Title:
ROTARY DOOR
Document Type and Number:
Japanese Patent JP3241315
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To transmit signals in a noncontact state by transmitting signals of sensors arranged in respective doors to an infrared ray receiver arranged in a fixing part from an infrared ray transmitter arranged in a rotary part.
SOLUTION: Safety sensors such as a starting sensor, a door sandwiching sensor and an approach sensor are arranged in plural doors installed in a radial shape on the outer periphery of a rotary shaft 1. Next, signal transmission cables 11 from the respective sensors are connected to a main body 14 by arranging an infrared ray transmitter (a) composed of an infrared ray emitting element 13 and a transmitter main body 14 on the upper end of the shaft 1. Next, an element 17 and the element 13 are opposed to each other by arranging an infrared ray receiver (b) composed of the infrared ray receiving element 17 and a receiver main body 18 on a ceiling surface. A control device 10 starts or stops a driving motor 9b according to a signal state of the respective sensors. Therefore, even a feeble signal can be stably transmitted since signals between the sensors and the control device can be transmitted in a noncontact system through infrared rays, and a cost can also be reduced since it becomes smaller than a slip ring type even if the sensor number increases.
Inventors:
Takashi Yoshida
Application Number:
JP35720197A
Publication Date:
December 25, 2001
Filing Date:
December 25, 1997
Export Citation:
Assignee:
Senzo Industry Co., Ltd.
International Classes:
E05F15/20; (IPC1-7): E05F15/20
Domestic Patent References:
| JP5149062A | ||||
| JP38992A | ||||
| JP8140156A |
Attorney, Agent or Firm:
Makio Chonan (1 person outside)