JP3111747B2 - Automotive weather strip - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather strip which is mounted on a flange of an automobile body by using a double-sided adhesive tape.

[0002]

2. Description of the Related Art A known weather strip of this type is disclosed in Japanese Patent Application Laid-Open No. 61-18537. As shown in FIG. 8, this weather strip W50
In the above, the pair of gripping pieces 52 of the trim portion 51 are formed in an open state, and one side of a double-sided adhesive tape 53 is attached to the inner surface of each of the gripping pieces 52. The release paper 54 on the other side of each double-sided adhesive tape 53 is peeled off, and as shown in FIG. 9, both grip pieces 52 are elastically bent so as to sandwich the flange 55 of the automobile body, and the other side of each double-sided adhesive tape 53 is flanged. By pressing and adhering to the side surface of the 55, the trim portion 51 can be easily assembled to the automobile body.

[0003]

However, according to the weather strip W50, the gripping piece 52 bent so as to sandwich the flange 55 has an elastic force for returning to the open state at the time of molding. . Moreover, the adhesive strength of the double-sided adhesive tape 53 to the flange 55 is not stable until a certain time has passed after the bonding. For this reason, for example, when the pressure of the double-sided adhesive tape 53 against the flange 55 during bonding is weak, the gripping piece 52 is opened immediately after bonding as shown by an arrow in FIG.
There was a problem of peeling off from No. 5.

Accordingly, an object of the present invention is to prevent the gripping piece from opening or tilting after the gripping piece of the trim portion is bonded to the flange of the automobile body with a double-sided adhesive tape, and to the flange of the double-sided adhesive tape. It is an object of the present invention to provide a weather strip for an automobile which can stabilize the adhesive force of the automobile and can be securely assembled to the automobile body.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a weather strip for an automobile according to the present invention comprises a long outside gripping piece and a short inside gripping piece for gripping a flange of an automobile body. A trim portion having a substantially J-shaped cross section having a concave portion formed at the base of the gripping piece; and a double-sided adhesive tape having one side adhered to an inner surface of the gripping piece on the outside of the vehicle. in automobile weather strip to adhere by pressing the surface on the side surface of the flange, the wheel
A support lip is provided at a tip portion of the outer gripping piece, which is bent in contact with a panel of an automobile body, and is provided with a support lip for preventing the gripping piece from being tilted after bonding due to frictional resistance caused by the bending. I do.

The weather strip for an automobile of the present invention is not limited by the mounting site, and is not limited to a weather strip for a trunk, a weather strip for a door opening, a weather strip for a sliding roof, a weather strip for a drip seal, and a door glass run. , A roof side weather strip, and the like. The trim part is, for example, EP
Solid rubber material such as DM (ethylene propylene diene copolymer) is extruded and molded. In this case,
The insert may be omitted for weight reduction. The shape of the gripping piece and the position where the double-sided adhesive tape is adhered are appropriately determined according to the shape of the flange of each part of the automobile body.

The reason why the supporting lip is projected from at least the gripping piece on the outside of the vehicle is that the panel of the automobile body which the support lip contacts is almost always located on the outside of the vehicle. This is because the piece may be covered with the interior material to prevent the piece from opening or tilting. Therefore,
If there is a panel on the inside of the vehicle where the support lip abuts, it is preferable to project the support lip also on the gripping piece on the inside of the vehicle. Further, the “tip portion of the gripping piece” on which the support lip is protruded means not only the tip surface but also the tip portion of the outer surface.

[0008]

According to the automobile weather strip of the present invention, when the gripping piece of the trim portion is adhered to the flange of the automobile body with the double-sided adhesive tape, the support lip protruding from the tip of the gripping piece has the panel of the automobile body. Because of the frictional resistance between the support lip and the panel, the gripping piece can be prevented from being opened or tilted by internal or external force after bonding. Therefore, the adhesive strength of the double-sided adhesive tape to the flange can be stabilized, and the weather strip can be securely assembled to the automobile body.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a first embodiment in which the present invention is embodied in a weather strip mounted on a trunk of an automobile will be described with reference to FIGS. The weather strip W1 has a trim portion 1 having outer and inner gripping pieces 5 and 6 for gripping a flange 42 of an automobile body 41, and an inner surface of the gripping pieces 5 and 6 bonded to a side surface of the flange 42. And a supporting lip 3 protruding from the tip of the gripping piece 5 on the outside of the vehicle and abutting against the panel 43 of the vehicle body 41, and sealing a gap between the body 41 and a trunk lid (not shown). And a hollow seal portion 4.

