JP4028166B2 - Door lock device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a door lock device provided in a back door or the like of an automobile. Specifically, it is pivotally mounted on the base, is fitted to the striker that has entered, and can be turned to the full lock position via the half-lock position, and the hook is opposed to the striker via the entry path. And a lock mechanism that is pivotally mounted on the base and that includes a ratchet that abuts on the hooks at the half-lock position and the full-lock position and restricts the hook from rotating in the unlocking direction. The present invention relates to a door lock device including a closer mechanism and an opener mechanism driven by a motor.
[0002]
[Prior art]
As a door lock device provided with a closer mechanism driven by a motor, for example, there is one described in JP-A-8-326386. In this conventional apparatus, the closer mechanism rotates the lock gear by a motor, transmits the movement of the lock gear to the hook lever (release arm) via the link member and the 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 the contact release position with the hook by manually rotating the open lever.
[0003]
The base to which the motor is fixed and the base of the lock mechanism are separate, and both bases are configured to be fixed to the door panel separately while positioning each other. In this case, the lock gear is attached to the base on the motor side, the rotation arm is attached to the base on the lock mechanism side, and the lock gear and the rotation arm are connected by a link member.
[0004]
[Problems to be solved by the invention]
The door lock device has a large number of parts and a complicated structure. For this reason, there are problems that the number of assembling work steps is increased and the cost is high and the weight is increased. Further, since the components of the closer mechanism are separately arranged on the two bases, it is difficult to obtain positioning accuracy, and there is a problem that it takes a lot of time for assembly work for this adjustment. Furthermore, since the opener mechanism is manual, there is a problem that operability is poor.
[0005]
The present invention has been made in view of the above-mentioned problems, and its problem is a door lock that has a simple structure, excellent assembly workability, can be reduced in cost and weight, and can be driven by a motor for an opener mechanism. To implement the device.
[0006]
[Means for Solving the Problems]
The invention according to claim 1, which solves the above problem, is pivotally mounted on a base, is fitted to a striker that has entered, and is capable of rotating to a full lock position via a half-lock position; It is pivotally mounted on the base so as to face the hook across the striker entry path, and is in contact with the hook at the half-lock position and the full-lock position, and in the unlocking direction of the hook. A ratchet that restricts the rotation of the hook, a first biasing means that biases the hook in the unlocking direction, a second biasing means that biases the ratchet in a direction to engage the hook, A pivot end pivotally attached to the base and reaching the pivot end of the ratchet pushes the pivot end of the ratchet opposite to the hook during the unlocking operation. Move When an open lever that rotates the jet to the contact release position with the hook, a hook lever that rotates integrally with the hook, and a base that is pivotally attached to the base and rotates in the forward direction When the hook lever is pushed to turn the hook in the full lock direction, and when the hook is turned in the reverse direction, the open lever is pushed to turn the ratchet to the contact release position with the hook. A close lever, a motor fixed to the base and rotationally driving the close lever in the forward and reverse directions, and the close lever in an initial position not pushing the hook lever and the open lever An original position switch for detecting this, a half lock switch for detecting that the hook has moved to the half lock front position, and a door closing operation. When serial half-lock switch detects that the hook has moved to the half-lock position before the black - Zureba is by driving the motor to rotate in the forward direction, full of the hook via the hook lever After moving to the lock position, when the original position switch detects that the motor is reversely rotated and the close lever is returned to the initial position, a closing operation for stopping the motor and an instruction to open the door are received. And driving the motor so that the close lever rotates in the reverse direction, moving the hook to the unlock position via the open lever and the ratchet, then reversing the motor, When the original position switch detects that the close lever has returned to the initial position, an opener operation is performed to stop the motor. And a control means.
[0007]
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 component parts is easy, and the assembling work is simplified.
[0008]
As for the closer mechanism, the hook lever is directly driven by a close lever that is rotationally driven by a motor. For this reason, the number of parts can be reduced, the structure is simplified, and the assembly workability is improved. Therefore, the cost and weight can be reduced.
[0009]
Furthermore, in the opener mechanism, the lock is released by pushing the open lever with a close lever that is rotationally driven by a motor. Therefore, the opener mechanism can be driven by a motor.
