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US 5,176,085 AGranted
Position detecting device
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsMasayoshi Hara, Hiroshi Kumatani, Takashi Nakamura
Life of this patent
Estimating the term…
Abstract
A position detecting device such as a needle position detecting device which detects a needle position with the aid of a rotor. In the position detecting device, the rotor and a position detecting annular member are abutted against each other, and thus the use of screws can be eliminated, and the annular member can be readily adjusted in angular position with a tool which is inserted through the holes of the rotor and engaged with the adjusting means of the annular member.
Claims27
A position detecting device comprising:
- a shaft;
- a support rotatably supporting said shaft;
- a rotor having at least one through-hole having a predetermined configuration which is cut parallel to the axis of said shaft, said rotor being fixedly mounted on said shaft so that said rotor is turned together with said shaft;
- an annular means mounted on said shaft in such a manner that said annular means is disposed between said support and said rotor, said annular means having pushing means provided on part of said annular means to push said annular means toward said rotor so that said annular means is rotated together with said rotor, position indicating means provided on part of said annular means to indicate a predetermined position of said annular means, and adjusting means for enabling the application of force through said at least one through-hole of said rotor to said annular means so as to turn said annular means with respect to said rotor;
- and
- detector means secured to said support, for detecting said position indicating means of said annular means which is rotating.
3 more elements
A position detecting device comprising:
- an annular means which is engaged with a rotor, said rotor being fixedly mounted on a shaft and having at least one through-hole having a predetermined configuration which is cut along the axis of said shaft and said annular means having position indicating means for generating a signal periodically in synchronization with the rotation of said shaft;
- detector means operative with respect to said annular means and having a predetermined space on a stationary side which is opposite to the side where said rotor is provided, to detect said position indicating means of said annular means;
- pushing means for pushing said annular means against said rotor;
- and
- adjusting means for enabling the application of force through said at least one through-hole of said rotor to said annular means pushed against said rotor, to adjust the position of said annular means relative to said rotor.
2 more elements
A position detector comprising:
- a shaft;
- a support for rotatably supporting said shaft;
- a rotor fixedly mounted on said shaft, said rotor having at least one through-hole with a predetermined configuration;
- a plurality of annular elements which are arranged between said support and said rotor, said annular elements are coaxial with said rotary shaft, an annular element on the rotor side being larger in diameter than an annular element on the support side;
- a slide board interposed between said annular elements so as to be nonturnable with respect to said rotor;
- pressing means for abutting said annular elements against said rotor so that said annular elements are rotatable together with said rotor, wherein said annular element on the rotor side has a position indicating portion which is not overlapped by said annular element on the support side, and said annular elements being turnable with respect to said rotor with a force applied through said at least one through-hole formed in said rotor;
- and a position detector unit fixedly mounted on said support for detection of angular positions of said annular elements.
4 more elements
A position detector comprising:
- a rotary shaft;
- a rotor fixedly provided on said rotary shaft, said rotor having a through-hole with a predetermined configuration in an axial direction of said shaft;
- a plurality of annular elements engaged with said rotor and arranged in an axial direction of said rotary shaft, said annular elements being larger in diameter toward a side of said rotor and provided with a position indicating portion for periodically indicating a signal in synchronism with rotation of said rotary shaft;
- detecting means for detecting said position indicating portion of said annular elements, said detecting means being faced with said annular elements with a predetermined gap on a stationary side opposite to the side of said rotor with respect to said annular elements;
- pressure means for pushing said annular elements toward said rotor to hold said annular elements in contact with said rotor;
- adjusting means for adjusting a position of said annular elements relative to said rotor by rotating said annular elements by application of an external force through said through-hole of said rotor due to an external force;
- an annular hole provided on an annular element which is located on the side of said rotor, said adjusting means passing through said annular hole;
- and
- a slide board nonturnably engaged with said rotor and interposed between said annular elements.
6 more elements
Dependencies are inferred from the claim text.