JPH02289776A - Locking/unlocking method for car door lock and its device - Google Patents

Abstract

PURPOSE:To simplify a structure, reduce the number of parts, reduce the cost, and prevent illegal unlocking by preventing a locking/unlocking lever from being returned to the neutral position after locking only after the locking operation by an outside operation switch. CONSTITUTION:An actuator 13 with an output lever 14 is installed near the locking/unlocking lever 4 of a door lock. When locking or unlocking is performed by a locking/unlocking knob 5 on the indoor side and when unlocking is performed by a key cylinder 9 on the outdoor side using a key plate, a motor is reversed via locking and unlocking operation detecting switches 10 and 11 to return the output lever 14 to the neutral position after individual switches are operated and the output lever 14 is moved to locking and unlocking positions. On the other hand, when the locking operation is performed by the key cylinder 9 on the outdoor side, the output lever 14 is not returned to the neutral position and is stopped by a control circuit after it is moved to the locking position.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention can prevent unlocking due to theft, and
The present invention relates to a method and device for locking and unlocking an automobile door lock using an electric actuator, which also enables manual locking and unlocking.

[Conventional technology]

An example of a door lock locking/unlocking device capable of performing a conventional manual locking/unlocking operation and an electric locking/unlocking operation is disclosed in Japanese Utility Model Publication No. 58-9953.

This device rotates the operating lever of the torlock and the rotary plate, which is rotated by the motor drive of the actuator via the reduction gear, at a rotation angle set in the locking or unlocking direction from the neutral position. At the same time, the rotary plate is connected through a play equivalent to the stroke obtained by the operation, and the rotary plate is rotated forward and backward from the neutral position with a movement equivalent to the stroke of the operating lever, and after the set stroke is completed, the rotary plate is rotated in the reverse direction. By controlling the gear so that it always returns to the neutral position, the movement of the manual operation is prevented from being transmitted to the deceleration device, thereby enabling manual operation.

However, with this device, it is difficult to easily unlock the door by, for example, infiltrating the vehicle with a burglary tool between the window glass and the sash and pulling up the lock/unlock knob inside the vehicle. This poses an unfavorable problem in anti-theft measures.

Examples of solutions that solved this problem include, for example,
There is one disclosed in Japanese Patent No. 5-65681.

This device uses a motor installed in the casing that can rotate in forward and reverse directions to move a rack connected to the locking/unlocking lever of the door lock, allowing electric locking and unlocking operations, as well as locking with a key or other means from outside the vehicle. By operation,
The unlocking operation of the locking/unlocking lever is restricted by driving another motor other than the above-mentioned locking/unlocking motor and engaging the lock pawl so as to restrict the operation of the rack in the unlocking direction. This prevents unlocking operations due to theft.

[Problem to be solved by the invention]

The conventional device described above requires a motor for electrically locking/unlocking the door lock and another motor for restraining the unlocking operation of the lock/unlock lever in the event of theft.
There are problems in that there are many components, the configuration is complex, and the cost is high.

The present invention has been made in view of the above-mentioned problems of the prior art, and its purpose is to enable manual locking/unlocking and electric locking/unlocking with a simple configuration. Particularly, it is an object of the present invention to provide a locking/unlocking operation method for an automobile door lock and a device therefor, which can prevent the locking/unlocking lever of the door lock from being unlocked by theft.

[Means to solve the problem]

In order to achieve the above object, the method of the present invention is capable of moving an output lever from a neutral position in a locking direction and an unlocking direction via a speed reduction mechanism using a motor that can rotate in forward and reverse directions. In the locking/unlocking operation method of a car door lock, the locking/unlocking lever of a door lock is moved to a locked position and an unlocked position by an actuator that can be rotated to return to a neutral position. When the output lever is operated from the neutral position to the locking or unlocking direction by operation, and when the output lever is operated from the neutral position to the unlocked position by unlocking the external operation switch, After the lock lever is in the locked or unlocked state, the motor is reversely controlled to return the output lever to the neutral position, and when the output lever is operated in the locking direction by the locking operation of the outside operation switch. The present invention is characterized in that, after the lock/unlock lever is put into the locked state, the lock/unlock lever is stopped at a position where movement of the lock/unlock lever in the unlocking direction is prevented without returning to a neutral position.

