GB1399103A - Driving arrangements for leadscrews - Google Patents

Driving arrangements for leadscrews

Info

Publication number
GB1399103A
GB1399103A GB4113471A GB4113471A GB1399103A GB 1399103 A GB1399103 A GB 1399103A GB 4113471 A GB4113471 A GB 4113471A GB 4113471 A GB4113471 A GB 4113471A GB 1399103 A GB1399103 A GB 1399103A
Authority
GB
United Kingdom
Prior art keywords
flange
leadscrew
balls
drive
gear
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
GB4113471A
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.)
ZF International UK Ltd
Original Assignee
Lucas 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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Priority to GB4113471A priority Critical patent/GB1399103A/en
Publication of GB1399103A publication Critical patent/GB1399103A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H35/00—Gearings or mechanisms with other special functional features
    • F16H35/10—Arrangements or devices for absorbing overload or preventing damage by overload
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/2021—Screw mechanisms with means for avoiding overloading

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

1399103 Screw-and-nut actuators LUCAS INDUSTRIES Ltd 23 Oct 1972 [3 Sept 1971] 41134/71 Heading B8J A driving arrangement for a leadscrew 21 comprises a body 10 in which a pair of bevel gears 11, 12 is journalled. A spur gear 13 integral with the gear 12 engages teeth 17 on a flange 15 formed on a tubular drive member 14. A second flange 16 on the member 14 is formed with depressions 27 in which balls 28 are received. Similar depressions 27 in a ring 2 slidable on splines 24 on the member 14 also engage the balls 27. The ring 23 is loaded by a spring 26 so that drive from the gear 11 is transmitted through the balls 28 to the drive member 14 up to 120% of the maximum working torque. If the torque exceeds this value the balls 28 ride up the sides of the depressions 17 allowing angular rotation between the flange 16 and the ring 23 causing rollers 31 on flats on the flange 16 to jam against the body 10, arresting the drive arrangement. A ratchet wheel 36 is mounted between a thrust bearing 37 on the body 10 and the flange 15 with an interposed friction pad 38. The drive member 14 includes a ball nut 18 engaging the leadscrew 21, the nut 18 having a flange 33 with a thrust bearing 34 on one side and a friction pad 35 on the other. The arrangement holds the position of the leadscrew 21 against axial loading in either direction, while permitting the leadscrew 21 to be moved as required, and locks if the required torque is excessive. In a modification, Fig. 4 (not shown), the coupling between the input drive gear (41) and the leadscrew (51) is by means of a pair of torsion springs (52), (53).
GB4113471A 1971-09-03 1971-09-03 Driving arrangements for leadscrews Expired GB1399103A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4113471A GB1399103A (en) 1971-09-03 1971-09-03 Driving arrangements for leadscrews

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4113471A GB1399103A (en) 1971-09-03 1971-09-03 Driving arrangements for leadscrews

Publications (1)

Publication Number Publication Date
GB1399103A true GB1399103A (en) 1975-06-25

Family

ID=10418266

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4113471A Expired GB1399103A (en) 1971-09-03 1971-09-03 Driving arrangements for leadscrews

Country Status (1)

Country Link
GB (1) GB1399103A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0286111A1 (en) * 1987-04-10 1988-10-12 Transrol Quickly-releasable clutch
CN110925323A (en) * 2018-09-19 2020-03-27 Fte汽车有限责任公司 Electric clutch actuator with spring-loaded thrust member

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0286111A1 (en) * 1987-04-10 1988-10-12 Transrol Quickly-releasable clutch
CN110925323A (en) * 2018-09-19 2020-03-27 Fte汽车有限责任公司 Electric clutch actuator with spring-loaded thrust member
CN110925323B (en) * 2018-09-19 2023-03-14 Fte汽车有限责任公司 Electric clutch actuator with spring-loaded thrust member

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee