JPS60229738A - Molding method of attachment of fence frame - Google Patents

Abstract

PURPOSE:To obviate the failure of attachment in continuously combining moldings by a method in which a OMEGA-shaped projection is provided on one end of the molding and a recession to be fitted on the projection is provided on the other end. CONSTITUTION:A OMEGA-shaped projection 4 without acute angles is provided on one end of a molding 1, and a recession 5 to be fitted on the projection 4 is provided on the other end. The projection 4 is fitted into the recession 5 of the next molding 1 of the same shape in a continuous manner to form a fence frame. No occurrence of apertures due to contraction with time of the boundary between the moldings 1 occurs, and therefore, such darwbacks as putting of objects in the apertures, staining of objects with dust deposited in the apertures, etc., can be obviated.

Description

[Detailed description of the invention] This invention improves the structure of a molded body for attaching to a tank frame,
The mounting characteristics have been improved. Specifically, it is made of rubber or thermoplastic plastic, has a rough surface with high surface friction resistance all over its outer periphery, and has a cross-sectional shape that is scalloped or circumferential with small openings, and It is an integral molded body for attaching to a short or long tank frame, which has an Ω-shaped convex portion at one end in the longitudinal direction and an Ω-shaped concave portion that fits into the convex portion at the other end. It has improved characteristics when consecutively mounted on the machine frame.

Now, the present applicant has developed a short to long circumferential material with a cross-section shaped like a casing or having a small opening, made of rubber or thermoplastic plastic, on which a rough surface with high surface friction resistance is formed on the entire outer periphery. Of the shaku molded products, those with a cross-section like a casing can be tightly attached to a square machine frame, and those with a one-circumference shape can be tightly attached to a circular fence rod. Compared to when the machine is suspended directly on the frame of an apartment, etc., it does not slip off due to wind, etc., and there is no need to attach any special holders to the suspended object to prevent it from slipping, so it is an effective molded structure for attaching the fence frame that can be used at all times. He has already filed a patent application as Japanese Patent Application No. 58-234636.

However, subsequent experiments showed that when multiple molded bodies were installed in succession in the longitudinal direction of the fence rod, gaps were created at the borders between each molded body due to aging of the molded bodies, causing gaps between the molded bodies such as night ridges and futons. In order to eliminate these drawbacks, some parts of the suspended object may get stuck in the gap, or dust may accumulate in the gap, damaging the aesthetics of the molded product and contaminating the suspended object. The experiment continued. The gaps that occur at the boundaries between the molded bodies due to oral contraction of the molded bodies are formed by integrating a convex portion with a wide tip at one end of each molded body and a concave portion of the same shape that fits into the convex portion at the other end. Established in

We have found that the problem can be solved by connecting the convex part of one molded body to the tank frame one after another by fitting the convex part of the next molded body into the same shaped concave part of the next molded body.

However, even with such a connection, depending on the shape of the convex part, it may be difficult to withstand the tensile stress that occurs when the molded product attached to the tank frame contracts, or whether the generated stress can be dispersed without being concentrated locally. The question remained as to whether it would be possible, and various considerations were made. As a result, the Ω-shaped convex portion of the integral molded body, which has an Ω-shaped convex portion without an acute angle at one end and a recessed portion that fits into the convex portion at the other end, was replaced with the Ω-shaped convex portion of the primary identically formed body. Through numerous experiments, we have confirmed that it is best to connect them one after another and attach them to the tank frame, such as by fitting them into the recesses.
The present invention has now been completed. In addition, in order to facilitate the above-mentioned fitting connection, the size of the same-shaped recess formed at the other end is slightly larger than the size of the Ω-shaped protrusion formed at one end of the molded body. It is desirable to leave it there. Also,
When a plurality of molded bodies of the present invention having such a structure are successively attached to a tank frame, an Ω-shaped convex portion or a concave portion of the same shape will be formed at the end of the machine frame, but the molded body of the present invention Since it is a soft material such as rubber or thermoplastic, the core can be easily cut and removed.

Hereinafter, one molded article of the present invention will be explained based on the drawings, and the parts indicated by the same reference numerals in each drawing are the same parts.

First, FIG. 1 is a schematic perspective view showing, as an example, a molded article made of the thermoplastic plastic of the present invention and consisting of a single material layer with a cross-section having a casing shape.

FIG. 2 is a schematic plan view of essential parts showing a connected state of one molded article of the present invention.

To explain the figures, 1 in Fig. 1 is a short molded body made of a thermoplastic plastic material and has a cross-section scalloped shape, IA.
2 is an acute-angled straight groove with high surface friction resistance formed on the entire outer periphery of the molded body; 2 is the upper bottom of the molded body; 3 and 3A;
is the sleeve of the molded body.

This is an Ω-shaped recess for matching. In the above description, the case of a short molded body made of a single material in the shape of a casing was explained as an example, but a composite layer may be used instead of a single layer.
-i elongated molded bodies may be used. Also in place of the kasugai formation form.

The molded body may be a short or long molded body whose r surface is circumferential. Fig. 2 shows a state in which the Ω-shaped convex portion 4 formed at one end of the molded body y in Fig. 1 is fitted with a concave portion 5 of the same shape formed at one end of another identical molded body y. This is a schematic plan view of the main parts shown. By fitting and connecting the molded bodies in this way, even if each molded body shrinks over time, gaps will be created between each molded body. There is no.

In addition, when each molded body contracts, tensile stress is released at the connecting and fitting parts, but since the connecting parts are Ω-shaped and have no acute angles, the stress is not concentrated locally. Can be dispersed and does not undergo stress fracture.

As described above, when the molded body of the present invention is attached to a fence frame, the same purpose as stated in the original application can be achieved. Form a recess that fits with the

Since the molded bodies are connected in the order of their convex portions and concave portions and are successively attached to the end frame, there is no gap between the molded bodies due to shrinkage over time, and this prevents the suspended object from filling the gap. Or something like that.

It is also possible to eliminate the drawback that the suspended object is contaminated by dust accumulated in the gap. Therefore, the present invention is considered to be an invention that provides a molded article that is extremely effective for this type of purpose.

4 Additional relations This invention is based on the original application, Patent Application No. 2346 filed in 1982.
Items essential to the structure of No. 36 molded bodies for mounting on frame frames are the main parts, and when multiple molded bodies are successively mounted on both frames, the adverse effects of the gaps that occur at the boundaries of each molded body. A Ω-shaped convex portion is formed at one end of each molded body, and a concave portion of the same shape is formed at the other end to fit with the convex portion, so that the molded bodies can be firmly fitted and mounted between the convex portion and the concave portion. , and has additional requirements.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing one example of the molded article of the present invention, and FIG.
The figure is a schematic plan view of main parts showing a state in which the molded bodies are connected to each other. 1... Molded body IA with a scalloped cross section... 4 rough outer peripheral surfaces of the molded body... Ω-shaped convex portion 5 at one end of the molded body Ω-shaped concave portion 1/ at the other end of the molded body

Claims (1)

[Claims] The entire outer periphery is made of a single layer or a composite layer made of rubber or thermoplastic plastic with a rough surface with high surface friction resistance, and the cross section is scalloped or circumferential with small openings. , and an Ω-shaped convex portion at one longitudinal end thereof, and an Ω-shaped concave portion fitable with the convex portion at the other end.