JPS6366697B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a weather strip mounting method for the purpose of stopping water flowing through the mounting portion of a weather strip attached to a flange around an opening such as a trunk or back door of an automobile. It is related to.

Conventionally, the weather strip 3 attached to the periphery of the opening 2 has a U-shaped mounting portion 4 that sandwiches the flange 1 on the periphery of the opening, as shown in FIGS. 3 and 4. installed. Further U
Adding an explanation to the letter-shaped mounting part 4, the mounting part 4 is an extrusion molded product made of a polymeric material made of rubber or synthetic resin, in which a metal core material 6 is installed as necessary. On the inside of the leg 5, one or more rows of claw-like flange locking claws 7 are arranged in a row in the longitudinal direction and are inclined inwardly. When attaching the weather strip 3, when the mounting part 4 is pushed into the flange 1, the rigidity of the legs 5 themselves and the claws 7
It is fixed to the flange 1 by. That is, the tip of the claw 7 is in pressure contact with the flange 1 to prevent rainwater from entering. However, as shown in FIGS. 1 and 2, the opening flange 1 is
It is not a single sheet of iron, but generally has several welded seams. The joint becomes a sheet metal connection overlapping part F in which flanges are overlapped, and in the overlapping part F, steps G and H are generated by the thickness of the iron plates. Therefore, the tips of the pawls 7 do not fit in the stepped portions G and H, creating gaps between the pawls 7 and the flange 1, allowing rainwater and the like to penetrate. The behavior of the claw 7 is shown in FIGS. 4 to 6. Conventionally, various countermeasures have been considered against the intrusion of water J, such as filling the space 8 of the mounting part 4 with a sealant 9 as shown in FIG. 7, or changing the material and shape of the claw 7. All of these methods were technically difficult, resulting in high component costs and a large number of man-hours, so they were not perfect for practical use.

Therefore, the present inventor laminated a thin synthetic resin film on a low-density foam or sponge, and then used a pressure-sensitive adhesive to eliminate the gap between the flange and the nail, thereby preventing rainwater from penetrating. It was successful in water.

A first embodiment of the present invention will be described based on FIGS. 8 to 14.

First, the laminate used in this embodiment will be explained with reference to FIGS. 8 to 10 and 12. The laminated product 14 is a strip-shaped film 11...
For example, a polyester film with a thickness t = 0.05 m/m (the drawing is exaggerated and thick for clarity)......a pressure-sensitive adhesive layer 12 on one side.
(exaggerated and thick in the drawing for clarity) is provided, leaving both ends of the film 11, and a low modulus sponge 10 made of semi-closed cells and semi-open cells, that is, semi-single open cells...For example, Thickness T
= 3m/m, specific gravity 0.15 (for example, Nitto Electric Industry Co., Ltd. EPT Sealer No. 685)...... pasted,
Peeling material 1 is placed on the exposed adhesive layer at both ends of the film 11.
3 has been pasted.

After peeling off the stripping material 13, the laminated product 14 is made by taking both ends of the film 11 with left and right fingers and pulling them in the longitudinal direction so that the sponge 10 surface is attached to the overlapping part F of the flange 1 as shown in FIG. and its both ends are glued to the flanges 1, 1, as shown in FIG. At this time, the sponge 10 is compressed in the direction of decreasing its thickness due to the tensile stress of the film 11, and the surface of the sponge 10 is in close contact with the surface of the flange 1 in a compressed state, and even if there is a slight unevenness, the flange 1 and the sponge 10 are There is no gap between the two.

The widths of the sponge 10 and the film 11 are approximately equal to the width of the flange 1, and the length dimensions of the sponge 10 and the film 11 are as shown in FIG.
0 is longer than the length of the overlapping part F of the flange at both ends by K and L (for example, K and L = 10 m/m), and furthermore, the film 11 is longer than the sponge 10 by M and N (for example, M and N = 10 m/m). It has been made longer.

Then, the film 11 is pressed in the direction of the flange 1 while being slightly stretched in the longitudinal direction (of course, the sponge 10 is also stretched).
By adhering both ends M and N to the flange 1, the film 11 is crushed and becomes watertight, and fills the gaps P and Q between the steps G and H. Moreover, the film 11 is made of polyester resin which has a certain degree of rigidity, and the gaps P and Q between the steps G and H are eliminated very smoothly and naturally as shown in FIG. Therefore, even when the mounting part 4 of the weather strip 3 is pushed into the flange 1, as shown in FIG. 14, the claw tip 7a follows the curve of the surface of the film 11 very naturally, and water is sufficiently penetrated for practical purposes. It can provide a water-stopping effect.