In addition, the device of the present invention uses a motor that can rotate forward and backward.
Through the deceleration mechanism, the output lever can be moved from the neutral position in the locking and unlocking directions that move the locking and unlocking lever of the door lock to the locking and unlocking positions, and the output lever can be moved back to the neutral position. A movable actuator, locking and unlocking operations installed inside the car, LI
J's in-vehicle operation switch, the external operation switch for locking and unlocking provided outside the vehicle, the lock operation detection switch that detects when the door lock lock/unlock lever reaches the locked position, and the door lock lock. an unlocking operation detection switch that detects that the lever has reached the unlocked position; and a neutral detection switch that detects that the output lever has reached the neutral position;
is connected to the motor of the actuator and each of the switches, and when the in-vehicle operating switch is locked or unlocked, and when the external operating switch is unlocked, until the locking operation detection switch is activated, or By rotating the motor in the direction in which the output lever rotates in the locking direction or the unlocking direction until the unlocking operation detection switch is activated, the locking operation detection switch or the unlocking operation detection switch is activated, When the motor is reversed and the output lever is returned to the neutral position until the neutral detection switch is activated, and the external operation switch is locked, the motor is operated until the lock operation detection switch is activated. The output lever is rotated in the locking direction and the locking operation detection switch is activated, thereby stopping the operation of the motor and preventing the output lever from moving in the unlocking direction of the locking/unlocking lever. control the motor so that the output lever rotates in a direction in which the output lever returns to the neutral position by unlocking the external operation switch in the bracketed state. It is characterized by comprising a control device.

[For production]

By locking the in-vehicle operation switch installed inside the vehicle, the actuator motor rotates forward in a predetermined direction.
Accordingly, the output lever is rotated from the neutral position in the locking direction via the deceleration mechanism, and the rotation of the output lever moves the locking/unlocking lever to the locking position that disables the door opening operation. .

When the movement of the locking/unlocking lever to the locking position is completed, the motor is controlled in reverse by the activation of the locking operation detection switch.
The output lever is reversed and rotated from the locked position toward the neutral position, and then, when the neutral detection switch is activated, the rotation of the motor is stopped and the output lever is stopped at the neutral position.

Furthermore, when the in-vehicle operation switch is operated to unlock, the motor rotates in reverse, and the output lever is rotated from the neutral position in the unlocking direction via the deceleration mechanism, and the locking/unlocking lever is moved to the unlocking position in the same way as described above. After being moved, it returns to the neutral position, rotates, and stops.

Therefore, the output lever is in a neutral position where the operation of the locking/unlocking lever accompanying the manual operation is not transmitted and is in an idle state, so that the manual operation can be easily performed.

By locking the external operation switch installed outside the vehicle,
The motor rotates in the normal direction, and the output lever is accordingly rotated from the neutral position in the locking direction via the reducer slide, and the rotation of the output lever moves the locking/unlocking lever to the locking position. It will be done.

When the locking/unlocking lever reaches the locked position, the locking operation detection switch is activated, but at this time, the seventh data is stopped without being reversed, and the output lever is moved in the unlocking direction of the locking/unlocking lever. It remains stopped at the position that blocks 8@J.

However, in this state, the output lever prevents the lock/unlock lever from moving in the unlocking direction.
It becomes virtually impossible to move the lock/unlock lever in the unlocking direction due to theft. When the external operating switch is operated to unlock the lock/unlock lever in a restrained state where movement in the unlocking direction is prevented, the motor rotates in reverse, and the output lever is returned from the locked position to the neutral position.

