JP3532522B2 - Weatherstrip and its mounting structure - 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 and its mounting structure, and more particularly to a weather strip mounted to a vehicle body with a clip and a double-sided tape and its mounting structure.

[0002]

2. Description of the Related Art A door weatherstrip mounting structure that uses a clip and a double-sided tape together is used to mount a door constituting a vehicle body of an automobile or the like, or a weatherstrip mounted around a door opening, to a vehicle body side frame. Known (for example, JP-A-9-123760)
Issue). This is in addition to the clip attachment
By using the double-sided adhesive tape together, the adhesion of the weather strip to the frame is improved.

This weather strip is attached to a mounting surface of a vehicle body side door frame with a clip and a double-sided adhesive tape (hereinafter referred to as double-sided tape). The weather strip has a hollow seal portion, a mounting base portion, and a seal lip, and the mounting base portion further includes a clip mounting surface to which a clip is mounted and a tape mounting surface to which a double-sided tape is pre-bonded. . The hollow seal portion exerts a sealing function by being pressed and deformed by the door opening frame. In this case, a plurality of clips are attached to the clip attaching surface of the weather strip at a predetermined interval, and then the double-sided tape is attached to the tape attaching surface.

[0004]

However, in the structure of the above-mentioned weather strip of the prior art, the clip mounting surface and the tape mounting surface are adjacent to each other on the same plane, and when the double-sided tape is attached to the tape mounting surface. Since no special positioning is provided between the clips, it is not always possible to accurately and continuously attach a long double-sided tape. Then, once the double-sided tape is bent and attached, it is necessary to peel off the double-sided tape that has been attached up to that point and to start over again, resulting in a great loss of work and a significant reduction in work efficiency.

Further, in the case of mechanically continuously sticking the double-sided tape to the tape mounting surface, a double-sided tape having a strong adhesive force is used, and a heat-sealing type tape is usually used. Although sticking is performed while blowing hot air, the above-mentioned conventional technology has a problem that the clip is melted by hot air (200 to 400 ° C.), and efficient mechanical sticking work cannot be performed. , I had to attach double-sided tape by hand.

In view of the above-mentioned problems of the prior art, an object of the present invention is to reliably position a double-sided tape in a weatherstrip in which a clip and a double-sided tape are used together, and to accurately position the long-sided tape. Another object of the present invention is to provide a weather strip and a mounting structure for the double-sided tape, in which the double-sided tape can be continuously attached and the double-sided tape can be attached by a mechanical method with high workability without any trouble.

[0007]

The above objects can be achieved by the inventions described in the claims. That is, the characteristic configuration of the weather strip according to the present invention is that the first attachment surface attached to the first attachment surface of the vehicle body by the clip and the vehicle
A first mounting surface of the body, and a second mounting surface that is mounted on the second mounting surface of the vehicle body having a step with double-sided tape, and between the first mounting surface and the second mounting surface. ,Previous
The vertical wall portion having a step of 10 mm or less that exceeds the thickness of the double-sided tape is formed, and the first mounting surface and the second mounting surface are stepwise , and the first mounting surface is also formed. And second mounting
The surfaces are formed substantially parallel to each other.

According to this structure, the double-sided tape can be attached along the vertical wall portion, the position of the double-sided tape can be easily positioned, and the attachment is performed mechanically using the device. Also in this case, it is possible to prevent the sticking position from shifting, and it is possible to continuously stick the long double-sided tape with high accuracy and workability. Moreover, even when the weather strip is attached to the frame or the like on the vehicle body side due to the presence of the vertical wall portion, the positioning thereof becomes extremely easy, and as a result, the attaching accuracy is improved, which is convenient. Moreover, the first mounting surface
The thickness of the double-sided tape between the first mounting surface and the second mounting surface 1
The vertical wall portion having a step of 0 mm or less is formed,
The 1st mounting surface and the 2nd mounting surface are stepwise,
The first mounting surface and the second mounting surface are formed substantially parallel to each other.
As a result, not only can positioning be performed reliably, but also heat fusion
Use double-sided tape of the type to firmly adhere to the vehicle body
In case of clips attached to the first mounting surface
The effect of hot air can be sufficiently blocked and melting the clip
This is convenient because it can be reliably prevented. The difference between the two
Is more preferably 5 mm or less, and is 2 to 3 mm.
It is structurally more preferable to be present.

