JPS6045444A - Water-proof structure for car - Google Patents

Abstract

PURPOSE:To improve the water-proof performance easily with low cost, by applying water repellent surface treatment on the window panel at the position contacting with weather strip. CONSTITUTION:A weather strip 1 is comprised of a groove welt 3 containing a core member 2, two pair of rips 6a, 6b, 7a, 7b facing each other to hold a flange 5 extending from a body panel 4 in said groove, seal rip 8 formed on the upper face of groove welt 3 and a deflector rip 9 formed at the body panel side 4. Here, treatment layers 12-14 where water repellent surface treatment agent such as silicon oil is coated and burnt are provided on the flange 5 at the position contacting with said rips 6-9, inner panel 10a at the door side and body panel 4. Consequently, water-proof performance can be improved easily with low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a weather strip mounted on an automobile, and a structure that improves waterproofness between various panels that are in close contact with the weather strip to maintain sealing properties inside and outside the automobile.

Conventionally, weather seals (IJ) have been used to secure the front and rear window glasses of automobiles, and to keep the openings of doors and trunk lids watertight and airtight.
An example of this is shown in Figure 1. That is, the weather strip 1 includes a grooved welt 3 having an inverted U-shaped cross section and containing a core material 2, and a flange 5 extending from the body panel 4 in the groove of the grooved welt 3, which is disposed facing each other so that it can be held therein. Consisting of two pairs of flange retaining lips 6a, 6b and 7a, 7b, a single lip 8 formed on the upper surface of the grooved welt 3, and a drainage lip 9 formed on the body panel 4 side of the grooved welt 3, the door panel 10 and the body panel 4 can be brought into close contact with each other. Furthermore, in order to deal with the case where the sealing force of the draining lip 9 is weakened, a contrivance has been taken to increase watertightness by sealing a sealing agent 11 having adhesive properties such as butyl sealer inside the grooved welt 3.

However, such a conventional waterproof structure has the drawbacks of increased process steps due to the inclusion of a sealant and high costs due to material costs, and weatherstrips having other shapes have the disadvantages of In some cases, it is impossible to encapsulate a sealant, resulting in a decrease in water-resistance properties.

The object of the present invention is to improve the drawbacks of the watertight structure of the conventional weather strip, thereby improving workability and watertightness, and providing a waterproof structure for automobiles that reduces costs. The present invention will be described in detail below with reference to the drawings.

FIG. 2 shows a first embodiment of the present invention (-), and the basic configuration is substantially the same as that shown in FIG. 1, and is indicated by the same reference numerals. .

That is, in this embodiment, on the inner surface of the inner panel 10a on the door side, which corresponds to the part that contacts the seal lip 8, a treatment layer 12 is provided by applying and baking a water-repellent surface treatment agent such as silicone oil or wax. It is. A similar treated layer 13 is also provided on the body panel 4 corresponding to the portion that contacts the draining lip 9, and two pairs of flange retaining lips 6a, 6 are further disposed facing each other inside the grooved welt 3. The treatment 1-14 is also provided on the flange 5 corresponding to the portion where the gases 7a and 7b come into contact. The treated layers 12, 13, and 14, which have been subjected to a water-repellent surface treatment, have the property that even if they fall down, they come into close contact with the weather strip and drain lip when the door is closed, thereby blocking the intrusion of rainwater and the like.

FIG. 3 shows a second embodiment of the present invention, in which a weather strip main body 17 is interposed between a panel 15 and a panel 16 on the vehicle body side and fixed to the vehicle wind panel or front window panel. .Sp16a is a flange protruding from the vehicle body side panel 16, which is connected to the wind panel 1.
5 is a fitting groove 17 provided in the weather strip body 17.
It is fitted and fixed inside a. Further, on the surface of the flange 16a and at a portion that contacts the weather strip main body 17, a treated layer 18 is provided which is coated and baked with a water-repellent surface treatment agent similar to that of the previous embodiment, and a similar treated layer 19 is provided on the wind panel. 15, and the fitting M m 17
It is also formed in the part fitted to a. Furthermore, a similar treatment layer 22 is also formed at the portion where the vehicle body side panel 16 and the seal lips 20, 21 come into contact. With the above configuration, rainwater or car wash water flowing down through the wind panel 15 is blocked from entering by the treatment layer 19, and water flowing down on the vehicle body side panel 16 is blocked by the treatment layer 22.
And entry into the vehicle interior is denied by the processing layer J8.

FIG. 4 shows a third embodiment of the present invention, in which a weather strip 23 having a hollow portion extending to a corner or a bent portion of an automobile door is bonded to a panel U on the door body side, and a weather strip 23 is attached to a panel U on the door body side. The weather strip 23 changes and comes into pressure contact with the door panel 25 as the door panel 25 is opened and closed. A treatment layer 26 coated with a water-repellent surface treatment agent and baked is provided on the surface side of the door panel 25 and in a portion that comes into contact with the weather strip 23. With this structure, the door panel 26 is coated and baked when the door is closed. The present invention can prevent rainwater etc. from entering through the close contact portion between the weather stripper 25 and the weather stripper. Further, FIG. 5 shows a fourth embodiment of the present invention, in which 27 is a welt attached to a flange 28 at the opening of the storage body, and a flange retaining lip 2 is provided on the inner facing surface of the welt 27.
9, 29.30, and 30 are integrated.

