JP2002121947A - Door locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door locking device simple in structure with excellent assembling workability, reducible in cost and weight and allowing also an opener mechanism to be motor-driven. SOLUTION: A lock mechanism 20, a closer mechanism 30 and the opener mechanism 40 are mounted on one base 10. As to the closer mechanism 30, a hook lever 31 is directly driven by a closing lever 33 rotationally driven by a motor 50. In the opener mechanism 40, an opening lever 41 is pressed by the closing lever 33 rotationally driven by the motor 50, to release the lock.

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 provided on a back door of an automobile. For details,
A hook rotatably mounted on the base, fitted to the striker that has entered, and a hook that can rotate to the full lock position through the half lock position, and faces the hook across the approach path of the striker, A door lock device having a lock mechanism consisting of a ratchet rotatably pivoted on a base and abutting against a hook at a half-lock position and a full-lock position to restrict rotation of the hook in the unlocking direction. In addition, the present invention relates to a door lock device including a motor-driven closer mechanism and an opener mechanism.

[0002]

2. Description of the Related Art As a door lock device provided with a closer mechanism driven by a motor, for example, Japanese Patent Application Laid-Open No. 8-32638 is disclosed.
No. 6 is disclosed. In this conventional device, the closer mechanism rotates the lock gear by a motor, transmits the movement of the lock gear to a hook lever (release arm) via a link member and a rotation arm, and rotates the hook in the full lock direction. ing. On the other hand, the opener mechanism is configured to rotate the ratchet to a position where the ratchet is released from contact with the hook by manually rotating the open lever.

Further, the base to which the motor is fixed and the base of the lock mechanism are separate bodies, and both bases are configured to be fixed to the door panel separately while positioning each other. In this case, the lock gear is mounted on the base on the motor side, the rotation arm is mounted on the base on the lock mechanism side, and the lock gear and the rotation arm are connected by a link member.

[0004]

The door lock device has a large number of parts and a complicated structure. For this reason, there is a problem that the number of assembling work steps is increased, the cost is high and the weight is increased. In addition, since the components of the closer mechanism are separately arranged on the two bases, positioning accuracy is difficult to achieve, and there is also a problem that the assembling operation requires much time for this adjustment. Further, there is a problem that operability is poor because the opener mechanism is manual.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object a simple structure, excellent workability in assembling, low cost and light weight, and a motor drive for an opener mechanism. It is to realize a door lock device that can be used.

[0006]

According to a first aspect of the present invention, there is provided a vehicle which is pivotally mounted on a base, fits into a striker which has entered, and passes through a half lock position to a full lock position. And a hook rotatable on the base so as to face the hook across the approach path of the striker, and abut against the hooks at the half lock position and the full lock position. A ratchet for regulating the rotation of the hook in the unlocking direction, first urging means for urging the hook in the unlocking direction, and urging the ratchet in a direction for engaging the hook. A second urging means and a pivoting end pivotally attached to the base and reaching the pivoting end of the ratchet, the pivoting end of the ratchet during a lock release operation; Part An open lever that pushes the ratchet to a position where the ratchet is released from contact with the hook, a hook lever that rotates integrally with the hook, and a pivot that pivots on the base. When it is worn and rotates in the forward direction, it pushes the hook lever to rotate the hook in the full lock direction, and when it rotates in the reverse direction, it pushes the open lever to move the ratchet into the hook. A motor that is fixed to the base and drives the close lever to rotate in the forward and reverse directions; and the close lever is the hook lever and the open lever. And a half-lock switch for detecting that the hook has moved to a position before the half-lock. When the half lock switch detects the half lock state by the closing operation of the door and the door, the motor is driven so that the close lever rotates in the forward direction, and the hook is moved through the hook lever. After moving to the full lock position, the motor is rotated in the reverse direction, and when the original position switch detects that the close lever has returned to the initial position, a closing operation for stopping the motor and an instruction to open the door are performed. Upon receipt, the motor is driven so that the close lever rotates in the opposite direction, the hook is moved to the unlock position via the open lever and the ratchet, and then the motor is reversely rotated. When the original position switch detects that the close lever has returned to the initial position, control for performing an opener operation for stopping the motor is performed. And means.

