JP2538737Y2 - PCB mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a printed circuit board in an electronic device, and more particularly to a printed circuit board mounting structure suitable for mounting a printed circuit board having an input / output jack or the like fixed thereto in parallel with the bottom of a case.

[0002]

2. Description of the Related Art Conventionally, printed circuit board mounting structures as shown in FIGS. 3 and 4 have been provided.

FIG. 3 is an exploded perspective view showing a first example of a conventional printed circuit board mounting structure, and FIG. 4 is an exploded perspective view showing another example.

In the drawing, reference numeral 2 denotes a printed circuit board, 2a denotes a component surface of the printed circuit board, 2b denotes two holes provided on both sides of a rear part of the printed circuit board 2, and 2c denotes two holes provided on both sides of a front part of the printed circuit board.
Holes. Reference numeral 4 denotes an input / output jack, which is a type of connector component, and is attached with the plug insertion portion protruding from the attachment member.

Reference numeral 11 denotes a lower case which is a part of a case of the electronic equipment; 11a, a bottom surface of the lower case 11; 11b, bosses provided on both sides of a rear surface of the bottom surface 11a for mounting a printed circuit board;
Is a rising portion formed by bending at the front of the lower case 11, 11d is two holes for inserting an input / output jack, and 11e is two holes for inserting screws.

Reference numeral 12 denotes a mounting bracket to which two input / output jacks 4 are fixed, and is mounted facing the front edge of the printed circuit board 2. Reference numeral 12a denotes a pair of holes facing the holes 11e of the rising portion 11c and screwing the screws 5.

A lower case 13 has substantially the same shape as the lower case 11, and 13a
Is a bottom surface of the lower case 13, and 13b is a hole 4b provided opposite the holes 2b and 2c of the printed circuit board 2 for mounting the printed circuit board 2.
One boss, 13c is a rising portion formed similarly to the rising portion 11c, and 13d is two holes through which the input / output jack 4 is inserted.

Reference numeral 14 denotes a mounting bracket to which two input / output jacks 4 are fixed, and is mounted facing the front edge of the printed circuit board 2.

The mounting structure of the printed circuit board thus constructed will be described.

In the first example shown in FIG. 3, when assembling the printed circuit board 2 to which the mounting bracket 12 is attached to the lower case 11, the input / output jacks 4 of the printed circuit board 2 are connected to the rising portion 11.
The holes 11d, 11d of the c are fitted, and the holes 2b, 2b of the printed circuit board 2 are inserted.
Part on the bosses 11b, 11b on the bottom surface 11a,
The screw 5 is inserted into the holes 11d, 11d of the rising portion 11c bent at right angles from the above, and is attached to the holes 12a, 12a of the mounting bracket 12 provided opposite to the holes 11d, 11d. Next, the screw 5 is inserted into the holes 2b, 2b provided in the rear part of the printed circuit board 2 and attached to the bosses 11b, 11b on the bottom surface 11a.

In another example shown in FIG. 4, when the printed circuit board 2 to which the mounting brackets 14 are attached is assembled to the lower case 13, the input / output jacks 4, 4 of the printed circuit board 2 are provided as in the first example. Are fitted into the holes 13d, 13d of the rising portion 13c, and the holes 2b, 2b provided at the four corners of the printed circuit board 2 and the holes 2c, 2c are provided at the four bosses 13b, 13b, ... provided at the bottom surface 13a of the lower case 13. , And the screws 5 are inserted through the holes 2b, 2b and the holes 2c, 2c, and attached to the bosses 13a, 13a,.

[0012]

However, in the above-mentioned conventional printed circuit board mounting structure, in order to mount the printed circuit board on the lower case, first, the rising portion and the mounting bracket for the printed circuit board are mounted by screws from the lateral direction. In addition, since the rear part of the printed circuit board is attached to the boss with a screw from above, the screw tightening work is performed in two directions, and the workability is very poor.

Further, the positions of the screw holes of the printed circuit board and the bosses of the lower case are difficult to come out, and the printed circuit board is distorted due to being forcibly mounted to some extent, which may cause pattern breakage and solder cracks. Was.

