KR100730619B1 - Fixing apparatus for printed circuit board - Google Patents

Abstract

A fixing apparatus of a printed circuit board(PCB) is provided to reduce a working process by being fixed to a frame simply when a PCB is fixed to the frame. A body part(10) is connected to a printed circuit board(PCB) through screws. A first supporting part(20) is installed in the body part to be rotated, and supports the top of a frame. A second supporting part(30) is installed in the body part with a fixed gap from the first supporting part to be rotated, and supports the bottom of the frame by penetrating a fixing hole of the frame. The body part includes a first rotation guide groove on the circumference in order to guide the rotation of the first supporting part, and a second rotation guide groove on the circumference in order to guide the rotation of the second supporting part.

Description

Printed circuit board fixing device {FIXING APPARATUS FOR PRINTED CIRCUIT BOARD}

1 is a perspective view of a printed circuit board fixing device according to an embodiment of the present invention;

2 is a cross-sectional view taken along line II-II of FIG. 1, and

3A to 3D are views illustrating the operation of the printed circuit board fixing device of the present invention.

<Explanation of symbols on main parts of the drawings>

1: frame 1 ': fixing hole

1a: anti-rotation hole 3: PCB

5 screw 10 body part

10 ': screw hole 11: first rotation guide groove

12: second rotation guide groove 20: first support

20a, 30a: anti-rotation protrusion 30: second support portion

The present invention relates to a printed circuit board fixing device.

The printed circuit board fixing device serves to fix the printed circuit board (hereinafter, referred to as 'PCB') to the PCB fixing frame and prevent the PCB from coming into direct contact with the frame. It is used to prevent shorts. A general PCB fixing device, such as a pem nut, is press-fitted into a fixing hole of a frame and then fixed by soldering a portion that contacts the frame with solder. Thus, the PCB is fixed to the fixing device fixed to the frame.

However, since the general PCB fixing device as described above is fixed to the frame by soldering or the like, there is a complicated work process.

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and an object of the present invention is to provide a printed circuit board fixing device capable of simply fixing the fixing device to the frame when the PCB is fixed to the frame using the fixing device. .

The printed circuit board fixing device according to the present invention for achieving the above object, the main body screwed to the printed circuit board; A first support part rotatably installed on the main body part and supporting an upper portion of the frame; And a second support part rotatably installed at the main body part at a predetermined distance from the first support part and penetrating the fixing hole of the frame to support the lower part of the frame.

The main body may include a first rotation guide groove provided on an outer circumferential surface of the main support to insert the inner diameter of the first support part into a rotation guide; And a second rotation guide groove provided on an outer circumferential surface so that the inner diameter of the second support part is inserted to guide the rotation.

Preferably, the second support portion has the same outer shape as the fixing hole and has a polygonal or elliptic shape.

Preferably, the first support part and / or the second support part is provided with an anti-rotation protrusion that is inserted into the anti-rotation hole formed in the frame.

The distance between the first support and the second support is preferably formed to correspond to the thickness of the frame.

      The above objects and other features of the present invention will become more apparent by describing the preferred embodiments of the present invention in detail with reference to the accompanying drawings. For reference, in the following description of the present invention, if it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a perspective view of a printed circuit board fixing apparatus according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1.

As shown in Figure 1 and 2, the PCB fixing device according to an embodiment of the present invention includes a main body 10, the first support 20, the second support 30 and the like.

The main body 10 is a cylindrical boss (BOSS), the screw hole (10 ') for fastening the PCB (3, Fig. 3d) and the screw 5 is formed on the top. The lower outer circumferential surface of the main body 10 is provided with a first rotation guide groove 11 and a second rotation guide groove 12 at predetermined intervals, preferably at intervals of a thickness of the frame 1 (see FIG. 3A).

The first support portion 20 is a polygonal or circular member having a predetermined area, and preferably a triangular plate. The first support part 20 is inserted into the first rotation guide groove 11 so as to support the upper portion of the frame 1 and is rotatably installed in the main body part 10. In the lower portion of the corner of the first support portion 20 is provided a rotation preventing projection 20a is inserted into the rotation preventing holes (1a) formed around the fixing hole (1 ') of the frame (1).

The second support part 30 has the same outer shape as the fixing hole 1 ′ of the frame 1 and is a polygonal or elliptic member. Preferably it is a triangular plate. The second support part 30 is inserted into the second rotation guide groove 12 so as to support the lower part of the frame 1 through the fixing hole 1 ′ and is rotatably installed in the main body part 10. An upper portion of the second support part 30 is provided with an anti-rotation protrusion 30a that is inserted into the anti-rotation hole 1a of the frame 1.

PCB fixture of the present invention configured as described above serves to secure the PCB (3) to the frame (1) and at the same time the electricity flowing through the PCB (3) so that the PCB (3) is not in direct contact with the frame (1) It is used to prevent shorts that can occur due to signals. As shown in Figures 3a to 3d, the PCB fixing device according to the present invention after positioning the second support 30 to match the fixing hole (1 ') of the frame 1, the second support 30 is Insert through the fixing hole (1 '). With the fixing hole 1 ′ of the frame 1 positioned between the first support part 20 and the second support part 30, the upper part of the frame 1 is rotated by rotating the first support part 20. The second support part 30 is rotated to support the lower part of the frame 1. At this time, the anti-rotation protrusions 20a and 30a respectively provided in the first support part 20 and the second support part 30 are respectively inserted into and locked in the anti-rotation holes 1a of the frame 1, thereby supporting the first support part ( 20 and the second support 30 is prevented from rotating. Thus, after fixing the PCB fixing device to the frame (1), the PCB (3) is fixed by fastening the screw (5) to the main body portion 10.

The present invention has been described above by way of example. The terminology used herein is for the purpose of description and should not be regarded as limiting. Many modifications and variations of the present invention are possible in light of the above teachings. Accordingly, the invention may be freely practiced within the scope of the claims unless otherwise stated.

According to the present invention as described above, when fixing the PCB to the frame using the fixing device, by simply fixing the fixing device to the frame, the work process can be shortened to improve productivity.

Claims (5)

A main body screwed to the printed circuit board; A first support part rotatably installed on the main body part and supporting an upper portion of the frame; And And a second support part rotatably installed at the main body part at a predetermined distance from the first support part, and supporting the lower part of the frame by passing through the fixing hole of the frame. . The method of claim 1, wherein the main body portion, A first rotation guide groove provided on an outer circumferential surface of the first support to insert the inner diameter of the first support; And And a second rotation guide groove provided on an outer circumferential surface of the second support to insert the inner diameter of the second support. The method of claim 2, The second support part has the same outer shape as the fixing hole, characterized in that the polygonal or elliptical shape. The method of claim 3, wherein Printed circuit board fixing device, characterized in that the first support and / or the second support is provided with a rotation preventing projection is inserted into the rotation prevention hole formed in the frame. The method of claim 1, The interval between the first support and the second support is fixed to the printed circuit board, characterized in that formed to correspond to the thickness of the frame.

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