JPH01229718A - Door weather strip for automobile - Google Patents

Abstract

PURPOSE:To facilitate work of adhesively mounting a bottom part to an automobile door through a both-side tape preventing a weather strip from extending and contracting by respectively forming the bottom part and a back surface part with hard rubber further a hollow seal part with sponge rubber. CONSTITUTION:A weather strip is provided with a bottom part 1 forming a belt shape, back surface part 2 vertically provided in one side part of the bottom part 1 and a hollow seal part 3 formed striding the back surface part 2 and the bottom part 1. The weather strip is adhesively mounted to the peripheral edge part of an automobile door by a both-side tape 4 glued to the bottom part 1. Here the bottom part 1 and the back surface part 2 are formed by, for instance, hard rubber in 80 deg. or more hardness into almost an L-shaped section. While the rest part, that is, the seal part 3 is formed by sponge rubber. The hard rubber part and the sponge rubber part are integrally formed by double extrusion molding. In this way, the weather strip, being prevented from its extension and contraction in the time of adhesive mounting, is facilitated in the adhesive mounting.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a door weather strip that is attached to the peripheral edge of an automobile door via double-sided tape.

Conventional technology A door weather strip is attached to the door periphery of an automatic IF to provide a seal between it and the opening edge of the vehicle body, but this door weather strip is attached to the door panel using double-sided tape. There is something.

FIG. 2 shows an example of the construction of this type of door weather strip. This door weather strip consists of a bottom part l having a strip shape, a back part 2 erected on one side of the bottom part l, and a hollow seal part 3 formed astride the back part 2 and the bottom part l. The entire body is integrally extruded from sponge rubber. Here, the hollow seal part 3 is pressed against the vehicle body side panel for sealing, and the back part 2 is applied to the hollow seal part 3 by coming into contact with, for example, a door side panel or a part of the sash. It fulfills functions such as supporting force.

A double-sided tape 4 is attached in advance to the back surface of the bottom l, and the double-sided tape 4 is used to adhere to the peripheral edge of the door.

Problems to be Solved by the Invention However, the above-mentioned conventional door weather strips have the following problems:
Since the whole is made of flexible sponge rubber, when adhering with the double-sided tape 4, the operator has to apply pressure little by little with his/her fingers, resulting in very poor workability. Moreover, when adhering the door weather strip little by little in this way, the door weather strip expands and contracts significantly, so near the end of the adhesion process, the length of the weather strip may be too long or too short. Sometimes the strips become sagging.

In addition, since the door weather strip is flexible even when it is installed, when a tensile force is applied to a part of the door weather strip, the double-sided tape 4 may peel off locally and sag, resulting in poor durability. there were.

Means for Solving the Problems Accordingly, the present invention provides a belt-shaped bottom, a back surface erected on one side of the bottom, and a hollow seal formed across the back surface and the bottom. In the automobile door weather strip, which is attached to the periphery of the door with double-sided tape attached to the bottom, the bottom and rear parts are made of hard rubber, and the hollow seal part is made of sponge rubber. It is characterized by being formed in.

Function: By forming the bottom and back portions of hard rubber, expansion and contraction during bonding work can be prevented.

When the back surface is pressed, the bottom portion is pressed over a wide area, making it easier to bond with double-sided tape.

Furthermore, when a part of the tape is subjected to a tensile force in the attached state, the force is widely dispersed, making it difficult for the double-sided tape to peel off.

Embodiment FIG. 1 is a sectional view showing an embodiment of a door weather strip according to the present invention.

As mentioned above, this weather strip has a band-shaped bottom! , a back surface section 2 standing upright on one side of the bottom section l, and a hollow seal section 3 formed across this back section section 2 and the bottom section 1, and the cross-sectional shape as a whole is is not particularly different from the conventional one. The bottom part 1 and the back part 2 are shaped like a road surface and are made of hard rubber with a hardness of 80 degrees or more, for example, and the remaining part, that is, the seal part 3, is made of sponge rubber. .

These hard rubber portions and sponge rubber portions are integrally extruded by known double extrusion molding.

Furthermore, double-sided tape 4 is pasted in advance on the back surface of the bottom portion 1, as in the conventional case, so that it can be adhered to the door peripheral portion.

Now, in the above configuration, when adhering to the peripheral edge of the door, if you press the tip 2a of the hard back part 2 strongly with your fingers, the pressing force will be applied to the bottom! This means that it can be spread over a wide range of areas, making it possible to adhere at coarser intervals than with conventional methods. Moreover, during this adhesion work, the door weatherstrip hardly expands or contracts, and therefore, there is no excess or deficiency at the terminal end or sagging of the door weatherstrip.

In addition, if a tensile force is applied to one part of the door panel while it is attached to the door panel, this door weather strip is less likely to bend than conventional ones, so the tensile force is dispersed widely through the hard rubber part, and both sides It acts by dispersing it over a wide area of the tape 4. In other words, the tensile force acting locally on each part of the double-sided tape 4 is significantly weakened, and the double-sided tape 4 is prevented from peeling off.

Effects of the invention As is clear from the above explanation, the automatic iJ according to this invention
Door weather strips for i can be bonded uniformly if the worker presses them at rough intervals, and there is almost no expansion or contraction during the gluing process, so it is extremely easy to attach to the door periphery. becomes. It is also possible to prevent the door weather strip from sagging due to stretching.

Furthermore, when it is subjected to a tensile force while installed, it is less likely to peel off from the door periphery, improving its durability.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of a door weather strip according to the present invention, and FIG. 2 is a sectional view showing a conventional door weather strip.
FIG. 3 is a cross-sectional view of the strip. l...Bottom part, 2...Back part, 3...Hollow seal part, 4...Double-sided tape. 2 people outside] 4

Claims (1)

[Claims] (1) A belt-shaped bottom part, a back part erected on one side of the bottom part, and a hollow seal part formed astride the back part and the bottom part, and is attached to the bottom part. A door weather strip for an automobile that is attached to the periphery of the door using double-sided tape, characterized in that the bottom and rear parts are made of hard rubber, and the hollow seal part is made of sponge rubber. door weather strip.