In the present invention, a lock mechanism, a closer mechanism and an opener mechanism are mounted on one base. For this reason, the positioning of the components is easy, and the assembling work is simplified.

In the close mechanism, a hook lever is directly driven by a close lever which is driven to rotate by a motor. For this reason, the number of parts can be reduced, the structure is simplified, and the workability of assembling is improved. Therefore, cost reduction and weight reduction are also possible.

Further, in the opener mechanism, the lock is released by pushing an open lever with a close lever which is driven to rotate by a motor. Therefore, the opener mechanism can be driven by a motor.

According to a second aspect of the present invention, in the first aspect of the present invention, when the opener operates, the control means also monitors the state of the opener switch, and when the opener switch detects that the opener switch has been activated, The motor is driven so that the close lever rotates in the reverse direction.

In the present invention, an opener switch is provided,
This is monitored by the control means. If there is an instruction to open the door, the close lever pushes the open lever, and the door can be easily unlocked.

According to a third aspect of the present invention, in the first or second aspect of the present invention, when the close lever exceeds a rotation range required for the close operation and the opener operation by a predetermined value or more, the movement is stopped. The motor is regulated so that the motor is overloaded, and when the control means detects an overload state of the motor from a current flowing through the motor, the hook is already in the full lock position or the unlock position. , And the motor is rotated in the reverse direction.

According to the present invention, a switch for detecting that the hook has reached the full lock position and a switch for detecting that the hook has reached the unlock position are not provided separately.
The fact that the hook has reached the full lock position or the unlock position can be detected from the current flowing through the motor, and the configuration is simplified.

[0014]

Embodiments of the present invention will be described with reference to the drawings. This type of door lock device is generally mounted on a back door of an automobile, but can also be mounted on a side door. The door lock device according to the present embodiment is mounted on a back door of an automobile. FIG. 1 is an external view of the door lock apparatus when viewed from the front side when the back door of the automobile is closed (posture).

1 to 5, a base 10 is attached to a back door provided at a rear portion of a vehicle body of an automobile, and includes a lower base portion 11 on which a lock mechanism 20 is mainly mounted, and a closer mechanism 30 mainly. And an opener mechanism 40 and an upper base 12 on which a motor 50 as a drive source for these components is mounted.

The base 10 may be a composite member in which, for example, the lower base 11 and the upper base 12 are formed as separate members, and both are fixed by welding or the like.
It may be formed as an integral object from the beginning.

As shown in FIG.
The recess 13 is formed as shown in FIG.
As shown in FIG. 1 and FIG. 5 and the like, an approach path 14 for the striker 21 is formed on the wall surface of the device. Here, as shown in FIG. 3, the striker 21 is generally obtained by bending a round bar into a substantially U-shape, and both ends are fixed to the body side.

As shown in FIGS. 2 and 4, the lock mechanism 20 is located in the recess 13 covered by the cover 15 and in the vicinity of the approach path 14 with the approach path 14 interposed therebetween. In this manner, the hook 22 and the ratchet 23 for restricting the rotation of the hook 22 in the unlocking direction are rotatably supported using the pins 24 and 25, respectively. Further, the hook 22 and the ratchet 23 have one end locked to the base 10 and the other end connected to the hook 22 and the ratchet 2.
3, respectively, torsion springs 26, 2
7 urges each other in a direction of pressing each other (the position where the torsion springs 26 and 27 are locked is not shown).

The hook 22 is fitted into the striker 21 which has entered the recess 13 from the approach path 14 with the holding groove 22h, and is rotatable from the half-lock position to the full-lock position. The hook 22 is in contact with the hook 22 at the lock position and the full lock position to restrict the rotation of the hook 22 in the unlocking direction.
1 and the hook 22 are kept engaged.

