| 摘要 |
PROBLEM TO BE SOLVED: To press the key of a portable telephone without affecting electromagnetic waves inside a radio wave dark room. SOLUTION: A portable telephone 5 is fixed inside a case 4 and an air tube 3 is fixed to the hole of a plate 2 fixed to the case 4. A key pressing block 1 is slidably attached to the tip part of the air tube 3 and is arranged right above a key 5a. When air is supplied from the air tube 3, the key pressing block 1 is moved downwards and the key 5a is kept in a pressed state. When air supply is stopped, the key 5a returns to an original state. The key pressing block 1, the plate 2, the air tube 3 and the case 4 are constituted of a resin material without affecting electromagnetic waves. |
