JPS58170624A - Weather strip for automobile - Google Patents

Abstract

PURPOSE:To quickly further surely perform connective integral molding of a weather strip mounted to the internal periphery of a sash for an automobile, by specifying materials respectively of the seal packing part of a top side part and the glass channel parts of both side parts in the weather strip to integrally connect the materials. CONSTITUTION:A weather strip 11 mounted to the internal periphery of a door sash 2 comprises a seal packing part 11a, whose sealing quality for the upper end edge of a door glass 3 is seriously considered, and glass channel parts 11b, 11c both having sealing quality and serving as the lift guide of the glass 3. Here the part 11a is formed by a sponge material of ethylene propylene rubber while the parts 11b, 11c are formed by a solid material of rubber, ethylene, vinyl, acetate or vinyl chloride. Then the both parts 11a and 11b, 11c are integrally joined by an injection molded article of ethylene, vinyl and acetate.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automobile weatherstrip that is attached to the inner periphery of an automobile sash.

Among conventional automobile sashes, for example, there are weather strips shown in FIGS. 1, 2, and 3 that are attached to door sashes. FIG. 1 is a schematic front view of a door sash 2 to which a weather strip 1 is attached. The weather strip 1 has an upper side 1α
As shown in FIGS. 2 and 3, the cross-sectional shapes of the sides 16.1° and both sides are different, and the upper side 1a is a seal backing part with emphasis on sealing performance against the upper edge of the door glass 3. Both sides 1 b and 1 a form a glass channel portion that not only has sealing properties but also serves as a guide for raising and lowering the door glass 3 . Nine, since the upper side 1a emphasizes sealing performance, the sponge rubber tip is formed on both sides 1 of the shank 1.
M, 1 K is multi-formed by extrusion molding or the like using aFi solid rubber. Furthermore, both sides 1, and 14, 1c
11 Kfd of gold was determined, and rubber was injected into the junction between both sides 16 and 16, 1a. Subsequently, a vulcanization operation was performed to integrally connect the upper side 1a and both sides IL1° at the joint rubber part 4. , Oussane trip 1 as shown in FIG. 3 is obtained.

However, such conventional weather strips for automobiles have the problem that the vulcanization operation following the connection of the upper side 1a and both side sides 16.11 takes too much time, and also that flakes are likely to occur, resulting in low molding accuracy. there were. For this reason,
Weatherstrips have been provided that are made of synthetic resin and molded with a metal mold, thereby providing sufficient precision without causing any cracks. However, in such a case, there is a problem in that the sealing property of the upper side 1a against the door glass is incomplete.

In contrast, the part that requires sealing performance, that is, the upper side 1α, is made of sponge rubber with a small stiffness, and both sides 16
．． A Weather 7 trip was conceived in which 16 was made of synthetic resin such as vinyl chloride and these were integrally connected.

However, the connection between vinyl chloride and sponge rubber could not be established reliably due to the large difference in hardness of the dough.

The present invention aims to improve the various drawbacks of the conventional art, and the seal backing part such as the upper side 1cL is made of ethylene.
It is formed from a propylene rubber sponge material, and the both sides 1
6,1. The glass channel part is made of solid ethylene/propylene rubber, ethylene/vinyl acetate or vinyl chloride synthetic resin material, and the straw seal banking part and the glass channel part are made of ethylene/vinyl acetate or vinyl chloride by injection molding. It has a structure in which it is integrally connected with acetate, which makes the connection between the seal backing part and the glass channel part quick and reliable, and greatly improves molding accuracy (also provides a low-cost automotive weather strip. do.

An embodiment of the present invention will be specifically described below with reference to the drawings.

Figure ts4 is a partially cutaway perspective view of the weather strip 11 showing one embodiment of the present invention. In the same figure, 11α
The seal backing part is made of extruded or press-molded ethylene/propylene rubber sponge material. Incidentally, even without this ethylene vinyl acetate adhesive, they each have the property of forming a close chemical bond with each other. On the other hand, the 11bFi glass channel section is made of a solid material of ethylene/propylene rubber, vinyl chloride, or ethylene/vinyl acetate extruded and press-molded. Incidentally, these ethylene Φ propylene rubber and vinyl chloride have an extremely high degree of bonding with respect to ethylene vinyl acetate.