For this reason, the claw portion 22a formed in front of the holding groove 22h of the hook 22 protrudes into the approach path 14 of the base 10 to prevent the striker 21 from coming off (the state shown in FIG. 11) or to retreat from the approach path 14. The striker 21 can be released (the state shown in FIG. 7). Also, on the outer periphery of the protrusion 22b formed behind the holding groove 22h of the hook 22, as a step that can be engaged with the claw 23a of the ratchet 23, a step 22c for half lock and a step for full lock are provided. 22d are formed.

Here, the half-lock position of the hook 22 is a position when the step portion 22c for half-lock is engaged with the claw portion 23a of the ratchet 23, and the full-lock position of the hook 22 is This is the position when the step portion 22d for full lock is engaged with the claw portion 23a.

The closer mechanism 30 is pivotally connected to a hook lever 31 which rotates integrally with the hook 22 and a pin 32 on the upper base portion 12 of the base 10 so as to be rotatable.
When turning in the forward direction (counterclockwise direction in FIG. 1), a closing lever 33 which pushes the turning end 31a of the hook lever 31 to turn the hook 22 in the full lock direction.
have.

Specifically, as shown in FIG.
The hook lever 31 is also fixed to the pin 24 to which the 2 is fixed,
Hook 22 and hook lever 3 integrated with pin 24
1 is configured to rotate and the hook lever 31 is rotated.
At the other end of the close lever 33 which pushes the
A sector gear 33a is formed, and the sector gear 33a is meshed with a pinion 51 that is driven to rotate by a motor 50.

The opener mechanism 40 has a ratchet 2
3 and pivotally attached to the upper base portion 12 of the base 10 with the pin 42 by the pin 42, and reach the rotating end portion 41a of the tip end reaching the rotating end portion 23b of the ratchet 23.
When the lock release operation is performed,
3b is pushed to the opposite side of the hook 22 and the ratchet 23 is pushed.
Lever 41 for rotating the open lever 41 to a position where the contact with the hook 22 is released, and a rotating end 41 of the open lever 41
and a torsion spring 43 for urging the open lever 41 in order to keep a contact with the rotating end 23b of the ratchet 23 without any gap.

When the close lever 33 rotates in the opposite direction (clockwise direction in FIG. 1), the open lever 41 is pushed by one end 33b of the open lever 41 and rotates.
Is rotated to a position where the contact with the hook 22 is released.

An original position switch 61 fixed on the base 10 is a switch for detecting that the close lever 33 is at an initial position where the hook lever 31 and the open lever 41 are not pushed. Further, the half lock switch 62 is configured such that the hook 22 is positioned at a position near the half lock (for example,
This is a switch for detecting that it has moved to a position about 10 ° in rotation angle from the half-lock position).

In this embodiment, the closing lever 33
The cam plate 6 that rotates together with the close lever 33
When the close lever 33 reaches the initial position where the hook lever 31 and the open lever 41 are not pushed on the sliding contact surface of the original position switch 61 on the cam plate 64 with the contact lever 61a, A recess 64a is formed such that the contact lever 61a falls down (the original position switch 61 is turned off).

On the other hand, the half lock switch 62 is fixed on the base 10 so that the contact lever 62a is in sliding contact with the hook lever 31. When the hook 22 is rotated in the full lock direction beyond the half lock near position, the contact lever 62a contacts the half lock switch 62. Lever 62a falls down (half lock switch 62
Of the hook lever 31
Is formed.

As the home position switch 61 and the half lock switch 62, a micro switch is used here, but any type of contact type or non-contact type sensor can be used. Typical examples of contact sensors include micro switches, limit switches,
There are touch switches etc., and as a non-contact type sensor,
There are proximity switches that respond to changes in high frequency, capacitance, eddy current, and magnetism, and photoelectric switches such as photo interrupters.

In the closing operation, the control means (not shown) for controlling the driving of the motor 50 turns the close lever 33 in the forward direction when the half lock switch 62 detects the state before the half lock by the closing operation of the door. After driving the motor 50 to move the hook 22 to the full lock position via the hook lever 31, the motor 5
When the original position switch 61 detects that the close lever 33 has returned to the initial position, the motor 50 is stopped.

