JPH1053061A - Cargo receiving platform accommodating/holding device of accommodating type cargo receiving platform elevating and sinking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold a cargo receiving platform which is accommodated, certainly in the folded-up condition. SOLUTION: With possibility of elevating and sinking, a cargo receiving platform 7 is mounted through parallel links 4 and 5 on a mounting member 3 furnished at the bottom edge of an cargo accommodating box 1, and the mounting member 3 is arranged as movable along a guide rail 12, wherein the cargo receiving platform 7 is formed in such a way that it can be collapsible on the way of side edge, and the collapsed platform 7 is accommodated in the accommodation part A with movement of the mounting member 3. A holding device 9 is furnished to press the collapsed platform 7 from above with a certain specified force when the platform 7 is accommodated in the part A. The holding device 9 is composed of a link lever 91 fitted at the tip with a pressing member 92, an energizing member 93 to energize the lever 91 in the direction that the pressing member 92 takes refuge upward, and an actuator piece 94 which rotates downward the lever 91 upon contacting with a contacting piece 95 provided on the mounting member 3 when the platform 7 is accommodated in the part A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retractable cradle elevating device in which a cradle is configured to be stowable in a storage portion formed below a packing box, and more particularly, to a cradle stored in a storage portion. The present invention relates to a receiving table storage and holding device that performs the following.

[0002]

2. Description of the Related Art Conventionally, as a retractable loading / unloading device,
As seen in Japanese Utility Model Laid-Open No. 4-24832, an attachment member is provided movably in the front-rear direction below the rear portion of the packing box, and a loading table is provided on the attachment member via a link mechanism.
An apparatus is provided in which the loading pallet elevating device is stored below the rear portion of the packing box by moving the mounting member in front of the packing box in a state where the packing box is folded.

[0003]

However, in the above-mentioned prior art, since the receiving tray is simply stored in the storage section in a short folded state, the folded receiving tray is raised due to vibration during traveling. In addition, there is a problem that the spring member jumps up and comes into contact with a peripheral member to cause damage.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide a storage container storage and holding device that reliably holds a stored storage container in a folded state.

[0005]

According to a first aspect of the present invention, there is provided a storage container storage and holding device for a storage type storage device elevating device, wherein two parallel links are attached to a mounting member provided at a bottom edge of a packing box. The loading table is configured to be able to move up and down freely, and the mounting member is movably provided on the inner side of the packing box along the guide rail provided at the bottom of the packing box, while the loading table is located at the middle of the side edge. A retractable loading / unloading device that is configured to be foldable and is configured to be able to be stored in a storage portion formed below a packing box, wherein the loading cradle and two parallel links that are folded by movement of the mounting member are included. When the loading tray and the two parallel links are stored in the storage section, a holding device is provided for pressing the folded loading tray from above with a predetermined force.

According to a second aspect of the present invention, in the storage container storage and holding device of the storage type storage device lifting device, the holding device includes:
A link lever disposed in the storage portion, the base end of which is pivotally supported, and having a pressing member at the distal end; a biasing member for biasing the link lever in a direction in which the pressing member is retracted upward; and a link lever. When the load receiving table is stored in the storage section, the link lever comes into contact with the contact piece fixed to the mounting member, so that the link lever opposes the urging force of the urging member. And an operating piece that is rotated downward.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic overall configuration of an opening / closing lid opening / closing device in a storage portion of a retractable loading / unloading device according to the present invention.

In FIG. 1, reference numeral 1 denotes a vehicle frame 1 of a vehicle, for example.
The loading box 1 is provided with a loading tray lifting device 2 at the lower rear end of the loading box 1.

The loading tray lifting device 2 has two parallel links including a mounting member 3 provided on a vehicle frame 11 and an upper link 4 and a lower link 5 each having a base end pivotally supported by the mounting member 3. And a load receiving table 7 provided at the distal end of the two parallel links, and is configured to be freely storable in a storage section A formed in a vehicle frame 11 below the packing box 1. is there.

