JP2000185558A - Glass run channel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the flexibility and wear resistance of a glass run channel. SOLUTION: This glass run channel 10, with a groove shape cross section, is fitted within the window sash for an automobile for guiding ascending and descending a window glass. The body of the glass run channel 10 is made of an olefin based elastomer. Inside the groove, in a bottom part 12 and side walls 13, 13, to which the glass slidably contacts, hard synthetic resin coated layers 2d, 3d containing sliding lubricant are provided. On the surfaces of lips 14 to which the inner and outer surfaces slidably contact, a hard synthetic resin coated layer 4c containing sliding lubricant is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a glass run channel fitted and fixed to a sash in which a window glass of an automobile moves up and down.

[0002]

2. Description of the Related Art A description will be given with reference to FIGS.
Reference numeral 6 denotes a car body, 7 denotes a door, 8 denotes a sash, 10 denotes a grooved glass run channel fitted and fixed to the sash 8, and 9 denotes a window glass that moves up and down along the glass run channel 10. The glass run channel 10 has a bottom 1
2, a side wall 13 and a lip 14. 2 is a bottom coating layer formed inside the groove of the bottom 12 and 3 is a side wall 13
4 are lip coating layers formed on the surface of the lip 14 and are provided so that the glass 9 slides smoothly.

As shown in FIG. 3, a conventional glass run channel has an olefin-based elastomer 1a, a bottom coating layer 2, a side wall coating layer 3, and a lip coating layer 4 which are to be in sliding contact with the glass 9, as shown in FIG. The flocking 2b, 3b, 4b made of urethane paint or nylon was used.

Further, in recent years, non-painting and non-flocking have been promoted for the purpose of cost reduction, restriction on use of organic solvents, and improvement of functionality. Instead of the conventional coating and flocking, the bottom coating layer 2, the side wall coating layer 3, and the lip coating layer 4 are shown in FIG.
The soft synthetic resins 2c, 3c,
4c or hard synthetic resins 2d, 3d and 4d mixed with a lubricant as shown in FIG.

[0005]

The non-painted, non-flocked glass run channel 10 is made of a synthetic resin containing a sliding material for the glass sliding contact portion, but has a bottom coating layer 2 and a side wall coating layer. 3. The same synthetic resin is used for the lip coating layer 4. For this reason, as shown in FIG. 4, when the soft synthetic resin coating layers 2c, 3c, 4c are selected, the lip portion 14 is excellent in flexibility but inferior in wear resistance of the bottom portion 12 and the side wall portion 13. As shown in FIG. 5, the hard synthetic resin coating layers 2d, 3
When d and 4d are selected, the wear resistance of the bottom portion 12 and the side wall portion 13 is excellent, but the flexibility of the lip portion 14 is inferior.
Rippling and wrinkling are likely to occur. An object of the present invention is to provide a glass run channel excellent in flexibility and abrasion resistance without using an organic solvent.

[0006]

A description will be given with reference to FIG. 1, FIG. 2, and FIG. The glass run channel according to the present invention is a glass run channel 10 having a groove shape in cross section which is mounted in a sash 8 of an automobile for guiding the window glass 9 to move up and down. The glass run channel body is made of an olefin-based elastomer. A hard synthetic resin coating layer 2d, 3d containing a sliding material is provided inside the groove of the bottom portion 12 and the side walls 13, 13 where the edge 9e of the glass 9 slides, and the lip portion where the inner and outer surfaces 9f, 9f of the glass 9 slide. The surface 14 is provided with a soft synthetic resin film 4c containing a lubricant.

It is preferable that the hard synthetic resin coating layers 2d and 3d have a Shore D hardness of 40 degrees or more, and the soft synthetic resin coating layer 4c has a Shore A hardness of 50 to 95 degrees.

Further, it is preferable that the hard synthetic resin coating layers 2d and 3d have a Shore D hardness of 60 degrees or more and the soft synthetic resin coating layer 4c has a Shore A hardness of 80 to 95 degrees.

Examples of the olefin elastomer forming the glass run channel body include a thermoplastic olefin elastomer (TPO) and a crosslinked EPDM compound.

[0010] The lubricant is a fatty acid or a salt, such as silicone oil, silicone powder, or fatty acid amide, and is a chemical added when a polymer is thermoformed.

As a synthetic resin constituting the soft synthetic resin coating layer, TPO having a Shore A hardness of 80 degrees can be used.

