FR2281665A1 - Electrically operated jack - uses motor to drive nut on threaded longitudinal shaft within rotor assembly - Google Patents

Electrically operated jack - uses motor to drive nut on threaded longitudinal shaft within rotor assembly

Info

Publication number
FR2281665A1
FR2281665A1 FR7427652A FR7427652A FR2281665A1 FR 2281665 A1 FR2281665 A1 FR 2281665A1 FR 7427652 A FR7427652 A FR 7427652A FR 7427652 A FR7427652 A FR 7427652A FR 2281665 A1 FR2281665 A1 FR 2281665A1
Authority
FR
France
Prior art keywords
shaft
electrically operated
nut
rotor assembly
drive nut
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.)
Granted
Application number
FR7427652A
Other languages
French (fr)
Other versions
FR2281665B3 (en
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.)
TLD Group SAS
Original Assignee
TLD Group SAS
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 TLD Group SAS filed Critical TLD Group SAS
Priority to FR7427652A priority Critical patent/FR2281665A1/en
Publication of FR2281665A1 publication Critical patent/FR2281665A1/en
Application granted granted Critical
Publication of FR2281665B3 publication Critical patent/FR2281665B3/fr
Granted 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
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • 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
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
    • H02K7/1021—Magnetically influenced friction brakes
    • H02K7/1023—Magnetically influenced friction brakes using electromagnets
    • H02K7/1025—Magnetically influenced friction brakes using electromagnets using axial electromagnets with generally annular air gap
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K26/00—Machines adapted to function as torque motors, i.e. to exert a torque when stalled

Landscapes

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

Abstract

The shaft of this electrical jack is threaded and is moved in a longitudinal direction by a nut which, although free to rotate, is captive within a shaft extension of a torque motor. The motor is constructed around the shaft and its rotor is mechanically linked to the nut. An electrically operated brake is mounted on the shaft. Micro-switches prevent over-run of the mechanism. When the jack is energised, the brake releases and the rotor turns the nut which, in turn, moves the shaft longitudinally. This design overcomes the difficulties of jacks driven by internal motors and worm-driven gear boxes.
FR7427652A 1974-08-08 1974-08-08 Electrically operated jack - uses motor to drive nut on threaded longitudinal shaft within rotor assembly Granted FR2281665A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7427652A FR2281665A1 (en) 1974-08-08 1974-08-08 Electrically operated jack - uses motor to drive nut on threaded longitudinal shaft within rotor assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7427652A FR2281665A1 (en) 1974-08-08 1974-08-08 Electrically operated jack - uses motor to drive nut on threaded longitudinal shaft within rotor assembly

Publications (2)

Publication Number Publication Date
FR2281665A1 true FR2281665A1 (en) 1976-03-05
FR2281665B3 FR2281665B3 (en) 1977-06-03

Family

ID=9142265

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7427652A Granted FR2281665A1 (en) 1974-08-08 1974-08-08 Electrically operated jack - uses motor to drive nut on threaded longitudinal shaft within rotor assembly

Country Status (1)

Country Link
FR (1) FR2281665A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1086714A1 (en) * 1999-04-26 2001-03-28 Ken Takachi Mechanical lock mechanism and injector head using the mechanism
CN108233619A (en) * 2018-01-31 2018-06-29 湖北环电磁装备工程技术有限公司 The jack device that a kind of rimless combination type permanent-magnet linear synchronous motor directly drives
TWI729940B (en) * 2020-09-23 2021-06-01 東元電機股份有限公司 A motor with a braking device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1086714A1 (en) * 1999-04-26 2001-03-28 Ken Takachi Mechanical lock mechanism and injector head using the mechanism
EP1086714A4 (en) * 1999-04-26 2001-05-16 Ken Takachi Mechanical lock mechanism and injector head using the mechanism
US6758110B1 (en) 1999-04-26 2004-07-06 Ken Takachi Mechanical lock mechanism and injector head using the mechanism
CN108233619A (en) * 2018-01-31 2018-06-29 湖北环电磁装备工程技术有限公司 The jack device that a kind of rimless combination type permanent-magnet linear synchronous motor directly drives
TWI729940B (en) * 2020-09-23 2021-06-01 東元電機股份有限公司 A motor with a braking device

Also Published As

Publication number Publication date
FR2281665B3 (en) 1977-06-03

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