JPH0331868B2 - - Google Patents

Description

Detailed Description of the Invention The present invention provides an automobile door that can be opened and closed manually or automatically, and maintains the opening position of the door by applying a required resistance force when opening and closing the door. The present invention relates to a door opening holding device for an automatic door opening/closing device.

Conventionally, with this type of automatic door opening/closing device (for example, see Japanese Patent Publication No. 39-22314), sufficient attention has not been paid to the ease of manual door opening/closing operation and to maintaining the opening position of the door. Ta.

When a car door is stopped on a slope or when a gust of wind occurs when the door is opened, the door may open or close without staying in the desired position, which is extremely dangerous. A retention device is needed to provide the necessary resistance to the door and to keep the door open whether operated manually or automatically.

However, in the case of manual operation, it is necessary to provide the necessary resistance force to open and close the door in order to make it easy to open and close, but when the door is opened and closed automatically by a drive source, These resistance forces act as a constant load on the drive source, and the door must be opened and closed against these loads, so there is a problem in that the motor and the like of the drive source must be increased in size.

The present invention solves the above-mentioned difficulties, and when a door is automatically opened and closed by a driving source,
The resistive force should not be a load on the motor, and when opening and closing the door manually, the resistive force should act on the opening and closing of the door and ensure that the door can be held at the desired opening regardless of automatic or manual operation. An object of the present invention is to provide a door opening holding device for an automatic door opening/closing device.

In order to achieve this object, the door open holding device of the automatic door opening/closing device of the present invention has an operating section connected to the other of the vehicle body and the door by a drive means provided on either the vehicle body or the door. By moving the door, the door can be opened and closed automatically, and when the door is opened and closed manually,
In an automatic door opening/closing device, a part of the transmission mechanism from the actuating part to the drive means is driven, and a member of the transmission mechanism that is rotated in conjunction with manual operation of the door is engaged in a radial direction. Output bodies having connecting parts connected thereto are connected, and the output body is rotatably supported on the axis of a rotating body that can be rotated by the driving means, and the engaging part is attached to the rotating body. forming a pair of engaging edges facing both sides of the
A coiled spring is fitted so as to be in sliding contact with a sliding part provided on the inner surface of a suitable cylindrical fixed body disposed coaxially with the rotating body, and both ends of the spring are connected to the engaging part and each engagement part. By inserting them loosely between the mating edges so that they can come into contact with each other, when the door is opened or closed by manual operation, the engaging portion contacts the end of the spring, and the spring expands in diameter to connect with the sliding portion. The sliding contact provides an appropriate resistance force to the opening and closing of the door, and when the door is opened and closed by the driving means, the engaging edge comes into contact with the end of the spring, and the spring contracts in diameter to meet the sliding part. It is characterized by the fact that only a small amount of resistance is generated through sliding contact.

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 door opening holding device of the present invention is housed in a predetermined position of a room 5 formed between an outer panel 4a and an inner panel 4b that constitute the door 4.

Reference numeral 6 denotes a motor serving as a driving means, which is powered by a battery and rotates forward or reverse by operating a switch.

One output shaft 6a of the motor 6 operates a door lock (not shown) via a closure device (not shown), and is not directly related to the present invention, so a detailed description thereof will be omitted.

Another output shaft 6b of the motor 6 is connected to a decelerator 8 with a clutch via a connecting rod 7, and an electromagnetic clutch (not shown) built in this decelerator 8 connects the connecting rod 7. The connection with the shaft 9 is arranged to be interrupted when desired.

A door opening holding device 10 is attached to the protruding end of the shaft 9, the structure of which will be described in detail later.

Reference numeral 11 denotes a sector gear, which is formed by bending a substantially sector-shaped thin plate into a dogleg shape at the center, and is pivotally connected to the inner panel 4b with a shaft 12 at the center. .

The lower end surface of the sector gear 11 has a circular arc shape.
Teeth 11a are engraved to mesh with the door opening holding device.

The rear end of a horizontal push rod 14 serving as an operating portion is pivotally attached to the upper end of the sector gear 11 with a pin 13 .

The front end of the push rod 14 penetrates the front end 4c of the door 4, projects outside the door, and is connected to the door hinge 3 by the pivot shaft 2.
It is pivotally connected by a pivot 16 to a bracket 15 attached to the center pillar 1 which is slightly deviated laterally.

Therefore, by pushing the push rod 14 forward from the door 4, the door 4 can be opened, and conversely, by indexing the push rod 14 to the door 4, the door 4 can be closed. .

Next, in FIG. 2, reference numeral 8a denotes a case of the decelerator 8 which is an attached part, and a shaft 9 is pivotally supported by passing horizontally through a central boss part 8b of the case 8a.

