JP2780921B2 - Glass-run connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass run for slidably sealing a window glass of an automobile, and more particularly to an improvement in a connection structure between an extruded glass run and a molded portion.

[0002]

2. Description of the Related Art The periphery of a window glass in a front door or a rear door of an automobile is slidably held and sealed by a glass run having a substantially U-shaped cross section attached to a door sash. The glass run is generally extruded into the same cross-sectional shape using a rubber-based material, has an outer leg and an inner leg on both sides of a bottom wall, and has the outer leg and the outer leg. A seal lip is formed from the tip of the inner leg to the bottom wall to abut against the surface of the window glass. At the corners and the like of the door, the terminals of the two extruded glass runs are connected to each other by a molding part to be molded. That is, the end portions of the glass run are inserted into the openings of the mold having substantially the same cross-sectional shape as the glass run, and a rubber material is injected into the cavity of the mold whose both ends are closed by the glass run, and each glass run is injected. Then, a continuous molded part is formed.

In recent years, in order to reduce the level difference between the door outer panel and the surface of the window glass, the window glass is biased toward the outside of the vehicle from the center of the door sash to reduce the height of the surface of the vehicle to a flash surface. Are often employed. In such a case, the glass run holding the peripheral portion of the window glass becomes asymmetric between the inside and the outside of the vehicle, and the legs and the seal lip on the outside of the vehicle become very thin. Therefore, when connecting this kind of glass run to the above-mentioned molded part, if the cross-sectional shape of the outside portion of the molded part is exactly the same as the cross-sectional shape of the extruded glass run, that is, the molded part side is also thin. If a simple seal lip is formed and made continuous with the seal lip on the extruded product side, the joint area between the two becomes very small, so that a cut is likely to occur from the seal lip tip along the boundary. .

[0004] For this reason, for example, Japanese Patent Publication No. 5-5
No. 3652 proposes that the outer seal lip is squashed so as to be in close contact with the outer leg, and the squeezed state is connected to the molded part. FIG. 8 shows this conventional configuration, which is necessary when a pair of glass runs 41, 41 each having an outer seal lip 44 at the tip of an outer leg 43, are connected to each other by an extruded portion 42. The sealing lip 44 is not separated from the molded portion 42 and has a cross-sectional shape such that the tip of the outer leg portion 43 is thickened. Then, the outer seal lip 44 is attached to the outer leg 4.
It is connected to the terminal of the glass run 41 pressed into the shape 3.

[0005]

However, in the above-mentioned conventional configuration, the outer side sealing lip 44 is molded while being pressed against the outer side leg 43, so that the terminal portion of the glass run 41 or the molded portion is formed. As shown in FIG. 8, the sealing surface with the window glass at 42 is partially retracted to the outside of the vehicle, so that there is a problem that the sealing property with respect to the window glass is deteriorated.

[0006]

SUMMARY OF THE INVENTION The present invention has a substantially U-shaped cross section having a bottom wall, a vehicle outer leg, and a vehicle inner leg, and a tip of the vehicle outer leg and the vehicle inner leg. The end of the extruded glass run, in which the outer seal lip and the inner seal lip that respectively contact the window glass surface are formed toward the bottom wall, is connected to the molded part having substantially the same cross-sectional shape. In the glass run molded portion connection structure, the exterior side wall portion of the molded portion that is continuous with the exterior leg portion and the exterior seal lip is separated into an exterior leg portion corresponding portion and an exterior seal lip corresponding portion. And the terminal of the outer leg is swelled and deformed from the outside to the inside of the glass run so as to be integrated with the outer seal lip, and the outer side of the molded portion is formed. The part of the terminal, is formed into a cross-sectional shape along the outer shape of the deformed cross-sectional shape, the car window glass
The outer side wall of the molded part against the outer surface
Seal surface of the extruded exterior seal lip
It is characterized by being continuous at almost the same position as the surface .

[0007]

The extruded end of the glass run is inserted into the opening of the mold for molding the molded part, and the molded part is molded in this state. In this state, the molded part is inserted. In this state, the terminal of the outer leg is swelled and deformed from the outside to the inside of the glass run so as to be integrated with the outer seal lip. Then, the terminal of the side wall portion on the outside of the vehicle in the molded portion is molded along the outer shape of the deformed cross-sectional shape, and both are continuous. Therefore, the sealing surface of the window glass with respect to the vehicle outer surface is secured at substantially the same position as the general portion of the glass run. Also, there is no abrupt change in wall thickness at the boundary with the molded part, and no abrupt change in the seal reaction force.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows an embodiment in which the terminal of an extruded glass run 1 is connected to an L-shaped bent portion 2 corresponding to a corner of an automobile door.

