 3A and 3B are retracted against the spring force and the conductive plate 1 is moved. When reaching the upright position, the distal ends 31 of the locking members 3A, 3B having climbed over the stopper body 4 advance again and change their planes. The side surface 3b abuts against the stopper body 4 to prevent the return movement of the guide plate 1 in the tilting direction, and the guide plate 1 is provided with the locking member 3 at a position near the tip 11 thereof. Pull handle 5 to retreat against spring force
Is provided.

In the second configuration of the present invention, the locking member 3
A and 3B are provided at left and right positions near the base end of the conductive plate 1, respectively. The grip 5 is formed by bending a rod body into a mountain shape, and both ends 51 and 52 are connected to the locking members 3A and 3B. At the same time, the top 53 is positioned near the leading end of the conductive plate 1.

[0011]

In the first configuration, when the guide plate 1 is set to the upright position, the guide plate 1 is lifted as it is and is rotated upward, and the distal ends 31 of the locking members 3A, 3B cause the stopper body 4 to move. get over. Further, when allowed to rotate the conductive plate 1 to the upright position, the locking member 3A, 3B of the tip 31 is again advanced to the side surface 3 b of the return rotation guide plate 1 in contact with the stopper member 4 and forming a plane Is blocked.

When the guide plate 1 is tilted, if the pulling handle 5 is operated to retract the locking members 3A, 3B, the contact with the stopper body 4 is released, and the guide plate 1 tilts and turns. Becomes possible.

According to such a structure, unlike the conventional conductive plate, it does not take much time to form the cam surface, but has a simple structure in which only the stopper body 4, the locking members 3A, 3B, and the grip 5 are provided. 1 can be tilted and raised. Further, since the pulling hand 5 is provided at a position close to the leading end of the conductive plate 1 which is upward at the standing position, it is possible to quickly operate without bending down the body.

In the second configuration, the locking members 3A and 3B provided on the left and right are simultaneously moved backward by a simple configuration.

[0015]

【Example】

[Structure] FIG. 1 is a side view of a conductive plate, and FIG. 2 is a front view thereof. In FIG. 1, a platform 2 which is lifted and lowered by a lifting mechanism (not shown) is located slightly above a road surface E, and L-shaped channel members 21 and 22 forming both side edges thereof.
A support shaft 6 is provided at the rear end (right side in FIG. 1) of FIG. The illustrated conductive plate 1 is in an upright position in which the tip 11 faces vertically upward, and functions as a wheel stopper or the like when a wheelchair is placed on the platform 2.

The conductive plate 1 has a horizontally long rectangular plate (FIG. 2).
2 and 13 are joined at an interval in the front and rear so as to form a vertically long space S (FIG. 1) between them, and the front (left side in the figure) plate 12 is higher than the rear plate 13. It extends long and bends diagonally in the middle. A rectangular plate-shaped bracket 14 is joined to the lower ends of the plate members 12 and 13 extending in parallel so as to close the space S from the left and right, and the lower end (base end) of each bracket 14 is connected to the support shaft 6. It is rotatably connected.

In the space S of the conductive plate 1, the left and right brackets 1 are provided.
Locking members 3A and 3B are provided at positions close to 4, respectively. Each of the locking members 3A and 3B has a vertically long housing 32 that opens downward, and a locking claw 31 whose rear is biased from the housing 32 projects downward from the housing 32. The locking claw 31 has a front side surface 3a having a substantially arc-shaped curved surface, and a rear side surface 3b.
Is a plane.

The rear side surface 3b of the locking claw 31 is in contact with the stopper body 4 at the guide plate standing position shown in the figure. The stopper body 4 is made of a round bar material, and is supported and fixed to the platform 2 side by a bracket 41. Locking claw 3
The guide plate 1 is prevented from rotating in the tilting direction (arrow in FIG. 1) because the rear side surface 3b, which forms the plane of FIG.

