Electricity: conductors and insulators – Insulators – With terminal elements
Reexamination Certificate
1999-12-27
2001-10-23
Reichard, Dean A. (Department: 2831)
Electricity: conductors and insulators
Insulators
With terminal elements
C174S167000, C174S168000, C174S180000, C174S197000, C361S668000, C361S671000
Reexamination Certificate
active
06307158
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a clip structure for measurement, and particularly to a clip structure which can easily extract electric signals from circuit portions of electronic/electrical apparatus when such apparatus is subjected to inspection, adjustment, repair, etc.
Recently, as integration and sensitivity are improved in electronic/electrical apparatus, there are proposed various clip structures for extracting electric signals for measurement from circuit portions of such apparatus when the apparatus is subjected to inspection, adjustment, repair, and so on.
However, such a clip structure for extracting electric signals has problems as follows. Since a cylindrical member provided at a front end of a base member and a pin member disposed in a lower portion of the base member are connected to each other through a conductor, the resistance appearing here becomes large, and measured values are not stable so that reliable results of measurement cannot be obtained. Further, since the clip per se is very small, the clip has a difficulty in handling.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to solve the foregoing problems, and to provide a clip structure for extracting electric signals for measurement, which is improved in accuracy and reliability in measured values, and which can be handled easily and conveniently.
In order to achieve the above object, according to an aspect of the present invention, there is provided a clip structure for extracting electric signals, which comprises: a nonconductive and hollow base member; a nonconductive operating member rotatably supported in the base member so that one end of the operating member projects out from the base member, the operating member being urged in a return direction by an urging force applied thereto; a conductive cylindrical member provided at a front end of the base member so as to project straight; conductive elastic wires stored in the cylindrical member, the wires having front portions provided with grip portions and having rear portions fixed to a lower portion of the operating member, the grip portions being configured to be able to project from a front end of the cylindrical member when the operating member is pushed against the urging force and rotated; a conductive contact pin member disposed at a lower portion inside the base member, one end of the contact pin member being engaged with a rear end of the cylindrical member, the other end of the contact pin member being projected out from the base member, an engagement portion between the one end of the contact pin member and the rear end of the cylindrical member being connected by welding means such as soldering or the like; and a core material such as steel inserted into the contact pin member.
REFERENCES:
patent: 3616066 (1971-10-01), Rainey
patent: 5484305 (1996-01-01), Diniz et al.
Kashima Isao
Kashima Rumiko
Mechano Electronic, Inc.
Oliff & Berridge PLC.
Reichard Dean A.
Walkenhorst W. David
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