JPS6131524Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a structure for fastening a plurality of members using screws.

The conventional structure described above, as shown in FIG.
Pass the tip of the head screw 1 through the spring washer 2 and the screw hole 31 of the mounting member 3, and then insert the tip of the head screw ₁ into the screw hole 41 of the mounting member _4.
The head screw 1 is turned and tightened against the elasticity of the spring washer 2 to deform the spring washer 2, and the elastic force for restoration causes the mounting member mounting member 3,
4 is fixed as shown in FIG. The conventional structure described above not only requires an extra part called the spring washer 2, but also requires space because the washer 2 protrudes outside the mounting member 3 and the height of the head of the head screw 1 becomes high. Not only is this disadvantageous, but it also has the disadvantage of poor appearance. Although not shown, there is a structure in which the teeth of the toothed washer are bitten into the mounting member when screwing in the screw using a toothed washer, but in that structure, the mounting member is forced into the teeth. There were drawbacks such as rust forming on the surface of the product.
In addition, as a structure for fastening members with screws without using spring washers, toothed washers, etc., as shown in the example shown in Fig. 3, the tip of the head screw 1 is directly connected to the mounting member 3 without passing it through a washer, etc. Mounting member 4 through screw hole 3 ₁
In some cases, the head of the head screw ₁ and the surface of the mounting member 3 are fixed with adhesive 5.
There was a drawback that the recessed hole in the upper surface of the head was filled with the adhesive 5, making it impossible to perform the subsequent unfastening operation. Furthermore, although not shown, adhesive is sometimes applied to the threaded surface just before screwing the head screw 1 into the screw hole ₄₁ of the mounting member 4, but this has the disadvantage that it is completely impossible to unfasten the screw. .

The present invention eliminates the above-mentioned drawbacks, makes it possible to securely fasten members using screws, and easily release them, and also makes it easy to determine the perpendicularity and position of the head screws that are screwed in during installation. The purpose of this invention is to provide a screw fastening structure that can be used.

An embodiment of the present invention will be described based on the drawings. In FIG. 4, a head screw 1, an arbitrary mounting member 3 having a screw hole ₃₁ , a television having a recess made of a hard elastic material such as metal and having a screw hole ₇₁ at the bottom;
It consists of a mounting member 7 such as a radio chassis,
As shown in FIG. 5, pass the tip of the head screw 1 through the screw hole ₃₁ of the mounting member 3, insert it into the screw hole ₇₁ drilled at the bottom of the recess of the mounting member 7, and tighten it to close the recess. The cross section is curved as shown by the dotted line, and due to the elastic force of the curved portion, the mounting member 3,
Fix 7 without loosening. At this time, an annular protrusion 72 having a U-shaped cross section is formed on the periphery of the screw hole ₇₁ of the mounting member ₇ , and the upper surface of this annular protrusion ₇₂ is in surface contact with the lower surface of the mounting member 3. The portion does not come into contact with the lower surface of the mounting member 3, resulting in an empty space. Therefore, heat from heat-generating components, etc., that is transmitted to the chassis of televisions, radios, etc. is difficult to be transmitted, and furthermore, when an impact is applied to the chassis due to an external factor, the impact is difficult to be transmitted to the mounting member 3. .

This annular protrusion ₇₂ also has a positioning function during screw fastening, so that the position and perpendicularity of the screw hole can be accurately determined during the fastening operation.

The attachment members 3 and 7 in the fixed state can be easily released by rotating the head screw in the opposite direction.

As mentioned above, according to the present invention, it is not only possible to securely fix multiple mounting members without using extra parts such as spring washers, toothed washers, or adhesives, but also to release the fixation extremely easily. can.

[Brief explanation of the drawing]

Figures 1 to 3 relate to examples of conventional screw fastening structures; Figure 1 is an exploded perspective view of parts using spring washers, and Figure 2 shows a fastened state using the parts of Figure 1. Figure 3 is a side view of the main part, partially shown in cross section, and Figure 3 is a side view of the main part, partially shown in cross section, showing the state where the head of the screw and the surface of the mounting member are fixed with adhesive. 4 and 5 relate to an embodiment of the present invention, in which FIG. 4 is a perspective view of a main part of a mounting member having a screw hole, and FIG. 5 is a sectional view of a main part in a fastened state. 1... Head screw, 2... Spring washer, 3... Mounting member, 3 ₁ ... Screw through hole, 7... Mounting member, 7
₁ ...screw hole, 7 ₂ ...annular projection.

Claims (1)

[Scope of utility model registration request] The second mounting member comprises a headed screw, a first mounting member or plurality of mounting members having a screw through hole, and a second mounting member fastened to the first mounting member by the headed screw, and A screw fastening structure characterized in that the mounting member has an annular protrusion having a U-shaped cross section on the periphery of the screw hole, and has a recess made of an elastic material that can be elastically deformed by fastening the headed screw.