JPH0274776A - Locking device for automobile door - Google Patents

Abstract

PURPOSE:To make it possible to perform door closing operation thereafter without any trouble even if the door is opened directly after door closing by driving the pushingly moving member of a latch plate to return to the original position, according to a detected signal of opening door operation by a detecting means. CONSTITUTION:A detecting means for opening door operation with a door handle is provided in an auto-closure type door mechanism, and the pushingly moving means 15 of a latch plate 12 is brought to be driven by a driving control means. When the latch plate 12 is reached to a full lock condition from a half lock condition, the driving control means drives the pushingly moving member 15 to return to the original position based on the detected signal. Further, when door opening operation is performed, the driving control means drives the pushingly moving member 15 to return to the original position based on the detected signal.

Description

[Detailed Description of the Invention] A. Industrial Field of Application The present invention relates to a locking device for an automobile door, and more specifically, the present invention relates to a locking device for an automobile door. This allows the subsequent door closing operation to be performed without any hindrance.

B. Prior Art When closing a car door, the closing force is large and heavy due to the reaction force of the weather strip that seals the door and the opening of the car body and the reaction force of the air trapped in the passenger compartment. Therefore, if the closing force is small, the door lock device enters a half-locked state, so it is necessary to close the door with a large closing force. In order to reduce the closing force of the door, when the door lock device is in the half-locked state, it automatically operates the door to the full-locked state and closes the door completely.
A device disclosed in Japanese Patent No. 137067 and a device proposed in Japanese Patent Application No. 1982-262456 previously filed by the present applicant are known.

FIGS. 8(a) and 8(b) schematically explain such a device, with (a) showing the half-locked state.

(b) shows the full lock state. The latch plate 1, pawl 2, and drive lever 3 are provided on the sliding door side (not shown), and when the sliding door is closed in the direction of arrow A,
First, the striker 4 on the vehicle body side and the latch plate 1 are engaged in a half-locked state as shown in the figure. Therefore, this half-locked state is detected by a signal from a contact provided between the sliding door and the vehicle body, and the drive lever 3 is rotated in the direction B in the drawing by a motor (not shown). As a result, the latch plate 1 engaged with the striker 4 rotates in the C direction via the latch lever 1a, and the door is forcibly closed in the direction of the arrow 6.
8(b), the pawl 2 prevents the latch plate 1 from moving in the door opening direction (clockwise). Note that a motor (not shown) that drives the drive lever 15 is provided on the door, and is configured to receive power from the vehicle body after the door is in a half-locked state. Further, the drive lever 3 is returned to its initial position by driving a motor in response to a full lock signal indicating that the latch plate 1 is in a fully locked state.

When a door handle (not shown) is operated to open the door, the pole 2 rotates in the direction shown, and the latch plate 1
Once the latch plate 1 is rotated counterclockwise, the engagement between the two is released, and when the door is opened in the direction E in the figure, the engagement between the latch plate 1 and the striker 4 is released, and the door is opened.

C0 Problem to be Solved by the Invention In such a device, when the door is opened immediately after the door is closed, the drive lever 3 has started to be driven clockwise by the detection signal indicating the half-locked state. When the power supply to the motor is stopped due to the opening of the door, the drive lever 3 stops at an intermediate position. Therefore, if a door closing operation is performed in this state, the latch plate 1 and the drive lever 3 will collide. For this reason,
It is necessary to return the drive lever 3 to its initial position by using another device to output a pseudo full lock signal indicating the full lock state. In other words, a separate device is required to output a pseudo full lock signal.

The technical problem of the present invention is to obtain a circuit that automatically outputs a pseudo full-lock signal when a door opening operation is performed immediately after closing an auto-closing one-type door. The objective is to enable the door closing operation to be performed without any hindrance.

00 Means for Solving the Problems A detection means for detecting a door opening operation using a door handle is provided. Further, a pushing member that drives the latch plate to the full lock position when the half lock state is detected is driven by the drive control means. This drive control means is
The pushing member is driven toward the initial position by a logical OR signal of a detection signal indicating that the latch member is in a fully locked state and a detection signal from the detection means.

When the latch member reaches the full lock state from the half-locked state, the drive control means drives the pushing member toward the initial position based on a detection signal indicating this state. Furthermore, when the door opening operation is detected by the detection means and the detection output signal is inputted, the pushing member is also driven in the direction of the initial position.

