JP2527817Y2 - Automotive door lock anti-theft device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle door lock antitheft device having a driving means capable of putting a door in an antitheft state in which an unlocking operation of the door lock by improper operation becomes impossible.

[0002]

2. Description of the Related Art As a conventional apparatus as described above, there is, for example, one disclosed in Japanese Patent Application Laid-Open No. 2-289776 filed by the present applicant. This device is provided in a door lock body, and links an unlocking lever and a key lever that can be moved to a locking position and an unlocking position with an electric actuator, and operates the actuator by a burglar operation from outside the vehicle. The locking / unlocking lever of the door lock is moved to the locking position, and the locking / unlocking lever is moved to the locking position to prevent the door from being moved from the unlocking position to the locking position. ing.

[0003]

However, the conventional device as described above can prevent an unlocking operation due to a fraudulent act by putting the key cylinder in a burglary state. When the key lever is forcibly moved in the unlocking direction, the force at that time is transmitted to the key lever and the locking / unlocking lever via the rod connecting the key cylinder and the key lever, and an excessive load acts on the key lever, thereby causing the key lever or the key lever to move. There is a possibility that the actuator or the like linked to the device is damaged or deformed, and the antitheft state is released.

The present invention has been made in view of the above-mentioned problems of the prior art, and even if the key cylinder is forcibly released in a burglary state in which the movement of the key lever is prevented, an excessive force is directly applied to the key lever or the like. It is an object of the present invention to provide an anti-theft device for an automobile door lock in which the anti-theft property is improved by preventing the force from acting.

[0005]

In order to achieve the above-mentioned object, an apparatus according to the present invention is connected to a key cylinder, and is provided with an unlocking position for enabling a door opening operation and a locking for disabling the door opening operation. and the key lever movable to a position, the keyless
Biasing means for biasing the bar towards at least the locking position
And a driving means capable of moving at least the key lever from the unlocked position to the locked position by electric operation, and having a stolen state for preventing the key lever from moving from the locked position to the unlocked position. In the antitheft device, the holder for connecting the key cylinder and the key lever is provided with the urging means in the antitheft state.
Holder force greater than the urging force in the key lever locking direction
When it is locked in the unlock direction, it
Touch and elastically deform in the direction opposite to the unlocking direction of the holder
To absorb the movement of the holder in the unlocking direction.
Characterized by having a deformed portion.

[0006]

When the anti-theft operation is performed, the driving means is operated to move the key lever to the locking position and to enter the anti-theft state in which the movement to the unlock position is prevented. In this burglary state, if the key cylinder is forcibly operated in the unlocking direction due to misconduct, the deformed portion of the holder is elastically deformed,
Absorbs the movement of the key cylinder, and the key lever directly
Since no excessive load is applied, the key lever is
It is securely held in the locked position, and the unlocking operation by theft can be reliably prevented.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. (1) is a door lock body provided in the door, a latch detachable from a striker (not shown) provided on the vehicle body side, and a locking plate detachable from the latch.
(Both are not shown) and the like, and an operating mechanism unit that houses a group of levers for controlling and operating the meshing unit (2).
(3).

Reference numeral (4) denotes a locking / unlocking lever rotatably supported by the operating mechanism (3). One end of the lever is connected to a manual operation locking / unlocking knob (5) disposed inside the door. It is connected via a rod (6) and the other end is a door lock body (1).
It is rotatably supported on the upper side and is connected to one end of a key lever (7) bent in a crank shape. An operating plate (4a) is fixed to one end of the locking / unlocking lever (4), and a driven portion (4b) is formed at the other end.

The other end of the key lever (7) has an elastically deformable holder (8) and a holder made of a synthetic resin material.
Through a rod (9a) rotatably connected to the connection hole (8c) of (8), it is connected to a key cylinder (9) arranged outside the door.

