JPH09142155A - Door glass run for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain complete adhesion without applying surface roughening at the time of connecting a molded part to a root part of an inner lip with smoothing treatment applied to the surface by cutting the root part obliquely, and connecting the molded part to a cut face without smoothing treatment applied. SOLUTION: Interior side cover lips 36 are cut along the root from the end cut faces of a horizontal member 3A and a vertical member 3B extrusion- molded, and the cover lips 36 are vertically cut at the tips. At this time, the angular parts of the glass runs 3A, 3B from which inner lips 54 are extended are cut off obliquely to form cut faces 6. Molded enlarged side walls 32' at the parts on the side of the horizontal member 3A and vertical member 3B are connected to the cut faces 6. Molded cover lips 36' extended from the enlarged side walls 32' are respectively connected with the horizontal side and vertical side as the ends of the cover lips 36 of the horizontal member 3A and vertical member 3B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door glass run mounted along the door frame of an automobile.

[0002]

2. Description of the Related Art As shown in FIG. 2, a door glass run (hereinafter, simply referred to as a glass run) 3 is attached to the inner periphery of a door frame 2 of a door 1 of an automobile. The glass run 3 includes an extruded member (hereinafter referred to as a horizontal member) 3A into which an upper edge of the door glass 4 is inserted when the door glass is closed, and an extruded member (hereinafter referred to as a vertical member) that guides a side edge of the door glass 4 that moves up and down. 3B, and a die-molding corner portion 3C in which these are connected by die-molding.

The horizontal member 3A and the vertical member 3B basically have the same structure and are generally used.
Both side walls 3 of the main body 31 having a U-shaped cross section as shown in FIG.
Inner lip 3 that holds the door glass from the tip of 2, 33
4, 35 extend, and cover lips 36, 37 are provided to extend outward from the tip and to sandwich the door frame 2 with the side walls 32, 33. The die-molding corner portion 3C has a structure that gently connects the two members 3A and 3B. The molding corner portion 3C is formed by setting the ends of the horizontal member 3A and the vertical member 3B to face each other and setting them in the cavity of the mold, and injecting the molding material into the cavity.

By the way, it is desirable that the die-molding corner portion 3C be as short as possible. The reason is 1
This is because the extrusion molding material and the molding material have different colors and luster, and the appearance is impaired if the molding corner is large.
Another reason is that the inner lip of the extruded product is treated with a lubrication treatment by spraying urethane or silicone resin on the surface of the glass contact side to improve the sliding property of the glass, following extrusion molding. However, lubrication treatment is not generally performed because it is difficult to perform treatment at the molding corner. Therefore, if the molding corner is long, the sliding resistance immediately before the door glass is completely closed increases.

On the other hand, in the door frame, it is very troublesome to bend and form a corner portion having a small radius of curvature.
Particularly in a press door, there is a limit to the narrowing down of the inner plate 21 having an uneven surface as shown in FIG.
Many of them are molded with a large radius of curvature as shown by a broken line B in FIG.

From the above circumstances, in the molding connection of the corner portion of the glass run, as shown in FIG. 1 (A), the main body portion 31 including the cover lip 37 on the outer side of the vehicle should be molded and connected within a short range. The outer side wall 32 and the cover lip 36 that sandwich the door frame inner plate 21 are adjusted to a large radius of curvature of the inner plate 21 in a long range while maintaining a good appearance with a long range. Forming the mold forming part.

In this case, the horizontal member 3A and the vertical member 3
In B, as shown in FIG. 3, the cover lip 36 is cut in a predetermined range from the end by the cut surface 5 in the vertical direction from the root thereof, and at the base of the inner lip 34, the side wall is enlarged to form an enlarged side wall 32 '. The cover lip 36 'following this is connected.

[0008]

However, the inner lips 34 of the horizontal member 3A and the vertical member 3B formed by extrusion molding,
Since a slipping layer is formed on the surfaces 341 and 351 of the door glass contacting side 35 of the door glass 35 from the root to the tip by spraying a lubricant or the like, an inner lip is formed when the extension side wall 32 'is connected by molding. Incomplete bonding to 34. For this reason, conventionally, the root portion of the inner lip 34 is ground with a glider or the like to roughen the surface, and then the molding connection is performed, resulting in poor workability.

Therefore, the present invention provides a molded connection structure for a glass run capable of completely adhering the enlarged side wall on the inner side of the vehicle of the glass run to the root of the inner lip without roughening the surface as in the prior art. The task was to do.

[0010]

According to the present invention, as shown in FIG. 1, a horizontal member 3A and a vertical member 3B for extrusion molding are connected by molding to form a corner portion 3C, and the molding corner portion 3C is In the glass run in which the side wall on the vehicle interior side and the cover lip are formed with a large radius of curvature in accordance with the inner plate of the door frame, the corner of the glass run that is the root of the cover lip 36 near the ends of the horizontal member 3A and the vertical member 3B. The cover lip 36 is cut off by cutting the portion in an oblique direction, and the enlarged side wall 32 ′ is connected to the oblique cut surface 6 by molding. In this way, by connecting with the cut surface 6 which has not been lubricated, the enlarged side wall 32 'is formed.
Can be completely molded and connected to the horizontal member 3A and the vertical member 3B.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, a horizontal member 3A and a vertical member 3B of a glass run 3 mounted on a door frame 2 (FIG. 2) have substantially the same structure and have a U-shaped cross section. An inner lip 3 that sandwiches the peripheral edge of the door glass 4 from both sides in opposite directions from both ends of the opposite side walls 32 and 33 of the portion 31.
4, 35 extend, and the cover lips 36, 37 extend outward from the tip so that the side walls 3
2, 33 and the inner plate 21 and the outer plate 22 of the door frame 2
It is designed to sandwich the edge of. Both the members 3A and 3B are extruded rubber bodies, and the outer surfaces 341 and 351 of the inner lips 34 and 35 are provided with a slipping layer by a slip treatment performed after the extrusion molding.

