JPH082381Y2 - Automatic door closing device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a door of a vehicle, etc., when the door is closed to a half-latch position where a latch in the door lock and a striker on the vehicle body are barely engaged, The present invention relates to an automatic door closing device that surely closes a door to a fully closed position by forcibly rotating a latch.

[Conventional technology]

For example, Japanese Patent Application No. 1-59 related to the applicant's utility model registration application
In the specification and drawings attached to the application for No. 120, a door moving device provided on the vehicle body and forcibly moving the door in the closing direction and the opening direction, and provided on the door, and the door is predetermined When the door lock is closed to the half-latch position, the door lock latch is forcibly rotated to close the door to the fully closed position. And a lock release device for unlocking the door, which is provided near the driver's seat or near the door entrance, and can be moved in the direction to close the door by driving the door moving device by the door closing operation,
Further, there is disclosed an automatic door opening / closing device including an operating device that operates a door moving device in a door opening direction after a lock releasing device is unlocked by a door opening operation.

In this way, in addition to the door moving device, the closure is further provided such that when the door is closed, the door seal or the like is provided from the half-latch position, which is a so-called half-door state, to the fully-closed position. This is because a large resistance force due to acts on the door, and it is difficult to completely close the door only with the door moving device.

The closure is configured such that the latch pivoting means for forcibly pivoting the latch by detecting that the door lock latch reaches the half-latch position where it barely engages with the striker by the motor. When the latch reaches the full latch position where the latch is completely engaged with the striker by the normal rotation of the motor, the latch is fully engaged with the striker. When the rotating means is rotated from the operating position to the original position and the latch rotating means is returned to the original position, the return confirmation switch detects that and the reverse rotation of the motor is stopped. ing.

As the return confirmation switch, a limit switch is used which is brought into contact with and actuated when the latch turning means returns to the original position.

[Problems to be solved by the device]

In the conventional device as described above, if the recovery confirmation switch fails or malfunctions, the motor of the closure does not stop, current continues to flow, and the motor may burn.

An object of the present invention is to provide an automatic door closing device that solves the above problems of the conventional technology.

[Means for solving the problem]

In order to achieve the above object, the automatic door closing device of the present invention is provided on a door, and the latch rotation means is moved from the original position to the operating position by the forward rotation of the motor, so that the latch of the door lock is opened. The door is forcibly rotated in the full-latch direction to close the door from a predetermined half-latch position to a fully-closed position, and the latch rotating means is returned to the original position by the reverse rotation of the motor, and the door. The latch position detection switch that detects when the lock latch reaches the half-latch position that barely engages the striker on the vehicle body side and the full-latch position that completely engages the striker, and the latch rotation means in the closure are in the original position. Return confirmation switch that operates when the switch is in the position, the closure, the latch position detection switch, and the return confirmation switch. And electrically connected to a power source, and when the latch position detection switch detects that the latch has reached the half-latch position, the motor of the closure is normally rotated, and the latch has reached the full-latch position. In the automatic door closing device, the motor of the closure is rotated in the reverse direction, and the control device controls the closure to stop the reverse rotation of the motor when the return confirmation switch is actuated. In addition, since the latch position detection switch detects that the latch has reached the half-latch position and the return confirmation switch does not operate within a preset time, the motor is reversely rotated for a predetermined time. It is characterized in that a confirmation timer is provided.

[Action]

During normal operation, when the latch position detection switch detects that the latch has reached the half-latch position, the confirmation timer starts timing, and at the same time, the motor is rotated in the forward direction, which causes the latch rotation means to start. The return confirmation switch is moved slightly from the position to the operating position, and the return confirmation switch is immediately brought into the operating state from the inoperative state.

In this case, after the lapse of the set time of the confirmation timer, the motor continues to rotate in the forward direction and the latch rotating means is moved toward the operating position, whereby the latch of the door lock is forcibly rotated toward the full latch position. To be made.

When the latch turning means moves to the operating position and the latch reaches the full latch position, the latch position detection switch detects that and the motor is rotated in the reverse direction, and the latch turning means moves from the operating position to the original position. To be made.

When the latch rotating means is returned to the original position, the return confirmation switch is deactivated, whereby the reverse rotation of the motor is stopped and the latch rotating means is stopped at the original position.

If the recovery confirmation switch does not operate normally due to failure or wire breakage, after the latch position detection switch detects that the latch has reached the half-latch position, the motor rotates forward and the latch rotation means Even if the return confirmation switch is moved from the original position toward the operating position, the return confirmation switch is not activated during the setting time of the confirmation timer.

