JP2007217975A - Power open/close device of opening/closing body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effect the closing operation of an opening/closing body which is in a fully-opened position by a favorable driving force. <P>SOLUTION: The power open/close device of the opening/closing body is provided with a second drive unit 5 and a driving force transfer member 3. When the closing operation of the opening/closing body 1 is effected from the fully-opened position, the second drive unit 5 can be driven concurrently with the drive of a first drive unit 4, or prior to the drive of the first drive unit 4. Then the driving force transfer member 3 transfers the driving force of the second drive unit 5 to the side which is closer to the tip of the opening/closing body 1 than a connecting shaft 29 which connects the other end of the second hinge link 23 to the opening/closing body 1 side. Thus, the opening/closing body 1 is moved from the fully-opened position to the closing direction at a predetermined angle. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a power opening / closing device for an opening / closing body that opens and closes an opening / closing body that can open and close an opening provided in a vehicle body, for example, a luggage door by a driving force of a motor.

The luggage door needs to be opened to a sufficient degree of opening so as not to hinder the operation of loading and unloading luggage. To achieve this, the luggage door is opened and closed with a four-bar linkage mechanism having two hinge links of different lengths. When the luggage door is fully open, the connecting shaft of the shorter hinge link (the shorter one) The pivot point where one end of the hinge link is connected to the luggage door side is the rotation axis that pivotally attaches the shorter hinge link to the vehicle body side and the connection axis of the longer hinge link (the longer hinge link It is made to displace to the area | region of the opening direction side exceeding the straight line (X) which connects one end part with the pivot point connected with the luggage door side.
JP 2000-96914 A

  However, if the luggage door supported by the four-bar linkage mechanism as described above is configured to be opened and closed by a driving force of a motor or the like, the shorter hinge link particularly when closing the luggage door when fully opened. The connecting shaft is displaced beyond the straight line (X) to the region on the opening direction side, and thus requires a particularly large driving force. Therefore, it is necessary to provide a large drive unit that can generate an excessive drive force.

  SUMMARY OF THE INVENTION The present invention provides a power opening / closing device for an opening / closing body capable of closing the opening / closing body in a fully open position with a suitable driving force in view of the above-described problems of the prior art. It is aimed.

According to the present invention, the above problem is solved as follows.
(1) First and second hinge links having one end connected to the vehicle body side and the other end rotatably connected to an opening / closing body side capable of opening and closing an opening provided in the vehicle body; A power opening / closing device of an opening / closing body comprising a first driving unit for supplying a driving force to one of the first and second hinge links, wherein the opening / closing body is opened and closed by driving the first driving unit; When the opening / closing body is closed from the fully open position, a second drive unit that can be driven simultaneously with the driving of the first driving unit or prior to the driving of the first driving unit, and the driving force of the second driving unit The other end of the longer hinge link of the first and second hinge links is transmitted to the side closer to the front end of the opening / closing body from the connecting shaft connected to the opening / closing body side, and thereby the opening / closing body is moved from the fully open position. Predetermined angle , And a driving force transmission member is moved in the closing direction.

(2) In the above item (1), the driving force transmitting member is a damper stay that assists the opening / closing force of the opening / closing body.

According to the present invention, the following effects can be obtained.
(A) According to the first aspect of the present invention, the driving force of the second driving unit is connected to the opening / closing body side of the longer one of the first and second hinge links via the driving force transmitting member. This is transmitted from the connecting shaft to the side closer to the tip of the opening / closing body, whereby the opening / closing body can be closed by a suitable driving force in the closing direction from the fully opened position by a predetermined angle.

(B) According to the invention described in claim 2, the driving force of the second driving unit can be transmitted to the luggage door via the damper stay that assists the opening / closing force of the opening / closing body.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a rear portion of a vehicle including a luggage door that constitutes an opening / closing body to which the present invention is applied, and FIGS. 2 to 5 are side views of main portions when the luggage door is in each position. In the following description, the left side of each figure is “front” and the right side is “rear”.

  As shown in FIG. 1, the luggage door (1) has a hinge (2) whose base end (front) is constituted by a four-bar linkage mechanism, and opens and closes an opening that forms a trunk room provided at the rear of the vehicle body. Supported as possible. A known damper stay (3) is installed between the luggage door (1) and the vehicle body to expand and contract in the longitudinal direction as the luggage door (1) opens and closes to assist the opening and closing force of the luggage door (1). Has been.

  A lock device (11) is attached to the front end (rear part) of the luggage door (1) at the center in the vehicle width direction. The luggage door (1) is constrained to a fully closed position for closing the opening of the trunk room by engaging a striker (not shown) fixed to the rear part of the vehicle body, and the lock device (11). ) Can be opened from the striker.

  The opening operation of the luggage door (1) is performed by the first drive unit (4) that supplies driving force to the hinge (2), and the closing operation is performed by opening the luggage door (1) to the fully open position (FIGS. 1 and 2). During a period of movement in the closing direction by a predetermined angle from the reference), that is, a period requiring a particularly large driving force, the driving force in the closing direction is applied to the luggage door (1) via the damper stay (3) constituting the driving force transmitting member. This is performed by the cooperative action of the second drive unit (5) for supplying the first drive unit (4) and the first drive unit (4).

