JP2781304B2 - Door lock device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for locking a sliding door for a motor vehicle, and more particularly to an apparatus which automatically operates from a half-lock state to a full-lock state.

[0002]

2. Description of the Related Art When a sliding door for an automobile is closed, a reaction force of a weather strip sealing the door and an opening of a vehicle body and a reaction force of air trapped in a vehicle compartment act. For this reason,
If the closing force is small, the door lock device is in a half-locked state, so the door must be closed with a large closing force.

[0003] In order to reduce the closing force of the door,
There is known a device that automatically operates a door lock device to a full lock state when a half lock state is established (for example, see Japanese Utility Model Laid-Open No. 137067/1985).

[0004] The structure of this conventional door lock device will be briefly described. This device is configured so that a door can be locked by engaging a latch member with a striker. Further, when the striker and the latch member are engaged in the half lock state, a pushing member is provided to push the latch member to bring the striker and the latch member into the full lock state. And a control circuit for controlling the driving of the motor.

[0005]

However, in such an apparatus, when the door is to be opened immediately after the door is closed, the following problems occur.

In other words, when the motor is driven in response to the door being closed to be in the half-locked state and the door is to be opened immediately after the pushing member starts pushing the latch member, the door handle is opened. The latch member is pushed by a human force in the direction opposite to the pushing direction of the pushing member. At this time, due to the engagement state of the pushing member and the latch member and the play allowance of the two, the latch member gets over the pushing member by human force, and the positional relationship between the pushing member and the latch member is reversed. There is. In this way, the door opens when the positional relationship between the pushing member and the latch member is reversed, but when the door is to be closed later, the latch member hits the pushing member and it is difficult to close, or in the worst case it does not close. Or Further, even if the latch member does not climb over the pushing member when the door is to be opened, if the latch member is repeatedly pushed in the opposite direction to the pushing direction of the pushing member, the pushing member and the latch member The play allowance of the members is gradually increased, and it is easy to get over.

To solve such a problem, the present applicant has invented a door lock device described in Japanese Patent Application Laid-Open No. 2-77776. In this device, when the opening operation of the door handle is detected, the pushing member is driven to an initial position where the rotation of the latch member to the unlock side is not restricted. Therefore, when the door is to be opened immediately after the door is once closed as described above, the pushing member operates in the initial position direction, and it is possible to prevent the latch member from colliding with the pushing member.

However, in this prior art, since the above-described operation is performed by a motor, when the door is opened and the power supply from the vehicle body to the door is cut off, the driving of the motor is stopped and the pushing member is moved. In some cases, operation was stopped, leaving room for improvement.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problem, and has as its object to eliminate the obstacle to the subsequent opening and closing of the door due to the reversal of the positional relationship between the latch member and the pushing member.

[0010]

In order to achieve the above object, in the door lock device according to the first aspect of the present invention, the striker is fixed to the vehicle body, and the latch member is engaged with the striker in an unlocked state. From the unlocked position to be engaged with the striker in a half-locked state and to the full-locked position to be engaged with the striker in a full-locked state. A rotation restricting member that restricts the rotation from the lock position and the half lock position toward the unlock position is provided on the door so as to rotate to a position where the rotation of the latch member is not restricted when the door handle is opened. And
A pushing member for pushing the latch member is rotatably attached to the door from an initial position on the unlock position side of the half lock position of the latch member to a full stroke position where the latch member can be pushed to the full lock position. A driving means for driving the pushing member is provided on the door, and when it is detected that the striker and the latch member are in the half-lock state, the pushing member is moved from the initial position to the full stroke position. When the drive unit detects that the striker and the latch member are in the full lock state, the control unit that controls the drive unit to stop after driving the pushing member from the full stroke position to the initial position, A door lock device provided on a vehicle body or a door, wherein the pushing member is rotatably supported by the door; A latch abutting piece that is rotatably mounted and abuts on the latch member, between the main body and the latch abutting piece, the rotation of the latch abutting piece is allowed to the full stroke position side. with a stopper to regulate the to the initial position side is provided, a spring for biasing the latch contact piece to the stopper side is provided, the spray
The urging force of the ring is applied to the latch member and the latch contact member.
When the relative position of is reversed, the driving means
When rotated to the initial position, the latch contact member
Pivot away from the stopper against the urging force of the
Set to be strong enough to get over the latch member
It was configured to have.