[0012]
Furthermore a first aspect of the present invention, prior Symbol Black - Zureba is, exceeds the rotational range required for the closer operation and the opener operates above the predetermined value, the movement is restricted, the overload on the result the motor With such a configuration, when the overload state of the motor is detected from the current flowing through the motor, the control unit determines that the hook has already reached the full lock position or the unlock position, and reverses the motor. It is characterized by doing.
[0013]
In the present invention, the hook is moved from the current flowing to the motor to the full lock position or the unlock position without separately providing a switch for detecting that the hook has reached the full lock position or a switch for detecting the arrival at the unlock position. It is possible to detect the arrival, and the configuration becomes simple.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
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 of the present embodiment is mounted on a back door of an automobile, and an external view seen from the front side in a state (posture) in which the back door of the automobile is closed corresponds to FIG.
[0015]
1 to 5, a base 10 is attached to a back door provided at the rear part of a vehicle body of an automobile, and mainly includes a lower base portion 11 on which a lock mechanism 20 is mounted, a closer mechanism 30 and an opener mechanism. 40 and an upper base portion 12 on which a motor 50 as a driving source is mounted.
[0016]
As this base 10, for example, the lower base portion 11 and the upper base portion 12 may be formed of separate members, and may be formed of a composite member in which both are fixed by welding or the like, or may be formed as an integral object from the beginning. Good.
[0017]
A recess 13 is formed in the lower base portion 11 of the base 10 as shown in FIG. 4, and the striker 21 enters the wall surface of the recess 13 by a notch as shown in FIGS. A path 14 is formed. Here, as shown in FIG. 3, the striker 21 is generally a round bar bent into a substantially U shape, and both end portions are fixed to the body side.
[0018]
As shown in FIG. 2 and FIG. 4, as shown in FIG. 2 and FIG. 4, face each other with the entrance path 14 in the vicinity of the entrance path 14 in the recess 13 covered with the cover 15 so as to constitute the lock mechanism 20. The hook 22 and the ratchet 23 that restricts the rotation of the hook 22 in the unlocking direction are supported rotatably using pins 24 and 25, respectively. Further, the hook 22 and the ratchet 23 are urged in a direction in which they are pressed against each other by torsion springs 26 and 27 having one end locked to the base 10 side and the other end locked to the hook 22 and the ratchet 23, respectively. (The torsion springs 26, 27 are not shown in their locking positions).
[0019]
The hook 22 is fitted to the striker 21 that has entered the recess 13 from the entry path 14 with a holding groove 22h, and can be turned to the full lock position via the half lock position. The ratchet 23 Abutting on the hook 22 in the full lock position, the rotation of the hook 22 in the unlocking direction is restricted, and the meshing state of the striker 21 and the hook 22 is maintained.
[0020]
For this reason, the claw portion 22a formed in front of the holding groove 22h of the hook 22 protrudes into the entry path 14 of the base 10 to prevent the striker 21 from coming off (the state of FIG. 11), or retracts from the entry path 14 and striker 21 Can be released (state shown in FIG. 7). Further, on the outer periphery of the projecting portion 22b formed in the holding groove 22h rear hooks 22, as the claw portion 23a engageable with a stepped portion of the ratchet 23, stepped portion 22 d and the stage for full lock for half lock A portion 22c is formed.
[0021]
Here, the half lock position of the hook 22 is a position when the half lock step 22 d is engaged with the claw 23 a of the ratchet 23, and the full lock position of the hook 22 is the claw of the ratchet 23. This is the position when the full lock step 22c is engaged with the portion 23a.
[0022]
The closer mechanism 30 is pivotally attached to the upper base portion 12 of the base 10 so as to be rotatable with a pin 32, and is rotated in a positive direction (counterclockwise in FIG. 1). In order to rotate, a close lever 33 that pushes the rotation end 31a of the hook lever 31 and rotates the hook 22 in the full lock direction is provided.
