JPH08240050A - Door lock device - Google Patents

Abstract

PURPOSE: To prevent the occurrence of the failure of a locking operation by eliminating the malfunction of a latch, even when a door is quickly opened and the supply of power is interrupted during the operation of a motor to move the latch, and reduce cost or eliminate a trouble for changing a lever by eliminating a lever for use at the time of a failure, and a trim cover. CONSTITUTION: A closing lever 8 for driving a latch 3 is divided into the first lever 81 and the second lever 82 laid coaxially, and the second lever 82 can be engaged with and disengaged from the first lever 81. In addition, a release lever 6 is provided to push up the second lever 82 until the disengagement thereof from the first lever 81 on the operation of a door handle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock device used for a sliding door for an automobile, and more particularly to a device for automatically operating from a half lock state to a full lock state.

[0002]

2. Description of the Related Art When closing a sliding door for an automobile,
The reaction force of the weather strip that seals the door and the opening of the vehicle body and the reaction force of the air trapped in the vehicle compartment act. Therefore, if the closing force is small, the door lock device may not be completely locked and may be in a half-locked state, so that the door must be closed with a large closing force.

Therefore, there is known a device in which when a person closes to a half-locked state, it is automatically operated thereafter until a full-locked state is reached so that a large closing operation force is not required (for example, Japanese Patent Laid-Open No. Hei 10 (1999) -264242). No. 2-70876).

The structure of this conventional door lock device will be briefly described. This device is configured so that the door can be locked by engaging the latch and the striker, and the half-locked latch is set to the full-locked state. A driving member that pushes until it reaches a certain position and a motor that gives a driving force to the driving member are provided, and the driving force of the motor is transmitted to the driving member via a gear, a rotating lever, and a wire. .

The half-lock state is detected by a half-lock detection switch that detects the position of the pole that rotates when engaging with the latch, and the full-lock state is
The full lock detection switch for detecting the position of the driving member that applies the driving force to the latch is used for the detection.

Further, in the conventional apparatus, a handle switch for detecting the opening operation of the door handle is provided, and the opening operation of the door handle is performed while the motor is being driven so as to change from the half lock state to the full lock state. When the action is detected, the motor is rotated in the reverse direction to return the drive member to the neutral position and the latch is moved in the opening direction.
Even when the motor is driving in the lock direction, the door can be opened by operating the door handle to release the lock.

The electric power is supplied to the motor and a circuit for controlling the driving of the motor by connecting a connector provided between the vehicle body and the door when the door is closed and supplying electric power from a battery provided in the vehicle body. Is configured. Therefore, when the door is open, the connector is not connected and the motor cannot be driven.

[0008]

However, in such a conventional device, when the door is closed to the half-locked state and the door is opened while the motor is driving in the lock direction, If the opening operation speed is high, the connection between the door and the vehicle body is disconnected before the motor returns the drive member to the neutral position, the motor stops, and the drive member stops halfway. Sometimes. In this case, the latch is caught with the driving member, or the positional relationship between the driving member and the latch is switched,
After that, even if the sliding door is tried to be opened or closed, there arises a problem that the latch does not move or the driving member interferes with the movement of the latch in the full lock direction and the lock is not established even if the door is closed.

Further, when such a problem occurs, conventionally, a cover provided on a trim which is a lining of a door is opened, and a cable for transmitting a driving force from a motor to a driving member and a driving force of the motor are used. By bending the lever for failure provided between the drive gear and the gear to break the relationship between them, the drive member is moved to a position that does not interfere with the operation of the latch, and locking is enabled. However, if this failure lever is bent, it is necessary to replace this lever, and there is the problem that automatic locking cannot be performed until this replacement,
There is a problem that the cost is increased because the lever for failure is set and the trim has a structure that can be opened and closed.

The present invention has been made in view of the above-mentioned problems. Even when the door is quickly opened to stop the power supply while the motor is driving to move the latch, the above-mentioned problem is solved. It is possible to prevent the malfunction of the latch like this from occurring and prevent the lock operation from becoming impossible, and
It is possible to abolish the lever and trim cover for failure,
The purpose is to reduce the cost and save the trouble of replacing the lever.