In addition, after continuing to rotate the output lever in the unlocking direction and moving the locking/unlocking lever to the unlocking position, the unlocking operation detection switch is activated to rotate the motor forward and move the output lever to the neutral position. It may also be rotated back.

[Example] Hereinafter, an example of the present invention will be described based on the accompanying drawings.

(1) is the door lock body provided inside the door, and the engaging device 411 section houses a latch that engages and disengages with a striker (not shown) provided on the vehicle body side, a locking plate (both not shown), etc. (2) and the meshing n ellipse (2) is controlled W
It consists of an operating mechanism section (3) that houses a group of levers to be operated.

(4) is a lock/unlock lever that is one of a group of levers rotatably supported by the operating mechanism part (3), and one end of which is a lock/unlock lever for manual operation located on the inside of the door. Knob (5)
The actuating plate (4a) is integrally connected to the key lever (7) via the door lock (6), and the other end thereof is rotatably supported on the door lock body (1).
), and a driven portion (4b) extending downward is formed in the central portion.

The key lever (7) has a holder (7a) installed at its tip.
) and a rod (8) rotatably connected to the holder (7a), and is connected to a key cylinder (9) disposed on the outside of the door. Therefore, by manually operating the locking/unlocking knob (5) from inside the vehicle or manually operating the key cylinder (9) using the key plate from outside the vehicle, the locking/unlocking lever (4) is activated. Moving the release operation handle (ILL8 shown in the figure) provided inside and outside the vehicle to the locked position shown in Figure 4, which disables the door opening operation, and to the unlocked position shown in Figures 1 and 3, which similarly enables the door opening operation. I can do it.

(10) and (11) are a normally closed unlocking operation detection switch and a locking operation detection switch respectively fixed on the bracket (l2) extending from the operating mechanism part (3), and the locking/unlocking lever (4) When the lock is in the unlocked state shown in Figure 1, the actuating plate (4
Detect the position of a) and release the unlock operation detection switch (IO)
is OFF L and in the locked state shown in FIG. 4, the locking operation detection switch (11) is OFF L to detect each state.

(l3) is an actuator that moves the locking/unlocking lever (4) to the locking position and the unlocking position by driving a motor;
A motor (13a) fixed to the door lock body (1) near the lock/unlock lever (4) on the bracket (12) and inside the case (13) is capable of forward and reverse rotation (see Figure 5).
A known deceleration mechanism (13b) composed of a planetary gear or the like that decelerates the rotation of this motor (13a), and an output lever (14) fixed to the output shaft (13c) of the deceleration mechanism (13b). It is provided.

The relationship between the output lever (14) in the actuator (l3) and the driven part (4b) of the lock/unlock lever (4) is such that the output shaft (13c), which is the rotation center of the output lever/<-(14), is the lock/unlock lever. (4), and when the output lever (l4) is in the neutral position, the entire output lever (14) is located on the side of the movement locus of the driven part (4b) of the lock/unlock lever (4). The output lever (l4) is moved away from the locus of movement at an appropriate interval to the side and rotated from the neutral position in the locking or unlocking direction.
4) is in contact with one side edge or the other side edge of the driven portion (4b) to move the locking/unlocking lever (4) to the locking position or the unlocking position.

The output lever (l4) is moved from the neutral position shown in Fig. 1 to a key-operated switch (l7) that is linked to the operation of a remote-controlled switch (l6) and a key cylinder (9) provided inside and outside the vehicle interior.
As a result, the motor (13) can rotate in the clockwise locking direction and the counterclockwise unlocking direction in FIG. 1.

(15) is a normally closed neutral detection switch disposed at a position corresponding to the neutral position of the output lever (14).