By operating the locking / unlocking operation knob (5) from the inside of the vehicle, the locking / unlocking lever (4) and the key lever (7) are moved through the rod (6) to the locking / unlocking lever (4) and the door lock body. A door opening operation handle (not shown) provided inside and outside the door against the urging force of a return spring (1a) which is a urging means for changing the urging direction provided between the door (1). The locking position shown in FIGS. 1 and 5 for disabling the operation and the unlocking position shown in FIG. 4 for enabling the same can be moved.

The holder (8) has a triangular groove portion (7) in which an operating end (7a) bent at the other end of the key lever (7) allows rotation in a range corresponding to an operating range of the key lever (7). 8a), and an operating end of a key lever (7) is provided on one side wall of the groove (8a).
By contacting (7a), the outside , that is, the holder
Deformation part that can be elastically deformed in the direction opposite to the unlocking operation direction (8)
(8b) is formed. The deformation part (8b) is a locking / unlocking knob (5).
When the key cylinder (9) is operated with a normal operating force, it is not deformed, but is deformed when a large load acts on the holder (8). In other words, the elastic force of the deformation portion (8b) is set to be at least larger than the urging force of the return spring (1a).

Therefore, by unlocking the key cylinder (9) using the key plate from the outside of the vehicle, the holder
The key lever (9) and the locking / unlocking lever (4) are moved to the unlocking position against the urging force of the return spring (1a) without deforming the deformed portion (8b) of (8) via the holder (8). Can be moved.

(10) and (11) are an unlock detection switch and a lock detection switch fixed on a bracket (12) extending from the operating mechanism (3), and the locking and unlocking lever (4) is in an unlocked state. In this case, the position of the operation plate (4a) is detected by the unlock detection switch (10), and in the locked state, the lock detection switch (11) detects the position and detects each position. .

An actuator (13) is a driving means for moving the locking / unlocking lever (4) to a locking position and an unlocking position by driving a motor. The actuator (13) is a bracket (1) of the door lock body (1).
2) An output lever (14) is fixed to the case (13) and is rotatable forward and reverse through a speed reduction mechanism by a forward and reverse rotatable motor provided in the case (13). I have. The speed reduction mechanism is set to a speed reduction ratio such that reverse rotation from the output lever (14) side is substantially impossible.

The output lever (1) of the actuator (13)
4) and the driven part (4b) of the locking / unlocking lever (4) is such that when the output lever (14) is at the neutral position shown by a two-dot chain line in FIGS. 4 and 5, the output lever (14) is unlocked. Follower (4b) of lock lever (4)
When the output lever (14) rotates from the neutral position in the locking direction or the unlocking direction, the output lever (14) comes into contact with the driven portion (4b), and the locking / unlocking lever (4) is released. )
Is determined so that it can be moved to the locking position or the unlocking position. The output lever (14) can be rotated from the neutral position in the locking direction or the unlocking direction by the rotation of the motor by a remote control switch provided inside and outside the vehicle compartment and a switch linked to the operation of the key cylinder (9). it can.

(15) is a neutral detection switch for detecting the neutral position of the output lever (14). When unlocking the remote control switch inside and outside the vehicle, the output lever (14) of the actuator (13) rotates in the locking direction from the neutral position, and the output lever (14) is actuated as shown by the solid line in FIG. The part (14a) enters the rotation locus of the driven part (4b) of the locking / unlocking lever (4), and the driven part
(4b), the locking / unlocking lever (4) is moved to the unlocking position, and the unlocking detection switch (10) detects this position. Let it.

As for the locking operation, the output lever (1
4) rotates clockwise from the neutral position, and the operating portion (14a) comes into contact with the driven portion (4b) as shown by a solid line in FIG. 5, and moves the locking / unlocking lever (4) to the locking position. When this position is detected by the lock detection switch (11), the motor is reversely controlled to return to the neutral position and rotate. When the output lever (14) is in the neutral position, the operating part (14a)
The operation from the locking / unlocking lever (4) side during manual operation of the locking / unlocking operation knob (5) interferes with the output lever (14). , Actuator (13)
Is not transmitted to the speed reduction mechanism.