[0011]

In order to achieve the above object, in the present invention, a latch engageable with a striker fixed to a vehicle body is rotatably mounted inside a sliding door, and the latch is attached to the latch. Is connected to an opening operation transmission mechanism that transmits the opening operation of the door handle to the latch to release the engagement between the latch and the striker, and at a position near the latch,
An actuator is provided with an input portion for inputting a driving force of the actuator and a latch engagement portion engageable with the latch, and the latch engagement portion is rotated by the actuator and engages with the latch in a half-locked state to latch. Is provided with a drive member for rotating the actuator to a full lock position, and a drive control circuit for controlling the drive of the actuator is provided, and this drive control circuit is connected to a power source on the vehicle body side when the slide door is closed and activated. Further, when the half-lock detecting means detects the half-locked state, the drive member drives the actuator in the direction to rotate the latch to the full-lock position, and when the full-lock detecting means detects the full-locked state, the drive member becomes the latch. A door lock device configured to drive the actuator in reverse until it returns to the disengaged neutral position. In the drive member, the first lever provided with the latch engagement portion and the second lever provided with the input portion can be coaxially rotated about a rotation shaft in a state of being vertically stacked. It is configured to be pivotally supported, and between both levers,
A lever engaging portion that engages both in a rotating direction is provided,
The first lever is rotationally biased by the first biasing means in the neutral position direction, and the second lever is rotated with respect to the rotational axis until the lever engaging portion is disengaged from the first lever. Is movably supported in a direction away from the first lever, and is urged by a second urging means in a direction in which the first lever is brought into contact with or close to the first lever. An engagement release lever is provided which moves the second lever until the engagement between the lever engagement portion and the first lever is disengaged against the urging force of the second urging means by the force.

[0012]

The operation when the slide door is closed and the door is suddenly opened while the actuator is being driven will be described.

When the sliding door is closed, first, the drive control circuit is connected to the power source on the vehicle body side and activated, and thereafter, when it is detected that the engagement between the latch and the striker is in the half lock state, the drive control is performed. The circuit drives the actuator. This driving force is input to the second lever of the driving member to rotate, and the first lever engaged with the lever engaging portion of the second lever in the rotational direction is also coaxially rotated in synchronization therewith. Move. Then, the latch engagement portion of the first lever engages with the latch in the half-locked state, and rotates the latch in the direction in which the latch is in the fully-locked state.

When an opening operation of the door handle is performed during this driving, the opening operation is transmitted to the latch via the opening operation transmission mechanism. At this time, the opening operation is provided in the opening operation transmission mechanism. The engagement release lever operates to move the second lever of the drive member against the urging force of the second urging means until the engagement between the lever engaging portion and the first lever is released.

In this way, when the second lever and the first lever are disengaged from each other, the driving force of the actuator is not input to the first lever, and the first lever is urged by the urging force of the first urging means. It is rotated to the neutral position.

Therefore, the latch toward the unlocked position does not get caught on the first lever or the positions of both are interchanged, and the latch can engage or disengage the striker.

Further, when the opening operation of the door handle started during the driving of the above-mentioned actuator is completed, the releasing operation of the engagement releasing lever is released and the second lever moves to the second
The urging force of the urging means moves toward the first lever, but at this time, the positions of both levers are displaced in the rotational direction from the time when both levers were engaged, and at this time, both levers are moved. Does not return to the engaged state.

After that, when the sliding door is closed and the latch is in the half-locked state, the drive control circuit drives the actuator. In this state, only the second lever is rotated and the second lever is in the full-locked state. After the rotation, the drive control circuit drives the actuator in the reverse direction. When the second lever is rotated to the position corresponding to the first lever in the neutral position by this reverse drive, the lever engaging portion of the second lever engages with the first lever.
Therefore, after this, the driving force of the actuator is
It is transmitted to the lever, and normal operation is performed.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. First, the configuration of the first embodiment will be described. FIG. 2 is a side view showing a cab-over type automobile having a sliding door (hereinafter referred to as a door) D to which the door lock device R of the embodiment of the present invention is applied. The door lock device R is provided so that it can slide freely.
Is configured so that the rear end of the door D and the vehicle body B can be engaged with each other and the engagement can be released.