[0011]

In the door lock device of the present invention, when the door lock device is in the half-lock state, the drive means is driven, and the drive means drives the push member to rotate from the initial position to the full stroke position. Hits the latch member and pushes the latch member toward the full lock position to rotate the latch member. When the latch member rotates to the full lock position and enters the full lock state, the drive of the driving means is switched to the drive for returning the push member from the full stroke position to the initial position, and is driven when the push member returns to the initial position. The drive of the means stops.

Therefore, immediately after the half-lock state, the latch contact piece of the pushing member pushes the latch member to the full lock position side. The latch member is pushed by the force in the direction opposite to the pushing direction of the pushing member. At this time, when the latch member gets over the latch contact piece and the positions of the latch contact piece and the latch member are reversed, and the door is opened,
Thereafter, when the opened door is closed, only the latch contact piece of the pushing member is pushed by the latch member to the full stroke position side against the urging force of the spring, and the latch contact piece is easily rotated. The positional relationship between the latch member and the latch abutting piece returns to the normal state after getting over the latch member.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a side view showing a cab-over type automobile having a door to which the door lock device according to the present invention is applied, wherein the door D is slidably provided on a side portion of a vehicle body B. The lock device R is provided between the rear end of the door D and the vehicle body B. The door lock device R is connected to a door handle H outside the vehicle and inside the vehicle (the door handle inside the vehicle is not shown) H and a lock knob N via a remote control mechanism C. The remote control mechanism C is for transmitting or preventing the operation of each door handle H and the lock knob N to the door lock device R. For example, as shown in the specification of Japanese Utility Model Application Laid-Open No. 62-141519. Since it is a well-known structure, the description is omitted.

The door lock device R is provided with an engagement mechanism for engaging the member on the door D side and the member on the vehicle body B side to regulate the opening of the door D. FIG. 3 is an exploded perspective view showing an engagement mechanism. The engagement mechanism is rotatable between a striker 1 fixed to the vehicle body B and a base plate 2 (see FIG. 1) fixed inside the door D. , And a pawl 4 as rotation restricting means for restricting the rotation of the latch member 3. The latch member 3 has an engagement groove 3a for engaging with the striker 1, two engagement protrusions 3b and 3c formed at an open end of the engagement groove 3a, and an engagement groove. An engagement lever 3d protruding from the side opposite to the side where the 3a is formed
Are formed.

FIGS. 4 (i), (ii) and (iii) show the relationship between the striker 1, the latch member 3 and the pawl 4 when the door D is closed, and FIG. 4 (i) shows the unlocked state. ,
(Ii) shows a half lock state, and (iii) shows a full lock state. That is, when the door D is closed, first,
As shown in (i), one engagement projection 3 of the latch member 3
b, the striker 1 hits, and the striker 1 pushes the engagement protrusion 3b. Initially, the latch member 3 and the pawl 4 are separated. When the latch member 3 is pushed by the striker 1, the latch member 3 rotates counterclockwise, and as shown in (ii), one engagement projection 3b engages with the pawl 4 to be in a half-lock state (hereinafter, referred to as a half-lock state). This position in the rotation stroke of the latch member is called a half lock position). When the door D is further closed from this state, the striker 1 engages the engagement protrusion 3b.
Is further pushed, and as shown by the solid line in (iii), the other engaging projection 3c of the latch member 3 gets over the pawl 4 and engages with the pawl 4 to be in a full lock state (hereinafter, the latch member 3). This position in the rotation stroke is referred to as a full lock position). In the full lock state, the release of the engagement between the latch member 3 and the striker 1 can be reliably prevented. The pawl 4 is provided with an open lever 5 so as to rotate synchronously.

