JP2001056054A - Weather strip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mount a flange, even if the flange is a sheet of metal plate or a plurality of layered metal plate, and to mount an adhering means on a part to be mounted in a closely adhering state by following differences in level well, even if the plurality of metal plates have differences in level. SOLUTION: This weather strip have a pair of leg parts 11 and is constituted of a main body 13 mounted on a flange 19, soft and low density sponge rubber 15 which is mounted on inner walls of the leg parts 11, projected from the inner walls of the leg parts 11 with a specific gravity 0.1-0.3 and a both-side adhesive tape 16 mounted on the sponge rubber 15. An adhering layer to the flange 19 of the both-side adhesive tape 16 is made of unvulcanized or semi- vulcanized butyl rubber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing material around openings such as doors and trunks and around glass for the purpose of blocking outside air and rainwater, for example, in vehicles such as automobiles and motor boats. The present invention relates to a weather strip used as a trim mounted on the projection to cover the projection.

[0002]

2. Description of the Related Art FIG. 1 shows a back door 1 of a wagon as an example of a place where a weather strip is attached. When the back door 1 is closed, a weather strip attached to a body panel makes a gap between the door and the door. It is designed to be sealed. FIG. 2 shows a conventional weatherstrip, which is made of a solid material and has an inverted U-shaped trim-shaped main body 3 formed by insert-molding a cored bar 2, and protrudes inward on both inner sides of the main body 3. Cushion piece 4
A hollow sealing portion 5 made of a sponge material and protruding from the main body, and an interior lip 6 also made of a sponge material and protruding from the outside of the main body, and the main body 3 is inserted into a flange 7a of a body panel 7, Flange 7a with cushion piece 4
And the interior material 8 with the interior lip 6
To cover the edges. In the figure, 9 is a door panel. Here, the specific gravity of the sponge material usually used for the seal portion 5 and the interior lip 6 is 0.4 to 0.7.

[0003] In the above-mentioned weather strip, a core bar is contained in a main body, but a weather strip without a core bar is also known. Japanese Patent Application Laid-Open No. H10-203265 discloses a trim body made of solid rubber having a pair of legs which can be bent at a thin portion and a groove formed to receive a flange. It has been proposed to attach a material and affix a double-sided adhesive tape thereon.

[0004]

A weatherstrip without a cored bar is lighter than a weatherstrip with a cored bar because it has no cored bar and contributes to improved fuel efficiency. However, the weatherstrip is attached. In the case of a portion to be attached, for example, a flange, not only a sheet obtained by bending a single metal plate but also a sheet obtained by stacking two or three metal plates or a step having a stacked metal plate with a step In the weather strip disclosed in Japanese Patent Application Laid-Open No. 10-203265, a metal plate is not overlapped so as to cope with a flange having a different thickness or a flange having a step.

It is an object of the present invention to provide a weather strip which can be attached to an attached portion such as a flange having a different plate thickness or an attached portion having a step.

[0006]

According to the present invention, a weather strip is used as a sealing material around an opening of a door or a trunk of a vehicle or a motor boat, or around a glass, or as a trim covering a projection such as a flange. A trim-shaped main body having a pair of legs and having an inverted U shape, wherein each leg absorbs, by compression, a thickness of an attached portion formed of at least one metal plate inside. In addition to the above, a cushion means having a high elasticity can be provided so as to protrude from the leg portion, and an adhesive means to be adhered to the mounting portion is mounted on the cushion means.

According to the present invention, when mounting on a portion to be mounted, for example, a flange, not only a flange made of a single metal plate but also a step is formed not only on a flange formed by laminating a plurality of metal plates. The sponge can be absorbed and attached to the flange by compressing the sponge. According to a second aspect of the present invention, in the first aspect of the present invention, the cushion means 15 projecting from each leg has a specific gravity of at least one of which is 0.1 to 0.3. It is characterized by being a density sponge rubber. In the present invention, the specific gravity of the solid low-density sponge rubber is set to 0.3 or less because it is difficult to bend if it exceeds 0.3, it is difficult to cope with a change in plate thickness, and the specific gravity is set to 0. The reason why the sponge has a specific gravity of 0.1 or more is that sponges having a specific gravity of less than 0.1 have various problems in production and are difficult to put into practical use.

According to a third aspect of the present invention, in the first aspect of the present invention, the cushion means 1 protruding from each leg is provided.
5 is characterized in that at least one of them is hollow, for example, sponge rubber. The specific gravity of the material itself may exceed 0.3 as long as the cushion means of the present invention has sufficient elasticity. The adhesive means used in the present invention may be a double-sided adhesive tape, or may be an adhesive applied on the cushion means, such as an epoxy resin.