The door lock device R is connected to a door handle H outside the vehicle and inside the vehicle (door handle inside the vehicle is not shown) H and a lock knob N via a remote control mechanism (open operation transmission mechanism) C. The remote control mechanism C
Is for transmitting or blocking transmission of the opening operation of each door handle H and the locking operation of the lock knob N to the door lock device R, for example, as shown in the specification of Japanese Utility Model Application No. 61-29887. Since this is a well-known structure and is not a main part of the present invention, detailed description thereof will be omitted.

The door lock device R is provided with an engaging mechanism for restricting an opening operation of the door D by engaging a member on the door D side with a member on the vehicle body B side. FIG. 3 is an exploded perspective view showing the engagement mechanism. The engagement mechanism is rotated by a striker 1 fixed to a vehicle body B and a base plate 2 (see FIG. 1) fixed inside the door D. It is composed of a freely supported latch 3 and a pawl 4 capable of restricting rotation of the latch 3 in the disengagement direction.

The latch 3 has an engagement groove 3a formed so as to be engageable with the striker 1, and a first engagement projection 3b and a second engagement protrusion 3b formed at an opening end of the engagement groove 3a. A protrusion 3c and an engagement lever 3d, which is provided on the opposite side to the side where the engagement groove 3a is formed, are formed.
When the latch 3 is rotated to one side (counterclockwise direction in FIGS. 1 and 3), the engagement protrusions 3b and 3c pass over without engaging with the pole 4 and rotate in the opposite direction. When it is made, it is formed in a shape that engages with the pole 4.

Next, FIG. 4 (a) (b) (c) (d)
Striker 1, latch 3 and pole 4 when door D is closed
And (a) is a diagram showing a positional relationship between an open lever 5 and a half lock switch 7, which will be described later. (A) is an unlocked state, (b) is a half locked state, and (c) is a transition state from half locked to full locked. , (D) show the full lock state.

In the unlocked state (a), the latch 3 points the opening of the engagement groove 3a in a direction in which the striker 1 can move forward and backward (downward in the figure), and when the door D is opened, it is not shown in the figure. This state is brought about by the biasing force of the spring.

Next, when the door D is closed from this state, first, the striker 1 enters the engaging groove 3a and is pushed by the striker 1 to rotate the latch 3 counterclockwise,
As shown in (b), the first engagement protrusion 3b goes over the pole 4 and engages in the clockwise direction. In this state, the first
Although the engaging projection 3b and the pole 4 are engaged with each other to prevent the latch 3 from rotating in the unlocking direction (clockwise), the opening of the engaging groove 3a is the direction in which the striker 1 moves forward and backward (right in the figure). Direction), it is not completely locked and this is called a half-locked state.

When the door D is further closed from this state,
The latch 3 is further pushed by the striker 1 as shown in (c), and the second engaging protrusion 3c of the latch 3 is shown as (d).
Rides over the pole 4 and engages with the pole 4 in the clockwise direction. In this state, the rotation of the latch 3 in the unlocking direction is restricted, and the opening of the engagement groove 3a is oriented in a direction substantially orthogonal to the advance / retreat direction of the striker 1,
The engagement between the engagement groove 3a and the striker 1 is not disengaged, and this is called a full lock state.

As shown in FIG. 3, an open lever 5 is provided on the pole 4 so as to rotate synchronously.
The open lever 5 is provided with a detection protrusion 5a. The detection projection 5a is a lock rotation which is a rotation generated in the pole 4 as the engagement projections 3b and 3c pass over the pole 4 when the latch 3 rotates to the half lock position and the full lock position. When the open lever 5 is rotated in synchronism with the movement, the half lock switch 7 (lock rotation detection means) arranged in proximity to the open lever 5 is provided in a positional relationship as shown in FIG. ing.

Returning to FIG. 1, the base plate 2 is provided with a close lever 8 as a drive member for pushing the engaging lever 3d of the latch 3 to rotate the latch 3 from the half lock position to the full lock position. It is provided in. That is, the closing lever 8 is the first lever 8
1 and a second lever 82, and both levers 81, 82
Are rotatably supported by the same pin 8a.

The first lever 81 has a latch engaging portion 81 which engages with the engaging lever 3d of the latch 3 as shown in the drawing.
It is provided with a and is urged to rotate by a first spring (first urging means) 8b in the direction of the neutral position (counterclockwise direction) shown.