The mounting member 3 is provided movably in the front-rear direction along a guide rail 12 disposed at the rear end of the vehicle frame 11 in the front-rear direction. More specifically, two upper guide rollers 31 and one lower guide roller 32 provided on the mounting member 3 are arranged so as to sandwich the guide rail 12 from above and below, and these upper and lower guide rollers 31 and 32 are used as guides. By rolling the rail 12, the mounting member 3 moves smoothly back and forth.

At the rear end of the guide rail 12, the pivot point of the two parallel links pivotally supported by the mounting member 3 when the mounting member 3 moves to the rearmost position of the guide rail 12 is the packing box 1. The length is set to slightly protrude from the rear end.

The above-mentioned mounting member 3, upper link 4, lower link 5, and guide rail 12 are provided as a pair of left and right.

An operation handle 33 is provided on one of the mounting members 3. As shown in FIG. 2, the operation handle 33 includes a shaft member 34 supported by one of the mounting members 3.
Are provided rotatably in both forward and reverse directions. Shaft member 34
A sprocket 35 is provided integrally with the rotating shaft 3 which is rotatably supported between the sprocket 35 and a pair of left and right mounting members 3.
6 and a sprocket 37 provided at one end of the chain 3
It is wound at 8.

On the rotating shaft 36, racks 39 provided below the pair of left and right guide rails 12, respectively.
b, and a pinion 39a is provided for engaging the sprockets 35, 3
7. By rotating the pinion 39a in the forward and reverse directions via the rotation shaft 36, the pair of left and right mounting members 3 are configured to be moved back and forth along the guide rail 12 in a synchronized state.

As described above, the upper link 4 and the lower link 5 have their base ends pivotally connected to the mounting member 3 respectively.
When the mounting member 3 moves to the rearmost position of the guide rail 12, the positions of the pivots 41, 51 are changed to
Is provided so as to protrude from the rear end.

Each of the distal ends of the upper link 4 and the lower link 5 is connected to a bracket 7 provided in the middle of the side edge of the loading table 7.
The pivots 42 and 52 are connected to one.

The upper link 4 is configured to be bendable in the middle. More specifically, the upper link 4 is bent downward in a U-shape when the ends of the two link members 4a and 4b are pivotally supported at the upper portion and the ends match.

In other words, since the two link members 4a and 4b are arranged in a substantially straight line from a downwardly-curved shape, the length between both ends pivotally supported by the mounting member 3 and the loading tray 7 is reduced. become longer.

A base end of a cam member 43 is connected above an end of the link member 4a, and a tip end of the cam member 43 is engaged with a locking member 44 fixed on the upper surface of the link member 4b. I have.

The upper link 4 is provided with the mounting member 3.
An extendable rod of a lift cylinder 45 provided at the upper end of the upper link 4 is vertically connected by an extendable operation of the lift cylinder. The lower link 5 is similarly rotated by the rotation, so that the loading table 7 can be moved up and down.

The receiving table 7 is formed in a relatively thin plate-like body as a whole by a distal member 7a and a proximal member 7b, and the bracket 71 is fixed to a distal portion of the proximal member 7b. Have been. Further, the distal member 7a and the proximal member 7
The upper member 72b allows the distal-side member 7a to be folded in two on the upper surface of the proximal-side member 7b.

A grounding roller 73 protrudes from the base bottom of the base member 7b to support the load receiving table 7 when it reaches the ground, and a wedge-shaped lower surface 74 of the tip member 7a is formed. When the receiving platform 7 reaches the ground, the tip is configured to contact the ground without any step.

Further, a support member 3a, which supports the distal end portion of the folded distal end member 7a from below when the load receiving table 7 described later is stored, is protruded rearward from the mounting member 3. . The supporting member 3a has a tip-side member 7a.
Is supported, the tip-side member 7a folded in two
And the base end member 7b are arranged in a substantially parallel state.

The vehicle frame 11 is provided with a cover 8 for covering the outer periphery of the loading / unloading device 2 when the loading / unloading device 2 configured as described above is stored. Form the storage section A described above.

The cover body 8 has its rear part opened as an access port for the loading / unloading device 2, and an opening / closing lid 81 is provided at the rear part so as to be openable and closable. The opening / closing lid 81 is configured to be openable and closable by an interlocking device (not shown) in conjunction with the storage operation of the loading / unloading device 2. That is, the opening / closing lid 81 is closed when the loading / unloading device 2 is stored in the storage unit A, and is opened when it is removed from the storage unit A.