Both of the extrusion-molded members 3A and 3B are connected in a corner shape by molding. Molding corner 3
C is a rubber material or a thermoplastic elastomer (T) which is set in the cavity of the mold with the end portions of both members 3A and 3B facing each other at a substantially right angle and is molded in the cavity.
It is formed by injecting PE). In the molding corner portion 3C, the door frame outer plate sandwiching portion composed of the side wall 33 on the vehicle outer side and the cover lip 37 is curved so as to match the radius of curvature of the door frame outer plate 22. The door frame inner plate sandwiching portion composed of the side wall 32 'and the cover lip 36' of the door frame inner plate 21
Is curved to match the large radius of curvature of.

The details of the connection structure of the molding corner portion 3C will be described below together with the connection method.

Extruded horizontal member 3A and vertical member 3
When B is molded and connected, the cover lip 36 inside the vehicle is cut from the end cut surfaces of both members 3A and 3B along its root for a predetermined length, and the cover lip 36 is cut vertically at its tip. Thus, the cover lip 36 is cut off. In this case, the cut surfaces are, as shown in FIG. 1B, the glass runs 3A, 3B from which the inner lip 34 extends.
The cut surface 6 is obtained by cutting the corners of the diagonally.

Next, the end portions of both the members 3A and 3B with the cover lip 36 cut off at the end portions in this way are
The inner lips 34 and 35 are slightly opened so as to be separated from each other and face each other at a substantially right angle, and are set in the cavity of the die for molding the die-molding corner portion 3C, and the rubber material or TPE is placed in the cavity. Inject and connect between both terminals.

The molding corner portion 3C includes a first molding portion 3C ₁ for connecting the main body portion 31 of the horizontal member 3A and the vertical member 3B including both inner lips 34, 35 and the outer cover lip 37, and The inner side wall 36 of both members 3A, 3B is expanded to the inner diameter side to form a large radius of curvature, and a second mold forming portion 3C ₂ for connecting the cut-out portions of the cover lips 36 of both members 3A, 3B is formed. The both side walls 3C ₁ and 3C ₂ have a structure in which the inner side walls 32 and 32 'are integrated at the corner center. The portions of the enlarged side wall 32 'of the above-mentioned molding on the side of the horizontal member 3A and the vertical member 3B are connected by the oblique cut surface 6 with the cover lip 36 cut off. Molded cover lips 36 'extending from the enlarged side wall 32' have horizontal and vertical ends connected as ends of the cover lips 36 of the horizontal member 3A and the vertical member 3B, respectively.

In the glass run 3 described above, however, when the mold forming portion is connected to the root portion of the inner lip 34 whose surface has been lubricated, the root portion is cut obliquely and subjected to lubricity treatment. Since the mold forming portions are connected by the cut surface 6 which is not formed, a complete connection can be made without peeling.

[0018]

INDUSTRIAL APPLICABILITY According to the present invention, in a glass run in which horizontal and vertical extrusion molded members are connected by molding to form a corner portion, the molding connection is performed while avoiding the surface-slipped portion of both members. Therefore, the extrusion molding material and the molding connection portion can be reliably bonded.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, and FIG.
1 is a perspective view of a corner portion of a door glass run, FIG. 1B is a cross-sectional view taken along the line IB-IB of FIG. 1A, and FIG.
It is an IC-IC sectional view taken on the line of (A).

FIG. 2 is a front view of an automobile door to which the present invention is applied.

FIG. 3 is a conventional door glass run I B-I in FIG. 1 (A).
It is sectional drawing in the position which follows the B line.

[Explanation of symbols]

2 Door frame 21 Inner plate 22 Outer plate 3 Door glass run 3A Horizontal member 3B Vertical member 3C Molding corner part 3C ₁ First mold molding part 3C ₂ Second mold molding part 32, 33 Side wall 34, 35 Inner lip 36 , 37 Cover lip 32 'Expanded side wall 6 Diagonal cut surface

Claims (1)

[Claims] 1. A door glass run mounted along a door frame of an automobile in which a radius of curvature of an inner plate at a corner portion is larger than that of an outer plate, the door glass run being relative to the ends of both side walls of a main body portion having a substantially U-shaped cross section. A cover that forms a sandwiching portion that sandwiches the inner plate and the outer plate by an inner lip that extends in the opposite direction and sandwiches the periphery of the door glass, and an inner lip that extends so as to invert outward from the tips of the both side walls and that sandwiches the inner plate and the outer plate. With lip
In a door glass run in which a corner portion is formed by connecting the ends of a horizontal member and a vertical member of extrusion molding by molding, the molding corner portion is formed so that the both end portions follow the corner shape of the inner plate. A first mold-forming portion to be connected, and integrally with the first mold-forming portion, a sandwiching portion for sandwiching the inner plate in a range from a front position of the end of the horizontal member to a lower position of the end of the vertical member is adjusted to the curvature of the inner plate. Therefore, the side wall of the sandwiching portion is constituted by a second molding portion that expands in the inner diameter direction, and the side wall of the second molding portion and the connecting portion between the horizontal member and the vertical member are connected to the main body of both members. The outer surface of the corner portion from the side wall of the portion to the inner lip is cut diagonally, and the second surface is cut on the cut surface.
An automobile door glass run with a structure in which the side walls of the molded part of are joined together.