JPS6154910B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that automatically opens and closes doors in automobiles and other vehicles, and more specifically, the present invention relates to a device that automatically opens and closes doors in automobiles and other vehicles. The present invention relates to a device that automatically releases the locked state of a device.

As a conventional example of such a device, for example, the first
There is a device as shown in the figure.

This device uses a nearly horizontal push rod d, one end of which is pivoted on the side of the vehicle body c that is slightly deviated laterally from the pivot axis b' of door hinge b of door a, and the other end of the pushing rod d, which is approximately horizontal, that pivots its base end into the interior of door a. connected to the free end of the attached arm e, and the arm e
is rotated in the front-rear direction of the door a by forward and reverse rotation of the drive plate f pivotally mounted inside the door a, and the push rod d
A release lever (not shown) that opens and closes the door a by pushing and pulling it approximately in the axial direction and releases the locked state of the latch in the door lock, and the upper end of the drive plate f. , are connected by a flexible cable g such as a wire, and one end of a flexible outer case h that guides the cable g is placed in an appropriate position near the door lock, and the other end of the outer case h is connected to an arm. They are fixed to their upper ends so as to follow the operation of e.

When the door is to be opened, the drive plate f is rotated in the counterclockwise direction in FIG. 1 by the reduction gear j connected to the motor i, and the cable g is pulled and released. Activate the lever to release the door lock.

Next, when the drive plate f further rotates in the forward rotation direction, the pin k comes into contact with the side edge of the arm e, and the arm e
is rotated counterclockwise in FIG. 1, thereby pushing the push rod d out of the door a,
opens the door.

When opening the door, the motor i is reversely rotated to rotate the drive plate f in the reverse direction, which is clockwise in FIG.

As a result, the cable g that had been pulled out from the outer case h is pushed into the outer case h, and the release lever is returned to the inoperative position.
Return the door lock to its original unlocked state.

When the drive plate f further rotates in the reverse direction, the pin l comes into contact with the side edge of the arm e, causing the arm e to rotate clockwise in FIG.
The vehicle is pulled inward, the door is closed, and the vehicle finally returns to its original state as shown in FIG. Similar to Jikoaki
There are publications such as Publication No. 45-8562.

Although this conventional device generally has the above-described structure and operation, it has the following drawbacks.

(1) While the door a is in the open state, the cable g is pulled by the drive plate f, and when the drive plate f is rotated in the reverse direction to close the door, the cable g is pulled for the first time. Since the release lever is designed to be relaxed and returned to the inoperative position, unnecessary loads may be applied to the cables, release lever, etc. over a long period of time, so it is preferable in terms of strength and durability. do not have.

(2) When the door is closed, if the door a closes forcefully and the return rotation of the arm e precedes the return rotation of the drive plate f, the release lever will be in the operating position and the door will be unlocked. There is a risk that the door may close. In such a case, there is a possibility that the door a may open immediately after it is once closed. Furthermore, no measures have been taken to prevent such failure of the release lever to return.

(3) As arm e rotates, outer case h
One end moves and the middle part bends each time the door is opened and closed, which is not only undesirable in terms of durability, but also causes unpleasant noises and causes the outer case h to bend when the door is opened or closed. There is a risk that the device may become stuck and the device may become inoperable.

SUMMARY OF THE INVENTION An object of the present invention is to provide a lock release device for an automatic door opening/closing device that eliminates the above-mentioned drawbacks.

In order to achieve this objective, in the present invention,
A release lever for releasing the locked state of the latch in the door lock, and a release lever pivotably attached to the door in the vicinity of a drive plate similar to drive plate f in the above-mentioned conventional device, are moved to an inoperative position. At one time, the release lever is also in the inoperative position;
In addition, when the release levers reach the operating position, the release levers are connected to each other by appropriate linking means so that the release levers are in the operating position that releases the locked state of the latch, and the release levers are always kept in the inoperative position. A spring is provided at an appropriate position on the door to bias the door, and an engagement position is provided at a key point on one side of the drive plate so as to be able to enter into the rotational trajectory of the release lever, and an engagement position that can be inserted into the rotational trajectory of the release lever. A pawl member that is movable to the disengaged release position and always biased toward the engaged position is pivoted, and when the drive plate rotates in the forward rotation direction, the pawl member releases the release lever. When the drive plate can be kicked to the operating position and the drive plate rotates in the reverse direction, the pawl member comes into contact with the release lever and is pushed to the release position, and the release lever is maintained at the non-operation position. It is designed so that

With this configuration of the present invention, the release lever is only activated at the initial stage of the door opening operation, and the release lever does not have to maintain the door lock in the unlocked state for a long time. Even if the release lever fails to return, the pawl member will push the release lever to the inoperative position when the drive plate rotates in the reverse direction when the door is closed, thereby eliminating the return failure. Moreover, there is an advantage that the outer case that guides the cable does not move and bend every time the door is opened and closed, unlike in the conventional case.