FIG. 1 is a perspective view showing a door lock device R, wherein the open lever 5 is engaged with a release lever 6. The release lever 6 is connected to the remote control mechanism C by a rod 19 so that the operation of each door handle H can be transmitted. The release lever 6 is engaged with an engagement rod 6a protruding from the release lever 6 and an open lever. 5
Are engaged. The open lever 5 has a detection protrusion 5a protruding therefrom. The detection protrusion 5a is provided in a positional relationship such that the half lock switch 7 is turned on when the latch member 3 rotates to the half lock position. Have been.

The base plate 2 is provided with a closing lever 20 as a pushing member for pushing the engaging lever 3d of the latch member 3 to rotate the latch member 3 from the half lock position to the full lock position. It is provided in. That is, the closing lever 20 includes a main body 20a rotatably supported by the base plate 2,
The main body 20a comprises a latch contact piece 20b which is rotatably supported by the main body 20a.

The main body 20a is formed in a substantially rectangular shape, an intermediate portion is supported by the base plate 2, and one end is
The reduction gear lever 9 is connected to one end of the reduction gear lever 9 via a close rod 10, and is urged to rotate clockwise by a spring 21. The position of the main body 20a clockwise turned by the biasing force of the spring 21 is an initial position, and the position is indicated by a dotted line in FIG. The full-stroke position is the position pushed and rotated to the position, which position is shown by the solid line in FIG. Further, FIG.
The position of the close lever 20 indicated by a chain line is a position where the latch member 3 starts to be pushed, and at this time, the latch member 3 is at the half lock position.

The latch contact piece 20b has one end rotatably supported by the other end of the main body 20a, and the other end has a contact surface with which the latch member 3 contacts. , And is rotationally urged clockwise by a spring 22 . Also, the main body 20a has a stopper 20c is integrally formed, the stopper 20c is a rotation of the latch contact piece 20b, the counterclockwise direction, that forgiveness to the full stroke position, the spring 22 Is formed in a clockwise direction that is urged to rotate, i.e., in a position to regulate toward the initial position. Therefore, as shown in FIG. 5, the latch contact piece 20b is separated from the latch member 3 (dotted line position) and when the latch member 3 is pushed by the rotation of the main body 20a (dashed line position and solid line position). ) Is the stopper 2
0c . As shown in FIG. 6, when the position of the latch member 3 is reversed and the latch member 3 is pressed from the initial position side, the motor 12 is driven.
When the main body 20a is rotated by moving the
b counterclockwise against the urging force of the spring 22,
That to rotate to the full locking position side of the latch member 3
, The biasing force of the spring 22 is set.

The reduction gear lever 9 has an intermediate portion rotatably attached to the base plate 2, and a gear 9 a to which a driving force from a motor 12 attached to the base plate 2 is inputted at the other end. ing. It should be noted that a full lock switch 13 that is turned on by itself when the close lever 20 is located at the full stroke position is provided on the side of the close lever 20. When the close lever 20 is located at the initial position, the return switch 14 is turned on by the reduction gear lever 9.
Is provided. The full stroke position of the close lever 20 is set so as to rotate the latch member 3 slightly before the full lock position (until the engagement projection 3c of the latch member 3 is separated from the pawl 4). When the lever 20 separates from the latch member 3, the latch member 3 rotates by the urging force of a spring (not shown) and hits the pawl 4, so that the full lock state is ensured.

Next, drive control of the motor 12 will be briefly described with reference to FIG.