  The hinge (2) includes a lower base (21) fixed to the side wall of the opening of the trunk room, a front first hinge link (22), a rear second hinge link (23), and a luggage door (1). And an upper base (24) fixed to the base end portion (rear end portion).

  One end of the first hinge link (22) is connected to the lower base (21) by the first connecting shaft (25) so as to be rotatable in the vertical direction, and the other end is connected to the upper base (26) by the second connecting shaft (26). 24) is pivotally connected.

  A first sector gear (27) that can rotate integrally with the first hinge link (22) is fixed to one end of the first hinge link (22).

  The second hinge link (23) has a length in the longitudinal direction longer than that of the first hinge link (22), and one end portion of the second hinge link (23) is located behind the first connection shaft (25) (28). ) Is connected to the lower base (21) so as to be rotatable in the vertical direction, and the other end of the fourth connecting shaft (29) is located closer to the tip of the luggage door (1) than the second connecting shaft (26). It is connected so that rotation is possible.

  When the luggage door (1) is in the fully closed position (see FIG. 5), the first and second hinge links (22) and (23) are in the fully closed position in the lying posture with the left and right overlapping each other. When the luggage door (1) is in the fully open position, the luggage door (1) is in the fully open position in a standing posture that is rotated clockwise (opening direction) from the lying position.

  The relative positional relationship between the second connecting shaft (26) and the straight line (X) (the straight line connecting the first connecting shaft (25) and the fourth connecting shaft (29)) is the opening / closing position of the luggage door (1). Will change accordingly. Specifically, the second connecting shaft (26) has a fully open position where the luggage door (1) is rotated from the fully closed position and the fully opened position by a predetermined angle in the closing direction with respect to the straight line (X) (see FIG. 3). ) Is located in the region on the closing direction (counterclockwise) side, and in the fully open position, it is located on the opening direction (clockwise) side as shown in FIG. Therefore, when the luggage door (1) is closed from the fully opened position by the driving force of a motor or the like, the period until the second connecting shaft (26) moves in the closing direction beyond the straight line (X) is particularly large. Requires driving force. Therefore, in the present invention, during this period, the driving force of the second driving unit (5) is applied to the luggage door (1) from the fourth connecting shaft (29) via the damper stay (3). 1), the luggage door (1) is moved from the fully open position to the fully open position.

  The first drive unit (4) is mounted below the lower base (21), and includes a first motor (not shown), a reduction gear (not shown) for reducing the rotation of the first motor, a first motor, An electromagnetic clutch (not shown) that can connect and disconnect the transmission path to and from the reduction gear, and a first drive gear (41) that outputs rotation of the reduction gear when the electromagnetic clutch is in a connected state.

  The first drive gear (41) meshes with the first sector gear (27) and transmits the driving force of the first motor to the first hinge link (22) via the first sector gear (27).

  When the first drive gear (41) rotates in the opening direction (counterclockwise) by the driving of the first drive unit (4) (the state where the first motor rotates and the electromagnetic clutch is connected), the first sector gear ( 27) rotates in the opening direction (clockwise). Accordingly, the first hinge link (22) rotates from the fully closed position toward the fully open position, and accordingly, the second hinge link (23) also rotates to the fully open position. When the first drive gear (41) rotates in the closing direction (clockwise), the first and second hinge links (22) and (23) rotate from the fully open position to the fully closed position.

  When the electromagnetic clutch of the first drive unit (4) is in a disconnected state, the luggage door (1) can be opened and closed by manual operation.

  The second drive unit (5) is mounted on a support plate (6) disposed at the rear of the lower base (21), and a second motor (not shown) and a reduction gear (not shown) for reducing the rotation of the second motor. (Not shown) and a second drive gear (51) for outputting the rotation of the reduction gear.

  The support plate (6) is connected to the second sector gear (8) and the second sector gear (8) by a pivot (7) located behind the third connection shaft (28). 81) is pivotally attached.

  The second sector gear (8) meshes with the second drive gear (51), and is rotated by a predetermined angle from the standby position (see FIGS. 2, 4 and 5) to the operation direction (clockwise) from the standby position. It is rotated to a position (see FIG. 3) and held at that position.

  The damper stay (3) is rotatably connected to the connecting plate (81) by a fifth connecting shaft (31) positioned at the rear of the third connecting shaft (28), and has the other end at the second end. The fourth connecting shaft (29) is rotatably connected by a sixth connecting shaft (32) located closer to the tip of the luggage door (1).

  When the luggage door (1) is in the fully open position, the second sector gear (8) is held in the standby position, and the damper stay (3) is extended to the maximum and is not extended any further. . In this state, when the second sector gear (8) is rotated from the standby position to the operating position by driving the second drive unit (5), one end of the damper stay (3) is displaced in the closing direction (rearward). . Thereby, the driving force of the second drive unit (5) is transmitted to the luggage door (1) via the damper stay (3), and the luggage door (1) is rotated from the fully opened position to the fully opened position. In this case, the portion to which the driving force of the second drive unit (5) is transmitted is closer to the tip of the luggage door (1) than the fourth connecting shaft (29). The first hinge link (22) is rotated by the driving force, and the driving force can be made smaller than the driving force for rotating the luggage door (1) from the fully opened position to the fully opened position.

