JPH0415466Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a low-foam synthetic resin molded article that can be securely fastened with screws.

Prior art A low-foam synthetic resin molded body is called synthetic wood.
It is often used as a structural and interior material as an alternative to wood. In particular, it has excellent water resistance and corrosion resistance, so it is used as a building material used around plumbing, such as doors, door frames, and window frames for kitchens, washrooms, bathrooms, etc.

Doors made of this wood were fixed to the door frame using hinges and screws.

Problems to be solved Low-foaming synthetic resin moldings can be fixed with nails or screws, and there is no problem in places where there is little movement. When it is fixed so that it can be opened and closed, it has the disadvantage that force is applied to the nails and screws each time it is opened and closed, causing the nails and screws to loosen, and it is necessary to retighten them more frequently than with wood. Another disadvantage is that if it is retightened too frequently, it loses its holding power and cannot be fixed.

Solution The inventor of the present invention has created a member with almost no loosening when screwing, by embedding and fixing the synthetic resin sleeve used when screwing onto concrete etc. into a low-foaming synthetic resin molded body using an adhesive. He invented it.

This will be explained in detail below.

1 is a low-foaming synthetic resin molded article, which may or may not have a high-density portion in its surface layer. Sleeve 2
A hole 3 that is slightly smaller than the outer diameter is made, the sleeve 2 is inserted into this hole 3, and the sleeve 2 is fixed with adhesive.

There are no particular restrictions on the material of the sleeve 2, but it may be fixed with the same adhesive as the low-foaming synthetic molded product 1.
Preferably made of synthetic resin.

The outer surface 5 of the sleeve 2 may be flat, but in order to bring it into closer contact with the low-foaming synthetic resin molding,
It may have unevenness, but preferably has a groove shape for easy insertion.

The inner surface 6 is preferably not flat but has an uneven surface in order to facilitate the screwing of the screw 4 and improve the threading depth. It is preferable that near the center there be a portion that protrudes inward to the extent that the screw thread is applied, and that there are scattered spaces on the outside where the portion pushed out by the screw thread can escape in order to insert the screw. Various sleeves of this kind are commercially available for use with concrete, and can be used in the present invention. The adhesive may be an adhesive capable of adhesively fixing the low-foaming synthetic resin molded body and the sleeve.
If you use instant adhesive, you can screw the sleeve immediately after fixing it.

Furthermore, if a solvent type (dope cement type) is used, it will take some time to harden, but more reliable fixation can be achieved.

Even if the sleeve 2 is simply inserted into a low-foaming synthetic resin molded body without using an adhesive, it can be used for a short period of time. However, over time, loosening occurs between the low-foam synthetic resin molded body and the sleeve, resulting in insufficient fixation. Considering the cause of this, the surface layer of synthetic wood is usually high density, but the inner layer is quite foamy and only has a thin cell membrane, so when force is applied to the sleeve, it cannot withstand the pressing force and the hole gradually forms. It seems like it will get bigger. Therefore, since synthetic resin thin films undergo large deformations due to pressure but are relatively resistant to deformation due to tension, we decided to utilize this tensile force.

In other words, by adhesively fixing the sleeve into the low-foaming synthetic resin cell membrane, it is fixed in all directions, like a bicycle spoke, and even if it is fixed with a thin cell membrane, it is strong and will not loosen over time. It is considered that

When using the low foaming synthetic resin molded article of the present invention, screws can be prevented from loosening due to opening and closing when a hinge or the like is used to fix the low foaming synthetic resin moldings between the low foaming synthetic resin moldings or between the low foaming synthetic resin and wood so that they can be opened and closed. can.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a sleeve fixed to a low-foaming synthetic resin molded body. FIG. 2 shows a perspective view of the sleeve. DESCRIPTION OF SYMBOLS 1...Low foaming synthetic resin molded body, 2...Sleeve, 3...Hole, 4...Screw nail, 5...Sleeve outer surface, 6...Sleeve inner surface.

Claims (1)

[Scope of utility model registration request] The sleeve is characterized in that a synthetic resin sleeve is embedded and fixed in the main body of a low-foaming synthetic resin molded product with the cell membrane of the molded product and the outer surface of the sleeve bonded with an adhesive. Low foaming synthetic resin molded body.