JP2001049962A - Glass run for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce peeling noise between a lip part and a side wall without reducing the deflection of the lip part. SOLUTION: A plurality of small grooves M extending in the longitudinal direction are formed on a location of inner surfaces of side walls 32a, 33a, 32b, 33b of glass runs 3a, 3b which are brought into contact with lip parts 34a, 35a, 34b, 35b when they are deflected, and an air passage is formed between the small grooves and the lip parts even when the lip parts 34a, 35a, 34b, 35b are abutted on the side walls 32a, 33a, 32b, 33b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile glass run fitted in a window glass sliding groove of a sash and guiding the sliding of the window glass.

[0002]

2. Description of the Related Art A conventional glass run for an automobile will be described with reference to a sliding window shown in FIG. A horizontally long rectangular opening is formed in the vehicle side wall, and a sash 1 is attached along the entire periphery of the opening. In the sash 1, left and right window glasses 2a and 2b are arranged.

As shown in FIG. 4, a sash 1 has two windows 1a, 1b for sliding window glasses 2a, 2b, which are arranged side by side in the indoor and outdoor directions, and each groove 1a, 1b has a glass run 3a. , 3b are fitted. Indoor glass run 3
a has a bottom wall 31a on which the outer peripheral surface of the window glass 2a slides and side walls 32a and 33a rising from both ends of the bottom wall 31a, and a main body 30a formed in a U-shape in cross section;
Lips 34a and 35a extend from the ends of both side walls 32a and 33a of Oa so as to be folded inside the main body 30a, and slidably contact the interior and exterior surfaces of the window glass 2a.

[0004] Similarly, the glass run 3b on the outdoor side also has a bottom wall 3b.
1b and main body 30b composed of side walls 32b and 33b
And lip portions 34b and 35b. The two glass runs 3a and 3b are adjacent to each other on the side wall 33.
a and 33b are connected at the upper ends thereof and are integrally formed by extrusion molding.

With the above structure, the glass runs 3a and 3b
When opening and closing the windowpanes 2a, 2b, the windowpanes 2a, 2b are slid and guided, and the windowpanes 2a, 2b and the sash 1 are opened and closed.
Waterproofing between the grooves 1a and 1b of the
The flexure of the a, 35a, 34b, 35b absorbs the backlash of the window glasses 2a, 2b in the indoor and outdoor directions due to the vibration of the automobile. Although not shown, a center sash is provided at the center of the sash 1 and located in the gap between the window glasses 2a and 2b and connecting the upper frame and the lower frame of the sash 1. The center sash is provided with a lip protruding in the indoor and outdoor directions and slidingly contacting the window glasses 2a and 2b.

[0006]

In the above-mentioned prior art, as shown in FIG. 5, the lip portions 34a, 35a, 34b,
There has been a problem that the separation noise is generated when the contact and separation of the side walls 32a, 33a, 32b, and 33b are repeated by bending the 35b.

Therefore, initially, the lip portions 34a, 35a, 3
It has been considered that a rib having a triangular cross section is provided along the longitudinal direction on the inner surface of each of the lip portions 34b and 35b.
When the ribs are provided on the inner surfaces of the distal ends of the a, 35a, 34b, and 35b, there is a problem that the bending allowance of the lip portions 35a, 35b decreases by the height of the ribs, and the sliding resistance of the window glasses 2a, 2b increases. . The present invention has been made in view of the above problems, and has as its object to reduce the separation noise between the lip and the side wall without reducing the bending allowance of the lip.

