CH675047GA3 - Stepping motor for clock - includes additional pole piece to attenuate interaction between external magnetic field and rotor - Google Patents

Stepping motor for clock - includes additional pole piece to attenuate interaction between external magnetic field and rotor Download PDF

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Publication number
CH675047GA3
CH675047GA3 CH388488A CH388488A CH675047GA3 CH 675047G A3 CH675047G A3 CH 675047GA3 CH 388488 A CH388488 A CH 388488A CH 388488 A CH388488 A CH 388488A CH 675047G A3 CH675047G A3 CH 675047GA3
Authority
CH
Switzerland
Prior art keywords
rotor
pole piece
external magnetic
magnetic field
stepping motor
Prior art date
Application number
CH388488A
Other languages
English (en)
French (fr)
Other versions
CH675047B5 (enrdf_load_stackoverflow
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 filed Critical
Priority to CH388488A priority Critical patent/CH675047GA3/fr
Publication of CH675047GA3 publication Critical patent/CH675047GA3/fr
Publication of CH675047B5 publication Critical patent/CH675047B5/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/141—Stator cores with salient poles consisting of C-shaped cores
    • H02K1/143—Stator cores with salient poles consisting of C-shaped cores of the horse-shoe type
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B43/00—Protecting clockworks by shields or other means against external influences, e.g. magnetic fields
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C13/00—Driving mechanisms for clocks by primary clocks
    • G04C13/08—Secondary clocks actuated intermittently
    • G04C13/10—Secondary clocks actuated intermittently by electromechanical step advancing mechanisms
    • G04C13/11—Secondary clocks actuated intermittently by electromechanical step advancing mechanisms with rotating armature
    • 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
    • H02K11/01—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for shielding from electromagnetic fields, i.e. structural association with shields
    • H02K11/014—Shields associated with stationary parts, e.g. stator cores
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
    • H02K37/12—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets
    • H02K37/14—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K37/16—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures having horseshoe armature cores

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
CH388488A 1988-10-19 1988-10-19 Stepping motor for clock - includes additional pole piece to attenuate interaction between external magnetic field and rotor CH675047GA3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH388488A CH675047GA3 (en) 1988-10-19 1988-10-19 Stepping motor for clock - includes additional pole piece to attenuate interaction between external magnetic field and rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH388488A CH675047GA3 (en) 1988-10-19 1988-10-19 Stepping motor for clock - includes additional pole piece to attenuate interaction between external magnetic field and rotor

Publications (2)

Publication Number Publication Date
CH675047GA3 true CH675047GA3 (en) 1990-08-31
CH675047B5 CH675047B5 (enrdf_load_stackoverflow) 1991-02-28

Family

ID=4265577

Family Applications (1)

Application Number Title Priority Date Filing Date
CH388488A CH675047GA3 (en) 1988-10-19 1988-10-19 Stepping motor for clock - includes additional pole piece to attenuate interaction between external magnetic field and rotor

Country Status (1)

Country Link
CH (1) CH675047GA3 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997014081A1 (en) * 1995-10-12 1997-04-17 Marco Scaccabarozzi Watch with an electronic mechanism enclosed in a screening element

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3564314A (en) * 1969-07-11 1971-02-16 Tri Tech Rotor-stator capsule construction
JPS55133662A (en) * 1979-04-03 1980-10-17 Citizen Watch Co Ltd Magnetism-resistant structure for step motor for watch
US4317188A (en) * 1977-02-17 1982-02-23 Kabushiki Kaisha Suwa Seikosha Magnetic shielding plate for a step motor in an electronic wristwatch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3564314A (en) * 1969-07-11 1971-02-16 Tri Tech Rotor-stator capsule construction
US4317188A (en) * 1977-02-17 1982-02-23 Kabushiki Kaisha Suwa Seikosha Magnetic shielding plate for a step motor in an electronic wristwatch
JPS55133662A (en) * 1979-04-03 1980-10-17 Citizen Watch Co Ltd Magnetism-resistant structure for step motor for watch

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 5, no. 3 (E-40)[675], 10 janvier 1981; & JP-A-55 133 662 (CITIZEN TOKEI K.K.) 17-10-1980 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997014081A1 (en) * 1995-10-12 1997-04-17 Marco Scaccabarozzi Watch with an electronic mechanism enclosed in a screening element

Also Published As

Publication number Publication date
CH675047B5 (enrdf_load_stackoverflow) 1991-02-28

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