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

Info

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
French (fr)
Other versions
CH675047B5 (en
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/en
Publication of CH675047GA3 publication Critical patent/CH675047GA3/en
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 master-clocks
    • G04C13/08—Slave-clocks actuated intermittently
    • G04C13/10—Slave-clocks actuated intermittently by electromechanical step advancing mechanisms
    • G04C13/11—Slave-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)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromechanical Clocks (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

The stepping motor includes a section of magnetic core (1) round which the coil (2) is wound. This is linked to the stator pole piece (3) with an aperture in which the rotor (6) is mounted. The stator is extended by an additional arm (3b2) which entends from the pole piece section. This is intended to attenuate the interaction between the external magnetic field and the rotor. The stator is formed by cutting and stamping. ADVANTAGE - Motor has improved resistance to interference from external magnetic fields. (5pp Dwg.No.3/5)
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 (en) 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 (en)

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 (en) 1991-02-28

Similar Documents

Publication Publication Date Title
FR2263632B1 (en)
DK0588478T3 (en) Electric stepper motor
DK270089A (en) ELECTRIC ENGINE WITH ELECTRONIC COMMUTION
CH640385B (en) ELECTRONIC WATCH PART, ESPECIALLY ELECTRONIC BRACELET WATCH.
FR2427727B1 (en)
SE8102686L (en) MAGNETIC INDICATOR DEVICE
FR2574980B1 (en) SOLENOIDAL MAGNET WITH HOMOGENEOUS MAGNETIC FIELD
CH675047GA3 (en) Stepping motor for clock - includes additional pole piece to attenuate interaction between external magnetic field and rotor
CA2048118A1 (en) Indicating instruments
CA2033522A1 (en) Electromagnetic relay polarized by a permanent magnet
CH632376B (en)
JPS5540927A (en) Electronic wrist watch
JPS55163813A (en) Magnetic circuit
US4396846A (en) Stepping motor with rotor-positioning magnet
RU1817206C (en) Stepping motor
SE9503688L (en) Electromagnetic actuator
JPS641465A (en) Miniature linear pulse motor
JPS5768661A (en) Stepping motor for electronic watch
RU94009849A (en) ELECTRIC MOTOR HAVING A CLOSED MAGNETIZATION CIRCUIT, INCLUDING THE END OF THE BODY
RU96117047A (en) MACHINE SHOCK SPEED INDUCTION SENSOR
RU93016093A (en) ELECTRIC DRIVE
JPS5722368A (en) Stepping motor
KR870000619A (en) clock
JPS57204417A (en) Recorder using electromagnetic shuttle
ES2031946T3 (en) ELECTROMAGNETIC FOLDING ARMOR ARRANGEMENT.