JP2556792B2 - Automotive door lock anti-theft actuator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antitheft actuator for a vehicle door lock, which is capable of locking / unlocking a door lock by driving a motor and preventing unlocking operation by fraudulent activity.

2. Description of the Related Art Conventionally, as an anti-theft device for a vehicle door lock, there is one disclosed in, for example, Japanese Patent Laid-Open No. 55-65681. This device moves the rack connected to the locking / unlocking lever of the door lock by the forward / reverse rotatable motor housed in the casing, and the locking / unlocking operation can be performed by driving the motor. Locking operation with a key or other means drives the anti-theft motor housed in the casing separately from the locking / unlocking motor to engage the lock claw with the rack so as to restrain the movement in the unlocking direction. By engaging the lock and unlock levers, the unlocking operation of the locking and unlocking levers is restrained to prevent the unlocking operation due to an illegal act.

[0003]

However, in the conventional device as described above, the motor for locking / unlocking the door lock and the anti-theft motor for restraining the unlocking / unlocking operation of the locking / unlocking lever by an illegal act. Since two motors of and are required, the number of components increases and the configuration becomes complicated,
There is a problem that the cost increases.

In view of the above-mentioned problems of the prior art, the present invention provides a vehicle door lock which can be operated electrically and anti-theft with a single motor and has improved anti-theft operation. It is intended to provide an antitheft actuator.

[0005]

To achieve the above object, the device of the present invention comprises a motor, an operating lever which is connected to a locking / unlocking lever of a door lock, and is movable to a locking position and an unlocking position. The engaging groove portion provided on the lever and the engaging portion that can be rotated forward and backward by decelerating the rotation of the motor and can be engaged with and disengaged from the engaging groove portion are formed by the rotational movement. By rotating the operating lever to the locking position or the unlocking position by engaging and disengaging with the engaging member, the engaging portion engages with the engaging groove portion and can be stopped at the antitheft position for restraining the operating lever to the locking position. , An anti-theft position detection switch that detects the anti-theft position of the rotating body, and a control circuit that can rotate the rotating body forward and backward to move to the anti-theft position regardless of whether the operating lever is in the locked position or the unlocked position. It is characterized by having.

[0006]

With the antitheft operation, when the operating lever is in the locked position, the motor reverses and the rotating body moves toward the antitheft position where the engaging portion engages with the engaging groove portion of the operating lever. . When the rotating body reaches the anti-theft position, this is detected by the anti-theft position detection switch, and the rotating body stops at the anti-theft position. When the actuating lever is in the unlocked position, the motor rotates in the forward direction and the engaging part enters into the engaging groove and engages, moving the actuating lever to the locked position, and the rotating body to the antitheft position. When it moves to, the anti-theft position detection switch detects the anti-theft position, the rotating body stops at the anti-theft position where the engaging portion engages with the engaging groove, and the operating lever, that is, the unlocking lever of the door lock is unlocked. The operation is blocked, and the unlocking operation by fraud is prevented. That is, the anti-theft state can be obtained by performing the anti-theft operation regardless of whether the actuating lever is in the locked position or the unlocked position.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. (1) is a motor which is housed in the case (2) and can rotate forward and backward, and (3) is pivotally mounted in the case (2) by a shaft (4) and is integral with the rotation shaft of the motor (1). The worm wheel (rotating body) (6) that meshes with the worm (5) that rotates normally and forms a speed reducing mechanism that can rotate in the forward and reverse directions. The shaft (7) is attached to the case (2).
The actuating lever pivotally attached by means of the lever can move between the locked position shown in FIG. 2 and the unlocked position shown in FIG. (8) is the axis
It is an output lever that rotates integrally with the operating lever (6) via (7) and is connected to a locking / unlocking lever (not shown) of the door lock, and the operating lever (6) moves to the locked position and the unlocked position. By doing so, the locking / unlocking lever can be moved to the locking position where the door opening operation of the door lock is disabled and the unlocking position where the door opening operation is enabled.

On one side surface of the worm wheel (3), a plurality of (four in the present embodiment are formed at equal intervals of 90 degrees) protruding toward one side surface of the operating lever (6) are engaged. The parts (3a) to (3d) are formed, and an anti-theft position detection switch (10) for detecting the anti-theft position of the worm wheel (3) is provided between the other side surface and the case (2). .
This anti-theft position detection switch (10) is a worm wheel
(3) Four movable contacts (9a) to (9d) attached at positions overlapping the engaging portions (3a) to (3d) on the other side surface, and fixed to the case (2). At the antitheft position shown in Fig. 1, the fixed switch (1) that comes into contact with any of the movable contacts (9a) to (9d)
It consists of 1) and stops the power supply to the motor (1) and stops the worm wheel (3) in the anti-theft position when one of the movable contacts contacts the fixed contact (11) in the anti-theft position. is there.

