JP2014015833A - Drive unit for vehicular opening-closing body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive unit for vehicular opening-closing body, the unit being capable of preventing easy intrusion of foreign materials (rain, snow, dust and the like) into a trunk opening even in a case some material is caught in a trunk lid at the trunk opening.SOLUTION: A drive unit includes: a closer mechanism for retaining an opening-closing body respectively at a half latch position and a full close position, the body opening and closing an opening of a vehicle body; and drive means for driving the opening-closing body between the half latch position and full close position via a closer mechanism. In a case where an event of some material being caught between the opening-closing body and a vehicle body is detected when the opening-closing body is closed from the half latch position to full close position by the drive means, the drive means is reverse-driven to open the opening-closing body to the half latch position, and the drive means is stopped while the closer mechanism retains the opening-closing body at the half latch position. Drive control means continues stopping of the drive means until receiving an opening instruction signal for opening the opening-closing body from the half latch position to the full open position.

Description

  The present invention relates to a drive device that electrically drives a vehicle opening / closing body such as a trunk lid, a back door, and a swing door.

  As an electric drive device for a vehicle opening / closing body, for example, a power trunk lid that opens and closes a trunk lid that opens and closes a trunk opening of a vehicle body between a fully open position, a half latch position, and a fully closed position is known. The power trunk lid is held in a half latch position and a fully closed position by a closer mechanism including a lock mechanism and a striker provided on one and the other of the trunk lid and the vehicle body, respectively. The closer mechanism is driven between a half latch position and a fully closed position by a closer drive motor that is separate from the trunk drive motor that opens and closes the trunk lid.

  In such a power trunk lid, for example, if the closer mechanism cannot be retracted from the half-latch position to the fully closed position within a predetermined time, it is determined that the trunk lid has been caught, and the closer mechanism is released to remove the trunk lid. What is equipped with the pinching prevention mechanism opened to a fully open position is known (patent document 1).

JP 2007-285089 A

  However, if the closer mechanism is released each time the trunk lid is caught and the trunk lid is opened to the fully open position, foreign matter (rain, snow, dust, etc.) may enter the trunk opening. This problem is common not only to the power trunk lid but also to other vehicle opening / closing bodies such as a back door and a swing door.

  The present invention has been made on the basis of the above problem awareness, and even when the trunk lid is caught, foreign matter (rain, snow, dust, etc.) can be easily mixed in the trunk opening. It is an object of the present invention to provide a drive device for a vehicle opening / closing body.

  The opening / closing body drive device for a vehicle according to the present invention includes: an opening / closing body that opens and closes an opening of a vehicle body; a closer mechanism that holds the opening / closing body in a half latch position and a fully closed position; and the opening / closing body via the closer mechanism. Driving means for driving the door between the half latch position and the fully closed position; when the opening and closing body is closed from the half latch position to the fully closed position by the driving means, it is detected that the opening and closing body and the vehicle body are caught. A pinching detection means; and when pinching is detected by the pinching detection means, the drive means is driven in reverse to open the opening / closing body to the half latch position, and the closing mechanism holds the opening / closing body at the half latch position. Drive control means for stopping driving of the drive means, and the drive control means, after the sandwiching, opens and closes the open / close body. From Chi position to receive the open command signal to open toward the fully open position, to stop driving the driving means, it is characterized in that.

  According to the present invention, there is provided a drive device for a vehicle opening / closing body in which foreign matter (rain, snow, dust, etc.) is not easily mixed in a trunk opening even when the trunk lid is caught. be able to.

It is a perspective view which shows the structure in the fully open position of the power trunk lid of this invention. It is operation | movement explanatory drawing of a closer mechanism. It is a functional block diagram which shows the drive device of the power trunk lid of this invention. It is a flowchart which shows the control by the motor rotation control part at the time of closing a trunk lid from a full open position.

  An embodiment in which the drive device for a vehicle opening / closing body of the present invention is applied to a power trunk lid 1 will be described with reference to FIGS. 1 to 4. The power trunk lid 1 can open and close a trunk opening (opening) 3 of a vehicle body 2 by a trunk lid (opening / closing body) 4. That is, the trunk lid 4 is pivotally attached to the vehicle body 2 by a pair of hinge members 5 provided in the left-right direction of the vehicle, and can be opened and closed around the pivot 5a of the hinge member 5. One end and the other end of the telescopic drive unit 6 are pivotally attached to the wall surface of the opening 3 of the vehicle body 2 and the hinge member 5 of the trunk lid 4. The telescopic drive unit 6 includes a trunk drive motor M1, and expands and contracts according to the forward and reverse rotation of the trunk drive motor M1 to open and close the trunk lid 4. In the left-right direction of the opening 3 of the vehicle body 2, a pair of stopper members 7 that are in contact with the hinge member 5 at the fully open position of the trunk lid 4 are provided in correspondence with the hinge member 5 of the trunk lid 4. . A weather strip 8 that elastically deforms between the vehicle body 2 and the trunk lid 4 at the fully closed position of the trunk lid 4 to prevent water from entering the opening 3 is provided on the entire periphery of the edge of the opening 3. ing.

