JP3339414B2 - Car door glass run - Google Patents

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 an inner periphery of an automobile door.

[0002]

As shown in Prior Art FIG. 3, the inner periphery of the door frame 2 of a motor vehicle door 1 along which, together with the guide the vertical movement of the door glass 6, when the door glass 6 is closed, the A door glass (hereinafter referred to as a glass run) 3 for sealing between the periphery and the door frame 2 is attached in series.

The glass run 3 is made of rubber, an elastomer or a synthetic resin, and is formed by extruded glass runs 3A, 3A.
B and 3C are connected to each other at molded corners 3D and 3E to form a series. The glass run 3 has substantially the same cross-sectional shape over its entire length, and as shown in FIG.
The sealing lips 33a, 33b extend inward from the tips of the side walls 32a, 32b of the main body 30 having a U-shaped cross section composed of the opposed side walls 32a, 32b, and the molding lips 34a extend outward from the tips. , 3
4b extends.

The glass run 3 is mounted by fitting the main body portion 30 into a channel portion 20 which is opened on the inner periphery of the door frame 2, and the molding lips 34a, 34b and the side walls of the main body portion 30 facing the lips 34a, 34b, respectively. 32a, 3
2b sandwiches both side walls of the channel portion 20, and seal lips 33a and 33b sandwich and seal the periphery of the door glass 6 from both sides.

Since the glass runs 3A, 3B and 3C are difficult to extrude because the tips of the opposing seal lips 33a and 33b are almost in contact with each other, the opening side is widened and both lips 33a and 33b are separated. The molding corners 3D and 3E which are extruded in the shape and connect these are also shown in FIG.
Similarly, as shown in FIG.

[0006]

The glass run 3 is sandwiched between both sides in the direction indicated by the white arrow in FIG. 5 with fingers or the like, and the both sides of the bottom wall 31 are centered on thin corners 311a and 311b at both ends. 32a and 32b are fitted in the channel portion 20 by rotating in opposite directions such that their leading ends approach and become substantially parallel to each other.

However, when the side walls 32a, 32b of the glass run 3 are turned inward as described above, the molding corner 3
In the corner portions 3D, 3E, particularly the bent portion having a substantially right angle, the radius of curvature is small on the opening side, that is, on the inside diameter side.
As a result, the length in the direction along the bending direction is reduced relatively to the outer diameter side, so that the side walls 32a, 32b, the molding lips 34a, 34b integral therewith, and the sealing lips 33a, 33b As shown in FIG. 6, a slack 7 is formed on the inner diameter side, and the bending center bulges outward in the width direction.

For this reason, a large pushing force is required when fitting the molding corner 3D into the channel 20, and the mounting workability is poor. And sealing lips 33a, 33b
Swelling reduces the sealing performance between the door glass 6 and the swelling of the side walls 32a, 32b and the molding lips 34a, 34b reduces the tight fit between the side walls of the channel portion 20 and the molding lip 34a. , 34b and the side wall of the channel portion 20 are opened, and the appearance around the door frame 2 is impaired.

Accordingly, the present invention provides a glass run which is free from the above-mentioned excessive thickness and swelling when the molded corner is fitted into a door frame, has good mounting workability, and has a good appearance. This was done as an issue.

[0010]

SUMMARY OF THE INVENTION The present invention relates to an automobile door.
Door glass run mounted along the door frame
The cross section of the bottom wall and the opposite side wall
To the inner channel of the door frame
The main body and the front and rear ends of the side walls are opposed to each other.
The seal lip extends in the direction
Roll along the outer surface of the side wall.
At the corner where the both ends of the bottom wall and the side wall are connected.
Extrusion molding doors with notches formed to make the corners thinner
The corners are formed by connecting the ends of Agullan Run by molding.
In the formed door glass run, at least
The bottom wall of the corner protrudes outward and the top end forms a bending point.
Formed in a chevron cross section and deeper than the notch at the top end
Form a notch to make the top end thinner than the corners
You .

