JPH04151330A - Weather strip for car - Google Patents

Abstract

PURPOSE:To form a die forming portion of an weather strip of one unit of core and secure it with clip at the die forming portion by positioning a core removing slit of the die forming portion at the underside of either one of the sides of a hollow seal portion of the die forming portion and providing a clip mounting hole at a mounting base of the die forming portion. CONSTITUTION:An extrusion molding member 3B of an weather strip mounted at the rear side vertical portion of a door frame 2 and an extrusion molding member 3C mounted at the outer periphery of a door body 1 are connected to each other at a die molding portion 4C. These members 3B and 3C are provided with a mounting base 31 and a hollow seal portion 32. The interior of the hollow seal portion 32 is separated by a partition 33 and a lip 34 is protruded from the center of the seal on the vehicle interior side. In this case, a core removing slit 5 is opened at the underside of the lip 34 of the hollow seal portion 32 of the die molding 4C along the edge of the mounting base 31. Then a clip mounting hole 6 is drilled through at the bottom of the mounting base 31.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a weather strip for an automobile, and particularly to the structure of a molded portion thereof.

[Prior Art] Taking an automobile door as an example, as shown in FIG. 3, a weather strip W is attached in series along the outer periphery of the door body 1 and the door frame 2.

The weather strip W is made of extruded members 3A and 3B.
, 3C are connected by molded parts 4A, 4B, and 4C.

Fig. 4 shows the connection part of the molding (part A in Fig. 3), and the extruded members 3B and 3C are made of sponge rubber and consist of a mounting base 31 and a hollow seal part 32. They are connected at the molded part 4C of the comb (Japanese Patent Laid-Open No. 58-205749).

Connection is generally made by molding, in which the ends of the extrusion molding members 3B and 3C are set at both ends of a mold cavity, a core is provided in the cavity, and molding material is injected into the cavity to connect the two ends. Part 4C is molded, and the core is removed after molding. Therefore, the core removal slit 5 remains in the molded part 4C. The core removal slit 5 is generally located at the bottom surface of the mounting base 31 of the molded part 4C because it does not appear externally when the weather strip is attached and does not affect the sealing performance.

The weather strip W is attached by fitting the extruded member 3B on the door frame 2 side into a retainer formed on the inner periphery of the door frame 2, and fixing the extruded member 3C on the door body 1 side to the door panel with a clip. . In FIG. 4, 6 is a clip attachment hole.

By the way, in order to improve the mounting stability of the weather strip W, it is desirable to clip the molded part 4C as well. However, as shown in FIG. 4, if the core removal slit 5 is present over almost the entire length of the bottom surface of the molded part 4C, clipping cannot be achieved.

Therefore, by extracting two cores during molding, the core extraction slit is divided into slits 5a and 5b as shown in FIG. 5, and a clip attachment hole 6 is formed between them. As shown in FIG. 6, the molded part 4C is fixed to the door panel 11 of the door body using the clip attachment hole 6 with a clip 7.

However, in this case, molding operations such as installing and extracting the core become complicated.

[Problems to be Solved by the Invention] The present invention has been made with the object of providing a weather strip whose molded part can be molded with a single core and which can be clipped to the molded part. It is.

[Means for Solving the Problems] The present invention provides a weather strip consisting of a mounting base and a hollow seal, in which a core removal slit in a molded part is
It is characterized in that it is located at the lower part of one side of the hollow seal part of the molding part, and a clip attachment hole is provided in the mounting base of the molding part.

[Operations and Effects] In the molding part, the core removal slit is located at the lower side of the hollow seal part, so that it can be clipped at the mounting base. Furthermore, due to its position, the core slit does not appear on the outside and does not affect the sealing performance.

Also, since there is no need to divide the core removal slit, 1
The molded part can be formed using individual cores.

[Example] In the embodiment shown in FIGS. 1 and 2, an extruded weather strip member 3B attached to the rear vertical part of the door frame 2 (FIG. 3) and a door body 1 (FIG. 3) are provided. ) is connected to the extrusion molded member 3C attached to the outer periphery of the molded part 4C through a molded part 4C.

The molded members 3B and 3C for double-pressing are provided with a mounting base 31 and a hollow seal portion 32, and the hollow seal portion 32 is partitioned from the inside by a partition wall 33 at its root side. A lip 34 protrudes from the center of the side surface facing inside the vehicle when the weather strip is attached.

Both ends of the molded part 4C have substantially the same cross-sectional shape as the end of the extrusion molded member 3B and the end of the extrusion molded member 3C, respectively. The entire molded part 4C has a single hollow shape, and no partition wall is formed. A core extraction slit 5 is provided along the edge of the mounting base 31 at the lower part of one side surface of the hollow seal portion 32 of the molded portion 4C, that is, the side surface on the lip 34 side.
is open. A clip attachment hole 6 passes through the bottom surface of the attachment base 31.

To connect the extrusion molded members 3B and 3C in the molding part 4C, the head of a cylindrical core (not shown) having the same cross-sectional shape as the inner surface of the hollow seal part 32 of the molding part 4C is used. The ends of the molding members 3B and 3C for both pressing are pushed into the mold cavity and set in the mold cavity. In this case, the location from which the core is removed is set to be at the bottom of one side of the hollow seal portion. A pin for forming the clip attachment hole 6 is provided protruding from the cavity. Then, molding material is injected into the cavity, and after molding, the core is removed.

In the molded part of the weatherstrip of the present invention, the core slit is located at the lower side of the hollow seal part, so that the weatherstrip can be clipped at the mounting base.

Furthermore, there is no need to divide the core extraction slit, and molding can be performed using a single core.

Since the core slit does not appear on the outside, it does not detract from the appearance and does not affect sealing performance.

[Brief explanation of drawings]

1 and 2 show an embodiment of the present invention, FIG. 1 is a perspective view showing the main parts of the weather strip connected at the molding part, and FIG. 2 is a - ■A sectional view of the weatherstrip installed along the line; Figure 3 is a front view of a car door with the weatherstrip installed; Figure 4 is a perspective view of part A in Figure 4 of a conventional weatherstrip; FIG. 5 is a perspective view of the above-mentioned section A of another conventional weather strip, and FIG. 6 is a perspective view of the other conventional weather strip shown in FIG.
It is a sectional view of an attached state at a position along line VI. 1... Door body 2... Door frame W... Weather strip 3A, 3B, 3C... Weather strip extrusion molded member 31...・Mounting base 32...Hollow seal parts 4A, 4B, 4C...Mold forming part 5...
Core removal slit 6... Clip attachment hole 7... Clip Figure 1 Figure 2 $4 Figure 5 Figure 6

Claims (1)

[Claims] In a weatherstrip consisting of a mounting base and a hollow seal part, the core extraction slit of the molded part of the weatherstrip is located at the bottom of one side of the hollow seal part of the molded part, and An automobile weather strip characterized by having a clip mounting hole in the mounting base.