  The trunk lid 4 is provided with a lock mechanism 10, and a striker 20 is provided on the wall surface of the opening 3 of the vehicle body 2. As shown in FIG. 2, the lock mechanism 10 includes a hook 12 coupled to the rotary shaft member 11 and a ratchet 14 that is rotatable about the rotary shaft member 13. The hook 12 has a rotation support hole 12a that fits in the rotation shaft member 11 so as not to be relatively rotatable, a striker holding groove 12b, a full latch locking portion 12c, and a half latch locking portion 12d. The hook 12 is urged to rotate clockwise in FIG. 2 (unlock direction) by a spring (not shown). The ratchet 14 includes a lock portion 14a that can be engaged with and disengaged from the full latch latching portion 12c and the half latch latching portion 12d of the hook 12, and a counterclockwise direction (engaged with the hook 12) of FIG. In the direction of joining). The hook 12, ratchet 14, and striker 20 described above constitute a closer mechanism C that holds the trunk lid 4 in the half latch position and the fully closed position, respectively.

  The closer driving mechanism C is provided with a closer driving motor M2 (driving means) for driving the hook 12 to rotate in the forward and reverse directions. When the closer driving motor M2 rotates in the forward and reverse directions, the closer mechanism C is moved to the half latch position. And between the fully closed positions. The closer drive motor M2 rotates the ratchet 14 at a predetermined timing.

When the trunk lid 4 is in the fully closed position, the closer mechanism C is engaged with the striker holding groove 12b of the striker 20 and the hook 12, and the full latch locking portion 12c of the hook 12 and the lock portion 14a of the ratchet 14 are engaged. Is in a fully latched state.
When the closer drive motor M2 is rotated to open the trunk lid 4 from the fully closed position, the ratchet 14 rotates in the clockwise direction in FIG. 2, the engagement between the full latch locking portion 12c and the lock portion 14a is released, and the hook 12 Is slightly rotated clockwise by an urging force of a spring (not shown), and the lock portion 14a and the half latch engaging portion 12d are engaged. This position is the half latch position (half latch state) of the trunk lid 4 by the closer mechanism C.
When the trunk lid 4 is opened from the half latch position, the ratchet 14 rotates clockwise in FIG. 2, the engagement between the lock portion 14a and the half latch engagement portion 12d is released, and the hook 12 is a spring (not shown). The striker 20 is further rotated clockwise by the urging force, and the striker 20 is detached from the striker holding groove 12b of the hook 12. That is, the closer mechanism C is released.

  The driving operation of the closer mechanism C, that is, the rotating operation of the closer driving motor M <b> 2 is controlled by a motor rotation control unit (drive control means) 30 provided in the opening 3 of the vehicle body 2.

FIG. 3 is a functional block diagram showing a drive device for the power trunk lid 1 with the motor rotation control unit 30 as the center. The receiving unit 40 receives the trunk opening / closing operation signal wirelessly transmitted from the wireless remote controller 40 a formed integrally with the key, and sends the trunk opening / closing operation signal to the motor rotation control unit 30. The trunk opening / closing operation switch unit 41 is provided in the passenger compartment or the trunk lid 4, and a trunk opening / closing operation signal is sent to the motor rotation control unit 30 by the operation of the switch unit 41.
The half-latch position detection unit 42 detects that the closer mechanism C has reached the half-latch position (the lock part 14a and the half-latch locking part 12d are engaged), and rotates the half-latch position arrival detection signal. The data is sent to the control unit 30.
When the closer mechanism C reaches the half latch position when the trunk lid 4 is closed, the pinching detection unit 43 detects a pulse generated by the rotation of the closer driving motor M2, and the trunk lid 4 receives the change in the pulse width. Detect that pinching has occurred. Then, the pinch detection unit 43 sends a pinch detection signal to the motor rotation control unit 30.
The fully closed position detection unit 44 detects that the closer mechanism C has reached the fully closed position when the trunk lid 4 is closed (the lock part 14a and the full latch engaging part 12c are engaged), and the fully closed position is detected. An arrival detection signal is sent to the motor rotation control unit 30.

The motor rotation control unit 30 controls the rotation operation of the trunk drive motor M1 and the closer drive motor M2 based on the trunk opening / closing operation signal received from the receiving unit 40 or the trunk opening / closing operation switch unit 41, thereby opening / closing the trunk lid 4. Control the behavior.
More specifically, when the trunk lid 4 is in the fully closed position and receives a trunk opening signal from the receiving unit 40 or the trunk opening / closing operation switch unit 41, the motor rotation control unit 30 rotates the closer driving motor M2 and closes the closer. The mechanism C is driven from the fully closed position to the half latch position. As a result, when the trunk lid 4 is opened to the half latch position and the closer mechanism C is released, the motor rotation control unit 30 stops the rotation of the closer driving motor M2 and rotates the trunk driving motor M1, thereby causing the trunk lid 4 to move. Open to the fully open position.

