JPH073667Y2 - Printed circuit board reinforcement structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a printed circuit board reinforcing structure for a flyback transformer mounting portion of a television receiver.

[Conventional technology]

Conventionally, as described in Japanese Utility Model Laid-Open No. 63-73985, a reinforcing member having an opening at a mounting portion of a flyback transformer of a printed circuit board and having the same height as the space bottom of a cabinet where the printed circuit board is installed. It was a structure to intervene.

[Problems to be solved by the device]

The above-mentioned prior art has not taken into consideration the decrease in strength and cost due to the component mounting holes, the cracking of the printed circuit board due to the push-up from the bottom of the cabinet, and the flicker of the flyback transformer.

The purpose of the present invention is to provide a printed circuit board reinforcement structure in which the weight of the flyback transformer as well as the thrust from the bottom of the cabinet is not transmitted to the printed circuit board without making holes for mounting components, and prevents the flyback transformer from flicker. To do.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, a reinforcing component having a cantilever-shaped supporting portion having a gap between the printed circuit board pattern surface side and a cabinet bottom surface on which the printed circuit board is installed has a supporting portion that is a flyback. The transformer mounting portion is located directly below the printed circuit board, and is mounted in such a manner that it is sandwiched between the rivet and the fitting claw by utilizing the elasticity of the flyback transformer temporary fixing claw and the rivet.

[Action]

Since the reinforcing parts are attached by sandwiching them with the flyback transformer temporary fixing mating claws and rivets, it is not necessary to provide mounting holes in the printed circuit board, and mounting is done by utilizing the elasticity of the rivets and the mating claws. Since it is expanded, it is possible to prevent the mounting portion from flicker due to the vibration of the flyback transformer.

Further, since the supporting portion provided on the reinforcing component has a cantilever shape having a gap between the printed circuit board and the cabinet bottom portion on which the printed circuit board is installed, the cushioning effect of the cantilever beam causes the flyback transformer to move. It is possible to prevent the substrate from cracking due to weight and pushing up from the bottom of the cabinet.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is a sectional view of the essential parts of the present invention.

The printed circuit board 3 is attached to the rail 2 provided in the cabinet 1. The flyback transformer 4 has a fitting claw 4a and a rivet 5 which are integrally formed together and is temporarily fixed to the printed circuit board, and then leads are soldered. The reinforcing component 6 is attached between the fitting claw 4a and the rivet 5 so as to be sandwiched by utilizing elastic deformation. The reinforcing component 6 is composed of a cantilever-shaped support portion 6a and a mounting portion 6b having a gap between the printed circuit board 3 and the bottom of the cabinet 1.

In the above system, when a downward force is applied to the flyback transformer 4, the printed circuit board 3 bends so that the supporting portion 6a of the reinforcing component comes into contact with the bottom surface of the cabinet 1 and
The portion 6a is also deflected to hit and support the portion directly below the flyback transformer 4 of the printed circuit board 3 to prevent further deflection. In this way, the cushioning effect due to the deflection of the supporting portion 6a and the deflection of the printed circuit board 3 due to the width dimension of the supporting portion 6a are suppressed, and the reinforcing component 6 is attached to the printed circuit board 3 without providing the mounting hole in the printed circuit board 3. Since an unnecessary force is not applied to the printed circuit board 3, the printed circuit board 3 can be prevented from cracking.

Even when the bottom surface of the cabinet 1 is pushed up, since a gap is provided above and below the supporting portion 6a of the reinforcing component 6, it is difficult to apply an excessive force to the printed circuit board 3 and cracking can be prevented.

Since the reinforcing component 6 is attached using the fitting claw 4a of the flyback transformer 4 and the elasticity of the rivet 5, the fitting claw is
Since the mounting portion 6b of the reinforcing component 6 presses the 4a and the rivet 5 against the open end of the printed circuit board 3, there will be no flicker.

According to this embodiment, since the gap is provided between the support portion 6a of the reinforcing component 6 and the pattern surface of the printed circuit board 3, insulation failure due to pinching of solder scraps or the like does not occur.

[Effect of device]

Since the present invention is configured as described above, it has the following effects.

Since it is not necessary to provide a hole for mounting the reinforcing component on the printed circuit board, the cost can be reduced and the strength of the printed circuit board can be prevented from lowering. Further, since a gap is provided above and below the supporting portion of the reinforcing component, it is possible to prevent the substrate from cracking not only when a downward force is applied to the flyback transformer but also when the bottom surface of the cabinet is pushed up. Further, since the reinforcing component is attached by using the elasticity of the rivet and the fitting claw for temporarily fixing the flyback transformer, it is possible to prevent the attachment portion from flicker due to the vibration of the flyback transformer.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is a sectional view of an essential part of the embodiment of the present invention. 1 ... Cabinet, 2 ... Rail, 3 ... Printed circuit board, 4 ... Flyback transformer, 4a ... Fitting claw, 5 ...
… Rivets, 6 …… Reinforcing parts, 6a …… Supporting parts, 6b …… Mounting parts.

Claims (1)

[Scope of utility model registration request] 1. A reinforcing member is interposed between a printed circuit board on which a flyback transformer temporarily fixed by a fitting claw and a rivet is mounted and a cabinet bottom surface on which the printed circuit board is installed to reinforce the printed circuit board. In the structure, the reinforcing component is composed of a cantilever-shaped supporting portion having a gap between the printed circuit board and the bottom surface of the cabinet, and a mounting portion having a width dimension substantially the same as the distance between the fitting claw and the rivet. A printed circuit board reinforcing structure, characterized in that the reinforcing part is formed and is attached by inserting the attaching portion between the fitting claw and the rivet by utilizing elasticity.