JPS58110777A - Connecting part structure in automatic door opening and closing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connecting structure in an automatic door opening/closing device that automatically opens and closes doors of automobiles, etc.

Conventionally, in this type of device that automatically opens and closes doors, one end of the push rod is pivoted on the vehicle body side slightly off to the side of the axis of the door hinge, and the other end is pivoted inside the door. It is connected to the arm and further links the arm to suitable drive means.

The arm is rotated by a drive means to push or pull the pushing rod in the axial direction to open and close the door.

In such a structure, as the door opens and closes by rotating the arm, the connecting end of the push rod and the arm is moved vertically by the swinging of the arm, and as the door opens and closes, It is moved so that it is swung from side to side.

For this reason, in the past, a universal joint was used for the connection between the push rod and the arm, or a
- There was a gap on the left and right sides of the bottom.

However, the former has a complicated mechanism and is expensive, and the latter has the disadvantage that the connecting part rattles and rattles occur during driving or when opening/closing the door.

SUMMARY OF THE INVENTION The present invention aims to eliminate the above-mentioned drawbacks and provides a structure for connecting a pushing rod and an arm, which has a simple structure and provides smooth operation.

In order to achieve this object, the present invention has an elongated hole bored in either the arm or the pushing rod, and connects the arm and the pushing rod with a connecting shaft loosely inserted into the elongated hole. This is characterized in that an elastic member having a biasing force in the axial direction is attached to the connecting shaft.

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

(1) is a center pillar of an automobile body, and a rear door (4) can be opened and closed by a pair of upper and lower door hinges (6) equipped with a vertical pivot (2) on the rear outer surface of the center pillar (1). is attached to.

An automatic door opening/closing device is stored in a predetermined position in a room (5) formed by an outer ξ flannel (4a), an inner flannel (4b), and a front end plate (4C) that constitute the door (4). has been done.

Reference numeral (6) denotes a motor serving as a driving source, which is powered by a battery, and can be rotated forward or reverse by operating a switch (as shown) located in the driver's seat or the like.

One output shaft (6a) of the motor (6) is connected to the connecting rod (7).
It is connected to a reducer (8) with a clutch through the reducer (8), and an electromagnetic clutch (path shown) built into this reducer (8) connects the connecting rod (7) and the output gear (9). The link can be cut off when desired.

Unfortunately, the other output shaft (6b) of the motor (6) has a closure device (not shown) to operate the 1st arrow (path shown) and is not directly related to the present invention.
Detailed explanation will be omitted.

(10) is a sector gear in the shape of a fan, and the base plate (13a) is fixed to the inner panel (4b).
It is pivoted at its center with a horizontal shaft (11) protruding from the top.

The sector gear (10) has teeth (10a) at the lower end of the arc shape that mesh with the output gear (9) of the speed reducer (8).
is engraved.

The upper rear edge of the sector gear (10) has a forked protrusion (
10b) are arranged in series, and between the projecting pieces (10b), an L-shaped rotating piece (12) facing toward the inside of the vehicle is mounted so as to be freely rotatable toward the front.

A lock release device (1 ro) that can be engaged with and disengaged from the upper end of this rotating piece (12) is pivotally attached to a base plate (1 roa) fixed to the inner ξ flannel (4b).

This lock release device (13) is provided at the free end of the door, engages with a striker (path shown) fixed to the vehicle body, and connects a cable (
13b).

A bead (14) that faces toward the inside of the vehicle is protruded from the front of the upper end of the sector gear (10).

(15) is a thin plate arm having a substantially triangular shape, and its base is parallel to the sector gear (10) and has the same axis (11).
). One end of a torsion spring (16) wound around this shaft (11) is hung on the rear edge of the arm (15), and the other end is hung on the upper front edge of the sector gear (10).

The return force of the torsion spring (16) causes the pin (14) of the sector gear (10) to come into contact with the front edge of the arm (15).

FIG. 2 and FIG. 6 show the structure of the connecting portion which is the main part of the present invention, and this structure will be explained in detail below.

At the upper end of the arm (15), there is a vertically elongated hole (
17) is perforated.

The tip of this push rod (18) is connected to the front end plate (
Center pillar (1) that penetrates through 4c) and protrudes outside the door, and is slightly deviated laterally from the pivot (2) of the door hinge (6).
It is pivotally connected with a pivot (20) to a bracket (19) attached to the bracket (19).

A vertical plate-shaped sliding portion (18a) is provided at the base end of the push rod (18).
) is formed, and a pin hole (21) is bored in the center thereof.

