JP2657876B2 - Automotive door lock control 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 door lock control device for a motor vehicle having a drive means capable of electrically releasing the engagement of a door lock by operating a door opening operation means.

[0002]

2. Description of the Related Art A conventional device as described above is provided with a door lock provided with a meshing mechanism comprising a striker and a latch which can be disengaged and a locking plate which can be disengaged from the latch, and connected to a locking plate of the door lock. Latch release actuator, door opening operation means for operating when the door is opened, locking and unlocking switch for operating when locking or unlocking the door, and operation of the locking and unlocking switch. Accordingly, the control unit includes a control unit that stores one of a locked state in which the operation of the door opening operation unit is disabled and an unlocked state in which the operation of the door opening operation unit is enabled. In this state, by operating the door opening operation means, the power of the battery is controlled to be supplied to the actuator, the actuator is released, and the door can be opened. To have. (For example, see
-148974)

[0003]

However, the above-described conventional apparatus is operated by operating the door opening operation means.
To release the engagement between the door lock engagement mechanism and the striker, power is supplied to the actuator while the door opening operation unit is operated to ensure that the release operation is performed. Or a means for supplying a power to the actuator for a predetermined time after the door opening operation means is operated, and holding the actuator in the release state for a predetermined time. Need to be taken. However, in any case, in order to maintain the engagement mechanism in the released state, power must be continuously supplied to the actuator. Therefore, if the released state is maintained for a long time, the actuator may be seized and a failure may occur. There is a risk of causing the cause. SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-described problems of the related art, and has as its object to provide a door lock control device for an automobile, in which a door lock release operation is surely performed and a failure of a driving unit is prevented. And

[0004]

In order to achieve the above object, an apparatus according to the present invention comprises a latch which can be disengaged from a striker and a locking plate which can be disengaged from the latch and moved to an engaged position and a disengaged position. And a door lock having a lock plate connected to the locking plate of the door lock.
A control device for a door lock for a vehicle, comprising: a driving unit for electrically releasing the engagement mechanism; and a neutral detection device capable of detecting a neutral position and an operating position corresponding to the engagement position and the release position of the locking plate in the driving unit. A switch and an operation detection switch are provided. When the neutral position detection switch detects the neutral position, the drive means is moved to the operation position by operating the door opening operation means, and the operation detection switch detects the operation position. The power supply to the driving means is stopped by stopping the power supply to the driving means and stopping the locking plate at the release position, and further, when the door is opened, the driving means is reversed and the neutral position detection switch detects the neutral position. A control unit for stopping supply is provided.

[0005]

When the door opening operation means operates, the driving means moves from the neutral position to the operation position, and the locking plate of the door lock moves to the release position. When the operation detection switch detects the operation position corresponding to the release position of the locking plate, the power supply to the driving means is controlled to be stopped, and the locking plate is held at the release position until the door is opened. When the door is opened in this state, the driving means returns to the neutral position from the operating position, and the locking plate moves from the releasing position to the engaging position accordingly. When the driving means moves to the neutral position, the neutral detection is performed. When the switch detects the neutral position, the power supply to the driving means is stopped.

[0006]

An embodiment of the present invention will be described below with reference to the accompanying drawings. (1) is fixed to the car door (A),
Door lock that can be disengaged from the striker (1b) fixed to the vehicle body side, (20) is a door lock by a motor that can rotate forward and reverse
The actuator (30) is a driving means for releasing the engagement between the (1) and the striker (1b). The actuator (30) is a closure connected to the door lock (1) to reduce the closing force of the door (A). When the door (A) enters the half-latched state, the door (A) is driven to forcibly move the door (A) to the full-latched state against the sealing reaction force.

The box-shaped body (1a) of the door lock (1)
As shown in FIG. 5, a latch (2) that can be disengaged from a striker (1b) fixed to the vehicle body side, and is disengaged from the latch (2) and moves to an engagement position and a disengagement position as shown in FIG. A possible locking plate (3) is provided, when the door (A) closes,
The door (A) is kept closed by engaging the striker (1b) relatively entering the body body (1a) into the engagement groove (2a) of the latch (2), and the door (A) is closed. At the time of the opening operation of (A), the striker (1b) is moved from the engagement groove (2a) of the latch (2).
The door (A) can be opened and closed by detaching the door.

