JP2007309021A - Drive control device of opening/closing body for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drive control device of an opening/closing body for a vehicle which suppresses the unnatural behavior of the opening/closing body as a whole. <P>SOLUTION: A control unit closes a trunk lid 13 by driving a drive unit motor in a connecting state of power transmission through a drive unit clutch of a drive unit 21. The control unit stops a drive force by the drive unit motor when detecting a latch 33 engaged with a striker 32 to be at a half latch position caused by the closing of the trunk lid 13 through the drive unit 21, and allows the latch 33 to be rotated to a full latch position by driving the latch 33 with a closer motor 34. The control unit controls the drive unit clutch to switch the power transmission from the connecting state to a disconnecting state when detecting the latch 33 to be at a full latch position caused by driving the latch 33 with the closer motor 34. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drive control device for a vehicle opening / closing body.

  2. Description of the Related Art Conventionally, as a drive control device for a vehicle opening / closing body, for example, the one described in Patent Document 1 is known. This device generates a driving force in the closing direction necessary to sufficiently deform the weather strip for securing the water tightness provided on the vehicle body side by the driving member when closing the opening / closing body represented by the trunk lid. Then, the opening / closing body is closed. At this time, the opening / closing body bends due to the reaction force from the weather strip. Therefore, after the driving force of the driving member is stopped, when the opening / closing body is elastically restored, an abnormal noise may be generated or an unpleasant behavior may be exhibited.

Therefore, in the apparatus of Patent Document 1, after the door closing state of the opening / closing body is detected by the detecting means, the opening / closing body is driven reversely in the door opening direction by the driving member to eliminate the bending.
Japanese Patent No. 3572451

  By the way, in the apparatus of Patent Document 1, when the opening / closing body is driven in reverse in the door opening direction in order to eliminate bending, it is detected by a control by a timer or a strain sensor installed on the opening / closing body to prevent excessive return. Control based on the amount of distortion. Therefore, the control itself is complicated, and the number of parts is inevitably increased when a strain sensor is installed.

  In addition, the driving of the vehicle opening / closing body provided with an opening / closing body driving mechanism including a driving member and a clutch for generating a driving force in a direction for closing the opening / closing body, and a closer mechanism for driving a latch engaged with a striker provided in the vehicle body. A control device has been proposed by the applicant. In this device, when the opening / closing body is closed by the opening / closing body driving mechanism, the latch is engaged with the striker at the half latch position, and when the opening / closing body is locked at the predetermined half-open position, the driving force by the driving member is stopped. Then, the closer is driven by the closer mechanism to move the latch to the full latch position, and the opening / closing body is locked to the fully closed position.

  Even in such a device, when the opening / closing body moves to a predetermined half-open position with the closing of the opening / closing body by the opening / closing body driving mechanism, the opening / closing body receives a reaction force from the weather strip provided on the vehicle body side. Causes deflection. This bending is eliminated by switching the clutch from the connected state to the disconnected state, and at that time, noise may be generated or uncomfortable behavior may be exhibited.

  An object of the present invention is to suppress an unnatural behavior of an open / close body as a whole in a drive control device for an open / close body for a vehicle including an open / close body drive mechanism that closes the open / close body and a closer mechanism that drives a latch that meshes with a striker. Another object of the present invention is to provide a drive control device for a vehicle opening / closing body.

  In order to solve the above problems, the invention according to claim 1 is directed to a driving member that generates a driving force in a direction to close an opening / closing body attached to the vehicle body so as to be freely opened and closed, and the driving member and the driving member. An opening / closing body drive mechanism for driving the driving member to close the opening / closing body in a connected state of the power transmission by the clutch; A lock mechanism including a striker and a latch provided on either one of the other and the other, and the latch engages with the striker in each of a half latch position and a full latch position, and locks the opening / closing body in a predetermined half-open position and a fully-closed position. And first detection means for detecting that the latch is in the half latch position, and second detection for detecting that the latch is in the full latch position. And a stopping means for stopping the driving force by the driving member when it is detected that the latch is in a predetermined position with the closing of the opening / closing body by the opening / closing body driving mechanism, and the opening / closing body driving A closer mechanism that drives the latch to move the latch to the full latch position when the first detection means detects that the latch is in the half latch position when the opening / closing body is closed by the mechanism. And when the latch is driven by the closer mechanism, the second detection means detects that the latch is at the full latch position, and the latch is located on the opposite side of the half latch position from the full latch position. The power transmission is switched from the connected state to the disconnected state before moving to the position and before returning to the full latch position again. And summarized in that a control means for controlling the clutch.