In the other example shown in FIG. 4, the workability is good because the screw is tightened in one direction, but the mounting bracket is not fixed to the lower case every time the plug is inserted and removed from the input / output jack. A stress was applied to the printed circuit board to cause distortion, and the pattern was cut.

The present invention has been made in view of the above points, and has as its object to solve the drawbacks of the conventional example and to provide a printed circuit board mounting structure which has good workability and does not cause distortion on the printed circuit board. Where you do it.

[0016]

According to the invention, there is provided a printed circuit board mounting structure in which a connector component is fixed by projecting from a flat portion of a mounting member so that the flat portion faces an edge of the printed board. A mounting structure for a printed circuit board in an electronic device in which a member is fixed to a printed circuit board, the connector component is inserted into a hole provided in a rising portion of the lower case, and the printed circuit board is mounted parallel to a bottom surface of the lower case. And at least one tongue protruding inward from the top of the rising portion provided in the lower case and parallel to the bottom surface and having a first hole, and a fitting hole fitted with the tongue. A second hole is provided so that the tongue enters the inside, and a flat plate-shaped protrusion parallel to the printed board is provided on the mounting member, and the tongue is fitted to the fitting hole;
A screw inserted into the second hole is screwed into the first hole, and the printed circuit board is mounted on the lower case via the mounting bracket.

Further, both sides of the tongue piece are formed such that the base is parallel and the tip is tapered.

[0018]

According to the invention, at least one tongue provided on the rising portion of the case is fitted into the fitting hole provided on the mounting member of the printed circuit board so that the printed circuit board is parallel to the bottom surface of the case. Since the second hole provided in the flat protrusion of the mounting member and the first hole provided in the tongue piece on the lower side thereof are opposed to each other, they can be fastened with screws from above.

Also, since the base of each side of the tongue is parallel to each other and the tip is tapered, when the tongue is fitted into the fitting hole, the slope of the tapered portion becomes a guide, and the bottom of the base is formed. The parallel parts determine the lateral positioning.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a printed circuit board mounting structure according to the present invention will be described with reference to FIGS. The same parts as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 1 is an exploded perspective view showing the present invention. FIG. 2A is a plan view showing a state in which the tongue piece is being fitted into the fitting hole, and FIG. 2B is a plan view showing a state in which the tongue piece is fitted in the fitting hole.

In the figure, 1 is a lower case which is a part of a case of an electronic device, 1a is a bottom surface of the lower case 1, 1b is a boss provided on each side of a rear portion of the bottom surface 1a for mounting a printed circuit board 2, Reference numeral 1c denotes a rising portion formed by bending the front portion of the lower case 1, and 1d denotes three holes through which the input / output jack 4 is inserted.

Reference numeral 1e denotes two tongues provided on the top of the rising portion 1c. Both sides 1g of the base 1f are parallel, and the tip is tapered 1h. A first hole 1i into which the screw 5 is screwed is provided in the center of the tapered portion 1h.

Reference numeral 3 denotes a mounting member which is a member in which three input / output jacks 4 protrude from the flat portion 3a and are fixed. The input / output jack 4 faces outward with respect to the printed circuit board 2, and the flat portion 3a is substantially perpendicular to the printed circuit board 2. Mounted facing the edge.

Reference numeral 3b denotes two fitting holes provided to fit the tongue pieces 1e. Reference numeral 3c denotes a flat plate-shaped protrusion provided on the top of the flat portion 3a by bending, and three input / output jacks 4c.
Are fitted in the holes 1d, and two tongues 1e are fitted in the fitting holes 3b, respectively. When the two holes 2b of the printed circuit board 2 are placed on the two bosses 1b, the tongues 1e The first hole 1i of the tongue piece 1e and the two second holes 3d provided in this protruding portion are located close to the lower portion (inner side) of 3c.

The mounting structure of the printed circuit board thus constructed will be described.

