JP2001341587A - Weather strip for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weather strip for automobile comprising a solid rubber mounting part inserted into a flange such as a trunk lid part, a back door part or a door opening part and adhered to the flange by a double-coated adhesive tape to have the adhesive tape adhere tightly to irregularities such as steps at the flange for causing hardly defects such as water leaking. SOLUTION: A seat 13 made of sponge rubber is formed integrally on the mounting part 12 made of solid rubber to apply the double-coated adhesive tape 14 to the seat 13. Even if there are steps at the flange 11, the seat 13 tracks fully the steps for having the adhesive tape 14 applied to the step to reduce a clearance (c) at the step for causing hardly defects such as water leaking.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather strip to be attached to a trunk lid or a back door on an AA line of an automobile or a door opening on a BB line as shown in FIG.

[0002]

2. Description of the Related Art A weather strip of this type includes a solid rubber mounting portion which is inserted into a flange at an opening edge of a vehicle body and a door when a trunk lid, a back door or a door (hereinafter referred to as a door) is closed. It consists of a sponge rubber hollow seal part that elastically contacts the panel and seals the gap between the panel, and a metal core with a substantially U-shaped cross section is inserted into the mounting part to increase the holding force. In addition, a claw is protrudingly provided on the inner side to hold the flange in between. However, it is also possible to omit the cored bar and attach the mounting portion to the flange with a double-sided adhesive tape. FIG. 2 shows a structure for mounting a weatherstrip on a trunk lid portion indicated by line AA in FIG. 1, and FIG.
The weather strip mounting structure at the door opening indicated by the line B is shown in each case. After inserting the mounting part 1 or 6 made of solid rubber into the flange 2 or 7, both are attached with double-sided adhesive tape 3 or 8. Mounted. In the figure, 4 or 9 is a hollow seal part made of sponge rubber, and 5 or 10 is a nail piece.

[0003]

When the mounting portion is mounted to the flange at the opening edge of the vehicle body using a double-sided adhesive tape, the weight of the weatherstrip can be reduced by the absence of the core bar, and the case where the flange is gripped and held only by the claw pieces is used. When the thickness and size of the nail pieces vary and become thin or weak, the holding power is weakened, while the use of a double-sided adhesive tape can provide a sufficient holding power. There are advantages such as water prevention measures. However, if there is a step in the flange 2 as in the joint portion in FIG. 4, when the weather strip is attached, the lower portion 2 of the flange 2 or 7 as shown in FIG.
The double-sided adhesive tape 3 or 8 is no longer adhered to a or 7a, and a large gap c is formed. The reason why the large gap c is formed is that the mounting portion 1 or 6 is made of solid rubber, so that it is hard and is hardly deformed even when pressed against the step portion of the flange 2 or 7. The large gap c generated in this way causes a problem such as water leakage.

It is an object of the present invention to provide a weather strip for an automobile in which even if the flange has irregularities such as steps, the above-mentioned gap c is adhered so as to reduce the gap c so that problems such as water leakage hardly occur. Aim.

[0005]

According to the first aspect of the present invention, a solid rubber mounting portion to be inserted into a flange of an opening edge of a vehicle body such as a door, and when the door or the like is closed, the mounting portion elastically contacts a panel such as a door. It consists of a sponge rubber hollow seal part that seals the gap between, and a double-sided adhesive tape attached to the mounting part, after inserting the mounting part into the flange, the mounting part and the flange are double-sided adhesive tape A weather strip for an automobile, which is attached by attaching the double-sided adhesive tape to a pedestal made of a soft material such as sponge rubber provided on an attachment portion.

According to the present invention, even when the flange has unevenness such as a step, the double-sided adhesive tape well follows the unevenness during the pressure bonding, and the repulsive force of the pedestal made of a soft material after the pressure bonding causes the gap between the surface adhesive tape and the flange. Gaps are reduced and water leakage is less likely to occur.

The soft material of the present invention may be formed separately from the weather strip and adhered to the weather strip in a separate step, but is preferably formed integrally with the weather strip at the time of forming the weather strip, similarly to the sealing portion.

The invention according to claim 2 is characterized in that the pedestal according to the invention according to claim 1 is embedded in the mounting portion with the surface exposed to the inner surface of the mounting portion.

According to the present invention, a part of the thickness of the solid rubber layer of the mounting portion, for example, about half of the thickness is replaced by a soft material, so that the flexibility is increased and the followability of the double-sided adhesive tape to the unevenness is improved. The gap c between the double-sided adhesive tape and the flange can be further reduced.

The invention according to claim 3 is characterized in that the pedestal according to the invention according to claim 2 is protruded from the inner surface of the mounting portion.

According to the present invention, the pedestal made of a soft material protrudes into the mounting portion, so that the pressing amount of the pedestal at the time of crimping and the repulsive force of the pedestal after crimping are increased, so that the pedestal can follow irregularities well.

[0012]

FIG. 6 shows a weather strip attached to a flange 11 of a trunk lid portion. A solid rubber attachment portion 12 inserted into the flange 11 has a pedestal 13 made of soft sponge rubber. A double-sided pressure-sensitive adhesive tape 14 is attached to the pedestal 13 with a release paper (not shown) attached to the pedestal 13 while the surface is located on the same plane as the inner surface of the mounting portion 12 and is embedded. In the figure,
Reference numeral 15 denotes a sponge rubber seal portion, and reference numeral 16 denotes a door panel.

