KR100692724B1 - Door lock structure of car - Google Patents

Abstract

A door lock structure of a vehicle is provided to prevent a theft by restricting a door lock rod connected with a door latch from moving vertically even in vertically or horizontally rotating a key cylinder with a stolen tool. A door lock structure of a vehicle is composed of a first key cylinder(2) having a key groove receiving a key; a second key cylinder(5) connected to the first key cylinder by a pin(4) to rotate relatively to first key cylinder in a vertical direction; a first key lever(5b) fixed to the second key cylinder; and a second key lever connected to the first key lever by the pin to rotate relatively to the first key lever in a horizontal direction and fixed to one end of a door lock rod(6) connected with a door latch.

Description

Door lock structure in automobile

1 is a perspective view of a door lock structure according to the present invention;

2 is a front view of FIG. 1,

3 is a rear view of FIG. 1;

4 is an exploded perspective view of the door lock structure according to the present invention;

5 is an operating state when the external force acts upward in the door lock structure according to the present invention;

6 is an operating state when the external force acts downward in the door lock structure according to the present invention,

7 is an operating state when the external force acts in the right direction to the door lock structure according to the present invention,

8 is an operating state when the external force acts in the left direction to the door lock structure according to the present invention,

9 is an operational state diagram when the external force acts in the vertical direction and the left and right directions in combination with the door lock structure according to the present invention.

<Description of Symbols for Main Parts of Drawings>

1-key cylinder housing 2-first key cylinder

3-bracket 4-pin

5-Second Key Cylinder 6-Door Lock Rod

7-clip

The present invention relates to a door lock structure of a motor vehicle, and more particularly, to a door lock structure of a vehicle in which a door lock is not unintentionally released when a stolen tool is inserted into a key cylinder to forcibly rotate the key cylinder in a vertical direction and a horizontal direction.

Conventionally, a door of a vehicle is provided with a door lock device for maintaining a closed state of the door while being rotatably mounted to the vehicle body via a hinge to open and close the interior of the vehicle, the door lock device is a key that can be rotated by inserting a key And a cylinder and a door lock rod for releasing or locking the door latch while moving up and down by the rotational force of the key cylinder, wherein the key cylinder with the key cylinder includes a fastening means such as a bolt on the housing of the outer handle of the door. It is fixedly installed by mediation.

Accordingly, when the driver inserts the key into the key cylinder and rotates the key cylinder, the key cylinder rotates with the key and the door lock rod moves upward and downward to release or lock the door latch.

However, if a stolen tool, such as a driver, is inserted into the above-described cylinder for the purpose of theft of the vehicle, and the external force is applied, the tightening force of the fastening bolt which is fastened by fixing the key cylinder bundle to the housing of the outer door handle is loosened. Since the whole can be rotated up and down or left and right, there is a problem that the door lock rod connected to the key cylinder is moved up and down undesirably, the door latch is released to open the door.

In order to prevent theft as described above, it is proposed to prevent the door lock rod from being operated undesirably by moving the key cylinder and the door lock rod with the ball joint in the up and down direction of the key cylinder bundle. The drawback was that it could not prevent unwanted operation of the door lock rod while rotating in the direction.

Accordingly, the present invention has been made in view of the above circumstances, and inserts a normal key into the key cylinder so that the door can be released or locked only when the key cylinder is rotated, whereas the stolen tool is inserted into the key cylinder. It is an object of the present invention to provide a door lock structure of a vehicle that prevents theft of a vehicle by preventing the door lock rod connected to the door latch from moving up and down even when the key cylinder bundle is rotated up or down or left and right.

The present invention for achieving the above object, the first key cylinder is formed with a key groove to accommodate the key, and the second key cylinder connected to the first key cylinder rotatably up and down via a pin, A first key lever fixedly mounted to the two key cylinders, and a second key lever fixedly attached to one end of the door lock rod connected to the door latch while being connected to the pin by rotatably from side to side with respect to the first key lever; Doing.

Preferably, the first key cylinder is rotatably received in the housing, the housing is characterized in that the bracket is formed to be fixed to the housing of the outer door handle.

In addition, a semi-circular fastening portion is integrally formed at the rear end of the first key cylinder, and a semicircular fastening portion corresponding to the fastening portion is formed at the front end of the second key cylinder, and each of the fastening portions is formed by the pin. The first key lever is formed integrally with the outer circumferential surface of the second key cylinder and is formed on the outer circumferential surface of the second key cylinder. The second key lever has a circular shape and is fixedly mounted to the door lock rod through a clip, and a rectangular protrusion is integrally formed on one outer circumferential surface of the second key lever to correspond to the rectangular protrusion of the first key lever. A protrusion having a rectangular shape is inserted into the fitting groove of the first key lever and coupled to the protrusion so as to be relatively rotatable through a pin. Characterized in that formed integrally.