In such an abnormality, after the set time of the confirmation timer elapses, the confirmation timer is actuated to reverse the motor for a predetermined time, and the latch rotation means is forcibly returned from the middle of the operation to the original position. To be made.

〔Example〕

Hereinafter, an embodiment in which the present invention is applied to an automatic opening and closing device for a sliding door of an automobile will be described with reference to the accompanying drawings.

Although the present invention relates to a device for automatically closing a door, this embodiment also has a function of automatically opening the door.

In FIG. 1, (11) is a car body, and (12) is
A slide door that is moved parallel to the outside of the side surface of the vehicle body (11) by an appropriate guide means (not shown), then opens rearward in parallel with the side surface of the vehicle body (11) and closes in the opposite direction. (Hereinafter simply referred to as a door).

A door moving device (A) for forcibly opening and closing the door (12) from the fully closed position to the fully open position and vice versa is provided on the lower surface of the floor of the vehicle body (11).

The door moving device (A) has a bracket (13) fixed to the inner surface of the front lower part of the door (12), an intermediate portion of which is fixed, and a part of the door moving device reciprocates in parallel with the movement path of the door (12). Both ends of the wire (14), which was set to
The winding drum (15) is normally and reversely rotated by a motor (16) via a speed reducer (17) so that the wire (14) is reciprocally circulated and the door (12) is wound around. Can be opened and closed as described above.

The door moving device (A) is provided in the vehicle body (11) and is a normally closed fully closed member that is opened by contacting the front end face of the door (12) when the door (12) is closed to the fully closed position. Switch (1
8) and a normally open full-open switch provided on the vehicle body (11) and adapted to come into contact with the rear end of the bracket (13) of the door (12) and close when the door (12) is opened to the fully open position. (19) and are provided.

The door (12) can also be opened and closed manually. That is, the wire (14) integrally moves following the opening / closing movement of the door (12), and accordingly, the wire (14) is composed of the winding drum (15), the spur gear train, and the like, and is reversibly rotatable. The door (12) and the motor (16) are connected so that the motor (16) rotates in the reverse direction via the speed reducer (17).

In the vehicle body (11), the door (12) is at a position slightly opened from a half latch position to be described later, and a predetermined power supply start position at which a hand cannot be inserted between the front end of the door (12) and the vehicle body. A power supply start switch (20) is provided which abuts on the bracket (13) and closes instantaneously only when the vehicle passes in the closing direction.

(B) is near the driver's seat of the vehicle body (11) or door (1
2) With an operating device installed near the doorway that is opened and closed by both, or both, push the seesaw-type push button (21) from the neutral position to the open and close doors to open the door with a common movable contact. The door operation switch (22) and the door closing operation switch (23) can be selectively closed.

 (24) is a battery as a power source.

(C) is the vehicle body (11) facing the front end surface of the door (12)
Of the contact element (25), which is a pair of connector elements, which are respectively provided so as to be retractable and retractable between the facing surface of the door and the front end surface of the door (12).
a) (25b) (26a) (26b), and when the door (12) is between the substantially same position as the power feeding position and the fully closed position, the contacts (25a) and (26a) facing each other, (25b)
And (26b) contact each other, and the car body (11) to the door (12)
It is a power supply connector that enables power supply to.

The contacts (25a) (25b) on the vehicle body (11) side of the power feeding connector (C) and other electric elements on the vehicle body (11) side, for example, the motor (16) in the door moving device (A), Close switch (18), fully open switch (19), operating device (B), power supply start switch (20), battery (2)
4) is connected to the vehicle body side control device (40) via an appropriate wiring cord (39) (partially omitted).

Inside the door (12), the door (12) has a door lock (27).
When a latch (not shown) in the inside and a striker (not shown) fixed to the vehicle body (11) side barely engage with each other, when closed to a half-latch position which is a so-called half-door state,
The door (1
2) It is linked to the closure (D) that closes the door to the fully closed position and the open lever (28) in the door lock (27). By rotating this open lever in the releasing direction, the latch is restrained. Unlock the door (1
2) A solenoid drive-a known spring return type actuator (E) is provided which allows the opening of 2).