The latch (2) is pivotally connected to the body (1a) by a latch shaft (4).
The striker (1b) barely engages the engaging groove (2a) with the open position shown in FIG. 6 in which the striker (1b) faces the approach direction of b) and waits for the relative approach of the striker (1b), and the locking plate (3). ) Is the half latch engaging part of the latch (2).
(2b), the striker (1b) is completely engaged to the depth of the engagement groove (2a), and the locking plate (3) is fully engaged with the full latch engagement portion (2c). ) To prevent rotation toward the open position,
(A) can be pivoted to a full latch position shown in FIG. 5 which holds the closed position.

Further, inside the body 1a, first and second closing levers 5 and 6 are pivotally mounted on the shaft 5a so as to be independently rotatable. The first closing lever (5) is connected to the latch (2) via a link (8).
(2d), which is interlocked with the latch (2), and the contact portion (6a) of the second closing lever (6) is pivotally attached to the side surface of the body (1a) by the shaft (7a). The third closing lever (7) shown in FIG. 11 is provided so as to be able to abut on a pushing portion (7b) formed at one end. The third closing lever (7) has a connecting portion (7c) formed at the other end connected to a closure (30) that can be driven by a motor (30b) via a wire (30a), and an arrow from an inoperative position. It can reciprocate between the operating position rotated in the indicated direction.

(9) is a half-latch detection switch fixed to the body (1a). The half-latch detection switch contacts the cam portion (5b) of the first closing lever (5), and the latch (2) moves to the half-latch position. It turns on when it is in the range with the full latch position,
A half-latch position of the latch (2) in the door lock (1) is detected, and when the door lock (1) shifts from the open position to the half-latch position, this is detected and a drive command is issued to the closure (30). To force the latch (1) to move to the full latch position. In addition, closure (30)
Is not directly related to the gist of the present invention, and thus a detailed description is omitted.

As shown in FIG. 3, the actuator (20) is a forward / reverse rotatable motor housed in a case (20a).
(21) and a rotation that is pivotally mounted in a case (20a) by a shaft (22) and that forms a reduction mechanism capable of normal and reverse rotation by meshing with a worm (21a) provided on the rotation shaft of the motor (21). The body (23) has a base end pivotally connected to the case (20a) by a shaft (24), and has a neutral position corresponding to the engaging position of the locking plate (3) and an operating position corresponding to the releasing position. An operation lever (25) movable between the rotation lever (23) and the case (2a), and a neutral detection switch (26) for detecting a neutral position of the operation lever (25); An operation detection switch (27) for detecting the operation position of (25).

The neutral detection switch (26) includes an operating lever (25)
When the is in the neutral position, the movable contact (28) fixed to the side of the operating lever (25) conducts to the ground contact plate (29) affixed to the case (20a) to turn on and operate. Detects the neutral position of the lever (26) and activates the operation detection switch (27)
When the operating lever (25) moves to the operating position shown in FIG. 4, the movable contact (28) conducts to the ground contact plate (29) to turn on and detect the operating position of the operating lever (25). I do.

An engaging groove (25a) is formed on the surface of the operating lever (25) facing the rotating body (23) so that a projection (23a) projecting from the rotating body (23) is engaged. When the rotating body (23) rotates forward (clockwise in FIG. 3) or reversely (counterclockwise in FIG. 3), the protruding portion (23a) engages with the engaging groove (25a) and operates. Move the lever (25) between the neutral position and the operating position. (25b) protrudes from the case (20a), and the operating lever (25)
The release lever moves integrally with the operation lever (25) and moves to the neutral position and the release position as in the case of the operation lever (25). When the operation lever moves to the operation position, the release lever contacts the projection (3b) of the locking plate (3). , The locking plate (3) is pushed to the release position shown by the imaginary line in FIG.
(3a) is released to disengage the latch (2) from the engagement,
Release the latch (2) from the striker (1b)
(A) The door can be opened.

