JP3104162B2 - Car door checker - Google Patents

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 an automobile door checker that holds a door at a predetermined opening position, and particularly relates to a case that is fixed to one of a vehicle body and a door, and that the case is movably penetrated to the other of the body and the door. The present invention relates to an improvement including a check plate to be connected, wherein a case houses a shoe in contact with a side surface of the check plate and a rubber spring which exerts elasticity to press the shoe against the check plate.

[0002]

2. Description of the Related Art Such a door checker is known, for example, as disclosed in 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 repeatedly compresses and restores the inner surface of the case. Inevitably creates friction between At this time, if the inside of the case is wet due to infiltration of rainwater or the like, a so-called stick-slip phenomenon may occur in which the spring rubber repeatedly sticks and sharply slides on the inner surface of the case. In this case, abnormal noise is generated, which resonates with the door and causes unpleasant noise.

In order to prevent the above-mentioned phenomenon, it is also known to provide a waterproofing means to the case. However, doing so leads to a complicated structure and, consequently, a high cost. Absent.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is possible to reliably prevent the stick-slip phenomenon of the spring rubber against the inner surface of the case for a long time even when the inside of the case is wet. It is an object of the present invention to provide an automobile door checker as described above.

[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 a case movably penetrating the case and the other of the body and the door. The case contains a shoe that contacts the side of the check plate and a rubber spring that exerts elasticity to press the shoe against the check plate.
In a car door checker, the inside of the case is wet
Even if it is in a state, the rubber spring
The rubber spring is impregnated with a lubricating component so that the stick-slip phenomenon can be prevented . In the present invention, the “stick / slip current
An elephant is a shoe with a check plate as the door opens and closes.
The rubber spring moves on the inclined surface or uneven surface of
By repeating shape and restoration, friction between the case inner surface
When it occurs, if the inside of the case is wet,
Rubber repeatedly sticks and sharply slides on the inside of the case
And a phenomenon of generating abnormal noise.

[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, a car body B 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 by bolts 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.
The base ends of the check plates 6 passing through 4 and 5 are rotatably connected to a bracket 7 via a pivot 8. The bracket 7 has the pivot 8 arranged parallel to the pivot axis of the hinge H. Is fixed to the body D by bolts 9.

The check plate 6 is composed of a plate body 6a made of a steel plate directly connected to the bracket 7, and a synthetic resin cover 6b molded around the periphery of the plate body 6a except for both ends. Be 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.

The stopper 12 is a steel plate stopper plate 14 fixed to the plate body 6a with 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, 16 are arranged so as to sandwich the check plate 6 in the thickness direction thereof, and these shoes 16, 16 are pressed against both side surfaces of the check plate 6, respectively. A pair of rubber springs 17, 17, which resiliently move, are housed.

Each rubber spring 17 is impregnated with a lubricating component as follows. That is, the rubber spring 17
Is a polymer having a conjugated diene such as natural rubber, isoprene rubber, butadiene rubber, styrene butadiene rubber, acrylonitrile rubber, ethylene propylene rubber or a mixture thereof alone as a rubber base material. Saturated fatty acid amide is contained in an amount of 1 to 30 parts by weight, which is formed by vulcanization. At that time, by changing the content of the unsaturated fatty acid amide, the friction coefficient of the surface of the rubber spring 17 is changed to give the spring a desired lubrication property. 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 retention 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 is pressed against the both side surfaces of the cover 6b with the elastic force of the rubber springs 17, 17 at a place where the thickness of the check plate 6 is relatively thin. I have.

Then, when the door D is opened, the shoes 16, 16 slide on both sides of the cover 6b in the direction of increasing the thickness in response to the opening of the door D.
Since the shoes 7 and 17 are compressed, the increase in the repulsive force causes the shoes 16 and 16 to pinch against the check plate 6,
That is, the opening torque of the door D is increased. And door D
Is opened to a predetermined intermediate opening, and when the shoes 16, 16 come to a 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 moved to the notch 11 , 11 to resiliently engage,
The door D can be held at the intermediate opening by the engaging force.

When the opening force on the door D is further increased, the shoes 16, 16 move toward the stopper 12 while compressing the rubber springs 17, 17 again, and the case 1 is elastically received by the stopper rubber 15. 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 apparent from the above operation, when each shoe 16 moves on the inclined side surface of the check plate 6 with opening and closing of the door D, and when entering and leaving the notches 10 and 11, the rubber spring 17 compresses and restores. Since the expansion is repeated, friction occurs 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 to significantly reduce the friction coefficient. Therefore, even if the inside of the case 1 is wet due to the infiltration of rainwater or the like, the rubber spring 17 slides smoothly on the inner surface of the case 1 and does not cause a stick-slip phenomenon which causes abnormal noise. Moreover, even if the rubber spring 17 is worn, a new lubricating component is exposed on the surface thereof, so that a low friction coefficient on the surface can be maintained for a long time.

The present invention is not limited to the embodiment described above, and various design changes can be made without departing from the gist of the present 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, a roller that rolls on the check plate 6 can be attached to the shoe 16.

[0020]

As described above, according to the present invention, the case
The shoe is stored and is pushed in the direction of pressing against the check plate.
For the rubber spring that emanatesThe case is wet.
However, there is no stick
To prevent the lip phenomenonImpregnated with lubricating componentsof
So, regardless of the wear of the rubber spring surface,
A low coefficient of friction can always be maintained,
Even if the inside of the case is wet due to
The ring has a stick-slip phenomenon on the inside of the case.
Slip smoothly without waking up, generating abnormal noise
Can be prevented, and the structure is not complicated.
Maintenance free can be secured.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main 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

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Toshifumi Miyazaki 4-13-3 Owada, Niiza-shi, Saitama (56) References JP-A-63-120748 (JP, A) JP-A-7-26286 (JP, A) JP-A-7-101246 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E05C 17/22 B60J 5/04

Claims (1)

(57) [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) movably penetrating the case (1). A check plate (6) connected to the other of the two, and a shoe (16) in contact with the side surface of the check plate (6) and the shoe (16) are pressed against the check plate (6) in the case (1). A door checker for an automobile, in which a rubber spring (17) exhibiting a resilience for storing the rubber spring (17) is provided, even if the inside of the case (1) is wet.
Sticking the inner surface of the case (1) of the pulling (17)
The rubber spring (17) is impregnated with a lubricating component so as to prevent the slip phenomenon .
Automotive door checker.