JP2005026601A - Structure for attaching power-supply apparatus to board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure for attaching a power-supply apparatus to a board whereby a terminal can be connected easily and surely with a printed board whereon electronic components are mounted highly densely. <P>SOLUTION: The structure has a first through hole 16 formed in an electrode of a printed board 12 and passing through the printed board 12, a terminal 22 so superimposed on the surface of the printed board 12 wherein the electrode is provided as to connect it with the electrode, a second through hole 24 formed in the terminal 22 and communicating with the first through hole 16 of the printed board 12, an attaching plate 26 superimposed on the opposite surface of the printed board 12 to its surface having the electrode, a screw hole 28 formed in the attaching plate 26 and communicating with the first through hole 16 of the printed board 12 and with the second through hole 24 of the terminal 22, and a male screw 32 inserted from the side of the terminal 22 into it and so passed through the first and second through holes 16, 24 as to be screwed engagingly to the screw hole 28 of the attaching plate 26. Further, the attaching plate 26 so has an inserting protrusion 30 protruded to the side of the printed board 12 as to fasten it to an attaching hole 20 of the printed board 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a board mounting structure for a power supply device that supplies predetermined output power.

  As shown in FIG. 4, in a conventional power supply device, an electronic component 2 such as a semiconductor, a resistor, and a coil is mounted on a printed circuit board 1 on which a circuit having a predetermined shape is printed. A through hole 4 for attaching a plate-like terminal 3 is formed in an electrode portion formed on the printed circuit board 1. A screw hole 5 communicating with the through hole 4 is formed in the terminal 3. Then, the terminal 3 is overlapped with the electrode, the male screw 6 is inserted from the substrate 1 side, the male screw 6 is turned by the driver 7 and screwed into the screw hole 5 of the terminal 3, and the substrate 1 and the terminal 3 are electrically and mechanically connected. Connected.

Japanese Utility Model Publication No. 5-97064

  In the case of the above-described conventional technology, since the male screw 6 is inserted from the surface side of the printed circuit board 1 and the male screw 6 is rotated by the driver 7, a space for the driver 7 to enter is necessary around the screwed portion of the printed circuit board 1. There is a problem that the electronic component 2 cannot be mounted on the printed circuit board 1 in terms of density. Moreover, since it cannot fix with a screw in the location where the electronic components 2 are crowded, the other connection method was calculated | required.

  The present invention has been made in view of the above-described conventional problems, and has a board mounting structure for a power supply device capable of easily and reliably connecting terminals to a printed circuit board on which electronic components are mounted at a high density. The purpose is to provide.

  This invention is connected to a printed circuit board on which a circuit is formed, a first through hole formed in an electrode provided on the printed circuit board and penetrating the printed circuit board, and a surface of the printed circuit board provided with the electrode. A terminal formed on the terminal, a second through hole communicating with the first through hole of the printed circuit board, and a mounting plate overlaid on a surface of the printed circuit board opposite to the surface on which the electrode is provided A screw hole formed in the mounting plate and communicating with the first through hole of the printed circuit board and the second through hole of the terminal, and the second through hole and the first through hole inserted from the terminal. It is a board mounting structure of a power supply device in which a male screw that passes through a hole and is screwed into the screw hole of the mounting plate is provided, and the printed board and the terminal are connected by the male screw.

  The mounting plate is provided with an insertion protrusion that protrudes toward the printed circuit board, and the printed circuit board is formed with an attachment hole into which the insertion protrusion is inserted, and the insertion protrusion is fixed to the attachment hole. It consists of Furthermore, the circuit pattern of the printed circuit board is connected to the mounting hole, and the insertion protrusion is fitted into the mounting hole and fixed by conductive fixing means such as solder or conductive paint.

  The board mounting structure of the power supply device of the present invention enables the electronic components mounted on the printed circuit board surface to be obstructed when the terminals are mounted on the printed circuit board so that they can be screwed from the terminal side of the circuit printed surface. In this case, the terminal and the printed circuit board are simply connected.

  According to the power supply device mounting structure of the present invention, it is possible to easily and securely attach and fix the terminals to the printed circuit board on which electronic components are densely mounted by using male screws. Thereby, a printed circuit board can be saved and a power supply device can be reduced in size.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3 show an embodiment of the present invention. A substrate mounting structure 10 for a power supply device according to this embodiment includes a semiconductor, a resistor, and a coil on a printed circuit board 12 on which a circuit having a predetermined pattern is formed. An electronic component 14 such as is mounted. A first through hole 16 for attaching a plate-like terminal 22 to be described later is formed in the electrode portion formed on the printed board 12 so as to penetrate the printed board 12. In the vicinity of the first through hole 16, a slit-like attachment hole 20 into which an insertion projection 30 of the attachment plate 26 described later is inserted is formed.

  Plate-like terminals 22 are overlapped and connected to the surface of the printed circuit board 12 on which the electrodes are printed. A second through hole 24 that communicates with the first through hole 16 of the printed circuit board 12 is formed through the terminal 22 in the terminal 22.

