JPH0357739A - Connection of weatherstrip - Google Patents

Abstract

PURPOSE:To surely connect a molded member by continuously preparing a cover member which has a gate-shaped section and is joined with a weatherstrip and whose both leg edges are made thin, onto a part where the molded member is connected, through the extrusion molding, and tearing-removing the cover member after the surface treatment. CONSTITUTION:A cover member 4 is continuously formed integrally with the both edge parts 34 of a weatherstrip 3A in the longitudinal direction. The cover member 4 has a gate shape having a sectional surface in an inverted U-figure form, and the both leg edges are joined with the both edges in the width direction of the edge part 34. The leg part 41 is made thinner towards the top edge. A lubricity applying surface processing agent S is sprayed onto the door glass sliding surfaces of a seal lip 32 and a bottom surface 31 by a sprayer 5, onto the weatherstrip 3A onto which the cover member 4 is installed, and the spraying onto the edge surface 34 is prevented. After spraying, the cover member 4 is easily tearing-removed at the both leg edges, and a molded member is surely connected with the edge part 34 from which the surface processing agent S is removed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an extruded weatherstrip, and more particularly to a method for connecting a molding material to a surface-treated weatherstrip.

[Prior Art] When forming a corner portion of an automobile weather strip, the ends of the extrusion-molded weather strip are connected through a molded material shaped into a corner shape. .

For example, as shown in FIG. 1, a weather strip 3 is attached around the inner periphery of a window opening of an automobile door. FIG. 2 shows a connecting corner portion (section C in FIG. 1) between a vertical weather strip 3A along the door frame 1 and a horizontal weather strip 3B along the belt line of the door. The vertical weather strip 3A is of an extruded shape and has seal lips 32 facing each other at both ends of the opening of the main body having a U-shaped cross section, so as to sandwich the door glass 2 which moves up and down from the inside and outside.

The weather strip 3B extending in the lateral direction along the belt line consists of two strips, one on the inside of the vehicle and one on the outside of the vehicle, with respect to the door glass 2, and each seal lip sandwiches the door glass 2 from the inside and outside. These two weather strips are connected by a molding material 3C molded into a corner shape as shown in FIG. Note that FIG. 2 only shows the molding material on the inside of the vehicle, and omits the molding material on the outside of the vehicle. 33 is a seal lip of the molding material 3C.

By the way, in the extrusion-molded weather strip 3A, following extrusion, as shown in FIG. The surface is treated with urethane, oil-based silicone, etc. to impart lubricity. In this case, since the surface treatment agent S inevitably adheres to the edge portion 34 of the weather strip body to which the molding material 3C is connected, the molding material 3
The bonding of C tends to be incomplete.

Therefore, when extruding the weather strip 3C, as shown in FIG. Measures are taken to prevent the treatment agent S from scattering to the edge 34 (Japanese Patent Publication No. 58632/1983).

However, with this method, the lip 35 is thin and has poor shape stability, and is deformed during surface treatment as shown in FIG.

[Problems to be Solved by the Present Invention] The present invention has been made in view of the above-mentioned circumstances, and when surface treatment is applied to an extruded weather strip and then a molding material is connected, the molding The purpose is to prevent the surface treatment agent from scattering to the joints of the materials and to improve the bonding of the molded materials.

[Means for Solving the Problems] The present invention provides a cover member that has a gate-shaped cross section and has both leg ends joined to the weatherstrip with a thin wall to cover the part to which a molding material is to be connected when extruding the weatherstrip. The method is characterized in that the cover member is continuously shaped, then a surface treatment is performed, the cover member is torn off, and a molding material is connected to the removed portion.

[Operations and Effects] Since the cover member is supported by the weather strip at both leg ends, the shape is stable and the adhesion of the surface treatment agent to the portion covered by the cover member is reliably prevented. I can do it. The cover member can then be easily torn off from the leg end after surface treatment. Thus, the molding material can be connected to the extruded weatherstrip without any surface treatment agent adhering to it.

[Example] The vertical weather strip 3A for the door frame 1 shown in FIGS. 1 and 2 is made of resin or rubber,
Seal lips 3 extending from both ends of the U-shaped main body
2 and is manufactured by extrusion molding. 3 and 4 on both end edges 34 of this weather strip 3A.
As shown in the figure, the cover member 4 is continuously shaped.

The cover member 4 is made of the same material as the weather strip 3A, and has a gate-shaped cross section with an inverted U shape, and both leg ends meet the edge portions 34.
It is joined to both ends in the width direction. The leg portion 41 has a thinner wall in the distal direction, and the leg end can be easily torn off. This cover member 4 is formed by extrusion molding simultaneously from a die of an extruder in close proximity to both end edges 34, and after extrusion, is pressed into contact with the end edges 34 of the weather strip 3A, thereby being continuously formed.

The weather strip 3A to which the cover member 4 is attached in this manner is kept in a slightly open state as shown in FIG. Spray on glass sliding surfaces.

Thereafter, by pulling the cover member 4, the cover member 4 is torn from its both leg ends and continuously removed from the weather strip 3A.

The corner portion of the weather strip 3A thus obtained was set in a mold, and by injecting resin or rubber, the cover member was removed as shown in Figure 2. A molding material 3C connected to the edge portion 34 is formed.

Therefore, the cover member 4 can be formed simultaneously with the extrusion molding of the weather strip 3A, without requiring a separate process, and since the cover member 4 is supported by both legs 41, the shape It is stable and can reliably prevent the surface treatment agent S from adhering to the edge portion 34 during surface treatment, and can be easily torn off at both leg ends after surface treatment. Since the molding material 3C is bonded to the edge portion 34 to which no surface treatment agent S is attached, good bonding can be achieved without being affected by the surface treatment agent S.

Note that the number of legs 41 of the cover member 4 is not limited to two, but may be three.

[Brief explanation of drawings]

Fig. 1 is a front view of an automobile door equipped with a weather strip, Fig. 2 is a view showing the connection part of the weather strip (section C in Fig. 1) to which the present invention is applied, and Figs. 3 to 5 The figures show an embodiment of the present invention, and FIG. 3 is a diagram showing a state in which a weather strip is subjected to surface treatment, FIG. 4 is an enlarged view of the main part of the weather strip shown in FIG. 3, and FIG. The figure shows the state in which the cover member is torn and removed from the weather strip, Figures 6 to 8 show the conventional example, and Figure 6 shows the state in which the weather strip is subjected to surface treatment. , Fig. 7 and Fig. 8 are diagrams showing the adhesive for preventing scattering of the surface treatment agent formed on the weather strip. 3, 3A, 3B...Weather strip 3C...
...Mold forming material 4...Cover member S...Surface treatment agent shown in Fig. 1A Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Figure 8

Claims (1)

[Claims] When a part of the surface of an extruded weatherstrip is subjected to continuous surface treatment in the longitudinal direction and the molding material is connected at a position along the side edge of the surface-treated part, the above-mentioned conditions are applied during extrusion of the weatherstrip. A cover member with a gate-shaped cross section and thin leg ends joined to the weather strip is continuously formed along the side edge, and then the above surface treatment is applied, and after the surface treatment, the cover member is removed from the weather strip. A method for connecting a weather strip, characterized in that the leg ends are torn and removed, and a molding material is connected to the removed portion of the cover member.