PURPOSE: To facilitate opening and closing and enable electromagnetic wave shielding between a door and a door frame easily and positively by comparatively simple structure.
CONSTITUTION: A shielding door 4 is hung to the upper frame 1 of an entrance A in a freely travelling manner, and contactors mutually connected under the state, in which the shielding door 4 is closed, electrically are mounted continuously in the circumferential directions of the entrance A and the shielding door 4 respectively to the peripheral section of the entrance A and the peripheral section of the shielding door 4. Pushers 11 pushing the peripheral section of the shielding door 4 by rotating pushing cams 12 are set up so that the contactors are mutually connected electrically into the upper and lower frames 1, 2 and left and right vertical frames 3, 3 of the entrance A.
| JP2744153 | DOOR SYSTEM |
ISOTANI HISANORI
SUZUKI MOTOO
ITO TAKESHI
TOMOE CORP
| JPS5637681U | 1981-04-09 | |||
| JPH0282095U | 1990-06-25 |