JPS5667710A - Position detector - Google Patents
Position detectorInfo
- Publication number
- JPS5667710A JPS5667710A JP14363979A JP14363979A JPS5667710A JP S5667710 A JPS5667710 A JP S5667710A JP 14363979 A JP14363979 A JP 14363979A JP 14363979 A JP14363979 A JP 14363979A JP S5667710 A JPS5667710 A JP S5667710A
- Authority
- JP
- Japan
- Prior art keywords
- rotating disk
- home position
- detect
- detecting
- reflecting surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
PURPOSE: To permit a position detector to be more compact by detecting the home position and the marginal point of movement by using sensors each facing to one rotating disk having a given shape, and permitting the sensor for detecting the home position to detect the rotation direction simultaneously.
CONSTITUTION: On a rotating shaft 1, a rotating disk 2 for detecting the home position and the marginal point of movement is attached. The rotating disk 2 comprises a combination of two circular arcs having different radiuses in order to provide step parts, e.g., one for 180 degrees, one step-part being formed into a straight taper 5 and the other step-part being provided with a reflecting surface 6. The aluminium rotating disk 2 can be all coated with black alumite except the reflecting surface 6. Facing to the reflecting surface 6, a photosensor 4 is provided to detect the marginal point of movement. A gap sensor 3 is provided facing to the periphery of the rotating disk 2 to detect the zero cross point (B) of three points A, B and C on the straight tapered part 5, from which the home position is made known, and from the positive or negative level the lateral rotation direction can be known. This permits the detector to be more compact.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14363979A JPS5667710A (en) | 1979-11-06 | 1979-11-06 | Position detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14363979A JPS5667710A (en) | 1979-11-06 | 1979-11-06 | Position detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5667710A true JPS5667710A (en) | 1981-06-08 |
Family
ID=15343439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14363979A Pending JPS5667710A (en) | 1979-11-06 | 1979-11-06 | Position detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5667710A (en) |
-
1979
- 1979-11-06 JP JP14363979A patent/JPS5667710A/en active Pending
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