[0008]

The present invention provides a sash (1).
A main body portion (30a, 30b) having a U-shaped cross section which is fitted into a sliding groove (1a, 1b) of the window glass (2a, 2b);
Both side walls (32a, 33) of the main body (30a, 30b)
a, 32b, 33b) from the tip of the main body (30a,
The lip portion (34a, 35a, 30b) extends inward so as to be folded back, and slides on the window glass (2a, 2b).
34b, 35b), a portion of the inner wall of the side wall (32a, 33a, 32b, 33b) that comes into contact with the lip portion (34a, 35a, 34b, 35b) when it is bent. A plurality of narrow grooves (M) extending in the direction are formed. With the above structure, even when the lip portion is in contact with the side wall, a passage for air is formed between the lip portion and the side wall, so that the generation of peeling noise is reduced. Further, since no projection is interposed between the tip portion of the lip portion and the side wall, a sufficient allowance for bending of the lip portion can be secured.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In this embodiment, the present invention is applied to the glass runs 3a and 3b for sliding windows described in the prior art. Therefore, regarding the structure described in the related art, the same reference numerals as those used in the description of the related art are assigned to the drawings, and the description thereof will be omitted. Only the characteristic portions will be described.

As shown in FIG. 1, the lip portions 34, 35
The tips of a, 34b, and 35b are formed to have a substantially semicircular cross section. And the side walls 32a of both glass runs 3a, 3b,
A narrow groove M having a substantially semicircular cross-section extending in the longitudinal direction is provided in a predetermined range including a portion of the inner surface of each of 33a, 32b, 33b, which is lower than the upper end thereof by approximately the extended length of the lip portion 34, 35a, 34b, 35b. A plurality is formed. The plurality of narrow grooves M are arranged at a constant pitch so as to form a sectional waveform. The diameter of the narrow groove M is the lip portion 34, 35a, 34b, 3
5b is formed smaller than the diameter of the tip portion.

Next, the operation of the glass run having the above-described structure will be described with reference to the outdoor portion of the glass run 3a. When the window glass 2a rattles in the indoor and outdoor directions, and as shown in FIG. 2, when the lip portion 35a is pushed by the window glass 2a, its base end is bent in an arc shape and its front end comes into contact with the side wall 33a. At this time, since a plurality of narrow grooves M are formed in the side wall 33a, an air passage is formed between the tip of the lip 35a and the side wall 33a. Therefore, the lip 35
No peeling noise is generated when the tip end of a is separated from the side wall 33a. The operation of the glass run 2a on the indoor side and the operation of the glass run 3a on both the indoor and outdoor sides are the same as those described above, and a description thereof will be omitted.

In this embodiment, the lip portions 34a, 35
Although the narrow groove M is formed only at the portion where the tips of the a, 34b, and 35b abut, the lip portions 34a, 35a, 34b, 35
A narrow groove M may be formed in a portion corresponding to the intermediate portion of b.
Further, the shapes of the tips of the lip portions 34a, 35a, 34b, 35b and the shape of the narrow groove M are not limited to a substantially semicircular cross section, but the lip portions 34a, 35a, 34b, 35
Any shape may be used as long as an air passage is formed between the b and the side walls 32a, 33a, 32b, 33b when the b contacts the side walls 32a, 33a, 32b, 33b.

[0013]

As described above, the peeling noise between the lip portion and the side wall can be reduced without reducing the bending allowance of the lip portion.

[Brief description of the drawings]

FIG. 1 is a sectional view of a sliding window of an automobile to which the present invention is applied.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a perspective view of a sliding window of an automobile to which a conventional glass run is applied.

FIG. 4 is a sectional view taken along the line AA in FIG. 3;

FIG. 5 is an enlarged view of a main part of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Sash 2a, 2b ... Window glass 1a, 1b ... Window glass sliding groove 30a, 30b ... Body part 32a, 33a, 32b, 33b ... Side wall 34a, 35a, 34b, 35b ... Lip part M ... Narrow groove

Claims (1)

[Claims] 1. A main body having a U-shaped cross section fitted into a window glass sliding groove of a sash, and extending so as to be folded inward from the front ends of both side walls of the main body to the inside of the main body. An automotive glass run having a lip portion slidingly contacting a window glass, wherein a plurality of narrow grooves extending in the longitudinal direction are formed in a portion of the inner surface of the side wall that contacts when the lip portion is bent. Car glass run.