Therefore, even if the door opening operation is performed immediately after the door closing operation, the pushing member rotates in the initial position direction immediately after starting to rotate in the full lock direction and returns to the initial position. Therefore, subsequent door closing operations can be performed without any hindrance.

F. EXAMPLE Hereinafter, the present invention will be explained in detail based on FIGS. 1 to 7.

(1) Structure of the latch device Fig. 2 is a perspective view of the latch device in a half-locked state, and the latch plays 1 to 12 (latch members) are rotatable in a housing 11 provided on a sliding door (not shown). Supported. When the latch plate 12 engages with a striker 13 (not shown) fixed to the vehicle body, the sliding door is closed and locked with respect to the vehicle body.

3(a) to CQ) are diagrams showing changes in the engagement between the striker 13 and the latch plate 12 when opening the sliding door in the direction of arrow F. First, as shown in (a), the latch plate The striker 13 is pushed by the striker 13 on one of the protrusions 121, and the latch plate 12 rotates clockwise to enter the half-locked state shown in (b). When the door is further closed in the F direction until it is fully locked, the latch plate 1 will close as shown in (c).
The protrusion 122 of No. 2 climbs over the pole (deterrent member) 14,
The door opening movement of the latch plate 12 is reliably restrained by the pawl 14, and the door is completely opened. (
When the pawl 14 is rotated counterclockwise from the fully locked state of c) via a well-known door remote control device by operating a door handle (not shown), the pawl 14 once rotates the latch plate 12 clockwise and closes the protrusion 122. The engagement with is released. As a result, when the sliding door is moved to open in the direction G in the figure, the engagement between the latch plate 12 and the striker 13 is released, and the door can be opened.

By the way, if the sliding door is closed in a half-locked state as shown in FIG. condition.

Therefore, as shown in FIG. 2, a drive lever (pushing member) 15 is rotatably supported on the top surface of the housing 11, and a cable 16 is connected to a fan-shaped drive gear 17 driven by a motor 104, which will be described later. is connected to the drive lever 15. The latch plate 1 is located on the rotation locus of the drive lever 15.
Since the latch plate 2 protrudes, when the gear 17 is rotated forward and the drive lever 15 is rotated counterclockwise in the figure, the latch plate 1
2 rotates clockwise, that is, in the direction of full lock. On the other hand, the housing 11 rotatably supports a pole drive lever 18 to which a cable 19 is connected.

The cable 19 is connected to a door remote control device 20, and when the door handle 21 is operated, the cable 19 is pushed through the door remote control device 20, and the pawl 14 is rotated counterclockwise, thereby preventing the latch plate 12 from being restrained by the pawl 14. solve. In addition, 105 is a full lock switch to be described later, and 10
7 is a half-lock switch.

(II) Structure of Motor and Drive System As shown in FIG. 4, a motor 104 is fixed to a plate 55 fixed to the sliding door.

A worm 52 is provided on the motor output shaft, and a plate 5
The worm wheel 53 is rotatably supported by the worm wheel 53. A gear 54 is provided integrally with the worm wheel 53 and meshes with a sector-shaped drive gear 17 that is swingably supported by a plate 55. The above-mentioned cable 16 is connected to the drive gear 17, and a neutral switch 106 that is turned off when the drive gear 17 is in the neutral position is connected to the plate 55.
is fixed to.

(II) Configuration of control circuit FIG. 1 is a circuit diagram showing the configuration of the control circuit (drive control means) 10o, and the positive contact 3 connected to the battery BT.
1 and a negative contact 32 are provided protruding from the vehicle body 30 on the opening/closing trajectory of the door. Contacts 41 and 42 protrude from the sliding door 40, facing each of these contacts 31 and 32, and these contacts constitute a switch 108. The control circuit 100 includes a forward rotation relay R1 forming a forward rotation circuit for energizing the motor 104 in the forward direction;
Reverse relay R2 forms a reverse circuit for energizing 04 in the reverse direction, and these forward relay R1 and reverse relay R
2, and a timer IC circuit TC. Further, the full lock switch 105, which is turned on when the latch plate 12 is in the full lock state, and the drive gear 17 are in the neutral position (
A neutral switch 106 that is turned off at the initial position (initial position) and turned on at other times, and a half-lock switch 107 that is turned on when the latch plate 12 is in the bar-frozen position, as shown in the perspective view of the side of the sliding door 40 in FIG. It has a handle switch 109 that is turned on when a door opening operation is performed using the inner handle 50 or the outer handle 51.

