JPS5667710A - Position detector - Google Patents

Position detector

Info

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
Application number
JP14363979A
Other languages
Japanese (ja)
Inventor
Katsushi Nishimoto
Takashi Uchiyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP14363979A priority Critical patent/JPS5667710A/en
Publication of JPS5667710A publication Critical patent/JPS5667710A/en
Pending legal-status Critical Current

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
JP14363979A 1979-11-06 1979-11-06 Position detector Pending JPS5667710A (en)

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)

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