When locking the remote control switch (16) inside the vehicle, the output lever (14) rotates from the neutral position clockwise in FIG. 1, and as shown in FIG.
The actuating part (14a) of l4) enters the operating locus of the driven part (4b) of the lock/unlock lever (4), and the driven part (4b)
The locking/unlocking lever (4) is moved to the locking position, and when this position is detected by the locking operation detection switch (1l), the motor (13a) is reversely controlled and returned to the neutral position. Rotating slide 6 and operating part (14a)
When the tip of the output lever (14) turns off the neutral detection switch (15), the output lever (14) stops at the neutral position.

Furthermore, during the unlocking operation, the output lever (14) rotates counterclockwise from the neutral position, and the actuating part (14a) enters the operating locus of the driven part (4b) as shown in Fig. 3. When the lever (4) comes into contact with the right side edge of the driven part (4b), the lock/unlock lever (4) is activated to the unlocked position, and this position is detected by the unlocking operation detection switch (10), so that the motor (
13a) is reversely controlled and rotated back to the neutral position. The tip of the actuating part (14a) is the neutral detection switch (1).
When 5) is actuated, the output rail A-(14) stops at the neutral position.

When the output lever (14) is in the neutral position, its operating part (14a) is the driven part (4a) of the lock/unlock lever (4).
The movement from the lock/unlock lever (4) side during manual operation interferes with the output lever (14) and is transmitted to the deceleration mechanism (13b) of the actuator (l3). It is designed so that it will never happen again. This allows easy manual operation.

When locking the key cylinder (9) outside the vehicle, the motor is driven by turning the key operation switch (l7) to the lock side, and the output lever rotates clockwise from the neutral position, as shown in Figure 4. The actuating part (14a) of (l4) enters the operating locus of the driven part (4b) of the lock/unlock lever (4),
It touches the left edge of the driven part (4b) and moves the locking/unlocking lever (4) to the locked position. In this case, the vehicle stops at this position without returning to the neutral position.

Therefore, in order to move the locking/unlocking lever (4) to the unlocking position by unlocking from the locking/unlocking knob (5) side, the driven part (4b) comes into contact with the output lever (14). The reducer 41 (13b) in the actuator (13) must be reversed. However, due to the deceleration effect, this operation is actually impossible.

In order to release the above-mentioned locking/unlocking lever (4) from being constrained in the unlocking direction, it is necessary to perform an unlocking operation on the key cylinder (9). By this operation, the key operation switch (17) is turned ONL to the unlocking side, and the motor (13a) is driven, so that the output lever (l4) rotates toward the neutral position, passes the neutral position, The lock/unlock lever (4) can be moved to the unlocked position.

FIG. 5 shows one embodiment of the control circuit.

One terminal of the motor (13a) is connected to a locking relay (1
The other terminal is connected to the switching contact (18a) of 8), and the other terminal is connected to the switching contact (19a) of the unlocking relay (19). The relays (18) (19) are connected to the collectors of the switching transistors (20) (21) and are connected to the collectors of the switching transistors (20) (21).
The bases of are connected to the output terminals of the OR gate circuits (22) and (23).

One input terminal of the OR gate circuit (22) is connected to the output terminal of the AND gate circuit (24), and the other input terminal is connected to one output terminal of the interlock circuit (25). When the ON signal is input to
By the logical sum, an ON signal is output from the output terminal,
The switching transistor (20) is made conductive, the relay (I8) is energized, and the motor (13a) is rotated in the forward direction.
The output lever (l4) can be rotated in the locking direction (clockwise).

One input terminal of the OR gate circuit (23) is connected to the output terminal of the AND gate circuit (26), and the other input terminal is connected to the output terminal of the AND gate circuit (27). When a signal is input, an ON signal is output from the output terminal based on the logical sum of the signals, making the switching transistor (21) conductive and turning on the relay (l).
9), the motor (13a) is reversed, and the output lever (l4) can be rotated in the unlocking direction (counterclockwise).

