JPS5480505A - Step motor - Google Patents

Step motor

Info

Publication number
JPS5480505A
JPS5480505A JP14817377A JP14817377A JPS5480505A JP S5480505 A JPS5480505 A JP S5480505A JP 14817377 A JP14817377 A JP 14817377A JP 14817377 A JP14817377 A JP 14817377A JP S5480505 A JPS5480505 A JP S5480505A
Authority
JP
Japan
Prior art keywords
comb
magnetic pole
shaped
magnetic
poles
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
JP14817377A
Other languages
Japanese (ja)
Inventor
Akimoto Watanabe
Shigeo Fukui
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14817377A priority Critical patent/JPS5480505A/en
Publication of JPS5480505A publication Critical patent/JPS5480505A/en
Pending legal-status Critical Current

Links

Landscapes

  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

PURPOSE: To reduce the size and increase the torque, by using a rotor having permanent magnets interposed between comb-shaped magnetic poles and by limiting the ratio of the axial length of the teeth of the comb-shaped materic poles to the axial distance between the butts of the comb-shaped magnetic ples facing each other within a specfic range.
CONSTITUTION: When the rotor 7 consits of four magnetic pole parts 20∼23 and a cylindrical non-magnetic member 24, the magnetic pole parts have comb- shaped magnetic poles 30∼37 and permanent magnet plates 40∼34. The comb- shaped magnetic poles 30, 31 of the magnetic pole part 20 sandwich the permanent magnet 40, and the other magnetic pole parts have the same structure. The magnetic pole parts 20, 21 and 22, 23 are structurally and magnetically symmetric with each other in the direction of a rotary shaft 8. The ration l2/l1 between the length l1 of the comb-shaped magnetic poles 30∼37 in the direction of the rotart shaft 8 and the distance between the butts of the magnetic poles facing each other across a gap is set at 0.2 to 0.7. Thereby, the torque of the motor is increased and the size and weight thereof are rudeced.
COPYRIGHT: (C)1979,JPO&Japio
JP14817377A 1977-12-12 1977-12-12 Step motor Pending JPS5480505A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14817377A JPS5480505A (en) 1977-12-12 1977-12-12 Step motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14817377A JPS5480505A (en) 1977-12-12 1977-12-12 Step motor

Publications (1)

Publication Number Publication Date
JPS5480505A true JPS5480505A (en) 1979-06-27

Family

ID=15446870

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14817377A Pending JPS5480505A (en) 1977-12-12 1977-12-12 Step motor

Country Status (1)

Country Link
JP (1) JPS5480505A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH058165U (en) * 1992-04-23 1993-02-05 ホソカワミクロン株式会社 Heat exchanger conduit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3206623A (en) * 1962-04-20 1965-09-14 Superior Electric Co Electric synchronous inductor motor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3206623A (en) * 1962-04-20 1965-09-14 Superior Electric Co Electric synchronous inductor motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH058165U (en) * 1992-04-23 1993-02-05 ホソカワミクロン株式会社 Heat exchanger conduit

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