As shown in FIG. 6(a), the timer IC circuit TC has the following characteristics:
In the normal state when the terminal is high level, the O terminal is high level,
When the S terminal goes to high level, the O terminal goes to low level for a certain period of time T, and when the R terminal goes to low level, even if the S terminal goes to high level, the O terminal goes to high level.

Next, the operation of the above configuration will be explained with reference to the time chart of FIG. 6(b).

When the sliding door 40 begins to close, the conductive swing 1
08 is turned on and the control circuit 100 is connected to the battery BT. Furthermore, close the sliding door 40 and latch plate 1.
2 enters the half-lock state shown in FIGS. 3(a) to 3(b), the half-lock switch 107 turns on, and the timer IC
A high level signal is applied to the S terminal of the circuit TC. As a result, the O terminal of the timer IC circuit TC becomes low level for a predetermined period of time, the forward rotation relay coil RIC is excited, and the a and c contacts of the forward rotation relay R1 are connected.

Switch 108 → A, A contacts of forward rotation relay R1 → Motor 104 → A, B contacts of reverse rotation relay R2 - Switch 108
→A grounded normal rotation circuit is formed, and the motor 104 rotates in the normal direction.

As a result, the drive gear 17 swings clockwise in FIG.
The drive lever 15 rotates counterclockwise via the cable 16 to push the latch plate 12. The latch plate 12 rotates clockwise, and the striker 13 forcibly drives the sliding door. When the latch plate 12 rotates to the full lock position, the protrusion 122 of the latch plate 12 rides over the pawl 14 as shown in FIG. 3(c), and the pawl 14 reliably prevents the latch plate 12 from opening the door. , the sliding door 40 is completely closed. In the above movement process, when the drive gear 17 swings from the initial position, the neutral switch 106 is turned on from off.

When the drive lever 15 rotates counterclockwise to rotate the latch plate 12 to the full lock position.

The full lock switch 105 turns on and the timer IC [[I
The R terminal of TC becomes low level and the O terminal becomes high level, the forward rotation relay coil RIC is demagnetized, its contacts a and b are connected instead of a and c, and the normal rotation circuit is opened. At this time, switch 108→neutral switch 106
→ Reverse relay coil R2C → A, B contacts of forward relay R1 - switch 108 → Earth circuit is formed, and reverse relay R2 is turned on to connect its A, Q contacts. As a result, switch 108→reverse relay R2 a.

A reversal circuit of C contact→motor 104→a and b contacts of forward rotation relay R1, switch 108→earth is formed, and the motor 104 is reversed.

As a result, the drive gear 17 swings in the reverse direction, and the drive lever 15 rotates clockwise via the cable 16.

When the drive gear 17 returns to the initial position, the neutral switch 1
06 is turned off, the reversing relay coil R2G is demagnetized, and its a and b contacts are connected. Therefore, the reversing circuit is opened and the motor 104 is stopped.

As a result of the above, the latch plate 12 is fully locked, and the sliding door 40 is reliably locked. However, before the latch plate 12 is fully locked, while the drive lever 15 is pushing the latch plate 12, When the door is opened using the outer handle 51, the handle switch 109 is turned on and the R terminal of the timer IC circuit TC becomes low level. As a result, the O terminal of the timer IC circuit TC becomes high level, and the forward rotation relay R1, which has been in an energized state, is deenergized and turned off. Then, contacts a and b of forward rotation relay R1 are connected, so switch 108→neutral switch 106→reverse relay coil R2C→a of forward rotation relay R1
, the reversing relay R2 is energized by the circuit from contact b to switch 108 to ground. As a result, the reversing relay R2 is turned on, the motor 104 is reversed through its contacts a and c, and the drive lever 15 is returned to its initial position. After this, by moving the sliding door 40 away from the vehicle body 30,
Switch 108 is turned off.

In the time chart of FIG. 6(b), the period T□ indicates the operation timing of each part when the door opening operation is not performed immediately after the door closing operation.

The period T2 indicates the operation timing when the door opening operation is performed immediately after the door closing operation.

