| 摘要 |
The present invention includes: housing (7) which has opening (8); protective panel (11) which is arranged in housing (7) and which closes opening (8); O ring (12) which is arranged on one face of protective panel (11) in a direction perpendicular to an opening plane of opening (8); sliding plate (13) which is arranged on the other face of protective panel (11) in a direction perpendicular to the opening plane of opening (8) and which holds protective panel (11) in such a way that protective panel (11) can slide in a direction parallel to the opening plane of opening (8); and spring member (14) which is arranged in the state of making contact with an end portion of protective panel (11) and which supports protective panel (11) in such a way that protective panel (11) can be displaced in a direction parallel to the opening plane of opening (8). Protective panel (11) is supported by housing (7) in the state in which protective panel (11) is sandwiched between O ring (12) and sliding plate (13). |