  According to a second aspect of the present invention, in the drive control device for a vehicle opening / closing body according to the first aspect, the control means is configured to drive the latch by the closer mechanism, and the second detection means causes the latch to move. The gist is to control the clutch so that the power transmission is switched from the connected state to the disconnected state when it is detected that it is in the full latch position.

  According to the first aspect of the present invention, when the opening / closing body moves to a predetermined half-open position with the door closing of the opening / closing body by the opening / closing body driving mechanism, a weathertight weathering weather provided on the vehicle body side is provided. By elastically contacting the strip, a reaction force is received from the weather strip, and the opening / closing body is bent. This bending is accumulated until the power transmission is switched from the connected state to the disconnected state by the clutch. On the other hand, when the latch is driven by the closer mechanism, when the latch is moved from the half-latch position to the full-latch position, the latch is more than the half-latch position to ensure mechanical locking. It further moves (overstroke) to a position opposite to the latch position (that is, a position behind the full latch position). At this time, the opening / closing body is bent further to the back side than the fully closed position, thereby causing bending. However, when the second detection means detects that the latch is in the full latch position, the control means moves the latch to a position opposite to the half latch position from the full latch position. In order to control the clutch so that the power transmission is switched from the connected state to the disconnected state before returning to the full latch position again, the timing of the bending of the opening / closing body accompanying the operation of the closer mechanism is determined. In addition, the deflection of the opening / closing body accumulated during the operation of the opening / closing body driving mechanism (driving member) is eliminated. Therefore, the unnatural behavior of the opening / closing body can be suppressed as a whole.

  According to a second aspect of the present invention, the control means accumulates when the clutch is controlled to switch the power transmission from the connected state to the disconnected state, that is, when the opening / closing body drive mechanism (drive member) is operated. The timing for eliminating the bending of the opened / closed body coincides with the timing at which the second detecting means actually detects that the latch is at the full latch position. Accordingly, the opening / closing body flexure accumulated during the operation of the opening / closing body drive mechanism (drive member) can be eliminated in synchronization with the generation start timing of the opening / closing body bending due to the operation of the closer mechanism.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
1 and 2 are a perspective view and a cross-sectional view, respectively, showing the tail of a vehicle such as an automobile to which the present invention is applied. As shown in the figure, an opening 10a is formed in the rear part of the vehicle body 10, and a rubber weather strip 11 is attached to the opening 10a over the entire periphery thereof. . The vehicle body 10 forms a cargo space S below the opening 10a.

  In the vehicle body 10, on one side and the other side (the right side and the left side in FIG. 1) of the luggage space S, one end of a pair of hinge arms 12a and 12b formed in a U-shape is a rotating part 14 (see FIG. 2). ) And a trunk lid 13 as an opening / closing body is fixed and supported on the other end of each hinge arm 12a, 12b. The trunk lid 13 opens and closes the opening 10a (the cargo space S) by rotating around the rotation shafts (rotating portions 14) of the hinge arms 12a and 12b. When the trunk lid 13 is closed, watertightness is ensured by the weather strip 11 that is pressed against the peripheral edge thereof and elastically deforms.

  Further, in the vicinity of one hinge arm 12b, a drive unit 21 constituting an opening / closing body drive mechanism is installed in the cargo space S, and the drive arm 21 is connected to the hinge arm 12b. Yes. The drive unit 21 opens and closes the trunk lid 13 by transmitting the generated driving force to the trunk lid 13 via the hinge arm 12b.

  That is, as shown in FIG. 3, the drive unit 21 is fixed to the vehicle body 10 by a substantially triangular plate-like bracket 22, and the bracket 22 supports a drive unit motor 23 as a drive member, Further, the rotation shaft of the drive unit motor 23 is drivingly connected to a drive unit clutch 24 as a clutch composed of, for example, an electromagnetic clutch. The bracket 22 rotatably supports a plurality of gears 25a, 25b, and 25c that are sequentially connected to the rotation shaft of the drive unit motor 23 via the drive unit clutch 24. These gears 25a to 25c constitute a gear train 25 as a speed reduction mechanism.