On the other hand, upon opening the door, when the door is instructed to open, the control means drives the motor 50 so that the close lever 33 rotates in the opposite direction, and the control means drives the open lever 41 and the ratchet 23 via the open lever 41 and the ratchet 23. After moving the hook 22 to the unlock position by rotating the motor 50 in the reverse direction,
When the original position switch 61 detects that the close lever 33 has returned to the initial position, the motor 50 is stopped.

During the above-mentioned closing operation, the control means monitors the state of the half lock switch 62, and when the half lock switch 62 detects that the hook 22 has reached the half lock near position, the close lever 33 is turned in the forward direction. The motor 50 is driven to move.

The instruction to open the door is received via a push button type opener switch (not shown) in this embodiment. Therefore, the control means constantly monitors the state of the opener switch, and when detecting that the opener switch is energized, drives the motor 50 so that the close lever 33 rotates in the reverse direction.

In this embodiment, the close lever 33
However, when the rotation range required for the closer operation and the opener operation exceeds a predetermined value or more, the movement is restricted, and as a result, the motor 50 is overloaded. Then, the control means determines that the motor 50 has been overloaded,
Is detected from the current flowing through the motor 50, it is determined that the hook 22 has already reached the full lock position, or that the hook 22 has reached the unlock position (the open lever 41 has rotated a predetermined amount), and the motor 50 is inverted. .

Next, the operation of the above embodiment will be described in detail. The operation of this embodiment can be easily understood from the timing chart of FIG. 6 and the operation state explanatory diagrams of FIGS. In the operation state explanatory diagrams of FIGS. 7 to 13,
(A) is a state diagram of the main parts as viewed from the viewpoint where the hook 22 comes to the front, and (b) is a state diagram of the main parts as viewed from the viewpoint where the close lever 33 comes to the front. Hereinafter, the operation of the present embodiment will be described with reference to these drawings.

When the back door is opened and the hook 22 is released, the striker 21 comes out of the holding groove 22h of the hook 22. For this reason, the door lock device is in the state shown in FIG. 7, and each switch in this state is
As is apparent from FIG. 6, the half lock switch 62 is on, the original position switch 61 is off, and the motor 50 is stopped (in FIG. 6, the courtesy switch used for controlling the lighting of the room lamp is shown). The state is also shown).

In this state, when the back door starts to be closed, the striker 21 is fitted into the holding groove 22h of the hook 22, and when the back door is further closed, the hook 22 is rotated to reach the half-lock forward position. This is the state shown in FIG.
When the hook 22 reaches this half lock near position,
The half lock switch 62 changes from on to off.
As shown in FIG. 6, when the half-lock switch 62 changes from on to off and the state continues for a predetermined time T1 (for example, 130 msec), the control means rotates the motor 50 in the normal direction and moves the close lever 33 as shown in FIG. Rotate in the forward direction (counterclockwise in FIG. 1).

As a result, the hook lever 31 is pushed and the hook 22 is moved to the half lock position (H / L: rotation angle θ).
It is moved in the full lock direction via 1) and reaches the full lock position (F / L: rotation angle θ2). This is the state shown in FIG. During the transition from this state to this state, the original position switch 61 changes from off to on, as shown in FIG.

After reaching the state, the driving of the motor 50 is continued, and the rotation of the hook 22 in the forward direction is continued. However, after the rotation of the allowed overstroke (for example, 5 °), the rotation of the hook 22 is physically restricted by a stopper (not shown) or the like, and stops. This state is the state shown in FIG. Even in this state, as shown in FIG. 6, since the driving power is supplied to the motor 50, the motor 50 is overloaded and the current flowing through the motor 50 also changes.

When the control means detects this current change, it determines that the hook 22 has reached the upper limit position of rotation, and stops the power supply to the motor 50 for a time T2 (at least 100 msec) as shown in FIG. Then, the motor 50 is reversed. When the original position switch 61 detects that the close lever 33 has returned to the initial position, the motor 5
Stop 0. This state is the state shown in FIG. This state is the end position of the closer operation. In this state, the hook 22 is at the full lock position.