  The first motor and electromagnetic clutch of the first drive unit (4) and the second motor of the second drive unit (5) are controlled by a control circuit device (not shown) mounted on the vehicle.

  Specifically, when opening an operation switch or a remote operation switch (hereinafter referred to as an operation switch) provided in the driver's seat, the first motor and the electromagnetic clutch of the first drive unit (4) are driven and controlled, The driving force of the first drive unit (4) is supplied to the first hinge link (22) to move the luggage door (1) from the fully closed position to the fully open position. In this case, the second drive unit (5) is not driven while the second sector gear (8) is held at the standby position.

  When the luggage door (1) is closed, the second motor of the second drive unit (5) is first controlled to move the second sector gear (8) from the standby position to the operating position. Thereafter, the second motor is reversed, the second sector gear (8) is returned to the standby position, and the first drive unit (4) is driven and controlled in the closing direction.

Next, the effect | action at the time of closing operation of embodiment in this invention is demonstrated.
As shown in FIG. 2, when the luggage door (1) is in the fully open position, the second connecting shaft (26) of the first hinge link (22) is positioned in the region on the opening direction side beyond the straight line (X). is doing.

  When the operation switch is closed in this state, the second drive unit (5) is first driven, the drive gear (51) rotates in the closing direction, and the second sector gear (8) is moved from the standby position to the operating position. Rotate. Thereby, the driving force of the second drive unit (5) is transmitted to the luggage door (1) via the damper stay (3), and the luggage door (1) is fully opened from the fully open position as shown in FIG. Rotates to the front position. When the luggage door (1) is closed to the position before full opening, the second connecting shaft (26) is displaced beyond the straight line (X) to the region on the closing direction side.

  After the luggage door (1) is closed to the position before full opening, the second drive motor of the second drive unit (5) is reversed to return the second sector gear (8) to the standby position, and the first drive unit (4 ). When the first drive unit (4) is driven, the driving force is supplied to the first hinge link (22) via the first sector gear (27). As a result, the luggage door (1) moves to the fully closed position shown in FIG. 5 via the half-open position shown in FIG. When the luggage door (1) is in the fully closed position, the first drive unit (4) stops.

Although the embodiments of the present invention have been described, the following various modifications and changes can be made to the present embodiments without departing from the scope of the present invention.
(I) Instead of the damper stay (3) for assisting the opening / closing force of the luggage door (1), the driving force transmission member is replaced with an extendable link that is a separate part from the damper stay (3), or the second drive unit. Use a cable that can transmit the driving force (5) to the luggage door (1).
(Ii) The opening / closing body is other than the luggage door (1), for example, a back door, a hood or the like.
(Iii) When the luggage door (1) is closed from the fully open position, the second drive unit (5) is first driven and then the first drive unit (4) is driven. The first drive unit (4) is also driven simultaneously with the drive of the second drive unit (5).

It is a side view of a vehicle rear part provided with a luggage door to which the present invention is applied. It is a side view of the principal part at the time of a luggage door full open. It is a side view of the principal part before the luggage door is fully opened. It is a side view of the principal part at the time of a luggage door half open. It is a side view of the principal part at the time of a luggage door fully closed.

Explanation of symbols

(1) Luggage door (opening / closing body)
(2) Hinge
(3) Damper stay (drive force transmission member)
(4) First drive unit
(5) Second drive unit
(6) Support plate
(7) Axis
(8) Second sector gear
(11) Locking device
(21) Lower base
(22) First hinge link
(23) Second hinge link
(24) Upper base
(25) 1st connecting shaft
(26) Second connecting shaft
(27) 1st sector gear
(28) Third connecting shaft
(29) Fourth connecting shaft (connecting shaft)
(31) Fifth connecting shaft
(32) Sixth connecting shaft
(41) First drive gear
(51) Second drive gear
(81) Connecting plate

Claims (2)

The first and second hinge links having one end connected to the vehicle body side and the other end rotatably connected to the opening / closing body side capable of opening and closing an opening provided in the vehicle body, A power opening / closing device for an opening / closing body, comprising: a first driving unit that supplies a driving force to one of the two hinge links, wherein the opening / closing body is opened / closed by driving the first driving unit;
A second driving unit that can be driven simultaneously with driving of the first driving unit or prior to driving of the first driving unit when the opening / closing body is closed from the fully open position;
The driving force of the second drive unit is transmitted from the connecting shaft to which the other end of the longer one of the first and second hinge links is connected to the opening / closing body side to the tip side of the opening / closing body, And a driving force transmission member for moving the opening / closing body in a closing direction from the fully opened position by a predetermined angle.   2. A power opening / closing device for an opening / closing body according to claim 1, wherein the driving force transmitting member is a damper stay for assisting an opening / closing force of the opening / closing body.

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