JPH0762422B2 - Automatic opening / closing device for opening / closing body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention relates to an automatic opening / closing device for an opening / closing body suitable for a back door of an automobile or the like.

(Prior Art) Generally, in an opening / closing body such as a one-box type back door, an open state is obtained by jumping upward with a hinge as a fulcrum, and a fully closed state is obtained by rotating it downward. It is like this.

(Problems to be Solved by the Invention) As described above, an opening / closing body such as a one-box type back door is opened and closed by using a hinge as a fulcrum. The state is ensured that it jumps up greatly so as not to get in the way. For this reason, when closing the back door at a high position, it is not desirable in terms of operability such that the user may be forced to stretch his back in an unreasonable posture in some cases. In addition, opening and closing operations are troublesome when carrying baggage or on a rainy day.

Therefore, according to the present invention, it is needless to say that the opening / closing body can be manually opened / closed without any trouble as in the conventional case, from full open to full close, and from full close to full open. It is an object of the present invention to provide an automatic opening / closing device for an opening / closing body that can be automatically opened / closed without a need.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, according to the present invention, a drive motor capable of normal rotation and reverse rotation, and reciprocating movement by forward rotation and reverse rotation of the drive motor. A drive member, and a first slider that is connected to the drive member and that moves up and down along the first guide member when the drive member moves forward and that descends when the drive member moves backward;
A second slider arranged above the first slider and slidable along the first guide member, and a second guide member provided on the opening / closing body side having an assisting mechanism capable of urging to the open side. And a slide mechanism slidable up and down, a link mechanism in which links are extended in two directions from the slide body, one link is pivotally attached to the second slider, and the other link is pivotally attached to the vehicle body side, respectively. A locking device that locks the first and second sliders when locked and unlocks when unlocked, and interlocks with the locking device;
A lock device control mechanism that unlocks the lock device in the locked state when the second slider is raised and lowered.
A first detection switch that stops the operation of the drive motor by striking a switch terminal when the lock device is unlocked and when the first slider is at the lowest position; and when the lock device is unlocked, A second detection switch that reverses the drive motor so as to lower the first slider by striking the switch terminal when the second slider is in the highest position where the second slider is separated from the first slider by being assisted by the assisting mechanism, and the highest lift of the first slider. And a third detection switch for reversing the drive motor so as to lower the first slider by hitting the switch terminal when the locking device is locked.

(Operation) According to such an automatic opening / closing device, when the opening / closing body is fully closed, the second slider is in the uncoupling state with respect to the first slider, so that the opening / closing body can be manually opened or closed.

Next, when the opening / closing body is opened by the drive motor, the second slider is moved to the second uppermost position apart from the first slider.
The detection switch operates, and only the first slider is lowered by the reverse rotation of the drive motor, and enters the standby state. Therefore, the opening / closing body can be closed by hand.

On the other hand, in order to close the opening / closing body in the open state by power, the first slider in the standby state is raised by the drive motor. At the highest position of the first slider, the switch terminal of the third detection switch is tapped, and the first slider, which is coupled with the second slider, is lowered by the reverse rotation of the drive motor.
As a result, the fully closed state of the opening / closing body can be obtained,
It is possible to open and close the opening / closing body manually or automatically under any of the conditions.

(Embodiment) An embodiment of the present invention will be described in detail below with reference to the drawings of FIGS. 1 to 8.

In the figure, 1 indicates a one-box type vehicle body. At the rear part of the vehicle body 1, there is provided a flip-up type back door 5 which opens and closes with upper hinges 3, 3 as fulcrums. The back door 5 can be rotated from an open state (solid line in FIG. 8) rotated to the top to a fully closed state (chain line in FIG. 8) by balancing the door weight by an assisting mechanism 6 such as a gas stay. When the door 5 is fully closed, a locked state in which it is locked by the lock device 7 and an unlocked state in which it can be opened and closed are obtained.

The locking device 7 has a striker 9 provided on the vehicle body 1 side when the back door 5 is fully closed, and a latch 11 that engages with and disengages freely. The latch 11 serves as a striker 9 when the back door 5 is completely closed. It is possible to rotate between a normal meshing state (full latch) and a half door state (half latch) that is not completely closed by the seal reaction force. The latch 11 in the half-latched state is a conventionally known one that is controlled to be fully latched by a working cable 15 extended from the closure device 13 to a regular meshing state so that an accident due to a half-door state does not occur. The motor 17 of the closure device 13 that pulls and controls the actuation cable 15 outputs a detection signal detected by a half-latch detection sensor (not shown) by keeping the latch 11 in the half-latched state for a predetermined time when the back door 5 is half-opened. Based on this, it is turned on, and when it is fully latched, it is controlled to be off by a detection signal from a full latch detection sensor (not shown).