A disk-shaped armature 17 is integrally fixed to the outer periphery of the end of the shaft 9 in the case 8a, and a yoke 18 is attached to the boss portion in the case 8a with a slight gap between the armature 17 and the armature 17. It is rotatably attached to the outer periphery of 8a.

A worm wheel 19 is attached to the outer peripheral surface of the yoke 18.
is externally fitted and fixed, and a worm 20 connected to the connecting rod 7 meshes with the worm wheel 19.

Note that 21 is an annular excitation coil fixed within the case 8a.

By energizing the coil 21, the field is excited, and the armature 17 is attracted to the yoke 18, whereby rotation from the motor 6 is transmitted to the shaft 9, and power is regularly supplied to the coil 21. Then, the adhesion force between the armature 17 and the yoke 18 is lost, and the rotation of the motor 6 is not transmitted to the shaft 9.
That is, the decelerator 8 is configured to perform both an electromagnetic clutch action and a deceleration action.

The tip of the shaft 9 that protrudes outside the case 8a is
Slightly small diameter end portion 9a, prismatic portion 9b, cylindrical projection 9c
The diameter is reduced in three stages.

FIG. 3 shows the structure of this door open holding device 10, and 22 is a pinion that serves as an output body.
An engaging portion 22 that meshes with the teeth 11a of the sector gear 11 and engages with a coil spring to be described later.
A disk 22b having a diameter of 1.a is integrally formed on one side end surface of the disk 22b.

Reference numeral 23 denotes a bottomed cylindrical rotating body with a flange 23a connected to the opening edge thereof, and has a fan-shaped notch 23b wider than the engaging part 22a of the pinion 22, and the notch 23b. On both sides of the
It has a pair of engaging edges 23c and 23d, and a rectangular hole 23e is bored in the center of the cylindrical bottom wall.

24 is a coil spring, and its winding start, winding end, and both ends are bent arms 24a, 24b facing inward.
It is becoming.

Reference numeral 25 denotes a bottomed cylindrical fixed body, and a semicircular arc-shaped flange 25a is connected to the edge of the lower half of the fixed body on the reducer 8 side. A semicircular arc-shaped notch 25b is formed, and the flange 2
A plurality of attachment holes 25c are bored in 5a.

Further, a bottomed cylindrical friction member 26 made of hard synthetic resin is attached to the sliding portion 25d on the inner surface of the fixed body 25, and a circular hole 27 is attached to the closed end of the friction member 26 and the fixed body 25. is drilled.

As shown in FIG. 2, a pinion 22 is loosely inserted into the end 9a of the shaft 9, and a rotating body 23 is inserted into the prismatic portion 9b.
is fixed and prevented from rotating, and the cylindrical projection 9c has a
A fixed body 25 is loosely inserted through a circular hole 27.

The coil spring 24 is fitted between the fixed body 25 and the rotating body 23 so that its outer peripheral surface 24c is in contact with the inner surface of the sliding portion 25d, and as shown in FIG. The bent arm 24a of the rotating body 2
The right bent arm 24b is located between the right engaging edge 23d of the rotating body 23 and the engaging portion 22a. assembled in position.

In addition, as shown in FIG. 2, the sector gear 11
The teeth 11a mesh with the pinion 22. Further, the fixed body 25 is fixed to the side wall of the case 8a of the decelerator 8, which is the part to be attached, with a mounting screw 28 inserted through the mounting hole 25c.

The operation of the apparatus of the present invention configured as described above will be explained.

In FIG. 1, in order to automatically open the door 4 by the driving means, a switch for opening the door is turned on from the driver's seat or the like.

Then, the motor 6 rotates and the clutch of the speed reducer 8 is connected, so that the shaft 9 is rotated clockwise in FIG. 1, that is, counterclockwise in FIG. 5.

Therefore, the engaging edge 2 of the rotating body 23 shown in FIG.
3c engages with the bent arm 24a on the left side of the coil spring 24, and acts to reduce the diameter of the coil spring 24. Therefore, a slight gap S is created between the outer circumferential surface 24c of the coil spring 24 and the sliding portion 25d, and the engagement edge 23c engages with the engagement portion 22a, so that the pinion 22 It rotates without receiving sliding resistance due to friction between the sliding portion 25d and the outer peripheral surface 24c of the coil spring 24.

The sector gear 11 meshing with the pinion 22 rotates counterclockwise in FIG.
4 can be pushed to open the door 4.

To automatically close the door 4, turn on the door closing switch, rotate the motor 6 in the reverse direction, and rotate the shaft 9 in the reverse direction.

