JPH09235929A - Automobile door checker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of stick slip top the inside of a case of a spring rubber in the case of opening and closing a door by impregnating a rubber sping press-contacting shoes shored in the case to a check plate with a lubricating component. SOLUTION: Shoes 16 and 16 of a door checker C in a state of closing a door are press-contacted to a coated body 6b with rubber springs 17 and 17 in a thin part of a check plate 6. Corresponding to an opening of a door D, the shoes 16 and 16 slide on both sides of the coated body 6b in the increased direction of the thickness to compress the rubber springs 17 and 17, the rubber springs 17 and 17 are restored and expanded in positions corresponding to notches 10 of the check plate 6, and when the door D is further opened, the shoes 16 and 16 are moved while compressing the rubber springs 17 and 17 again. Since the rubber springs 17 are impregnated with a lubricating component, coefficient of friction of them is reduced, even if the inside of the case 1 is wet, a stick slip phenomenon as the cause of the generation of an abnormal sound is not caused.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle interposed between a vehicle body and a door to control a door opening / closing torque.
The present invention relates to a vehicle door checker that holds a door at a predetermined opening position, and particularly to a case fixed to one of a vehicle body and a door, and a case movably penetrating the case to the other of the body and the door. The present invention relates to an improvement in which a check plate to be connected is provided, and a case that accommodates a shoe that comes into contact with a side surface of the check plate and a rubber spring that exerts elastic force to press the shoe against the check plate.

[0002]

2. Description of the Related Art Such a door checker is known as disclosed in, for example, Japanese Utility Model Laid-Open No. 4-137185.

[0003]

In such a door checker, when the shoe moves on the inclined surface or the uneven surface of the check plate as the door is opened and closed, the rubber spring repeats compressive deformation and restoration, so that the inner surface of the case Inevitably causes friction between and. At this time, if the inside of the case is wet due to infiltration of rainwater or the like, the spring rubber may cause a so-called stick-slip phenomenon in which sticking and rapid sliding are repeated with respect to the inner surface of the case. For example, abnormal noise is generated, which resonates with the door and becomes an unpleasant noise.

To prevent the above phenomenon, it is known that the case is provided with a waterproofing means. However, doing so will complicate the structure and eventually increase the cost, which is suitable for the actual situation. Absent.

The present invention has been made in view of such circumstances, and it is possible to reliably prevent the stick-slip phenomenon of the spring rubber from the inner surface of the case for a long period of time even when the case is wet. It is an object of the present invention to provide the above-mentioned automobile door checker.

[0006]

In order to achieve the above object, the present invention provides a case fixed to one of a body and a door of an automobile, and the other of the body and the door movably penetrating the case. A check plate connected to the check plate, and the case accommodates a shoe that comes into contact with the side surface of the check plate and a rubber spring that exerts elastic force to press the shoe against the check plate.
A door checker for an automobile is characterized in that the rubber spring is impregnated with a lubricating component.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on embodiments of the present invention shown in the accompanying drawings.

First, in FIG. 1, the body B of the automobile is
A door D is rotatably mounted via a hinge H so as to open and close the entrance, in order to provide the door D with an appropriate opening / closing resistance and a plurality of open holding positions between the body B and the door D. Is attached.

As shown in FIGS. 2 and 3, the door checker C has a case 1 fixed to the inner surface of the end wall of the door D with a bolt 2. The case 1 includes a box-shaped case main body 1a having one open end, and a cover 1b which is sandwiched between the case main body 1a and the inner surface of the end wall of the door D while covering the open end. The cover 1b and the case main body 1a are provided with through-holes 4, 5 coaxial with the through-hole 3 opening in the end wall of the door D, and these three through-holes 3, 3 are provided.
The base ends of the check plates 6 passing through 4, 5 are rotatably connected to a bracket 7 via a pivot 8. The bracket 7 has the pivot 8 arranged in parallel with the pivot axis of the hinge H. , Are fixed to the body D with bolts 9.

The check plate 6 is composed of a plate body 6a made of a steel plate which is directly connected to the bracket 7 and a synthetic resin covering body 6b which is mold-bonded to the peripheral surface of the plate body 6a except both ends thereof. Composed. The cover 6b is formed such that the thickness of the check plate 6 is gradually increased from the base end side (the bracket 7 side) toward the free end side, and both side surfaces of the intermediate portion and the free end side end are provided. Are provided with first and second notches 10, 10; 11, 11 for narrowing the check plate 6 in the plate thickness direction, and a stopper 12 is provided adjacent to the second notches 11, 11 on the free end side thereof. 6a.

This stopper 12 is a stopper plate 14 made of a steel plate which is fixed to the plate body 6a by a pin 13.
And a stopper rubber 15 attached to the stopper plate 14 and facing the second notches 11, 11.
A large number of cushion projections 15a protrude from the end faces of the stopper rubber 15 facing the second notches 11,11.

