JPH1148795A - Glass run channel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glass run channel to properly cope with eccentricity on fittings of the window glass of a door and maintain elastic deformation. SOLUTION: This glass channel 10 is formed such that a body part approximately in a U-shape in cross section, a seal lip part 3 curved from the side wall terminal end part on the car outside of the body part toward the inside, and a hollow seal part 4 protruded from a bent corner part, continued to the side wall terminal part on the car inside of the body part, are integrally molded. Further, a bent corner part 11 is curved as it is deviated closer to a side wall on the car inside with a given deviation amount based on the reference line of an inside surface to intercouple a hollow inner peripheral end part 4a, situated closer to a side wall on the car inside, and the side wall starting end part on the car inside of the body part 2. This constitution increases bending rigidity and the spring properties of the bent corner part 11 of the hollow seal part 4 and a peripheral wall in the vicinity thereof, increases bearing to push back a window glass WG toward a given position, prevent the occurrence of a permanent strain of elastic deformation, and excellently maintains sealing ability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber-like elastic glass run channel inserted into a door sash of an automobile.

[0002]

2. Description of the Related Art Conventionally, a glass run channel which seals an upper edge of a window glass erected vertically on a door sash constructed above a belt line at an upper limit position is generally shown in FIGS. A skeleton 2 having a substantially U-shaped cross-sectional shape as shown in a cross section of the main part;
A seal lip portion 3 that curves inward from the outer end wall end 2a of the vehicle body, and a bent lip portion 5 that is continuous with the inner end wall end portion of the frame 2 protrudes toward the seal lip portion 3. The hollow seal portion 4 provided is integrally formed. Further, the hollow seal portion 4 and the bent corner portion 5 are formed so that the hollow inner peripheral end portion 4a near the inner wall of the vehicle and the frame portion 2
An extremely acute angle with a bending radius almost zero from a position deviated on the reference line YY of the inner side surface 2c of the inner side wall connecting the inner end wall start end 2b of the inner side wall and slightly toward the seal lip portion 3. Was set to

The above-mentioned conventional glass run channel 1 is formed by extruding a rubber-like elastic material such as an ethylene-propylene solid rubber material into a desired shape. As shown in FIG. 3, the conventional glass run channel 1 in which the cross section of the door sash DS is inserted into a substantially U-shaped roof portion is provided with the sealing lip portion 3 and the sealing lip portion 3 before entering the window glass WG. When the window glass WG enters as shown in FIG. 4 while the hollow sealing portion 4 contacts the opposing peripheral wall surfaces and curves slightly inward, the sealing lip portion 3 and the hollow sealing portion 4 The opposing peripheral wall surfaces are further curved inward to separate and allow the window glass WG to enter. Note that a gap between the door sash DS in which the glass run channel 1 is fitted and the body panel BP is sealed by a weather strip 6 fixed to the door sash DS.

Further, as another conventional glass run channel, there has been proposed a glass run channel 1 having a bent corner 5 'as shown in FIG. The bent corner 5 ′ of the glass run channel 1 corresponds to the reference line Y.
It is formed so as to be curved with a relatively small bending radius r from a position on -Y or slightly deviated toward the seal lip portion 3. Another glass run channel 1
Before the window glass WG enters, as shown in FIG. 5, the seal lip portion 3 and the hollow seal portion 4 contact the opposing peripheral wall surfaces and bend slightly inward, while FIG. As shown, when the window glass WG enters,
Opposite peripheral wall surfaces of the seal lip portion 3 and the hollow seal portion 4 are separated and further curved inward to allow the window glass WG to enter. Note that a gap between the door sash DS in which the glass run channel 1 is fitted and the body panel BP is sealed by a weather strip 6 fixed to the door sash DS.

[0005]

However, in the conventional glass run channel 1 shown in FIGS. 3 and 4, especially, as shown in FIG. When it is built with an eccentric amount d of, for example, about 3 mm, and rises, a part of the peripheral wall surface of the hollow seal portion 4 comes into surface contact with the window glass WG in a relatively large area. The bent corner portion 5 of the hollow seal portion 4 and the peripheral wall surface in the vicinity thereof are formed by the inner side surface 2c.
It was easy to fold in close contact with the top.

