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 assemblyInfo
- 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
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.
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)
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 |
-
1974
- 1974-08-08 FR FR7427652A patent/FR2281665A1/en active Granted
Cited By (5)
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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