JPH118481A - Protective structure for component on circuit board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protective structure for the components on a circuit board, wherein the creeping distance of the components on the circuit board is ensured for higher insulation, the components on the circuit board are prevented from falling, and moreover a laminate for ensuring the creeping distance and prevention of falling can be fabricated from extra circuit boards for cost reduction. SOLUTION: Fitting holes 1a, 1a are formed in a circuit board 1 in proximity to components 2 mounted upright thereon, such as capacitors, and the legs 3a, 3a of a laminate 3 for ensuring the creeping distance of the components 2 and preventing the components 2 from falling are fit into the fitting holes 1a, 1a. Thus, the laminate 3 is mounted upright on the circuit board 1 in proximity to the components 2. The laminate 3 has the lower end portions 3b, 3b of its legs 3a, 3a formed into a wedge or key shape, so that the legs 3a, 3a are fit into the fitting holes 1a, 1a in the circuit board 1 and anchored there. Further, the laminate 3 is formed from extra circuit boards, when the circuit boards 1 are manufactured.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protection structure for a component on a circuit board for securing a creepage distance and preventing a component such as a capacitor standing on the circuit board from falling down.

2. Description of the Related Art Hitherto, in order to insulate components on a circuit board from other metal components, the components on the circuit board have been covered with an insulating tube or a heat-shrinkable tube, or an insulating sheet has been used. .

However, when an insulating tube, a heat-shrinkable tube, an insulating sheet, or the like that covers components on a circuit board is used, there is a problem that extra manufacturing costs are required. Further, there has been a problem in that the insulating tube, the heat-shrinkable tube, or the insulating sheet may be partially peeled or damaged when used for a long period of time, resulting in insufficient insulation. In addition, many components on the circuit board are erected on the circuit board through wiring, and therefore, they may fall sideways due to external impact, etc. There was a problem that was difficult. The present invention solves the conventional problems described above, can secure the creepage distance of components on a circuit board, can enhance insulation, and can prevent components from falling down on a circuit board. It is an object of the present invention to provide a protection structure for components on a circuit board, which can be manufactured by using a surplus of the circuit board for securing a distance and preventing a fall, thereby reducing costs.

SUMMARY OF THE INVENTION The present invention has been proposed in order to achieve the above-mentioned object, and the invention according to the first aspect is directed to the construction of components such as capacitors erected on a circuit board. A protection structure for components on a circuit board for securing creepage distance and preventing falling, forming a fitting hole at a location near a component erected on the circuit board, and in the fitting hole,
It is characterized in that legs of a laminated board for securing the creepage distance of the component and preventing the component from falling down are fitted, and the laminated plate is erected at a position near the component on the circuit board. In the invention described in claim 2, the lower end of the leg portion of the laminated board is formed in a wedge shape or a key shape, and the lower end portion is fitted and locked in the fitting hole of the circuit board. It is characterized by. The invention according to claim 3 is characterized in that the laminate is formed by an excess portion of the circuit board when the circuit board is manufactured.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a protection structure for components on a circuit board according to the present invention. FIG. 1 is a perspective view showing an example of a protection structure for components on a circuit board according to the present invention, and FIG. 2 shows a state in which a laminate for protecting components on the circuit board is erected on the circuit board. It is an exploded perspective view. As shown in FIG. 1, the protection structure of the components on the circuit board according to the present embodiment includes electronic devices such as video,
Two fitting holes 1a, 1a are formed at predetermined intervals in the vicinity of a component 2 such as a capacitor erected on a circuit board 1 used for an electric device, and the fitting holes 1a, 1a are formed.
The legs 3a, 3a of the laminated plate 3 having a substantially quadrangular shape in a side view for securing the creepage distance of the component 2 and preventing the component 2 from falling down,
The laminate 3 is erected at a position near the component 2 on the circuit board 1. Further, as shown in FIG. 2, the laminated plate 3 has lower ends 3b, 3b of the legs 3a, 3a formed in a key shape, and the lower ends 3b, 3b of the keyed holes are fitted into the fitting holes of the circuit board 1. 1
a, 1a to prevent slippage. Note that the lower ends 3b, 3b of the legs 3a, 3a of the laminated plate 3 may be formed in a wedge shape and fitted and locked. Further, it is preferable that the laminated board 3 is formed of an excess portion of the circuit board when the circuit board 1 is manufactured. According to the protection structure of the components on the circuit board of the present embodiment, the components 2 such as the capacitors on the circuit board 1 are protected by the laminate 3, so that the other metal components 4 of the circuit board 1 are protected.
(See FIG. 1), the creepage distance can be ensured, the insulation can be improved, and the component 2 can be prevented from falling down by the laminated plate 3. Moreover, the legs 3 of the laminate 3
Since the lower end portions 3b, 3b of the a, 3a are formed in a key shape or a wedge shape, the lower end portions 3b, 3b are fitted into the fitting holes 1a, 1a of the circuit board 1 to be locked. Can be prevented from falling off, and the laminated board 3 can be stably erected on the circuit board 1 without falling down, and the creepage distance of the components 2 such as the capacitors on the circuit board 1 can be secured and the falling down can be prevented. Can be performed reliably. In addition, by forming the laminate 3 with an excess portion of the circuit board when the circuit board 1 is manufactured, cost can be reduced. Note that the laminated plate 3 is not limited to one having a substantially quadrangular shape as viewed from the side as shown in FIGS. 1 and 2, and may have another shape such as a substantially triangular shape, a substantially circular shape, or a substantially elliptical shape when viewed from the side.

As described above, according to the first aspect of the present invention, a fitting hole is formed in the vicinity of a component erected on the circuit board, and the fitting hole is laminated on the fitting hole. The legs of the board were fitted, and this laminated board was erected at a position near the components on the circuit board.
The creepage distance of components such as capacitors on the circuit board can be ensured, insulation can be enhanced, and the components can be prevented from falling on the circuit board by a laminated plate erected near the components. . According to the second aspect of the present invention, the lower ends of the legs of the laminated plate are formed in a wedge shape or a key shape, and the lower ends are fitted and locked in the fitting holes of the circuit board. The laminated board can be prevented from falling off, and the stable standing state of the laminated board can be maintained, and the creepage distance of components on the circuit board can be ensured by the laminated board and the falling can be reliably prevented. According to the third aspect of the present invention, the cost can be reduced by forming the laminated board with an excess of the circuit board at the time of manufacturing on the circuit board.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a structure for protecting components on a circuit board according to the present invention.

FIG. 2 is an exploded perspective view showing a state in which a laminate for protecting components on the circuit board is erected on the circuit board.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 circuit board 1 a insertion hole 2 component 3 laminated board 3 a leg 3 b lower end

Claims (3)

[Claims] A protection structure for a component on a circuit board for securing creepage distance and preventing falling of a component such as a capacitor installed on the circuit board, wherein the component is provided on the circuit board. A fitting hole is formed in the vicinity, and a leg of a laminate for securing the creepage distance of the component and preventing the component from falling down is fitted into the fitting hole, and the laminate is placed on the circuit board. A component protection structure on a circuit board, wherein the component protection structure is set up near a component. 2. The laminated plate according to claim 1, wherein the lower ends of the legs are formed in a wedge shape or a key shape, and the lower ends are fitted and locked in the fitting holes of the circuit board. The protection structure for a component on a circuit board according to claim 1. 3. The circuit board according to claim 1, wherein said laminated board is formed by an excess portion of the circuit board when the circuit board is manufactured.
Or a protection structure for a component on a circuit board according to any one of the above.