When the main body with its opening side expanded is sandwiched from both side surfaces when the molding corner is fitted into the channel portion of the door frame, the top end is bent and the molding corner is formed at the center in the width direction. Since the left half and the right half are folded and the both sides are parallel, the side walls have very little relative change in the length along the bending direction between the opening side and the bottom wall side, Surplus and swelling are reduced.

In this case, if the thickness of the top end is made thinner than the corners on both sides of the bottom wall, only the top end is bent when the both sides of the main body are sandwiched, and the angles of the corners on both ends of the bottom wall are almost the same. Since there is no change, the above-mentioned excess meat and swelling are more reliably prevented.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 3, a door glass run 4 has glass runs 4A, 4B,
4C are formed in a series by connecting them at the molding corners 4D and 4E, and attached along the inner periphery of the door frame 2. The molding corners 4D are made of extruded glass runs 4A, 4B.
Are set in a mold with their terminals facing each other, and a rubber material of the same material as the glass runs 4A and 4B is injected into the mold to be molded. The molding corner 4E is similarly formed between the glass runs 4A and 4C.

The glass run 4 has a substantially common cross-sectional shape over the entire length. FIG. 1 (A) shows the extruded glass runs 4A and 4B and the molding corners 4 connecting them.
D, the glass run 4 includes a main body 40 composed of a bottom wall 41 and side walls 42a and 42b extending from both ends thereof and facing each other, and seal lips 43a and 43b are provided in the facing direction from the tips of the side walls 42a and 42b. Is extending. Also, the molding lips 44a, 44b are extended upward along the outer surfaces of the side walls 42a, 42b while being turned outward from the tip.

The bottom wall 41 has a substantially straight inclined surface on both left and right sides, and a top end 410 forms an obtuse bending point, and is formed in a mountain shape in cross section protruding outward. Corners 411 where both ends of the bottom wall 41 and the side walls 43a and 43b on both sides are connected.
A shallow notch 45 is formed on the inner surface side of a and 411b so as to be thin. A notch 46 deeper than the notch 45 is formed on the inner surface of the top end 410 of the bottom wall 41.
10 is thinner than the corners 411a and 411b.

The glass runs 4A and 4B are extruded in a cross-sectional shape in which the opening side of the main body 40 is expanded. The extruded glass runs 4A, 4B are connected in a substantially right angle at an L-shaped molding corner 4D having rounded corners. The corner portion 4D has the same cross-sectional shape as the extruded glass runs 4A and 4B (FIG. 1B). Similarly, the extruded glass run 4C is connected to the glass run 4A by a mold forming corner 4E that is gradually bent.

The glass run 4 is pinched from both sides in the direction indicated by the white arrow in FIG. 1B with fingers or the like to reduce the width, and as shown in FIG. 20. In this case, as shown by the broken line in FIG.
The top end 4 of the bottom wall 41 together with the corners 411a and 411b
10, the corners 411a, 411b when sandwiched between the side walls 42a, 42b until they are parallel to each other.
Is significantly smaller than that of a conventional glass run in which the bottom wall is not bent. In particular, by making the thickness of the top end 410 thinner than the corners 411a and 411b, the folding can be performed almost only by the top end 410 and the corners 411a and 41b.
The side walls 42a, 42a are hardly changed in the angle 1b.
b is parallel.

Accordingly, in the corner 4D which is bent at a right angle, the side wall 4
2a and 42b are on the outer diameter side of the corner, that is, the corners 411a and 411b connected to the bottom wall 41 and the inner diameter side of the corner,
That is, there is almost no relative change in the length in the direction along the bending direction between the front end side. Therefore, unlike the conventional glass run, there is no excess wall, so that it can be sandwiched with a light force, and the assembling to the channel portion 20 becomes easy. Further, both side walls 42a and 42b and a seal lip 43 integral therewith are provided.
a, 43b and the molding lips 44a, 44b do not bulge outward, so that the assembly to the channel portion 20 is further facilitated and the sealing lip 43
a, 43b are uniform over the entire length of the corner portion of the door glass, and the molding lips 43a, 4b
No opening occurs between the tip of 3b and the side wall of the channel portion 20 facing the tip.