[0023]
Specifically, as shown in FIG. 4, the hook lever 31 is also fixed to the pin 24 to which the hook 22 is fixed, and the hook 22 and the hook lever 31 are configured to rotate integrally with the pin 24. A sector gear 33a is formed at the other end of the close lever 33 that pushes the hook lever 31 at one end 33b, and the sector gear 33a is engaged with a pinion 51 that is rotationally driven by a motor 50.
[0024]
The opener mechanism 40 is pivotally attached to the upper base portion 12 of the base 10 with a pin 42 in a state where the tip is directed to the ratchet 23, and the opener mechanism 40 reaches the turning end portion 23 b of the ratchet 23. The open end 41a that rotates the ratchet 23 to the contact release position with the hook 22 by pushing the rotation end 23b of the ratchet 23 to the opposite side to the hook 22 during the unlocking operation. And a torsion spring 43 for urging the open lever 41 so that the rotating end 41a of the open lever 41 is in contact with the rotating end 23b of the ratchet 23 without any gap.
[0025]
When the close lever 33 rotates in the reverse direction (clockwise in FIG. 1), the open lever 41 rotates by being pushed by one end 33b of the open lever 41 until the contact with the hook 22 is released. It is something to move.
[0026]
The original position switch 61 fixed on the base 10 is a switch for detecting that the close lever 33 is in an initial position where the hook lever 31 and the open lever 41 are not pushed. The half-lock switch 62 is a switch that detects that the hook 22 has moved to a position before the half-lock (for example, a position that is about 10 ° before the half-lock position).
[0027]
In this embodiment, a cam plate 64 that rotates together with the close lever 33 is fixed on the close lever 33, and the close contact surface with the contact lever 61a of the original position switch 61 on the cam plate 64 is fixed to the close lever 33. When the lever 33 reaches the initial position where the hook lever 31 and the open lever 41 are not pushed, the concave portion 64a is formed so that the contact lever 61a falls (the original position switch 61 is turned off).
[0028]
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, and when the hook 22 is rotated in the full lock direction beyond the half lock front position, the contact lever 62a is moved. A recess 31b is formed in the hook lever 31 so as to be depressed (the half lock switch 62 is turned off).
[0029]
As the original position switch 61 and the half lock switch 62, a micro switch is used here, but any type of sensor of contact type or non-contact type can be used. Typical contact sensors include micro switches, limit switches, touch switches, etc. Non-contact sensors include proximity switches that respond to changes in high frequency, capacitance, eddy current, and magnetism. And a photoelectric switch such as a photo interrupter.
[0030]
A control means (not shown) for driving and controlling the motor 50 causes the close lever 33 to rotate in the forward direction when the half-lock switch 62 detects a state before the half-lock by closing the door during the closing operation. After driving the motor 50 and moving the hook 22 to the full lock position via the hook lever 31, the motor 50 is reversely rotated and the original position switch 61 detects that the close lever 33 has returned to the initial position. Then, the motor 50 is stopped.
[0031]
On the other hand, upon the opening operation, upon receiving an instruction to open the door, the control means drives the motor 50 so that the close lever 33 rotates in the reverse direction, and the hook 22 through the open lever 41 and the ratchet 23. Is moved to the unlock position, the motor 50 is rotated in the reverse direction, and when the original position switch 61 detects that the close lever 33 has returned to the initial position, the motor 50 is stopped.
[0032]
During the 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 front position, the close lever 33 rotates in the forward direction. The motor 50 is driven.
[0033]
The door opening instruction is received via an opener switch such as a push button type not shown in the present embodiment. Therefore, the control means constantly monitors the state of the opener switch, and when it detects that the opener switch is energized, it drives the motor 50 so that the close lever 33 rotates in the reverse direction.
[0034]
In the present embodiment, when the close lever 33 exceeds a predetermined rotation range required for the closer operation and the opener operation, the movement is restricted, and as a result, the motor 50 is overloaded. ing. When the control means detects the overload state of the motor 50 from the current flowing through the motor 50, the control means determines that the hook 22 has already reached the full lock position, or the hook 22 has reached the unlock position (open lever 41). And the motor 50 is reversed.