In the case 1, a pair of synthetic resin shoes 16 and 16 are arranged so as to sandwich the check plate 6 in the plate thickness direction, and the shoes 16 and 16 are pressed against both side surfaces of the check plate 6, respectively. A pair of rubber springs 17 and 17 elastically expelled in order to be accommodated.

Each rubber spring 17 is impregnated with a lubricating component as follows. That is, the rubber spring 17
The rubber base material is a polymer having a conjugated diene such as natural rubber, isoprene rubber, butadiene rubber, styrene butadiene rubber, acrylonitrile rubber, and ethylene propylene rubber, or a mixture thereof, which is used as a lubricant component. 1 to 30 parts by weight of a saturated fatty acid amide is contained, and this is molded and vulcanized. At this time, the friction coefficient of the surface of the rubber spring 17 is changed by changing the content of the unsaturated fatty acid amide, and the desired lubrication characteristic is given to the spring. Further, by changing the mixing ratio of the polymer, the extraction speed of the lubricating component on the surface of the rubber spring 17 is changed, and the holding life of the surface lubrication is controlled.

Next, the operation of this embodiment will be described. In the closed state of the door D, the pair of shoes 16, 16 of the door checker C are pressed against both side surfaces of the cover 6b by the elastic force of the rubber springs 17, 17 at the portion where the plate thickness of the check plate 6 is relatively thin. There is.

Then, when the door D is opened, the shoes 16 and 16 slide on the both side surfaces of the cover 6b in the direction of increasing the plate thickness in response to the opening, and the rubber spring 1 accordingly.
7 and 17 are compressed, the clamping force of the shoes 16 and 16 against the check plate 6 is increased due to the increase in repulsive force.
That is, the opening torque of the door D is increased. And the door D
Is opened to a predetermined intermediate opening, and the shoes 16, 16 come to the position corresponding to the first notch 10 of the check plate 6, the rubber springs 17, 17 are restored and expanded, and the shoes 16, 16 are opened. , 11, is elastically engaged,
The door D can be held at the intermediate opening degree by the engaging force.

When the opening force to the door D is further increased, the shoes 16 and 16 move toward the stopper 12 while compressing the rubber springs 17 and 17 again, and the stopper rubber 15 elastically receives the case 1. This defines the fully open position of the door D. At this time, shoe 1
6 and 16 engage the second notches 11 and 11 with the repulsive force of the rubber springs 17 and 17, and can maintain the fully open position of the door D by the engaging force.

As is clear from the above operation, when each shoe 16 moves on the inclined side surface of the check plate 6 as the door D is opened and closed, and when it goes in and out of the notches 10 and 11, the rubber spring 17 is compressed and deformed. Since the expansion is repeated, friction is generated between the contact surfaces of the rubber spring 17 and the case 1.

Since the rubber spring 17 is impregnated with the lubricating component as described above, a part of the component is exposed on the surface of the rubber spring 17 and the friction coefficient thereof is significantly lowered. Therefore, even if the inside of the case 1 is wet due to infiltration of rainwater or the like, the rubber spring 17 smoothly slides on the inner surface of the case 1 and does not cause a stick-slip phenomenon that causes abnormal noise. Moreover, due to the wear of the rubber spring 17, a new lubricating component is exposed on the surface of the rubber spring 17, so that the low friction coefficient of the surface can be maintained for a long period of time.

The present invention is not limited to the above embodiment, and various design changes can be made without departing from the scope of the invention. For example, the case 1 is fixed to the body B side,
The bracket 7 of the check plate 6 can be attached to the door D side. Further, the shoe 16 may be provided with a roller that rolls on the check plate 6.

[0020]

As described above, according to the present invention, a rubber spring, which is housed in a case and elastically springs a shoe in a pressure contact direction with a check plate, is impregnated with a lubricating component.
The surface of the rubber spring can always maintain a low coefficient of friction regardless of its wear. Therefore, even if the inside of the case gets wet due to infiltration of rainwater, etc., the rubber spring has a stick-slip phenomenon with respect to the inner surface of the case. It can slide smoothly without causing noise, can prevent the generation of abnormal noise, and does not complicate the structure, and can ensure maintenance-free.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part of an automobile equipped with a door checker of the present invention.

FIG. 2 is a partially longitudinal side view of the door checker.

FIG. 3 is a view taken in the direction of arrow 3 in FIG. 2;

[Explanation of symbols]

 B body C door checker D door 1 case 6 check plate 16 shoe 17 rubber spring

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Toshifumi Miyazaki 4-13-3 Owada, Niiza City, Saitama Prefecture

Claims (1)

[Claims] 1. A case (1) fixed to one of a body (B) and a door (D) of an automobile, and the body (B) and the door (D) penetrating the case (1) in a movable manner. And a check plate (6) connected to the other of the check plate (6), and the case (1) has a shoe (16) contacting the side surface of the check plate (6) and the shoe (16) pressed against the check plate (6). A door checker for an automobile, which houses a rubber spring (17) that exerts elastic force so that the rubber spring (17) is impregnated with a lubricating component.