| 摘要 |
PROBLEM TO BE SOLVED: To provide a probe allowing contact continuity between a tube 10 and a plunger 22 to be relatively stably maintained. SOLUTION: The inside surface of the tube 10 is formed into a cross-sectionally circular; bias force in a direction crossing an axial direction is applied to a plunger 22 by making its rear end face 22c oblique with respect to the axial direction; and a flat surface 22d is formed on the side abutting, by the bias force, on the inside surface of the tube 10 of the circumferential surface of a sliding part 22b of the plunger 22, whereby its cross section is formed into a partially-cut-out circular shape. Two points P1 and P2 of both side edges of a flat surface 22d of the sliding part 22c of the plunger 22 are made to contact the inside surface of the tube 10; and even if the contact is cut by catching a foreign substance in one-side part to be abutted, contact can be kept for the other-side part to be abutted. Thereby, stable electrical continuity can be provided by the two abutting parts. COPYRIGHT: (C)2006,JPO&NCIPI
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