JPH0465889A - Columnar component placing structure - Google Patents

Abstract

PURPOSE:To lower the mounting height of a columnar component and to prevent disconnection of a lead terminal by laying and inserting the body of the component into a square hole of a printed circuit board, seating the component on the hole, and clamping the component by U-shaped fittings for holding the half of the peripheral wall of the body at the board. CONSTITUTION:A columnar component 10 is inserted into a square hole 20 in a state that a body 11 is laid. Accordingly, the lower part of the body 11 protrudes to the rear surface side of a printed circuit board 1, its peripheral wall is engaged with the long side of the hole 20 to be supported, and the end of the body 11 is engaged with the short side of the hole 20. That is, the component 10 is seated on the board 1. A spacer 18 made of a fancy-like felt, rubber, etc., is brought into contact with the inside of a holder 16, so engaged as to cover the half of the body 11 with the holder 16 through the spacer 18, and U-shaped fittings 15 is mounted at the component 10. Thereafter, a small screw 14 is inserted into a threaded hole opened at the board 11 from its rear surface, and the screw is engaged with the hole of a securing seat 17 to clamp the component 10 at the board 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a structure for mounting electrical components such as a cylindrical capacitor and a cylindrical battery on a printed wiring board.

3. Detailed Description of the Invention [Summary] Regarding the structure for mounting electric components such as cylindrical capacitors and cylindrical batteries on printed wiring boards, [Prior Art] Fig. 2 is a perspective view of a conventional example, and Fig. 3 The figures show another conventional example, in which (a) is a perspective view and (b) is a cross-sectional view.

In FIG. 2, lO is a cylindrical part such as a capacitor or battery whose main body 11 is formed into a cylindrical shape,
The lead terminal 12 is led out from the end surface of the main body portion 11 .

(2) is a printed wiring board that is mounted in parallel in a box-shaped shelf (not shown) of an electrical device.

The cylindrical component IO is mounted on the printed wiring board 1 with the main body 11 standing upright, with the lead terminals 12 inserted into the through holes 2 of the printed wiring board and soldered.

Note that the lead terminals 12 are soldered to the through holes 2 by dipping the back surface of the printed wiring board 1 into a molten solder bath with the tips of the lead terminals 12 inserted into the through holes 2.

In FIG. 3, 15 is a U-shaped metal fitting formed by pressing a band-shaped metal plate (stainless steel, brass, etc.).

The U-carved metal fitting 15 is composed of an inverted U-shaped holding part 16 that is in close contact with half of the peripheral wall of the cylindrical part IO, and fixed dust 17 formed by bending both side edges of the holding part 16 outward at right angles. A tapped hole into which a small screw I4 is screwed is provided in the center of each fixed dust 17.

I8 is a rectangular spacer made of felt, rubber, or the like.

The cylindrical component 10 is laid down on the mounting surface of the printed wiring board 1, and the spacer 18 is placed inside the holding part 16, and the spacer 1
8, the holding part 16 is engaged so as to cover the half part of the main body part 11, and the U carved metal fitting 15 is attached to the cylindrical part IO.

Then, by inserting machine screws 14 from the back side into the screw holes drilled in the printed wiring board 1 and screwing the threaded portions into the screw holes in the fixed dust 17, the cylindrical part 1O is fastened to the printed wiring board 1. I'm wearing it.

On the other hand, the lead terminal 12 is bent at a right angle and its tip is
It is inserted into the through hole and soldered.

[Problem to be solved by the invention]

However, in the former case, the main body 11 stands upright, the lead terminals 12 are soldered to through holes, and mounted on the printed wiring board l.

On the other hand, the printed wiring board I is mounted on a shelf with its mounting surface vertical.

Therefore, there was a problem in that the cylindrical component IO fell down due to the weight of the main body 11, and the lead terminal 12 was cut.

Furthermore, since the mounting height of the cylindrical component 1O is high, there is a problem in that a large number of printed wiring boards 1 cannot be arranged closely on a shelf.

Furthermore, since the main body part 11 is upright, when it is dipped in a molten solder tank and the lead terminals 12 are soldered, the lead terminals 12 may be bent and the cylindrical part 10 may fall down. No soldering work is done.
There was a problem.