The trim portion 1 is composed of the gripping pieces 5, 6 and a central portion 7 connecting the gripping pieces. As shown in FIG. 1, these are integrally extruded by EPDM solid rubber into a single shape or a C shape. Is molded. That is, although the gripping pieces 5 and 6 are formed in an open state, in order to make the gripping pieces 5 and 6 easy to bend, each gripping piece 5 and 6 and the central portion 7 are connected by the thin portion 8. I have.

One side of a double-sided adhesive tape 2 is adhered to the inner surfaces of both gripping pieces 5 and 6, respectively. Then, the release paper 9 on the other surface of each double-sided adhesive tape 2 is peeled off, and as shown in FIG. By pressing and bonding to the side surface of the flange 42, the trim portion 1 can be easily assembled to the body 41. At this time, the gripping pieces 5 and 6 have an internal elastic force for returning to the open state at the time of molding.

The support lip 3 is co-extruded with EPDM sponge rubber on the tip end surface of the gripping piece 5 on the outside of the vehicle so as to have a tongue cross section. The hollow seal part 4 is also co-extruded on the upper surface of the central part 7 by EPDM sponge rubber. The support lip 3 of this embodiment is slightly inclined from the tip end surface of the gripping piece 5 to the outside of the vehicle. As described above, when the two gripping pieces 5, 6 are bonded to the flange 42, the support lip 3
Is bent in contact with the panel 43, and adheres to the panel 43 by the elastic force generated by the bending. Due to the frictional resistance between the support lip 3 and the panel 43, it is possible to prevent the gripping piece 5 from opening or tilting due to the internal elastic force or external force after bonding. Therefore, the adhesive strength of the double-sided adhesive tape 2 to the flange 42 can be stabilized, and the weather strip W1 can be securely assembled to the body 41. Note that the interior material 44 covers the gripping piece 6 on the vehicle inner side to prevent opening and tilting.

Next, a second embodiment in which the present invention is embodied in a weather strip mounted on a door opening will be described with reference to FIG. In the figure, the same reference numerals are given to portions corresponding to the respective portions of the first embodiment. The weather strip W2 has a point that the gripping piece 5 on the outer side of the vehicle is formed to be thick, and two support lips 3 are protruded from the tip surface thereof, and the panel 43 of the body 41 is also on the inner side of the vehicle. A point where the support lip 3 is also protruded from the gripping piece 6 on the inside of the vehicle and a hollow seal portion 4 for sealing a gap between the body 41 and a door (not shown) are co-extruded with the gripping piece 5 on the outside of the vehicle. In this point, the second embodiment is different from the first embodiment.

According to the weather strip W2, since the two support lips 3 abut on the panel 43 in the gripping piece 5 on the outside of the vehicle, the opening and the inclination of the gripping piece 5 can be made stronger than in the first embodiment. Can be prevented. In addition, since the support lip 3 abuts on the panel 43 also in the gripping piece 6 on the inside of the vehicle, the opening and inclination of the gripping piece 6 can be more reliably prevented than in the first embodiment.

Next, FIGS. 4 and 5 show a third embodiment in which the present invention is again embodied in a weather strip for a trunk. Also in the figure, the same reference numerals are given to portions corresponding to the respective portions of the first embodiment. The weather strip W3 is formed by extruding the trim portion 1 into a substantially J-shaped cross section, so that a long gripping piece 5 on the outside of the vehicle and a short gripping piece 6 on the inside of the vehicle are not bent as in the first embodiment. And that the double-sided adhesive tape 2 is adhered only to the inner surface of the gripping piece 5 on the outside of the vehicle. The gripping piece 5 on the outer side of the vehicle is formed with a length corresponding to the width of the double-sided adhesive tape 2 that appears in the height direction in the figure,
The gripping piece 6 on the inside of the vehicle is formed such that the tip thereof has a length substantially coinciding with the upper edge of the double-sided adhesive tape 2. EPD which covers the terminal of interior material 44 on the outer surface of gripping piece 6 inside the vehicle
A cover lip 10 made of M sponge rubber is co-extruded.

A recess 11 is formed at the base of each of the gripping pieces 5 and 6 so as to be in contact with the tip of the flange 42. The recess 11 allows the trim portion 1 to be positioned relative to the flange 42 in the width direction during assembly. The center of rotation can be determined. The concave portion 11 of the present embodiment is
The trimming portion 12 is formed to be slightly wider than the thickness of the flange 42 and removes the meat at the base of the gripping piece 6 inside the vehicle so that the trim portion 1 can be smoothly rotated in a state where the trim portion 1 is in contact with the front end of the grip portion 6. Have.