Further, the seal backing part 11α and the glass channel part 116 are installed in a predetermined mold, and ethylene-vinyl acetate is injected into the mold, and the injection molded product 12 is Both parts 1 are integrally connected. That is, ethylene-vinyl acetate acts to tightly bond the soft ethylene-propylene rubber sponge material and the resin such as vinyl chloride.

And the bonding speed is fast, and the glass channel part is 116KF due to resin molding! There is no occurrence of paris, and machining accuracy is improved.

By using a synthetic resin material such as vinyl chloride for weather strings with such a configuration, molding is easy and the appearance is good, but since a large heat source is required for molding, the cost of the product is reduced. You can try to bring it down.

In addition, vinyl chloride and ethylene/propylene rubber have a certain degree of hardness and lubricity, and when used as a glass channel, they have excellent sealing and guiding properties for one glass.

Furthermore, since the seal backing part 11e is made of an LFi sponge material, it has good sealing performance against door glass, etc., and has a high sealing performance that does not cause deterioration over many years.

As described in detail above, according to the present invention, there is provided a weather strip for an automobile which is attached to the inner part of an automobile sash and whose upper side is a seal backing part and whose both sides are glass channel parts. , the seal backing part is made of ethylene/propylene rubber sponge material, and the # period glass channel part is made of ethylene/propylene rubber.
Solid propylene rubber material, Echireshi fist hinyl.
An automotive weather strip that is made of acetate or vinyl chloride, and whose seal backing part and glass channel part are integrally connected by an injection molded product of tocaethylene/vinyl acetate, so that the connection can be integrally molded quickly and reliably. Locos)
It can be provided to the K market.

[Brief explanation of drawings]

Figure 1 is a front view of an automobile door sash, Figure 2 (a,
) is a cross-sectional view of the conventional weather strip taken along line A-A in Figure 1, Figure 2 (6) is a cross-sectional view of the conventional weather strip taken along line B-B in Figure 1, and Figure 3 is a cross-sectional view of the conventional weather strip taken along line A-A in Figure 1. A partially cutaway perspective view of a weather strip made of sponge rubber and solid rubber;
FIG. 4 is a partially cutaway perspective view of the IJ tube of the present invention. 1.11...Weather strip, 2...Door sash, 3...Door glass, 11α...7-lucking part, 11b...Glass channel part, 12...
Injection molded products. Procedural amendments May-December 74, 1939, Commissioner of the Japan Patent Office 1, Indication of the case, Patent Application No. 53176, filed in 1982, 2, Name of the invention: Weather strip for automobiles 3, Person making the amendment, Relationship to the case, Applicant Tokyo 1-29 Akashi-cho, Chuo-ku, Tokyo Suiseikai Building Telephone 03 (
545) 2251 (Representative) (1) Ii! The “Claims” column (2) of the All Document
) Column 6 of the "WAiIa Description of the Invention" of the specification, contents of the amendment (1) The statement of claims on page 1 of the specification IiF is corrected as shown in the attached document 4). (2) Lines 3 and 6 of page 5 of the specification, line 8 of page 6, lines 11 to 12 of the same, lines 15 to line 1 of page 7 of the specification , page 7, line 3, @ page 88, lines 1 to 15, page 9, 2nd r-st π, “Ethylene
The text "vinyl acetate" should be corrected to "ethylene-vinyl acetate copolymer". (3) Similarly, on the 4th and 5th lines of page 6, it is also stated that [this ethylene... even without a layering agent], [Cσ
J ethylene-vinyl acetate f-tocoho IJ? -And,
It is a water-crosslinked type using a silane coupling agent π, so it can be used without a heat-resistant adhesive.'' (Attachment) 2. What is the scope of the patent claims for automatic military satushes? 3*FF is attached to a weather strip for automobiles, the upper side is a seal backing part, and both working sides are glass channel parts, wherein the seal backing part is formed of a sponge material of ethylene propylene rubber, The glass channel part is ethylene-produced, and the seal backing part and the glass channel part are made of ethylene-vinyl acetate coholyte injection molded product ffJ-. Automotive weather strips

Claims (1)

[Claims] In an automobile weather strip that is attached to the inner part of an automobile satush, the upper side is a seal backing part, and both sides are glass channel parts,
The seal nozzle (the binding part is made of a sponge material of ethylene/propylene rubber, and the glass channel part is made of a solid material of ethylene/propylene rubber, ethylene/propylene rubber).
An automobile weather strip made of vinyl acetate or vinyl chloride, and having a seal backing part and a glass channel part integrally connected by injection molding of ethylene vinyl acetate.