In addition, the latch 11 in the full-latch state, which normally meshes, is disengaged by the outside handle 20 for manual operation, which is interlockingly connected with the open lever 19, and the actuator 23, which is interlockingly connected through a transmission means such as the operating rod 21. The operation system is controlled by the state and can operate independently. The open lever 19 is pulled by the actuator 23 when it is turned on (arrow in Fig. 2) to latch
Functions to release the meshed state of 11. Further, the actuator 23 is an automatic opening / closing device for opening / closing the back door 5.
When the hand switch to turn on 25, 25 is operated, the operating state of on is obtained at the same time.

The automatic opening / closing devices 25, 25 are arranged behind the vehicle body 1 on both left and right sides.

The automatic opening / closing device 25 has a first guide member 27 on the vehicle body 1 side and a second guide member 29 on the back door 5 side.

The first guide member 27 has an upper cam surface 27a and a lower cam surface 27b in the upper area and the lower area, respectively.
7b is continuous by the guide surfaces 27c and 27d. Also, the first
A rail portion 33 is provided substantially in the center of the guide member 27 along the longitudinal direction, and is fixedly supported by the vehicle body 1 by a base plate 35.

A drive body 39 is mounted on the rail portion 33 so as to be vertically movable by a drive motor 37.

The driving body 39 includes a first slider 43 and a second slider 41 arranged above the first slider 43, and includes a locking device.
It is possible to connect and disconnect by 40.

The lock device 40 has a striker 45 and a latch 47, and the second slider 41 has the striker 45 and the first slider.
43 is a latch 47 that engages with the striker 45 in a disengageable manner.
Are provided respectively.

The latch 47 of the first slider 43 is rotatable about a latch shaft 49 as a center (FIG. 4) and in a non-engaged standby state (solid line in FIG. 3). When the back door 5 is closed, it is latched.
As shown in FIG. 3, the 47 and the striker 45 are set in a standby state when they are out of mesh.

The latch 47 is a striker 45 by the lock device control mechanism 50.
A locked state in which the striker 45 is disengaged and an unlocked state in which the striker 45 is disengaged are ensured.

The lock device control mechanism 50 includes a locking portion 51 that can be engaged with and disengaged from the claw 47a of the latch 47, and first, second, and third arms 52, 54, 56.
And have.

The locking portion 51 is rotatable about the locking shaft 51a as a fulcrum, and is always biased by the biasing spring 58 to the operating position (solid line in FIG. 7).
When locking the latch 47 and the striker 45, the claw portion 47a of the latch 47
By engaging with each other, the restraint state of the latch 47 is ensured.

The first arm 52 has one end pivotally attached to the second arm 54 and the other end pivotally attached to a roller 52 rolling along the cam surfaces 27a and 27b and the guide surfaces 27c and 27d. There is.

The other end of the second arm 54, one end of which is pivotally attached to the first arm 53, has a hook portion 54a and is rotatable with the third arm 56 via a pin P ₄ which is slidable within the slot 54b. Pivotally attached, the hook portion 54a can be engaged with and disengaged from the locking portion 51.

The third arm is rotatable about an arm shaft 56a as a fulcrum and is always biased clockwise by a biasing spring 62.

As shown in FIG. 7, the relationship between the hook portion 54a and the locking portion 51 is such that when the first and second sliders 43, 41 contact each other, the second slider 4
When the second and third arms 54, 56 are pressed by the protrusion 64 provided in 1 and the pin P ₄ serves as a fulcrum, the engaging portions 51 are engaged with each other. Also, the roller 53
Ride on the guide surface 27d from the upper cam surface 27a and the lower cam surface 27b, the second arm 54 is pulled in the direction of the arrow, and the locking portion 51 resists the biasing spring 58 in the counterclockwise direction, that is, the locking. Department
It is designed to rotate away from 51. In addition,
The projection 64 is constantly biased toward the second arm 54 side by a biasing spring 64a.