The driving of the motor 12 is controlled by a control circuit 18. The control circuit 18 has a structure in which the motor 12 rotates forward and backward in accordance with opening and closing of the half lock switch 7, the full lock switch 13, and the return switch 14. The forward rotation of the motor 12 causes the closing lever 2 to rotate.
0 rotates toward the full stroke position, and rotates toward the initial position by reverse rotation.

FIG. 8 is a flowchart showing the operation flow of the control circuit 18. Step 101 is a step of determining whether or not the half lock switch 7 has been turned ON. The process proceeds to the next step if YES, and returns to step 101 if NO. Step 102 is a step of rotating the motor 12 forward. Step 103 is a step of determining whether or not the full lock switch 13 is ON.
If NO, the process returns to step 102, and if YES, the process proceeds to the next step. Step 104 is a step of rotating the motor 12 in the reverse direction. Step 105 is the return switch 14
Is a step of determining whether or not is ON, NO returns to step 104, and YES advances to the next step. Step 106 is a step in which the motor 12 is stopped.

Next, the operation of the embodiment will be described. a) When closing the door When closing the door D, if the force to close the door D is sufficient,
As shown in FIG. 4, only the rotational moment when the striker 1 hits one of the engagement projections 3b of the latch member 3
From the unlock position shown in (i) to the full lock position shown by the solid line (iii) in FIG. The latch member 3 and the striker 1
Is reliably prevented from being disengaged.

On the other hand, when the door D is closed, if the force for closing the door D is insufficient, and the latch member 3 rotates only to the half lock position shown in FIG. The half lock switch 7 is turned on by the open lever 5, and the motor 12 is driven. Motor 12
As shown in FIG. 1, first, the reduction gear lever 9 is rotated in the counterclockwise direction shown by the arrow A through the gear 9a, and the closing lever connected to one end of the reduction gear lever 9 via the closing rod 10. 20 is rotated counterclockwise as indicated by arrow B. The rotation of the closing lever 20 in the counterclockwise direction is performed against the urging force of the spring 21. When the close lever 20 rotates in the counterclockwise direction, the latch member 3 is pushed by the latch contact piece 20b of the close lever 20, and rotates in the counterclockwise direction indicated by arrow E, and FIG. To the full lock position shown in FIG.
At this time, since the close lever 20 is located at the full stroke position, the full lock switch 13 is turned on, and the motor 12 starts reverse rotation. When the motor 12 rotates in the reverse direction, the reduction gear lever 9 and the close lever 20 rotate in the opposite direction, that is, clockwise. That is, the close lever 20 returns from the full stroke position to the initial position. Then, the return switch 14 is turned on by the reduction gear lever 9, and the driving of the motor 12 is stopped. In this way, the latch member 3 and the striker 1 are in the full lock state until the door handle H is opened next time.
Is reliably prevented from being disengaged.

B) When the door is open When the striker 1 on the vehicle body B side and the latch member 3 on the door D side are fully locked, the close lever 20 is located at the initial position.

Therefore, when the door handle H is opened in the full lock state, first, the release lever 6 connected to the remote control mechanism C by the rod 19 is moved to the position shown in FIG.
In the counterclockwise direction indicated by the arrow. When the release lever 6 rotates, the open lever 5 engaged with the release lever 6 rotates clockwise as shown by an arrow G in FIG. 1 in conjunction with the rotation. In addition, since the pawl 4 rotates synchronously with the open lever 5, the pawl 4 also rotates clockwise, and the engagement between the pawl 4 and the engaging protrusion 3c of the latch member 3 is released. Therefore, by applying a force in the opening direction to the door D, the latch member 3 separates from the striker 1 while rotating clockwise without hitting the close lever 20, so that the door D is slid and opened. Can be.

