JP2001132323A - Side wall opening/closing device for mounting vehicle platform - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a side wall opening/closing device for mounting a vehicle platform having an openable/closable side wall body which is simple in operation, and can open the side wall surface by one single switching operation, and suppress the cost of its structure. SOLUTION: An opening/closing mechanism 25 of the side wall body 24 comprises two gas springs 25a and 25b, or one hydraulic cylinder and one gas spring 25b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cargo box for mounting a vehicle carrier mounted on a vehicle carrier such as a truck or a railroad freight vehicle, and more particularly, to a side wall opening / closing hood or panel having a freely openable / closable side wall. It concerns the device.

[0002]

2. Description of the Related Art Conventionally, as this kind of apparatus, a link mechanism, a latch mechanism, various kinds of springs or hydraulic cylinders or the like are used to open and close a side wall surface in general.

[0003]

However, the above-described conventional side wall opening / closing apparatus for mounting on a vehicle bed is disclosed in Japanese Patent Publication No. H8-8-5.
As disclosed in Japanese Unexamined Patent Publication No. 321, there is provided a support at the center of the upper surface of a loading platform, a beam provided between the supports, and a pair of left and right wing panels which are used as a support member and which turn up and down. It is pivoted so that the left and right sides of the carrier can be opened and closed. For this reason, there is a problem that a strong force (a heavy opening operation) is required for the opening operation of the side wall surface, the weight is large, the configuration is complicated, and the cost is high.

[0004] The object of the present invention is to use a weak force (light operation),
Another object of the present invention is to provide a side wall opening / closing device for mounting on a vehicle carrier, which can open the side wall surface by one switch operation, and which can be obtained with a simple and low-cost structure.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a side wall opening / closing apparatus for mounting a vehicle bed in which at least one of the right and left side walls can be opened and closed about a straight line along the upper end thereof as a rotation axis. In the state, both the expansion and contraction operation portions of the gas springs hold a stationary state, and at least one of the expansion and contraction operation portions of the gas spring exerts an external force on the side wall body that exceeds the dead point to apply the rotation axis to the rotating shaft. After the initial rotation as a fulcrum by a predetermined angle, the rotation of each of the expansion and contraction operation portions of the gas springs and the fixed portion and the extension of the expansion and contraction operation portions cooperate with each other without or with little external force. A side wall body opening / closing machine comprising the two gas springs, wherein both the expansion and contraction operation portions extend in the extension limit direction and open and rotate the side wall body to open and close the open / close side surface. It is achieved by providing each of the widthwise both ends of the side wall face piece.

In the closed state of the side wall surface body, both the expansion and contraction operation portions of the gas spring and the hydraulic cylinder are both kept stationary, and when the hydraulic cylinder starts operating and the expansion and contraction operation portion extends, the gas is released. The extension / retraction operating portion of the spring also extends, and thereafter, both extension / retraction operation is performed by the cooperation of the rotation of each of the support portions of the fixed portions of the gas spring and the hydraulic cylinder and the extension of the both extension / retraction portions. The side wall body opening / closing mechanism, comprising the gas spring and the hydraulic cylinder, which opens and rotates the side wall body to open and close the opening / closing side surface by extending in the extension direction of the side wall, moves the side wall body body in the width direction both ends. Are achieved by automatically opening and closing the side wall surface.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic side view showing an embodiment of a side wall opening / closing device for mounting a vehicle carrier according to the present invention mounted on a truck, and FIG. 2 is a schematic plan view of the same. 1 and 2, reference numeral 100 denotes a side wall opening / closing device according to the present invention, and 200 denotes a lorry equipped with the side wall surface opening / closing device 100.

The side wall opening and closing device 100 includes four columns 11 to 1 erected at positions corresponding to the respective corners of the square.
4 and four ceiling frames 15 to 18 laid between the columns 11 to 14, front and rear surfaces 19 and 20, left and right side surfaces 21 and 2.
2 and a ceiling surface 23 are formed.

The side wall opening and closing device 100 includes at least one of the left and right side surfaces 21 and 22 on one side 21 or 22 thereof.
Here, the struts 11, 12, 13, 1
The side surface 2 is rotatable about a straight line along the front and rear lateral side ceiling frames 17 and 18 laid between the four sides as a rotation axis (virtual axis).
1 and 22 are provided.

The side wall surface member 24 is made of a lightweight panel or a hood provided with a reinforcing frame at an appropriate portion. Here, the side wall surface body 24 that can be folded in two in the middle part in the up-down direction is illustrated, but is not limited thereto. It may be a flat plate (not bendable) or a three-foldable one that can be bent at two locations in the middle in the vertical direction.

