JP2004314809A - Weather strip for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weather strip for an automobile for improving assembling workability by preventing adhesion of a resin core material to a mounting base part and enhancing followability in relation to a shape change of a flange. <P>SOLUTION: This weather strip 10 is constituted by burying the resin core material 20 in the mounting base part 12 made of a rubber material or a resin material. All or a part of an outer periphery of the core material 20 is made by being coated with peeling agent such as silicon 25 or fluorine, etc. The mounting base part 12 has a substantial U-shape in cross section. On the one side wall 12a, a hollow sealing part 13 is integrally formed. The mounting base part 12 has a portion curved by placing an open part having a substantial U-shape in cross section and a bottom part 12c at the outside and at the inside, respectively. The core material 20 also has a substantial U-shape in cross section constituted of both side parts 20a and 20b along the shape of the mounting base part 12 and a connecting part 20c for connecting the both side parts 20a and 20b. At the inside of the connecting part 20c of the core material 20 located at a curved portion of the mounting base part 12, silicon 25 or fluorine is not provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a weatherstrip for an automobile in which a resin core is embedded in a mounting base made of a rubber material or a resin material.
[0002]
[Prior art]
As shown in FIG. 6, a core material 5 is buried in the mounting base 2 of the weatherstrip 1 for an automobile, and the holding strength is improved together with a holding lip 4 for a flange (not shown) to which the mounting base 2 is mounted.
The core material 5 includes a metal material (for example, Patent Document 1) and a resin material (FIG. 6), and is embedded in the mounting base 2 along the shape. A hollow seal portion 3 is integrally formed on one side wall 2a of the mounting base 2.
[0003]
[Patent Document 1]
JP-A-57-74140
[Problems to be solved by the invention]
However, when the core material 5 is made of resin, if it comes into contact with the mounting base 2 at the time of embedding in the mounting base 2 or after embedding, it will adhere to the rubber or resin material constituting the mounting base 2.
If the resin core material 5 adheres to the mounting base 2, the flexibility of the automotive weatherstrip 1 is deteriorated because of the lack of elasticity. A problem arises that the shape cannot be smoothly followed.
Accordingly, it is an object of the present invention to provide a weather strip for an automobile that prevents adhesion of a resin core material to a mounting base, improves assembling workability, and enhances followability to a shape change of a flange. That is.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 of the present invention is directed to a weather for automobiles in which a resin core material (20) is embedded in a mounting base (12) made of a rubber material or a resin material. A strip (10), characterized in that the whole or a part of the outer periphery of the core (20) is coated with a release agent (25).
[0006]
According to a second aspect of the present invention, there is provided an automobile weather strip (10) in which a resin core (20) is embedded in a mounting base (12) made of rubber or resin. A release agent (25) is interposed between the base (12) and the core (20).
In the first and second aspects, embedding the core material (20) in the mounting base (12) means not only embedding the entire core material (20) but also embedding a part of the core material (20). And the case where the rest is exposed.
[0007]
Further, the invention according to claim 3 is characterized in that the mounting base (12) is substantially U-shaped in cross section, and a hollow seal portion (13) is integrally formed on one side wall (12a) thereof, and the substantially U-shaped cross section is provided. The core material (20) has a curved portion with the open part on the outer side and the bottom part (12c) on the inner side, and the core material (20) also conforms to the shape of the mounting base (12). , 20b) and a connecting portion (20c) connecting the connecting portions, the connecting portion (20c) of the core member (20) located at a curved portion of the mounting base (12). Is characterized in that the release agent (25) is not provided on the inner side.
[0008]
The invention according to claim 4 is characterized in that the release agent is silicon (25) or fluorine.
[0009]
The symbols in parentheses indicate corresponding elements or matters described in the drawings and the embodiments of the invention described later.
[0010]
According to the automotive weather strip of the present invention, the whole or a part of the outer periphery of the core material is coated with a release agent such as silicon or fluorine. Since the agent is interposed, the resin core material and the mounting base made of rubber material or resin material are prevented from being bonded or fixed.
Therefore, the elasticity of the core material made of resin is not impaired, and a weatherstrip for automobiles with high flexibility can be obtained.
[0011]
In particular, when the hollow seal portion is integrally formed on one side wall and used with the open portion of the mounting base having a substantially U-shaped cross section outward and the bottom portion inward, the mounting portion is similar to the mounting base. On the inner side of the connection portion of the core material having a substantially U-shaped cross section, a release agent such as silicon or fluorine was not provided, so that portion of the core material adhered to the mounting base, The corner portion of the hollow seal portion integrally formed with the portion is prevented from being wrinkled.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
An automotive weather strip according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a weather strip 10 for an automobile according to an embodiment of the present invention includes a mounting base 12 made of a rubber material or a resin material and a hollow seal portion 13 integrally formed with the mounting base 12. Has a resin core 20 embedded therein. The entire outer periphery of the resin core 20 is covered with silicon 25 which is an example of a release agent. The attachment base 12 is preferably made of a material made of, for example, EPDM or TPO, but is not particularly limited thereto.
[0013]
The mounting base 12 has a substantially U-shaped cross section including both side walls 12a and 12b and a bottom 12c, and a hollow seal portion 13 is integrally formed on one side wall 12a. A plurality of holding lips 14 are provided inside the mounting base 12 to elastically contact with a flange (not shown) inserted from the opening to increase holding strength.
