JPH08300948A - Grass run - Google Patents

Abstract

(57) [Summary] [Purpose] An object of the present invention is to provide a glass run in which a gap between a door glass and an outer lip is prevented from being generated at a corner portion so as not to impair sealing performance. [Structure] A flash surf-ace type in which a hollow seal portion 6 having an outer lip 5 hanging downwards is provided on the upper end of a base portion 4 in the vertical direction, and a seal lip 8 is provided on the lower end of the base portion 4. In the grass run 1, the outer peripheral edge portion 2 of the molded corner portion 2 of the grass run 1
Center point 9a of the corner of the centering slit 9 opened in a
In addition, the slits 10 are formed to protrude in the outdoor direction so as to form a substantially T-shape, or the slits 10 and 10 are formed to protrude in the outdoor direction on both sides of the corner center point 9a. It is formed as follows. Further, the cross-sectional shape of the outdoor-side corner portion 7a of the hollow portion 7 inside the hollow seal portion 6 is formed in a non-acute angle shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile flash surf-ace type glass run, and more particularly to a structure of a molded corner portion thereof.

[0002]

2. Description of the Related Art A grass run of this type is mounted on a sash of a portion of a door frame F of an automobile as shown in FIG. 9, and a hollow seal portion 12 having an outer lip 11 depending on the upper end is attached as shown in FIGS. And a seal lip 13 is provided at the lower end. Further, in the corner portion C formed by molding, as shown in the AA arrow view in FIG. 11, that is, in FIG. 10, a centering slit S is formed in the outer peripheral edge portion C ₁ . The outer lip 11 at the portion along the corner center line L shown in FIG. 10 forms a gap between the outer lip 11 and the door glass G that is raised at the time of closing due to the slack in the circumferential length of the inner peripheral edge portion 11a. As a countermeasure against this, as shown in FIG. 12, a groove portion 14 is formed in an inverted U-shape at the base portion of the outer lip 11 so that the raised door glass G fits in the groove portion 14 without a gap as shown in FIG.

[0003]

However, when the groove portion 14 is formed in an inverted U shape as described above, the cross-sectional shape of the outdoor side corner portion 15a of the hollow portion 15 of the hollow seal portion 12 becomes an acute angle. Since it is formed, the core corresponding thereto is also formed in an acute angle shape, and as a result, the mold is worn when used for a long period of time and the outdoor side corner portion 15a of the hollow portion 15 cannot be maintained in an acute angle shape,
The groove 14 is not formed in an inverted U shape, and a gap is generated between the door glass G and the outer lip 11, which causes a problem in sealing performance. For that reason, it has been necessary to build up the shape of the core or to remake the core. In view of such conventional problems, it is an object of the present invention to provide a glass run in which a gap between a door glass and an outer lip is prevented from being generated in a corner portion so as not to impair sealing performance.

[0004]

In order to achieve the above-mentioned object, the structure of the present invention is, as shown in FIGS. In a flash surf-ace type glass run 1 having a hollow seal portion 6 protruding from the base portion 4 and a seal lip 8 protruding from the lower end of the base portion 4, an outer peripheral edge 2a of the molded corner portion 2 of the glass run 1 is formed. At the center point 9a of the corner portion of the slit 9 for hollowing out the core, the slit 10 is formed so as to project in the outdoor direction so as to form a substantially T-shape,
Alternatively, the slits 10 and 10 are formed on both sides of the corner center point 9a so as to protrude in the outdoor direction so as to form a substantially U-shape. Further, the cross-sectional shape of the outdoor-side corner portion 7a of the hollow portion 7 inside the hollow seal portion 6 is formed in a non-acute angle shape.

[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 flash surf-ace type glass run, which is mounted on a sash of a portion of an automobile door frame F shown in FIG. 7 and is connected with extrusion molding portions 3 and 3 at both ends of a molded corner portion 2. are doing. As shown in FIG. 3, in the glass run 1, a hollow seal portion 6 having an outer lip 5 depending on the outside is projected from the upper end of a base portion 4 in the vertical direction, and a seal lip 8 is protruded from the lower end of the base portion 4. are doing. On the back surface of the base portion 4, there is formed an engagement projection 4a which is fitted into the sash.

Further, the corner portion 2 is shown in FIG.
As shown in the A-A arrow view, a centering centering slit 9 is opened in the outer peripheral side edge portion 2a, and from the intersection point of the centering centering slit 9 and the corner center line L, that is, the corner center point 9a, in the outdoor direction. A short slit 10 is formed so as to project toward and has a substantially T-shape. The slit 10 is shown in FIG. 3 which is a sectional view taken along the corner center line L of FIG. 1, and the centering slit 9 is a sectional view taken along the line BB of FIG.
Is shown in. As is apparent from FIGS. 3 and 4, the shape of the hollow seal portion 6 having the outer lip 5 hanging down is such that the cross-sectional shape of the outdoor-side corner portion 7a of the hollow portion 7 is formed in a non-acute angle shape unlike the conventional one. .

