Microcontactor probe assembly having a plunger and electric probe module using the same
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Accused Products
Abstract
In order for a conduction path to have a reduced number of sliding portions for conduction, without increase in inductance nor resistance, thereby permitting an enhanced accuracy of inspection, a pair of plungers (3, 4) biased in opposite directions by a coil spring (2), to be electrically connected to a wiring plate (10), have electrical connections in which, in a tubular portion (15) as a tight wound spiral portion (15a) fixed on one plunger (4) to allow linear flow of electrical signal, the other plunger (3) is brought into slidable contact.
19 Citations
23 Claims
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1-13. -13. (canceled)
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14. A microcontactor probe comprising:
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an insulator formed with a support hole; a lead conductor exposed inside the support hole; and a resilient conductive assembly fitted in the support hole and kept from falling, the conductive assembly compirsing; a first plunger adapted to be exposed outside the support hole; a second plunger adapted to contact the lead conductor; and a coil spring biasing the first and second plungers in opposite directions, the coil spring having a tubular tight wound portion, the tight wound portion comprising; a sliding conduction part configured for one of the first and second plungers to slidably contact thereon for electrical conduction; and a fixed conduction part configured for the other of the first and second plungers to be fixed thereto for electrical conduction. - View Dependent Claims (15, 16, 17, 18)
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19. An electric probe module comprising:
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an insulator formed with a support hole; and a resilient conductive assembly fitted in the support hole and kept from falling, the conductive assembly comprising; a first plunger adapted to be exposed at an end of the support hole; a second plunger facing another end of the support hole; and a coil spring biasing the first and second plungers in opposite directions, the coil spring having a tubular tight wound portion, the tight wound portion comprising; a sliding conduction part configured for one of the first and second plungers to slidably contact thereon for electrical conduction; and a fixed conduction part configured for the other of the first and second plungers to be fixed thereto for electrical conduction. - View Dependent Claims (20, 21, 22, 23)
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Specification