  One end of the first link 26 is connected to the gear 25c so as to rotate integrally, and one end of the second link 27 is rotatably connected to the other end of the first link 26. A bracket 28 fixed to the hinge arm 12b is rotatably connected to the other end of the link 27. The drive unit motor 23 generates a driving force (rotational force) by being supplied with power, and power transmission of the driving force to the gear 25a is possible when the drive unit clutch 24 is supplied with power. It is disabled (connected state) or disabled when power supply to the drive unit clutch 24 is stopped (disconnected state).

  The drive unit 21 having such a structure transmits the drive force generated by the drive unit motor 23 to the gear 25a via the drive unit clutch 24 and decelerates the drive force in the gear train 25 (gears 25b and 25c). The force is increased, and the first and second links 26 and 27 are converted into pushing and pulling force of the hinge arm 12b. As a result, the hinge arm 12b is rotated around the rotating portion 14, and the trunk lid 13 supported by the hinge arm 12b is opened and closed. The other hinge arm 12a is rotated around the rotating portion 14 following the opening and closing of the trunk lid 13.

  As shown in FIGS. 1 and 2, the lower end portion of the rear edge of the trunk lid 13 is provided with a locking device 31 at the center in the width direction, and the vehicle body 10 has an opening facing the locking device 31. A striker 32 is installed inside 10a. The lock device 31 includes a latch 33 that meshes with the striker 32 and a closer motor 34 that drives (rotates) the latch 33, and engages with the striker 32 when the trunk lid 13 is closed by the drive unit 21. . The striker 32 and the latch 33 constitute a lock mechanism. The closer motor 34 constitutes a closer mechanism.

  That is, as the drive unit 21 closes the trunk lid 13, as shown in FIG. 4A, when the striker 32 enters the engagement portion having a U-shaped groove shape of the latch 33, it engages with the striker 32. The latch 33 rotates and is prevented from rotating. The corresponding rotation position of the latch 33 to be prevented from rotating corresponds to a half latch position. When the latch 33 and the striker 32 are engaged with each other at the half latch position, the trunk lid 13 is locked in a predetermined half open position, that is, a so-called half door state. Is done. When the trunk lid 13 moves to a predetermined half-open position, the trunk lid 13 elastically contacts the weather strip 11 to receive a reaction force from the weather strip 11, and together with the hinge arms 12a, 12b, etc. It will bend.

  Further, in this state, when the closer motor 34 is supplied with power and the latch 33 is driven to retract the striker 32, the latch 33 that engages with the striker 32 is further rotated (see FIG. 4B). And the rotation is stopped again. The corresponding rotation position of the latch 33 that is prevented from rotating corresponds to a full latch position. When the latch 33 and the striker 32 are engaged with each other at the full latch position, the trunk lid 13 is locked in a predetermined fully closed position, that is, a so-called fully closed state. The

  As shown in FIG. 4, the lock device 31 individually outputs signals that are turned on when the latch 33 is disposed at the half latch position and the full latch position (hereinafter referred to as a half latch signal and a full latch signal). A rotary switch 36 is mounted as first detection means and second detection means.

  The vehicle body 10 is equipped with a control unit 16 made of, for example, a digital computer. The control unit 16 inputs detection signals (half latch signal and full latch signal) of the rotary switch 36, and controls power supply to the drive unit motor 23, the drive unit clutch 24, and the closer motor 34. The control unit 16 detects that the latch 33 is in the half latch position and the full latch position based on the switching from the OFF state to the ON state of the half latch signal and the full latch signal.

  Next, control modes of the drive unit motor 23 (drive unit 21) and the closer motor 34 by the control unit 16 of the present embodiment will be described with reference to the time chart of FIG. 5A shows the transition of the rotation position of the latch 33, and FIGS. 5B, 5C, and 5D show the power supply of the drive unit motor 23, the drive unit clutch 24, and the closer motor 34. FIG. FIGS. 5E and 5F show the transition of the half latch signal and the full latch signal. 5A to 5F show a transition from a state in which the trunk lid 13 is driven to the door closing side by the drive unit 21. FIG.