Further, if the hollow seal portion 4 is excessively compressed due to the eccentricity of the window glass WG, the elastic deformation of the glass run channel 1 is reduced as shown by a curve A in FIG. While changing with time to a large compression set relatively early, the rate of increase in the compressive load (force for pushing back the window glass WG) with respect to the eccentricity d of the window glass WG is low as shown by a curve A in FIG. Therefore,
There was a drawback that the sealing performance was significantly reduced.

[0007] On the other hand, another conventional glass run channel 1 shown in FIGS. 5 and 6 is particularly provided on the reference line Y-Y or slightly above the seal lip portion 3 as shown in FIG.
Is relatively small from the position biased toward
Due to the bent corner 5 ′ curved in the above, the drawback that the bent corner 5 of the hollow seal portion 4 and the peripheral wall surface in the vicinity thereof are folded in a state of being in close contact with the inner side surface 2c is corrected to some extent. It was possible to prevent the elastic deformation from changing to the permanent compression set with time at an early stage. However, due to the geometrical shape of the bent corner portion 5 and the peripheral wall surface of the hollow seal portion 4 near the bent corner portion, the contact area of the partial wall surface of the hollow seal portion 4 with the window glass WG is point contact. However, there is a disadvantage that the sealing property with respect to the window glass WG is significantly reduced from a relatively early stage.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a glass run channel which can properly cope with the eccentricity of the installation of a window glass and maintain elastic deformation. It is.

[0009]

SUMMARY OF THE INVENTION The object of the present invention is as follows.
A rubber-like elastic glass run channel inserted into a door sash of an automobile, having a substantially U-shaped cross section and a seal curving inward from an end of each of the outer sides of the body. A lip portion, and a hollow seal portion protruding from the bent corner portion continuous to the end portion of the inner side wall of the body portion toward the seal lip portion, and further formed integrally with the hollow seal portion. The bent corner portion of the portion is a predetermined deviation from a reference line on the inner surface of the inner car wall connecting the hollow inner peripheral end near the inner car inner wall and the inner car interior wall start end of the body portion. The glass run channel is characterized in that the glass run channel is defined so as to be curved with a certain amount of bias toward the inner side of the vehicle.

[0010]

The glass run channel according to the present invention comprises a skeleton having a substantially U-shaped cross section, a seal lip that curves inward from the end of the outer wall of the skeleton, and a lip of the skeleton. It is formed by integrally molding a hollow seal portion projecting toward the seal lip portion from a bent corner portion that is continuous with the inner side wall end portion, and the bent corner portion of the hollow seal portion is A predetermined amount of deviation from a reference line on an inner side surface of the inner side wall connecting a hollow inner peripheral end near the inner side wall and a start end of the inner side wall of the skeleton portion; By bending while biasing, the bending rigidity and spring property of the hollow corner portion and the peripheral wall surface in the vicinity thereof are increased, and as a result, in accordance with the eccentricity due to the mounting of the window glass, Feet to push the window glass back into place While surface pressure is obtained, the compression set of the elastic deformation due to the excessive eccentricity of the window glass is avoided.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the glass run channel of the present invention will be described below in detail with reference to the accompanying drawings. FIGS. 1 and 2 each show a cross section of a main part of the glass run channel similarly to FIGS. 3 to 6, and each member having the same configuration as that of the conventional glass run channel is denoted by the same reference numeral. Will be explained. As shown in FIG. 1, a glass run channel 10 according to the present invention comprises a frame 2 having a substantially U-shaped cross section similarly to the above-described conventional glass run channel 1, and a wall outside the vehicle of the frame 2. A seal lip portion 3 curving inward from the end portion 2a, and a hollow seal protruding from the bent corner portion 11 continuous to the end portion of the inner wall of the vehicle body portion 2 toward the seal lip portion 3. The hollow corner portion 11 of the hollow seal portion 4 is formed integrally with the hollow inner peripheral end portion 4a near the inner wall of the vehicle and the inner end of the inner wall of the body portion 2. A predetermined deviation amount a with respect to the reference line Y-Y of the inner side surface 2c of the inner side wall connecting to the vehicle interior portion 2b.
Accordingly, the vehicle is curved while being biased toward the inner wall of the vehicle.