In this case, the rotating body 23 rotates in the opposite direction to that described above, and the engaging edge 23d of the rotating body 23 engages the bent arm 24b and the engaging portion 22a of the coil spring 24,
Because it acts to reduce the diameter of the coil spring 24,
The pinion 22 is not subjected to sliding resistance,
Rotate the sector gear 11 clockwise in Figure 1,
The door 4 can be closed by indexing the push rod 14.

When opening and closing the door 4 manually by operating from the door side, the clutch of the reducer 8 is disengaged, the shaft 9 can rotate freely, and no load is applied to the motor 6 and reducer 8. It's summery.

However, if you try to open door 4 by hand,
The sector gear 11 rotates counterclockwise in FIG. 1 via the push rod 14, and the pinion 22 rotates clockwise.

That is, in FIG. 4, the pinion 22 is
The pinion 22 rotates counterclockwise, and the engaging portion 22a rotates counterclockwise together with the pinion 22.

Therefore, the engaging portion 22a presses the right bent arm 24b of the coil spring 24 as shown by the imaginary line, thereby acting to expand the diameter of the coil spring 24.

As a result, the outer circumferential surface 24c of the coil spring 24 whose diameter has been enlarged slides while being pressed against the sliding portion 25d while applying a required resistance force, so that an appropriate resistance force is generated in the door opening operation.

Even when closing the door 4 manually, the same procedure as described above is performed.
Since the engaging portion 22a presses the left bending arm 24a and acts to expand the diameter of the coil spring 24, the outer circumferential surface 24c of the coil spring 24 comes into pressure contact with the sliding portion 25d to exert the required resistance force. It slides while being applied, providing appropriate resistance to door closing operations. Therefore, even if the door is stopped at a desired opening position and a hand is placed through the door, the door will be held at that opening position.

As explained in detail above, the device of the present invention has a relatively simple structure, but when the door is opened and closed manually, an appropriate resistance force is obtained, and when the door is opened and closed automatically, the resistance force is removed and the driving means The door can be opened and closed smoothly without putting any load on the door.

Moreover, whether operated manually or automatically,
The door can be held open and is extremely safe.

Therefore, if the device of the present invention is applied to an automatic door, there is an advantage that the motor for a door opening/closing device of an automobile or the like can be made smaller.

In the above embodiments, the device of the present invention was configured to be mounted on the shaft of the decelerator, but for example,
The sector gear is divided into two parts: a lower half having teeth and an upper half connected to a pushing rod, each of which is rotatably supported by a rotating shaft, and the lower half is connected to a rotating body, The upper half may be used as an output body and may be adhered to the rotating shaft of the sector gear.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the present invention with the door partially cut away, FIG. 2 is a longitudinal cross-sectional view taken along line X-X in FIG. 1, and FIG. FIGS. 4 and 5 are an exploded perspective view showing only essential parts, and are cross-sectional views taken along the line Y--Y in FIG. 2, showing a manual operation state and an operating state of the drive means, respectively. 4...Door, 6...Motor, 8...Decelerator, 9
... shaft, 10 ... door open holding device, 11 ... sector gear, 14 ... pushing rod, 22 ... output body,
22a...Engaging portion, 23...Rotating body, 23c, 2
3d...Engaging edge, 24...Coil spring, 24a,
24b...Bending arm, 25...Fixed body.

Claims (1)

[Scope of Claims] 1. The door can be automatically opened and closed by moving an operating section connected to the other of the vehicle body and the door using a driving means provided on either the vehicle body or the door. In addition, when the door is opened and closed by manual operation, the automatic door opening/closing device is configured such that when the door is opened and closed by manual operation, a part of the transmission mechanism from the actuating part to the drive means is driven. An output body having a radially engaging portion connected thereto is connected to a member that is rotated in conjunction with the member, and the output body is rotated on an axis of the rotation body that can be rotated by the driving means. a pair of engaging edges facing both sides of the engaging portion are formed on the rotating body, and a suitable cylindrical fixed body is disposed coaxially with the rotating body. By fitting a coiled spring so as to make sliding contact with the sliding part provided on the inner surface, and loosely inserting both ends of the spring so that they can come into contact with each other between the engaging part and each engaging edge, When opening/closing the door manually,
The engaging part touches the end of the spring, and the spring expands in diameter and comes into sliding contact with the sliding part, so that a suitable resistance force is applied to the opening and closing of the door, and when the door is opened and closed by the drive means, A door for an automatic door opening/closing device, characterized in that the engaging edge abuts the end of the spring, and the spring reduces its diameter and slides into sliding contact with the sliding part, so that only a slight resistance force is generated. Open holding device.