On one side surface of the actuating lever (6), both ends are open, and an arcuate groove portion (6a) centered on the shaft (7) and a shaft (7) from the center substantially inside the groove portion (6a). ) Side, the engaging groove portions (6b) that extend in the radial direction toward which the engaging portions (3a) to (3d) can be engaged and disengaged are provided as recesses, and the worm wheel (3) is in any direction. When it is rotated to any one, any one of the engaging portions is engaged with the engaging groove portion (6b), and the operating lever (6) can be moved to the locking position or the unlocking position. Further, on the outside of the groove portion (6a), the engaging groove portion faces the engaging groove portion (6b), and abuts when each engaging portion is separated from the engaging groove portion (6b) by the rotation of the worm wheel (3), A stopper portion (6c) for preventing further rotation of the worm wheel (3) is formed.

As shown in FIG. 1, the worm wheel (3)
When the is in the antitheft position, the operating lever in the locked position
Any one of the engaging portions engages with the engaging groove portion (6b) of (6) to prevent movement of the operating lever (6) in the unlocking direction, and to unlock / unlock the door locking / unlocking lever. Can be blocked.

FIG. 5 shows an embodiment of the control circuit of the present invention, in which (12) is a lock / unlock detection switch which is turned on by detecting that the operating lever (6) has moved to the lock position. (12a), and also has an unlock detection switch (12b) that is turned on by detecting that it has moved to the unlock position.

Reference numeral (13) is an anti-theft operation switch which is provided in a remote control section such as a key plate and has an anti-theft unlock switch (13a) and an anti-theft lock switch (13b). The anti-theft lock switch (13b) is turned on. By doing so, the worm wheel (3) is moved to the anti-theft position regardless of whether the actuating lever (6) is in the locked position or the unlocked position to prevent the door lock from being unlocked and to prevent theft. By turning on the unlocking switch (13a), the worm wheel (3) is moved from the antitheft position to the unlocking position.

That is, by turning on the anti-theft lock switch (13b), when the lock detection switch (12a) is turned on, the AND circuits (14), (15) and the OR circuit (19) are turned on and the drive circuit is turned on. Turn on the unlocking drive of (18) to turn on the motor.
(1) is normally rotated to move the worm wheel (3) to the anti-theft position, and when the unlock detection switch (12b) is turned on, the AND circuits (16) and (17) are turned on to drive the drive circuit. The locking drive of (18) is turned on, the motor (1) is rotated in the reverse direction, and the worm wheel (3) is moved to the antitheft position.

Next, the operation of the present invention will be described. FIG. 2 shows a locked state in which the engaging portion (3a) of the worm wheel (3) is engaged in the groove portion (6a) of the actuating lever (6) in the locked position. In this state, when the lock knob for manual operation connected to the locking / unlocking lever of the door lock is manually unlocked, the actuating lever (6) moves through the locking / unlocking lever and the output lever (8) to It rotates clockwise and moves to the unlocked position shown in FIG. 3, and accordingly, the engaging portion (3
a) relatively moves in the groove (6a) and disengages from one end of the groove (6a), and then another engaging portion (3b) enters the groove (6a) to engage the engaging groove (6b). ). Therefore, since the movement of the manual operation is not transmitted to the worm wheel (3), the manual operation can be performed lightly.

When the locking operation is manually performed from the unlocked state shown in FIG. 3, the operating lever (6) is moved to the locking position via the locking / unlocking lever and the output lever (8), and the engaging groove portion is again provided.
The groove (6a) is inserted so that the engaging portion (3a) faces (6b). That is, any one of the engaging portions (3a) to (3d) is always disposed at a position facing the engaging groove portion (6b), and any one of the engaging portions (3a) to (3d). The other one is arranged at a portion facing the engaging groove portion (6b) when the operating lever (6) is manually moved to the locking position or the unlocking position.

When the electric operation switch (not shown) provided in the vehicle is unlocked in the locked state shown in FIG.
(1) reversely rotates and the worm wheel (3) rotates clockwise, so that the engaging portion facing the engaging groove portion (6b)
(3a) enters into the engaging groove (6b) and engages, and the operating lever
Move (6) to the unlock position. Then, the engaging part (3a)
Disengages from the engagement groove (6b) and comes into contact with the stopper (6c) to prevent rotation of the worm wheel (3), and stops at the position shown in FIG. 3 to complete the unlocking operation by electric drive. To do. Further, in the unlocked state shown in FIG. 3, when the electric operation switch is locked, the motor (1) normally rotates and the worm wheel (3) rotates counterclockwise,
The engaging portion (3b) facing the engaging groove portion (6b) is an engaging groove portion.
(6b) Enter and engage and move the operating lever (6) to the locked position. Next, the engaging part (3b) is engaged with the engaging groove part (6b).
The worm wheel (3) is prevented from rotating by contacting the stopper portion (6c) after being released from the worm wheel (3) and stopped at the locking position to complete the locking operation. That is, the worm wheel (3) is operated by the rotation of the motor (1) and the operating lever (6).
When is moved to the locking position or the unlocking position, the rotation is immediately stopped to complete the locking / unlocking operation, and the locking / unlocking operation is completed in a short time without making unnecessary movements.