  First, as shown in FIGS. 5B and 5C, when the drive signals of the drive unit motor 23 and the drive unit clutch 24 are turned on and power is supplied to the closed side of the trunk lid 13, the trunk lid 13 When the striker 32 starts to enter the meshing portion of the latch 33 with the closing of the door, as shown in FIG. 5 (a), the latch 33 at the predetermined open latch position, which is the initial rotation position, at time t0. It is pressed by the striker 32 and begins to rotate. With this rotation, for example, when the latch 33 reaches the half-latch position at time t1, the half-latch signal is switched from OFF to ON as shown in FIG. At this time, as shown in FIG. 5B, only the drive signal of the drive unit motor 23 is switched from on to off, and the power supply is stopped (stop means). When the latch 33 is rotated to the half latch position, that is, when the trunk lid 13 is moved to the predetermined half-open position, the trunk lid 13 and the hinge arms 12a and 12b are caused to react with the weather strip 11. To bend. This bending is accumulated until the power transmission is switched from the aforementioned connected state to the disconnected state by the drive unit clutch 24.

  Further, as shown in FIG. 5D, at time t1, in order to take over the closing operation of the trunk lid 13, the drive signal of the closer motor 34 is switched from OFF to ON, and the latch 33 is rotationally driven. . As a result, the latch 33 further rotates to the full latch position. With this rotation, as shown in FIG. 5A, when the latch 33 reaches the half-latch position at time t2, as shown in FIG. 5F, the full latch signal is turned off. Switch on. At this time, as shown in FIG. 5C, the drive signal of the drive unit clutch 24 is switched from on to off, and the power supply is stopped (control means). At this time, the bending produced in the trunk lid 13 and the hinge arms 12a and 12b is eliminated.

  Since the latch 33 that has reached the full latch position reliably performs mechanical locking, as shown in FIG. 5A, as shown in FIG. , It further rotates (overstroke) to the back side of the full latch position. At this time, as exaggeratedly shown by a two-dot chain line in FIG. 2, the trunk lid 13 is bent further toward the back side than the fully closed position, thereby causing bending. When the trunk lid 13 cancels this bending by its own elastic force, the latch 33 returns to the full latch position again at time t3 as shown in FIG.

  That is, in the present embodiment, the trunk lid 13 and the hinges accumulated during the operation of the drive unit 21 (drive unit motor 23) are synchronized with the generation timing (time t2) of the trunk lid 13 accompanying the operation of the closer motor 34. The bending of the arms 12a, 12b, etc. is eliminated. Note that, as shown in FIG. 5D, at time t4, the drive signal of the closer motor 34 is switched from on to off, and the power supply is stopped. Then, the door closing operation of the trunk lid 13 is completed.

As described above in detail, according to the present embodiment, the following effects can be obtained.
(1) In this embodiment, when the trunk lid 13 moves to a predetermined half-open position with the door closing of the trunk lid 13 by the drive unit 21, the weather strip 11 is elastically brought into contact with the weather strip 11 to thereby move the weather. A reaction force is received from the strip 11, and the trunk lid 13 and the hinge arms 12a and 12b are bent. This bending is accumulated until the power transmission is switched from the connected state to the disconnected state by the drive unit clutch 24. On the other hand, when the latch 33 is driven by the closer motor 34 to rotate the latch 33 from the half-latch position to the full-latch position, the latch 33 is used to ensure mechanical locking. It further moves (overstroke) to a position opposite to the half latch position from the position (that is, a position behind the full latch position). At this time, the trunk lid 13 is bent by being further closed than the fully closed position. However, the control unit 16 controls the drive unit clutch 24 so that the power transmission is switched from the connected state to the disconnected state when the rotary switch 36 detects that the latch 33 is in the full latch position. The bending of the trunk lid 13 accumulated during the operation of the drive unit 21 (drive unit motor 23) is eliminated in accordance with the generation timing of the bending of the trunk lid 13 accompanying the operation of the closer motor 34. Therefore, the unnatural behavior of the trunk lid 13 can be suppressed as a whole.

