JP2000002281A - Bumper rubber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify attaching operation of a bumper rubber by blocking an insertion hole by means of a part of divided insertion part. SOLUTION: An insertion portion 4 of a bumper rubber 1 is prepared by arranging a columnar projection 5 at its center portion, and circularly arranging a truncated conical engagement portion 7 divided into two at least in a diametrical direction at its periphery. When a part of the divided engagement part 7 is pressurized by an inner peripheral edge of an insertion hole 8, and is set to the center side, its prevented from setting by abutting against the columnar projection 5. Blocking of the insertion hole 8 is thus prevented, and attachment is smoothly performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bumper rubber which is mounted on an opening / closing body of a vehicle or the like or a member on a mating side thereof and absorbs vibration, impact and sound which should be generated when the body is closed.

[0002]

2. Description of the Related Art It is well known that a bumper rubber is used to minimize the generation of metallic noise, vibration and impact when a door, which is an opening / closing body of an automobile, or a lid of a trunk room is closed. This bumper rubber is made of an elastic body integrally formed with a main body portion and a plug portion to be inserted into a plug hole formed in a vehicle body panel which is an inner surface side of a door or a lid or a mating member. A neck portion corresponding to the thickness of the steel plate is formed between the steel plates.

For example, as shown in FIG. 5, a conventional bumper rubber 10 has a main body 11 having a substantially truncated conical shape having a shaft hole 12, and an insertion portion 13 radially divided into four around a shaft hole 14. It has a substantially conical shape, and is entirely made of an elastic body such as rubber, and has a door or lid 1 between the main body 11 and the insertion portion 13.
A neck portion 15 of the thickness of the steel plate is formed, with which the inner peripheral edge of the insertion hole 16 opened at 7 contacts.

Accordingly, the insertion portion 13 is forcibly pressed into the insertion hole 16 of the door or the lid 17, and the inner periphery of the insertion hole 16 abuts on the neck portion 15 of the insertion portion 13 so that the insertion is prevented from coming off, and the insertion is performed on the door or the lid 17. When the door or lid 17 is closed, the main body 10 abuts on the vehicle body panel and the door or lid 17 itself abuts on the vehicle body panel to minimize the occurrence of vibration, impact or sound that should occur, Or, it softens.

[0005]

However, according to the conventional bumper rubber 10, during the mounting operation of inserting the insertion portion 13 into the insertion hole 16, FIGS. 5B to 5D.
As shown in FIG.
As a result, a part of the neck portion 15 extends to close the insertion hole 16, and as a result, the insertion portion 1
Since it becomes impossible to forcibly press-fit the entire part 3 into the insertion hole 16, the inconvenience that the insertion part 13 has to be once removed from the insertion hole 16 and started over again often occurs. For this reason, the mounting operation of the bumper rubber 10 takes a long time to reduce the work efficiency.

Therefore, the present invention provides a bumper rubber in which a part of the divided insertion portion does not block the insertion hole and does not reduce the efficiency of the mounting operation.

[0007]

A bumper rubber according to the present invention is formed by integrally forming a main body having a predetermined shape with an insertion portion into an insertion hole formed in an opening / closing body or a mating member thereof with an elastic body. In a bumper rubber for absorbing vibration, impact and sound when the opening / closing body is closed, the insertion portion has a columnar projection formed in the main body portion in the axial direction and a diametrical direction around the columnar projection. And a substantially frusto-conical engaging portion formed at least in two parts. Further, the columnar projecting portion protrudes higher in the axial direction than the engaging portion.

Therefore, even if a part of the divided engaging portion is pressed against the inner peripheral edge of the insertion hole and is inclined toward the center, the engaging portion is prevented from abutting on the columnar projection. Part of does not block the insertion hole, and can be installed smoothly.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 3, a bumper rubber 1 according to the present invention has a main body 2 having a shaft hole 9 and formed in a substantially frustoconical shape. A substantially frustoconical insertion portion 4 integrally formed with a neck portion 3 interposed therebetween. The main body 2 is substantially the same as that of the conventional example, and a columnar projection 5 is formed to project from the main body 2 in the axial direction. At least two engaging portions 7 are integrally formed with each other to form the insertion portion 4. Columnar projection 5
Protrudes higher in the axial direction than the engaging portion 7, but since the insertion portion 4 has a substantially frusto-conical shape, it is lower than a completely conical (shown in phantom line in FIG. 1) head. .