  On the surface opposite to the surface on which the electrodes of the printed circuit board 12 are provided, a conductive metal mounting plate 26 is provided so as to overlap. A screw hole 28 is formed in the mounting plate 26 so as to communicate with the first through hole 16 of the printed circuit board 12 and the second through hole 24 of the terminal 22. At one end portion 26 a of the mounting plate 26, an insertion protrusion 30 is formed that protrudes toward the printed circuit board 12. The insertion protrusion 30 is inserted into the mounting hole 20 of the printed circuit board 12 and is fixed by solder 34.

  The male screw 32 is inserted from the terminal 22 side through the second through hole 24 of the terminal 22 and the first through hole 16 of the printed circuit board 12. The front end of the male screw 32 is screwed into the screw hole 28 of the mounting plate 26 to connect the printed circuit board 12 and the terminal 22. Further, the circuit pattern of the printed circuit board 12 and the mounting plate 26 are also connected to the mounting hole 20 and the insertion protrusion 30 is fitted into the mounting hole 20 and fixed by the solder 34. Electrically connected.

  In assembling the board mounting structure 10 of the power supply device, first, the mounting board 26 is overlapped on the surface of the printed circuit board 12 opposite to the surface where the circuit is formed, and the mounting board 26 is inserted into the mounting hole 20 of the printed circuit board 12. The protrusion 30 is inserted and aligned with a predetermined position, the attachment hole 20 and the insertion protrusion 30 are fixed by the solder 34, and the circuit pattern and the attachment plate 26 are connected. Then, the terminal 22 is overlaid on the electrode on the surface on which the circuit of the printed board 12 is printed, and the second through hole 24 is aligned with the first through hole 16. Then, the male screw 32 is inserted from the terminal 22 into the second through hole 24 of the terminal 22 and the first through hole 16 of the printed circuit board 12, and screwed into the screw hole 28 of the mounting plate 26.

  According to the board mounting structure 10 of the power supply device of this embodiment, even if the electronic components 14 are densely mounted on the printed board 12, the terminal 22 can be easily mounted by turning the male screw 32 with a screwdriver from the terminal 22 side. Can be connected. Therefore, the attachment of the terminal 22 is simple and reliable regardless of the position and number of the electronic components 14 mounted on the printed circuit board 12. Furthermore, the electronic components 14 can be mounted on the printed circuit board 12 with a higher density, space saving of the printed circuit board is possible, and the power supply device can be further downsized.

  Note that the power supply device mounting structure of the present invention is not limited to the above-described embodiment, provided that terminals and mounting plates are provided and the surface of the printed circuit board is provided with necessary electrodes and circuit patterns. In addition to a substrate having a circuit pattern formed on one side, a substrate having a circuit pattern or electrodes formed on both sides may be used. Further, the shape and material of the mounting plate, the mounting position and number of the insertion protrusions, etc. can be freely changed. The mounting plate may be fixed to the printed circuit board by other means such as a conductive adhesive in addition to the solder. The mounting hole may be a recess on the surface of the printed circuit board.

It is a side view of the board | substrate mounting structure of the power supply device of one Embodiment of this invention. It is a longitudinal cross-sectional view of the board | substrate mounting structure of the power supply device of this embodiment. It is the front view (a) and right view (b) of the mounting plate of the board | substrate mounting structure of the power supply device of this embodiment. It is a side view of the board | substrate mounting structure of the conventional power supply device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Board mounting structure of power supply device 12 Printed circuit board 14 Electronic component 16 First through hole 20 Mounting hole 22 Terminal 24 Second through hole 26 Mounting plate 28 Screw hole 30 Insertion protrusion 32 Male screw 34 Solder

Claims (3)

  A printed circuit board on which a circuit is formed; a first through hole formed in an electrode provided on the printed circuit board and penetrating the printed circuit board; and a terminal connected to be overlapped on the surface of the printed circuit board on which the electrode is provided A second through hole formed in the terminal and communicating with the first through hole of the printed circuit board, a mounting plate overlaid on a surface opposite to the surface of the printed circuit board on which the electrode is provided, and the mounting A screw hole that is formed on a board and communicates with the first through hole of the printed circuit board and the second through hole of the terminal, and is inserted from the terminal and passes through the second through hole and the first through hole. A board mounting structure for a power supply device, wherein a male screw screwed into the screw hole of the mounting plate is provided, and the printed board and the terminal are connected by the male screw.   The mounting plate is provided with an insertion protrusion that protrudes toward the printed circuit board, and the printed circuit board is formed with an attachment hole into which the insertion protrusion is inserted, and the insertion protrusion is fixed to the attachment hole. The board mounting structure for a power supply device according to claim 1, wherein   3. The power supply according to claim 2, wherein a circuit pattern of the printed circuit board is connected to the mounting hole, and the insertion protrusion is fitted into the mounting hole and fixed by conductive fixing means. The board mounting structure of the device.

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