[0035]
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. 7 to 13, (a) is a state diagram of the main parts viewed from the viewpoint that the hook 22 is in front, and (b) is that the close lever 33 is in front. It is a state diagram of main parts seen from a viewpoint. The operation of the present embodiment will be described below with reference to these drawings.
[0036]
In the state (1) in which the back door is opened and the hook 22 is released, the striker 21 has come out of the holding groove 22 h 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 in the state in which the half lock switch 62 is on and the original position switch 61 is off, as is apparent from FIG. 50 is stopped (the state of the courtesy switch used for lighting control of the room lamp is also shown in FIG. 6).
[0037]
In this state (1), when the back door is started to close, 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 and reaches the half-lock front position. This is state (2) shown in FIG. When the hook 22 reaches this half-lock front 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 situation continues for a certain time T1 (for example, 130 msec), the control means causes the motor 50 to rotate forward and the close lever 33 to move. Rotate in the positive direction (counterclockwise in FIG. 1).
[0038]
As a result, the hook lever 31 is pushed and the hook 22 is moved in the full lock direction through the half-lock position (H / L: rotation angle θ1) to reach the full-lock position (F / L: rotation angle θ2). To do. This is state (3) shown in FIG. During the transition from the state {circle around (2)} to this state {circle around (3)}, the original position switch 61 changes from off to on as shown in FIG.
[0039]
Even after reaching the state (3), the driving of the motor 50 is continued and the hook 22 continues to rotate in the forward direction. However, after the rotation for an allowable overstroke (for example, 5 °), the rotation of the hook 22 is physically restricted by a stopper or the like (not shown) and stopped. This state is state (4) shown in FIG. Even in this state (4), as shown in FIG. 6, since driving power is supplied to the motor 50, the motor 50 is overloaded, and the current flowing through the motor 50 also changes.
[0040]
Therefore, when the control means detects this current change, it is determined that the hook 22 has reached the upper limit position of rotation, and as shown in FIG. 6, after the power supply to the motor 50 is stopped for a time T2 (at least 100 msec), the motor Reverse 50. 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 state (5) shown in FIG. This state (5) is the closing position of the closing operation, and in this state (5), the hook 22 is in the full lock position.
[0041]
Next, the opener operation will be described. In state {circle around (5)}, when an opening instruction is received by the occupant operating the opener switch, the control means drives the motor 50 so that the close lever 33 rotates in the reverse direction as shown in FIG. To do. As a result, the open lever 41 is pushed, and the ratchet 23 is also rotated and detached from the hook 22.
[0042]
For this reason, the hook 22 is released and moved to the unlock position. Thereafter, 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) and stopped. This state is the state (6) shown in FIG. In this state {circle around (6)}, since drive power is supplied to the motor 50, the motor 50 is overloaded, and the current flowing through the motor 50 changes.
[0043]
Therefore, 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 the power supply to the motor 50 is stopped for a certain time, as shown in FIG. 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 a state (7) shown in FIG.
[0044]
In the above embodiment, since the lock mechanism 20, the closer mechanism 30 and the opener mechanism 40 are mounted on one base 10, the positioning of the components is easy and the assembling work is simplified. In addition, since the closer mechanism 30 is driven directly by the close lever 33 that is driven by the motor 50, the number of parts can be reduced, the structure can be simplified, and the assembly workability can be improved. Become. Therefore, the cost and weight can be reduced. Further, in the opener mechanism 40, the open lever 41 is pushed by the close lever 33 that is driven to rotate by the motor 50 to release the lock, so that the opener mechanism 40 can also be driven by the motor.
[0045]
Also, since an opener switch is provided and this is monitored by the control means, 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 locked. Can be released by motor drive.
[0046]
Furthermore, in the above embodiment, the hook 22 is detected from the current flowing through the motor 50 without providing a separate switch for detecting that the hook 22 has reached the full lock position or a switch for detecting that the hook 22 has reached the unlock position. Since it is detected that has reached the full lock position or the unlock position, the configuration is simplified.
[0047]
As described in the description of the above embodiment, the present invention is not limited to the above embodiment, and various modifications can be made. For example, it is detected from the current flowing through the motor 50 that the hook 22 has reached the full lock position or the unlock position. If a timer is provided and the motor 50 is driven for a predetermined time, the hook 22 It may be configured to assume that the unlock position has been reached and to proceed to the next control operation, or a switch that actually detects that the hook 22 has reached the full lock position or the unlock position may be provided. .