When assembling the weather strip W3, first, as shown in FIG. 4, the concave portion 11 is inserted into the flange 42 with the trim portion 1 inclined with respect to the flange 42. In this case, since the lengths of the gripping pieces 5 and 6 are different, the recess 11 can be smoothly inserted into the flange 1.
In this inserted state, the bottom surface of the concave portion 8 abuts on the distal end surface of the flange 42, and the distal end of the gripping piece 6 on the inside of the vehicle abuts on the right side surface of the flange 42. And the center of rotation are determined.

Subsequently, the trim portion 1 is rotated in the direction of the arrow around the contact portion between the concave portion 11 and the flange 42 to press the gripping piece 5 on the outer side of the vehicle against the flange 42, and the double-sided adhesive tape 2 is pressed.
To the left side of the flange 42. In this case, the recess 1
1 has a thinned portion 12, the base of the gripping piece 6 inside the vehicle does not interfere with the tip of the flange 42, and even if the tip of the gripping piece 6 is slightly bent, its swelling does not occur. Since the meat enters the meat removing portion 12, the trim portion 1 can be rotated at a larger angle, and the gripping piece 5 on the outer side of the vehicle is strongly pressed against the flange 42 to securely attach the double-sided adhesive tape 2 to the flange 42. Can be glued.

According to the weather strip W3, the effect of the support lip 3 similar to that of the first embodiment can be obtained, and the recess 11 determines the position of the trim portion 1 in the width direction with respect to the flange 42 and the center of rotation. In this state, since the trim part 1 is rotated, the weather strip W3 is
Can be easily and accurately assembled at the correct position.

FIG. 6 shows a fourth embodiment in which the present invention is again embodied in a weather strip for door opening. This weather strip W4 is also assembled in the same manner as the third embodiment, and The same effects as those of the example and the third embodiment can be obtained.

The present invention is not limited to the configuration of the above-described embodiment. For example, the shape and thickness of the support lip 3 may be changed as shown in FIG. 7 without departing from the spirit of the present invention. It can be changed and embodied.

[0022]

As described above in detail, according to the automotive weather strip of the present invention, after the gripping piece of the trim portion is bonded to the flange of the automobile body with the double-sided adhesive tape, the gripping piece is prevented from tilting. As a result, the adhesive force of the double-sided adhesive tape to the flange can be stabilized, so that there is an excellent effect that the double-sided adhesive tape can be securely assembled to the automobile body.

[Brief description of the drawings]

FIG. 1 is a sectional view of a trunk weather strip according to a first embodiment of the present invention before assembly.

FIG. 2 is a sectional view after the weather strip is assembled.

FIG. 3 is a sectional view of a weather strip for door opening according to a second embodiment of the present invention.

FIG. 4 is a sectional view of a trunk weather strip according to a third embodiment of the present invention before assembly.

FIG. 5 is a sectional view after the weather strip is assembled.

FIG. 6 is a sectional view of a weather strip for door opening according to a fourth embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a modification of the support lip.

FIG. 8 is a sectional view of a conventional weather strip before assembly.

FIG. 9 is a sectional view after the weather strip is assembled.

[Description of Signs] 1 Trim portion 2 Double-sided adhesive tape 3 Supporting lip 5 Outer side gripping piece 6 Inner side gripping piece 41 Automobile body 42 Flange 43 Panel W1 Trunk weather strip W2 Door opening weather strip W3 Trunk Weather strip W4 Weather strip for door opening

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60R 13/06

Claims (1)

(57) [Claims] 1. A trim part having a substantially J-shaped cross section, comprising a long gripping piece on the outside of the vehicle for gripping a flange of an automobile body, a short gripping piece on the inside of the vehicle, and a concave portion formed at the base of both gripping pieces. and a double-sided adhesive tape one side is adhered to the inner surface of the outer gripping piece, in automobile weather strip to adhere by pressing the other surface of the double-sided adhesive tape to the side surface of the flange, the vehicle outer At the tip of the gripping piece,
A weather strip for an automobile, wherein a support lip is provided so as to bend in contact with a panel of an automobile body and to prevent the gripping piece from being tilted after bonding due to frictional resistance caused by the bending.