The second lever 82 has a tip end to which one end of the close rod 10 driven by the motor 12 is connected, and an intermediate portion which engages with a side surface of the first lever 81 in a counterclockwise direction. A joint piece 82a is formed.
And, this second lever 82, with respect to the pin 8a,
The lever engagement piece 82a is movably supported in the axial direction (upward) until the engagement between the lever engagement piece 82a and the first lever 81 is released, and the engagement direction (downward) is lowered by the second spring (second urging means) 8c. ).

Incidentally, FIG. 5 shows an exploded perspective view of the close lever 8.

As shown in FIG. 1, the other end of the closing rod 10 is connected to the upper end of a reduction gear lever 9. The reduction gear lever 9 has an intermediate portion rotatably attached to the base plate 2 and a lower end. A gear 9a to which a driving force from a motor 12 attached to the base plate 2 is input is formed in the. Further, on the side portion of the reduction gear lever 9, rotation of the reduction gear lever 9 in the direction of the arrow A in the drawing is performed when the close lever 8 is at the full stroke position (position where the latch 3 is in the fully locked state). A full lock stopper 31 for restricting the rotation is provided, and conversely, a neutral stopper 32 for restricting the rotation of the reduction gear lever 9 in the direction opposite to the arrow A direction in the figure when the closing lever 8 reaches the neutral position is provided. .

Next, reference numeral 6 in the drawing denotes a release lever (engagement release lever), which is rotatably supported around a pin 6a and has its lower end connected to the remote control mechanism C by a rod 21. An engaging piece 6b engageable with the open lever 5 is provided in the middle part, and when the door handle H is opened, the release lever 6 rotates the open lever 5 clockwise in FIG. 1 or FIG. As a result, the pawl 4 is synchronously rotated and disengaged from the latch 3.

Furthermore, as shown in FIG. 3, an engagement releasing piece 15 is connected to the upper end of the release lever 6 so as to be relatively rotatable. The disengagement piece 15 is arranged so as to be able to move in and out from the elongated hole 2a opened at a position below the second lever 82 in the base plate 2, and the release lever 6 is rotated as the door handle H is opened. When moved, it is configured to project upward from the elongated hole 2a and push up the second lever 82 to a position where the engagement with the first lever 81 is released.

Next, the drive control circuit (drive control means) 40 for controlling the drive of the motor 12 will be described with reference to FIG.

The drive control circuit 40 is provided inside the door D, and when the door D is closed, the door D and the vehicle body B are closed.
A vehicle-mounted battery E can be connected via a door connector 50 provided between The drive control circuit 40 includes the half lock switch 7 and
A motor lock detection circuit 44 for detecting that the drive of the motor 12 is restricted by stopping the generation of a ripple signal generated by the drive of the motor 12 or by generating an overcurrent due to an increase in load, and the remote control mechanism C. Is connected to the input side with a handle switch 41 that is provided inside and is turned on when an opening operation is performed by the door handle H, while the motor 12 is connected to the output side.

Next, the control flow of the drive control circuit 40 will be described with reference to the flowchart of FIG.

In step S1, it is determined whether or not the first half-lock switch 7 has been turned ON. If YES, that is, the first ON, the process proceeds to step S2, and if NO, step S1 is repeated. In step S2, the motor 12 is normally rotated. In step S3, it is determined whether or not the second half-lock switch 7 has been turned on. If YES, that is, the second ON, the process proceeds to step S4, and if NO, the process proceeds to step S7. In step S4, the motor 12 is rotated in the reverse direction. In step S5, the motor lock detection circuit 44
In step S6, it is determined whether the motor lock is detected (the ripple signal is stopped or the overcurrent is detected).
Then, step S5 is repeated. In step S6, the driving of the motor 12 is stopped. In step S7, it is determined whether or not the handle switch 41 is turned on, that is, whether or not the opening operation of the door handle H is performed, and if YES, that is, the handle switch 41 is turned on, step S7 is performed.
4 and proceeds to step S8 if NO. Step S8
Determines whether or not the motor lock detection circuit 44 has performed motor lock detection (stop of the ripple signal or detection of overcurrent), and if YES, the process proceeds to step S4, and N
When O, the process returns to step S3.

