Patent ID: 6870364
Filing Date: 2005-03-22
Classification: G01D

Abstract:
1. A coupling structure for a non-contact type rotary sensor, comprising: a first stator having two magnet-facing sides which are disposed on a single arc and are spaced apart from each other; a second stator having one magnet-facing side which is disposed on said arc between said two magnet-facing sides of said first stator; a hall element disposed between said first stator and said second stator; a moving magnet disposed outside said arc; and a rotor having said moving magnet; wherein said rotor is provided with a fitting hole; wherein a rotating shaft is loosely fitted in said fitting hole of said rotor and is pierced by a pin, so that said rotating shaft contacts with said rotor and such that said rotating shaft is supported in said fitting hole by said pin so that said rotating shaft is swingable about said pin relative to said rotor; and wherein a clearance-maintaining member is disposed to maintain a constant distance between said moving magnet and said first and second stators.