KR20030021836A - Operation structure for dead-locking of door latch for antomobile - Google Patents

Abstract

PURPOSE: A dead-locking operation structure of a vehicle door latch is provided to prevent a vehicle from being stolen by making a locking state be released through an operation of a door key or a remote controller when a door latch is placed at a dead-locking position. CONSTITUTION: A connection lever(30) has a center region as a hinge point installed at a back plate(20) between a locking lever(22) and an actuator lever(42) and a guide hole(52) at the other end. The first safety knob lever(24) of a vertically bent shape has locking and slot holes(36,34) formed at one end. The second safety knob lever(26) has a lower end connected to a top of the first safety knob lever(24), and is installed at a slide hole(38) formed at the back plate(20) so as to be slid upward and downward. A lever(32) is formed at an upper surface of the actuator lever, and is placed to penetrate the slot and guide holes(34) in this order. The back plate(20) is installed at a surface of a case(54), and has three fixing holes(48) so that the actuator lever(42) moves by a three-step angle.

Description

Operation structure for dead-locking of door latch for antomobile}

The present invention relates to a deadlocking and releasing structure of a door latch for an automobile, and more particularly, an automobile which prevents the door lock state from being released by a forced release mechanism, thereby preventing theft of the vehicle in advance. It relates to a deadlocking and releasing structure of the door latch.

Typically, a door latch for an automobile is installed inside the door panel and is a component that is responsible for locking and releasing the door, and is usually manufactured to have two operating modes of locking or unlocking.

According to the structure of the door latch, there is a locking lever operating in the locked or unlocked position by the operation of the door key, and the locking and unlocking movement by the operation of the safety knob installed at the upper end of the door trim in the interior of the vehicle. There is a safety knob and an actuator lever that rotates to the locked and unlocked position by the operation of the remote control.

Accordingly, in the case of forcibly opening the door locked in the outside of the vehicle, the safety knob may be switched to the unlocked position by using a predetermined force release mechanism, which may cause theft of the vehicle. It is the cause.

Therefore, the present invention is to perform the operation of the door latch for the vehicle in three steps, such as the unlocking position, the locking position, the anti-theft deadlocking position, when the door latch is in the anti-theft deadlocking position of the door key or remote control It is an object of the present invention to provide a deadlocking operation structure of a door latch for a vehicle that can prevent theft of a vehicle in advance by allowing the lock to be released only by manipulation.

Figure 1a, 1b, 1c is a perspective view, front view, rear view showing an unlocked state of a door latch for a vehicle according to the present invention.

Figures 2a, 2b, 2c is a perspective view, front view, rear view showing the locked state (central locking) of the door latch for a vehicle according to the present invention.

Figure 3a, 3b, 3c is a perspective view, front view, rear view, showing the anti-theft deadlocking state of the vehicle door latch according to the present invention,

Figure 4a, 4b is a perspective view and a front view showing a state in which the first safety knob is idle in the anti-theft deadlocking state of the door latch for automobiles according to the present invention.

[Description of Symbols for Main Parts of Drawing]

10 door latch 20 back plate

22: Locking lever by key 24: First safety lever

26: second safety knob 28: control lever

30: connection lever 32: flip lever

34: slot hole 36: locking hole

38: slide hole 40: actuator portion

42: actuator lever 44: actuator fixing projection

48: fixing groove for each actuator position

50: cam 51: cam groove

52: guide hole 54: housing

56: motor 58: first gear

60: reversing lever spring

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

The present invention for achieving the above object; An actuator portion including an actuator lever rotatably mounted at a predetermined angle, and a body portion including a lever for locking by a key rotatably mounted at a predetermined angle so that the striker is locked or unlocked to the latch. In the door latch, a center of the hinge is mounted on the back plate 20 between the locking lever 22 and the actuator lever 42 by the key, and one end thereof is the locking lever 22 by the key. Fixed to the other end, and a connection lever 30 having a guide hole 52 formed at the other end thereof; The hinge point and the center portion of the connection lever 30 are coaxially mounted so as to be rotatable at a predetermined angle, and at one end, a vertically bent shape having a locking hole 36 and a slot hole 34 formed together. 1 safety knob 24; A lower end end is fastened to an upper end of the first safety knob 24, and an upper end end is slidably mounted up and down in a slide hole 38 formed in the back plate 20 of the door latch. 26); It is formed to protrude from the upper surface of the rear end of the actuator lever 42, so as to project through the slot hole 34 of the first safety knob 24 and the guide hole 52 of the door key lever 30 in order. A positioning lever 32 positioned thereon; It is integrally attached to the surface of the housing 54 of the actuator portion 40, the actuator lever 42 is composed of a back plate 20 formed with three fixing grooves 48 to be fixed by moving at three angles that It features.

