JPH03149929A - Interception preventing device - Google Patents

Abstract

PURPOSE:To save man-hour of assembling by preparing two terminals fixed tentatively to a housing as a semi-product, then fitting and inserting the housing to a printed circuit board. CONSTITUTION:A housing 8 has a structure to tentatively fix terminals 7a, 7b and the terminals 7a, 7b are fixed to the housing as a semiproduct and the housing is inserted onto a printed circuit board 1. The housing 8 is provided with a hook 9, which is fitted to a hole of the printed circuit board so as to be fixed tentatively and the hook 9 is soldered together with other electric components in such a state by an automatic solder dip device. Then the printed circuit board 1 is mounted to a chassis 3 and a connecting metallic fixture 4 is fitted to a cabinet 5 by using a screw 6. Then the prepared cabinet 5 is covered to the chassis 3 to press the terminals 7a, 7b with the connection metallic fixture 4 in the direction of the arrow, and since the terminals 7a, 7b are deformed, sure connection is attained by the elastic performance. Thus, the assembling is facilitated.

Description

[Detailed description of the invention] Industrial applications The present invention uses CIIV (by coaxial cable, etc.).

System that sends audio/video signals) or paid broadcasting such as hotel system? The present invention relates to an eavesdropping prevention device in a terminal electronic device for receiving data.

2. Description of the Related Art In recent years, with the development of hotel systems and hotel systems in Japan and other countries, wiretapping has become more common in terminal electronic devices. Therefore, it has become a constant feature in today's terminal electronic devices to make them difficult to eavesdrop by providing a mechanism to make the internal functions of the terminal electronic devices difficult to decipher.

Hereinafter, a conventional eavesdropping prevention device will be explained with reference to the drawings.

4 and 5 show a conventional eavesdropping prevention device. FIG. 4 is an exploded view showing the entire assembled configuration, and FIG. 5 is an exploded view showing the entire assembled configuration. In Figures 4 and 6,
1 is a printed wiring board equipped with electronic circuit parts, power supply circuit parts, etc. 21L and 2b can function as an electronic device when connected, and do not function when disconnected. The solder is welded to the steel foil of the printed wiring board on which an electronic circuit is constructed, and 3 is a chassis for mounting and fixing the printed circuit board 1 and the like.

4 is solder 21L and 2bf: connection fittings for connection,
6 is a cabinet that protects the inside; 6 is a screw for attaching the connecting fitting 4 to the cabinet 6; and 7 is a screw for attaching the cabinet 6 to the chassis 3.

The operation of the conventional eavesdropping prevention device configured as described above will be described below.

First, solders 2a and 2b are welded to the copper foil of a printed wiring board, and the solders 2a and 2b are fixed to the chassis 3.

Next, heat the connection fitting 4f to the cabinet 5 using the screw 6. By placing the prepared cabinet 61 over the chassis 3, the solders 21L and 2b lightly contact the connecting fittings 4 and are lightly connected.
The function as an electronic S device can be maintained by making a reliable connection by fitting.

Problems to be Solved by the Invention However, with the above configuration, there is concern about the reliability of the connection due to deformation of the printed wiring board due to heat, loosening of screws, etc. It is necessary to carry out the work in such a way that there will be no variation in height.

The workability was poor and many man-hours were required.

In view of the above-mentioned problems, the present invention provides an eavesdropping prevention device that improves connection reliability and workability, and can significantly reduce the number of assembly steps.

Means for Solving the Problems To achieve this object, the eavesdropping prevention device of the present invention includes two spring terminals arranged adjacently on a printed wiring board and a cabinet for connecting them. Function of the device composed of the attached connecting fittings Due to the spring nature of the two terminals, the connection will not come off even if the connecting fittings are slightly moved up and down, so there is no need for tightening with screws. In addition, there is no need to solder the copper foil on the printed wiring board, and all you have to do is insert the two terminals into the printed wiring board, and the automatic solder dipping device will solder them together with the other electrical parts. This means that you can do it.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

Figures 1a and 1b are a front view and a side view of FRFit, an anti-wiretapping device according to an embodiment of the present invention. In Fig. 1, 1 is a printed wiring board, 3 is a shear 7,
4 is a connection fitting, and 6 is a cabinet.

6 is a screw, and the above is the same as the configuration of the conventional example shown in Figs. A printed wiring board with an electronic circuit configured so that the function does not work when the terminal is soldered to the terminal with spring properties, 8 is a printed wiring board made by combining 71L and 7b as one semi-finished product. Differential stick etc. to facilitate insertion of KJ:! ) is a molded housing.

As above 1! About the anti-wiretapping device that was created. The operation will be explained below.

First, the housing 8 has a structure in which the terminals T& and Tbi can be temporarily fixed.Put the terminals 7 and 71) together as a semi-finished product and insert it into a glint wiring board. A hook 9 is provided on the housing 8, which is fitted into a hole in the glint wiring board to be temporarily fixed, and in this state, soldering is performed with the automatic soldering device 1 together with the electrical parts of the board. Next, the printed wiring board wi1 is attached and fixed to the chassis 3, and the connecting fitting 4 is attached to the screw s of the cabinet 5 xg. And 6 tons of prepared cabinets
- By covering the chassis 3, the terminals T & and rb
is pressed in the direction of the arrow in FIG. 3 by the connecting fitting 4, and the terminals 71L and 71) are deformed, so that a reliable connection is made due to their spring properties, and the function as an electronic device can be maintained.

Effects of the Invention As described above, according to the present invention, two terminals are prepared as semi-finished products using a housing, and by fitting and inserting them into a printed wiring board, no floating or tilting occurs, so an automatic solder dipping device can be used. The number of man-hours required for soldering is reduced, and the reliability of the connection between the two terminals is extremely high. Furthermore, the spring nature of the two terminals eliminates the need for tightening with screws, further reducing the number of man-hours and greatly improving mass productivity.

[Brief explanation of the drawing]

5g1 Figures a and b are front and side views showing the configuration of the main parts in one embodiment, Figure 2 is a perspective view showing the appearance of the terminal electronic unit 1 common to the conventional example and the embodiment, and Figure ga3 is one implementation. FIG. 4 is an exploded side view showing the assembled structure of the main parts in the conventional example; FIG. 6 is an exploded side view showing the assembled structure of the main parts of the conventional example;
The figure is a side view showing the configuration of the main parts of a conventional example. 71L, F b - - - One terminal, 8 - - Housing. Name of agent For patent attorney Shigetaka Awano 4 or 1 person 1
rA! / , I, -, 1/, 2nd mouth 1g 4 wards [・Fig.

Claims (1)

[Claims] In electronic equipment that has a structure in which the printed wiring board is fixed to the chassis and the interior is protected by covering it with a cabinet, two spring terminals are placed adjacent to each other on the printed wiring board, and the terminals are positioned opposite to each other. By attaching the connecting fittings to the cabinet, the adjacent terminals are connected, and when the cabinet is removed, the adjacent terminals are disconnected and the adjacent terminals are disconnected so that the electronic device no longer functions. An eavesdropping prevention device characterized in that the wiretapping prevention device is configured such that a terminal connected to the wire has a function as an electronic circuit.