A plate-like base portion 33 extending from the locking claw 31 projects upward from the housing 32 of each of the locking members 3A, 3B. The base portions 33 are connected to each other and pulled into the space S. A handle 5 is provided. The pull handle 5 is formed by bending a pipe material into a substantially mountain shape (FIG. 2).
Numerals 1 and 52 crush the pipe material into a flat plate shape and bolt it to the base end 33, respectively.
Reference numeral 3 is located above and near the leading end 11 of the conductive plate. An opening 15 for operation is provided in the plate 13 at a position corresponding to the top 53 of the handle 5.

[Operation] When the guide plate 1 is tilted, the top 53 of the handle 5 is grasped and pulled up from the opening 15 located above, and the right and left locking claws 31 are inserted through the respective base ends 33. Is retracted upward at the same time against the spring force, and the engagement with the stopper body 4 is released. As a result, the guide plate 1 can be tilted and rotated backward, and when the tip 11 is tilted until it comes into contact with the road surface E, as shown by a chain line in FIG. Is done. In this case, since the top part 53 of the pull handle 5 is located above, the operation can be easily performed without greatly bending the body.

When rotating the conductive plate 1 to the upright position, the conductive plate 1 is lifted in the upright direction. The front side surface 3a of the locking claw 31 abuts on the stopper body 4 during the rotation. However, since the front side surface 3a has a substantially arc-shaped curved surface, it does not engage with the stopper body 4 and thus does not engage with the stopper body 4. And the locking claw 31 retreats. When the guide plate reaches the standing position, the locking claw 31 that has passed over the stopper body 4 advances again, and the rear surface 3b, which forms a plane, as shown in FIG.
, And the return rotation in the tilting direction is prevented.

The front surface of the locking claw does not necessarily have to be substantially arcuate, and the stopper body does not necessarily have to have a circular cross section.

[0023]

As described above, according to the guide plate of the lifting platform for a vehicle according to the present invention, the structure is simple and inexpensive, and the body does not need to bend down frequently during operation.

[Brief description of the drawings]

FIG. 1 is a side view of a conductive plate provided on an edge of a loading tray, showing one embodiment of the present invention.

FIG. 2 is a front view of the conductive plate in an upright state.

FIG. 3 is a side view of a conductive plate provided on an edge of a loading tray, showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Leading board 11 Leading board tip 2 Platform (load receiving stand) 3A, 3B Locking member 3a Front side (one side) 3b Rear side (other side) 31 Locking claw (locking member tip) 4 Stopper body 5 Pull handle 51 , 52 Both ends 53 Top

Claims (2)

(57) [Claims] 1. A conductive plate provided on a loading platform that is raised and lowered between a loading platform of a vehicle and a road surface, and forming an inclined surface between an edge of the loading platform and a road surface to eliminate a step of the loading platform. hand,
The base end of the guide plate is rotatably supported on the edge of the loading table, and pivots between an inclined position where the leading end of the guide plate contacts the road surface and an upright position where the leading end of the guide plate faces substantially vertically upward. The guide plate is provided with a locking member projecting behind the spring by being biased by a spring, and one end of the locking member is formed into a curved surface and the other side is formed into a flat surface. A stopper body is provided on the table side to protrude into the movement trajectory of the tip of the locking member when the guide plate is rotated. When the guide plate is turned upward, the side surface forming the curved surface of the tip of the locking member is the stopper. The locking member is retracted against the spring force against the body, and when the guide plate reaches the upright position, the tip of the locking member that has passed over the stopper body advances again to form its plane. The side surface abuts against the stopper body to prevent the return rotation of the conductive plate in the tilting direction, and the conductive plate has A position close to the tip, the vehicle lift receiving platform of the guide plate, characterized in that a pull handle which allowed to retract the locking member against the spring force. 2. The locking member is provided at each of left and right positions near the base end of the conductive plate, and the handle is formed by bending a rod into a mountain shape and connecting both ends to the locking member. 2. The guide plate of a lifting and lowering cradle for a vehicle according to claim 1, wherein a top portion thereof is positioned close to a tip of the guide plate.