Based on FIGS. 15 and 16, the second embodiment of the present invention
An example will be explained. In this embodiment, the width of the film 11 is extended upward, and the extended portion is bent toward the back side of the flange 1.
In this way, the weather strip 3 can be easily inserted.

As described above, the weather strip attachment method according to the present invention has a U-shaped attachment part 4 made of a polymeric material attached to the flange 1 on the periphery of the opening 2 of the automobile body, and has a U-shaped attachment part 4 attached to the inside of the U-shaped leg 5. When attaching the weather strip 3, which has at least one row of flange locking claws 6 connected in the longitudinal direction, to the flange 1 by inserting it into the flange 1, the weather strip 3 is attached to the flange 1 with an appropriate length and width for the sheet metal connection overlapping part F of the flange 1. A semi-cell foam sponge 10 made of a polymeric material having a foam is brought into contact so as to fill the gaps P and Q formed on the sides of the flange overlapping portion F, and a smooth foam sponge 10 appropriately protrudes from both ends of the sponge 10 in the longitudinal direction. Synthetic resin films 11 are stacked, and both ends of the films 11 are attached to the flange 1 while being stretched in the longitudinal direction. After the films 11 are gently attached to the outside of the overlapped portion F via the sponge 10, the above-mentioned weather strip 3
The U-shaped mounting part 4 is installed to prevent water from passing through, and is used to prevent weather stripping caused by the steps G and H at the periphery of the opening 2 of the automobile body, especially at the flange overlapping part F. A laminated product 1 consisting of a sponge 10 and a film 11 with an adhesive layer 12 interposed in the flange overlapping part F is used to solve the problem of intrusion of water J such as rainwater from the part 4.
4 and attaching the weather strip 3 completely eliminates the problem, and is highly effective in stopping water flowing through the water.

[Brief explanation of drawings]

Figure 1 is an elevation view of the car with the weather strip removed, Figure 2 is a detailed perspective view of section A in Figure 1, and Figure 3 is equivalent to Figure 2 with the weather strip installed. Figure 4 is a sectional view taken along line B-B in Figure 3, and Figure 5 is a sectional view taken along line C-C in Figure 3.
6 is a plan view cut along line DD in FIG. 3. FIG. FIG. 7 is a diagram corresponding to FIG. 5 of a conventional weather strip that takes measures against water penetration. 8 to 14 show a first embodiment of the present invention, in which FIG. 8 is a partially cutaway front view of the laminate, FIG. 9 is a plan view of the laminate, and FIG. 10 is a laminate. 11 is a perspective view of the flange overlapping part with the laminated product attached, and FIGS. 12 to 14 are E-E in FIG. 11 showing the process of attaching the weather strip. FIG. FIG. 15 is a perspective view showing a modified example of the laminate, and FIG. 16 is a perspective view of a flange overlapping portion to which the laminate of FIG. 15 is attached. 1...flange, 3...weather strip,
4...Mounting part, 5...Legs, 7...Claws, 10...Sponge, 11...Film, F...Overlapping part,
P, Q... void.

Claims (1)

[Claims] 1. A weather strike having a U-shaped mounting part made of a polymeric material that is attached to a flange around an opening of an automobile body, and at least one row of flange locking claws arranged in a row in the longitudinal direction on the inside of the U-shaped leg. When attaching the lip to the flange by inserting it into the flange, a semi-cell foam sponge made of a polymeric material with an appropriate length and width is placed on the side of the flange overlapping part. A smooth synthetic resin film is placed on top of the sponge so as to fill the gap between the ends of the sponge, and a smooth synthetic resin film that protrudes appropriately from both ends of the sponge in the longitudinal direction is attached to the flange with both ends of the film stretched in the longitudinal direction. 1. A method for attaching a weather strip for water stopping through water, characterized in that the U-shaped attachment portion of the weather strip is attached after the weather strip is gently attached to the outside of the weather strip using a sponge.