The drive motor 37 of the automatic opening / closing device 25 is mounted on the vehicle body 1 side so that it can be rotated in the forward and reverse directions by operating a hand switch provided in the vicinity of the driver's seat.
To reciprocate (arrows A and B in FIG. 3), and the operation is controlled by first, second and third detection switches LS-1 and LS-2 which will be described later.

The geared wire 61 is interlockingly connected to the second slider 43, and raises the first slider 43 when the geared wire 61 reciprocates (arrow a) and lowers the first slider 43 when returning (arrow b).

The first detection switch LS-1 is arranged on the side of the lower end portion of the first guide member 27 and is for detecting the lowermost position of the driving body 39. When the driving body 39 descends, the first slider 43 switches. The drive motor 37 is turned off by coming into contact with the terminal S ₁ .

The second detection switch LS-2 is arranged on the side of the upper end portion of the first guide member 27, is for detecting the highest lifted position of the second slider 41, and of the lock device 40 separated from the first slider 43. At the time of unlocking and when the assisting mechanism 6 moves up to the highest position, the second slider 41 comes into contact with the switch terminal S ₂ so that the drive motor 37 reverses so that only the first slider 43 moves down. Have

The third detection switch LS-3 is arranged below the second detection switch LS-2 and laterally of the upper end portion of the first guide member 27.
It is for detecting the highest lifted position of the slider 43, and when the lock device 40 that engages with the second slider 41 is locked, and
When the first slider 43 moves up to the highest position, the first
The slider 43 has a function of reversing the drive motor 37 so that the first slider 43 descends when the slider 43 comes into contact with the switch terminal S ₃ .

Further, a fourth detection switch LS-4 is arranged above the first detection switch LS-1 and on the side of the lower end portion of the first guide member 27. The fourth detection switch LS-4 is not a for initial raised position detection of the driver 39, the driver 39 is first slider 43 rises slightly from the lowermost position with each other in contact with the switch terminal S ₃ It functions to turn off the actuator 23.

On the other hand, the second guide member 29 provided on the back door 5 side
Is formed in a pipe shape, and upper and lower ends thereof are supported by the brackets 63, 63 on both ends of the back door 5.
A sliding body 65 is slidably fitted into the second guide member 29. At the mounting portion 65a of the sliding body 65, the ends of the link 67 extending upward and the link 69 extending downward are pinned.
It is pivotally attached by P ₁ . An extended end of the link 67 extending upward is pivotally attached to a mounting bracket 70 fixed to the vehicle body 1 by a pin P ₂ . The extended end of the link 69 extended downward is rotatably attached to the first slider 41 by a pin P ₃ , and a link mechanism 71 is formed by the links 67 and 69. The position of the pin P ₁ of the attachment portion 65a is set to be located outside (left side in FIG. 1) of the line W connecting the pins P ₂ and P ₃ on the extension end side of the links 67 and 69.

Since the other automatic opening / closing device 25 is the same as the constituent members of the automatic opening / closing device 25 described above, the same reference numerals are given and detailed description thereof will be omitted. Reference numeral 73 denotes a window panel of the back door 5.

The operation of the automatic opening / closing device thus configured will be described.

When the back door 5 is fully closed, the first and second sliders
Since 43 and 41 are in the uncoupled state, the lock device 7 is unlocked without affecting the actuator 23 by the operation of the outside handle 20, so that the back door 5 can be manually opened and closed. When the back door 5 is opened and closed manually, only the second slider 41 moves up and down along the rail portion 33 as shown in FIG. 6, so that there is no hindrance to the opening and closing of the back door 5.

Next, in order to open and close by power, when the drive motor 37 is rotated in the forward direction by operating the hand switch, the actuator 23 also operates and the lock device 7 is unlocked. At the same time, the first slider 43 also rises, and at this time, the first slider 43 pushes up the second slider 41, and the latch 47 and the striker 45 ascend in a meshed state. At this time, an upward pressing action is exerted on the lower link 69, and the sliding body 65, which is the pressing point, is outside the line W connecting the pins P ₂ and P ₃ , so the upper link
67 has a function of rotating outwardly (arrow C in FIG. 1) about the pin P ₂ as a fulcrum. As a result, the back door 5 smoothly rotates upward and a large open state of the back door 5 is obtained up to the θ angle. To be

On the other hand, when the driving body 39 rises, the roller 53 moves the upper cam surface 27a.
When the vehicle rides on the guide surface 27d from the above, the locking device 40 is unlocked by the action of the locking device control mechanism 50 as shown in FIG. 1, and the second slider 41 separated from the first slider 43 is raised to the uppermost position by the assisting mechanism 6. 2nd detection switch LS
-Tap the switch terminal S _{3 of} -2. As a result, only the first slider 43 descends due to the reverse rotation of the drive motor 37, hits the switch terminal S ₁ of the first detection switch LS-1 at the most lowered position, and the drive motor 37 stops, thereby standing by as shown in FIG. Becomes Therefore, the back door 5 can be manually closed without trouble.