On the other hand, immediately after the striker 1 on the vehicle body B side and the latch member 3 on the door D are in the half-lock state, the motor 12 drives the latch contact piece 20b of the close lever 20 to fully fill the latch member 3. When the door is to be opened immediately after the half-lock state, the latch member 3 is pushed by the force in the direction opposite to the pushing direction of the latch contact piece 20b. When pushed, the positions of the latch contact piece 20b and the latch member 3 are reversed, and the door is opened. However, even in such a case, when closing the opened door, FIG.
As shown in FIG.
The latch contact piece 20b is pushed toward the full stroke position against the urging force of the spring 22 and pivots, and the latch contact piece 20b rides over the latch member 3 and the latch member 3 and the latch contact piece 20b. Returns to normal.

As described above, in the door lock device of the present embodiment, even if the position of the latch contact piece 20b of the close lever 20 and the position of the latch member 3 are reversed and the door is opened, the door is thereafter opened. When the door is closed, the latch contact piece 20b rides over the latch member 3, and the positional relationship between the latch member 3 and the latch contact piece 20b returns to normal. Therefore, it is possible to prevent trouble in opening and closing the door thereafter.

[0030]

As described above, in the door lock device of the present invention, of the pushing members for pushing the latch member, the latch contact piece that contacts the latch member is moved to the full stroke position side. Only when the door is opened because the position of the pushing member and the latch member is reversed, the latch member pushes the latch contact piece toward the full stroke position when closing the opened door. Thereby, the latch contact piece can get over the latch member, and the positional relationship between the latch member and the latch contact piece can be returned to the normal state.
This has the effect of not hindering the opening and closing of the door thereafter.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a door lock device of an embodiment.

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 of the embodiment.

FIG. 4 is a view showing a relationship between a striker, a latch member and a pole when the door is about to be closed, wherein (i) is an unlocked state, (ii) is a half-locked state, and (iii) is a fully locked state.

FIG. 5 is a plan view of a close lever of the door lock device according to the embodiment, showing a normal state of the close lever and the latch member.

FIG. 6 is a plan view of a close lever of the door lock device of the embodiment, showing a state where the close lever and the latch member are reversed.

FIG. 7 is a block diagram illustrating drive control of a motor.

FIG. 8 is a flowchart showing an operation flow of the control circuit.

[Explanation of symbols]

 B vehicle body D door R door lock device 1 striker 3 latch member 4 pawl (rotation restricting member) 12 motor (drive unit) 18 control circuit (control unit) 20 close lever (pressing member) 20a main body 20b latch contact piece 20c Stopper

Claims (1)

(57) [Claims] A striker is fixed to a vehicle body, and a latch member passes through a half-lock position engaged with the striker in a half-locked state from an unlocked position engaged with the striker in an unlocked state. A rotation restricting member that is provided on the door so as to be rotatable to a full lock position to be engaged in the full lock state, and that restricts rotation of the latch member from the full lock position and the half lock position toward the unlock position, When the door handle is opened, a pushing member provided on the door to rotate to a position where the rotation of the latch member is not restricted is provided, and a pushing member for pushing the latch member is closer to the unlock position than the half-lock position of the latch member. From the initial position at which the latch member can be pushed to a full stroke position where the latch member can be pushed to the full lock position. Driving means for driving the pushing member is provided on the door, and when it is detected that the striker and the latch member are in the half-locked state, the pushing member is driven from the initial position toward the full stroke position, When detecting that the striker and the latch member are in the fully locked state,
Control means for controlling the driving means so as to stop after driving the pushing member from the full stroke position to the initial position, the door locking device provided in the vehicle body or door, wherein the pushing member, the door A body rotatably supported,
A latch abutting piece rotatably attached to the main body and abutting against the latch member. The rotation of the latch abutting piece is provided between the main body and the latch abutting piece. forgiveness to, together with the stopper to regulate the to the initial position side is provided, a spring for biasing the latch contact piece to the stopper side is provided, the spring
Of the latch member and the latch contact member.
When the position is reversed, the driving means moves the main body to the initial position.
The latch contact member with the spring.
Rotate in the direction away from the stopper against the force and latch
A door lock device characterized in that the door lock device is set to a strength capable of moving over a member .