As a result, when the double-sided tape is attached, and further when the weather strip is attached to the vehicle body, the positioning is surely performed, and the long double-sided tape can be continuously attached with high accuracy and the double-sided tape is also attached. It was possible to provide a weather strip that can be attached to a vehicle body without any trouble by a mechanical method with high workability and that can be attached to a vehicle body with improved accuracy.

[0010]

[0011]

The vertical wall portion is preferably made of hard rubber.

The weather strip is made of a soft material such as foamed rubber in order to improve the sealing property. However, if the weather strip is made of hard rubber, the other portion and the vertical wall are clearly distinguished, and both surfaces are When the tape is attached by a mechanical method, not only the initial positioning setting is easy, but also the tape is made to travel along the hard vertical wall during the attachment work, so that the traveling is more stable and convenient. Is good.

It is preferable that a projecting portion is formed on the vertical wall portion.

According to this structure, since the vertical wall portion and the door frame are brought into contact with each other and a sealing effect can be exerted at this portion, a portion where the double-sided tape is insufficiently adhered on the second mounting surface is assumed. It is convenient that the sealability is not impaired even if a part occurs, and the water impermeability and sound insulation can be maintained high.

Further, a characteristic structure of a weatherstrip mounting structure according to the present invention is a structure for mounting the weatherstrip according to any one of claims 1 to 3 to a vehicle body, wherein the first mounting surface of the weatherstrip is the above-mentioned. The second attachment surface of the weather strip is attached to the first attachment surface of the vehicle body by a clip, and the second attachment surface of the weather strip is attached to the second attachment surface of the vehicle body by a double-sided tape.

According to this structure, when the double-sided tape is attached, the positioning is surely performed, the long double-sided tape can be continuously attached with high accuracy, and the attachment of the double-sided tape has high workability. It is possible to provide a weather strip mounting structure that can be mechanically carried out without any trouble and has improved mounting accuracy on the vehicle body.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a cross-sectional structure of a weather strip according to the present embodiment, and FIG. 2 shows a cross-section of a weather strip mounting structure. FIG. 2 is an A of FIG. 3 showing an automobile to which a weather strip is attached.
-A represents a cross-sectional structure.

<First Embodiment> This weather strip W includes a hollow seal portion 1, an attachment base portion 2 attached to a door frame 10, a door-side seal lip 3, and
A door opening side seal lip 4 and a clip hollow portion 5 are provided.

The hollow seal portion 1 is a door opening frame 1
It is pressed by 3 and deforms to exert a sealing function. The mounting base 2 includes a first mounting surface (clip mounting surface) 2a mounted on the first mounted surface 10a of the door frame 10,
A second mounting surface (tape mounting surface) that is mounted on the second mounted surface 10b of the door frame 10 is provided.

The first mounting surface 2a and the second mounting surface 2b are formed stepwise with a vertical wall portion 2c therebetween, and the second mounting surface 2b is 2 to 3 mm from the first mounting surface 2a. It is located with a step d. Corresponding to this, the door frame 10
A step portion 10d is also provided between the first attached surface 10a and the second attached surface 10 and is similarly formed in a stepped shape. With this configuration, the double-sided tape sticking device, which will be described later, can be mechanically stuck by running the double-sided tape sticking device along the vertical wall portion, and the position of the stuck double-stick tape can be determined. It is easy and can prevent the sticking position from shifting, and can continuously stick long double-sided tape with high accuracy and workability. Further, when the weather strip W is attached to the door frame 10 due to the presence of the vertical wall portion 2c, its positioning becomes extremely easy, and as a result, the attaching accuracy is improved.