(22) is a connecting shaft, and one end of the cylindrical shaft (22a) has a disc-shaped head (22b), and the other end has a cylindrical shape with a smaller diameter than the shaft (22a). The engaging part (
22c) are provided in series.

Thus, the shaft (22a) is loosely inserted into the elongated hole (17) with the Watsunya (23) and the elastic member, that is, the coil spring (24) loosely fitted into the shaft (22a), and the retaining portion (2
2c) loosely inserted into the pin hole (21), crushing its tip to prevent it from being pulled out, and then tightening the push rod (18) and arm (1).
5) are connected by a connecting shaft (22).

That is, the coil spring (24) has a biasing force in the axial direction of the connecting shaft (22), and the sliding portion (18a) of the push rod (18) is moved by the biasing force of the coil spring (24). (15) so as to be in constant pressure contact with the side surface of the coil spring (15), and can be moved slightly in the left-right direction against the return force of the coil spring (24).

In addition, the shaft portion (22a) of the connecting shaft (22) has a long hole (17).
Since the arm (15) is loosely inserted into the push rod (1
8), it can be moved in the vertical direction.

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

In FIG. 1, in order to open the door (4), a door opening switch is turned on at the driver's seat or the like. Then, the motor (6) rotates and the clutch of the reducer (8) is connected, so that the output gear (9) meshes with the teeth (10a) and moves the sector gear (10) to the opposite direction in FIG. Rotate clockwise.

This initial rotation of the sector gear (10) causes the rotating piece (12) to operate the lock release device (13) to release the door lock (path shown).

Then, the rotating piece (12) comes into contact with the arm (15),
The arm (15) is rotated counterclockwise in FIG. 1, and the push rod (18) connected to this arm (15) is pushed forward.

As shown in FIG. 4, when the push rod (18) moves in the longitudinal direction, the door (4) relatively rotates about the pivot (2) in the direction of the arrow and opens. In this case, the push rod (18
) and the pivot (2) of the door (4) are installed at different positions, so the push rod (18) is tilted with respect to the arm (15) as shown by the imaginary line. Tilts laterally by an angle (α). This push rod (18) and arm (15)
This inclination is allowed by slightly compressing the coil spring (24).

Furthermore, as shown in Fig. 2, there is a difference in the trajectories of the arm (15) that rotates around the shaft (11) and the push rod (18) that moves horizontally; is a long hole (17)
It is designed to be resolved by moving up and down inside.

To automatically close the door (4), turn on the door closing switch, rotate the motor (6) in the opposite direction, bring the pin (14) into contact with the arm (15), and push it in the opposite manner as described above. The moving rod (18) is pulled rearward and the door (4) is closed.

As explained in detail above, the present invention eliminates the difference between the vertical trajectories of the push rod and the arm due to the rotation of the arm by using the elongated hole drilled in the arm, and also eliminates the difference in the vertical trajectory of the push rod and the arm due to the rotation of the arm. The configuration is such that the horizontal deflection of the push rod is allowed by compressing a coil spring that is loosely fitted to the connecting shaft.

Furthermore, the push rod is configured to be prevented from wobbling by being urged by the urging force of the coil spring so that the push rod is always pressed against the arm.

Therefore, although the structure is simple, the door can be opened and closed smoothly without rattling noise. It also has the advantage of being easy to manufacture and requiring no effort to assemble.

In the above embodiment, the elongated hole is formed at the upper end of the arm, but it may also be formed on the pushing rod side. Moreover, it goes without saying that a plate spring or an elastic member such as rubber may be used as the coil spring.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view of an automobile door provided with an embodiment of the present invention; FIG. 2 is a front view showing an operating state with only the essential parts of FIG. 1 enlarged; The figure is an exploded perspective view of FIG. 2, and FIG. 4 is a longitudinal sectional view taken along the line XX of FIG. 1. (1) Center pillar (2) Pivot (3) Door hinge (4) Door (10) Sector gear (15) Arm (17) Long hole (18) Push rod (22) Connection shaft
(2ro) Wa 7ya (24) Coil spring

Claims (1)

[Claims] The other end of the push rod, whose one end is pivotally attached to the vehicle body side slightly laterally than the pivot axis of the door hinge, is connected to an arm linked to a drive means, and the swing of the arm causes the push rod to be moved. In an automatic door opening/closing device that opens and closes the door by pushing and pulling, an elongated hole in the vertical direction is bored in either the arm or the pushing rod, and the elongated hole is loosely inserted into the elongated hole. A connection structure in an automatic door opening/closing device, characterized in that an arm and a push rod are connected to each other by a connecting shaft, and an elastic member having a biasing force in the axial direction is provided on the front d-pin connecting shaft.