JPH04368225A - Automotive door glass run - Google Patents

Abstract

PURPOSE:To improve the safety of attachment to the door frame of a molded part, and provide better attachment work, in a door glass run which is attached along a door frame and Mere an extruded material is jointed with the molded part and comers are formed from the molded part. CONSTITUTION:At a molded part 5D, there are fanned angle engagement protrusions 53a, 53b with the same overhanging portion as engagement lips 52a, 52b which are formed from extruded materials 5A, 5B and engages with a door frame 1, and a lightening part 57 is formed inside the engagement protrusion 53a with at least a larger overhanging portion of the engagement protrusions 53a, 53b to give deformation to the engagement protrusion 53a.

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 on a door frame of an automobile door.

0002

2. Description of the Related Art As shown in FIG. 3, an automobile door frame 1 has a door glass run (hereinafter referred to as
(referred to as a glass run) 5 is attached. The glass run 5 includes extruded materials 5A, 5B, and 5C at a corner C1,
At C2, they are connected by corner-shaped molded parts 5D and 5E, and are configured in series. As shown in FIG. 4 (showing part C1 in FIG. 3), the glass run 5 has an approximately U-shaped cross section, and the glass run 5 has a U-shaped cross section formed on the inner circumferential side of the door frame 1 (FIG. 3). is fitted into a retainer (not shown).

[0003] On both sides of the extruded molded materials 5A, 5B, and 5C, engagement lips 52, which engage with the retainers to prevent them from coming off, extend diagonally outward. The engaging lip 52 is integrally extruded with the extruded materials 5A, 5B, and 5C. Engagement protrusions 53 are also formed in the molded parts 5D and 5E at portions that are continuous with the engagement lip 52.

[0004] Formation of the molded part connecting the extruded material is as follows:
Taking the mold forming section 5D shown in FIG. 4 as a representative, extrusion molding materials 5A and 5B are set in a mold so that their ends face both ends of the mold cavity, and the molding material is injected into the cavity. This is done by In this case, since it is difficult to form a lip like the above-mentioned engaging lip 52 extending in the direction of undercut in the molded part 5D, it is difficult to form a lip such as the above-mentioned engaging lip 52 that extends in the direction of the undercut. The engagement protrusion 5 has a shape that presses the end 521 of the engagement lip 52 and extends the pressed end 521.
3 (Utility Model Application No. 2-20725).

[0005]

[Problems to be Solved by the Invention] However, in the molding parts 5D and 5E of the conventional glass run as described above, since the engagement projections 53 are low, the engagement with the retainer is insufficient, and the door glass 2 is When opening and closing the door glass 2, when the door glass 2 exits the molding parts 5D, 5E and enters therein, the molding parts 5D, 5E move along with the door glass 2, and may shift relative to the retainer. Furthermore, there is a problem in that it is difficult to accurately position the retainer during assembly.

[0006]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a glass run which does not cause the above-mentioned deviation in the molded part and which is easy to assemble and position.

[0007]

[Means for Solving the Problems] The glass run of the present invention has
As illustrated in FIG. 1, chevron-shaped engagement protrusions 53a, 53b having a common slope with the outer surface of the engagement lips 52a, 52b of the extrusion molded materials 5A, 5B are extruded on the side surface of the molding knob 5D. The engaging projections 53 are formed in series with the engaging lips 52a and 52b of the materials 5A and 5B, and the engaging projections 53 are formed on the inner surface of the molded part 5D.
A feature is that a hollowed out portion 57 is formed at a position corresponding to a.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a portion of a glass run that is attached to the upper rear end corner of a door frame (section C1 in FIG. 3).

The extruded materials 5A and 5B are connected by a corner-shaped molded part 5D, and include a U-shaped main body 51 with a substantially uniform cross-sectional shape over the entire length and seal lips 56 extending in opposite directions from both ends of the main body 51. It is equipped with Further, the extruded molded materials 5A and 5B each include engagement lips 52a and 52b extending obliquely outward from both side surfaces. The glass run 5 is fitted into a retainer 3 formed on the inner periphery of the door frame 1, as shown in FIG. Of the engaging lips 52a, 52b, the engaging lip 52a on the inside of the vehicle has a longer shape.

FIG. 1(A) and FIG. 1(C) (FIG. 1(A)
As shown in the cross-sectional view taken along the line C-C of FIG. is formed. Also, on the outside side of the molding part 5D,
An engaging protrusion 53b is formed to connect the ends of the engaging lips 52b of the extruded molded materials 5A, 5B.

