KR20090044372A

KR20090044372A - Power rachet apparatus of tail gate

Info

Publication number: KR20090044372A
Application number: KR1020070110451A
Authority: KR
Inventors: 박도헌
Original assignee: 현대자동차주식회사
Priority date: 2007-10-31
Filing date: 2007-10-31
Publication date: 2009-05-07

Abstract

The present invention relates to a tail gate power latch device, and more particularly, to simplify the configuration of the power latch device configured to open and close the tail gate by power by a motor, and to reduce the friction during the operation of the power latch. A tail gate power latch device is provided.

An object of the present invention is to provide a tail gate power latch device that can simplify the configuration of the power latch device to facilitate the manufacture and to minimize the wear even after a long time operation to prevent malfunction.

In order to realize the above object, the present invention provides a tail gate power latch device including a housing (50) on which a latch unit (L) and a clover lever (55) for operating the same are mounted. Ratchet not only fixed to the motor but also to which the worm gear 1 is mounted on the shaft, and to the worm gear 1 of the motor 2 described above, the ratchet being rotatably installed in the housing 50. And a coupling means formed between the gear 3 and the ratchet gear 3 and the clover 55 so as to reciprocate the clover 55 by the rotation of the ratchet gear 3. do.

Tailgate, Tailgate Power Latch Structure

Description

Tail gate power latch device {Power rachet apparatus of tail gate}

In general, the one-box vehicle equipped with the tail gate is configured to open and close the tail gate while the driver is seated in the driver's seat, and thus, a so-called power latch device is mounted to smoothly open and close the tail gate. .

The tailgate power latch device is configured to open and close the latch while the motor is operated when the driver operates a separate switch in the driver's seat, and as shown in FIG. 4, the housing in which the latch unit L is mounted ( 50, a motor 51 fixed to the housing 50 and acting as a switch (not shown), a drive gear 52 installed to rotate by the motor 51, and the drive gear described above. The worm gear 53 is coupled to the 52 and installed so as to rotate together with the drive gear 52, the slider 54 meshes with the worm gear 53 to the front and back when the worm gear 53 rotates; In addition, the slide unit 54 is installed to operate by the movement of the slider 54, and consists of a clover lever 55 for operating the latch unit L.

That is, when the driver operates the switch (not shown), the motor 51 drives and the drive gear 52 connected to the gear rotates, and the worm gear 53 is driven by the drive gear 52. Rotates to advance the slider 54.

When the slider 54 is advanced, the clover lever 55 is pushed to operate the latch unit L so that the latch unit L is automatically opened and closed.

However, as described above, when the worm gear is driven by driving the motor and the claw lever is operated while linearly reciprocating the slider coupled thereto, the friction force is largely generated in the reciprocating motion of the slider. And the friction force is increased by the wear of the worm gear is a failure that does not operate to the original position occurs.

In other words, if the slider is reciprocated linearly and the service period is extended, the operating direction of the slider and the worm gear is at right angles, so that the contact area is badly worn and the friction force is increased, thereby preventing the home position operation by the driving force of the motor. There is a problem.

Accordingly, an object of the present invention is to solve the above problems, and the tail gate power latch device that can simplify the configuration of the power latch device to facilitate the manufacturing and to minimize the wear even after a long time operation to prevent malfunction In providing.

In order to achieve the above object, the present invention is a tail gate power latch device comprising a housing equipped with a latch unit and a claw lever for operating the same, wherein the worm gear is fixed to the housing as well as A ratchet gear meshed with the worm gear of the motor, the ratchet gear being rotatably installed in the housing, and formed between the ratchet gear and the clover lever to reciprocate the clover lever by the rotation of the ratchet gear. It characterized in that it comprises a coupling means.

As described above, according to the present invention, the ratchet gear rotated by the driving of the motor is combined with the claw lever by the first and second protrusions so as to directly reciprocate the claw lever, thereby simplifying the configuration of the power latch and reducing the wear portion. The benefits include reduced lifespan and improved operational reliability.

