JPH024756B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic door opening/closing device for an automobile or the like that can automatically open and close a door using an appropriate drive source and also facilitates manual operation.

Conventionally, this type of automatic door opening/closing device
(Refer to Publication No. 8562), the rotational force from a drive source such as a motor is decelerated through a decelerator, and this deceleration power is used to push or pull a push rod, one end of which is connected to the center pillar of the vehicle body. Configured to open and close the door.

Therefore, when opening/closing a door manually, contrary to when opening/closing the door automatically, the operating force for opening/closing the door is transmitted to the reducer, motor, etc. via the push rod, and is added to the opening/closing force of the door. This has the disadvantage that a large amount of force is required and the opening/closing operation cannot be performed smoothly.

In particular, when the door is opened and closed manually, the operating force for opening and closing the door is transmitted to the speed reducer via the push rod, and the speed reducer rotates at a considerably high rotational speed. Therefore, there is a risk that the decelerator will be damaged, and its durability will be reduced.

SUMMARY OF THE INVENTION In order to eliminate the above-mentioned drawbacks, the present invention provides an automatic door opening/closing device configured so that the decelerator, motor, etc. do not operate in conjunction with each other when the push rod moves during manual operation.

That is, the device of the present invention is an automatic door opening/closing device that opens and closes a door by pushing and pulling the other end of a push rod whose one end is pivotally attached to the vehicle body. a drive plate that is movable between a closed door position and an open door position by a drive source with a neutral position as a boundary; a biasing means that constantly biases the drive plate toward the neutral position; and has its free end connected to the other end of the push rod so that it can rotate between a fully closed position and a fully open position, and when the drive plate is in a neutral position, the fully closed and a fully open position, and can be moved to the fully closed position by setting the drive plate to the closed door position, and to the fully open position by setting the drive plate to the open position, respectively. The drive plate and an arm are linked to each other with a required play.

Hereinafter, the present invention will be explained in detail based on an illustrated embodiment.

Reference numeral 1 denotes a center pillar of an automobile body, and a rear door 4 is attached to the rear outer surface of the center pillar 1 so as to be openable and closable by means of a pair of upper and lower door hinges 3 each having a vertical pivot 2.

The automatic door opening/closing device of the present invention is housed in a predetermined position of a room 5 formed by an outer panel 4a, an inner panel 4b, and a front end plate 4c that constitute the door 4.

Reference numeral 6 denotes a substrate, which is fixed to the inner wall of the inner panel 4b. Reference numeral 7 denotes a motor serving as a driving source, which is attached to the substrate 6. The motor 7 has a built-in speed reduction mechanism, and an output shaft end 7b protrudes to the outside of the vehicle from a motor case 7a in which the speed reduction mechanism is built-in, and a pinion 8 is fixed to the output shaft end 7b. .

As shown in FIG. 2, an arm 11 and a drive plate 12 are rotatably supported on a shaft 9 that projects horizontally from the outside of the vehicle of the board 6.

10 is a spacer provided between the substrate 6 and the arm 11.

The drive plate 12 is a thin plate shaped like a "dog" when viewed from the side, and its central portion is supported by the shaft 9, and an upwardly U-shaped cutout groove 12a is formed on the upper edge of the drive plate 12. A backward U-shaped notch groove 12b is provided at the end edge.

Further, a fan-shaped sector gear portion 12c is connected to the lower end of the drive plate 12, and teeth 12d of the sector gear portion 12c mesh with the pinion 8.

The flange 9a formed at the free end of the shaft 9 and the drive plate 1
A coiled spring 1 is wound around the shaft 9 between the
3 is wound. Both leg pieces 13 of coiled spring 13
a, 13b are bent toward the inside of the vehicle, and engage with the upper and lower edges of the notch groove 12b of the drive plate 12, and are shaped like a fan centered on the shaft 9 bored in the base plate 6. It protrudes into the window hole 6a and engages with its upper and lower edges.

In the middle part of the arm 11, there is a pin 1 pointing toward the outside of the vehicle.
4 is provided protrudingly, and this pin 14 is connected to the drive plate 12.
It is engaged with the notch groove 12a with the required play.

15 is a nearly horizontal pushing rod that runs in the front-rear direction;
The middle portion thereof passes through the window hole 16 of the front end plate 4c of the door 4, and the front end thereof is attached to a bracket 17 attached to the center pillar 1 of the vehicle body at a position slightly deviated laterally from the pivot axis 2 of the door hinge 3.
It is pivotally mounted to with a vertical pivot 18.

The rear end of the push rod 15 forms a vertical surface 15a, and this vertical surface 15a is connected to the upper end of the arm 11 with a horizontal connecting pin 19 facing inward and outward directions of the door.

Thus, the drive plate 12 can be operated at the closed door position shown in FIG. 4, the open door position shown in FIG. 3, and the first position intermediate therebetween.
It is movable to the neutral position shown in the figure, and is always urged toward the neutral position by a coiled spring 13.

Note that when the drive plate 12 is in the neutral position, one leg piece 13a of the coiled spring 13 is connected to the notch groove 12.
b simultaneously contacts the upper edge of the window hole 6a, and the other leg piece 13b simultaneously contacts the lower edge of the notch groove 12b and the lower edge of the window hole 6a, moving the drive plate 12 to the neutral position. However, when the drive plate 12 rotates toward the closed door position, the leg piece 13a is held at the upper edge of the notch groove 12b, and the leg piece 13b
engages with the lower edge of the window hole 6a, a force is generated that urges the drive plate 12 toward the neutral position in the counterclockwise direction in FIG. 4, and the drive plate 12 rotates toward the door open position. Then, as shown in FIG.
3 to generate a force that urges the drive plate 12 toward the neutral position in the clockwise direction in FIG. 3.