As shown in the figure, when attaching the weather strip to the flange 11 of the trunk lid portion, the mounting portion 12 is inserted into the flange 11 in a conventional manner, and the leg of the mounting portion 12 on the side to which the adhesive tape 14 is adhered is attached. In the spread state, the release paper of the adhesive tape 14 is peeled off and pressed against the side surface of the flange 11 to be adhered.

According to the present embodiment, since the mounting portion 12 replaces substantially half of the conventional solid rubber layer with a sponge rubber of a soft material, the flexibility is remarkably improved. Even if there is a step as shown in the figure, the double-sided adhesive tape 14 follows the step well at the time of crimping, and after the crimping, the pedestal 13 made of the sponge rubber pushed in as shown in FIG. The adhesive tape 14 is also adhered to the lower part 11a of the step of the flange 11, so that the gap c between the double-sided adhesive tape 14 and the flange 11 is reduced, so that water leakage hardly occurs.

FIG. 8 shows the weather strip shown in FIG. 6 in which a pedestal 18 made of sponge rubber to which the double-sided adhesive tape 14 is adhered is projected from the inner side surface of the mounting portion 12.

In the weather strip shown in FIG. 9 in which the surface of the pedestal 13 is flush with the inner surface of the mounting portion 12 and the pedestal 13 is embedded in the mounting portion, both end portions of the pedestal 13 are fixed to the mounting portion 12 to restrain the bending. Therefore, when the external force F is applied, the pushing amount becomes δ. However, in the case of the present embodiment, the pedestal 18 protruding from the inner surface of the mounting portion shown by the one-dot chain line also bends at both ends as shown in FIG. When the same external force F is applied, the pushing amount becomes Δ, which is larger than δ. Therefore, the repulsive force for restoring after crimping becomes large, and as shown in FIG.
The bulge of No. 3 is also increased, and the followability to irregularities is further improved. Also, both end portions of the pedestal projecting from the inner surface of the mounting portion can follow the irregularities.

FIG. 12 shows a weather strip attached to the flange 21 of the door opening. A solid rubber attachment portion 22 inserted into the flange 21 has:
A pedestal 23 made of soft material sponge rubber is integrally formed, and a double-sided adhesive tape 24 is attached to the pedestal 23 with a release paper.
Is affixed. In the figure, reference numeral 25 denotes a sponge rubber seal.

[0018]

According to the weather strip according to the first aspect of the present invention, the double-sided pressure-sensitive adhesive tape is stuck on the pedestal made of a soft material, and the pedestal has flexibility even if the flange has unevenness such as a step, so that the pressure-sensitive adhesive is pressed. Sometimes the adhesive tape can follow the irregularities, and after the pressure bonding, the resilience of the pedestal allows the adhesive tape to adhere well to the concave bottom surface of the concave and convex, thereby reducing the gap c in the concave and reducing water. Problems such as leakage can be caused.

According to the weather strip according to the second aspect of the present invention, since a part of the solid rubber layer of the mounting portion is replaced with a soft material, the flexibility is increased and the followability of the double-sided adhesive tape to the unevenness is further improved. The gap c in the concave portion can be made smaller.

According to the weather strip of the third aspect of the present invention, the resilience of the pedestal becomes large after the pressure bonding, so that the followability of the adhesive tape to the irregularities is improved, including the side edges of the adhesive tape. The gap c in the concave portion can be made smaller.

[Brief description of the drawings]

FIG. 1 is a perspective view of an automobile.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a perspective view of a joint portion of a flange.

FIG. 5 is a cross-sectional view of a mounting portion attached to a joint portion of the flange shown in FIG. 4 with an adhesive tape.

FIG. 6 is a cross-sectional view of a weather strip according to the present invention attached to a flange of a trunk lid part.

FIG. 7 is a sectional view taken along line CC of FIG. 6;

FIG. 8 is a sectional view showing another embodiment of the weather strip shown in FIG. 6;

FIG. 9 is an enlarged sectional view of a main part of a pedestal of the weatherstrip shown in FIG. 6;

FIG. 10 is an enlarged sectional view of a main part of a pedestal of the weather strip shown in FIG. 8;

FIG. 11 is a sectional view taken along line DD of FIG. 8;

FIG. 12 is a cross-sectional view of a weather strip according to the present invention mounted on a flange of a door opening.

[Explanation of symbols]

 11, 21, flange 12, 22, mounting portion 13, 18, 23, pedestal 14, 24, double-sided adhesive tape 15, 25, seal portion

Claims (3)

[Claims] 1. Solid rubber mounting portions 12, 22 which are inserted into flanges 11, 21 at the opening edge of a vehicle body, and a panel such as a trunk lid, a back door or a door when the trunk lid, a back door or a door is closed. And sponge rubber hollow seal portions 15 and 25 for resiliently contacting and sealing a gap therebetween, and double-sided adhesive tapes 14 and 24 attached to the attachment portions 12 and 22, respectively.
2 and 22 are inserted into the flanges 11 and 21, and the mounting portions 12 and 22 and the flanges 11 and 21 are attached to the double-sided adhesive tape 1.
In a weather strip for an automobile, which is attached and attached at 4, 24, the double-sided pressure-sensitive adhesive tapes 14, 24 are attached onto pedestals 13, 23 made of a soft material provided on the attachment portions 12, 22. Automotive weatherstrips. 2. A weather strip for an automobile according to claim 1, wherein said pedestals 13, 23 are buried in said mounting portions 12, 22 with their surfaces exposed to the inner surfaces of said mounting portions. 3. The weatherstrip for an automobile according to claim 2, wherein said pedestals (13, 23) protrude from inner surfaces of said mounting portions (12, 22).