The core material 20 buried in the mounting base 12 and covered with the silicon 25 has a substantially U-shaped cross section including both side portions 20 a and 20 b and a connecting portion 20 c connecting between the two so as to conform to the shape of the mounting base 12. It is shaped like a letter.
[0014]
The automotive weatherstrip 10 is not only attached to a door as shown in FIG. 1, but also, for example, as shown in FIG. 2, a hollow seal portion 13 is formed integrally with a bottom portion 12c of an attachment base 12. The present invention is applicable to a device that can be attached to a trunk or a device that can be attached to a back door.
Also, as shown in FIG. 1, even if the entire core material 20 covered with the silicon 25 is not embedded in the mounting base 12, for example, as shown in FIG. 3, a part of the core material 20 (the connecting portion 20 c May be exposed.
[0015]
Further, in the present embodiment, fluorine may be used instead of the silicon 25 as a release agent for covering the core material 20 or together with the silicon 25. Other release agents can also be used.
Further, in the present embodiment, the core material 20 previously coated with the silicon 25 is integrally embedded in the mounting base 12 at the time of extrusion molding, but a release agent such as silicon 25 or fluorine is attached to the mounting base 12 and the core material. Adhesion can be prevented by interposing the core material 20 between them, so that a release agent such as silicon 25 or fluorine may be applied in advance to the mounting base 12 in which the core material 20 is embedded instead of the core material 20 side.
Further, in the present embodiment, the core material 20 has a substantially U-shaped cross section along the shape of the mounting base 12, but the shape of the core material can be changed instead of the shape of the mounting base. It is not limited to a letter shape.
[0016]
According to the weather strip 10 for automobiles, since the release agent such as silicon 25 or fluorine is interposed between the core 20 and the mounting base 12, the resin core 20 and the rubber or resin The attachment base 12 made of a material is prevented from being adhered or fixed.
Therefore, the elasticity of the core material 20 made of resin is not impaired, and the automotive weather strip 10 having high flexibility can be obtained.
[0017]
In the present embodiment, the entire outer periphery of the core material 20 is covered with a release agent such as silicon 25 or fluorine. However, as shown in FIG. 4, only a part of the core material 20 may be covered. . That is, in the case of FIG. 4, only the side portions 20a and 20b of the core member 20 and the opening side of the connecting portion 20c are covered, and the mounting base portion is not covered on the side opposite to the opening portion of the connecting portion 20c. 12 has an improved effect of adhesion.
For example, as shown in FIG. 5, the weather strip 10 for a vehicle which has been partially processed is provided with a substantially U-shaped cross-section opening of the mounting base 12 on the outside at the corner of the door, and a bottom portion. When it is used by bending the inner base 12c inward, it is possible to prevent the corner portion P of the hollow seal portion 13 formed integrally with the one side wall 12a of the mounting base 12 from being wrinkled.
[0018]
【The invention's effect】
According to the automotive weather strip of the present invention, the whole or a part of the outer periphery of the core material is coated with a release agent such as silicon or fluorine. Since the agent is interposed, the resin core material and the mounting base made of rubber material or resin material are prevented from being bonded or fixed.
Therefore, the elasticity of the core material made of resin is not impaired, and a weatherstrip for automobiles with high flexibility can be obtained.
As a result, adhesion of the resin core material to the mounting base is prevented, and assembling workability is improved. In addition, the ability to follow the change in the shape of the flange can be improved.
[0019]
In particular, when the hollow seal portion is integrally formed on one side wall and used with the open portion of the mounting base having a substantially U-shaped cross section outward and the bottom portion inward, the mounting portion is similar to the mounting base. On the inner side of the connection portion of the core material having a substantially U-shaped cross section, a release agent such as silicon or fluorine was not provided, so that portion of the core material adhered to the mounting base, The corner portion of the hollow seal portion integrally formed with the portion is prevented from being wrinkled.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an automotive weather strip according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of another automotive weatherstrip according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view of another automotive weather strip according to the embodiment of the present invention.
FIG. 4 is a sectional view of another weatherstrip for a vehicle according to the embodiment of the present invention.
FIG. 5 is a perspective view showing a main part of the automotive weather strip shown in FIG. 4;
FIG. 6 is a cross-sectional view of an automotive weatherstrip according to a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Weather strip for automobiles 2 Mounting bases 2a, 2b Side wall 2c Bottom 3 Hollow seal part 4 Lip for holding 5 Core material 10 Weather strip for automobiles 12 Mounting base 12a Side wall (one side wall)
12b Side wall 12c Bottom portion 13 Hollow seal portion 14 Holding lip 20 Core material 20a, 20b Both side portions 20c Connecting portion 25 Silicon P Corner of hollow seal portion

Claims (4)

An automotive weather strip in which a resin core is embedded in a mounting base made of a rubber material or a resin material,
A weather strip for automobiles, wherein the whole or a part of the outer periphery of the core material is coated with a release agent. An automotive weather strip in which a resin core is embedded in a mounting base made of a rubber material or a resin material,
A weather strip for automobiles, wherein a release agent is interposed between the mounting base and the core material. The mounting base has a substantially U-shaped cross section, and a hollow seal portion is integrally formed on one side wall thereof, and is curved with an opening having the substantially U-shaped cross section outward and a bottom inward. Has a part,
And the core material also has a substantially U-shaped cross section composed of both sides and a connecting portion connecting between the both sides along the shape of the mounting base,
The weather for an automobile according to claim 1 or 2, wherein the release agent is not provided on the inner side of the connecting portion of the core member located at the curved portion of the mounting base. strip. The weather strip for an automobile according to any one of claims 1 to 3, wherein the release agent is silicon or fluorine.

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