JPS5658754A - Rotation detection device for motor - Google Patents

Rotation detection device for motor

Info

Publication number
JPS5658754A
JPS5658754A JP13403079A JP13403079A JPS5658754A JP S5658754 A JPS5658754 A JP S5658754A JP 13403079 A JP13403079 A JP 13403079A JP 13403079 A JP13403079 A JP 13403079A JP S5658754 A JPS5658754 A JP S5658754A
Authority
JP
Japan
Prior art keywords
light
rotor
driving coil
detecting
luminiscent
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
JP13403079A
Other languages
Japanese (ja)
Inventor
Daizaburo Kubota
Hiroaki Takase
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP13403079A priority Critical patent/JPS5658754A/en
Publication of JPS5658754A publication Critical patent/JPS5658754A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H02K11/22—Optical devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)

Abstract

PURPOSE:To prevent the motor from becoming large-sized by providing a light and shade contrast striped part on a stator side end surface of a rotor and installing a luminiscent element and a light-receiving element on a stator base plate so that a reflective light from rotor can be detected, with the formation of detecting part consisting of the minimum number of parts. CONSTITUTION:A rotor composed of a flywheel 5 and a permanent magnet 6 is installed on a rotary shaft 7 and its upper part is supported by bearings 3 and 4 pressed into a boss 2 with its lower part being supported by bearings 3 and 4 opposed to driving coil (10a, 10b). Surface on the side of driving coil 10 for permanent magmet 6 is painted with an alternation of a colored part 12a and a white part 12b. At the same time, luminiscent element and light-receiving element are provided in the clearance of a driving coil 10 on a base plate 9. In this way, the rotating condition of the rotor is detected by detecting reflective light from a permanent magnet 6. Thus it is possible to form a detecting part with the minimum number of parts and eliminate noises because of magnetic induction effect is not utilized.
JP13403079A 1979-10-16 1979-10-16 Rotation detection device for motor Pending JPS5658754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13403079A JPS5658754A (en) 1979-10-16 1979-10-16 Rotation detection device for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13403079A JPS5658754A (en) 1979-10-16 1979-10-16 Rotation detection device for motor

Publications (1)

Publication Number Publication Date
JPS5658754A true JPS5658754A (en) 1981-05-21

Family

ID=15118728

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13403079A Pending JPS5658754A (en) 1979-10-16 1979-10-16 Rotation detection device for motor

Country Status (1)

Country Link
JP (1) JPS5658754A (en)

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