A clip 11 is provided inside the first mounting surface 2a.
The clip hollow portion 5 for inserting the clip is formed, and the head portion 11a of the clip 11 is inserted into the hollow portion 5. The shape of the clip 11 is shown in FIG.
A head portion 11a, a shaft portion 11b having a diameter smaller than that of the head portion 11a,
It has a claw-shaped locking portion 11c formed at the tip of the shaft portion 11b. Close to the door opening of the clip hollow part 5,
The hollow seal portion 1 is formed.

The clip 11 can be attached to the weather strip W by pushing in and inserting the head portion 11a of the clip 11 from the shaft hole formed in the clip hollow portion 5 on the door frame 10 side. A large number of the clips 11 are attached at appropriate intervals along the longitudinal direction of the weather strip W (the direction perpendicular to the paper surface) (only one is shown in FIG. 2). Clip 11
Is formed of a resin such as nylon or polyacetal, and by inserting the locking portion 11c into the hole 10c formed in the door frame 10, the locking portion 11c is elastically deformed and can be attached to the door frame 10. it can.

Next, the structure of the double-sided tape 12 will be described with reference to FIG. The double-sided tape 12 (heat-sealing tape) has a four-layer structure, and the liner 12a (release paper), the first
Adhesive layer 12b, acrylic foam tape 12c, second
It is composed of an adhesive layer 12d. Second adhesive layer 12d
Is a portion attached to the second mounting surface 2b of the weather strip. Then, before attaching the weather strip W to the door frame 10, the weather strip W and the double-sided tape 12 are integrated in advance. When attaching (attaching) to the door frame 10, the liner 12a is peeled off and attached to the door frame 10 by the first adhesive layer 12b.

The thickness of the double-sided tape 12 is 0.6 to 1.2 m.
It is about m, preferably about 0.8 mm. Of course, the structure of the double-sided tape 12 is not limited to that shown in FIG. 6, and an appropriate one can be adopted within the scope of the present invention.

<Double-sided Tape Sticking Device> FIG. 5 is a conceptual diagram showing the structure of the sticking device when the double-sided tape 12 is stuck to the weather strip. Weather strip W
After being extruded and molded by a molding device (not shown), the clip 11 is automatically inserted and connected to the mold molding portion to form a loop, which is then set on the sticking machine and conveyed in the longitudinal direction (direction of arrow C) by the conveying mechanism. To be done. A large-diameter cooling and pressure-bonding roller 20 and a cooling and pressure-bonding roller 2 are provided above the transport path.
It is provided with small-diameter guide rollers 21 and 22 circumscribing 0, a supply roller 23, and a jet heater 24 which is a heating means for supplying hot air.

The double-sided tape 12 is sequentially supplied from a winding body (not shown) wound on a reel in the direction of arrow B, and is sandwiched between the end faces of the guide roller 21 and the guide roller 22 in the width direction. Supplied with. Jet heater 2
No. 4 sends hot air of 200 ° C. to 400 ° C. to the second attachment surface 2b of the weather strip and the second adhesive layer 12d of the double-sided tape to incinerate or blow away dust and the like on the surface of the second attachment surface 2b. The adhesive layer 12d is melted and pressed by the cooling and pressure bonding roller 20 to be bonded. The running of the sticking device is performed along the vertical wall portion 2c, and the double-sided tape 12 is stuck to the second mounting surface 2b with high accuracy.

In this case, the first mounting surface 2a and the second mounting surface 2
Even if hot air is supplied to the second mounting surface 2b by the vertical wall portion 2c between the clip 11b and the second mounting surface 2b, the clip 11 does not melt because the effect of the hot air on the first mounting surface 2a is extremely small. The step d depends on the shape of the weather strip,
It is preferably 10 mm or less, more preferably 5 mm.
mm or less, and more preferably 2-3 mm. By doing so, it is convenient because the sealability between the door frame and the weather strip W can be improved and the attachability to the door frame can be secured.

Therefore, there is no problem even if the clip 11 is attached to the first attachment surface 2a in advance. Therefore, it is possible to automate the process from extrusion molding of the weather strip to mounting of clips, connecting to the molding part to form a loop, and attaching the double-sided tape. Further, it is not necessary to degrease and apply the primer before attaching the double-sided tape, which also contributes to cost reduction. Furthermore, since the first mounting surface 2a and the second mounting surface 2b are located on different step planes, the liner 12a can be easily peeled off and the workability is improved.