The closure (D) is the same as that disclosed in the specification and the drawings attached to the application for the patent application No. 63-219632, and its main structure will be briefly described below. D) is a sector gear (32) that meshes with the pinion (31) through a speed reducer (30) and a pinion (31) fixedly fitted to the output shaft of the speed reducer (30) by rotating the motor (29) in the normal direction. Is rotated counterclockwise in FIG. 1 from a predetermined original position to an operating position, and a closing lever (34) linked to the sector gear (32) is rotated in a required direction, and By the rotation of the close lever (34), the arm portion (35) of the door lock (27) extending above the latch is rotated, and the latch is rotated to the full latch position where it is completely meshed with the striker, Take the door (12) half It can be forcibly closed from the latched position to the fully closed position.

When the motor (29) is reversed, the sector gear (32) and the close lever (34) are returned to their original positions and rotated,
The close lever (34) stops at a position that does not hinder the rotation of the arm portion (35) of the latch.

In the above configuration, the sector gear (32), the cable (33), and the close lever (34) form a latch rotation means.

When the open lever (28) of the door lock (27) is rotated in the releasing direction, the (36) is brought into contact with the open lever (28) to be actuated so that the door lock (27) is in the proper position. And a latch position detection switch for detecting that the latch has reached a half-latch position that barely engages the striker and a full-latch position that completely engages the striker when the door (12) is closed.

That is, when closing the door (12), just before the door (12) reaches the half-latch position, the open lever (28)
And a pole (not shown) abut on the tip of one leg of the bifurcated latch, and the pole and open lever (28)
And are slightly rotated in the releasing direction, and immediately before the door (12) reaches the fully closed position, the pole comes into contact with the tip of the other leg of the latch, and the pole and the open lever (28) are separated. It can be slightly rotated in the release direction.

The latch position detection switch (36) detects that the latch has reached the half-latch position by detecting the first rotation of the open lever (28) in the releasing direction when closing the door (12). Detected, and second
By detecting the rotation of the open lever (28) in the releasing direction for the second time, it is possible to detect that the latch has reached the full latch position.

(38) is a return confirmation switch for detecting that the sector gear (32) which is a part of the latch rotating means has returned to the original position. When the sector gear (32) is stopped at the original position, The sector gear (32) is brought into contact with the sector gear (32) and opened, and when the sector gear (32) moves away from the original position, the sector gear (32) moves away from the sector gear (32) and closes.

Motor (29) in the closure (D), latch position detection switch (36), return confirmation switch (38), actuator (E) and feed connector (C) on the door (12) side contact (26a) (26b) Is connected to the door side control device (41) via an appropriate wiring cord (39).

FIG. 2 is a block diagram showing, of the control device (43) of the automatic door opening / closing device shown in FIG. 1, only those relevant to the control of the closure (D).

That is, the control device for the door moving device (A) and the control device for the actuator (E) are not shown.

In FIG. 2, the same reference numerals as those in FIG. 1 are merely electrical representations of the above-mentioned members.

The control device (43) includes a vehicle body side control device (40) and a door side control device (41).

The vehicle body side control device (40) is connected to the closure power feeding circuit (44) connected to the vehicle body side contacts (25a) (25b) of the power feeding connector (C) and the battery (24), and at the same time, the closure power feeding is performed. A circuit (44) and a door closing power supply circuit (45) connected to the power supply start switch (20).

The door closing power supply circuit (45) includes a timer (T1), and the operation of the power supply start switch (20) when the door (12) is closed to the power supply start position causes the timer (T
Power is supplied to the closure power supply circuit (44) until the preset time in 1) elapses.

The closure feeding circuit (44) is the closing feeding circuit (45).
When the power is supplied from the power supply connector (C), the contact (25a) (25b) of the power supply connector (C) has a polarity for normal operation of the closure (D), for example, the contact (25a) is positive and the contact (25b) is negative. It is configured to supply power with the polarity as described below. Specifically, the circuit configuration is as disclosed in the specification and drawings attached to the above-mentioned Japanese Patent Application No. 1-59120. Is good.

The door side control device (41) includes a closure control circuit (47) connected to the door side contacts (26a) (26b), the latch position detection switch (36) and the return confirmation switch (38) in the power supply connector (C). ) And a motor (29) of this and the closure (D), and a normal rotation circuit (48) for supplying a current for normal rotation to the motor (39), as well as reverse rotation to the motor (39). And a reversing circuit (49) for supplying a current for supplying a current for

Each of these circuits (47) (48) (49) is
A timer (T2) (T3) and a confirmation timer, which will be described later, have the same circuit configuration as disclosed as the door-side control device in the specification and drawings attached to the above-mentioned application No. 1-59120. (T4) and a timer (T5) may be added.

