JPS5845960Y2 - Molding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to moldings, and particularly to a terminal structure of moldings that improves adhesive strength to automobile panels and the like.

BACKGROUND ART In recent years, moldings for automobiles made by extruding synthetic resin, rubber, etc. and affixing them to automobile panels with double-sided adhesive tape are becoming popular.

In order to reliably attach automotive moldings using double-sided adhesive tape and to prevent them from peeling off over time, the surface of the panel must be cleaned and the temperature of the panel should be approximately 25°C to 40°C when pasting. It is necessary to keep the adhesive at room temperature and press it with appropriate force after pasting.

However, in practice, such ideal conditions are difficult to obtain in a normal manufacturing factory, and therefore there is a possibility that the molding will peel off from the body panel after being bonded to the automobile panel or during driving.

In particular, the front side of moldings obtained by extrusion shrinks over time due to the rapidly fluctuating weather conditions in the outside world compared to the car panel side, which causes the molding to warp, which causes the above-mentioned tendency to be more pronounced. Become.

That is, when warping occurs, minute peeling occurs at the end of the molding, but this minute peeling is rapidly accelerated by the warping of the molding.

Therefore, the purpose of the present invention is to enable strong adhesion of moldings, especially the ends, to automobile panels, etc., and to prevent peeling of the moldings from spreading throughout the moldings.
This will be explained in detail below using implementation sequences.

FIG. 1 is a bottom perspective view showing the molding according to the present invention, particularly the terminal structure, and FIG. 2 is a sectional view taken along line A-A.
In the figure, 1 is a long molding body, P
It is formed by extrusion molding VC etc., and the step part 2
The surface is covered with a decorative member 3 such as a metallized film, and a double-sided adhesive tape 4 is attached to the bottom surface.

5 is a terminal molded product that is a feature of the present application, one end is joined to the end of the molding main body 1, the other end is molded so as to become thinner toward the tip, and the inside is hollow and the bottom side is open. This opening is partitioned by ribs 6 and divided into four spaces 7.

In this embodiment, space 14 is surrounded by spaces 1□, 2, and 3.

To integrate the terminal molded product 5 and the molding main body 1, the terminal molded product 5 is injection molded, and at this time, the end of the molding 1 cut to a predetermined size is pushed into a part of the injection molding die and injection melted. The two may be integrated by being fused to the end of the molding when the resin hardens.

Alternatively, both may be formed in separate steps and bonded using an adhesive.

According to the molding with the above configuration, adhesive N is attached to each space T.
After injecting U 8, the molding can be adhered to the automobile panel 9 using the adhesive 8 and the double-sided adhesive tape 4.

Therefore, the molding will warp over time,
Even if a force in the peeling direction is applied to the end molded product 5, the end molded product 5 will not be peeled off due to the adhesive force of the cured adhesive 8, and no peeling phenomenon will occur as a whole.

In another embodiment of the present invention, if the adhesive is injected into only the central space 74 for bonding, even if too much adhesive is injected, when the molding is bonded, the adhesive will not be absorbed into the surrounding space. Since the adhesive flows into γ1t2t3, there is no problem of the adhesive spilling out to the outside and contaminating the outside.

Also, the bottom surface of the rib 6 is lowered by 1 than the bottom surface of the terminal molded product 5.
2 to prevent the rib 6 from coming into contact with the panel 9, inject adhesive into only the spaces 71, 72° γ3 and bond. Since the adhesive flows in and does not protrude to the outside, the same effect as in the above case can be obtained, and it also flows to the bottom of the terminal molded product 5, making it possible to increase the adhesive strength on the peripheral side compared to the central part.

Further, as a method of draining excess adhesive into the adjacent space, grooves or holes may be provided in the rib 6.

FIG. 3 is a sectional view showing another embodiment of the molding according to the present invention, and the same parts as in FIG. 1 are designated by the same reference numerals.

As shown in the figure, a portion 10 of the terminal molded product 5 covers the end surface of the molding 1, and the hollow portion 11 thereof is open on the panel 9 side and also on the end surface side of the molding 1.

Therefore, the adhesive 8 has the function of joining the terminal molded product 5 to the panel 9 and the molding 1.

Therefore, it is possible to achieve the same effects as in the above-mentioned embodiments and also to increase the adhesive strength between the molding 1 and the terminal molded product 5.

Here, in the present invention, the adhesive may be replaced with a pressure-sensitive adhesive.

Further, the terminal molded product 5 is not limited to the sharp shape shown in the figure, but may have other shapes.

As explained above, according to the present invention, an opening is provided at the bottom of the terminal molded product to be joined to the end of the molding, and adhesive or adhesive is injected into this opening to bond the terminal molded product to the material to be bonded. This allows the terminal molded product to not peel off even if the molding warps over time, making it possible to prevent the molding from peeling off and improve marketability.

In particular, by providing a cavity near the injection molding end of the end cap, the wall thickness of the end cap can be made constant, and the appearance of the end cap can be maintained by preventing sink marks from occurring on the surface of the end cap.

[Brief explanation of drawings]

1 and 2 are a bottom perspective view and a sectional view showing an embodiment of the molding according to the present invention, and FIG. 3 is a sectional view showing another embodiment of the molding according to the present invention. DESCRIPTION OF SYMBOLS 1... Molding body, 4... Double-sided adhesive tape, 5... Terminal e, shape, 6... Rib, 1... Space, 8... Adhesive, 9... Automobile panel .

Claims (6)

[Scope of utility model registration request] (1) A terminal molded product is provided at the end of the molding, an opening is provided at the bottom of this terminal molded product, and adhesive or adhesive is injected into this opening to bond the bottom of the terminal molded product to the material to be adhered. A molding characterized by: (2) The molding according to claim 1, wherein the molding has a double-sided adhesive tape on the bottom. (3) The terminal molded product is molded by injection,
The molding according to claim 1, wherein the terminal molded product is integrally attached to the end of the molding during this molding. (4) The molding according to claim 1, wherein the opening is divided into a plurality of spaces by ribs. (5) Registration of a utility model in which at least one divided space is almost entirely surrounded by another space, and an adhesive or pressure-sensitive adhesive is injected into the space between or the surrounding space. The molding according to claim 4. (6) The molding according to claim 4, which is a registered utility model, in which the rib is provided with grooves or holes that communicate the divided spaces.