Next, the opener operation will be described. In this state, when a door opening instruction is received by the occupant operating the opener switch, the control means, as shown in FIG.
The motor 5 is rotated so that the closing lever 33 rotates in the opposite direction.
Drive 0. As a result, the open lever 41 is pushed, and the ratchet 23 also rotates and separates from the hook 22.

Therefore, the hook 22 is released and moves to the unlock position. After that, the driving of the motor 50 is continued, and the rotation of the open lever 41 continues. However, after the rotation for the overstroke, the rotation of the open lever 41 is physically restricted by a stopper or the like (not shown),
Will stop. This state is the state shown in FIG. In this state, since driving power is supplied to the motor 50, the motor 50 is overloaded and the current flowing through the motor 50 changes.

When the control means detects this current change, it determines that the open lever 41 has reached the upper limit position of rotation, and after stopping the power supply to the motor 50 for a certain period of time as shown in FIG. The drive of 50 is reversed. When the original position switch 61 detects that the close lever 33 has returned to the initial position, the motor 50 is stopped. This state is the state shown in FIG.

In the above embodiment, one base 10
Since the lock mechanism 20, the closer mechanism 30, and the opener mechanism 40 are mounted thereon, the positioning of the components is easy, and the assembling work is simplified. Further, since the hook lever 31 is directly driven by the close lever 33 which is driven to rotate by the motor 50, the number of parts can be reduced, the structure is simplified, and the assembling workability is improved. Become. Therefore, cost reduction and weight reduction are also possible. Further, in the opener mechanism 40, since the open lever 41 is pushed by the close lever 33 which is rotated and driven by the motor 50 to release the lock, the opener mechanism 40 can also be driven by the motor.

Also, since an opener switch is provided and the control means monitors this, if there is an instruction to open the door by operating the opener switch, the open lever 41 is pushed by the close lever 33 and the door is easily opened. Can be unlocked by motor drive.

Further, in the above embodiment, the hook 22
The hook 22 reaches the full lock position and the unlock position from the current flowing through the motor 50 without separately providing a switch for detecting that the lock position has reached the full lock position and a switch for detecting that the lock position has reached the unlock position. , The configuration is simplified.

As described in the description of the above embodiment, the present invention is not limited to the above embodiment, and various modifications are possible. For example, motor 5
It is detected from the current flowing to 0 that the hook 22 has reached the full lock position or the unlock position. However, a timer is provided, and when the motor 50 is driven for a predetermined time, the hook 22 moves to the full lock position or the unlock position. May be considered as having reached and the next control operation may be performed.
A switch for actually detecting that the hook 22 has reached the full lock position or the unlock position may be provided.

Although the torsion springs 26 and 27 are used as the first and second urging means for urging the hook 22 and the ratchet 23 in the direction of pressing each other, the invention is not limited to the torsion spring. The second urging means may be constituted by a single tension spring stretched between the hook 22 and the ratchet 23, for example.

[0049]

As described above, according to the first aspect of the present invention, since the lock mechanism, the closer mechanism and the opener mechanism are mounted on one base, the positioning of the components is easy. Assembly work is simplified.
Further, as for the close mechanism, the hook lever is directly driven by the close lever which is driven to rotate by the motor, so that the number of parts can be reduced, the structure is simplified, and the workability of the assembling is improved. Therefore, cost reduction and weight reduction are also possible. Further, in the opener mechanism, since the open lever is pushed by the close lever which is driven to rotate by the motor to release the lock, the opener mechanism can also be driven by the motor.

According to the second aspect of the present invention, since the opener switch is provided and the control means monitors the opener switch, if there is an instruction to open the door by operating the opener switch, the open lever is pushed by the close lever. The door can be easily unlocked by driving the motor.

According to the third aspect of the present invention, the hook detects the hook from the current flowing through the motor without separately providing a switch for detecting that the hook has reached the full lock position or a switch for detecting that the hook has reached the unlock position. The arrival at the full lock position or the unlock position can be detected, and the configuration is simplified.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a plan view of a main part of the embodiment shown in FIG.