The radius of curvature of the molded corner 4E (FIG. 3) is larger than that of the corner 4C.
Even if the side walls 42a and 42b are deformed so as to narrow the opening side at the time of assembling to the door frame, the above-mentioned excess does not become a problem as much as the corner portion 4C. 2 can be easily inserted.

Since the extruded glass runs 4A, 4B, 4C are linear, even if the side walls 42a, 42b are deformed so as to narrow the opening side, no excess is generated. However, by forming the bottom wall 41 in a mountain shape, the fitting to the door frame 2 becomes easy.

FIG. 2 shows a main part of another glass run of the present invention. The glass run 5 has a bottom wall 51 having a mountain-shaped cross section only at a mold forming corner portion 5D bent at a right angle, and the bottom wall 51 has a flat surface in other portions.

The extruded glass runs 5A and 5B connected by the molding corners 5D have a U-shaped cross section composed of a flat bottom wall 51 and opposing side walls 52a and 52b extending from both ends thereof. It has. 53a, 53
b is a seal lip, and 54a and 54b are molding lips.

The molding end 5D is connected to the glass runs 5A and 5B by extrusion.
The bottom wall 51 has the same cross-sectional shape as A and 5B, and is formed into a mountain-shaped cross-section in which the height gradually increases toward the center of bending of the corner portion 5D. The cross-sectional shape of the center of bending is shown in Figs. 1 (B) and 1 (C).
Is substantially the same as the previous embodiment shown in FIG.

Also in this glass run 5, when the mold forming corner portion 5D is assembled to the door frame 2, it is folded at the top end 510 of the bottom wall 51, and the glass run 4 described above is folded.
The same operation and effect as those of the molding corner portion 4D can be obtained.

[0025]

According to the present invention, the work of assembling the glass run to the door frame is facilitated. In particular, when a corner portion of the glass run bent at a substantially right angle is assembled to the corner portion of the door frame, it is possible to assemble the door frame with good close fitting properties without causing local swelling on the side surface portion.

[Brief description of the drawings]

FIG. 1 (A) is a perspective view of a main part of a door glass run of the present invention, and FIG. 1 (B) is a view of the door glass run before installation.
1A is a cross-sectional view taken along the line IB-IB, and FIG. 1C is a cross-sectional view taken along the line IB-IB in FIG.

FIG. 2 is a perspective view of a main part of another door glass run of the present invention.

FIG. 3 is a front view of an automobile door to which a door glass run is attached.

FIG. 4 is a sectional view of a conventional door glass run mounted along a line IV-IV in FIG. 3;

FIG. 5 is a cross-sectional view of a conventional door glass run before mounting.

FIG. 6 is a view showing a bulge generated when a conventional door glass run is attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door 2 Door frame 20 Channel part 3 Conventional door glass run 4,5 Door glass run of the present invention 4A, 4B, 4C, 5A, 5B Extruded glass run 4D, 4E, 5D Molded corner part 40, 50 Main body Part 41, 51 Bottom wall 410, 510 Top end 42a, 42b, 52a, 52b Side wall 43a, 43b, 53a. 53b Seal lip 44a, 44b, 54a, 54b Mold lip 6 Door glass

Claims (1)

(57) [Claims] 1. A door glass run mounted along a door frame (2) of a motor vehicle door, comprising a bottom wall (41).
And a channel portion on the inner periphery of the door frame (2) having a substantially U-shaped cross section composed of opposed side walls (42a, 42b).
(20) a main body (40) attached to the side walls;
A sealing lip (43a, 43b) extending from the tip of (42a, 42b) in the direction opposite to each other ;
molding lips (44a, 44 ) extending along the outer surface of b)
b) , both ends of the bottom wall (41) and side walls (42a,
42b) are connected to the corners (411a, 411b) where they are connected.
Each notch (45) is formed to form a corner (411a, 41).
Door glass run was extruded 1b) and thin (4A,
In the door glass run (4) in which the ends of 4B) are connected by molding to form corners (4D) , at least the bottom wall (41) of the molding corners (4D) protrudes outward. The top end (410) is formed in a chevron cross section forming a bending point, and the top end (410) is deeper than the notch (45).
A notch (46) is formed and the top end (410) is
An automobile door glass run characterized by being thinner than the corner portions (411a, 411b) .