Each of the engaging protrusions 53a and 53b has a chevron-shaped cross-section having an inclined surface common to the outer surface of the engaging lips 52a and 52b. However, at the connection part between the engagement lip 52a and the engagement protrusion 53a, and the connection part between the engagement lip 52b and the engagement protrusion 53b, when molding the molded part 5D with a mold, the injection molding material is In order to prevent leakage to the extruded molded materials 5A and 5B, the engaging lips 52a and 52b are
is pressed against the side surface of the main body portion 51 to form a crushed shape.

Furthermore, as shown in FIG. 1(C), in the molded part 5D, a hollowed out part 57 is formed on the inner surface side where the engagement protrusion 53a with the larger protrusion is formed. 53a is thin.

[0013]The glass run of the above embodiment has the engaging lips 52a of the extrusion molded materials 5A and 5B in the molding part 5D,
Engagement protrusions 5 each having the same protruding shape as 52b
3a and 53b, the holding force of the molded part 5D to the retainer 3 is improved, no displacement occurs when the door glass is opened and closed, and it is possible to securely position the molded part 5D when assembled to the retainer 3. In addition, the engaging protrusion 53a has a hollowed out part 57 formed on the inside to make it easy to deform inward like the engaging lip 52a, so it is easy to fit the molded part 5D into the retainer 3. It has good assemblability.

Note that in this embodiment, the engagement protrusion 53
b has less protrusion than the engagement protrusion 53a and has less influence on the ease of assembling the glass run, so it is not made thin, but of course it can also be made thin by providing a cutout on the engagement protrusion 53b side. good.

FIG. 2 shows a portion of the glass run that is attached to the front end corner portion of the door frame (section C2 in FIG. 3).

[0016] An engagement lip 52a formed on the inner side surface of the extrusion molded material 5A is provided on the inner side surface of the molded part 5E.
An engaging protrusion 54a is formed in the extending direction. The engagement protrusion 54a has a chevron-shaped cross-section having a common slope with the outer surface of the engagement lip 52a. An engagement protrusion (not shown) having a chevron-shaped cross section is formed on the outer side surface of the molded portion 5E in the extending direction of the engagement lip 52b. Engagement protrusion 5
A hollowed out part (not shown) similar to the hollowed out part 57 shown in FIG. 1(C) is formed on the inner surface side of 4a. In the molding part 5E of this embodiment, the engaging protrusions 55a on both sides on the side connected to the extrusion molded material 5C (the figure shows only one side)
are the engagement lips 52a, 5 of the extruded material 5C as in the conventional case.
It has a low shape that is an extension of the crushed shape of 2b.

[0017]This embodiment also provides the same effects as the previous embodiment. In this embodiment, only the engagement protrusion on the side of the extrusion molded material 5A (attached to the upper horizontal portion of the door frame 1) is enlarged. Since the holding force of the door glass run to the retainer when the door glass is raised and lowered is mainly required on the horizontal side, sufficient holding force is exerted in this embodiment as well.

[0018]

[Effects of the Invention] In the glass run of the present invention, the retainer can be stably held at the corner portion of the molding, and there is no misalignment when the door glass is raised or lowered, and the installation work and positioning for the retainer is easy. It becomes easier.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the entire corner portion of a first embodiment of the door glass run of the present invention and its essential parts.

FIG. 2 is a view showing a corner portion of a second embodiment of the door glass run of the present invention.

FIG. 3 is a front view of a door with a door glass run attached thereto.

FIG. 4 is a diagram showing a corner portion of a conventional door glass run.

[Explanation of symbols]

1 Door frame 2 Door glass 3 Retainer 5 Door glass run 5A, 5B, 5C Extrusion molded material 5D, 5E Mold forming part 52, 52a, 52b Engagement lip 53, 53a, 53b, 54a, 55a Engagement protrusion 5
7 Lightening section

Claims (1)

[Claims] Claim 1: A door glass run fitted to a retainer formed along the inner periphery of a door frame of an automobile, comprising an extrusion molded material connected by a corner-shaped molded part, the extrusion molded material In the door glass run, the door glass run has an engaging lip that extends obliquely outward from the side surface of the mold and engages with the retainer part, and the side surface of the molded part has a chevron-shaped engaging lip that has a common slope with the outer surface of the engaging lip. A door glass run for an automobile, characterized in that a mating protrusion is formed in series with the engaging lip, and a hollowed part is formed on the inner surface of the molded part at a position corresponding to the engaging protrusion.