[0048]
Further, 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 in which they are pressed against each other, it is not necessary to be limited to the torsion spring. The biasing means may be constituted by a single tension spring stretched between the hook 22 and the ratchet 23, for example.
[0049]
【The invention's effect】
As described above, in the invention described in claim 1, since the lock mechanism, the closer mechanism, and the opener mechanism are mounted on one base, the positioning of the components is easy, and the assembling work is simplified. Become. In addition, the closer mechanism is driven directly by a close lever that is rotated by a motor, so that the number of parts can be reduced, the structure is simplified, and the assembly workability is improved. Therefore, the cost and weight can be reduced. Further, in the opener mechanism, the open lever is pushed by a close lever that is rotationally driven by the motor to release the lock, so that the opener mechanism can be driven by the motor.
[0051]
Further, according to the first aspect of the present invention, the hook is fully locked from the current flowing in 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 position or 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.
3 is a right side view of the embodiment shown in FIG. 1. FIG. 4 is a cross-sectional view taken along a cutting line AA in FIG.
FIG. 5 is a bottom view seen from the direction B in FIG. 3;
6 is a timing chart showing the operation of the embodiment shown in FIG.
7 is a view showing an operating state of the closer mechanism in the embodiment shown in FIG. 1; FIG.
8 is a view showing an operating state of the closer mechanism in the embodiment shown in FIG.
9 is a view showing an operating state of the closer mechanism in the embodiment shown in FIG.
10 is a view showing an operating state of the closer mechanism in the embodiment shown in FIG.
11 is a view showing an operating state of the closer mechanism in the embodiment shown in FIG.
12 is a diagram showing an operating state of the opener mechanism in the embodiment shown in FIG.
13 is a view showing an operating state of the opener mechanism in the embodiment shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Base 11 Lower base part 12 Upper base part 14 Entrance path 20 Locking 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

Claims (1)

A hook pivotably mounted on the base, fitted to the striker that has entered, and a hook that can be rotated to the full lock position via the half-lock position,
The hook is pivotally mounted on the base so as to face the hook across the striker entry path, and is in contact with the hook at the half-lock position and the full-lock position, so that the hook is unlocked. A ratchet that regulates rotation to the
First urging means for urging the hook in the unlocking direction;
Second urging means for urging the ratchet in a direction to engage the hook;
The pivot end of the ratchet pivotally attached to the base and reaching the pivot end of the ratchet moves the pivot end of the ratchet to the opposite side of the hook during the unlocking operation. An open lever that pushes and rotates the ratchet to a contact release position with the hook;
A hook lever that rotates integrally with the hook;
When pivoting in the forward direction, the hook lever is pushed to turn the hook in the full lock direction, and to rotate in the reverse direction, the open lever is pushed. A close lever that moves and rotates the ratchet to a contact release position with the hook;
A motor fixed to the base and driving the close lever to rotate in the forward and reverse directions;
An original position switch for detecting that the close lever is in an initial position not pushing the hook lever and the open lever;
A half-lock switch that detects that the hook has moved to a half-lock front position;
When the half-lock switch detects that the hook has moved to the half-lock front position due to the door closing operation, the motor is driven so that the close lever rotates in the forward direction, and the hook lever is A closing operation for stopping the motor when the original position switch detects that the close lever has returned to the initial position after the hook is moved to the full lock position. When the opening instruction is received, the motor is driven so that the close lever rotates in the reverse direction, and the hook is moved to the unlock position via the open lever and the ratchet. When the original position switch detects that the close lever has returned to the initial position, the motor is stopped. And control means for performing the opener operation,
A door lock device comprising:
When the closing lever exceeds a predetermined rotation range required for the closing operation and the opening operation, the movement is restricted, and as a result, the motor is overloaded and the control is performed. When the means detects the overload state of the motor from the current flowing through the motor, the means determines that the hook has already reached the full lock position or the unlock position, and reverses the motor. .

Images