Title:
ORIGIN POSITION DETECTING DEVICE FOR SUNLIGHT INTAKE DEVICE
Document Type and Number:
Japanese Patent JP3619615
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the engagement of an origin switch with an origin dock from 'sliding' to 'rolling' and to reduce the torque of the motor of a rotation driving device by providing the origin switch with a roller type actuator part.
SOLUTION: The device includes the origin dock 11 arranged at the reference position of the outer periphery part of a rotating ring 2 integrated with a lighting prism 1 being the origin of the prism 1, and the origin switch 20 actuated by the dock 11 on the rotational locus of the ring 2. The actuator part 20a of the switch 20 is made of stainless steel sheet and a roller type switch where two roller parts 20b are attached to its tip so as to possess an axial line perpendicular to the rotational plane of the ring 2. As the ring 2 is rotated, the roller part 20b is rolled along the cam surface 11b of the dock 11 and the switch 20 outputs an on-off signal, so that pressing force as reaction acting on the dock 11 is made small.
Inventors:
Kiyoto Kobayashi
Kazuzo Yamada
Fujimoto
Kazuzo Yamada
Fujimoto
Application Number:
JP18697896A
Publication Date:
February 09, 2005
Filing Date:
June 28, 1996
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
G02B27/00; F21S11/00; F24S50/20; (IPC1-7): G02B27/00; F21S11/00; F24J2/38
Domestic Patent References:
| JP777664A | ||||
| JP6313835A | ||||
| JP845313A | ||||
| JP667079A |
Attorney, Agent or Firm:
Haruya Saito