FIG. 2 shows a cross-sectional shape of a general portion of the glass run 1. The glass run 1 is integrally extruded using a rubber-based material, and has a substantially U-shaped cross-section having a bottom wall 3, an outer leg 4, and an inner leg 5.
An outer seal lip 6 and an inner seal lip 7 that contact the surface of the window glass 15 from the tips of the outer leg 4 and the inner leg 5 are formed obliquely toward the bottom wall 3. A welt portion 8 having a substantially U-shaped cross section is formed continuously with the vehicle inner leg portion 5. The glass run 1 is fitted and mounted in a door sash portion constituted by a door inner panel 11, a door outer panel 12, and a channel 13, and a welt portion 8
Are adapted to clamp the flange portion 16 on the inside of the vehicle. The window glass 15 is biased toward the door outer panel 12 in the door sash portion, and the outer leg 4 and the outer seal lip 6 of the glass run 1 correspond to the inner leg 5 and the inner side. It is configured to be thinner than the seal lip 7. Reference numeral 14 denotes a molding mounted along the door opening edge of the door outer panel 12.

As shown in FIG. 1, the end of the glass run 1 having the cross-sectional shape configured as described above is connected to the mold forming section 2 at the boundary 10.
As shown in FIG. 4, the glass run 1 has substantially the same cross-sectional shape as the glass run 1 described above. That is, the bottom wall portion 21 corresponding to the bottom wall portion 3 of the grass run 1 and the vehicle interior leg portion 5 of the grass run 1
, An inner seal lip 23 corresponding to the inner seal lip 7 of the glass run 1, and a welt portion 24 corresponding to the welt 8 of the glass run 1. And have substantially the same cross-sectional shape. A side wall 25 corresponding to the outer leg 4 of the glass run 1 is formed on the outer side of the molded portion 2, and the side wall 25 corresponds to the outer seal lip 6 of the glass run 1. It has a thick cross-sectional shape integrated with the part. That is, the side wall portion 2 on the vehicle exterior side of the molded portion 2
The portion 5 corresponding to the outer leg portion 4 of the glass run 1 and the portion corresponding to the outer seal lip 6 are not separated, and the outer seal lip 6 is connected to the outer leg portion 4 as shown in FIG. It is formed in a cross-sectional shape along the outer shape in a state where it is spread from. Accordingly, the inner surface of the side wall portion 25 of the molded portion 2 comes into contact with the surface of the window glass 15 as a sealing surface similarly to the outer seal lip 6 of the glass run 1.

On the other hand, at a portion along the boundary 10 between the glass run 1 and the molded portion 2, as shown in FIG. Are formed, whereby both the glass run 1 and the molded portion 2 have different cross-sectional shapes of the vehicle outer side portion. As shown in FIG. 7, the groove 26 is formed by partially projecting a ridge 30 in a cavity 29 of a mold 28 for molding the molded portion 2. , Are provided only in a predetermined range including the boundary 10. The mold 28 is formed by laminating a plurality of metal plates as shown in FIG.

FIG. 3 shows a cross-sectional shape of a terminal portion of the glass run 1 having the concave groove portion 26. The protrusion 30 of the mold 28 described above causes an intermediate portion of the outer leg portion 4, specifically, a vehicle. A portion corresponding to the back surface of the outer seal lip 6 is locally swelled and deformed from the outside of the vehicle to the inside of the glass run 1,
As a result, the outer leg 4 and the outer seal lip 6 are in contact with each other. And, in the molding part 2 which is continuous with the end of the glass run 1, the ridge 30
The outer side wall portion 2 is formed by the concave groove portion 26 formed by
5 The tip has a partially thinned cross-sectional shape. That is, as shown in FIG. 3, the outer side leg portion 4 and the outer side seal lip 6 which are deformed are formed into a cross-sectional shape along the outer shape. As described above, the molding section 2 is formed by setting the glass run 1 in the mold 28 and injecting a rubber material into the cavity 29 thereof.
At the same time as the molding, it is in a state of being joined to the glass run 1. And the terminal part of grass run 1
When the molding part 2 is formed, it receives heat from the metal mold 28, so that it is hammered while being pressed by the ridges 30 and the cross-sectional shape as shown in FIG. 3 is maintained.