Next, the present invention will be explained based on the embodiments shown in FIG. 2 and below.

In FIG. 2, 1 is a rear door of a car;
2 is a pair of upper and lower door hinges that connect the center pillar 23 and the front end of the door 1; 2a is a hinge for the door hinge 2;

A motor 3 capable of forward and reverse rotation is fixed at a proper location on the inner panel 1a of the door 1. motor 3
The rotating shaft 3a is connected to an input shaft 5 of a speed reducer 4 fixed to a proper position on the inner panel 1a so as to rotate in synchronization with each other.

A worm 6 is fixed to the center of the input shaft 5 of the decelerator 4, and this worm 6 is attached to the decelerator 4.
The worm wheel 7 is engaged with the worm wheel 7 which is pivotally supported in the center of the worm wheel 7. An output shaft 8 is rotatably provided at the center of the worm wheel 7, and an output gear 9 is fixed to an end of the output shaft 8 that projects outside the reducer 4.

Thus, the worm wheel 7 and the output shaft 8 are connected or disconnected from each other via an electromagnetic clutch (not shown) built into the speed reducer 4.

10 is a horizontal axis 11 facing inward and outward directions of the door 1;
A sector gear 12 is formed on the lower edge of the drive plate, which has an arc shape centered on the shaft 11 and meshes with the output gear 9 of the reducer 4. There is.

As clearly shown in FIGS. 2 and 3, the drive plate 1
A pawl member 14 facing toward the inside of the vehicle is pivotally mounted on the upper rear edge of the vehicle 0, with a shaft 13 extending substantially in the vertical direction. This pawl member 14 is wound around the lower end of the shaft 13, and has a coiled spring 15 that is locked at one end to the pawl member 14 and at the other end to the drive plate 10, and is normally indicated by a solid line in FIG. As shown, it faces toward the inside of the vehicle, but the free end is held so that it can be tilted forward, as shown in phantom lines in FIG. 3, if necessary.

A pin 16 protruding toward the inside of the vehicle is provided at the front of the upper end of the drive plate 10.

A base end (lower end) of an arm 17 extending substantially vertically is pivotally attached to a portion of the shaft 11 that is closer to the inside of the vehicle than the drive plate 10 . The middle of this arm 17 is located between the pawl member 14 and the pin 16, and can rotate slightly between them, but is normally in contact with the pin 16 side by the coiled spring 18. The coil spring 18 is wound around the shaft 11, and its one end is locked to the rear edge of the arm 17, and the other end is locked to the front edge of the drive plate 10, so that the drive plate 10 is always rotated clockwise in FIG. It is energizing.

As shown in FIGS. 2 and 4, the free end (upper end) of the arm 17 has a horizontal shaft 19 that faces inward and outward directions of the door 1. The rear end of the rod 20 is pivotally attached. Note that 21 indicates the large-diameter head 19a of the shaft 19 and the pushing rod 2.
This is a compression coil spring compressed around the shaft 19 between the

The middle of the pushing rod 20 passes through a window hole 22 bored in the front end plate 1b of the door 1, and the pushing rod 20
The front end of the door hinge 2 is pivoted about a vertical axis 25 to a bracket 24 fixed to a center pillar 23 of the vehicle body at a position slightly lateral to the pivot axis 2a of the door hinge 2.

Thus, by rotating the free end of the arm 17 forward and pushing the push rod 20 forward from the door 1, the door 1 can be opened, and at the same time, the free end of the arm 17 can be rotated backward. The door 1 can be closed by moving the push rod 20 into the door 1.

As clearly shown in FIGS. 2 and 3, the drive plate 1
A base plate 26 is fixed to the inner panel 1a near 0, and a release lever 28 is pivotally attached to the base plate 26 with a shaft 27 that extends inward and outward directions of the door 1.

The release lever 28 is an arm 2 with an inclined upper edge that can come into contact with a pawl member 14 pivotally mounted on the drive plate 10.
8a, and is normally stopped at the inoperative position shown in FIG. 2, where the lower rear edge abuts a stopper pin 30 protruding from the base plate 26 due to the biasing force of the coiled spring 29.