One input terminal of the AND gate circuit M (24) is connected to the output terminal of the OR gate circuit (z8), and the other input terminal is connected to the lock operation detection switch (11), which is connected to one input terminal of the OR gate circuit (28). The terminal is connected to a remote control switch (l
6), and the other input terminal is connected to the lock side contact (17a) of the key operation switch (17), so that the lock operation detection switch (1l) is turned ON (unlocked). ), press the remote control switch (l
6) or the key-operated switch (17) to the lock side contact (16a) (].7a), it is possible to manually input an ON signal to one input terminal of the OR gate circuit (22).

One input terminal of the AND gate circuit (26) is connected to the OR gate circuit (29), and the other manual terminal is connected to the unlocking operation detection switch (10).
One input terminal of is connected to the unlocking contact (16b) of the remote control switch (l6), and the other manual terminal is connected to the unlocking contact (17b) of the key operating switch (17). When the unlock operation detection switch ( ]O) is ON (locked state), either the remote control switch (I6) or the key operation switch (17) is pressed to the unlock side contact (16).
b) When turned on to the (17b) side, the OR gate circuit (2
3) The ON signal can be input manually to one of the input terminals.

One input terminal of the AND gate circuit (27) is connected to the input terminal of the flip-flop circuit (30), and the other input terminal is connected to the other output terminal of the interlock circuit (25).

Set input terminal (S
) is the lock side contact (17a) of the key operation switch (l7).
), the reset input terminal (R) is connected to the unlock side contact (17b
), and when an ON signal is input to the set input terminal (S), an ON signal is output.

One input terminal of the interlock circuit (25) is connected to the ant gate circuit (31), and the other input terminal is connected to the output terminal of the AND gate circuit (3z). The input terminal of is connected to the locking operation detection switch (11), and the other input terminal is connected to the neutral detection switch (15).

One input terminal of the AND gate circuit (32) is connected to the neutral detection switch (15), and the other input terminal is connected to the unlocking operation detection switch (10).

By locking the remote control switch (16), the output lever
When (14) is rotated in the locking direction, the output lever (l4) is turned to the locking/unlocking lever (
4) to the locked position, the tN lock operation detection switch (11) turns OFF and the neutral detection switch (
l5) and unlocking operation detection switch (lO) are both ON.
Therefore, an ON signal is output from the other output terminal of the interlock circuit (25).

At this time, the flip-flop circuit (30) turns ON.
Since the signal is being output, the logical product of the AND circuit (27) is obtained, the motor (13a) is reversed, and the output lever (
l4) can be rotated back to the neutral position. When the output lever reaches the neutral position, the neutral detection switch (l5)
When turned off, the motor (13a) stops rotating,
The output lever (14) stops at that position.

In addition, when the output lever (14) is operated in the unlocking direction by the unlocking operation and the 5 lock/unlock lever (4) is operated to the unlocked position as shown in Fig. 3, the unlocking operation is detected. switch(
10) is turned OFF, and both the neutral detection switch (15) and the locking operation detection switch (11) are turned ON, so that the O from one output terminal of the interlock circuit (25) is turned OFF.
An N signal is output. Thereby, the motor (13a) can be rotated in the normal direction, and the output lever (14) can be returned to the neutral position and rotated.

When the output lever (14) is rotated in the locking direction by turning on the lock side contact (17a) of the key operation switch (17) due to the locking operation of the key cylinder (9), the flip-flop circuit ( 30) is held in the set state and no ON signal is output from its output terminal, making it impossible to obtain the logical product of the AND circuit (27), and the output lever (l4) returns to the neutral position and rotates. It remains stopped at the position shown in Fig. 4 without any movement.

As a result, movement of the lock/unlock lever (4) in the unlocking direction is restricted.

To release this locked state, press the key cylinder (9
), the unlocking contact (17b) of the key-operated switch (l7) must be turned ON and the flip-flop circuit (30) must be reset.

When the flip-flop circuit (30) is reset,
Obtaining the logical product of the ant circuit (27), the motor (13a)
is reversed, the output lever (14) is rotated back to the neutral position, and the driven portion (4b) of the locking/unlocking lever (4) is moved out of the operating trajectory.