In the structure of the above embodiment, since the thin outer seal lip 6 and the outer leg 4 are joined to the molded part 2 in a state where they are crushed, the joint area is large. Thus, separation along the boundary 10 is less likely to occur. As shown in FIGS. 5 and 6, at the end of the glass run 1, the outer leg 4 is pushed into the inside of the glass run 1 with reference to the sealing surface of the outer sealing lip 6. Does not change, and the sealing performance with respect to the window glass 15 does not decrease at all near the boundary 10. It should be noted that the sealing surface is also ensured on the side of the molding part 2 so as to be continuous with the sealing surface at the end of the glass run 1. In the end portion of the molded portion 2 that is continuous with the end of the glass run 1, the side wall portion 25 that is in contact with the window glass 15 is partially thinned by the concave groove portion 26, and the thickness is substantially the same as the end of the glass run 1. Therefore, the seal reaction force against the window glass 15 does not suddenly change before and after the boundary 10. Therefore, it is possible to more reliably prevent a decrease in the sealing property that is likely to occur near the boundary 10. In the above embodiment, the groove 2
6 is provided only in a part including the boundary 10, and in the other part of the molded part 2, the side wall part 25 is relatively thick as shown in FIG. The mounting posture can be stabilized.

[0015]

As is apparent from the above description, according to the present invention, since the thin outer seal lip is joined to the molded portion while being integrated with the outer leg, the joint area is increased. As a result, peeling along the boundary between the glass run and the molded portion can be prevented. In addition, the position of the sealing surface of the outer seal lip abutting on the window glass does not change even near the boundary with the molded portion, and the deterioration of sealing performance due to the generation of a gap unlike the conventional case does not occur. Further, there is no sharp change in the thickness of the seal lip portion before and after the boundary between the glass run and the molded portion, and the seal reaction force can be gradually changed. For this reason, it is possible to more reliably prevent a decrease in sealing performance near the boundary.

[Brief description of the drawings]

FIG. 1 is a perspective view of a connection portion between a glass run and a molded portion according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a cross-sectional shape of a general portion of a glass run.

FIG. 3 is a cross-sectional shape of a terminal of a glass run; FIG.
Sectional drawing along the A line.

FIG. 4 is a cross-sectional view of the general part of the molded part,
Sectional drawing along the B line.

FIG. 5 is a sectional view taken along the line CC of FIG. 2;

FIG. 6 is a perspective view of a main part of a glass run which is continuous with a molding part.

FIG. 7 is a cross-sectional view of a mold for molding a molded portion.

FIG. 8 is a partially cutaway perspective view of a glass run showing a conventional connection structure for a molded part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Glass run 2 ... Mold forming part 4 ... Outer side leg part 6 ... Outer side seal lip 10 ... Boundary 25 ... Side wall part 26 ... Concave groove part

Claims (1)

(57) [Claims] 1. A cross section having a bottom wall portion, a vehicle outer leg portion, and a vehicle inner leg portion having a substantially U-shaped cross-section, and abutting against the surface of the window glass from the tips of the vehicle outer leg portion and the vehicle inner leg portion. Glass run molded part connection structure in which the end of an extruded glass run having an outer seal lip and an inner seal lip formed toward a bottom wall is connected to a molded part having substantially the same cross-sectional shape. In (1), an outer side wall portion of a mold forming portion that is continuous with the outer leg portion and the outer seal lip is formed into a cross-sectional shape in which a portion corresponding to the outer leg portion and a portion corresponding to the outer seal lip are not separated. At the same time, the terminal of the outer leg was swelled and deformed from the outside to the inside of the glass run so as to be integrated with the outer seal lip, and the terminal of the outer side wall in the molded portion was deformed. By molding the cross-sectional shape along the outer shape of the surface shape, the mold for the exterior surface of the window glass
Extrusion molding of the sealing surface of the side wall part on the outside of the vehicle in the molding part
At the same position as the sealing surface of the outer seal lip
A glass- run molded part connection structure characterized by being continuous .