| 摘要 |
PROBLEM TO BE SOLVED: To prevent falling from the body of a probe in a portable radiation- measuring instrument where a probe can be attached to or detached from the body. SOLUTION: A slide holder 100 is fixed to the body of a radiation-measuring instrument. The upper surface of a slider 200 is applied and fixed to the side surface of a probe. One end of a lock member 110 of the slide holder 100 is provided with a lock nib part 114 and a rock cancellation button 116a, and the other end is connected to a spring 118 that is connected to a mounting base part 104. The rock member 110 is supported rotatably by a shaft being extended from the mounting base 104. When the slider 200 is inserted into the slide holder 100 until a stopper 204 hits against an insertion end 102c, the lock member 110 is rotated in the direction of an arrow B due to the energization force of the spring 118, and a lock nib 114 reaches a position for blocking the traveling path of the slider 200. In this state, the slider 200 cannot be pulled out of the slide holder 100.
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