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

1 to 3 is a perspective view of the door lock structure according to the present invention, Figure 4 is an exploded perspective view of the door lock structure according to the present invention, that is, in the cylindrical cylinder (1) having a generally cylindrical shape A first key cylinder (2) having a key groove is inserted and rotatably supported, and a bracket (3) for fastening and fixing the key cylinder bundle to the housing of the outer door handle on a predetermined outer circumferential surface of the key cylinder housing (1) It is integrally extended and formed.

The bracket 3 has a fastening hole 3a formed therein for fastening to the housing of the outer door handle by means of fastening means such as bolts, and the rear end portion of the first key cylinder 2 is a semicircular fastening. The part 2a is comprised.

The distal end portion of the second key cylinder 5, which is rotatably fastened via the fastening portion 2a and the pin 4 of the first key cylinder 2, is corresponding to the fastening portion of the first key cylinder. And the pins 4 are fitted to be assembled in a state where the fastening portions 2a and 5a are in close contact with each other.

The outer circumferential surface of the second key cylinder 5 is integrally formed with a circular first key lever 5b, and the outer circumferential surface of the first key lever 5b is a recessed groove 5c. A rectangular protrusion 5d having a recess is formed.

One end of the door lock rod 6, which is connected to the door latch to lock or release the door latch, is bent and a second key lever 6a having a circular shape on the outer circumferential surface thereof is fixedly installed through the clip 7. One side of the second key lever 6a has a rectangular protrusion 6b integrally formed to correspond to the rectangular protrusion 5d of the first key lever, and the first key lever is fitted to the protrusion 6b. A rectangular projection 6c is inserted into the groove and integrally rotatably coupled via the pin 8 so as to be integrally formed.

Accordingly, for example, when the driver inserts a key into the first key cylinder to rotate the first key cylinder clockwise or counterclockwise, the rotational movement of the first key cylinder is transmitted to the second key cylinder, and thus the second key cylinder. Is rotated integrally, and the first key lever rotates together with the second key cylinder by the rotational movement of the second key cylinder while the door lock rod is raised or lowered through the second key lever to lock or release the door latch. do.

However, when the vehicle is repeatedly stolen by inserting a stolen tool such as a driver into the key groove of the first key cylinder for the purpose of theft of the vehicle, the fastening force of the fastening bolt of the key cylinder housing is loosened, and the key as shown in FIG. The entire cylinder can be rotated upwards, in which case the first key cylinder is pinned to the second key cylinder, so only the first key cylinder is rotated upwards and the second key cylinder Since the second key lever is not rotated, the door latch is not undesirably released.

As shown in FIG. 6, even when the key cylinder bundle including the first key cylinder is rotated downward by using a stolen tool, the second key lever is not rotated in the same manner as above, so that the door latch is undesirably released and the door is released. There is no fear of opening.

On the other hand, as shown in Fig. 7 and 8, respectively, when rotating the bundle of the key cylinder left or right by using the stolen tool, the first, second and second key levers around the pin connection portion of the first key lever, As the two key levers are rotated relative to each other without being rotated integrally, the door lock rod is raised or lowered so that the door latch is not undesirably released. As shown in FIG. 9, the key cylinder bundle is moved up and down and left and right by the stolen tool. Even if the rotation occurs in the same direction, only relative rotational movements occur around the pin connection portions of the first and second key cylinders and the pin connection portions of the first and second key levers, so that the door lock rod is raised or lowered so that the door latch It is not unintentionally liberated.

As described above, according to the door lock structure of the vehicle according to the present invention, the door lock rod is raised or moved even if the stolen tool is inserted into the key cylinder for the purpose of theft of the car to move the entire bunch of key cylinders in the vertical direction or rotate in the horizontal direction. Since there is no fear that the door latch will be released by falling, it is possible to reliably prevent theft of the car.

Claims (4)

A first key cylinder in which a key groove is formed to receive the key, a second key cylinder connected to the first key cylinder so as to be rotatable up and down via a pin, and a first key lever fixedly mounted to the second key cylinder. And a second key lever fixedly attached to one end of the door lock rod connected to the door latch while being connected with the pin so as to be relatively rotatable from side to side with respect to the first key lever. The door lock structure of claim 1, wherein the first key cylinder is rotatably received in the housing, and the bracket is formed to be fixed to the housing of the outer door handle. The semi-circular fastening portion is integrally formed at the rear end of the first key cylinder, and the semi-circular fastening portion corresponding to the fastening portion is formed at the front end of the second key cylinder. The door lock structure of the vehicle, characterized in that fastened relative to the upper and lower by the pin. 4. The method of claim 3, wherein the first key lever is formed integrally with the outer circumferential surface of the second key cylinder, and on one side of the outer circumferential surface is provided with a protrusion having a recess in the shape of a d-shaped (c). The key lever forms a circular shape and is fixedly mounted to the door lock rod through a clip, and a rectangular protrusion is integrally formed on one outer circumferential surface of the key lever so as to correspond to the square protrusion of the first key lever. The door lock structure of the vehicle, characterized in that formed in the fitting groove of the lever is formed integrally with a rectangular projection is coupled to rotate relative to the pin via a pin.

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