In the closure control circuit (47), the door (12) is closed to a required position, and the door-side contacts (26a) (26b) of the power supply connector (C) come into contact with the vehicle-body-side contacts (25a) (25b). And the power supply start switch (20) is activated,
As described above, the contact (25a) is positive and the contact (2a
Door (12) after power is supplied so that 5b) becomes negative
Reaches the half-latch position and the latch position detection switch (36) operates for the first time, power is supplied to the forward rotation circuit (48) to rotate the motor (29) forward, and then the door (12).
Is at the fully closed position, that is, when the latch reaches the full latch position and the latch position detection switch (36) operates for the second time, almost simultaneously with stopping the power supply to the forward rotation circuit (48), the reverse rotation circuit (49 ) To rotate the motor (29) in the reverse direction, and when the return confirmation switch (38) detects that the sector gear (32) has returned to its original position, power is supplied to the reverse rotation circuit (49). Stopping motors (29)
To stop the reversal of.

In the closure control circuit (47), when the latch position detection switch (36) does not operate the second time within a preset time after the latch position detection switch (36) operates the first time. The timer (T2) for stopping the forward rotation of the motor (29) and the reset confirmation switch within the preset time after the second operation of the latch position detection switch (36). A timer (T3) is provided for stopping the reverse rotation of the motor (29) when the (38) does not operate.

In addition, the closure control circuit (47) does not operate the return confirmation switch (38) within a preset time after the first operation of the latch position detection switch (36).
That is, a confirmation timer (T4) is provided which activates the timer (T5) when it is not closed and reverses the motor (29) for the set time of the timer (T5).

The setting time of the confirmation timer (T4) is longer than the time from the first operation of the latch position detection switch (36) to the operation of the return confirmation switch (38) during normal operation, and the latch position detection It is preferable to set an appropriate time shorter than the time from the first operation of the switch (36) to the second operation thereof.

Further, the timer (T5) is set to a time sufficient to reliably return the closure (D) from the position midway from the original position to the operating position to the original position by the reverse rotation of the motor (29). Is good.

Next, with reference to the flow chart shown in FIG. 3, the operation relating to the closure (D) in the above embodiment will be described. It should be noted that other configurations, such as the operation of the door moving device (A) and the actuator (E), are not directly related to the present invention, and thus the description thereof is omitted.

The door closing operation switch (23) of the operation device (B) is operated to move the door (12) in the closing direction by the door moving device (A) (or manually) (step S).
1).

On the way, the door-side contacts (26a) (26b) come into contact with the vehicle body-side contacts (25a) (25b), and the door (12) reaches the power supply start position, and the power supply start switch (20) When is activated (ON) (step S2), the timer (T1) is activated, that is, clocking is started (step S3), and power supply to the door (12) is started (step S4).

Next, when the door (12) reaches the half-latch position and the latch position detection switch (36) operates for the first time (ON) (step S5), the timer (T2) and the confirmation timer (T
4) starts operating (steps S6, S7), motor (29)
Is rotated normally (step S8).

Then, by the operation of the closure (D), the latch is forcibly rotated in the full latch direction, and the door (12) is moved toward the fully closed position by a strong force.

During normal operation, immediately after the operation of the closure (D), the sector gear (32) is rotated from the original position toward the operating position, and when the sector gear (32) separates from the original position,
The return confirmation switch (38) is operated (ON) (step S9).

If the operation of the return confirmation switch (38) is performed within the set time of the confirmation timer (T4), the motor (29) continues to rotate normally.

During the forward rotation of the motor (29), the latch reached the full latch position within the set time of the timer (T2) (see the door (1
2) has reached the fully closed position) and the latch position detection switch (3
When 6) performs the second operation (ON) (step S10),
The timer (T3) starts operating (step S11), and the motor (29) is rotated at the same time as the normal rotation is completed (step S11).
S12).

Then, the sector gear (32) and the close lever (34), which are the latch rotating means, are returned and rotated toward the original position.

After that, within the set time of the timer (T3), when the sector gear (32) reaches the original position and the return confirmation switch (38) becomes inoperative (OFF) (step S13), the reverse rotation of the motor (29) is normal. Are stopped (step S14).

After that, when the set time of the timer (T3) has elapsed (step S15), the power supply to the door (12) is stopped (step S16).