31 is a core metal that serves both reinforcement and shaping, and welt 2
A seal lip 32 protruding from the side wall on the outside of the vehicle in a substantially dogleg shape is in contact with a mating panel such as the Winodogara 333 to seal the inside and outside of the vehicle interior. Depending on the mounting position of the welt 27 relative to the flange 28, the contact angle of the mating panel may differ, which may cause a seal failure when the window glass approaches from the position shown in the window glass 33 or 33a. be. However, by providing a treatment layer 34° 34 coated with a water-repellent surface treatment agent and baked on the surface of the windshield 33 or 33a and in the area that contacts the seal lip 32 as in the present invention, the risk of the seal failure described above is eliminated. . A similar treatment layer 38 is also formed on the surface of the flange 28 to prevent moisture from penetrating through the welt 27.

Next, the material and forming method of the treatment layer based on the water-repellent surface treatment agent employed in each of the above examples will be described. That is,
Silicone resin, commonly referred to as "silicone," has heat resistance, mold releasability, adhesiveness, and electrical insulation properties, so it is used as a covering material for various electronic components, and is also used as a coating material for various electronic components. Types that harden by irradiation are known.

The silicone adopted in the present invention is different from those mentioned above,
It is made of an organosiloxane composition containing silicon atoms and has the property of curing at room temperature or under heating. Moreover, when applied to other substances, in addition to the above-mentioned water-breaking properties, it also has excellent weather resistance, non-stick properties, and abrasion resistance, and also has the effect of improving slipperiness and preventing ``squeak''. The present invention is characterized in that a surface treatment agent having the above characteristics is applied and baked onto the panel surface that comes into contact with the weather strip. In addition, as other materials, it is also possible to apply various water-repellent waxes or to use a baking treatment.

On the other hand, the processing layer is not limited to a single layer, and may be formed as a processing layer having a double structure as shown in FIG. That is, in FIG. 6, reference numeral 35 indicates various panels on the vehicle body side, and on the panel 35, the water-repellent surface treatment agent that has been coated and baked as described above is merely coated on the surface of the treated layer 36. Treated layers 37 that are not subjected to baking treatment are formed so as to overlap each other. In such a configuration, when the IJ knob is pressed and comes into contact with the treated layer 37, the water-repellent surface treatment agent applied on the treated layer 37 migrates and adheres to the counterpart member. As a result,
The synergistic effect can further improve water repellency, increase the abrasion resistance of the mating member, and further eliminate the "squeak" that tends to occur during contact.

As explained in detail above, the present invention provides a weather strip that is interposed between a body panel and a window panel that constitute a vehicle, between a pawl body panel and a panel that constitutes a trunk lid, or between a pawl body panel and a door panel, etc. In this configuration, water-testable surface treatment is applied to the surfaces of the wind panel, heavy body panel, and door panel corresponding to the dB level that contacts the weather strip, thereby improving waterproof properties. Since no special sealing material such as a sealer is required]7, it has the advantage of being able to reduce costs, and is useful when applied to each vehicle.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an example of a waterproof structure using a conventional weather strip, FIG. 2 is a cross-sectional view showing a first embodiment of the waterproof structure according to the present invention, and FIG. 4 is a sectional view showing a third embodiment of the present invention, FIG. 5 is a sectional view showing a fourth embodiment of the present invention, and FIG. 6 is a water-repellent bare surface. FIG. 2 is a cross-sectional view showing an example of a treated layer. 1.23...Weather Streets 7', 3.27...
Welt, 4...Body panel, 8.32...Seal lip, 9...Draining lip, 10, 25...
Door panel, 12. J3゜14, 18, 19, 2
2, 26, 34... Processing layer, 15... Wind panel, 16... Main body side panel, 17a... Fitting groove. 3F Figure 4 Figure 5 Figure 1 Continuation of page 1 0 Inventor Makoto Nakajima - Chiba Funaga O Inventor
Pond 1) Kei - Chiba Mayor @ Inventor Plant material Kiyotaka Chiba Funaga 255 -

Claims (1)

[Claims] (1) Contact with the weather strip in a structure in which a weather strip is interposed between an automobile wind panel and a single panel, or between a vehicle body panel and a door panel, or between vehicle body panels to maintain adhesion. The wind panel, vehicle body panel corresponding to the part,
and a waterproof structure for an automobile, characterized in that a water-repellent surface treatment is applied to the surface of the door panel. C) The water-repellent surface treatment is performed by applying a water-repellent chemical material such as silicone or wax, and by using a combination of both methods. Waterproof construction.