In a preferred embodiment, the actuator fixing projection 44 is integrally formed on the front bottom surface of the actuator lever 42 to maintain the positions alternately inserted into the three fixing grooves 48 formed on the back plate 20. It features.

In a more preferred embodiment, the three fixing grooves 48 of the back plate 20 in which the actuator fixing protrusions 44 are alternately inserted into the actuator lever 42 at the rotational movement angle are sequentially opened for the door opening and the central locking. For theft, anti-theft deadlocking is characterized in that it is formed.

In addition, the slot hole 34 of the first safety knob 24 is long and vertically penetrated / formed, the engaging hole 36 is concave inwardly extending from the lower end of the slot hole 34 through / Formed.

In particular, the folding lever 32 protruding integrally from the upper surface of the rear end of the actuator lever 42 is formed when the actuator lever 42 is in the door unlocking and door locking position. The actuator lever 42 is inserted into the locking hole 36, and when the actuator lever 42 is in the anti-theft locking position, it is separated from the locking hole 36 and positioned in the slot hole 34.

Herein, the present invention will be described in more detail as an embodiment, and each component for the three-step operation of the door latch will be described below with reference to FIGS. 1A to 4B.

The door latch 10 is largely divided into a back plate 20 to which various links and the like are mounted, and an actuator part 40 to which a connector and a motor are installed.

The back plate 20 of the door latch 10 has a link associated with the door key side, a link associated with the safety knob side mounted at the upper side of the indoor door, and rotates at a predetermined angle by a key to lock the door latch. And a locking lever 22 or the like with a key which is in charge of unlocking.

More specifically, as a link associated with the door key side in the projection formed in the center of the upper end of the locking lever 22, it is mounted to protrude into the slide hole of the control lever 28 to move up and down.

On the other hand, in the case 54 of the actuator portion 40, a motor 56 having a connector serving as a power supply, a screw shaft driven by receiving power from the connector, and a screw shaft of the motor 56. A first gear 58 of a helical shape that rotates in engagement with the second gear; a second gear (not shown) of a spur gear type that is fixed coaxially with the first gear 58 and rotates at the same time; A third gear (not shown) in the form of a spur gear that is engaged and receives rotational force, and a cam 50 fixed coaxially under the third gear to move at a predetermined angle by the rotational force of the third gear. Consists of.

On the other hand, a protrusion (not shown) is integrally formed on the bottom of the third gear, and a concave groove 51 is formed on one surface of the cam 50 coaxially with the third gear. The protrusion is positioned in such a manner that it is inserted into the concave groove 51 to rotate the cam 50 at a predetermined angle.

In addition, the components of the actuator unit 40 listed above are installed in the interior of the housing 54, the rear of the housing 54 of the present invention to move at the same angle according to the movement angle of the cam 50 The actuator lever 42 is mounted.

Here, the actuator lever 42 of the present invention is formed in a vertical bent shape, so that the center portion thereof is engaged with the rotation axis of the cam 50 so as to be rotatable at the same time.

In particular, one end of the actuator lever 42 is gradually pointed in shape, the bottom of which the fixing projections 44 are integrally formed, on the other side of the upper lever lever 32 is protruded and formed integrally. .

Meanwhile, while the actuator lever 42 moves at three angles, the back plate 20 having three fixing grooves 48 formed thereon to insert and fix the fixing protrusions 44 is provided with a housing of the actuator portion 40. 54) It is attached integrally to the surface.

Here, the central portion of the first safety knob lever 24 of the vertical bent shape is mounted to the back plate 20 between the locking lever 22 and the actuator lever 42 by a hinge, the first safety knob The locking hole 36 and the slot hole 34 pass through / form the right end of the lever 24 together.

In addition, an upper end of the first safety knob 24 is fastened to the lower end of the second safety knob 26 by a hinge, and an upper end of the second safety knob 26 is the back plate 20. It is mounted to slide up and down in the slide hole 38 formed on the upper side.

In particular, the slot hole 34 of the first safety knob 24 is formed to penetrate to have a large width up and down, and the locking hole 36 is formed on the left side of the slot hole 34 (the first safety knob). To the center of the lever).

At this time, the turning lever 32 of the actuator lever 42 is protruded and positioned through the slot hole 34 of the first safety knob 24.

