JPH0439072Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a rear gate storage and holding structure.

(b) Conventional Technology Conventionally, transport vehicles such as refrigerated refrigerated vehicles have double doors that can be opened and closed at the rear of the cargo box, and the double doors can be opened to allow loading and unloading of cargo.

Moreover, a rear gate is attached to the rear end of the vehicle body frame, which allows cargo to be raised and lowered from the ground to the height of the cargo box, making it easier to load and unload cargo.

When the transport vehicle moves, the rear gate can be stored in an upright position along the double door, and the rear gate in the stored state is connected and held to the cargo box by a connecting holder.

(c) Problems to be solved by the invention However, the double door of the above-mentioned shipping box has a 180-degree angle to allow for efficient loading and unloading of cargo.
In order to be able to open the rear gate more than once, the connecting holder for the liftgate when stored had to be placed in a position where it would not interfere with the double door when opened, making the structure of the connecting holder complicated. .

(d) Means for solving the problem Therefore, in the present invention, opening/closing doors are attached to the rear ends of the left and right side walls of the cargo box mounted on the vehicle body frame via rotating pieces so that they can be opened and closed in the form of double doors. The rotating piece forms an interference avoidance space between the base end surface of the opening/closing door and the rear end surfaces of the left and right side walls of the loading box, allowing the opening/closing door to be opened outward by more than 180 degrees, and the left and right side walls of the loading box. At the rear end surface, each locking piece is rotatably moved from a horizontally protruding state to an upright state in the interference avoidance space, and is elastically supported by being biased in the upright storage direction, while a lift arm is attached at the rear end of the vehicle body frame. The rear gate is attached to the rear gate so that it can be horizontally raised and lowered and stored in an upright position, and locking arms are provided on the left and right sides of the rear gate that can be engaged with and detached from the locking piece when the rear gate is stored in a raised and raised position along the opening/closing door. It is an object of the present invention to provide a rear gate storage and holding structure.

(E) Function/Effect When loading/unloading cargo into/from a cargo box, open the opening/closing door outward by more than 180 degrees, and in the same state, operate the rear gate horizontally to raise/lower. At this time, the locking pieces attached to the rear end surfaces of the left and right side walls of the cargo box are elastically supported in the upright storage state within the interference avoidance space that is formed when the door is opened. There is no interference with.

In addition, when moving the vehicle body after such work is completed, the opening/closing door is closed, the rear gate is raised up along the opening/closing door, and the rear gate is placed in the stowed state, and the locking piece is then horizontally protruded against the elastic biasing force. After the rear gate is in the stored state, the rear gate can be held in the stored state by locking the locking arms provided on the left and right sides of the rear gate with the locking pieces.

Furthermore, when the engagement between the locking arm and the locking piece is released, since the locking piece is biased in the upright storage direction, it automatically restores the upright storage state and then opens and closes the door. Even when opened over 180 degrees, there is no interference between the opening/closing door and the locking piece as described above.

As described above, according to the present invention, the structure can be simplified and the rear gate can be reliably stored and held.

(F) Example The example of the present invention will be explained in detail based on the drawings.
A shown in FIG. 1 is a refrigerated refrigerated vehicle, and 1 is a body frame, 2 is a driving section, 3 is a cargo box, 4 and 5 are front and rear wheels, and 6 is a rear gate device.

In addition, in FIGS. 2, 3, and 5, 7,
7' is an opening/closing door forming the rear wall of the cold storage box 3;
The opening/closing doors 7, 7' have their base ends attached to rotating pieces 8, 8 whose base ends are pivoted to the rear end surfaces 3a, 3a of the left and right side walls of the refrigerated cargo box 3, and open 270 degrees outward. It is configured to be openable.

In FIG. 5, S is an interference avoidance space formed between the base end surfaces of the opening/closing doors 7, 7' when opened and the left and right side wall end surfaces 3a, 3a of the cargo box 3.

Further, the rear gate device 6 is shown in FIG. 1, FIG.
As shown in FIG. 4, a lift arm 6a whose base end is attached to the rear end of the vehicle body frame 1 so as to be movable up and down.
, a rear gate 6b whose base end is attached to the tip of the lift arm 6a so that it can be raised and lowered from a horizontal use state to an upright storage state, a lifting cylinder 6c that raises and lowers the rear gate 6b, and a lift arm 6a that rotates. It consists of a rotation cylinder (not shown) for operation.

The rear gate device 6 allows the rear gate 6b to be raised and lowered in a horizontal state from the ground to the floor level of the refrigerated cargo box 3 using the raising/lowering cylinder 6c and the rotating cylinder, and also raises and lowers the rear gate 6b at the highest position. It is made to stand up close to the opening/closing doors 7, 7' so that it can be placed in a stored state.

Moreover, locking arms 9, 9 are provided on the left and right sides of the rear gate 6b, and the arms 9, 9 are connected to the refrigerated cargo box 3.
Locking pieces 1 provided on the left and right side wall rear end surfaces 3a, 3a of
0 and 10 so that the upright storage state can be maintained.

