GB643863A - Improvements in or relating to linearly extending actuators - Google Patents

Improvements in or relating to linearly extending actuators

Info

Publication number
GB643863A
GB643863A GB15300/47A GB1530047A GB643863A GB 643863 A GB643863 A GB 643863A GB 15300/47 A GB15300/47 A GB 15300/47A GB 1530047 A GB1530047 A GB 1530047A GB 643863 A GB643863 A GB 643863A
Authority
GB
United Kingdom
Prior art keywords
sleeves
screw
motor
abutment members
spring
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
GB15300/47A
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.)
Bendix Aviation Corp
Original Assignee
Bendix Aviation Corp
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 Bendix Aviation Corp filed Critical Bendix Aviation Corp
Publication of GB643863A publication Critical patent/GB643863A/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
    • 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
    • F16H25/2015—Means specially adapted for stopping actuators in the end position; Position sensing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C25/00—Alighting gear
    • B64C25/02—Undercarriages
    • B64C25/08—Undercarriages non-fixed, e.g. jettisonable
    • B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
    • B64C25/18—Operating mechanisms
    • B64C25/24—Operating mechanisms electric
    • 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
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/2081—Parallel arrangement of drive motor to screw axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Braking Arrangements (AREA)
  • Transmission Devices (AREA)

Abstract

643,863. Screw-and-nut actuators. BENDIX AVIATION CORPORATION. June 10, 1947, No. 15300. Convention date, July 1, 1946. [Class 78 (iii)] [Also in Group XXXVII] The reciprocatable member 24 in a screw-and-nut actuator carries a pair of abutment members 140, 142 which operate limit switches 20, 22, each member comprising a collar eccentrically encircling said reciprocatable member and movable thereon. The members 140, 142 are rotatably mounted on sleeves 130 and held thereon by fixed shoulders 134 and removable locking rings 136, spring-washers 148 serving to frictionally hold said abutment members from rotation. Adjustment of the amount of movement member 24 can make before switches 20 or 22 are actuated to de-energize motor 44, is effected by first moving the sleeves and abutment members axially along member 24 to give a rough adjustment, and then rotating the abutment members to adjust the height of their switch-engaging portions. Belleville springs 152 located in cups 150 serve to cushion the impact between the sleeves 130 and the casing should the actuator over-run. In a modification, Fig. 3 (not shown), Belleville springs are secured to the sleeves 130 and contact the external faces of abutment cups on over-run. The screw 62 is driven by a reduction gear train 16 through a pinion 66 on a shaft 68 to which shaft is splined a clutch disc 30 which, when the motor and solenoid 94 are de-energized, abuts against a non-rotatable brake ring 75. This ring locks the mechanism by being forced into engagement with the clutch-plate 30 by springs 76 which over-power a spring 74 tending to engage the clutch-plate with a driven plate 28. Upon simultaneous energization of the motor and solenoid the armature 96, together with the brake ring 75, is withdrawn to the right and the spring 74 urges the plates 28, 30 into contact so effecting the transmission of the motor drive to the screw 62.
GB15300/47A 1946-07-01 1947-06-10 Improvements in or relating to linearly extending actuators Expired GB643863A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US643863XA 1946-07-01 1946-07-01

Publications (1)

Publication Number Publication Date
GB643863A true GB643863A (en) 1950-09-27

Family

ID=22055595

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15300/47A Expired GB643863A (en) 1946-07-01 1947-06-10 Improvements in or relating to linearly extending actuators

Country Status (1)

Country Link
GB (1) GB643863A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1010149B (en) * 1953-01-13 1957-06-13 Siemag Siegener Maschb Ges Mit Electric thrust drive, in which a screw spindle connected to the motor shaft moves a nut sleeve in a straight line
US2985267A (en) * 1956-09-04 1961-05-23 Morgan Construction Co Machine with drive means
EP0000877A1 (en) * 1977-08-31 1979-03-07 Grisebach, Hans-Theodor Manipulator for positionning workpieces or other loads
DE3118805A1 (en) * 1981-05-12 1982-12-09 Pradler-Getriebetechnik GmbH, 7312 Kirchheim Linear drive unit
EP0134819A1 (en) * 1978-08-01 1985-03-27 Grisebach, Hans-Theodor Gripping head with an electric clasping drive
WO2005080827A1 (en) * 2004-02-17 2005-09-01 Daimlerchrysler Ag Stop device for a spindle drive
EP1420504B1 (en) * 2002-11-15 2012-06-13 Ab Skf Limit switch for a linear drive
US20190301590A1 (en) * 2018-03-27 2019-10-03 Ta Chuang WEI Gear reduction device having positioning assembly

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1010149B (en) * 1953-01-13 1957-06-13 Siemag Siegener Maschb Ges Mit Electric thrust drive, in which a screw spindle connected to the motor shaft moves a nut sleeve in a straight line
US2985267A (en) * 1956-09-04 1961-05-23 Morgan Construction Co Machine with drive means
EP0000877A1 (en) * 1977-08-31 1979-03-07 Grisebach, Hans-Theodor Manipulator for positionning workpieces or other loads
EP0134819A1 (en) * 1978-08-01 1985-03-27 Grisebach, Hans-Theodor Gripping head with an electric clasping drive
DE3118805A1 (en) * 1981-05-12 1982-12-09 Pradler-Getriebetechnik GmbH, 7312 Kirchheim Linear drive unit
EP1420504B1 (en) * 2002-11-15 2012-06-13 Ab Skf Limit switch for a linear drive
WO2005080827A1 (en) * 2004-02-17 2005-09-01 Daimlerchrysler Ag Stop device for a spindle drive
US20190301590A1 (en) * 2018-03-27 2019-10-03 Ta Chuang WEI Gear reduction device having positioning assembly

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