GB1111368A - Improvements in or relating to devices for ensuring the correct direction of rotation of a small electric synchronous motor - Google Patents

Improvements in or relating to devices for ensuring the correct direction of rotation of a small electric synchronous motor

Info

Publication number
GB1111368A
GB1111368A GB502667A GB502667A GB1111368A GB 1111368 A GB1111368 A GB 1111368A GB 502667 A GB502667 A GB 502667A GB 502667 A GB502667 A GB 502667A GB 1111368 A GB1111368 A GB 1111368A
Authority
GB
United Kingdom
Prior art keywords
pawl
ratchet wheel
arm
shaft
motor
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.)
Expired
Application number
GB502667A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1111368A publication Critical patent/GB1111368A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/118—Structural association with clutches, brakes, gears, pulleys or mechanical starters with starting devices
    • H02K7/1185—Structural association with clutches, brakes, gears, pulleys or mechanical starters with starting devices with a mechanical one-way direction control, i.e. with means for reversing the direction of rotation of the rotor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmission Devices (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

1,111,368. Electric motor driving arrangements. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 2 Feb., 1967 [5 Feb., 1966], No. 5026/67. Heading H2A. A device for ensuring correct direction of rotation of a small synchronous motor, including a ratchet wheel driven by the motor and a pawl which coacts with the ratchet wheel and which is pivotable about a shaft to a limited extent, the pawl coacting with the ratchet wheel in the undesired direction of rotation and being clear of the ratchet wheel in the desired direction of rotation, is characterized in that the pawl is resiliently connected to an arm so that the pawl is resilient in a direction approximately concentric with the ratchet wheel periphery, the shaft about which the pawl arm is pivotable to a limited extent forming part of a rotary disc driven by the motor and the pawl arm being connected to the shaft by a friction coupling. As shown, it is assumed that the motor has started in the wrong (counter-clockwise) direction. Pawl 13, 9, thereupon engages a tooth of ratchet wheel 4 mounted on the shaft of rotor 1. The pawl is connected by resilient rods 11, 12 to a pawl arm 8 whose hub 7 is frictionally secured to gear-wheel 6 meshing with gear-wheel 5 on the rotor shaft. The resilient mounting 11, 12 ensures that the pawl 13, 9 first tends to be urged circumferentially counter-clockwise and then imparts a clockwise impulse to ratchet wheel 4. Thereupon, the motor starts in the correct direction, and gear-wheel 6, now rotating counter-clockwise, carries pawl arm 8 around with it until arm 8 is stopped at 14, clear of ratchet wheel 4. Preferably the rotor 1 is made of sintered oxidic ferromagnetic material. Stator poles 2 are provided.
GB502667A 1966-02-05 1967-02-02 Improvements in or relating to devices for ensuring the correct direction of rotation of a small electric synchronous motor Expired GB1111368A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6601500A NL6601500A (en) 1966-02-05 1966-02-05

Publications (1)

Publication Number Publication Date
GB1111368A true GB1111368A (en) 1968-04-24

Family

ID=19795649

Family Applications (1)

Application Number Title Priority Date Filing Date
GB502667A Expired GB1111368A (en) 1966-02-05 1967-02-02 Improvements in or relating to devices for ensuring the correct direction of rotation of a small electric synchronous motor

Country Status (4)

Country Link
CH (1) CH455029A (en)
DE (2) DE6608110U (en)
GB (1) GB1111368A (en)
NL (1) NL6601500A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4791327A (en) * 1985-08-06 1988-12-13 U.S. Philips Corp. Drive mechanism for a domestic vibration apparatus
CN110784064A (en) * 2018-07-27 2020-02-11 日本电产三协电子(东莞)有限公司 motor unit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475308A2 (en) * 1980-02-04 1981-08-07 Crouzet Sa ANTI-RETURN DEVICE FOR SMALL SYNCHRONOUS MOTORS
CN104079112B (en) * 2013-03-27 2016-08-03 海洋王（东莞）照明科技有限公司 Lamp rotating motor synchronous belt tightness adjusting device and lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4791327A (en) * 1985-08-06 1988-12-13 U.S. Philips Corp. Drive mechanism for a domestic vibration apparatus
CN110784064A (en) * 2018-07-27 2020-02-11 日本电产三协电子(东莞)有限公司 motor unit

Also Published As

Publication number Publication date
NL6601500A (en) 1967-08-07
DE6608110U (en) 1971-06-09
CH455029A (en) 1968-04-30
DE1588566A1 (en) 1970-08-13

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