JPH05145248A - Method of supporting printed board for electronic component - Google Patents

Abstract

PURPOSE:To improve the rigidity of a plastic casing by taking partial charge of tensile strength without flexural strength working on a printed for electronic components. CONSTITUTION:This is a method of supporting a printed board 2 for electronic components, which has holes for engagement at the periphery, with columns 4 which are provided at the bottom of a plastic 1 so as to engage, leaving slight spaces, with the holes. It can be lightened by the improvement of the rigidity of the casing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting a printed circuit board for electronic parts and a plastic housing, and more particularly to a method for connecting a plastic housing with improved rigidity.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, this type of joining method has used a method of fixing a printed circuit board 2 for electronic parts to a bottom plate of a plastic housing 1 with screws 7. However, as shown in FIG. 5, when a large load is applied to the center of the bottom plate of the plastic housing 1 for some reason, in this case, not only the plastic housing 1 but also the printed circuit board 2 for electronic parts receives bending force. To transform. For this reason, the bending force also acts on the electronic component (not shown in the figure) soldered to the electronic component printed circuit board 2 and there is a problem in strength.

[0003]

In the above prior art, when attempting to reduce the weight by reducing the wall thickness, the rigidity of the plastic housing is insufficient, and when a large load is applied to the center of the bottom plate of the plastic housing, the electronic There is a problem that the printed circuit board for parts may also be bent.

It is an object of the present invention to improve the rigidity of a plastic housing by sharing the tensile force without the bending force acting on the electronic component printed board.

[0005]

In order to achieve the above object, a fitting hole is formed around a printed circuit board for electronic parts, and a small gap is provided in the hole to fit a column in a plastic housing. Rigidly attached to the bottom plate. According to this configuration, the tensile force is shared by the printed circuit board for electronic parts, so that it is possible to prevent excessive deformation due to a decrease in rigidity due to the thickness reduction for the purpose of weight reduction of the plastic housing.

[0006]

As described with reference to FIG. 2, when the plastic casing 1 receives a large load in the center of the bottom plate for some reason, the plastic casing 1 is bent and deformed, and the column rigidly attached to the bottom plate of the plastic casing 1. 4 moves so that the distance of the tip becomes longer. At this time, when the electronic component printed circuit board 2 is fitted with a slight gap between the fitting hole 3 and the column 4 formed around the electronic component printed board 2, the tensile force is transmitted but the bending force is not transmitted. A tensile force is applied to the printed circuit board 2 for parts, the rigidity of the printed circuit board 2 for electronic parts suppresses the movement of the tip of the column 4, and the bending deformation of the plastic housing 1 is also suppressed. As a result, the plastic housing 1
The rigidity of is improved.

[0007]

<Embodiment 1> FIG. 1 is a perspective view showing an overall method of mounting a printed circuit board for electronic parts according to the present invention.
A column 4 in which a fitting hole 3 is formed around the electronic component printed circuit board 2 and fitted into the hole 3 with a slight gap.
Is rigidly attached to the bottom plate of the plastic housing 1. FIG. 2 is an explanatory view. When a large load is applied to the center of the bottom plate of the plastic housing 1, the plastic housing 1 is bent and deformed, but the printed circuit board 2 for an electronic component shares the tensile load, so that the plastic is plastic. It has been described that the rigidity of the housing 1 is improved.

<Embodiment 2> FIG. 3 is a second embodiment of the present invention, that is, instead of the fitting hole 3 of the electronic component printed circuit board 2 and the column 4 fitted into the hole 3, it is easily bent, FIG. 2 is a perspective view showing an overall method of supporting an electronic component printed circuit board in which a printed circuit board for electronic component 2 and a block 6 provided on a bottom plate of a plastic housing 1 are combined with each other using a tape 5 which is hard to expand and contract.

[0009]

According to the present invention, sufficient rigidity can be obtained even when the rigidity of the housing is reduced due to the thinning.

[Brief description of drawings]

FIG. 1 is a perspective view of a printed circuit board for electronic parts according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a function of a printed circuit board for electronic parts according to an embodiment of the present invention.

FIG. 3 is a perspective view of a printed circuit board for electronic parts according to another embodiment of the present invention.

FIG. 4 is a perspective view of a conventional printed circuit board for electronic parts.

FIG. 5 is an explanatory view of a conventional method for mounting a printed circuit board for electronic parts.

[Explanation of symbols]

1 ... Plastic housing, 2 ... Printed circuit board for electronic parts,
3 ... hole for fitting, 4 ... column, 5 ... tape, 6 ... block, 7 ... screw.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Nana Yoneda Machinery Research Institute, Hiritsu Manufacturing Co., Ltd.

Claims (2)

[Claims] 1. A printed circuit board for an electronic component having a hole for fitting in the periphery and a column for fitting with a slight clearance in the hole are provided on a bottom plate of a plastic housing. Printed circuit board support method. 2. A printed circuit board for an electronic component and a plastic according to claim 1, wherein instead of the fitting hole of the printed circuit board for an electronic component and the column fitted in the hole, a tape which is easily bent and does not easily expand and contract is used. A method of supporting a printed circuit board for an electronic component, which is combined with a block provided on a bottom plate of a housing.