In such a configuration, the gist of the present invention lies in the storage and holding structure of the rear gate 6b, as shown in FIGS.
This will be explained in detail based on Figure 6.

That is, the locking arm 9 of the rear gate 6b
is formed into an L-shape by a horizontal part 9a and a vertical part 9a, and the horizontal part 9a is attached to the middle part of the left and right frames 11, 11 of the rear gate 6b so as to be slidable and rotatable in the left and right width direction. A spring 12 is wound around the proximal peripheral surface of the horizontal portion 9a, and the spring 12 urges the horizontal portion 9a inward.

The vertical portion 9b is formed to extend in a perpendicular direction from the tip of the horizontal portion 9a, and the vertical portion 9b and the horizontal portion 9a
The corner 9c formed by the locking piece 10 can be slid against the biasing force of the spring 12 to an outer position facing the locking piece 10.

Reference numeral 13 denotes a vertical portion holder attached to the left and right frames 11, 11, which holds the vertical portion 9b in an upright state.

In addition, the rear end surfaces 3a, 3a of the left and right side walls of the cold storage box 3
A support bracket 14 that supports the locking piece 10 is attached to the middle part, and the locking piece 1 is attached to the bracket 14.
The base end of the locking piece 10 is rotatably supported from a horizontally protruding state to an upright storage state, and the locking piece 10 is supported by a spring 1.
5 biases it in the upright storage direction. 16 is a pivot pin.

The locking piece 10 is positioned so that the distal end locking portion 10a is perpendicular to the axis of the horizontal portion 9a of the locking arm 9 in a horizontally protruding state.

Moreover, as shown in FIG. 5, the support bracket 14 is provided within the interference avoidance space S mentioned above, and the locking piece 10 attached to the bracket 14 is also accommodated within the same space S in the upright storage state. This prevents interference with the opening/closing doors 7, 7' when opened.

The embodiment of the present invention is constructed as described above, and when storing and holding the rear gate 6b, the locking piece 10 is made into a horizontally protruding state by applying the force of the spring 15 to the hole, and the locking piece 10 is made to protrude horizontally. The locking arm 9 is pulled out against the bias of the spring 12, and the locking piece 10 is pulled out.
If the vertical part 9b in the upright state is reversed by 180 degrees at a point perpendicular to the end latching part 10a of the arm 9, the corner 9c of the arm 9 can be latched to the latching part 10a. It is.

At this time, the locking piece 10 pushes the horizontal part 9a of the locking arm 9 upward by the spring 15, while the vertical part 9b of the locking arm 9 presses the locking piece 10 inward by the spring 12. Therefore, the mutual engagement becomes strong, and the storage and retention of the rear gate 6b can be ensured.

Further, when the vertical portion 9b of the locking arm 9 is in an upright state, it can smoothly slide inward due to the biasing force of the spring 12, and the engagement with the locking piece 10 is released and the same occurs. The locking piece 10 is also smoothly restored to the upright storage state by the biasing force of the spring 15.

Since the locking piece 10 restored to the upright storage state is accommodated within the interference avoidance space S, the opening/closing door 7,
Even if the opening/closing door 7' is opened over 270 degrees, the opening/closing door 7,
7' does not interfere with the locking piece 10.

[Brief explanation of the drawing]

FIG. 1 is a side view of a refrigerated refrigerated vehicle having a rear gate storage and holding structure according to the present invention. Figure 2 is a rear view of the main parts. Figure 3 is a partially enlarged rear view of the main parts. FIG. 4 is an enlarged side view of the main part. Figure 5 shows
An enlarged plan sectional view of the main part. FIG. 6 is an enlarged perspective view of the main part. A... Freezer/refrigerator truck, S... Interference avoidance space, 3...
...Logging box, 3a... Rear end surfaces of left and right side walls, 6a... Lift arm, 6b... Rear gate, 7, 7'... Opening/closing door, 8... Rotating piece, 10... Locking piece.

Claims (1)

[Scope of Claim for Utility Model Registration] (a) Opening/closing doors 7, 7' are attached to the rear ends of the left and right side walls of the cargo box 3 mounted on the vehicle body frame 1 so that they can be opened and closed in a double-door shape via rotating pieces 8, 8. With,
The rotating pieces 8, 8 form an interference avoidance space S between the base end surfaces of the opening/closing doors 7, 7' and the rear end surfaces 3a, 3a of the left and right side walls of the cargo box 3.
can be opened outward by more than 180 degrees, and (b) locking pieces 10 are installed on the rear end surfaces 3a, 3a of the left and right side walls of the cargo box 3, respectively, from a horizontally protruding state to an interference avoidance space S.
The lift arm 6 is rotatable inward to the upright position, and is elastically supported by being biased in the upright and retracted direction.
The rear gate 6b is attached to the left and right sides of the rear gate 6b so that it can be horizontally raised and lowered and stored in an upright position through the opening and closing doors 7 and 7'. A rear gate storage and holding structure is provided with a locking arm 9 that can be engaged and detached from the rear gate.