JPH04116474A - Plug-in type circuit test board - Google Patents

Abstract

PURPOSE:To reduce impedance of a ground and prevent noise between respective wiring of a circuit by forming a ground pattern part on an entire face and forming a circuit so that a contact is switched from the ground only at terminal plugs of wiring, etc. CONSTITUTION:A plug-in type circuit test board comprises a wiring/part terminal plug hole 1, a connection pattern part P, ground releasing/connecting metals 2, a ground pattern part 3, a ground conductor insulating part 4, an insulating part 5 and a chassis part 6 which are sequentially stacked from upward. When a lead 7 of a wire or a part terminal is inserted into the plug hole 1, the connection metal 2 which has been connected to the lower pattern part 3 jumps up and is switched to upward to be connected to the pattern part P forming a circuit. The pattern part P can be desirably modified depending on configuration of the test board. Thus all of the connection metals 2 other than the pattern part P are connected to the ground pattern part 3, so that it is possible to prevent noise and to reduce impedance at the ground pattern part 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a plug-in wiring type circuit test board, and more particularly to a plug-in wiring type circuit test board having a ground pattern portion on the entire surface.

[Conventional technology]

Conventional plug-in wiring type circuit test boards are constructed using plug-in holes and block socket fittings to easily fix wiring and components and form circuits, making it easy to change the plug-in wiring. can also be used.

[Problem to be solved by the invention]

Conventional plug-in wiring type circuit test boards are noise countermeasures.

As a measure against low impedance, it is difficult to provide ground wiring over the entire surface or to ground everything other than the wiring part because there is no connection pattern other than the connecting fittings other than the wiring part.

Therefore, it cannot be used when noise prevention and low impedance on the test circuit are required.

[Means to solve the problem]

The plug-in wiring type circuit test board according to the present invention includes a ground pattern portion on the entire surface and a plug-in connection fitting in which the contact is switched from the ground only in the portion into which wiring and component terminals are inserted to form a circuit.

〔Example〕

Next, the present invention will be explained with reference to the drawings. FIGS. 1A and 1B are a configuration diagram and an enlarged partial sectional view showing a first embodiment of the present invention.

The plug-in wiring type circuit test board has wiring component terminal insertion ports 1. Connection pattern part P, clamp open Connection fitting 2. Ground pattern section 3. Ground conductor separation insulator 4. It is constructed by stacking an insulating section 5 and a chassis section 6 in order from above.

Next, to explain the operation, wiring or component terminal glue -) wire 7
When inserted into the socket from above, the connecting fitting 2, which was connected to the ground pattern section 3 below, flips upward and is connected to the connecting fitting P, forming a circuit. The connection pattern portion P can be arbitrarily changed depending on the configuration of the test board.

All of the connection fittings 2 other than the connection wiring pattern P are connected to the ground pattern section 3, which has the effect of preventing noise and keeping the impedance of the ground pattern section 3 low.

FIG. 2 is an enlarged partial cross-sectional view of a second embodiment of the present invention.

The protruding part at the bottom of the separation insulating part 4 shown in Fig. 1 is removed, and a mesh-like ground pattern part 8 shown by hatching is placed in that part, and insulation with the metal fittings is ensured by the insulating pattern part 9 shown in Fig. 2. ing. The upper part from the isolation insulating part 4a is the first
Same as the figure.

The mesh-shaped ground pattern section 8 and the mesh-shaped insulating pattern section 9 are arranged in combination as shown in FIG. However, there is an advantage that the circuit wiring can be more reliably isolated from each other.

〔Effect of the invention〕

As explained above, the present invention has the effect of lowering the impedance of the ground and preventing noise between each wiring of the circuit by arranging the ground pattern portion over the entire plug-in wiring type circuit test board.

[Brief explanation of drawings]

FIGS. 1(a) and (b) are a block diagram and an enlarged partial cross-sectional view of the first embodiment of the present invention, FIG. 2 is an enlarged partial cross-sectional view of the second embodiment of the present invention, and FIG. FIG. 3 is a layout diagram of a ground pattern section and an insulating pattern section in FIG. 2; ]...Wiring 2 component terminal insertion port, 2...Ground opening/connection fitting, 3...Mesh-shaped ground pattern part,
4... Ground, conductor separation insulating part, 5... Insulating part,
6... Part of the chassis, 7... Wiring/component terminals, P.
・Connection pattern part between all the connecting parts, 8... Mesh-like ground pattern part, 9... Insulation pattern part, 10... Plate-like ground pattern part.

Claims (1)

[Claims] In a plug-in wiring type circuit test board for confirming and evaluating the operating characteristics of a circuit, there is a ground pattern formed on the entire surface except for the through holes, and a lead receptacle is provided in the insertion opening for external wiring or component terminals. When the terminal is not inserted, both ends are connected to the ground pattern part, and when the terminal is inserted, the end part springs up to the upper layer connection pattern part by insertion, forming a switching circuit. A plug-in wiring type circuit test board characterized by having: