JPH08192635A - Glass run channel - Google Patents

Abstract

PURPOSE: To improve a sealing function against water leakage or the like, and prevent the occurrence of a wind breaking noise during a high-speed travel by forming a sponge layer of a certain specific gravity on the base of a glass run channel, regarding a glass run channel of approximately U-shaped cross section having a seal lip in resilient contact with elevating glass. CONSTITUTION: This glass run channel 1 coupled to the door sash S of the door frame F of a vehicular door is formed out of synthetic rubber, so as to have approximately U-shaped cross section and has a seal lip 2 in resilient contact with elevating glass G. Also, a sponge layer of low specific gravity, or specific gravity between 0.2 and 0.3 is formed on a base 3 at the side of the glass G. As a result, the peripheral edge G1 of the glass G in a completely closed state is kept in contact with the sponge layer 4 of the channel 1, thereby preventing the appearance of a gap between the base 3 and the edge G1, and improving a sealing or wind breaking function. Also, durability can be improved to some extent, when a urethane coat 5 is applied to the surface of the layer 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass run channel fitted to a door sash of an automobile door to seal a peripheral surface of an elevating glass.

[0002]

2. Description of the Related Art As shown in FIGS. 3 and 4, when a vehicle door D is closed, a weather strip W is elastically brought into contact with an outer panel P of a vehicle body, and a door sash S on an inner peripheral side of a door frame F is provided with a lifting glass. A glass run channel 6 having a substantially U-shaped cross section, which is provided with a seal lip 2 that elastically contacts G, is fitted.

[0003]

However, the above-mentioned conventional glass run channel 6 has the lifting glass G as shown in FIG.
Since the gap d is set between the peripheral edge surface and the base surface of the glass run channel 6 so as to be able to absorb the variation in the built-in structure, the sealing performance against wind and rain is poor, and wind noise is generated during high-speed traveling. There were problems such as. In view of such conventional problems, it is therefore an object of the present invention to provide a glass run channel that improves the sealing performance and prevents wind noise.

[0004]

In order to achieve the above object, the structure of the present invention is, as shown in FIG. 1, substantially in cross section provided with a seal lip 2 which is fitted to a door sash S and elastically contacts with an elevating glass G. In the U-shaped glass run channel 1, a specific gravity of 0.2 to 0.
The sponge layer 4 of No. 3 is formed.

[0005]

Embodiments of the present invention will now be described in detail with reference to the drawings. In FIG. 1, reference numeral 1 denotes a glass run channel fitted to a door sash S of a door frame F. The glass run channel 1 is formed of a synthetic rubber material and has a substantially U-shaped cross section. A sponge layer 4 having a low specific gravity is formed on the side of the elevating glass 3 of FIG.

Therefore, when the elevating glass G is completely closed, its peripheral edge surface G1 comes into contact with the soft sponge layer 4 of the glass run channel 1. Therefore, unlike the conventional case, there is no gap between the base surface 3 and the peripheral edge surface G1.
Sealing property and wind noise are improved, and as shown in FIG. 2, the rise and fall of the elevating glass G due to the variation in the construction at the corner portion C of the door frame F causes a low density sponge with a specific gravity of 0.2 to 0.3. Due to the interposition of the layer 4, it is absorbed due to its very soft sponge characteristic, and it is also possible to cope with overcompression in the R portion. When the urethane coat 5 is applied to the surface of the sponge layer 4, the durability is improved to some extent.

[0007]

As described above, in the glass run channel of the present invention, since the sponge layer having a low specific gravity is formed on the base surface with which the peripheral end surface of the glass run channel comes into contact when the glass is closed, the glass run channel as in the prior art. Since there is no gap between the base surface and the base surface, the sealing properties such as water leakage are improved, and the wind noise during high speed running is not generated.

[Brief description of drawings]

FIG. 1 is a cross-sectional view taken along the line AA of FIG. 3 in which a glass run channel of the present invention is attached to a door sash.

FIG. 2 is an explanatory diagram showing a state in which the above glass run channel is attached to a door frame.

FIG. 3 is a side view of an automobile.

FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3 showing a conventional glass run channel mounted on a door sash.

[Explanation of symbols]

 1 Glass run channel 2 Seal lip 3 Base surface 4 Sponge layer 5 Urethane coat D Automotive door P Outer panel W Weatherstrip F Door frame S Door sash G Elevating glass G1 Peripheral end face C Corner part d Suki

Claims (1)

[Claims] 1. A glass run channel fitted in a door sash and having a seal lip that makes elastic contact with an elevating glass, has a substantially U-shaped cross section, and has a specific gravity of 0 on a base surface of the glass run channel which abuts on a peripheral end surface of the elevating glass. .2
A glass run channel characterized in that a sponge layer of 0.3 is formed.