1 and 2 are a perspective view showing a tail gate power latch device according to the present invention and a ratchet gear, which is not only fixed to the housing 50 to which the latch unit L is mounted, but also a worm gear on the shaft. (1), a ratchet gear (3) fitted to the worm gear (1) of the motor (2), the rotatable gear (3) rotatably mounted to the housing (50), and the ratchet gear ( It consists of a coupling means formed between the ratchet gear (3) and the clover (55) to reciprocate the clover (55) by the rotation of 3).

That is, when the motor 2 is operated, the ratchet gear 3 engaged with the worm gear 1 rotates to directly reciprocate the clover lever 55, thereby simplifying the configuration and removing the friction part. By eliminating it, you can improve its life and prevent malfunction.

As shown in FIGS. 1 and 2, the coupling means protrudes on one side of the ratchet gear 3 and is formed to fit into the coupling hole 4 formed in the clover lever 55. And two second protrusions 6 protruding from the ratchet gear 3 so as to limit both sides of the claw lever 55 when the first protrusion 5 and the claw lever 55 are engaged. The first and second protrusions 5 and 6 penetrate the housing 50 to be coupled with the clover lever 55 and are formed so as not to interfere with the housing 50 when the ratchet gear 3 rotates. Consists of

That is, when the ratchet gear 3 rotates while the first and second protrusions 5 and 6 are combined with the clover lever 55, the clover lever 55 linearly moves as much as the rotation angle, thereby simplifying power. The latch can be operated.

Referring to the operation and effect of the present invention as described above, when the driver turns on a switch (not shown) to open the tail gate, the motor 2 operates in one direction while a current is applied to the motor 2.

When the motor 2 operates in one direction, the worm gear 1 rotates, and the ratchet gear 3 engaged with the worm gear 1 rotates in one direction, for example, in a clockwise direction in FIG. When rotated, the clover lever 55 coupled to the first and second protrusions 5 and 6 moves to the right in the drawing.

When the clover lever 55 is moved to the right side, the latch unit L is opened while operating. When the clover lever 55 is directly operated by the rotation of the gear 3, friction and wear are not generated. Operation is possible.

Of course, in order to close it again after opening the latch unit (L), the switch is turned off or reversely operated. As a result of the switch operation, the motor 2 is rotated in the reverse direction. While rotating clockwise, the clover 55 is moved to the left.

At this time, since the claw lever 55 and the ratchet gear 3 are coupled by the first and second protrusions 5 and 6, the coupling force and the operating force are large, and the loads are distributed, so that the ratchet gear 3 and the clover lever ( By reducing the wear and tear of 55) it is possible to further improve the life.

1 is a perspective view showing a tail gate power latch device according to the present invention;

Figure 2 is a perspective view of the ratchet gear in Figure 1,

3 is a front view showing the back of the power latch device in FIG.

4 is a schematic front view showing a power latch mounted to a general tail gate.

* Explanation of symbols for the main parts of the drawings

1: worm gear 2: motor

3: ratchet gear 4: coupling hole

5: first projection 6: second projection

7: through-hole 50: housing

L: Latch Unit

Claims

A tail gate power latch device comprising a latch unit and a housing to which a clover for operating the latch unit is mounted.

A motor not only fixed to the housing but also equipped with a worm gear on the shaft, a ratchet gear meshed with the worm gear of the motor and rotatably installed in the housing, and the ratchet gear is rotated by the claw. And a coupling means formed between the ratchet gear and the clover to reciprocate the lever.

The method of claim 1,

The coupling means includes a first projection formed on one side of the ratchet gear and formed to fit into a coupling hole formed in the clover, and a ratchet gear to limit both sides of the clover when the first protrusion and the clover are engaged. Tail gate power latch, characterized in that it comprises two second projections protruding in the through hole formed in the first and second projections penetrate the housing and coupled to the clover and do not interfere with the housing when the ratchet gear is rotated. Device.