When the door glass G is closed and raised as shown in FIG. 5 and pressed against the hollow seal portion 6,
Since the contact portion 6a is largely deformed and acts so as to pull the outer lip 5 toward the indoor side, the outer lip 5 strongly adheres to the door glass G and the sealing property is improved. At this time, the outer lip 5 moves as shown by the arrow as shown in FIG. 6, and the stress concentrates particularly in the area E shown by the arrow as shown in FIG. When the outer lip 5 is deformed, the inner peripheral edge portion 5
The peripheral length d in the vicinity of the corner center line L of a does not contract due to the stress concentration in the vicinity of the above-mentioned point p, resulting in a slack,
Therefore, the door glass G cannot be touched and a gap is likely to be formed.

Therefore, by forming a slit 10 in a T-shape in the centering slit 9 of the outer peripheral side edge portion 2a shown in FIG. 2, the stress concentration near the point p is weakened.
Corner center line L of the inner peripheral edge portion 5a as described above
There is no slack in the peripheral length d in the vicinity. Further, since the center core removing slit 9 is formed in a T shape, the holding area of the center core holding portion is increased, the wobbling of the center core is reduced during use, and the center core is worn due to movement and pressure of raw material. This has the effect of reducing the bend. As another embodiment, as shown in FIG. 8, each of them is directed toward the outside in a position separated by a predetermined dimension on both sides of a corner center point 9a of a centering slit 9 formed in an outer peripheral edge 2a of the corner 2. The short slits 10 and 10 are projected so as to form a substantially U-shape. Also in this embodiment, the same effect as the embodiment in which the centering slit 9 is formed in a T shape can be exhibited. Further, the base portion 4 is plate-shaped, but as another embodiment of this portion, the same applies to a case where the base portion 4 is not plate-shaped but is sandwiched by a flange protruding from the body panel. .

[0009]

As described above, according to the glass run of the present invention, the slit is projected toward the outdoor direction at the corner center point of the centering slit formed in the outer peripheral edge of the molded corner section. The door glass is different from the conventional one because it is formed into a substantially T shape, or is formed so that slits are formed on both sides of the center point of the corner so as to project in the outdoor direction. During closing, stress does not concentrate near the center point of the corner of the centering slit, and the slack of the inner peripheral edge of the outer lip does not impair the sealing performance. Further, since the center core does not have to be formed into an acute angle, the maintenance cost due to wear of the mold becomes unnecessary, and the center core removing slit has a substantially T-shape.
Since it is formed in a character shape or a substantially U shape, the operability for core removal is also improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a grass run of the present invention.

FIG. 2 is an A-A view of the same as above.

3 is a sectional view taken along a corner center line L of FIG.

FIG. 4 is a sectional view taken along line BB of FIG. 1;

5 is a cross-sectional view showing a state when the door glass in FIG. 3 is closed.

FIG. 6 is a perspective view illustrating a deformed state of the glass run of the present invention when the door glass is closed.

FIG. 7 is a sectional view taken along the corner center line L of the above.

FIG. 8 is a view corresponding to AA view in FIG. 1 in another embodiment.

FIG. 9 is a side view of the automobile.

FIG. 10 is a perspective view of a conventional grass run.

FIG. 11 is an AA view of the above.

12 is a sectional view taken along the corner center line L of FIG.

13 is a cross-sectional view taken along the line DD of FIG.

FIG. 14 is a cross-sectional view showing a state when the door glass in FIG. 12 is closed.

[Explanation of symbols]

 1 glass run 2 corner part 2a outer peripheral side edge 3 extrusion molding part 4 base part 5 outer lip 6 hollow seal part 7 hollow part 7a outdoor corner 8 seal lip 9 center core slit 9a corner center point 10 stress distribution slit G door glass L corner center line

Claims (2)

[Claims] 1. A flash surf-ace type glass run in which a hollow seal portion having an outer lip hanging from the outdoor side is projected from the upper end of the vertical base portion, and a seal lip is projected from the lower end of the base portion. The glass run is formed so as to have a substantially T-shape by projecting the slit toward the outdoor direction at the center of the corner of the centering slit formed in the outer peripheral edge of the molded corner of the glass run, or A glass run, characterized in that slits are formed on both sides of the center point of the corner portion so as to project in the outdoor direction, respectively, and have a substantially U-shape. 2. The glass run according to claim 1, wherein a cross-sectional shape of the outdoor-side corner portion of the hollow portion inside the hollow seal portion is formed in a non-acute angle shape.