When the locking operation is performed by the key cylinder (9) outside the vehicle or the remote control switch is operated to prevent theft, the actuator (13) is operated, and the output lever (14) is rotated clockwise from the neutral position. As shown in FIG. 1, the operating portion (14a) of the output lever (14) is a driven portion of the locking / unlocking lever (4).
(4b), the locking / unlocking lever (4) is moved to the locking position, and thereafter the output lever (14) is stopped at this position without returning to the neutral position, and the locking / unlocking lever (4) is stopped. In the unlocking position.

Therefore, in this burglary state, the unlocking operation is performed from the locking / unlocking knob (5) side and the key cylinder (9) side.
Even when the locking / unlocking lever (4) and the key lever (7) are to be moved to the unlocking position, the driven portion (4b) abuts on the output lever (14), and the movement in the unlocking direction is prevented. Therefore, the unlocking operation cannot be performed. In the theft state,
Even if the key cylinder (9) is forcibly operated in the unlocking direction due to wrongdoing, the locking / unlocking lever (4) and the key lever (7) come into contact with the output lever (14) of the actuator (13) in the unlocking direction. 1 is applied to the deformed portion (7a) of the holder (7), a load larger than that of the return spring (1a) acts on the deformed portion (7a). As shown in the figure, the key lever (7) is elastically deformed in a direction absorbing the movement in the unlocking direction, and only the holder (7) moves in the unlocking direction, but the key lever (7) and the locking / unlocking lever (4). Is securely held in the locked position without any overload. Therefore, the key lever (7) and the locking / unlocking lever
(4) There is no deformation.

[0020]

[Effects of the Invention] According to the present invention, the following effects can be obtained.
Can be (a) The holder connecting the key cylinder and the key lever is provided with a deformable portion which is elastically deformable in a direction to absorb the movement of the key lever in the unlocking direction when the movement of the key lever in the unlocking direction is restricted. As a result, even if the key cylinder or the like is unlocked by fraudulent action in the theft state, an excessive load may act on the key lever of the door lock .
Key lever, actuator, etc. were deformed
Or breakage can be prevented. (b) Holder itself or holder and key cylinder
The rod or key cylinder itself
Do not move in the same direction as the
Even if done, depending on their actions,
Can prevent locking, enhance anti-theft effect
And after such actions have taken place,
Aloc can be operated normally. (c) Unlocking with a normal key cylinder that is not stolen
During operation, the deformed part may be deformed and malfunction may occur.
The key lever is securely locked from the locked position to the unlocked position
Can be moved.

[Brief description of the drawings]

FIG. 1 is a front view of a door lock body showing one embodiment of the present invention.

FIG. 2 is a perspective view of the door lock body.

FIG. 3 is a perspective view of the holder.

FIG. 4 is an operation explanatory view of a main part showing an unlocking operation state.

FIG. 5 is an operation explanatory view of a main part showing a locking operation state.

[Explanation of symbols]

(1) Door lock body (1a) Return spring (biasing means) (4) Locking / unlocking lever (5) Locking / unlocking knob (7) Key lever (7a) Working end (8) Holder (8a) Groove (8b) Deformed part (9) Key cylinder (13) Actuator (drive means) (14) Output lever

Claims (1)

(57) [Scope of request for utility model registration] 1. A key lever connected to a key cylinder and movable to an unlocking position for enabling a door opening operation and a locking position for disabling a door opening operation ,
An urging means for urging at least toward the locking position, and an anti-theft state in which at least the key lever can be moved from the unlocking position to the locking position by electric operation , and the movement of the key lever from the locking position to the unlocking position is prevented. In a vehicle door lock antitheft device having a driving means, the key lever by the urging means is provided to a holder connecting the key cylinder and the key lever in the antitheft state.
-A force greater than the biasing force in the locking direction of
When hanging in the direction, it comes into contact with a part of the key lever,
It elastically deforms in the direction opposite to the unlocking direction of the holder,
A vehicle door lock antitheft device provided with a deformable portion for absorbing movement in the unlocking operation direction of the door.