<Second Embodiment> FIG. 4 shows a weatherstrip mounting structure according to a second embodiment. The difference from the weatherstrip mounting structure of the first embodiment is that the hard rubber 14 having low flexibility is integrally formed at a portion corresponding to the vertical wall portion 2c between the first mounting surface 2a and the second mounting surface 2b. Is attached to. Other configurations are the same as those in the first embodiment.

According to this structure, when the double-sided tape 11 is attached by running the sticking device, not only the initial positioning of the device can be facilitated, but also the sticking device is run along the hard vertical wall portion 2c. Since the running is more stable, the double-sided tape 12 is more conveniently attached to the second mounting surface 2b with higher accuracy. As the hard rubber 14, various types such as unfoamed vulcanized rubber and vulcanized rubber with a low foaming degree can be considered, and it is preferable that the hard rubber 14 has a hardness of about 50 or more.

[Another Embodiment] (1) In the above-described embodiment, a protruding portion extending in the longitudinal direction of the weather strip is provided on the vertical wall portion between the first mounting surface and the second mounting surface. May be. With this configuration, when the vertical wall portion and the step portion of the door frame come into contact with each other, a sealing effect can be exerted on this portion, so that a portion where the double-sided tape is insufficiently adhered on the second mounting surface is assumed. It is convenient because even if a part is generated, it is possible to surely prevent the water impermeability, the sound insulation property and the like from being impaired.

The position of the protruding portion may be any of the vertical wall portions, and may be an end portion other than the central portion. The height is usually about 1 to 4 mm, but is not particularly limited as long as the sealing property with the step portion can be secured. Also, the cross-sectional shape is not particularly limited.

(2) In the above embodiment, an example in which the first mounting surface and the second mounting surface are substantially parallel has been shown, but they do not necessarily have to be parallel, but are inclined and non-parallel to each other. It may be.

(3) The present invention can be widely applied not only to automobiles but also to openings where high sealing performance is desired.

[Brief description of drawings]

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

2 is a cross-sectional view taken along the line AA of FIG. 3 showing a weatherstrip mounting structure using the weather strip of FIG.

FIG. 3 is a perspective view illustrating an automobile to which a weather strip is attached.

FIG. 4 is a sectional view of a weatherstrip mounting structure according to a second embodiment of the present invention.

FIG. 5 is a schematic perspective view of a sticking device when a double-sided tape is stuck to a weather strip.

FIG. 6 is a diagram illustrating a configuration of a double-sided tape.

[Explanation of symbols]

2a First mounting surface 2b Second mounting surface 2c Vertical wall 10a First mounting surface 10b Second mounting surface 11 clips 12 double-sided tape 14 Hard rubber d step W Weather Strip

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B60J 10/08 B60R 13/06 E06B 7/23

Claims (4)

(57) [Claims] 1. A first mounting surface attached to a first mounting surface of a vehicle body by a clip, and a first mounted surface of the vehicle body.
Surface and is a weather strip and a second mounting surface to be attached by double-sided tape to the second attached surface of a vehicle body having a step, between the first mounting surface and second mounting surface, said double-sided tape
A vertical wall portion having a step of 10 mm or less that exceeds the thickness of the first mounting surface and the second mounting surface is stepwise , and the first mounting surface and the second mounting surface are Almost parallel
A weather strip characterized by being formed in . 2. The vertical wall portion is formed of hard rubber.
And it has weatherstrip of claim 1. 3. The weather strip according to claim 1 or 2, wherein a protrusion is formed on the vertical wall portion . 4. The weathers according to claim 1.
Installing the weather strip to attach the trip to the car body
The structure is such that the first mounting surface of the weather strip is
Attached to the first attachment surface of the vehicle body with a clip
And the second mounting surface of the weather strip is
Mounted on the second mounting surface of the vehicle body with double-sided tape
Wearable weather strip mounting structure.