Further, the front end member 7a of the receiving tray 7 folded in two at the time of storage is pressed from above into the storage part A,
A holding device 9 for holding the support member 3a is provided.

As shown in FIG. 3, the holding device 9 includes a link lever 91 whose base end is pivotally supported at the front end of the guide rail 12. A pressing member 92 made of rubber or the like for pressing the tip of the tip side member 7a from above is provided.

The link lever 91 includes a spring 93 interposed between the link lever 91 and the guide rail 12.
Accordingly, the pressing member 92 is urged in a direction to retract upward.

An operating piece 94 is connected to the base end of the link lever 91. The operation piece 94 is provided on the receiving table 7.
When is stored in the storage portion A, the link lever 91 rotates downward against the urging force of the spring 93 by contacting the contact piece 95 fixed to the mounting member 3. The distal end pressing member 92 is pressed against the distal end of the distal end side member 7 a of the load receiving table 7.

Reference numeral 96 in FIG. 3 is a stopper for preventing the spring 93 from rotating the link lever 91 upward.

Next, the operation of the loading / unloading device 2 configured as described above will be described.

First, as shown in FIG. 1, the loading member 3 is moved to the rearmost position of the guide rail 12 to unload the cargo by the receiving tray 7, and the leading end member 7a constituting the receiving tray 7 and the base end side. After arranging the member 7b on the same plane, the upper link 4 is rotated by the expansion / contraction operation of the lift cylinder, so that the load receiving table 7 is moved up and down between the ground and the floor 1a of the packing box 1.

At this time, the loading tray 7 is located at the highest position located on the same plane as the floor surface 1a of the packing box 1 indicated by a dashed line in FIG. 4, and the ground roller 73 of the loading tray 7 is grounded to the ground. Until the position, the cam member 43 maintains the state in which the cam member 43 is locked by the locking member 44. For this reason, the upper link 4 and the lower link 5 are pivoted up and down with the respective pivot points 41, 51, 42, and 52 holding a parallelogram, and as a result, the loading tray 7 is kept horizontal. Ascend and descend in a state where it is done.

When the receiving table 7 is raised to the highest position, the base end of the receiving table 7 is located close to the rear end of the floor of the packing box 1, and the receiving table 7 and the packing box The luggage can be smoothly transferred between the first floor 1a and the floor 1a.

At this time, the pivotal positions of the base ends of the upper link 4 and the lower link 5 pivotally supported by the mounting member 3 project slightly rearward from the rear end of the packing box 1 as shown in FIG. The upper link 4 and the lower link 5 are pivotally supported at the middle of the side edge of the loading tray 7 via the bracket 71, and the upper link 4 and the lower link 5 The whole is arranged behind the rear end of the packing box 1, there is no possibility of interference with the packing box 1 and the vehicle frame 11, and there is no need to devise the shape of the upper link 4 or the like.

Further, since the respective distal end portions of the upper link 4 and the lower link 5 are pivotally supported at the middle of the side edge of the load receiving table 7 via the bracket 71, the base end of the load receiving table 7 is conventionally provided. It is more advantageous in terms of strength than the pivoted one,
Can be reduced in weight.

Next, when the load receiving table 7 is lowered and the ground roller 73 is grounded on the ground, the cam member 43 comes into contact with the tip of the support member 3a, and the upper link 4 is further rotated downward. The cam member 43 separates from the locking member 44,
The upper link 4 changes from a V-shaped state to a linear state.
As a result, the length between the both ends pivots 41 and 42 of the upper link 4 becomes longer, and the state of the parallelogram collapses. As a result, the tip of the loading tray 7 tilts downward and touches the ground, and the transfer of the load between the loading tray 7 and the ground can be performed smoothly.

Further, the receiving table 7 is placed on the floor 1 of the packing box 1 from the ground.
In the case of ascending, the load receiving table 7 tilted by the operation opposite to the above-described operation is held in a horizontal state and moves up and down.

