JPS5920542Y2 - Pivot backlash prevention device for automobile door check arm - Google Patents

Description

[Detailed description of the invention] The present invention is an automobile door checking device in which a sliding member on the door side moves on an arm whose base end is pivoted to a bracket on the vehicle body side. This invention relates to a device that prevents rattling noises between a mounting hole at the base end of an arm and a pivot when the arm is opened and closed.

In an automobile door check device in which a sliding member on the door side moves on an arm whose base end is pivoted to a bracket on the vehicle body side, the gap between the mounting hole at the base end of the arm and the pivot This has the disadvantage of producing a rattling sound when the door is opened and closed.

For this reason, some models use an elastic or resin bushing in the gap between the arm mounting hole and the pivot to avoid direct contact between the metal parts. Since the door does not have durability against high loads and the elastic body and bushings break down in a short period of time, it also has the drawback of producing a rattling sound when the door is opened and closed.

This invention was made to eliminate the drawbacks mentioned above.
Hereinafter, explanation will be given based on embodiment figures.

As shown in FIG. 3, the door check device consists of a sliding member provided inside the door 5, which moves on an arm 4 whose base end is pivoted with a pivot 3 to a bracket 2 attached to the vehicle body 1 side. The pressing member 6 is configured to move while receiving resistance along the way.

Horizontal upper and lower pieces 8, 8 are provided above and below the vertical side pieces 13 of the washer frame 10 shown in FIG.
The front face is U-shaped.

On the inner side of the rear end of the upper and lower pieces 8.8, hook pieces 9, 9 having a forward arc shape are formed.
When it is elastically deformed in a horizontal plane, it generates a corresponding elastic force.

This washer frame 10 has a hook piece 9 as shown in FIG. 5A.
, 9, and is clamped to the base end side of the arm 4 such that the mounting hole 7 at the base end of the arm 4 is located in the inner edge of the hook piece opposite to the side piece 13. Some of the
It has entered the mounting hole 7 slightly.

Therefore, the outer circumferential surface of the pivot 3 that fits into the mounting hole 7 is
By coming into contact with the inner edges of the hook pieces 9, 9, the hook pieces 9 are pressed against the periphery of the attachment hole 7, which is always urged in the direction of the side piece 13.

12 is a locking piece provided at the rear end of the side piece 13 of the washer frame 10;
Reference numeral 4 denotes a locking groove for the retaining piece 12 cut into the side surface of the arm 4.

In the device of the present invention having the above-described configuration, the washer frame 10
The inner edges of the forward arcuate hook pieces 9, 9 provided on the inner side of the rear ends of the upper and lower pieces 8, 8 are penetrated through the pivot hole 11 of the bracket 2 and the attachment hole 7 at the base end of the arm 4. Since the inner circumferential surface of the pivot 3 is constantly pressed, the inner edges of the hook pieces 9, 9 keep the pivot 3 pressed around the mounting hole 7, which faces the inner edges of the hook pieces 9, 9.

Therefore, as shown in FIG. 5A, the pivot 3 in the neutral position with respect to the mounting hole 7 at the base end of the arm 4 is pulled when the door 5 is opened, as shown in FIG. 5B. Sometimes, due to the pressing force of the hook pieces 9, the arm 4 moves toward the proximal end of the arm 4 while moving in an arc along the periphery of the attachment hole 7.

Further, as shown in FIG. 5C, even when the arm 4 is pushed by the closing of the door 5, the outer periphery of the pivot 3 is constantly pressed by the inner edges of the hook pieces 9, 9. The arm 4 moves toward the distal end of the arm 4 while making an arc movement along the circumferential edge of the attachment hole 7 facing the inner edge of the arm 4 .

Therefore, rattling noise caused by metal-to-metal collision between the door opening/closing machine pivot 3 and the periphery of the attachment hole 7 of the arm 4 is prevented from occurring.

FIG. 6 shows the device of the present invention installed on the bracket 2' on the vehicle body 1' side.
A pressing member 6' consisting of a roller on the side of the door 5' rolls against the elastic force of a spring 15' on the side edge of an arm 4' whose base end is pivoted at 3' degrees. This shows the case where the washer frame 10' is attached to the pivot point of the arm 4' by the pivot 3' in the same manner as described above. Needless to say, it has the effect of

[Brief explanation of the drawing]

The drawings show an embodiment of the device for preventing backlash of a pivot in a door check arm for an automobile according to the present invention.
The figure is an exploded perspective view, Fig. 2 is a perspective view of the washer frame, Fig. 3 is a plan view, Fig. 4 is an enlarged sectional view taken along the line IV-IV in Fig. 3, and Fig. 5 A, B, and C are each an arm. FIG. 6 is a plan view showing the positional relationship of the pivot with respect to the attachment hole at the base end, and FIG. 6 is a plan view showing another embodiment. 1...Car body, 2...Bracket 1-13
．． 3'...Axis, 4...Arm, 5.
...Door, 6...Press member, 7...
...Mounting hole, 8...Top and bottom pieces, 9...Hook piece, 10...Washer frame, 11...Pivot hole, 12... ... Retaining piece, 13... Side piece, 14... Locking groove.

Claims (1)

[Scope of utility model registration request] In an automobile door check device, a door-side pressing member moves while receiving resistance on an arm with a mounting hole provided at the base end pivoted to a bracket on the vehicle body. A washer frame is provided, which has horizontal upper and lower pieces at the top and bottom of the piece, the front shape is U-shaped, and a hook piece that can be elastically deformed in a horizontal plane is provided on the inner side of the rear end of the upper and lower pieces. , by sandwiching the hook piece to the proximal end of the arm so that the mounting hole is located inside the hook piece with a part of the inner edge of the hook piece located on the opposite side of the side piece slightly intruding into the mounting hole; The inner edge of the hook piece covers the outer peripheral surface of the pivot shaft,
A pivot prevention device for an automobile door check arm, characterized in that the periphery of the mounting hole is pressed at all times.