Here, the center portion of the connection lever 30 is rotatably mounted at a predetermined angle, and is mounted coaxially with the hinge axis of the central hinge point of the first safety knob 24.

At this time, the left end of the connection lever 30 is fixed to the right side of the locking lever 22 by the key, the guide hole 52 is formed on the right end of the connection lever 30, The folding lever 32 protrudes through the guide hole 52.

As a result, the turning lever 32 of the actuator lever 42 is the slot hole 34 or the locking hole 36 of the first safety knob 24 and the guide hole 52 of the connection lever 30. Are projected one after the other.

Here, the state of the three-step operation of the door latch for a vehicle according to the present invention will be described as follows.

1A, 1B, and 1C are perspective views, front views, and rear views illustrating an unlocking state of a door latch for a vehicle according to the present invention.

The unlocking state of the door latch 10 is a state in which the door is opened and closed freely, and the right end of the locking lever 22 by the key is moved upward by a predetermined angle (see the perspective view of FIG. 1A). )to be.

In addition, an upper end of the second safety knob 26 is in a state located at a lower end of the slide hole 38 of the back plate 20 (see the front view of FIG. 1B), and the fixing protrusion of the actuator lever 42 is provided. 44 is a state inserted into the leftmost one of the fixing grooves 48 formed in the back plate 20 (see the front view of FIG. 1B), and in particular, the lever 32 for the turning of the actuator lever 42. Is protruded through the engaging hole 36 of the first safety knob lever 24 and the guide hole 52 of the connection lever 30 (see FIGS. 1A and 1B).

In such a state, when the door is locked using a door key or a remote controller, the door latch is locked as shown in FIGS. 2A, 2B, and 2C.

That is, the locked state of the door latch 10 is a state in which the door cannot be opened from the outside except means such as a door key or a remote control, and the right end of the locking lever 22 by the key is predetermined downward. The state is moved at an angle (see perspective view of Fig. 2a).

In addition, an upper end of the second safety knob 26 is in a state located at an upper end of the slide hole 38 of the back plate 20 (see the front view of FIG. 2B), and the fixing protrusion of the actuator lever 42 is provided. 44 is a state inserted in the center (based on the front view of Figure 2b) of the fixing groove 48 formed in the back plate 20, in particular, the lever 32 for the folding of the actuator lever 42 is It protrudes through the engaging hole 36 of the first safety knob 24 and the guide hole 52 of the connection lever 30.

As described above in more detail the action that the door latch is locked.

As the right end of the locking lever 22 by the key is moved downward by a predetermined angle, the left end of the connection lever 30 is moved downward and the right end is moved upward by a predetermined angle.

At the same time, as the right end of the connection lever 30 moves upward, a force is applied to the folding lever 32 that is protrudingly inserted into the guide hole 52 of the connection lever 30 to be flipped upward. .

At the same time, since the turning lever 32 is inserted into the locking hole 36 of the first safety lever 24, the right end of the first safety knob 24 is turned over. Is lifted upwards.

As such, when the door latch 10 is locked, the door may not be opened from the outside without using the door key or the remote controller as described above.

However, a vehicle theft accident may occur by forcibly releasing the locked state of the door latch 10 by using theft means (door locking force release means such as wire, steel wire, etc.) outside the door.

That is, by interfering the theft mechanism to move the second safety knob 26 to the bottom, the right end of the first safety knob 24 is moved a predetermined angle downward, and at the same time, the first safety knob 24 The folding lever 32 which is caught in the locking hole 36 of the actuator is turned down, and accordingly, the fixing protrusion 44 of the actuator lever 42 is fixed to the leftmost side of the back plate 20. 48), the door latch 10 is eventually switched to the door unlocking state as shown in FIGS. 1A and 1B, and the door is opened.

In order to prevent this, as shown in the accompanying Figures 3a, 3b, 3c, the door latch is operated in the anti-theft lock state.

Means for switching to the anti-theft lock state is to use a remote control.

The anti-theft locking state is achieved by moving only the actuator lever 42 at a predetermined angle in the door locking state shown in FIGS. 2A, 2B, and 2C.

Therefore, at the same time as the operation of the remote controller, the current signal further rotates the cam 50 at a predetermined angle as shown in FIG. 3C.

As the cam 50 rotates, the coaxial actuator lever 42 is further rotated at a predetermined angle, and accordingly, as shown in FIGS. 3A and 3B, the fixing protrusion 44 of the actuator lever 42 is rotated. ) Is inserted into the fixing groove 48 formed on the rightmost side of the back plate 20.