Next, regarding the operation of the embodiment when the door is closed,
This will be described with reference to the time chart of FIG. When the auto-lock type door D to which the device of the present embodiment is applied is closed, a person slides the door D up to the half-lock position, and thereafter, the device R of the embodiment closes the door. , In short, people are allowed to slide only within the range that can be lightly operated.

When the door D is closed by this method, first, the door connector 50 is connected to activate the drive control circuit 40, and immediately after that, the latch 3 is in the half-locked state shown in FIG. 4 (b). To the first engaging protrusion 3
In synchronization with the movement of the pole 4 when b passes over, the open lever 5 opens the half lock switch 1
The second charging is performed (t1). Therefore, the flow of the steps S1 → S2 in the flowchart becomes the motor 12
Drives forward. It should be noted that a startup time T1 of 500 msec or less is required from when the half lock switch 7 is turned on (t1) to when the signal for driving the motor 12 is output.

The forward rotation of the motor 12 causes the reduction gear lever 9 to rotate in the counterclockwise direction, which is the direction indicated by the arrow in FIG. 1, and the second lever 82 of the close lever 8 to rotate in association therewith. , The first lever 81 engaged with the second lever 82 rotates counterclockwise against the urging force of the first spring 8b, and the latch 3 is engaged with the latch engaging portion 81a. Rotate in the full lock direction.

After that, when the latch 3 is rotated to the position shown in FIG. 4 (d) to be in the full lock state, at this time, FIG.
As shown in (c), the half-lock switch 7, which is once in the OFF state, is closed a second time by swinging the open lever 5 in synchronism with the rotation of the pole 4 due to the second engagement projection 3c getting over. (T2). Therefore, the flow goes from step S3 to S4 in the flowchart, and the reverse rotation drive of the motor 12 is started (t3).

As a result, the reduction gear lever 9 and the second lever 82 rotate in the clockwise direction, which is the reverse of the above, and accordingly the first lever 81 returns from the full stroke position to the neutral position. When the rotation of the reduction gear lever 9 is regulated by the neutral stopper 32, the rotation of the motor 12 is also regulated, and when the state is kept for a predetermined lock detection time T _{L, the} motor lock detection circuit 44 is activated.
Is detected and the reverse rotation drive of the motor 12 is stopped (steps S5 → S6). In this state, the latch 3 is engaged with the pawl 4 and maintained in the full lock state, and then the latch 3 and the striker 1 are operated until the door handle H is opened.
The disengagement with is reliably prevented.

Next, when closing the door D, the motor 1
When the door D is opened while 2 is being driven in the normal direction (between t1 and t3 in FIG. 8), the opening operation of the door handle H is transmitted to the release lever 6 via the rod 21.
Engagement release piece 15 provided on the upper end of the release lever 6
Causes the second lever 82 to be pushed up by protruding upward from the elongated hole 2a as the release lever 6 rotates. This allows
The lever engaging piece 82a of the second lever 82 and the first lever 81
Is disengaged from the first lever 81, and the first lever 81
It is rotated to the neutral position by the urging force of.

When the release lever 6 rotates as described above, the engaging piece 6b rotates the open lever 5. Therefore, the pawl 4 provided coaxially with the open lever 5 rotates the latch 3 to bring the latch 3 into an unlocked state. At this time, the first lever 81 engaging with the latch 3 as described above is in the neutral position. Therefore, the latch 3 is rotated to the unlocked position without being caught by the first lever 81 and the positions thereof are not changed.

Further, when the door handle H is opened, the drive control circuit 40 causes the handle switch 41 to be opened.
When a signal indicating that the motor is turned on is received, the flow of steps S3 → S7 → Step S4 is immediately followed by the motor 12 immediately.
Reverse. Therefore, the second lever 82 rotates clockwise in FIG. When the rotation of the reduction gear lever 9 is regulated by the neutral stopper 32 and the state is kept for a predetermined lock detection time T _{L, the} motor lock detection circuit 44 detects it and the reverse rotation circuit 4
The output of No. 3 is stopped and the reverse rotation drive of the motor 12 is stopped (steps S5 → S6). In this way, the motor 12
When the opening operation of the door handle H is finished after the reverse rotation of the second lever 8 is stopped, the second lever 82 pushed up by the engagement releasing piece 15 is pushed down by the urging force of the second spring 8c, and the first position at the neutral position is reached. Engage with lever 81.