As described above, the side wall surface opening / closing device 100 is capable of opening and closing at least one of the right and left side wall members 24, in this case, both the left and right side wall members 24, 24, using a straight line along the upper end thereof as a rotation axis (virtual axis). is there. Each side wall surface body 24
Both ends in the width direction of the side wall surface body 24 (the columns 11, 12 side;
Each of the side wall opening / closing mechanisms 25 is provided with first and second two gas springs 25a, 2b.
5b.

The side wall opening and closing mechanism 25 will be described in detail with reference to FIGS. 3 and 4. FIG. 3 shows the configuration of the side wall body opening / closing mechanism 25, in this case, of the side wall body opening / closing mechanism 25 that opens and closes the side wall body 24 of the side wall surface opening / closing device 100, the side wall body opening / closing mechanism on the left side in the width direction of the side wall body 24 (the support 11 side). FIG. 4 is an enlarged perspective view showing a main part of the side wall surface opening / closing mechanism 25 in FIG.

In the side wall face opening / closing mechanism 25, when the side wall face body 24 is in the closed state, both the expansion and contraction operating portions 25a1 and 25b1 of the gas springs 25a and 25b hold the stationary state (see position a in FIG. 3). When an external force of at least one of the gas spring expansion / contraction operating portions 25a1 or 25b1 exceeds the dead point is applied to the side wall surface member 24 and the initial rotation of the rotation axis (virtual axis) is performed by a predetermined angle, then the following operation is performed. It is configured to operate.

That is, when the initial rotation is performed, the expansion and contraction operation portions 25a1 and 25b of the gas springs 25a and 25b are moved.
1 and the extension and contraction of the telescopic operating portions 25a1 and 25b1 by the rotation of the respective pivotal support portions of the fixed portions 25a2 and 25b2, and the two telescopic operating portions 25a without an external force or with a slight external force.
1, 25b1 extend to the extension limit, open and rotate the side wall body 24 (see arrows A to C), and open and close the open / close side surface (left side surface 21) (in FIG. 3, position b, position c). And position C in FIG. 4).

Specifically, the first gas spring 25a
The rear end of the fixed portion 25a2 is pivotally supported by the left and right lateral ceiling frames 15. Then, the second gas spring 25b
The rear end of the fixed portion 25b2 is pivotally supported by the column 11, the distal end of the telescopic operation portion 25b1 is pivotally supported at the upper part in the width direction end of the side wall surface member 24, and the intermediate portion of the telescopic operation portion 25b1 First gas spring expansion and contraction operation section 25a1
Is pivotally supported.

Next, the operation will be described. First, in a resting state in which the side wall surface member 24 is closed (see position a in FIG. 3), the gas springs 25a and 25b
4 is balanced at a position where it is not biased clockwise in FIG. 3, so that this rest state is maintained. At this time, since the side wall body 24 is hooked by a hook (not shown), the gas springs 25a and 25b do not operate even if the clockwise external force is erroneously applied to the side wall body 24.

From the above-mentioned resting state, when the hook is removed and the lower part of the side wall member 24 is slightly pulled forward (to the left in FIG. 3), the telescopic operating parts 25a1 and 25b1 of the gas springs 25a and 25b are extended therefrom. Start to put out, gas spring 2
5a is applied in the direction of arrow A in FIG. 4, and the gas spring 25b is applied with a biasing force in the direction of arrow B in FIG. 4 to open the side wall 24 in the direction of arrow C (clockwise) in FIG. start.

When the side wall 24 is fully opened by the urging forces of the gas springs 25a, 25b, the extension of the gas spring expansion / contraction operating portions 25a1, 25b1 reaches a limit, and stops operating there, and the side wall 24 is stopped in the fully open state. (Refer to position C in FIGS. 3 and 4).

When closing the side wall surface member 24, the string (not shown) connected to the side wall surface member 24 is pulled downward to drive the gas springs 25a and 25b in a direction opposite to that in which the gas springs 25a and 25b are opened. It is only necessary to return to the resting state and lock with the above-mentioned latch (not shown). A ratchet may be provided in place of the hook, and the side wall surface member 24 may be kept in a rest state. In this case, once ratchet
By performing the rotation operation, the rest state of the side wall surface member 24 is released.

FIGS. 5 and 6 are views showing a main part of another embodiment of the side wall surface opening / closing mechanism 25 from the rear side. FIG. 5 shows a rest state, and FIG. 6 shows an open state. In both figures, 5
5a is a hydraulic cylinder, 55a1 is a telescopic operating portion of the hydraulic cylinder 55a, and 55a2 is the fixed portion. In addition, in FIGS. 5 and 6, the same reference numerals as those in FIGS. 3 and 4 indicate the same or corresponding parts.