The coil spring 29 is wound around the shaft 27 , and has one end locked to the stopper pin 30 and the other end locked to the lower front edge of the release lever 28 .
is biased counterclockwise in FIG.

One end of a flexible cable 32 such as a wire inserted into a flexible outer case 31 is fixed to the lower end of the release lever 28 .

The other end of the cable 32 is fixed to the free end of a release lever 34 of a door lock 33 provided at the rear of the door 1.

One end of the outer case 31 is connected to the release lever 28.
The other end of the outer case 31 is fixed to the base plate 26 near the lower end of the release lever 34, and the other end of the outer case 31 is fixed to the inner panel 1a near the free end of the release lever 34.
It guides the cable 32.

The door lock 33 is attached to the side rear frame 3 of the opposing vehicle body.
striker 36 fixed to door lock 3
The door 1 is restrained in the closed state by engagement with a latch 37 provided in the latch 3, and its construction is almost the same as that of a conventional known device.

The release lever 34 has the same function as the release lever in a conventional door lock, and when in the inoperative position shown in FIG. 2, it pulls the cable 32 and rotates in the counterclockwise direction in FIG. By moving the latch 37 to the operating position, the pawl (not shown) that locks the latch 37 can be removed from the latch 37, and the engagement between the latch 37 and the striker 36 can be released. .

The rest of the structure of the door lock 33 is the same as the conventional one, so a detailed explanation will be omitted.

Therefore, the release lever 34 and the release lever 28 are connected to each other by the cable 32, so that when the release lever 28 is in the inoperative position, the release lever 34 is also in the inoperative position, and the release lever 28 is in the inoperative position. They are linked to each other so that the release lever 34 is in the operating position when the operating position is reached by rotating the required angle clockwise in FIG. 2 from the operating position.

Next, the operation of the above embodiment will be explained.

When door 1 is closed, release lever 28
The door lock 33 and the release lever 34 are in the inoperative position, the latch 37 is engaged with the striker 36, and the door lock 33 is in the locked state.

Further, the motor 3 is stopped, the electromagnetic clutch built in the reducer 4 is demagnetized, the drive plate 10 and the arm 17 are stopped at the position shown in FIG. 2, and the push rod 20 is It is stopped and retracted inside the door (1).

To open the door 1 from this state, turn on the door opening switch (not shown) installed in the driver's seat of the car, energize the electromagnetic clutch in the reducer 4, and operate the motor 3 in the forward rotation direction. let

Then, the drive plate 10 is rotated in the forward rotation direction, which is the counterclockwise direction in FIG. 2, via the decelerator 4.

At the beginning of the rotation of the drive plate 10 in the normal rotation direction,
The pawl member 14, which is in the engagement position where it enters into the rotation locus of the arm 28a of the release lever 28, engages the arm 28.
a, and as the drive plate 10 rotates,
Kick the release lever 28 to the operating position.

As a result, the release lever 34 is also rotated to the operating position, which causes the release lever 34 to release the latch 37.
is released, the door lock 33 is released, the striker 36 is released from the latch 37, and the door 1 is slightly opened due to the reaction force of the weather strip.

When the pawl member 14 is removed from the release lever 28,
The release lever 28 returns to the inoperative position due to the biasing force of the coiled spring 29, and accordingly, the release lever 3
4 also returns to the inoperative position.

After the pawl member 14 is removed from the release lever 28,
When the drive plate 10 further rotates in the normal rotation direction, the pawl member 14 comes into contact with the rear edge of the middle portion of the arm 17, causing the arm 17 to rotate counterclockwise in FIG. 20 can be pushed forward of the door 1 to open the door 1.

When the door 1 is fully opened, an appropriate limit switch (not shown) that detects the fully open state of the door 1 is activated, stopping the operation of the motor 3 and demagnetizing the electromagnetic clutch in the speed reducer 4.

To close door 1 from the open state,
Door closing switch installed in the driver's seat, etc. (not shown)
is turned on, the electromagnetic clutch in the reducer 4 is energized and excited, and the motor 3 is operated in the reverse direction.

Then, the drive plate 10 is moved to the second position via the decelerator 4.
The arm 17 is rotated in the reverse direction, which is the clockwise direction in the figure, and as the drive plate 10 rotates, the arm 17
is rotated clockwise in FIG. 2 by the pin 16. Further, due to this rotation of the arm 17, the push rod 20 is pulled into the door 1, and the door 1 is closed.