The latter has a somewhat low (suppressed) mounting height, so the problems of the former are almost solved.

However, since the peripheral wall of the cylindrical component 10 is mounted in a state of circumscribing the mounting surface of the printed wiring board l, the fixation is uncertain.

Therefore, when transporting the printed wiring board l, etc., the cylindrical part 1
There was a risk that the 0 would shift in the axial direction and collide with other mounted parts.

Furthermore, there was a risk that the lead terminals 12 would be disconnected due to the displacement of the main body portion 11.

Furthermore, in the latter case, when fastening the U-carved metal fitting 15 to the printed wiring board l, the U-carved metal fitting 15 is adjusted and moved from side to side to align the screws of the stuck dust 17 with the screw holes of the printed wiring board l. There must be.

When adjusting the position of this U carving tool I5, with the lead terminal 12 inserted into the through hole 2, the cylindrical part lO is
It moves together with the engraving tool 15, and the main body 11 slides on the mounting surface of the printed wiring board or rotates.

If this happens, the lead terminals 12 will bend or the lead terminals will come into contact with each other, so the U
There is a problem in that the mounting of the shaped fittings requires extreme caution.

The present invention was created in view of these points, and the mounting height of the cylindrical component is low, there is no fear that the lead terminal will break, and the soldering of the lead terminal is easy. The purpose is to provide structure.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a main body 11 of a cylindrical component IO inserted horizontally into a rectangular hole 20 of a printed wiring board l, a peripheral wall of the main body 11 being supported by an edge of the rectangular hole 20,
With the cylindrical part 10 seated on the square hole 20, the U-carved metal fitting 15 that holds the half of the peripheral wall of the main body part 11 is used.
The configuration is such that a cylindrical component IO is fastened to a printed wiring board 1.

On the other hand, the lead terminal 12 has a structure in which the lead terminal 12 is bent at a nearly right angle, and its tip end is inserted into the through hole 2 of the printed wiring board 1 and soldered.

[Effect]

According to the present invention, the cylindrical component is seated in the rectangular hole of the printed wiring board with the main body lying on its side, and the main body is pressed and fastened toward the printed wiring board by the U-shaped metal fitting.

Therefore, the mounting height of the cylindrical component is lower than the diameter of the main body.

Further, since the main body of the cylindrical part is inserted and seated in the square hole, the cylindrical part does not rotate or shift on the printed wiring board during or after mounting the U-shaped metal fitting. Therefore, there is no fear that the lead terminals will be bent or that the lead terminals will come into contact with each other.

That is, the cylindrical component can be fastened to the printed wiring board without paying much attention to the condition of the lead terminals, and the installation of the U-shaped fitting is easy.

Furthermore, since the lead terminals can be soldered while the cylindrical part is securely fixed to the printed wiring board, the lead terminals can be easily removed from the through-holes.
It doesn't bend either.

〔Example〕

The present invention will be specifically described below with reference to the drawings. Note that the same reference numerals indicate the same objects throughout the figures.

FIG. 1 is a diagram of an embodiment of the present invention, (a) is a perspective view, (b)
1 is a cross-sectional view.

In FIG. 1, a printed wiring board 1 has a through hole 2 in which a lead terminal 12 of a cylindrical component IO is inserted.
A square hole 20 is bored.

The square hole 20 has a rectangular shape with a width smaller than the diameter of the main body 11 of the cylindrical part 1O and a length slightly larger than the entire length of the main body 11.

A cylindrical component 10 such as a capacitor or battery having a cylindrical main body 11 has a lead terminal 12 led out from an end face of the main body 11 and bent at a right angle.

The cylindrical component 10 is inserted into the rectangular hole 20 with the main body 11 lying on its side. Therefore, the lower part of the main body part 11 protrudes toward the back side of the printed wiring board l, and the peripheral wall part forms the square hole 20.
The end face of the main body portion 11 is engaged with the short side of the rectangular hole 20 .

That is, the cylindrical part lO is seated on the printed wiring board l.