Further, the bent corner portion 11 of the hollow seal portion 4 has an offset amount a of 0.2 to 1.0 mm with respect to the reference line Y-Y from the vicinity of the inner end of the inner wall of the frame portion 2 from the vicinity of the end. While being deflected toward the inner side of the vehicle, it is set to an extremely obtuse angle with a bending radius R as large as possible in space, for example,
A bending radius R of 0.5 to 1.0 mm is preferred. The deviation a is
If the thickness is less than 0.2 mm, the compression set becomes relatively large, the compression load is reduced, and the sealing performance is significantly reduced. On the other hand, if the deviation amount a exceeds 1.0 mm, it becomes impossible to secure the thickness of the bent corner portion 11, and as a result, it becomes difficult to secure the initial compression load.
If the bending radius R is less than 0.5 mm, the compression set becomes relatively large, the compression load is reduced, and the sealing performance is significantly reduced. On the other hand, the bending radius R
Exceeds 1.0 mm, it becomes impossible to secure the thickness of the bent corner portion 11, and as a result, it becomes difficult to secure the initial compression load. The glass run channel 10 of the present invention is formed by extruding a rubber-like elastic body such as an ethylene-propylene solid rubber material into a desired shape.

The glass run channel 10 in which the door sash DS is inserted into a roof portion having a substantially U-shaped cross section.
Before the window glass WG enters, as shown in FIG. 1, the seal lip portion 3 and the hollow seal portion 4 contact the opposing peripheral wall surfaces and bend slightly inward, while FIG. As shown, when the window glass WG enters,
Opposite peripheral wall surfaces of the seal lip portion 3 and the hollow seal portion 4 are separated and further curved inward to allow the window glass WG to enter. The glass run channel
The gap between the door sash DS to which 10 is fitted and the body panel BP is sealed by a weather strip 6 fixed to the door sash DS.

The window glass erected vertically on the door sash DS formed above the belt line.
As shown in FIG. 2, the glass run channel 10 for sealing the upper edge at the upper limit position of the WG has an eccentricity of about 3 mm, for example, when the window glass WG is closer to the inside of the vehicle or closer to the hollow seal portion 4. When it is built with an amount d and rises, a part of the peripheral wall surface of the hollow seal portion 4 comes into surface contact with the window glass WG in a relatively large area, while it comes in contact with the reference line Y-Y The bent corner portion 11 which is bent at a relatively large bending radius R while being deviated by a predetermined deviation amount a.
The peripheral wall of the hollow seal portion 4 near the surface has a surface sufficient to push the window glass WG back to a predetermined position in accordance with the eccentricity d of the window glass WG due to the increased bending rigidity and spring property. Pressure is obtained, and compression deformation of elastic deformation due to excessive eccentricity of the window glass WG is avoided for a long time.

Even if a part of the peripheral wall surface of the hollow seal portion 4 continues to be excessively compressed in a state of being in close contact with the inner surface 2c, the elastic deformation due to the bending stiffness and springiness causes permanent deformation. To prevent the sealing property from remarkably decreasing. When the eccentricity of the window glass WG is set near the outside of the vehicle or near the seal lip portion 3, the compression of the hollow seal portion 4 by the window glass WG is reduced, so that the permanent deformation is reduced. No trouble occurs. On the other hand, even if the seal lip portion 3 is excessively compressed, the problem of permanent deformation is unlikely to occur due to its structure. Further, the glass run channel 10 of the present invention can be applied to a pillar portion in addition to a roof portion of a vehicle.