  The control by the motor rotation control unit 30 when the trunk lid 4 is closed from the fully open position will be described with reference to FIG.

  When the trunk lid 4 is in the fully open position and receives the trunk close signal from the receiving unit 40 or the trunk opening / closing operation switch unit 41, the motor rotation control unit 30 rotates the trunk drive motor M1 to place the trunk lid 4 in the half latch position. Close until. When the trunk lid 4 is closed to the half latch position, the half latch position detection unit 42 detects that the closer mechanism C has reached the half latch position (the lock portion 14a and the half latch engagement portion 12d are engaged). Then, a half latch position arrival detection signal is sent to the motor rotation control unit 30. Upon receiving the half latch position arrival detection signal, the motor rotation control unit 30 stops the rotation of the trunk drive motor M1, rotates the closer drive motor M2, and drives the closer mechanism C from the half latch position toward the fully closed position. Start (S1).

  When the closer mechanism C reaches the fully closed position without being caught in the trunk lid 4 (S2; NO, S3; YES), the motor rotation control unit 30 slightly reverses the closer drive motor M2 to close the closer mechanism C. Is set to the correct fully closed position (S4, S5; YES), the rotation of the closer drive motor M2 is completely stopped (S6). Here, the correct fully closed position of the closer mechanism C is a full latch in which the striker 20 and the striker holding groove 12b of the hook 12 are engaged, and the full latch engaging portion 12c of the hook 12 and the lock portion 14a of the ratchet 14 are engaged. Means the state (open standby position).

  On the other hand, when pinching is detected in the trunk lid 4 (S2; YES), the pinching detection unit 43 sends a pinching detection signal to the motor rotation control unit 30. Receiving the pinching detection signal, the motor rotation control unit 30 drives the closer drive motor M2 in the reverse direction to drive the closer mechanism C to the half latch position (S7). As a result, the closer mechanism C engages with the lock portion 14a of the ratchet 14 and the half latch engaging portion 12d of the hook 12 to be in a half latch state, and is in the correct half latch position (open standby position) (S8; YES). . Then, the motor rotation control unit 30 completely stops the rotation of the closer drive motor M2 in a state where the closer mechanism C is held at the half latch position (S9).

  The motor rotation control unit 30 stops driving the closer drive motor M2 until it receives a fully closed position arrival detection signal from the fully closed position detection unit 44 or until it receives a trunk open signal from the receiving unit 40 or the trunk opening / closing operation switch unit 41. (Fail mode)

  As described above, according to the present embodiment, when pinching is detected by the pinch detection unit 43, the motor rotation control unit 30 drives the closer drive motor M2 in the reverse direction so that the closer mechanism C (trunk lid 4) is driven. Since the closer drive motor M2 is driven and stopped in a state in which it is driven to the half latch position and the closer mechanism C (trunk lid 4) is held in the half latch position, the trunk lid 4 does not open to the fully open position. That is, even when the trunk lid 4 is caught, foreign matter (rain, snow, dust, etc.) is not easily mixed into the trunk opening.

  In the above embodiment, the trunk drive motor M1 is used to drive the trunk lid 4 between the fully open position and the half latch position. However, the trunk drive motor M1 is not used and the fully open position is set. The present invention is also applicable when the trunk lid 4 is manually opened and closed between the half latch positions.

  In the above embodiment, the drive device for a vehicle opening / closing body of the present invention has been described as an example applied to the power trunk lid 1, but the drive device for the vehicle opening / closing body of the present invention includes a back door, a swing It can also be applied to other opening / closing bodies such as doors.

1 Power trunk lid 2 Vehicle body 3 Trunk opening (opening)
4 Trunk lid (opening / closing body)
5 Hinge member 5a Pivot 6 Telescopic drive unit 7 Stopper member 8 Weather strip 10 Lock mechanism 11 Rotating shaft member 12 Hook 12a Rotation support hole 12b Striker holding groove 12c Full latch locking portion 12d Half latch locking portion 13 Rotating shaft member 14 Ratchet 14a Lock part 20 Striker 30 Motor rotation control part (drive control means)
40 receiver 40a wireless remote control 41 trunk opening / closing operation switch 42 half latch position detector 43 pinching detector 44 fully closed position detector C closer mechanism M1 trunk drive motor M2 closer drive motor (drive means)

Claims (1)

An opening and closing body for opening and closing the opening of the vehicle body;
A closer mechanism for holding the opening and closing body in a half-latch position and a fully-closed position;
Drive means for driving the opening / closing body between the half latch position and the fully closed position via the closer mechanism;
When the opening / closing body is closed from the half latch position to the fully closed position by the driving means, pinching detection means for detecting that the opening / closing body and the vehicle body are pinched; and when pinching is detected by the pinching detection means Drive control means for driving the drive means to stop in a state where the drive means is driven in reverse to open the open / close body to a half latch position and the closer mechanism is held at the half latch position by the closer mechanism. ,
The drive control means stops driving the drive means until receiving an opening instruction signal for opening the open / close body from the half latch position toward the fully open position after the pinching. Control device.

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