GB811388A - Overload protected electric motor drive - Google Patents
Overload protected electric motor driveInfo
- Publication number
- GB811388A GB811388A GB2832056A GB2832056A GB811388A GB 811388 A GB811388 A GB 811388A GB 2832056 A GB2832056 A GB 2832056A GB 2832056 A GB2832056 A GB 2832056A GB 811388 A GB811388 A GB 811388A
- Authority
- GB
- United Kingdom
- Prior art keywords
- worm
- motor
- inner shaft
- switches
- shaft
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gear Transmission (AREA)
Abstract
811,388. Motor driving arrangements. DEAN, P. P. Sept. 17, 1956, No. 28320/56. Class 35. [Also in Groups XXIV and XXXVII] An overload protected electric motor drive comprises a motor rotor 4 which drives a hollow drive shaft 12 to which is connected for rotation but is axially slidable relatively thereto a worm 34 carried by an inner shaft 30 extending through the drive shaft 12, and a spring 40 disposed inside the drive shaft 12 and outside the inner shaft 30 and yieldably maintaining the shafts in predetermined axial relation, the energization of the motor being interruptable by a switch actuated upon axial sliding of the worm in response to axial thrust on the worm in excess of the force of the spring when the drive is overloaded. As shown, two switches 68, 72 are provided, both serially connected in the motor energization circuit, and have arms 70, 74 operable by a disc 62 adjustably positioned on an inner shaft extension 60 to open the motor circuit upon the inner shaft moving respectively to the left or right when a wormwheel 36 driven by the worm 34 in a clockwise or counterclockwise direction encounters, e.g. an obstruction. The switches may also control a visual or audible alarm signal; they may be self-locking, requiring to be reset when opened, or alternatively the worm and worm-wheel teeth may be non-reversible to hold the switches open until the overload is removed. The rotor shaft 12 is mounted in ball-bearings 16, 18 carried in a tubular support 14 formed in the wall of a supporting housing 8.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2832056A GB811388A (en) | 1956-09-17 | 1956-09-17 | Overload protected electric motor drive |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2832056A GB811388A (en) | 1956-09-17 | 1956-09-17 | Overload protected electric motor drive |
Publications (1)
Publication Number | Publication Date |
---|---|
GB811388A true GB811388A (en) | 1959-04-02 |
Family
ID=10273801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2832056A Expired GB811388A (en) | 1956-09-17 | 1956-09-17 | Overload protected electric motor drive |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB811388A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1294775B (en) * | 1961-02-28 | 1969-05-08 | Rotork Engineering Company Ltd | Drive unit, consisting of an electric motor and a worm gear |
FR2748357A1 (en) * | 1996-05-06 | 1997-11-07 | Kollmorgen Artus | LINEAR ACTUATOR OF A SEAT ELEMENT |
CN107585003A (en) * | 2017-10-09 | 2018-01-16 | 武汉凯沃森工业科技有限公司 | Rocker-arm crank-operated sliding roof opener protection device |
CN114483935A (en) * | 2022-01-21 | 2022-05-13 | 北京航空航天大学 | Gapless prepressing transmission device |
-
1956
- 1956-09-17 GB GB2832056A patent/GB811388A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1294775B (en) * | 1961-02-28 | 1969-05-08 | Rotork Engineering Company Ltd | Drive unit, consisting of an electric motor and a worm gear |
FR2748357A1 (en) * | 1996-05-06 | 1997-11-07 | Kollmorgen Artus | LINEAR ACTUATOR OF A SEAT ELEMENT |
WO1997042697A1 (en) * | 1996-05-06 | 1997-11-13 | Kollmorgen Artus | Linear actuating gear for seat element |
CN107585003A (en) * | 2017-10-09 | 2018-01-16 | 武汉凯沃森工业科技有限公司 | Rocker-arm crank-operated sliding roof opener protection device |
CN114483935A (en) * | 2022-01-21 | 2022-05-13 | 北京航空航天大学 | Gapless prepressing transmission device |
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