Next, the anti-theft operation will be described. When the anti-theft lock switch (13b) of the anti-theft operation switch (13) is turned on, when the operating lever (6) is in the locked position, the lock detection switch (12a) is turned on.
4) (15) and OR circuit (19) are turned on, the unlock circuit part of the drive circuit (18) is turned on, the motor (1) is rotated in reverse, and the worm wheel (3) is rotated counterclockwise. Turn to. Engagement part
(3a) engages with the engaging groove (6b) and the worm wheel (3)
1 moves to the anti-theft position shown in FIG. 1, the anti-theft position detection switch (10) detects the anti-theft position and turns on, so that the AND circuit (15) turns off and the motor (1) stops rotating, The worm wheel (3) stops in the anti-theft position. Also, when the operating lever (6) is in the unlocked position, the unlock detection switch (12b) is turned on, so that the AND circuits (16) (17)
Is turned on, the locking circuit part of the drive circuit (18) is turned on, the motor (1) is rotated in the normal direction, and the worm wheel (3) is rotated in the clockwise direction, so that the engagement groove part (6b) is opposed. Engaging part
(3a) enters into the engaging groove (6b) and engages, and the operating lever
When (6) is moved to the locked position and the worm wheel (3) is moved to the anti-theft position, the anti-theft position detection switch (10) detects the anti-theft position, the AND circuit (17) is turned off, and the motor is turned off.
The rotation of (1) stops, and the worm wheel (3) stops at the anti-theft position where the engaging portion (3a) engages with the engaging groove portion (6b),
The unlocking operation of the operating lever (6), that is, the locking / unlocking lever of the door lock is blocked, and the unlocking operation by fraudulent acts is prevented.

That is, even if the operating lever (6) is in either the locked position or the unlocked position, the antitheft operation can be performed by the antitheft operation. When the anti-theft unlock switch (13a) of the anti-theft operation switch (13) is turned on in the anti-theft state, the OR circuit (19) is turned on and the drive circuit (1
The unlocking circuit of 8) turns on, the motor rotates in the reverse direction, the worm wheel (3) rotates counterclockwise, and the operating lever (6) is moved to the unlocking position, and the above unlocking operation is performed. Similarly, it is unlocked.

[0019]

As described above, according to the present invention, the locking / unlocking operation and the anti-theft operation can be performed electrically by one motor, and the actuating lever can be placed in either the locked position or the unlocked position with a simple structure. Even if there is, the anti-theft operation can bring the anti-theft state, and the operability is improved.

[Brief description of drawings]

FIG. 1 is a plan view of an actuator with a cover plate of a case removed in an antitheft state according to an embodiment of the present invention.

FIG. 2 is a plan view similar to FIG. 1 in a locked state.

FIG. 3 is a plan view similar to FIG. 1 in an unlocked state.

FIG. 4 is a perspective view of a main part of an operating lever.

FIG. 5 is a circuit diagram showing an example of a control circuit.

[Explanation of symbols] (1) Motor (2) Case (3) Worm wheel (rotating body) (3a) to (3d)
Engagement part (6) Operating lever (6a) Groove part (6b) Engagement groove part (6c) Stopper part (8) Output lever (10) Anti-theft position detection switch (12) Lock / unlock detection switch (13) Anti-theft operation switch (14) ) (15) (16) (17) AND circuit (18) Drive circuit (19) OR circuit

Claims (1)

(57) [Claims] 1. A motor, an operating lever that is connected to a locking / unlocking lever of a door lock and is movable to a locking position and an unlocking position, an engagement groove portion provided in the operating lever, and decelerates rotation of the motor. It has an engaging part that can rotate forward / reversely and can be engaged / disengaged with the engaging groove. When the engaging part engages / disengages with the engaging groove due to rotational movement, the operating lever is moved to the locked position or the unlocked position. At the same time, the engaging portion engages with the engaging groove portion and can be stopped at the antitheft position for locking the operating lever in the locking position, the antitheft position detection switch for detecting the antitheft position of the rotating body, and the operating lever. A door lock antitheft actuator, comprising: a control circuit capable of rotating the rotating body forward and backward to move to the antitheft position regardless of whether it is in the locked position or the unlocked position.