Further, the arm 11 can be placed in a fully closed position, in which it pulls the push rod 15 into the door 4 to maintain the door 4 in a fully closed state, as shown by a solid line in FIG. As shown, the push rod 15 can be pushed from the door 4 and rotated to the fully open position where the door 4 is kept fully open, and the pin 14 and the notch groove 12a can be rotated.
When the drive plate 12 is in the neutral position, it can freely move between the fully closed position and the fully open position. They are linked to each other with a required play with the drive plate 12 so that when the door opening position is set, the drive plate 12 is forcibly moved to the fully open position.

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

When the door 4 is fully closed, it is in the state shown by the solid line in FIG.

That is, the motor 7 stops, the drive plate 12 is held at the neutral position by the biasing force of the coiled spring 13, the arm 11 is located at the fully closed position, and the pin 1
4 is located near the rear edge of the notch groove 12a.

To open door 4 automatically from this state,
Turn on the switch to open the door from the driver's seat, etc.

Then, a separate automatic door lock release device (not shown or described) disengages the door lock (not shown) provided on the door side and the striker (not shown) fixed to the vehicle body, and then the motor 7 rotates, and the pinion 8 at the output shaft end 7b rotates. Then, the tooth 12d that meshes with this pinion 8
1, the driving plate 12 is rotated counterclockwise in FIG. 1 from the neutral position about the shaft 9 against the biasing force of the coiled spring 13.

Along with this rotation of the drive plate 12, the notch groove 12a
A pin 14 comes into contact with the rear edge of the arm 11, and the arm 11 is rotated forward via the pin 14, thereby pushing a pushing rod 15 connected to the tip of the arm 11 forward. As a result, a force acting on the door 4 that causes it to move away from the vehicle body opens the door 4.

When the door 4 is fully opened, the drive plate 12 reaches the door open position and the arm 11 reaches the fully open position, as shown in FIG. At the same time, the driving plate 12 is rotated clockwise in FIG. 3 by the restoring force of the coiled spring 13, and is brought to the neutral position shown in FIG. 1 while reversing the motor 7 via the pinion 8. Return.

The pin 14 is located near the front edge of the notched groove 12a, as shown by the imaginary line in FIG.

In this state, turn on the switch to close the door,
The motor 7 is reversed and the drive plate 12 is wound around the spring 13.
When the arm 1 is rotated clockwise against the urging force, the front edge of the notch groove 12a engages with the pin 14, and the arm 1
1 to the rear, and the door 4 is closed.

When the door 4 is fully closed, the drive plate 12 reaches the closed door position and the arm 11 reaches the fully closed position, as shown in FIG.
It comes into contact with the leading edge of a.

Thereafter, when the motor 7 is stopped by operating a suitable limit switch (not shown), the drive plate 12 returns to the neutral position due to the biasing force of the coiled spring 13, and enters the state shown in FIG.

Next, a case where the door 4 is opened and closed manually will be described.

When the motor 7 is not energized, the drive plate 12 is in the neutral position, as shown in FIG.
is in a state where it can freely move forward within the notch groove 12a.

That is, even if the arm 11 is rotated forward via the push rod 15 when the door 4 is manually opened, the pin 14 only moves freely within the notch groove 12a and does not move the drive plate 12.

When the door 4 is closed, the pin 14 similarly moves freely within the cutout groove 12a and is not subjected to any load from the drive plate 12 or the motor 7.

In the above embodiment, a pin was provided protruding from the arm, and a notched groove was provided on the drive plate to engage with the pin. However, this is in contrast to the case where a long hole is bored in the arm and the above-mentioned groove is provided on the drive plate. An engagement pin that can freely move within the elongated hole may be provided.

Furthermore, a speed reducer with a built-in crack may be used as the speed reduction mechanism.

As explained in detail above, according to the device of the present invention, the drive source can push and pull the push rod through the drive plate and arm to automatically open and close the door, and it is also possible to open and close the door manually. When opening and closing the door, the drive plate, speed reduction mechanism, and drive source are not interlocked, so the door can be opened and closed smoothly and easily, and the durability of the device is improved.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view of an automobile door showing an embodiment of the present invention, FIG. 2 is a vertical cross-sectional view taken along line X-X in FIG. 1, and FIGS. 3 and 4 are respectively FIG. 2 is a partially cutaway front view showing the device of the present invention shown in FIG. 1 in different operating states; 3...Door hinge, 4...Door, 7...Motor, 8...Pinion, 11...Arm, 12...
Drive plate, 12a, 12b...Notch groove, 13...Coil spring, 14...Pin, 15...Pushing rod.

Claims (1)

[Claims] 1. One end of the push rod is pivotally connected to the vehicle body, and the other end of the push rod is
In an automatic door opening/closing device that opens and closes the door by pushing or pulling the door, it is pivotally mounted inside the door and can be moved between the closed position and the open position by a drive source from the neutral position. a driving plate, a biasing means for always biasing the drive plate toward the neutral position, and a biasing means mounted in the door and having a free end thereof connected to the other end of the push rod to fully close the door; When the driving plate is in the neutral position, it can swing between the fully closed position and the fully open position, and when the driving plate is in the closed position, An automobile characterized by comprising an arm linked to the drive plate and each other with a required play so that the drive plate can be moved to a closed position and to a fully open position when the drive plate is set to an open position. Automatic door opening/closing device in etc.