KR19980047518A - Tailgate Air Control - Google Patents

Abstract

The present invention allows the tailgate control of the truck to be pneumatic to simplify the installation structure and reduce the cost due to the reduction of parts, and to prevent the occurrence of an accident that the hook is not released, the vehicle is overturned backwards The present invention relates to an air control device of a tailgate to prevent the present invention. The present invention provides a limit switch 20 installed at the front lower side of the deck 10 to detect the rising and falling of the deck 10, and the The magnetic valve 30 is activated by the detection of the limit switch 20, the air tank 40 for supplying air pressure to the magnetic valve 30, and the magnetic valve 30 is operated by the ON / OFF The hook 60 is locked and released by the movement of the air chamber 50 and the rod 52 operated by the spring 51 installed inside the air chamber 50.

Description

Tailgate Air Control

The present invention relates to a tailgate control device of a truck, and in particular, to enable the control of the tailgate to be pneumatic to simplify the installation structure and the cost can be reduced due to the reduction of parts, the accident of the hook is not released It relates to a tailgate air control device that prevents the occurrence and prevents the vehicle from overturning backwards.

In general, truck vehicles that are currently in production and in use are designed to allow the front part of the loading box to be inclined ascending and open the rear tailgate of the loading box so that the load loaded in the loading box can be poured into a designated place. As shown in Figs. 1 to 3, the structure of the link assembly (2) and the link assembly (2) having a roller (1) and installed in the lower front of the deck (not shown) capable of loading luggage, A spring cylinder 3 installed at the rear, a rod 4 moved back and forth by the spring cylinder 3, a rod guide 5 for guiding forward and backward movement of the rod 4, and the rod 4 A hook assembly (7) having a hook (6) connected to an end of the deck and installed at the rear lower side of the deck and for locking and disengaging by operation of the spring cylinder (3), and the hook (6). Constitutes a hook guide (8) and the return spring 9 to have the elastic force.

Referring to the operation of the conventional tailgate control device configured as described above is as follows.

Since the link assembly 2 is installed on the lower surface of the deck, when the deck is raised, the roller 1 installed on the link assembly 2 becomes free, pushing the rear of the spring cylinder 3 and thus the spring cylinder 3 ), The rod (4) can be pushed to release the hook (6) to pour the load into the ground, and when the deck is finished and the work is finished, the roller (1) descends while rolling the slope of the arm assembly (not shown). The spring cylinder (3) is to pull the rod (4) so that the hook (6) is locked by pulling the hook (6).

At this time, the hook guide 8 and the return spring 9 serves to give elasticity so that the hook 6 can be opened when the hook 6 is opened.

However, the conventional tailgate control device is complicated in structure and expensive because it requires installation by connecting a plurality of parts, and the hook is not opened when the deck is raised so that the center of gravity is moved backward by the load so that the vehicle is moved. There was a problem of an overturning accident.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, the installation structure of the tailgate control device is simple, to prevent the occurrence of the rollover of the vehicle due to the malfunction of the hook to increase the reliability of the product Its purpose is to.

In order to achieve the above object, the present invention provides a limit switch installed at the front lower side of the deck and capable of detecting the rising and falling of the deck, a magnetic valve operated by the detection of the limit switch, and supplying air pressure to the magnetic valve. And an air chamber which is operated by ON / OFF of the magnetic valve, and a hook which locks and releases by movement of a rod operated by a spring of the air chamber.

1 is an exploded perspective view showing a conventional tailgate control device.

Figure 2 is a state of use showing a conventional tailgate control device.

Figure 3 is a block diagram showing a tailgate control device of the present invention.

Explanation of symbols on the main parts of the drawings

One ; Roller 2; Link assembly

3; Spring cylinders 4, 52; road

5; Rod guides 6, 60; hook

7; Hook assembly 8; Hook guide

9; Return spring 10; Deck

20; Limit switch 30; Magnetic valve

40; Air tank 50; Air chamber

51; spring

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 3, the limit switch 20 is installed at the front lower side of the deck 10 to detect the rising and falling of the deck 10, and the magnetic actuated by the detection of the limit switch 20. Valve 30, the air tank 40 for supplying air pressure to the magnetic valve 30, the air chamber 50 which is operated by the ON / OFF of the magnetic valve 30, and the air chamber 50 It consists of a hook (60) for locking and release by the movement of the rod (52) operated by the spring (51) installed inside the.

Looking at the operation of the present invention configured as described above are as follows.

When the deck 10 is raised, the limit switch 20 detects the rise of the deck 10 to turn on the magnetic valve 30, and the magnetic valve 30 receives air from the air tank 40 to receive air. Since the air pressure is sent to the rear of the chamber 50 to push the rod 52 forward while compressing the spring 51 installed in the air chamber 50, the hook 60 rotates upward due to the movement of the rod 52. When the deck 10 descends, the limit switch 20 detects the fall of the deck 10 to turn off the magnetic valve 30 so that the pneumatic pressure supplied to the air chamber 50 can be released. Since the spring 51 is blocked and blocked, the rod 52 is rotated downward to lock the rod 52 as it is reversed.

As described above, the present invention improves the control device of the tailgate so that the installation structure of the tailgate control device can be easily and precisely operated to prevent the occurrence of a rollover of the vehicle due to the malfunction of the hook. The effect of increasing the reliability of can be obtained.

Claims (1)

A limit switch installed at the front lower side of the deck to detect the rising and falling of the deck, a magnetic valve operated by the detection of the limit switch, and a rod operated by supplying air pressure by ON / OFF of the magnetic valve. Tail control air chamber comprising a hook for locking and unlocking while rotating up and down by the movement of the rod actuated by a spring installed inside the air chamber.