A circumferential groove 6a is formed between the columnar protrusion 5 and the engaging portion 6. The groove width A of the peripheral groove 6a is smaller than the groove width B of the dividing groove 6 (A <B). The dividing grooves 6, 6 are not limited to a pair as shown,
Two pairs in the diameter direction, that is, the engaging portion 7 may be divided into four. The diameter of the head of the insertion portion 4 is, of course, the insertion hole 8 to be inserted.
And the diameter of the neck 3 side is smaller than the insertion hole 8.
Is formed to be larger than the inner diameter of.

When the bumper rubber 1 is mounted in the insertion hole 8, as shown in FIG.
Even if the insertion portion 4 is inserted into the insertion hole 8 at an angle, the columnar projection 5 is formed at the center of the insertion portion 4 so that a part of the divided engagement portion 7 is formed. Is pressed by the inner peripheral edge of the insertion hole 8 and moves toward the center (tilts),
It will not be possible to come into contact with the columnar projections 5 (slant).

Moreover, since the columnar projection 5 protrudes higher than the engaging portion 7, even if the engaging portion 7 is compressed and extended, it cannot be blocked by the columnar projection 5 and tilted toward the center. Since the head portion of the engaging portion 7 comes into contact with the columnar projecting portion 5, the engaging portion 7 and the columnar projecting portion 5 are integrated and the insertion portion 4 is inserted into the insertion hole 8.
Acts as a guide for insertion into in this way,
The configuration in which the entire insertion portion 4 acts as an integrated guide is as follows.
It is not applied to the conventional example at all.

Therefore, as shown in FIG. 4 (B), the worker immediately raises the bumper rubber 1 vertically to the insertion hole 8 and forcibly press-fits it as shown in FIG. 4 (C). The engaging portion 7 having a diameter larger than the diameter of the insertion hole 8 is fitted into the insertion hole 8, and the neck portion 3 comes into contact with the inner peripheral edge of the insertion hole 8 to be prevented from coming off, thereby completing the mounting operation. can do.

Thus, by forming the insertion portion 4 in which the substantially frustoconical engaging portion 7 divided in the diameter direction about the columnar projection portion 5 is formed in an annular shape, the insertion hole 8 is inserted. When the insertion part 4 is inserted, the columnar projection part 5 prevents a part of the engagement part 7 from being pressed by the inner peripheral edge of the insertion hole 8 and going to the center side. Since the situation in which the plug 7 blocks the insertion hole 8 does not occur, the mounting operation of the bumper rubber 1 can be performed very efficiently.

It is apparent that the present invention is not limited to doors and lids of automobiles, but can be applied to doors and lids of office supplies such as cabinets and household goods such as storage shelves.

[0016]

According to the present invention described above, a plug-in portion comprising a substantially frusto-conical diametrically divided engaging portion having a columnar projection integrally formed at the center portion is formed. Even if a part of the mating part is pressed by the inner peripheral edge of the insertion hole and inclined to the center side, it is prevented by the columnar projection and cannot be inclined, so a part of the engaging part closes the insertion hole The situation does not occur, so that the operation of mounting the bumper rubber can be performed smoothly.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view showing an embodiment of the present invention.

FIG. 2 is a bottom view of FIG.

FIG. 3 is a front view of FIG. 1;

4 (A), (B), and (C) are longitudinal sectional front views showing a mounting operation of the bumper rubber shown in FIG. 1.

FIG. 5 is a longitudinal sectional front view (A) of a conventional example and longitudinal sectional front views (B) to (D) showing a mounting operation thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Bumper rubber 2 ... Body part 3 ... Neck part 4 ... Insertion part 5 ... Column-shaped protrusion part 6 ... Dividing groove 6a ... Peripheral groove 7 ... Engagement part 8 ... Insertion hole

Claims (2)

[Claims] 1. An opening / closing body or a part inserted into an insertion hole formed in a mating member of the opening / closing body and a body part having a predetermined shape are integrally formed by an elastic body, and vibration and impact when closing the opening / closing body are reduced. In the bumper rubber for absorbing sound, the insertion portion is formed in a columnar projection formed in the main body portion in the axial direction, and is substantially truncated at least two in the diameter direction around the columnar projection. A bumper rubber comprising a conical engagement portion. 2. The bumper rubber according to claim 1, wherein said column-shaped projection portion protrudes higher in the axial direction than said engagement portion.