The input / output jacks 4, 4,... Provided on the printed circuit board 2 are fitted into the holes 1d, 1d,. The holes 3b are fitted into the holes 3b, respectively. At this time, as shown in FIG.
The tapered 1h portion serves as a guide, smoothly fits into the fitting hole 3b, and when fitted to a predetermined position as shown in FIG. 2 (B), both sides 1g, 1g of the base 1f become both sides of the fitting hole 3b. Thereby restricting the position in the horizontal direction.

Therefore, when the printed circuit board 2 is pushed into a predetermined position and the holes 2b, 2b are pressed toward the bottom surface 1a, the front, rear, left and right positions of the printed circuit board 2 are determined, and the first holes 1i, 1b provided in the tongue piece 1e are determined. 1i, second holes 3d, 3d provided in the projection 3c, and holes 1b, 1b provided in the bottom surface 1a and holes provided in the printed circuit board 2.
2b and 2b overlap each other.

Next, the screw 5 is inserted into the second holes 3d, 3d and the holes 2b, 2d.
b, and screwed and attached to the first holes 1i, 1i and the bosses 1b, 1b, respectively.

The mounting bracket 3 may be formed using a synthetic resin.

The two mounting holes 2b provided on the printed circuit board 2 are made sufficiently larger than the diameter of the screw 5 so that
Alignment with the boss 1b is further facilitated.

Although the mounting bracket 3 is attached to the tongue piece 1e with the screw 5, the shape of the protruding portion 3c of the mounting bracket 3 and the tongue piece 1e is changed so that the tongue piece 1e can be easily bent. 1e
May be bent to lock the mounting bracket 3.

Alternatively, a locking claw may be provided on the tongue piece 1e and fitted into the fitting hole 3b to lock the fitting 3 having the fitting hole 3b.

[0034]

According to the mounting structure of a printed circuit board according to the present invention, since the above-described configuration is adopted, the screw tightening work when mounting the printed circuit board is entirely performed in one direction from above, and workability is improved. Very good.

Further, since the mounting position is matched by fitting the printed circuit board to a predetermined position of the lower case, no excessive force is applied during mounting and no distortion occurs.

Further, even if a plug is inserted into or removed from the input / output jack, the external force is absorbed by the tongue, and no stress is applied to the printed circuit board.

Moreover, it has excellent features such as easy implementation due to its simple structure.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a printed circuit board mounting structure according to the present invention.

FIG. 2A is a plan view showing a state in which a tongue piece is being fitted into a fitting hole in the same structure. (B) It is a top view showing the state where the tongue piece was fitted in the fitting hole in the same structure.

FIG. 3 shows a first example of a printed circuit board mounting structure in a conventional example.
It is an exploded perspective view which shows the example of.

FIG. 4 is an exploded perspective view showing another example of the same structure.

[Explanation of symbols]

 1 Lower Case 1a Bottom 1b Boss 1c Rise 1d Hole 1e Tongue 1f Base 1g Side 1h Tapered 1i First Hole 2 Printed Circuit Board 2b Hole 3 Mounting Bracket 3a Flat Surface 3b Fitting Hole 3c Projection 3d Second Hole 4 input / output jack 5 screw

Claims (2)

(57) [Scope of request for utility model registration] 1. A connector component is fixed by projecting from a flat portion of a mounting member, and the mounting member is fixed to the printed circuit board such that the flat surface faces an edge of the printed circuit board, and is provided on a rising portion of the case. In the mounting structure of the printed circuit board in the electronic device configured to insert the connector component into the hole and mount the printed circuit board in parallel with the bottom surface of the case, the printed circuit board faces inward to the top of the rising portion provided in the case. At least one tongue protruding parallel to the bottom surface and having a first hole; a fitting hole for fitting the tongue and a second hole such that the tongue enters inside; A flat plate-shaped protrusion parallel to the printed circuit board is provided on the mounting member, the tongue piece is fitted to the fitting hole, and a screw inserted into the second hole is screwed into the first hole. Print base via mounting member Mounting structure of a printed circuit board, characterized by being configured to attach to the case of. 2. The printed circuit board mounting structure according to claim 1, wherein a base portion is formed parallel to both side portions of the tongue piece and a tip portion is formed to be tapered.