| 摘要 |
PROBLEM TO BE SOLVED: To shorten time for a plugging and unplugging test. SOLUTION: A pair of test piece holders 3 and 4 is arranged on linear guides 5 and 6 so they can mutually approach and separate on one straight line. Since a screw rod 7 screwed to the holder 3 is a right handed screw, a screw rod 8 screwed to the holder 4 is a left handed screw, and both are united by a coupling tool 11, by normally and reversely rotating a motor 9, test pieces S1 and S2 are synchronously driven in opposite directions and a plugging and unplugging portion is plugged and unplugged. Since a driven relative speed of the test pieces is doubled in comparison with immovably fixing the test piece S2, the test time is reduced by half.
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