JPH0732211Y2 - Weather strips for cars - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather strip for automobiles, which is excellent in mounting and mounting properties at low temperatures and does not generate squeaking noises during running.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 4, a weather strip 9 for an automobile has a mounting base portion 91 which is fitted into an end portion 6 of a vehicle body window panel and a seal which is projected from the mounting base portion 91 and is mounted and mounted to an interior lining end portion 7. It is composed of a portion 92 and a lip portion 93 protruding into the mounting base portion 91. The weather strip 9 is attached to the vehicle body window panel end portion 6 around the vehicle door opening, seals the gap between the vehicle body window and the vehicle body window panel end portion 6, and also has a decorative role. Therefore, in order to improve the appearance of the weather strip 9 when the door is opened, a decorative cloth 94 in which the portion visible from the inside of the room is matched with the color tone of the inside of the room is attached to the surface thereof. In addition, the weather strip 9 is provided on the end portion 6 of the vehicle body window panel.
In addition to completely blocking the wind and rain, it must absorb the vibration of the vehicle body while running and maintain good sealing performance. As shown in FIG. 3, the mounting base portion 91 has a U-shaped main body portion 91 provided around the core 911.
2 and a decorative cloth 94 attached to the surface of the main body 912. As the core material 911, for example, a stainless steel sheet metal core is used. The material of the main body 912 is made of an elastic material such as vinyl chloride resin or ethylene-propylene copolymer (EPDM). As the decorative cloth 94, a chemical cloth such as nylon or polyester is used. On the other hand, as shown in FIG. 3, the sealing portion 92 has a main body 921 protruding from the main body portion 912 in a semi-circular shape toward the vehicle body window side, and an opening 922 arranged below the main body 921. The main body 921 is made of an elastic body such as vinyl chloride resin or EPDM. Also, the main body 921
The decorative cloth 94 is adhered to the surface of the via the adhesive 941. Then, the weather strip 9 is attached to the vehicle body window panel end portion 6 and the interior lining end portion 7 by the procedure shown in FIGS. That is, first, as shown in FIG.
Is inserted into the end portion 6 of the vehicle body window panel. Next, as shown in FIG. 6, the seal portion 92 is pushed upward by the finger 65. Next, the interior lining end 7 is attached and mounted in the opening 922 of the seal portion 92. Thereby, as shown in FIG. 4, the weather strip 9 is attached to the vehicle body window panel end portion 6 and the interior lining end portion 7. At this time, the lip portion 93 comes into contact with the vehicle body window panel end portion 6 to exert a sealing property. In addition, the inner portion 923 of the seal portion 92 has the inner lining end portion 7
There is a slight gap 920 between the and, as shown in FIG.

[0003]

However, the above-mentioned conventional technique has the following problems. That is, as shown in FIG. 6, the weather strip 9 pushes the seal portion 92 upward when the weather strip 9 is attached. Therefore, the seal portion 92
Must have excellent flexibility and flexibility (bending properties). However, the sealing portion 92
Is made of vinyl chloride resin, EPDM, or the like. Therefore, when the seal portion 92 is attached to the interior lining end portion 7 at a low temperature, for example, 5 ° C. or less,
Since the seal portion 92 is poor in flexibility and flexibility, it is difficult to mount and mount it. That is, since the seal portion 92 is hard at a low temperature, the mountability to the interior lining end portion 7 is not good. Here, the mountability means the seal portion 92.
Ease of mounting work to attach the to the end of the interior lining. On the other hand, as shown in FIG. 4, the inner portion 923 of the seal portion 92 has a slight gap 920 between it and the interior lining end portion 7. Therefore, when the vehicle is running, especially at low temperatures, the seal portion 92 is in a hardened state. Therefore, the inner portion 923 of the seal portion 92 violently contacts (interferes) with the interior lining end 7 each time the interior lining end 7 vibrates slightly due to the vibration of the vehicle body. As a result, the seal portion 92 produces a squeak noise (tapping sound) at a low temperature. The present invention has been made in view of the above conventional problems, and it is an object of the present invention to provide a weather strip for an automobile, which has excellent mounting and mounting properties at low temperatures and does not generate squeaking noises during running. is there.