(11) shown in FIGS. 8 and 9 is an outside handle provided on the outer panel (A1) of the door (A) and serving as a door opening operation means outside the vehicle.
a) is pivotally attached to a predetermined amount, and at its end (11b),
The detection lever of the outside switch (12) that detects that the outside handle (11) has been turned in the direction of the arrow.
(12a). (13) shown in FIG. 10 is a door (A)
An inside handle which is provided on the inside panel (A2) of the vehicle and serves as a door opening operation means on the inside of the vehicle. The inside handle is pivotally attached to the panel (A2) so as to be rotatable by a predetermined amount. It is connected to the inside switch (14) shown in FIG. 1 for detecting the operation of (13).

(15) Reference numeral 15 denotes a locking / unlocking operation switch (locking / unlocking operation means) provided inside the vehicle of the door (A). The locking / unlocking operation can be performed by a touch operation. When the lock switch (15a) of the operation switch (15) is turned on, the lock signal is transmitted to the main control unit (CPU) (4) shown in FIG.
0), and when the unlocking switch (15b) is turned on by an unlocking operation, an unlocking signal is sent to the main control unit (40).
Input to the input port of
A diode that emits an identification color according to each operation is incorporated.

When the locking switch (15a) of the locking / unlocking operation switch (15) is turned on, the main control section (40) shown in FIG. 1 stores the operation and stores the locked state. When the unlock switch (15b) is turned on, the lock state is reset and the lock / unlock storage circuit (41) for storing the unlock state is stored.
have. When the unlocking state is stored in the unlocking memory circuit (41), the outside handle (11) or the inside handle (13) is operated, and the outside switch (12) or the inside switch (14) is operated. By turning on, a high-level output signal is output from the output port of the main control unit (40) to turn on the load control unit (16), and power is supplied to the motor (21) of the actuator (20). motor
(21) is controlled to perform normal rotation so that the door (A) can be opened.

When power is supplied to the motor (21) of the actuator (20) to perform forward rotation control, the release lever (25b) moves from the neutral position to the operating position together with the operating lever (25), and the door lock ( The locking plate (1) is moved from the engaged position to the released position against the urging force of the spring (3c). When the operating lever (25) moves to the operating position together with the release lever (25b), the movable contact (28) moves the ground contact plate (2).
9) While sliding, it moves away from the neutral detection switch (26) and contacts the operation detection switch (27), the neutral detection switch (26) switches from on to off, and the operation detection switch (27) It switches from off to on and detects the operating position of the release lever (25b). Then, the power supply to the motor (21) of the actuator (20) is stopped, and in that state, the release lever (25b) is held in the operating position, whereby the locking play (3) is released from the latch (2). It is held at the release position where it was detached.

In conjunction with the opening operation of the door (A), the latch
When (2) separates from the striker (1b) and moves from the full latch position to the open position direction beyond the half latch position, the half latch detection switch (9) detects the open position and turns on, and the actuator ( Power is supplied to reverse the motor (21) of (20), and the release lever (25
b) and the operating lever (25) return from the operating position to the neutral position, and when the neutral detection switch (26) is turned on, the motor (21)
The power supply to the power supply is stopped, and the power supply stops at the neutral position.

When the locking / unlocking memory circuit (41) stores the locked state, the outside handle (11) or the inside handle (13) is operated, and the outside switch (12) or the inside switch ( 14) is turned on,
The power supply to the motor (21) of the actuator (20) is disabled, and the opening operation of the door (A) is invalidated. (17)
The battery mounted on the car, (18) is the main control unit
A voltage converter for supplying power of a predetermined voltage to (40).

Next, the operation of the above embodiment will be described with reference to a time chart shown in FIG. When the door (A) is closed, the latch (2) is in the full latch position shown in FIG. 5, the half-latch detection switch (9) is off, and the release lever (25b) is in the neutral position shown in FIG. In the position, the neutral detection switch (26) is on and the operation detection switch (27) is off. In this state, if the locking / unlocking memory circuit (41) stores the unlocked state, the outside switch (12) or the inside switch (14) is operated by operating the outside handle (11) or the inside handle (13). ) Is turned on, the power supply (17) in the forward direction is supplied to the motor (21) of the actuator (20) with a predetermined delay,
The release lever (25b) moves from the neutral position to the operating position shown in FIG. When the release lever (25b) moves to the operating position, the movable contact (28) separates from the neutral detection switch (26), the neutral detection switch (26) is turned off, and the operation detection switch (27) is turned on. It switches to the state and detects movement to the operating position. Further, when the release lever (25b) is moved to the operating position, the locking plate (3) is disengaged from the latch (2) from the engagement position and moves to the release position.