In step S9, in the unlikely event of a return confirmation switch (38)
Does not operate (ON) due to a failure or disconnection, and the set time of the confirmation timer (T4) has elapsed (step S17),
When the timer (T5) is operated (step S18), the motor (29) stops normal rotation and is rotated in reverse (step S19), and when the set time of the timer (T5) has elapsed (step S20), the motor ( The reverse rotation of 29) is stopped (step S21).

As a result, the closure (D) is returned to the original position on the way without forcibly moving the latch to the full-latch position, and the door is stopped in the half-latch position. It is possible to know that some failure has occurred in the motor, and the recovery confirmation switch (38) continues to be used with the failure, and the motor (29)
It is possible to prevent a secondary failure such as image sticking from occurring.

After the reverse rotation of the motor (29) is stopped in step S21, when the set time of the timer (T1) has elapsed (step S15), the power supply to the door is stopped (step S15).
16).

In step S10, the latch position detection switch (3
If 6) does not operate (ON) for the second time and the set time of the timer (T2) has elapsed (step S22), the process returns to step S11, the timer (T3) operates, and the motor (29) turns on. The operation is reversed (step S12), and the same operation as described above is performed.

Further, the return confirmation switch (38) operates normally in step S9, and then, for example, the sector gear (3
If it is not disabled (OFF) in step S13 due to an accident such as a foreign object being caught between 2) and the pinion (31), reverse rotation of the motor (29) is started (step S12).
When the set time of the timer (T3) has passed from (Step
S23), the reverse rotation of the motor (29) is stopped (step S24).

Therefore, the motor (29) does not continue to rotate in the reverse direction.

In this embodiment, in addition to the confirmation timer (T4) and its associated timer (T5), the timer (T1) that limits the power supply time to the door (12) and the latch position detection switch (36) are activated. Since there is a timer (T2) for safety in case of not doing so, and a timer (T3) for safety in case the return confirmation switch (38) does not return to the inoperative state, etc. Triple safe.

[Effect of device]

As is apparent from the above, according to the present invention, if the reset confirmation switch should fail or does not operate for some reason, the confirmation timer will not operate until the set time of the confirmation timer elapses at the initial stage of closure operation. In the meantime, after detecting that the return confirmation switch does not operate, the motor of the closure is reversely rotated for a certain period of time, the latch circuit means is returned to the original position, and then the motor is stopped. It rotates to a position close to it and stops, after that, the latch rotation means becomes immovable, and the latch is blocked by the latch rotation means, and the door cannot be opened even by manual operation, or it returns. It is safe to continue to use it without noticing that the confirmation switch has failed, and to prevent the risk of burn-in of the motor.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a main part of an automobile equipped with an automatic door opening / closing device to which the present invention is applied, FIG. 2 is a block diagram showing a configuration of an electric circuit of a control device, and FIG. It is a flowchart which shows a state. (D) Closure (11) Vehicle body, (12) Sliding door (door) (20) Power supply start switch, (29) Motor (32) Sector gear (latch rotation means) (34) Close lever (latch rotation means) (36) Latch position detection switch, (38) Return confirmation switch (40) Vehicle side control device, (41) Door side control device (43) Control device, (44) Closure power supply circuit (45) Door closing power supply circuit, ( 47) Closure control circuit (48) Forward rotation circuit, (49) Reverse rotation circuit (T1) (T2) (T3) (T5) timer, (T4) confirmation timer

Claims (1)

[Scope of utility model registration request] 1. A door lock is provided in a door, and a latch rotation means is moved from an original position to an operating position by a forward rotation of a motor to forcibly rotate a latch of a door lock in a full latch direction. Closing the door from the predetermined half-latch position to the fully-closed position and reversing the motor to return the latch rotating means to the original position, and the door lock latch barely interact with the striker on the vehicle body side. A latch position detection switch that detects when the half-latch position that engages and the full-latch position that completely engages the striker are reached, and the latch rotation means in the closure is operated by moving away from the original position and returns to the original position. Reset confirmation switch that becomes inoperable by doing so, the closure, latch position detection switch, and return confirmation switch. And electrically connected to a power source, and when the latch position detection switch detects that the latch has reached the half-latch position, the motor of the closure is normally rotated, and the latch has reached the full-latch position. In the automatic door closing device, the motor of the closure is rotated in the reverse direction, and the return confirmation switch becomes inactive after that, and the control device controls the closure to stop the reverse rotation of the motor. In the control device, when the latch position detection switch detects that the latch has reached the half-latch position, the return confirmation switch does not operate within a preset time, so that the motor is operated for a predetermined time. An automatic door closing device, which is provided with a confirmation timer adapted to be reversed.