[0016]

The glass run channel 10 of the present invention described above has the following novel effects. That is, the glass run channel 10 of the present invention has the skeleton portion 2 having a substantially U-shaped cross section, the seal lip portion 3 that curves inward from the outer end 2a of the outer wall of the skeleton portion 2, and A hollow seal portion 4 protruding from the bent corner portion 11 continuing to the end of the inner wall of the vehicle body portion 2 toward the seal lip portion 3; The reference of the inner side surface 2c of the inner side wall connecting the hollow inner peripheral end portion 4a near the inner side wall of the portion 4 and the inner side inner wall start end 2b of the frame body portion 2 Line Y-
Y is bent toward the inner side of the vehicle with a predetermined amount of deviation a with respect to Y. In particular, the bent corner portion 11 extends from the vicinity of the end of the inner side wall of the body 2 to the reference line Y−
It is set to be extremely obtuse at a bending radius R as large as possible in space, for example, at a bending radius R of 0.5 to 1.0 mm, while biasing toward the inner side of the vehicle with the above-mentioned deviation amount a of 0.2 to 1.0 mm with respect to Y. Therefore, the bending stiffness and resilience of the bent corner 11 and the peripheral wall surface in the vicinity thereof are increased, and as a result,
Even if the eccentricity occurs in the mounting of the window glass WG, the surface pressure that pushes the window glass WG back toward a predetermined position is increased, and the permanent deformation of the elastic deformation due to the excessive eccentricity of the window glass WG is reduced. It has become possible to avoid this, and it has become possible to maintain good sealing properties.

In particular, as shown by the curves B in FIGS. 7 and 8, the change over time in the compression set in the glass run channel 10 of the present invention is the same as that of the conventional glass run channel 1.
(Curve A), and can be stabilized for a long period of time, and the rate of increase of the compressive load (force to push back the window glass WG) with respect to the eccentricity d of the window glass WG is also small. It became possible to remarkably increase as compared with (curve A).

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part of a glass run channel of the present invention before entering a window glass.

FIG. 2 is a cross-sectional view of a main part of the glass run channel of the present invention after entering a window glass.

FIG. 3 is a cross-sectional view of a main part of a conventional glass run channel before entering a window glass.

FIG. 4 is a cross-sectional view of a main part of a conventional glass run channel after entering a window glass.

FIG. 5 is a cross-sectional view of a main part of another conventional glass run channel before entering a window glass.

FIG. 6 is a cross-sectional view of a main part of another conventional glass run channel after entering a window glass.

FIG. 7 is a graph showing the relationship between the compression set and time of the glass run channel of the conventional and the present invention.

FIG. 8 is a graph showing the relationship between the compressive load and the d value of the glass run channel of the conventional and the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conventional glass run channel 10 Glass run channel of the present invention 2 Body part 2a End part outside car 2b Beginning part inside car 2c Inner side surface 3 Seal lip part 4 Hollow seal part 4a Hollow inner peripheral end part 5 Bent corner Part 5 'Bent corner 6 Weather strip 11 Bend corner R Bend radius d Eccentricity of window glass YY Reference line a Deflection of bent corner WG Window glass DS Door sash BP Body panel

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Mikio Suzuki 1-4-1 Chuo, Wako-shi, Saitama Pref.

Claims (1)

[Claims] 1. A rubber-like elastic glass run channel inserted into a door sash of an automobile, wherein the frame has a substantially U-shaped cross-sectional shape, and a plurality of outer sides of the frame (2). A seal lip portion (3) that curves inward from the wall end portion (2a), and a bent corner portion (11) that is continuous with the inside wall portion of the body portion (2) and the seal lip portion (3). ) And a hollow seal portion (4) protruding toward the hollow seal portion (4), and the bent corner portion (11) of the hollow seal portion (4).
Is a reference for the inner side surface (2c) of the inner car inner wall connecting the hollow inner peripheral end (4a) near the inner car inner wall and the inner car interior wall start end (2b) of the frame (2). A glass run channel defined so as to be curved with a predetermined amount of deviation (a) with respect to a line (Y-Y) while being deflected toward the inner side of the vehicle.