As described above, in this embodiment, the ON signal of the handle switch 109 is ORed with the ON signal of the full lock switch 105 and is input to the R terminal of the timer IC circuit TC, so that the door opening operation is performed immediately after the door closing operation. Since the drive lever 15 is configured to return to the initial position if the door is closed, even if the door is opened immediately after the door is closed, the subsequent door closing operation can be performed without any trouble without having to operate a separate member as in the conventional case. can be done.

(rV) Second Embodiment of Control Circuit 10'O FIG. 7 is a circuit diagram showing a second embodiment of the control circuit 100, in which the drive lever 15 begins to push the latch plate 12. When the door is opened before, the half lock switch 10
7 changes from on to off. That is, the half-lock switch 107 is off when the door is open and on at least from the half-lock state to the full-lock state, but if the door is opened before the door is fully locked, it returns from the on state to the off state. Therefore, this embodiment makes use of this fact, and the timer IC circuit TC
The S terminal of the timer IC is grounded via the resistor R, and the timer IC
It is connected to the R terminal of the circuit TC via a diode D.

If the door is opened and the half lock switch 107 is turned off before the full lock state is reached, the R terminal becomes low level through the diode D. As a result, the timer IC circuit T
The 0 terminal of C becomes a high level, and then the motor 104 reverses in the same manner as in the first embodiment, and the 11 moving lever 15
is returned to its initial position. Therefore, this embodiment has the advantage that the handle switch 109 is not required.

In each of the embodiments described above, the drive lever 15 was rotated in the clockwise and counterclockwise directions by the forward and reverse rotation of the motor 104, but the motor 104 was rotated only in one direction, and the cam, link, etc. The motor 104 and the drive lever 15 are used to convert rotational motion into rocking motion.
The drive lever 15 may be driven clockwise and counterclockwise by providing the drive lever 15 between the drive lever 15 and the drive lever 15.

According to the present invention, as described in detail of the G1 invention, when the door opening operation is performed immediately after the door closing operation, the detection output signal of the detection means for detecting that the door opening operation is performed is used. Since the pushing member that pushes the latch member is configured to return to the initial position, even if the door opening operation is performed immediately after the door closing operation, the subsequent door closing operation does not require operating a separate member as in the conventional case. It can be done without.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the control circuit in the present invention,
FIG. 2 is a perspective view showing an embodiment of the latch device, FIG. 3 is a diagram illustrating the state of engagement between the latch plate and the striker, and FIG. 4 is a perspective view showing an embodiment of the motor and drive system. FIG. 5 is a perspective view of the side of the sliding door, FIG. 6(a) is a time chart for explaining the operation of the timer IC circuit, FIG. 6(b) is a time chart for explaining the operation of the control circuit, and FIG. FIG. 7 is a circuit diagram showing a second embodiment of the control circuit, and FIG. 8 is a diagram explaining the latch operation in the conventional device. 12: Latch plate 13 Striker 14: Pole 15: Drive lever 16.19: Cable 17: Fan-shaped drive gear 3o: Vehicle body 40 Ni-Ride door 50: Inner handle 51: Outer handle 100: Control circuit 104: Motor 105: Full lock switch 106: Neutral switch 107; Half lock switch R1; Forward rotation relay R2: Reverse rotation I-TC: I
C circuit

Claims (1)

[Scope of Claims] The door is configured to be lockable by engaging a latch member pivotably mounted on the door side with a striker fixed to the vehicle body, and the rotation of the latch member towards the unlocking side is inhibited. In order to do this, a restraining member that can engage with the latch member and a pushing member that pushes the latch member toward the lock side are pivotally attached to the door side, and the restraining member restrains rotation of the latch member during a door opening operation. When a half-locked state is detected in which the restraining member is engaged with the latch member at the first engaging position during a door closing operation, the pushing Driving the member from an initial position toward a full lock position to achieve a full lock state in which the restraining member and the latch member are engaged at a second engagement position, and detecting that the full lock state has been reached. In a locking device for an automobile door, the locking device for an automobile door is provided with a drive control means on the door side that drives the pushing member in the direction of the initial position and stops driving the pushing member when the pushing member reaches the initial position. A detection means for detecting a door opening operation is provided, and the drive control means is configured to move the pushing member to an initial position based on a logical sum signal of a detection signal indicating that the door is in the fully locked state and a detection signal of the detection means. A locking device for an automobile door, characterized in that it is configured to be driven in a direction.