Immediately before the door 1 is completely closed, the rear surface of the pawl member 14 comes into contact with the upper edge of the inclined arm 28a, so that the release lever 28 is deviated from the rotational trajectory of the release lever 28, and is moved to a disengaged position as shown by the imaginary line in FIG. is pushed by.

At this time, if the release lever 28 has not returned from the operating position to the non-operating position, the claw member 14 ensures that the release lever 28 is rotated back to the non-operating position.

When the pawl member 14 is disengaged from the tip of the arm 28a, the pawl member 14 returns to the original engagement position,
Everything returns to the state shown in FIG.

On the other hand, on the door lock 33 side, the striker 36 engages with the latch 37, and in this state, the latch 37 is latched to the pole, and the door 1 is restrained in the closed state.

When the door 1 is completely closed, an appropriate limit switch (not shown) detects this, and the motor 3
At the same time, the electromagnetic clutch in the decelerator 4 is demagnetized.

Since the present invention is configured as described above,
The following effects can be achieved.

(1) Since the release lever is in the operating position only during the initial momentary period when the drive plate rotates in the forward direction, there is no unnecessary load on the release lever or its linking means, unlike in conventional devices. will not be applied,
It has excellent strength and durability.

(2) Even if the release lever fails to return to the inoperative position, the pawl member will push the release lever toward the inoperative position when the drive plate rotates back in the reverse direction when the door is closed. Therefore, it is possible to eliminate such failure of the release lever to return, which is significant.

Note that the force with which the pawl member pushes the release lever to the inoperative position at this time can be adjusted by changing the strength of the coiled spring 15 in the above-described embodiment.

(3) In the present invention, there is no need to attach an outer case or the like, which is a means for linking the release lever, to the movable arm as in the conventional case. The outer case 31 in the above-mentioned embodiment, which is the linking means for the release lever, only needs to be fixed to the inner panel of the door, which is a fixed part. It will not bend or bend, and there is no risk of damaging its durability or causing malfunction.

Although the embodiments of the present invention have been described above, many design changes can be made to these embodiments.

For example, instead of the pawl member 14 in the above-described embodiment, as shown in FIG. The engagement position shown in FIG.
The arm 28a may be rotated slightly counterclockwise in FIG.

40 is a coiled spring that biases the pawl member 39 toward the engagement position; 41 is a stopper for stopping the pawl member 39 at the engagement position; and 42 is the arm 1;
This is a pin that is protruded from the drive plate 10' and faces toward the inside of the vehicle in order to push the rear edge of the middle portion of the drive plate 7.

Other configurations may be the same as those of the above-described embodiments.

Of course, even with such a configuration, the same functions and effects as those of the above-mentioned embodiments can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of the main parts of an automobile door showing an example of a lock release device in a conventional automatic door opening/closing device, and FIG. 2 is a partially cutaway front view of an automobile door showing a first embodiment of the present invention. FIG. 3 is an enlarged sectional view taken along line - in FIG. 2, FIG. 4 is an enlarged sectional view taken along line - in FIG. 2, and FIG. 5 shows a second embodiment of the present invention. It is a front view of the main part of an example. 1...Door, 2...Door hinge, 10,10'
... Drive plate, 14, 39 ... Pawl member, 17 ...
Arm, 20...Pushing rod, 28...Release lever,
28a...Arm, 32...Cable, 33...Door lock, 34...Release lever, 36...Striker, 37...Latch.

Claims (1)

[Claims] 1. Connect the other end of a nearly horizontal push rod whose one end is pivotally mounted to the vehicle body side to the free end of an arm whose base end is pivotally mounted inside the door, In an automatic door opening/closing device that opens and closes the door by rotating the drive plate by forward and reverse rotation to push and pull the push rod substantially in the axial direction,
a release lever for releasing the locked state of the latch in the door lock; and a release lever pivotally connected to the door in the vicinity of the drive plate, movable between an inoperative position and an operating position, and always biased toward the inoperative position. and a release lever that is interlocked with each other by appropriate linking means, and further includes an engagement position at a key point on one side of the drive plate so that the release lever can enter the rotation locus of the release lever; When the drive plate rotates in the normal rotation direction by pivotally mounting a pawl member that is movable to a disengaged position that is out of the rotational trajectory of the release lever and that is always biased toward the engaged position, When the pawl member can kick the release lever to the operating position and the drive plate rotates in the reverse direction, the pawl member is pushed to the release position and the release lever is placed in the inoperative position. A lock release device for an automatic door opening/closing device, characterized in that the lock is maintained.