Further, as shown in FIG. 6, when the drive motor 37 is rotated in the normal direction when the back door 5 is opened, the first slider 43 continues to move upward by the forward movement of the geared wire 61 (arrow B),
As shown by the chain line in the figure, the locking device control mechanism 50 operates and the latch 47
The striker 45 and the striker 45 are in a locked state, and the switch terminal S ₃ of the third detection switch LS- ₃ is tapped. As a result, the first and second sliders 43, 41 descend while remaining in an integrally connected state. During this descending movement, the roller 53 moves the lower cam surface 27b.
When it reaches the guide surface 27b from, the latch 47 and the striker 45 are brought into the disengaged state again by the action of the lock device control mechanism 50, and the first slider 43 strikes the switch terminal S ₁ of the first detection switch LS- ₁ to drive the drive motor 37. Then, the back door 5 is closed, and the closed state of the back door 5 is obtained. Therefore, it is possible to open / close manually or automatically under any opening / closing condition.

When the door is closed, the lock device 7 in the half-latched state is secured by the closure device 13 in a locked state in which the latch and the striker are engaged at the normal position.

In addition, although the back door 5 is described in this embodiment, it may be applied to other opening / closing bodies.

[Effects of the Invention] As described above, according to the automatic opening / closing device of the present invention, the opening / closing body can be manually opened / closed and opened / closed by motive power under any opening / closing condition. Can be improved. Further, since the sliding portion can slide to a position close to the pivot hinge point, the opening / closing body can be largely opened with a short stroke of the first and second sliders.

[Brief description of drawings]

FIG. 1 is a schematic side view of a rear portion of an automobile in which the automatic opening / closing device of the present invention is implemented, FIG. 2 is a schematic rear view of the same as above, and FIG. 3 is an enlarged view in which a driver is attached to a first guide member. Four
FIGS. 5, 5 and 6 are operation diagrams of the same as above, FIG. 7 is an enlarged view showing the relationship between the lock device control mechanism and the lock device, and FIG.
The figure is a schematic side view of a state in which a back door such as an opening / closing body is opened. 5 …… Opening / closing body 6 …… Assisting mechanism 27 …… First guide member 29 …… Second guide member 37 …… Drive motor 40 …… Lock device 41 …… Second slider 43 …… First slider 50… … Locking device control mechanism 61 …… Geared wire (driving member) 65 …… Sliding body 71 …… Link mechanism LS-1 …… First detection switch LS-2 …… Second detection switch LS-3 …… Third detection switch

Claims (1)

[Claims] 1. A drive motor capable of forward and reverse rotation, a drive member that reciprocates by forward and reverse rotation of the drive motor, and a first guide member connected to the drive member when the drive member moves forward. The first, which can move up and down and that moves up and down when returning
A slider, a second slider arranged above the first slider and slidable along the first guide member, and a second guide provided on the opening / closing body side, which includes an assisting mechanism capable of biasing to the open side. A sliding body that can slide up and down along a member, and a link in which links are extended in two directions from the sliding body, and one link is pivotally attached to the second slider and the other link is rotatably attached to the vehicle body side. A mechanism and a locking device that locks the first and second sliders when locked and unlocks when unlocked, and is interlocked with the locking device to lock the first and second sliders when they are raised and lowered. A lock device control mechanism for unlocking the lock device in a locked state, and a first lock device when unlocking the lock device.
A first detection switch that stops the operation of the drive motor by hitting the switch terminal when the slider is at the lowest position,
When the lock device is unlocked and when the second slider, which is assisted by the assisting mechanism and is away from the first slider and is at the highest position, strikes the switch terminal to reverse the drive motor so as to lower the first slider. 2 detection switch and a third detection switch that reverses the drive motor so as to lower the first slider by hitting the switch terminal when the first slider is fully raised and the lock device is locked. An automatic opening and closing device for the opening and closing body.