〔Effect of the invention〕

According to the method and device of the present invention, the door lock can be locked and unlocked by moving the output lever of the actuator using the in-vehicle operation switch, and the manual operation can be performed easily. By moving the output lever of the actuator, Kawaichi's motor can be used to create a restraining state in which the door can be locked and the locking/unlocking lever can be restrained from moving in the unlocking direction to prevent unlocking by theft. Therefore, the number of parts can be reduced more than ever before, and costs can be reduced.

[Brief explanation of drawings]

The drawings show an embodiment of the device of the present invention, in which Fig. 1 is a front view of the door lock body in the unlocked state, Fig. 2 is a perspective view thereof, and Fig. 3 is a main view showing the unlocked state. FIG. 4 is a front view of the main part showing the locking operation state, and FIG. 5 is a control circuit diagram. (1) Door lock body (4) Lock/unlock lever (4)
a) Driven part (9) Key cylinder (10
) Unlocking operation detection switch (l1) Locking operation detection switch (l3) Actuator (13a) Motor (14) Output lever (14a) Actuation part (l
5) Neutral detection switch (16) Remote control switch (in-vehicle control switch) (1
7) Key operation switch (operation switch for outside the vehicle) section rO Shake section reduction

Claims (2)

[Claims] (1) A motor that can rotate forward and reverse allows the output lever to be moved from the neutral position in the locking and unlocking directions via the speed reduction mechanism, and the output lever can then be rotated back to the neutral position. In a method for locking and unlocking a door lock for a vehicle, the locking and unlocking lever of a door lock is moved to a locked position and an unlocked position using an actuator that is configured to move the output lever to a neutral position by locking and unlocking an in-vehicle operation switch. When the output lever is operated from the neutral position to the unlocked position by the unlocking operation of the external operation switch, the locking/unlocking lever is locked or unlocked. After the state is set, the motor is reverse controlled to return the output lever to the neutral position, and when the output lever is operated in the locking direction by the locking operation of the external operation switch, the locking/unlocking lever is A method for locking/unlocking a door lock for an automobile, characterized in that after the door lock is in a locked state, the door lock is stopped at a position that prevents movement of the lock/unlock lever in the unlocking direction without returning to a neutral position. (2) A motor capable of forward and reverse rotation moves the output lever from the neutral position to the locking and unlocking directions to move the locking and unlocking lever of the door lock to the locking and unlocking positions via the speed reduction mechanism. an actuator that can be rotated back to the neutral position, an in-vehicle operation switch provided inside the vehicle for locking and unlocking operations, and an external operation switch provided outside the vehicle for locking and unlocking operations; , a lock operation detection switch that detects when the door lock lock lever has reached the locked position, an unlock operation detection switch that detects that the door lock lock lever has reached the unlock position, and an output lever that is in the neutral position. a neutral detection switch that detects when the position has been reached; and a neutral detection switch that is connected to the motor of the actuator and each of the switches, and when the inside operation switch is locked or unlocked and when the outside operation switch is unlocked. The locking operation is detected by rotating the motor in the direction in which the output lever rotates in the locking direction or the unlocking direction until the locking operation detection switch is activated or until the unlocking operation detection switch is activated. When the switch or the unlocking operation detection switch is activated, the motor is reversed until the neutral detection switch is activated, the output lever is returned to the neutral position, and the external operation switch is operated to lock. The motor is rotated in the direction in which the output lever rotates in the locking direction until the locking operation detection switch is activated, and when the locking operation detection switch is activated, the operation of the motor is stopped and the output lever is rotated. , by stopping the lock/unlock lever at a position that prevents it from moving in the unlocking direction, and in this state, by unlocking the external operation switch, the motor is rotated so that the output lever returns toward the neutral position. 1. A locking/unlocking operation device for a door lock for an automobile, comprising: a control device for controlling the motor so as to rotate the motor in a direction in which the motor is rotated.