Examples of the synthetic resin constituting the hard synthetic resin film layer include TPO having a Shore D hardness of 50 degrees when the main body is TPO, and water-crosslinked PE having a Shore D hardness of 60 degrees when the main body is an EPDM compound. Can be

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION In FIG. 1, FIG. 2 and FIG.
Is a vehicle body, 7 is a door, 8 is a sash, 10 is a glass run channel fitted and fixed to the sash 8, 9 is a window glass that moves up and down along the glass run channel 10. The glass run channel 10 has a bottom 12, a side wall 13, and a lip 14.

The glass run channel 10 made of an olefin elastomer has a groove shape in cross section. Hard synthetic resin coating layers 2d, 3d containing a sliding material are provided inside the grooves of the bottom portion 12 and the side wall portions 13, 13 with which the edge 9e of the glass 9 slides. Lip portion 1 where inner and outer surfaces 9f of glass 9 slide.
On the surface of 4, a soft synthetic resin coating layer 4c containing a lubricating material is provided.

In this case, the hard synthetic resin coating layers 2d, 3d
Is a soft synthetic resin coating layer 4 having a Shore D hardness of 40 degrees or more.
The Shore A hardness of c is preferably 50 to 95 degrees.

It is more preferable that the hard synthetic resin coating layers 2d and 3d have a Shore D hardness of 60 degrees or more, and the soft synthetic resin coating layer 4c has a Shore A hardness of 80 to 95 degrees.

If the Shore D hardness of the hard synthetic resin layers 2d and 3d is less than 40 degrees, the abrasion resistance is deteriorated. When it is 40 degrees or more and less than 60 degrees, abrasion resistance slightly deteriorates.

The Shore A hardness of the soft synthetic resin layer 4c is 50
If it is less than the degree, the coefficient of friction increases, and the glass slidability deteriorates. When the angle exceeds 95 degrees, the flexibility of the lip portion deteriorates, and the undulation and wrinkles are easily generated. If it is not less than 50 degrees and less than 80 degrees, the coefficient of friction is slightly increased, and the glass sliding property is slightly deteriorated.

[0019]

According to the present invention, the synthetic resin used for the glass sliding contact portion is made into two layers, the hard synthetic resin coating layers 2d and 3d are provided on the bottom portion 12 and the side wall portion 13 which require abrasion resistance, and the lip portion 14 is provided on By providing the soft synthetic resin coating layer 4c, the flexibility and abrasion resistance of the glass run channel can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of an automobile.

FIG. 2 is a sectional view taken along the line II-II of FIG.

FIG. 3 is a cross-sectional view of a glass run channel of a first conventional example.

FIG. 4 is a sectional view of a glass run channel of a second conventional example.

FIG. 5 is a sectional view of a third conventional glass run channel.

FIG. 6 is a sectional view of a glass run channel according to an example of the present invention.

[Explanation of symbols]

 1a Olefin elastomer 2 Bottom coating layer 2b Paint or flocking 2c Soft synthetic resin with lubricating material 2d Hard synthetic resin with lubricating material 3 Side wall coating layer 3b Paint or flocking 3c Soft synthetic resin with lubricating material 3d Hard synthetic resin with lubricating material 4 Lip portion coating layer 4b Paint or flocking 4c Soft synthetic resin with lubrication material 4d Hard synthetic resin with lubrication material 6 Body 7 Door 8 Sash 9 Glass 9e Edge 9f Surface 10 Glass run channel body 12 Bottom 13 Side wall 14 Lip

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Claims (3)

[Claims] 1. A grooved glass run channel (10) mounted in a sash (8) of an automobile for guiding a window glass (9) to move up and down, wherein the glass channel body is an olefin-based elastomer. And a hard synthetic resin coating layer (2d, 3d) containing a lubricant is provided on the bottom (12) where the edge (9e) of the glass (9) is in sliding contact with the inside of the groove of the side wall (13, 13); A glass run channel characterized in that a soft synthetic resin coating layer (4c) containing a sliding material is provided on the surface of a lip (14) where the inner and outer surfaces (9f, 9f) of the glass (9) are in sliding contact. 2. A hard synthetic resin coating layer (2d, 3d) having a Shore D hardness of 40 degrees or more and a soft synthetic resin coating layer (4).
The glass run channel according to claim 1, wherein the Shore A hardness of c) is 50 to 95 degrees. 3. The hard synthetic resin coating layer (2d, 3d) has a Shore D hardness of 60 degrees or more and the soft synthetic resin coating layer (4
The glass run channel according to claim 2, wherein the Shore A hardness of c) is 80 to 95 degrees.