Here, an example is shown in which the gas spring 25a in the above embodiment is replaced with a hydraulic cylinder 55a. More specifically, the rear end of the fixed portion 55a2 of the hydraulic cylinder 55a is pivotally supported by the left and right lateral ceiling frames 15, and the distal end of the telescopic operation portion 55a1 is pivotally supported by the side wall surface member 24. . The gas spring 25b is connected to the support 1
1, the rear end of the fixed portion 25b2 is pivotally supported, and the distal end of the expansion / contraction operation portion 25b1 is pivotally supported above the widthwise end of the side wall surface member 24. That is, in the closed state (resting state) of the side wall surface body 24 shown in FIG. 5, both the expansion and contraction operation parts 25b of the gas spring 25b and the hydraulic cylinder 55a are used.
1 and 55a1 both hold a stationary state (in FIG. 5,
See position a).

Next, when the hydraulic cylinder 55a starts operating and its telescopic operating part 55a1 extends, the gas spring telescopic operating part 25b1 also extends. After that, the rotation of each of the telescopic operating portions 55a1 and 25b1, the gas spring 25b, and the fixing portions 25b2 and 55a2 of the hydraulic cylinder 55a, and the extension of the telescopic operating portions 25b1 and 55a1 cooperate with each other. The telescopic operating portions 25b1 and 55a1 extend to their extension limits, open and rotate the side wall body 24, and open and close the open / close side surface (see position C in FIG. 6). The operation of the hydraulic cylinder 55a can be automatically activated by a drive unit (not shown) provided at the front of the driver's seat or the cargo bed.

[0023]

As described above, according to the present invention, the side wall opening / closing mechanism 25 is provided with two gas springs 25a,
5b or one hydraulic cylinder 55a and one gas spring 25b, so with a weak force (light operation),
Alternatively, there is an effect that the side wall surface can be opened by one switch operation, and the side wall surface opening / closing device for mounting the vehicle carrier can be provided with a simple and low-cost structure.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an embodiment of a side wall surface opening and closing device according to the present invention.

FIG. 2 is a schematic plan view of the same.

FIG. 3 is an explanatory diagram of a configuration of a side wall surface opening / closing mechanism in FIGS. 1 and 2;

4 is an enlarged perspective view showing a main part of a side wall surface opening / closing mechanism in FIG. 3;

FIG. 5 is a diagram showing a main part configuration of another embodiment of the side wall surface opening / closing mechanism from the rear side.

FIG. 6 is a diagram showing a main part configuration of another embodiment from the rear side.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Side wall opening / closing device 11 to 14 Post 15 to 18 Ceiling frame 19, 20 Front and rear surface 21, 22 Left and right side surface 23 Ceiling surface 24 Side wall surface body 25 Side wall surface opening and closing mechanism 25 a, 25 b First and second gas springs 25 a 1, 25 b 1 Gas Spring telescopic operation part 25a2, 25b2 Gas spring fixing part 55a Hydraulic cylinder 55a1 Hydraulic cylinder telescopic operation part 55a2 Hydraulic cylinder fixing part 200 Truck

Claims (2)

[Claims] 1. A side wall opening / closing device for mounting on a vehicle carrier, wherein at least one of the right and left side walls is openable and closable about a straight line along an upper end thereof as a rotation axis. The telescopic operating portions of both maintain a stationary state, and when an external force of at least any of the telescopic operating portions of the gas springs exceeds the dead point is applied to the side wall surface body and initially rotates by a predetermined angle around the rotation axis, After that, the extension of both telescopic operating parts with no or little external force by the cooperative action of the rotation of each support of the telescopic operating part and fixed part of both gas springs and the extension of both telescopic operating parts. The side wall body opening / closing mechanism comprising the two gas springs that extends in the direction to open and rotate the side wall body to open and close the open / close side surface is provided at both ends in the width direction of the side wall body. A side wall opening / closing device for mounting on a vehicle carrier, each of which is provided in a vehicle. 2. A side wall opening / closing apparatus for mounting a vehicle carrier, wherein at least one of the right and left side wall bodies can be opened and closed about a straight line along an upper end thereof as a rotation axis. When both the expansion and contraction operation parts of the hydraulic cylinder hold a stationary state, and when the hydraulic cylinder starts operating and the expansion and contraction operation part extends, the expansion and contraction operation part of the gas spring also extends. In addition, by the cooperative action of the rotation of each shaft support of both fixed parts of the hydraulic cylinder and the extension of both telescopic operating parts, both telescopic operating parts extend in the extension limit direction and open and rotate the side wall surface body. A side wall opening / closing mechanism comprising the gas spring and the hydraulic cylinder for opening and closing the opening / closing side surface is provided at each end of the side wall surface in the width direction, so that the side wall surface can be automatically opened / closed. A side wall opening and closing device for mounting on a vehicle carrier.