FIG. 3 is a right side view of the embodiment shown in FIG. 1;

FIG. 4 is a sectional view taken along a cutting line AA in FIG. 3;

FIG. 5 is a bottom view as viewed from a direction B in FIG. 3;

FIG. 6 is a timing chart showing the operation of the embodiment shown in FIG. 1;

FIG. 7 is a view showing an operation state of a closer mechanism in the embodiment shown in FIG. 1;

FIG. 8 is a view showing an operation state of a closer mechanism in the embodiment shown in FIG. 1;

FIG. 9 is a view showing an operation state of a closer mechanism in the embodiment shown in FIG. 1;

FIG. 10 is a diagram showing an operation state of a closer mechanism in the embodiment shown in FIG. 1;

FIG. 11 is a view showing an operation state of a closer mechanism in the embodiment shown in FIG. 1;

FIG. 12 is a view showing an operation state of the opener mechanism in the embodiment shown in FIG. 1;

FIG. 13 is a view showing an operation state of the opener mechanism in the embodiment shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Base 11 Lower base part 12 Upper base part 14 Entry path 20 Lock mechanism 21 Striker 22 Hook 22a Claw part 22b Projection part 22c Step part 22d Step part 22h Holding groove 23 Ratchet 23a Claw part 23b Rotating end part 30 Closer mechanism 31 Hook lever 31b Recess 33 Close lever 33a Sector gear 40 Opener mechanism 41 Open lever 50 Motor 51 Pinion 61 Original position switch 61a Contact lever 62 Half lock switch 64 Cam plate

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E250 AA21 HH01 JJ39 JJ42 JJ52 KK02 LL05 PP04 PP05 QQ02 QQ03 QQ10 RR13 RR23 RR44 SS01 SS11

Claims (3)

[Claims] 1. A hook rotatably pivotally mounted on a base, fitted to a striker that has entered, and rotatable to a full lock position via a half lock position, and a hook that interposes the approach path of the striker. A ratchet rotatably pivotally mounted on the base so as to face the hook and abutting on the hook at the half-lock position and the full-lock position to regulate the rotation of the hook in the unlock direction; First urging means for urging the hook in the unlocking direction, second urging means for urging the ratchet in a direction engaging with the hook, and pivotally attached to the base. The rotating end on the tip end reaching the rotating end of the ratchet pushes the rotating end of the ratchet to the side opposite to the hook during an unlocking operation, and the ratchet is moved. With hook An open lever that rotates to a contact release position; a hook lever that rotates integrally with the hook; and a pivot lever that is rotatably attached to the base and pushes the hook lever when rotating in the forward direction. When the hook is rotated in the full lock direction and when the hook is rotated in the opposite direction, the open lever is pushed to rotate the ratchet to a position where the ratchet is released from contact with the hook. And a motor for rotating the close lever in the forward and reverse directions, and a home position switch for detecting that the close lever is at an initial position where the hook lever and the open lever are not pushed. A half lock switch for detecting that the hook has moved to a position before the half lock, and the half lock switch by closing a door. When the switch detects the half-lock state, the motor is driven so that the close lever rotates in the forward direction, and the hook is moved to the full lock position via the hook lever. When the original position switch detects that the close lever has returned to the initial position,
When a close operation for stopping the motor and an instruction to open the door are received, the motor is driven so that the close lever rotates in the opposite direction, and the hook is moved via the open lever and the ratchet. After moving to the unlock position, the motor is rotated in reverse,
And a control means for performing an opener operation to stop the motor when the home position switch detects that the shift lever has returned to the initial position. 2. When the opener is operated, the control means also monitors the state of the opener switch, and upon detecting that the opener switch is energized, the control means causes the close lever to rotate in the opposite direction. 2. The door lock device according to claim 1, wherein a motor is driven. 3. When the closing lever exceeds a rotation range required for the closing operation and the opener operation by a predetermined value or more, the movement is restricted, and as a result, the motor is overloaded. In addition, the control means, when detecting the overload state of the motor from the current flowing to the motor, determines that the hook has already reached the full lock position or unlock position, and reverses the motor, characterized in that The door lock device according to claim 1 or 2, wherein