JP2668341B2 - Rear door fixing device for lorries - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear door fixing device for holding a rear door of a truck in an open position.

[0002]

2. Description of the Related Art Conventionally, as a method of fixing and holding a rear door of a freight car to a position opened to about 270 degrees, a base end portion of an arm is pivotally attached to an outer surface of the rear door and a side wall portion of a cargo container container is attached. Inserting the tip hook portion of the arm into the provided seat is performed.

However, in such a method, there is a risk that the distal end hook portion of the arm may unintentionally come off the seat due to vibration or the like, and there is a problem that the stability of the fixed holding is lacking.

[0004]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a rear door fixing device which can fix and hold a rear door of a lorry in a predetermined open position accurately.

[0005]

The rear door fixing device of the present invention is fixed to the outer surface of the rear door 1 and has a bearing ridge 3 in the center in a laterally elongated manner. And a base plate 2 provided with a vertical hole 4 in the center of the projection 3 for a bearing; and shaft plates 6, 6 inserted from the vertical hole 4 into the projection 3 for a bearing. An arm 5 protruding on both sides and having hooking claws 7, 7 projecting on the left and right sides of the tip;
Fixed to the valley portion 8a of the corrugated side wall 8 of the loading container,
An arm insertion protruding portion 10 is provided in a central portion in a vertically long state, and the hook 5 of the arm 5 is provided on the arm insertion protruding portion 10.
And a receiving seat 9 having a vertically long hole 12 through which a leading end main portion 5b of the arm 5 is inserted below the center of the horizontally long hole 11; and a rear side of the vertically long hole 12; A lower end portion 13a is fixed to the lower portion of the arm insertion protrusion 10 of the seat 9 and includes an arm pressing leaf spring 13 inclined toward the front side toward the upper end portion 13b.

[0006]

The rear door 1 is rotated by about 270 degrees about a vertical pivot to open it to a position substantially parallel to the corrugated side wall 8 of the loading container, and the bearing ridge 3 of the base plate 2 is opened.
The arm 5 is lifted and rotated about the shaft plate portions 6 and 6 fitted on the arm. While pushing the upper end portion 3b of the arm pressing leaf spring 13 with the hooking claw portions 7 and 7 at the tip end portion of the arm 5, the seat 2
Into the elongated hole 11 of the protrusion 10 for inserting an arm.

Then, the arm 5 is pushed downward slightly and rotated to drop the main body 5b of the distal end of the arm 5 into the vertically long hole 12 of the ridge 10 for inserting the arm.
Is engaged with the back surface of the arm insertion protrusion 10. As a result, the arm 5 is stably engaged with the receiving seat 9, the rear door 1 is fixedly held at a predetermined open position, and the rear door does not interfere with the loading and unloading work of cargo to and from the cargo container container.

After the work is completed, the arm 5 is slightly lifted and rotated against the bias of the leaf spring 13 so that the main body 5b of the arm 5 is moved from the vertically elongated hole 12 of the receiving seat 9 to the horizontally elongated hole 1
Then, the hooks 7, 7 are pulled out from the horizontally elongated hole 11. As a result, the restraint of the rear door 1 on the cargo container is released, and the rear door 1 is closed and rotated.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A base plate 2 is fixed to a rear door 1 by fixing members 15, 15 such as screws and rivets which pass through fixing holes 14, 14 at upper and lower ends. The seat 9 is provided with fixing holes 16 at both left and right ends,
Fastened to the side wall 8 of the cargo container by fasteners 17, 17 such as screws and rivets passing through 16. Leaf spring 13
Are fixed to the seat 9 by rivets 18. The seat 9 is provided with a positioning plate portion 9a that comes into contact with the corrugated surface or the abdominal surface of the corrugated side wall portion 8.

[0010]

According to the present invention, the shaft plates 6, 6 of the arm 5 are supported by the bearing protrusions 3 of the base plate 2 fixed to the rear door 1, and are fixed to the corrugated side walls 8 of the loading container. An elongated hole 11 through which the hooking claws 7, 7 of the arm 5 pass is provided in the arm insertion protrusion 10 of the seat 9, and a vertically elongated hole 1 into which the leading end main portion 5 a of the arm 5 enters below the center of the elongated hole 11.
2 are arranged in series and arranged on the back side of the vertically long hole 12 to fix the lower end portion 13a of the arm pressing leaf spring 13 to the lower portion of the seat, and the leaf spring 13 is inclined toward the front side toward the upper end portion 13b. The arm 5 inserted into the arm insertion ridge 10 of the seat 9 is accurately held at the insertion position by the pressing pawls 7, 7 being pressed by the arm pressing leaf spring 13. Therefore, the rear door 1 does not fall off unintentionally due to vibration or the like, and the stability of the fixed holding of the rear door 1 is excellent.

[Brief description of the drawings]

FIG. 1 is a front view of an arm and a base plate constituting a rear door fixing device of a lorry according to one embodiment of the present invention.

FIG. 2 is a right side view of the arm and the base plate.

FIG. 3 is a front view of a seat constituting the rear door fixing device.

FIG. 4 is a left side view of the seat.

FIG. 5 is a plan view of the use state of the rear door fixing device.

FIG. 6 is a sectional view taken along line AA of FIG. 5;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rear door 2 base plate 3 raised portion for bearing of base plate 4 vertical hole of raised portion for bearing 5 arm 5 a base end portion of arm 6 shaft plate portion of arm 7 arm claw portion 8 corrugated side wall of carrier container 8a Valley portion of corrugated side wall 9 Receiving seat 10 Protruding portion for arm insertion of receiving seat 11 Horizontally long hole of protruding portion for arm insertion 12 Vertically long hole of protruding portion for arm insertion 13 Arm pressing leaf spring 14 Fixing hole of base plate 15 Fixing device for base plate 16 Fixing hole for seat 17 Fixing device for seat 18 Rivet for fixing plate spring for holding down arm

Claims (1)

(57) [Claims] 1. A base plate 2 fixed to the outer surface of a rear door 1 and provided with a bearing ridge 3 in a central portion in a horizontally long state and a vertical hole 4 in a central portion of the bearing ridge 3; An arm 5 having shaft plate portions 6, 6 inserted into the protrusion 3 for bearing from the right and left sides of the base end and projecting with hooking claws 7, 7 on the left and right sides of the tip end; The valley 8a of the corrugated side wall 8 of the loading container
The arm insertion ridge 10 is provided vertically in the center, and the arm insertion ridge 10 is provided with a horizontally long hole 11 through which the hooking claws 7, 7 of the arm 5 pass.
1. A receiving seat 9 in which a vertically elongated hole 12 into which the front end main body portion 5a of the arm 5 is inserted is provided on the lower side of the central portion of 1; A rear door fixing device for a lorry vehicle, comprising a leaf spring 13 for holding an arm fixed to a lower end portion 13a and inclined toward the front side toward the upper end portion 13b.