Simultaneously with this, the turning lever 32 of the actuator lever 42 exits the catching hole 36 of the first safety lever 24 and moves to the slot hole 34 next to it. .

Therefore, even if the theft mechanism interferes with moving the second safety knob 26 and the first safety knob 24 up and down, the first safety lever (as shown in FIGS. 4A and 4B) is attached. 24 is idling at a predetermined angle around the hinge point, and the force is not applied to the turning lever 32 located in the slot hole 34 of the first safety knob 24, the door It is impossible to release the lock state of the latch 10.

More specifically, as the theft mechanism interferes with the second safety knob 26, the upper end of the second safety knob 26 located at the top of the slide hole 38 of the back plate 20. As shown in FIG. 4A and FIG. 4B, when moving to the lower end of the slide hole 38, the right end of the first safety knob 24 also rotates downwardly around the hinge point. At this time, the lever will not apply any force to the lever for lever 32 at all.

Of course, the upper trajectory of the second safety knob lever 26 moving along the slide hole 38 of the back plate 20 and the idle trajectory of the right end of the first safety knob 24 coincide with each other. So that the idling range of the right end of the first safety knob 24 is within a range where no force is applied to the turning lever 32.

As such, when the door latch 10 is switched to the anti-theft deadlocking state, it is impossible to release the lock of the door latch by the theft mechanism without the operation of the door key or the remote controller, thereby preventing a vehicle theft accident. .

As described above, according to the deadlocking operation structure of the vehicle door latch according to the present invention, the operation of the door latch for the vehicle is to be made of three steps: the unlocking position, the locking position, the anti-theft deadlocking position When the door latch is in the anti-theft deadlocking position, the lock cannot be released by the theft device without the door key or the remote control, thereby preventing theft of the vehicle in advance.

Claims (6)

An actuator part including an actuator lever rotatably mounted at a predetermined angle, and a body part including a body part including a locking lever rotatably mounted at a predetermined angle so that the striker is locked or unlocked to the latch. In The center of the back plate 20 between the locking lever 22 and the actuator lever 42 is mounted as a hinge point, one end is fixed to the locking lever 22 by the key, the other end A connection lever 30 having a guide hole 52 formed therein; The hinge point and the center portion of the connection lever 30 are coaxially mounted so as to be rotatable at a predetermined angle, and at one end thereof has a vertically bent shape having a locking hole 36 and a slot hole 34 together. A safety knob 24; A lower end end is fastened to an upper end of the first safety knob 24, and an upper end end is slidably mounted up and down in a slide hole 38 formed in the back plate 20 of the door latch. 26); Is formed to protrude from the upper surface of the rear end of the actuator lever 42, and protrudes through the slot hole 34 of the first safety lever 24 and the guide hole 52 of the connection lever 30 in order A turning lever 32; It is integrally attached to the surface of the case 54 of the actuator portion 40, the actuator lever 42 is composed of a back plate 20 is formed with three fixing grooves 48 formed to move by fixing at three angles A deadlocking operation structure of a door latch for an automobile. The method of claim 1, The deadlocking operation structure of the door latch for automobiles, characterized in that the fixing projections 44 which are alternately inserted into the three fixing grooves 48 formed in the fixing plate 46 are integrally formed on the bottom surface of the front end of the actuator lever 42. . The method according to claim 1 or 2, The three fixing grooves 48 of the fixing plate 46 in which the fixing protrusions 44 are alternately inserted into the actuator lever 42 at rotation angles are sequentially formed for door opening, door locking, and anti-theft deadlocking. Deadlocking operation structure of the door latch for automobiles, characterized in that. The method of claim 1, The slot hole 34 of the first safety knob 24 is long and vertically penetrated / formed, and the locking hole 36 is concave inwardly extending from the lower end of the slot hole 34 to be penetrated / formed. Deadlocking operation structure of the door latch for automobiles, characterized in that. The method of claim 1, The locking lever 32 protruding integrally from the upper surface of the rear end of the actuator lever 42 is a locking hole of the first safety lever 24 when the actuator lever 42 is in the door unlocking and door locking position. Inserted into the (36), when the actuator lever 42 is in the anti-theft lock position, the deadlocking of the door latch for a vehicle, characterized in that it is separated from the locking hole 36 and positioned in the slot hole (34) Working structure. The method of claim 1, The locking lever 22 by the above-mentioned key is the actuator 42, the folding lever 32, the first safety knob lever 24, the locking groove 36, the slot 34, the A deadlocking operation structure for a door latch for an automobile, characterized in that the lever restoring spring is coupled and has a mechanism for rotating the same stroke from two to three steps.