[0004]

The present invention has a mounting base portion having a U-shaped cross section and a seal portion protruding from the mounting base portion, and a decorative cloth is adhered to the surfaces of the mounting base portion and the seal portion. The weather strip according to claim 1, wherein the mounting base comprises a core and a main body made of vinyl chloride resin provided around the core, and the inside of the seal is made of a thermoplastic elastomer. A weather strip for an automobile, characterized in that a crosslinked alloy of a chlorinated olefin copolymer and a vinyl chloride resin are sequentially laminated on the surface, and a decorative cloth is attached to the surface thereof. What is most noticeable in the present invention is that the inner part of the seal part is made of a thermoplastic elastomer, and the cross-linked chlorinated olefin copolymer alloy and vinyl chloride resin are sequentially laminated on the surface, and the surface is decorated. It consists of sticking a cloth. Examples of the thermoplastic elastomer include a styrene-butadiene type elastomer and a polyethylene type elastomer. As the cross-linked alloy of chlorinated olefin copolymer, for example, "ALCRYN" (registered trademark) manufactured by DuPont is used. Further, since the crosslinked alloy of chlorinated olefin copolymer has excellent affinity with vinyl chloride resin, coextrusion molding of both of them is possible. The thermoplastic elastomer and the chlorinated olefin copolymer crosslinked alloy are excellent in flexibility and flexibility as compared with vinyl chloride resin in a low temperature environment (for example, 5 ° to -30 ° C). They also have a soft feel, elasticity similar to flexible rubber, creep characteristics, and excellent weather resistance. Further, these are used, for example, only in the inner part of the seal part, and the main part is made of vinyl chloride resin. Further, the main body portion means a portion having a U-shaped cross section which constitutes a main portion of the mounting base portion provided around the core member in the mounting base portion of the weather strip. The above-mentioned inner side portion means a portion of the seal portion of the weather strip opposite to the surface on which the decorative cloth is attached.

[0005]