As described above, by simply changing the upper link 4 from the bent state to the straight state or from the straight state to the bent state, the loading tray 7 can be tilted on the ground and the loading tray 7 is held horizontally. It is possible to move up and down in a state where it has been moved.

Next, a case where the loading / unloading device 2 is stored after the loading / unloading of the load by the loading / unloading device 2 is completed will be described.

First, as shown in FIG. 1, the upper link 4 is rotated to a position where the lower link 5 is substantially horizontal, and the distal end member 7a of the loading tray 7 is placed on the upper surface of the base end member 7b. The supporting member 3
a.

In this state, by rotating the operation handle 33 to rotate the pinion 39a, the mounting member 3 is moved forward by the action of the rack 39b with which the pinion 39a is engaged. The entire elevating device 2 is stored in the cover body 8 from the access opening at the rear of the cover body 8.

In this storage, when the mounting member 3 reaches a position just before the storage end position, the contact piece 9 of the mounting member 3 is closed.
5 abuts against the operating piece 94, rotates the link lever 91 downward against the urging force of the spring 93, and when the mounting member 3 is completely located at the retracted position, the pressing member 92 of the link lever 91 receives the load. The tip of the tip side member 7a of the base 7 is pressed from above (see FIG. 5).

As a result, the distal end side member 7a of the receiving table 7
The state of being supported on the support member 3a is maintained, so that it can be stably stored without jumping up due to vibration during traveling.

When the loading / unloading device 2 is completely stored as described above, the opening / closing lid 81 closes the rear portion of the storage unit in conjunction with the storage operation.

In this embodiment, the operation handle 3
Although the description has been made on the case where the attachment member 3 is moved by the operation member 3, the attachment member 3 may be moved not by the rotation of the operation handle 33 but by the rotation of the drive motor or by the expansion and contraction operation of the telescopic cylinder. .

[0048]

According to the storage tray storage and holding device of the retractable storage tray lifting / lowering device of the present invention, the storage tray stored in the storage unit is pressed from above and held at that position. Can be held in a stable manner, and the loading tray does not bounce unnecessarily due to vibration during traveling, which can prevent interference between the loading tray and peripheral members, and can cause damage to the loading tray and peripheral members. Absent.

[Brief description of the drawings]

FIG. 1 is a side view showing the overall configuration of a loading tray elevating device.

FIG. 2 is a cross-sectional view showing a moving mechanism for moving a loading tray elevating device back and forth.

FIG. 3 is an enlarged side view showing the configuration of the holding device.

FIG. 4 is a side view showing an elevating operation of the loading tray elevating device.

FIG. 5 is a side view showing the stored loading tray elevating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Packing box 12 Guide rail 2 Loading table elevating device 3 Mounting member 4 Upper link 5 Lower link 7 Loading table 9 Holding device 91 Link lever 92 Pressing member 93 Spring (biasing member) 94 Operating piece 95 Contact piece A Storage section

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroaki Saeki 3-4-2-3 Shirite, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Shin-Meiwa Auto Engineering Co., Ltd.

Claims (2)

[Claims] 1. A load receiving table is configured to be able to move up and down via two parallel links on a mounting member provided on the bottom edge of the packing box, and the mounting member is mounted on a guide rail provided on the bottom of the packing box. Along the inside of the cargo box along
A retractable structure in which the receiving table is configured to be foldable in the middle of the side edge, and the receiving table and two parallel links that are folded by the movement of the mounting member are configured to be stored in a storage section formed below the packing box. A loading tray elevating device, wherein when the loading tray and the two parallel links are stored in the storage unit, a holding device that presses the folded loading tray from above with a predetermined force is provided. Storage and storage device of a retractable loading and unloading device. 2. The linking device according to claim 1, wherein the holding device is disposed in the storage portion, and has a base end pivotally supported and a link lever having a pressing member at a distal end, and a link lever in a direction in which the pressing member retracts upward. The urging member to be urged and the link lever are connected to the base end of the link lever, and when the load receiving tray is stored in the storage unit, the link lever is brought into contact with the abutting piece fixed to the mounting member. 2. A storage rack storage and holding device for a storage rack according to claim 1, further comprising an operation piece which rotates downward against the urging force of said urging member.