  Further, if an existing sensor used in the control of the conventional closer motor 34 is used as the rotary switch 36, there is no need to add a new component (sensor or the like). Therefore, an increase in the number of parts can be suppressed, and as a result, cost can be reduced.

  (2) In this embodiment, the control unit 16 controls the drive unit clutch 24 to switch the power transmission from the connected state to the disconnected state, that is, when the drive unit 21 (drive unit motor 23) is operated. The accumulated timing for eliminating the bending of the trunk lid 13 coincides with the timing at which the rotary switch 36 actually detects that the latch 33 is at the full latch position. Accordingly, the trunk lid 13 accumulated during the operation of the drive unit 21 (drive unit motor 23) can be eliminated in synchronization with the generation start timing of the trunk lid 13 associated with the operation of the closer motor 34.

In addition, you may change the said embodiment as follows.
In the embodiment, the timing for stopping the power supply to the drive unit clutch 24, that is, the timing for canceling the flexure generated in the trunk lid 13 and the hinge arms 12a and 12b is from time t2 to before time t3. That is, it can be arbitrarily set as long as it is until the bending due to the trunk lid 13 being further closed from the fully closed position is eliminated. In this case, the time t3 (elapsed time from the time t2, etc.) related to the door closing operation of the trunk lid 13 is obtained in advance by experiment, and power supply to the drive unit clutch 24 is stopped by timer control by the control unit 16, for example. Good.

In the embodiment, the latch 33 (lock device 31) may be installed on the vehicle body 10, and the striker 32 may be installed on the trunk lid 13.
In the embodiment, the rotation position (half latch position, full latch position) of the latch 33 may be detected by, for example, a rotation sensor provided with a magnetic detection element.

  In the above embodiment, the opening / closing body may be a vehicle door (swing door, slide door, etc.) provided on the side of the vehicle body 10, a back door provided on the rear, or the like.

The perspective view which shows one Embodiment of this invention. Sectional drawing which shows the same embodiment. The side view which shows a drive unit. (A) (b) is explanatory drawing which shows operation | movement of a locking device. (A) (b) (c) (d) (e) (f) is a time chart showing the control mode of the same embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Vehicle body, 10a ... Opening part, 11 ... Weather strip, 12a, 12b ... Hinge arm, 13 ... Trunk lid, 16 ... Control unit which comprises a stop means and a control means, 21 ... Drive unit which comprises an opening-and-closing body drive mechanism , 23 ... Drive unit motor as drive member, 24 ... Drive unit clutch as clutch, 31 ... Locking device, 32 ... Striker, 33 ... Latch, 34 ... Closer motor constituting closer mechanism, 36 ... First and second Rotary switch as detection means.

Claims (2)

A driving member that generates a driving force in a direction to close the opening / closing body that is attached to the vehicle body so as to be freely opened and closed, and a clutch that intermittently transmits power between the driving member and the opening / closing body. An opening / closing body drive mechanism for driving the driving member to close the opening / closing body in a connected state of power transmission;
A striker and a latch provided on one and the other of the vehicle body and the opening / closing body, and the latch meshes with the striker at each of a half-latch position and a full-latch position, so that the opening-closing body is moved to a predetermined half-open position and all A locking mechanism that locks in the closed position;
First detecting means for detecting that the latch is in a half latch position;
Second detection means for detecting that the latch is in a full latch position;
Stop means for stopping the driving force by the driving member when it is detected that the latch is in a predetermined position with the closing of the opening / closing body by the opening / closing body driving mechanism;
When the first detection means detects that the latch is in the half latch position as the opening / closing body is closed by the opening / closing body drive mechanism, the latch is driven to move the latch to the full latch position. A closer mechanism to move,
With the driving of the latch by the closer mechanism, the latch is moved to a position opposite to the half latch position from the full latch position when the second detection means detects that the latch is at the full latch position. And a control means for controlling the clutch so as to switch the power transmission from the connected state to the disconnected state before moving back and returning to the full latch position again. Body drive control device. The drive control device for a vehicle opening / closing body according to claim 1,
The control means switches the power transmission from the connected state to the disconnected state when the second detecting means detects that the latch is at the full latch position in accordance with the driving of the latch by the closer mechanism. Further, the drive control device for a vehicle opening and closing body is characterized by controlling the clutch.

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