JPH0541200U - Structure of shield plate - Google Patents

Abstract

(57) [Abstract] [Purpose] In the structure of the radio wave and magnetic shield on the printed wiring board, the cost is reduced by reducing the number of parts and facilitating the installation work without impairing serviceability. The purpose is to [Structure] The component mounting surface side and the soldering surface side shield plate of the printed wiring board are integrally formed, and are fixed to the shield case by snap fit.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a shield plate for a printed wiring board in household electric appliances such as VTRs, TVs and audio products.

[0002]

[Prior Art]

 FIG. 3 is a perspective view showing an example of the structure of a conventional shield plate seen from the soldering surface side, and FIG. 4 is a sectional side view. In the figure, 1 is a printed wiring board, 2 is a shield plate attached by soldering to the soldering surface side of the printed wiring board 1, and 3 is a shield case also attached by soldering to the printed wiring board 1, Reference numeral 4 denotes a shield cover attached to the shield case by a snap fit.

The shield plate 2, the shield case 3, and the shield cover 4 shield the electric parts 5 in the shield case 3 from the outside in terms of radio waves. In addition, the shield cover 4 is not integrated with the shield case 3 in consideration of serviceability such as repair and replacement of electric parts in the shield case 3.

[0004]

[Problems to be solved by the device]

 Since the conventional shield structure for electromagnetic interference on a printed wiring board is configured as described above, the shield plate and cover must be separate parts, and the shield plate must not be soldered during installation. There was a problem that it was necessary and increased the cost.

The present invention has been made to solve the above-mentioned problems. The shield plate and the shield case can be made into an integral part, and the cost can be reduced by eliminating the soldering work at the time of attaching the shield plate. The purpose is to achieve.

[0006]

[Means for Solving the Problems]

 The structure of the shield plate according to the present invention is one in which the shield plate and the shield cover are integrated.

[0007]

[Action]

 In the structure of the shield plate according to the present invention, the number of parts can be reduced and the cost can be reduced by integrating the shield plate and the shield cover. Also, the soldering work for attaching the shield plate 0 is not necessary.

[0008]

【Example】

 Example 1. An embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is a perspective view of the printed wiring board seen from the component mounting surface side. 1 is a printed wiring board, 3 is a shield case attached to the component mounting surface side of the printed wiring board 1 by soldering, 3-a. , 3-b are flaps formed integrally with the shield case 3, 3-c are stoppers also formed integrally with the shield case 3, 6 is a shield cover, 6-a is a hole that fits into the stopper 3-c Is. 2 is a perspective view of an embodiment of the present invention viewed from the soldering surface side of a printed wiring board, 1 is a printed wiring board, 3-d is a foot portion integrally formed with the shield case 3, 6 Is a shield cover, and 6-b is a hook fitted to the shield case foot 3-d.

Next, the operation will be described. As shown in FIG. 1, the shield case 3 attached to the component mounting surface side of the printed wiring board 1 is mounted by sliding the shield cover 6 covering the component mounting surface side and the soldering surface side from the end surface of the printed wiring board 1. .. At this time, the shield cover 6 is sandwiched by the flaps 3-a and 3-b of the shield case 3, and the hole 6-a is fitted in the stopper 3-c, so that the component mounting surface side of the shield cover 6 is It is fixed to the shield case 3. On the other hand, on the soldering side, as shown in FIG. 2, the hook 6-b of the shield cover 6 is fitted and fixed in the hole of the foot portion 3-d of the shield case 3.

[0010]

[Effect of the device]

 As described above, according to the present invention, the conventional shield cover and shield plate are integrally configured, so the number of parts is reduced, and soldering when mounting the shield plate is not necessary, so the shield structure is inexpensive. There is an effect that can be.

[Brief description of drawings]

FIG. 1 is a perspective view of a structure of a shield plate according to an embodiment of the present invention as viewed from a component mounting surface side of a printed wiring board.

FIG. 2 is a perspective view of the structure of a shield plate according to an embodiment of the present invention as seen from the soldering surface side of a printed wiring board.

FIG. 3 is a perspective view of a conventional shield plate structure viewed from the soldering surface side of a printed wiring board.

FIG. 4 is a side sectional view of a conventional shield plate structure.

[Explanation of symbols]

 1 printed wiring board 2 shield plate in the conventional shield board structure 3 shield case 3-a flap integrally formed on the shield case 3-b flap integrally formed on the shield case 3-c integrally formed on the shield case Stopper 3-d Foot part integrally formed with the shield case 4 Shield cover in the conventional shield plate structure 5 Electrical components that require a shield 6 Shield cover according to the present invention 6-a Fitting hole formed in the shield cover 6 -b Hook formed integrally with the shield cover

Claims (1)

[Scope of utility model registration request] 1. The present invention relates to a box-shaped shield case body attached to a printed wiring board, and a shield cover integrally formed with a shield plate for closing an opening of the shield case body and a shield plate for shielding the opposite side of the printed wiring board. The shield plate structure is characterized in that the shield cover is mounted by sliding it from the end surface of the printed wiring board.