Release lever (25b) and locking plate
When (3) moves to the operation position and the release position, and the operation detection switch (27) detects the operation position of the release lever (25b), the power supply to the motor (21) of the actuator (20) is stopped. Release lever (25b) is stopped in the operating position, and the locking plate (3) is
Until (A) is opened, it is held at the release position via the release lever (25b). In this state, since power is not supplied to the motor (21), even if the door (A) is unusually long, the motor (21) will not be burned and damaged.

When the door (A) is opened in this state, the door (A)
The striker (1b) is latched (2)
When the latch (2) is disengaged from the engagement groove (2a) and the latch (2) moves toward the open position shown in FIG. 6, the half latch detection switch (9) detects the movement of the latch (2) to the open position. This time, the power supply (17) is controlled to reverse the rotation of the motor (21) of the actuator (20), and the release lever (2
5b) returns from the operating position to the neutral position. When the locking plate (3) moves from the release position toward the engagement position and the release lever (25b) moves to the neutral position, the movable contact (28) contacts the neutral detection switch (26),
When the neutral detection switch (26) detects the neutral position of the operating lever (25), power supply to the motor (21) of the actuator (20) is stopped, and the operating lever (25) and the release lever (25b) are neutralized. Stop in position.

[0023]

As described above, according to the present invention, when the driving means is operated to the operating position and the power supply to the driving means is stopped when the door is opened, the locking plate is removed. Since the door is held in the unlocked state, the door opening operation can be reliably performed, and even if the holding time of the unlocked state becomes abnormally long, it is possible to prevent damage due to burn-in of the driving means. Quality can be improved.

[Brief description of the drawings]

FIG. 1 is a control circuit diagram showing one embodiment of the present invention.

FIG. 2 is a time chart showing a relationship between a neutral detection switch, an operation detection switch, and a driving unit.

FIG. 3 is a front view of the driving unit with a cover removed.

FIG. 4 is a front view of a neutral detection switch and an operation detection switch.

FIG. 5 is a front view of the door lock in a fully latched state with a cover removed.

FIG. 6 is an operation explanatory view of a main part of the door lock in an open state.

FIG. 7 is an operation explanatory view of a main part of the door lock in a half latch state.

FIG. 8 is a schematic side view of the door as viewed from outside the vehicle.

9 is a sectional view taken along line CC in FIG.

FIG. 10 is a schematic side view of the door as viewed from inside the vehicle.

FIG. 11 is a schematic view of a door lock.

[Description of Signs] (1) Door lock (1b) Striker (2) Latch (3) Locking plate (9) Half latch detection switch (11) (13) Door opening operation means (15) Locking / unlocking operation switch (20 ) Actuator (drive means) (21) Motor (23) Rotating body (25) Operating lever (25b) Release lever (26) Neutral detection switch (27) Operation detection switch (28) Movable contact (29) Ground contact plate (30 ) Closure (40) Main control unit (41) Locking / unlocking memory circuit (A) Door

 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Fumio Kobayashi 1-14-7 Maruyama, Isogo-ku, Yokohama-shi Inside Oi Works Co., Ltd. (56) References JP-A-61-254768 (JP, A)

Claims (1)

(57) [Claims] 1. A door lock having an engagement mechanism comprising a latch which can be disengaged from a striker and a locking plate which can be disengaged from the latch and moved to an engagement position and a release position, and a door connected to the locking plate of the door lock, A control device for an automobile door lock, comprising: a drive unit for electrically releasing the engagement mechanism based on an output of a release signal by operation of the door opening operation unit. A neutral detection switch and an operation detection switch capable of detecting a neutral position and an operation position corresponding to the position are provided, and when the neutral position detection switch detects the neutral position, the drive means is operated by operating the door opening operation means. When the operation detection switch detects the operation position, the power supply to the driving means is stopped and the locking plate is A control unit for stopping the power supply to the driving means when the door is opened, and when the door is opened, the driving means is reversed and the neutral position detection switch detects the neutral position. Control system for automotive door locks.