By the way, the above-mentioned operation is a case where the most desirable operation is performed when the door D is opened while the motor 12 is being driven to rotate normally, but the opening operation of the door D is performed extremely quickly. In this case, the connector 50 may be disconnected before the reverse rotation of the motor 12 is completed, and the motor 12 may be stopped at that time.

In this case, the second lever 82 is stopped midway, but the first lever 81 is disengaged from the second lever 82, and the relationship with the motor 12 side is broken. It does not hinder the rotation of the to the unlocked position.

In this case, when the opening operation of the door handle H is completed after the reverse driving of the motor 12 is stopped,
The second lever 82 moves downward by the urging force of the second spring 8c, but at this time, the lever engaging piece 82 of the second lever 82.
a is brought into contact with the upper surface of the first lever 81, and at this time,
The two are not engaged. Then, close the door H and latch 3.
Is in a half-locked state, the motor 12 is driven to rotate in the normal direction, whereby the second lever 82 rotates on the upper surface of the first lever 81 in an idle state. Therefore, at this time, the latch 3 is maintained in the half-locked state. After that, when the operation of the reduction gear lever 9 is restricted by the full lock stopper 31, the motor 12 is driven in the reverse direction, and the second lever 82 moves to the first position.
Although it swings in the opposite direction in the idle state on the upper surface of the lever 81,
When the motor 12 is driven in the reverse direction until the operation of the reduction gear lever 9 is restricted by the neutral stopper 32, the lever engaging piece 82a of the second lever 82 falls into the side surface of the first lever 81, and both are in the engaged state. Becomes

Therefore, thereafter, the close lever 8 can be operated normally.

As described above, in the present embodiment, the operation of opening the door H rapidly is performed while the motor 12 is performing the normal rotation drive for changing the latch 3 from the half lock state to the full lock state. Even if the connector 50 is disconnected and the power supply is stopped before the reverse driving of the motor 12 is completed, the latch 3 is immediately engaged when the opening operation of the door handle H is performed. The first lever 81 is the motor 1
Since the relationship with the second side is broken and the neutral position is restored, the latch 3 is not caught and the latch 3 does not malfunction, and the door H cannot be opened and closed.

At this time, even if the second lever 82 and the first lever 81 are disengaged from each other, when the door H is next closed, the engagement between them is restored, and thereafter the normal operation is performed. It will be possible. For this reason, the engagement release lever for breaking the relationship between the motor 12 and the close lever 8 and the trim cover for performing the work for breaking the relationship, which are conventionally required, can be eliminated, and the cost can be reduced. In addition to the effect of being able to do so, the effect of being able to abolish such troublesome work is obtained.

Further, in the embodiment, the half lock state and the full lock state are detected only by the half lock switch 7, so that the number of switches can be reduced as compared with the conventional one.
As a result, the cost of the reduced switches can be reduced, and the harness connected to the reduced switches can be omitted, and the cost can be reduced accordingly.

By the way, in the present embodiment, when the full lock switch is omitted, the motor lock detection circuit 44 for detecting the full lock state is set. The switch that is a part of
Compared to the fact that the cost for the parts is inevitably high, in the latter case, the circuit can be constructed by adding elements, printed wiring, etc. to the existing circuit, and it is possible to reduce the parts cost. , Usually 1/2 to 1 / compared to the former
It can be done at a cost of 4.

Further, in the present embodiment, the motor lock detection circuit 44 for detecting the full lock state is utilized,
By detecting that the close lever 8 has returned to the neutral position, the neutral switch, which has been necessary in the past, is not required, and the cost can be further reduced.

Although the embodiment of the present invention has been described above with reference to the drawings, the specific structure is not limited to this embodiment. For example, in the embodiment, the first lever 81 and the second lever 82 are provided. As an example of the means for engaging, the second lever 82 is provided with the lever engaging piece 82a, but the engaging piece may be formed on the first lever 81 instead of the engaging piece 82a.

Although the full lock state is detected by using the half lock switch 7 in the embodiment, a full lock switch may be provided separately from the half lock switch 7 as means for detecting the full lock state. Good.