The invention described in claim 4 is the first to third aspects of the present invention.
In the invention described, the adhesive means provided on at least one of the legs is made of unvulcanized or semi-vulcanized butyl rubber. According to the present invention, the unvulcanized or semi-vulcanized butyl rubber is flexible, so that it is easy to cope with a change in plate thickness, and it is easy to adhere to a flange having a step. The unvulcanized or semi-vulcanized butyl rubber of the present invention may be applied on a cushion means, or the pressure-sensitive adhesive layer on at least one surface of the double-sided pressure-sensitive adhesive tape may be unvulcanized or semi-vulcanized butyl rubber.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. Each of the weather strips shown in each figure shows a weather strip attached around the opening of the back door, similarly to the weather strip shown in FIG. 2, but the present invention is not limited to this, and other doors and The present invention can be similarly applied to a weather strip attached around an opening such as a trunk, a weather strip around glass, or a trim attached to a projection.

The weather strip shown in FIG. 3 has a pair of legs 11, a trim-shaped main body 13 in which the legs 11 can be bent at a thin portion 12, and a hollow seal protruding from the main body. A portion 14, a soft low-density sponge rubber 15 as a cushion means attached to the inner wall of the leg and protruding from the inner wall of the leg, and a double-sided adhesive tape 16 as an adhesive means attached to the sponge rubber 15, Interior lip 1 protruding from the outside of the main body and covering the edge of interior material 8 (see FIG. 2)
7, the main body 13 is made of a solid material not containing a metal core having a hardness of 60 to 85 specified by JIS K 6253 type A, for example, ethylene propylene rubber (EPDM)
The sponge rubber 15 has a specific gravity of 0.1 or more and 0.3
Below, it has a thickness exceeding the thickness of one metal plate constituting the flange which is the portion to be attached, and can absorb at least the thickness of the flange by compression.

FIG. 4 shows a state in which the flange 19 is sandwiched between the legs 11 and adhered by the adhesive tape 16, and the weather strip is attached to the flange 19. The weather strip shown in FIG.
By forming the hollow portion 21 by the
Sufficient elasticity is provided, and the double-sided adhesive tape 16 is attached to the outside of the hollow portion 21. In another embodiment, in the weather strip shown in FIG. 3 or FIG. 5, the side of the double-sided adhesive tape 16 adhered to the flange is unvulcanized or semi-vulcanized butyl rubber.

According to the weather strip of each of the above-described embodiments, the body is lightened by the absence of the cored bar, which contributes to the improvement of the fuel efficiency of the vehicle, and the flange is made of a single metal plate. Even if two or three metal plates are superposed, even if the superposed metal plates have a step, they protrude from the legs, and the specific gravity is 0.1 or more. When the low-density sponge rubber of 0.3 or less has an effect of sufficiently absorbing the change in the plate thickness to enable attachment, and when unvulcanized or semi-vulcanized butyl rubber is used for the double-sided adhesive tape, In addition, the unvulcanized or semi-vulcanized butyl rubber is well deformed in response to the change in the plate thickness, and can be further responded to the change in the plate thickness of the flange and the step.

[0014]

According to the weather strip according to the first or third aspect of the present invention, when mounting to a mounting portion such as a flange, a plurality of metal plates are superposed even if the mounting portion is a single metal plate. The bonding means can be attached to the portion to be attached in a state of closely following the step even if the plurality of metal plates have steps.

If the cushion means is made of low-density sponge rubber having a specific gravity of 0.1 to 0.3, as in the second aspect of the present invention, there is no difficulty in practical use, and it is easy to cope with a change in plate thickness. Become. The effect described above can be further enhanced by using unvulcanized or semi-vulcanized butyl rubber as the bonding means as in the invention of claim 4.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a wagon vehicle.

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

FIG. 3 is a sectional view of a weather strip according to the present invention.

FIG. 4 is a sectional view showing a state where the weather strip shown in FIG. 3 is attached to a flange.

FIG. 5 is a cross-sectional view showing another example of the weather strip according to the present invention.

[Explanation of symbols]

 11 Leg 12 Thin 13 Body 14 Sealing rubber 15 Low density sponge rubber 16 Double-sided adhesive tape 17 Interior lip 19 Flange 21 Hollow

Claims (4)

[Claims] 1. As a sealing material around openings such as doors and trunks of vehicles and motor boats, and around glass.
Alternatively, it is a weatherstrip used as a trim for covering a projection such as a flange, and has a trim-shaped main body 13 having a pair of legs 11 and having an inverted U shape.
1 is provided with elastically elastic cushioning means 15 and 21 which can absorb the thickness of the attached portion 19 formed of at least one metal plate inside by compression from the leg portion 11, A weather strip, on which an adhesive means 16 to be attached to a mounting portion is attached. 2. The cushion means 1 protruding from each leg.
5. The weather strip according to claim 1, wherein 5 is a solid low-density sponge rubber having a specific gravity of at least one of 0.1 to 0.3. 3. The cushion means 2 protruding from each leg.
2. The weatherstrip according to claim 1, wherein at least one of the hollows is hollow. 4. The weatherstrip according to claim 1, wherein the bonding means provided on at least one of the legs is an unvulcanized or semi-vulcanized butyl rubber. .