JP4284433B2 - PCB mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a printed circuit board component mounting structure, and in particular, a printed circuit board is sandwiched between a pair of members provided on both sides of the printed circuit board, and a fuse, a crimp terminal, or the like is mounted between a screw head of a screw body and a first member. The present invention relates to a novel improvement for mounting a mounting component in a state where the height from the printed circuit board is kept lower than before by holding the component.
[0002]
[Prior art]
Conventionally, the configuration shown in FIG. 3 has been generally adopted as this type of printed circuit board.
That is, what is denoted by reference numeral 1 in FIG. 3 is a printed circuit board, and an electrode 2 having a land shape or the like is formed on one surface 1a of the printed circuit board 1 by a pattern or the like.
A member 3 having a U-shaped cross section is provided on one surface 1a of the printed circuit board 1. The legs 3a and 3b of the member 3 pass through the electrode 2 of the printed circuit board 1 and face the other surface 1b of the printed circuit board 1. By projecting, the member 3 is implanted and fixed on the printed circuit board 1. The electrode 2 and the member 3 are fixed by solder and electrically connected.
[0003]
A screw body 4 is rotatably screwed to the top of the member 3, and a screw portion 4 a of the screw body 4 protrudes inside the member 3.
[0004]
In the above-described state, when the attachment part 10 such as a fuse or a crimp terminal is attached to the printed circuit board 1, one end of the attachment part 10 is placed on the member 3 as shown in FIG. By screwing the screw body 4 into the screw hole of the member 3 from above through the hole, the mounting part 10 is sandwiched between the screw head 4b of the screw body 4 and the member 3, and the mounting part 10 is It was configured to be electrically connected to the electrode 2 of the printed circuit board 1 through the screw portion 4 a and the member 3.
Therefore, since the attachment component 10 is electrically connected to the electrode 2, the attachment of the attachment component 10 to the printed circuit board 1 is completed.
[0005]
[Problems to be solved by the invention]
Since the conventional printed circuit board component mounting structure is configured as described above, the following problems exist.
That is, the height a of the member to be planted on the printed circuit board is first required, and when the height of the screw body and the mounting part attached to this member is added, the overall height becomes b ′, The height of this was a height that would be an obstacle on the printed circuit board.
[0006]
The present invention has been made to solve the above-described problems. In particular, the printed circuit board is sandwiched between a pair of members provided on both surfaces of the printed circuit board, and between the screw head of the screw body and the first member. It is intended to provide a printed circuit board component mounting structure that allows mounting components to be mounted in a state where the height from the printed circuit board is kept lower than before by holding mounting components such as fuses and crimp terminals. Objective.
[0007]
[Means for Solving the Problems]
A printed circuit board component mounting structure according to the present invention is provided on a first member made of a conductive material provided on one surface of a printed circuit board, a second member provided on the other surface of the printed circuit board, and the second member. A plurality of engagement pieces that pass through the printed board and the first member and engage with the first member, and a screw body that passes through the first member and the printed board and is screwed into a screw hole of the second member. The mounting part is held between the screw head of the screw body and the first member, and an electrode is formed on one surface or / and the other surface of the printed circuit board. In addition, the claw portion formed on the engagement piece is engaged with the surface of the first member.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a printed circuit board component mounting structure according to the present invention will be described below with reference to the drawings. The same or equivalent parts as those in the conventional example will be described using the same reference numerals.
1 is a printed circuit board, and an electrode 2 having a land shape or the like is formed on one surface 1a of the printed circuit board 1 by a pattern or the like. The electrode 2 can be formed on one surface 1a and / or the other surface 1b.
[0009]
A first member 3 having a substantially plate shape as a whole is provided on one surface 1a of the printed circuit board 1, and a plurality of engagement holes 20 are formed at both side positions of the first member 3.
A second member 21 is provided on the other surface 1 b of the printed circuit board 1, and each engagement piece 25 formed to protrude from both sides of the second member 21 is attached to the printed circuit board 1. The first member 3 protrudes through the hole 26 and the engagement hole 20.
A claw portion 25a formed at the tip of each engagement piece 25 protrudes from the engagement hole 20 and engages with the surface 3A of the first member 3, whereby the first and second members 3 and 21 are engaged. Are fixed with the printed circuit board 1 in between.
[0010]
The screw body 4 inserted into the first through hole 30 formed in the first member 3 passes through the second through hole 31 formed in the printed circuit board 1 and then the screw hole formed in the second member 21. 32 is screwed and protrudes downward and penetrates.
[0011]
Next, a case where the mounting component 10 such as a fuse or a crimp terminal is attached in the above-described configuration will be described.
First, by loosening the screw body 4, the screw body 4 is extracted from the first through hole 30 of the first member 3, and then, as shown in FIG. 2, the mounting part 10 is placed on the first member 3, The hole 10 a of the mounting part 10 is aligned with the first through hole 30.
[0012]
In the above-described state, the screw body 4 is inserted into the screw hole 32 through the hole 10a, the first through hole 30, and the second through hole 31, and is screwed and tightened. 3 is fastened and fixed.
At the same time, the mounting part 10, the first member 3, the printed circuit board 1 and the second member 21 are firmly and integrally joined by screwing the screw body 4.
The coupling between the engagement piece 25 and the first member 3 has been described with respect to the case where the claw portion 25a is used. However, the claw portion 25a is not used, but for example, it is coupled integrally by heating and fusing. You can also The members 3 and 21 may be made of a conductive material, or may be formed of a resin and formed with a conductive plating film on the outer surface.
[0013]
【The invention's effect】
Since the printed circuit board component mounting structure according to the present invention is configured as described above, the following effects can be obtained.
That is, the plate-like first and second members are fixed so as to sandwich the printed circuit board, and screw members are provided through the respective members and the printed circuit board, and the mounting parts are fixed to the first member by the screw members. Therefore, it is not necessary to increase the height of each member as in the prior art, and the overall shape can be made flat.
In addition, by flattening the component mounting structure, the total thickness of the entire printed circuit board after mounting the mounting parts on the printed circuit board can be made thinner than before, and downsizing and flattening of a device that makes heavy use of printed circuit boards It can contribute to the conversion.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a printed circuit board component mounting structure according to the present invention.
FIG. 2 is a cross-sectional view of a main part showing a state where attachment parts are attached to FIG. 1;
FIG. 3 is a cross-sectional view showing a conventional configuration.
4 is a cross-sectional view showing a state in which attachment parts are attached to FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Printed circuit board 1a One surface 1b Other surface 2 Electrode 3 1st member 4 Screw body 4b Screw head 10 Mounting component 21 2nd member 25 Engagement piece 32 Screw hole 25a Claw part

Claims (3)

A first member (3) made of a conductive material provided on one surface (1a) of the printed circuit board (1); a second member (21) provided on the other surface (1b) of the printed circuit board (1); A plurality of engagement pieces (25) provided on the second member (21) and penetrating the printed circuit board (1) and the first member (3) and engaging the first member (3); A screw body (4) passing through the first member (3) and the printed circuit board (1) and screwed into the screw hole (32) of the second member (21); and a screw head of the screw body (4) A component mounting structure for a printed circuit board, wherein the mounting component (10) is held between (4b) and the first member (3). 2. The printed circuit board component mounting structure according to claim 1, wherein an electrode (2) is formed on one surface (1a) and / or the other surface (1b) of the printed circuit board (1). The printed circuit board according to claim 1 or 2, wherein a claw portion (25a) formed on the engagement piece (25) is engaged with a surface (3A) of the first member (3). Part mounting structure.

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