In the weather strip of the present invention, the inner portion of the seal portion is formed by two layers of the thermoplastic elastomer and the chlorinated olefin copolymer crosslinked alloy. Therefore, it is excellent in flexibility and flexibility (bending property) at low temperatures. Therefore, the inner portion of the seal portion can maintain flexibility and does not harden in a low temperature environment. That is, since the inside of the seal portion is flexible, it is easy to push the seal portion into the opening portion even when it is attached at a low temperature, so that the end portion of the interior lining is easily attached and attached. Further, even when vibration is transmitted to the inner side portion of the seal portion when the vehicle is running, the seal portion does not absorb the vibration and the inner portion of the seal portion does not vibrate slightly. Therefore, the inner portion of the seal portion does not interfere violently with the end portion of the interior lining during traveling, and no creaking noise is generated. In addition, since the thermoplastic elastomer, the chlorinated olefin copolymer crosslinked alloy and the vinyl chloride resin can be co-extruded, the weather strip productivity is improved. Also, since the above three parties have good affinity with each other, they are strongly joined together,
Constructs a seal that has excellent flexibility and durability. As described above, according to the present invention, it is possible to provide a weather strip for an automobile, which is excellent in mounting and mounting properties at a low temperature and does not generate squeaking noise during traveling.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A weather strip for an automobile according to an embodiment of the present invention will be described with reference to FIGS. That is, the weather strip of this example, as shown in FIG.
It has a mounting base 1 having a U-shaped cross section and a seal portion 2 protruding from the mounting base 1, and a decorative cloth 3 is attached to the surfaces of the mounting base 1 and the seal portion 2. And the mounting base 1
Is composed of a core material 11 and a main body 4 made of vinyl chloride resin provided around the core material 11. The mounting base 1 has a lip portion 12 inside the U-shape. Also,
The seal portion 2 has an opening 24 at the bottom. The seal portion 2 has an inner portion 20 as shown in FIGS.
Is made of a thermoplastic elastomer 21, and a cross-linked chlorinated olefin copolymer alloy 22 and a vinyl chloride resin 23 are sequentially laminated on the surface thereof, and the decorative cloth 3 is stuck on the surface thereof. Reference numeral 31 is an adhesive. As the thermoplastic elastomer 21, "Milastomer" (registered trademark) manufactured by Mitsui Petrochemical Co., Ltd., which is an olefin-based thermoplastic elastomer, is used. In addition, as the above chlorinated olefin copolymer crosslinked alloy 23,
"ALCRYN" (registered trademark) manufactured by DuPont is used. As the vinyl chloride resin, a commercially available vinyl chloride resin is used. Then, the thermoplastic elastomer 21 and the chlorinated olefin copolymer crosslinked alloy 2
2 and the vinyl chloride resin 23 have excellent mutual affinity. A chemical cloth such as nylon is used as the decorative cloth 3. Then, the decorative cloth 3 is attached to the surface of the integrally molded vinyl chloride resin 23 of the main body by using the urethane rubber adhesive 31. Also, the core material 11
For this, a sheet metal cored bar made of stainless steel is used. And
Attach the weather strip to the end of the vehicle body window panel (not shown).
When attaching to, the attachment is performed in the same manner as the conventional weather strip attachment procedure (see FIGS. 4 to 6). Next, the function and effect will be described. In this example, the weather strip is the inner part 20 of the seal part 2.
Are formed by two layers of a thermoplastic elastomer and a chlorinated olefin copolymer crosslinked alloy. Therefore, the seal portion 2 is flexible at low temperature and has excellent bending characteristics. Therefore, the inner part 20 of the seal part 2 is
Can maintain flexibility at low temperatures and does not harden. Therefore, when the end of the interior lining is attached to the seal portion, it is easy to attach and install. Further, even when vibration is transmitted to the inner portion 20 of the seal portion 2 during traveling, the seal portion absorbs the vibration and the inner portion 20 of the seal portion 2 violently contacts the interior lining end portion 7 during traveling. They do not interfere with each other and no creaking noise is generated. Further, since the thermoplastic elastomer, the chlorinated olefin copolymer crosslinked alloy and the vinyl chloride resin can be co-extruded, the weather strip productivity is improved.

[Brief description of drawings]

FIG. 1 is a sectional view of a weather strip according to an embodiment.

FIG. 2 is a cross-sectional view of a seal portion of a weather strip in an example.

FIG. 3 is a cross-sectional view of a conventional weather strip.

FIG. 4 is an explanatory view showing a conventional procedure for attaching and mounting a weather strip.

FIG. 5 is an explanatory view showing a conventional procedure for attaching and mounting a weather strip.

FIG. 6 is an explanatory view showing a conventional procedure for attaching and mounting a weather strip.

[Explanation of symbols]

 1. ． ． Mounting base, 11. ． ． Core material, 2. ． ． Seal part, 20. ． ． Inner part, 21. ． ． Thermoplastic elastomers, 22. ． ． Crosslinked alloys of chlorinated olefin copolymers, 23. ． ． Vinyl chloride resin, 3. ． ． Decorative cloth, 4. ． ． Main body,

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B60R 13/06

Claims (1)

[Scope of utility model registration request] 1. A weather strip for an automobile, comprising a mounting base having a U-shaped cross section, and a seal portion protruding from the mounting base, and a decorative cloth attached to the surfaces of the mounting base and the seal portion. The attachment base is composed of a core material and a main body made of vinyl chloride resin provided around the core material, and the inside of the seal portion is made of a thermoplastic elastomer, and the surface thereof is chlorinated olefin. A weather strip for automobiles, which is obtained by sequentially laminating a copolymer cross-linked alloy and a vinyl chloride resin, and adhering a decorative cloth on the surface thereof.