[0058]

As described above, in the door lock device of the present invention, the driving force of the actuator and the first lever having the latch engaging portion is input to the drive member for rotating the latch. The lever is provided coaxially by being divided into a second lever having an input section, and a lever engaging section for engaging the two in a rotation direction is provided between the two levers, and the first lever is rotated in a neutral position direction. First biasing means for biasing is provided, and the second lever is supported so as to be movable in a direction away from the first lever with respect to the rotation shaft until the engagement of the lever with the first lever is released. On the other hand, the second urging means urges the first lever in a direction in which it abuts or approaches the first lever, and the opening operation force resists the urging force of the second urging means in the middle of the opening operation transmission mechanism. The second lever is disengaged from the lever engaging portion and the first lever. Since the engagement release lever for moving the door handle is provided, when the door handle is opened, the engagement release lever pushes up the second lever to release the engagement with the first lever and engage with the latch. The first lever is immediately returned to the neutral position by the urging force of the first urging means, and the returning operation is not restricted by the actuator. Therefore, the actuator
Even if the power supply is stopped by opening the slide door during the drive to change the latch from the half-locked state to the full-locked state, the latch may be caught with the driving member or the positional relationship between the two may be switched. Therefore, there is no effect that the latch does not operate. Furthermore, due to this effect, it is possible to eliminate the lever for failure and the cover of the trim for eliminating this when the latch does not operate, it is possible to reduce the cost and at the time of such failure. The effect of eliminating the trouble of exchanging the lever for use is obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a door lock device according to an embodiment of the present invention.

FIG. 2 is a side view showing a cab-over type automobile having a door to which the door lock device of the embodiment is applied.

FIG. 3 is an exploded perspective view showing an engagement mechanism of the door lock device according to the embodiment.

FIG. 4 is an explanatory view showing the operation of the embodiment apparatus,
(A) is unlocked, (b) is half-locked,
(c) is the state of transition from half lock to full lock,
(D) shows the full lock state.

FIG. 5 is an exploded perspective view showing a close lever of the embodiment apparatus.

FIG. 6 is a circuit diagram showing a drive control circuit of the embodiment apparatus.

FIG. 7 is a flowchart showing a control flow of the drive control circuit of the embodiment apparatus.

FIG. 8 is a time chart showing the operation of the apparatus of the embodiment.

[Explanation of symbols]

D door 1 striker 3 latch 6 release lever (engagement release lever) 8 close lever (driving member) 81 first lever 81a latch engagement part 82 second lever 82a lever engagement piece (lever engagement part) 8a first spring (First urging means) 8b Second spring (second urging means) 7 Half lock switch (half lock detection means, full lock detection means) 12 Motor (actuator) 15 Engagement release piece (engagement release lever) 40 Drive control circuit

Claims (1)

[Claims] 1. A latch engageable with a striker fixed to a vehicle body is rotatably attached to the inside of a slide door, and the latch and the striker are connected to the latch by transmitting an opening operation of a door handle to the latch. The opening operation transmission mechanism for releasing the engagement of is connected, in the vicinity of the latch, an input portion for inputting the driving force of the actuator, and a latch engagement portion engageable with the latch, A drive member is provided that is rotated by the actuator and the latch engagement portion engages with the latch in the half-lock state to rotate the latch to the full-lock position, and a drive control circuit that controls the drive of the actuator is provided. This drive control circuit is activated when the sliding door is closed and connected to the power supply on the vehicle body side, and when the half-lock detection means detects a half-locked state, it is driven. The member drives the actuator in the direction to rotate the latch to the full lock position, and thereafter, when the full lock detection means detects the full lock state, the actuator is reversely driven until the drive member returns to the neutral position where it does not engage with the latch. In the door lock device configured, the drive member is configured such that a first lever having the latch engagement portion and a second lever having the input portion are vertically overlapped with each other about a rotating shaft. A lever engaging portion that is coaxially rotatably supported and that engages both of them in a rotational direction is provided between both levers, and the first lever is configured to move in a direction of the neutral position. A direction in which the second lever is rotationally biased by the biasing means, and the second lever is separated from the first lever with respect to the rotational shaft until the engagement with the first lever by the lever engaging portion is released. While being movably supported, biased by the second biasing means in a direction to abut against or proximate to the first lever, in the middle of the opening operation transmitting mechanism, wherein the opening operation force the second
A door lock device comprising: an engagement releasing lever for moving the second lever until the engagement between the lever engaging portion and the first lever is disengaged against the urging force of the urging means.