Note that in the seated state, each tip of the lead terminal 12 is inserted into the corresponding through hole 2.

The U-engraved metal fitting 15, which is made by pressing a band-shaped metal plate (stainless steel, brass, etc.), has an inverted U-shaped holding part 16 that is in close contact with half of the peripheral wall of the cylindrical part 1O, and both side edges of the holding part 16. Each of the fixed particles 17 is bent outward at right angles, and a screw hole into which a machine screw 14 is screwed is provided in the center of each fixed particle 17.

A spacer 18 made of rectangular felt, rubber, etc. is applied to the inside of the holding part 16, and the holding part 16 is engaged with the half of the main body part 11 via the spacer 18, and the U carved metal fitting 15 is fitted. The cylindrical part IO is attached to the cylindrical part IO, and then the machine screw 14 is inserted from the back side into the screw hole drilled in the printed wiring board l, and the screw part is screwed into the screw hole of the fixed dust 17. is fastened to the printed wiring board 1.

After fastening the cylindrical part lO to the printed wiring board l as described above, the back side of the printed wiring board l is dipped in a molten solder bath, and the lead terminals 12 inserted into the through holes 2 of the printed wiring board l are The tip is soldered to the through hole 2.

As described above, in the present invention, a part of the main body protrudes to the back side of the printed wiring board 1, so the mounting height of the cylindrical component 1O is lower than the diameter of the main body 11. Therefore, a large number of printed wiring boards l can be arranged closely on a shelf.

Further, since the main body 11 of the cylindrical part 10 is seated in the rectangular hole 20, the cylindrical part 10 does not rotate or shift on the printed wiring board when or after the U-engraved metal fitting 15 is installed. Therefore, the lead terminal 12 may be bent.

Alternatively, there is no fear that the lead terminals will come into contact with each other.

Furthermore, since the cylindrical component 10 can be fastened to the printed wiring board 1 without paying much attention to the condition of the lead terminal 12, the installation of the U-shaped fitting is easy.

Furthermore, since the lead terminal 12 is soldered while the cylindrical component IO is fixed to the cylindrical component IO, the lead terminal 12 may come out from the through hole 2 at this time. , no bending.

〔Effect of the invention〕

As explained above, the present invention has a configuration in which a square hole is provided in a printed wiring board and a cylindrical component is seated in the square hole, and the present invention has the following excellent effects.

A large number of printed wiring boards can be arranged on a shelf in close proximity, with the mounting height of the cylindrical component being lower than the diameter of the main body.

Since the cylindrical part does not rotate or shift on the printed wiring board when or after the U-shaped metal fitting is installed, there is no fear that the lead terminals will bend or that the lead terminals will come into contact with each other. Furthermore, the installation of the U-shaped fitting is easy.

When soldering a lead terminal to a through hole, the cylindrical component does not fall or the lead terminal bends, the soldering work is performed smoothly, and the reliability of the soldering is high.

[Brief explanation of drawings]

FIG. 1 is a diagram of an embodiment of the present invention, (a) is a perspective view; (b) is a cross-sectional view, Figure 2 is a perspective view of the conventional example; Figure 3 is a diagram of another conventional example, (a) is a perspective view; (b) is a sectional view. In the figure, ■ is printed wiring board, IO is a cylindrical part, I2 is a lead terminal, 15 is a U-shaped metal fitting, 17 is a fixed seat; It is a square hole. 2 is a through hole, 11 is the main body part, 14 is a machine screw, I6 is the holding part, ■8′! Spacer, No. 27

Claims (1)

[Claims] The cylindrical part (1) is inserted into the square hole (20) of the printed wiring board (1).
The main body part (11) of 0) is inserted horizontally, and the main body part (11) of
) is supported by the edge of the square hole (20), and the cylindrical part (10) is seated on the square hole (20) and holds half of the peripheral wall of the main body (11). The cylindrical part (10) is fastened to the printed wiring board (1) by a U-shaped fitting (15), and the lead terminal (12) of the cylindrical part (10) is connected to the printed wiring board (1). ) A mounting structure for cylindrical parts, which is characterized by being inserted and soldered into the through-hole (2).