JPS6479614A - Encoder apparatus - Google Patents

Encoder apparatus

Info

Publication number
JPS6479614A
JPS6479614A JP23635287A JP23635287A JPS6479614A JP S6479614 A JPS6479614 A JP S6479614A JP 23635287 A JP23635287 A JP 23635287A JP 23635287 A JP23635287 A JP 23635287A JP S6479614 A JPS6479614 A JP S6479614A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
elements
tooth
magnetic
gear
substrate
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
JP23635287A
Inventor
Shigeru Ogino
Original Assignee
Canon Kk
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

Links

Abstract

PURPOSE:To obtain an encoder apparatus having high resolving power, by arranging magnetoresistance effect elements at intervals divided so as to become finer than those of tooth-shaped projections. CONSTITUTION:A substrate for magnetoresistance effect elements 4 and a bias magnet 3 for generating a definite line of magnetic force are fixed and arranged at the position opposed to the outer peripheral surface formed by the tooth tip circle of the gear 1 made of a magnetic body having tooth forms 1A formed thereto at a predetermined pitch P. The substrate 2 is boned to the magnet 3, and a large number of the elements 4 and the conductors 5 connecting them in series are formed on the substrate 2. Therefore, a large number of the elements 4 can be placed in the magnetic flux of one magnet 3. By this constitution, when the gear 3 is rotated, magnetic flux is changed and the resistance values generated in the elements 4 are changed. Therefore, when (n) elements are arranged at the pitch P corresponding to the tooth forms A, (n) output changes are obtained with respect to one tooth of the gear 1 and the output change nZ is obtained with respect to the number (Z) of teeth by one revolution of the gear.
JP23635287A 1987-09-22 1987-09-22 Encoder apparatus Pending JPS6479614A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23635287A JPS6479614A (en) 1987-09-22 1987-09-22 Encoder apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23635287A JPS6479614A (en) 1987-09-22 1987-09-22 Encoder apparatus

Publications (1)

Publication Number Publication Date
JPS6479614A true true JPS6479614A (en) 1989-03-24

Family

ID=16999532

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23635287A Pending JPS6479614A (en) 1987-09-22 1987-09-22 Encoder apparatus

Country Status (1)

Country Link
JP (1) JPS6479614A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5729127A (en) * 1994-09-13 1998-03-17 Nippondenso Co., Ltd. Magnetism detecting apparatus having gear teeth dimensions for minimal pulse signal distortion
JP2009168679A (en) * 2008-01-17 2009-07-30 Denso Corp Rotation detector
JP2016095200A (en) * 2014-11-13 2016-05-26 株式会社カワデン Electric actuator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5729127A (en) * 1994-09-13 1998-03-17 Nippondenso Co., Ltd. Magnetism detecting apparatus having gear teeth dimensions for minimal pulse signal distortion
JP2009168679A (en) * 2008-01-17 2009-07-30 Denso Corp Rotation detector
JP2016095200A (en) * 2014-11-13 2016-05-26 株式会社カワデン Electric actuator

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