GB996521A - Improvements in or relating to electric-switch control mechanism - Google Patents

Improvements in or relating to electric-switch control mechanism

Info

Publication number
GB996521A
GB996521A GB12439/62A GB1243962A GB996521A GB 996521 A GB996521 A GB 996521A GB 12439/62 A GB12439/62 A GB 12439/62A GB 1243962 A GB1243962 A GB 1243962A GB 996521 A GB996521 A GB 996521A
Authority
GB
United Kingdom
Prior art keywords
cam
shaft
movement
arm
switch
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
GB12439/62A
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.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique SA
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 La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
Publication of GB996521A publication Critical patent/GB996521A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/60—Angularly-movable actuating part carrying no contacts
    • H01H19/62—Contacts actuated by radial cams
    • 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
    • F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G15/00—Mechanical devices for initiating a movement automatically due to a specific cause
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H01H21/30—Operating parts, e.g. handle not biased to return to a normal position upon removal of operating force
    • H01H21/34—Operating parts, e.g. handle not biased to return to a normal position upon removal of operating force adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/36—Driving mechanisms
    • H01H21/50—Driving mechanisms with indexing or latching means, e.g. indexing by ball and spring; with means to ensure stopping at intermediate operative positions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H01H21/24—Operating parts, e.g. handle biased to return to normal position upon removal of operating force
    • H01H21/28—Operating parts, e.g. handle biased to return to normal position upon removal of operating force adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
    • H01H21/285—Operating parts, e.g. handle biased to return to normal position upon removal of operating force adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift having an operating arm actuated by the movement of the body and mounted on an axis converting its rotating movement into a rectilinear switch activating movement

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Sheet Holders (AREA)
  • Push-Button Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Transmission Devices (AREA)

Abstract

996,521. Cam-operated switches; momentary-contact switches; retractive switches. LA TELEMECANIQUE ELECTRIQUE. March 30, 1962 [April 5, 1961], No. 12439/62. Heading H2B. The on/off conditions of a limit switch actuated by a cam 30 upon angular movement of a shaft 11 can be easily reversed with respect to the direction of movement of the shaft by rotating the shaft beyond its normal angular limit after temporary release of the limiting means. The cam 30 is fixed on shaft 11 which has an arm 13 secured thereon by screw 41, and pins 32, 40 on cam 30 co-operate with lugs inside casing 10 (Fig 3, not shown) to restrict the movement to a little under 180 degrees. The shaft is spring-loaded to the right by spring 19 acting on a cam sleeve 17 having lugs 17a slidable in grooves 10a, 10b in casing 10. Cam 17 also has V-shaped recesses 33a, 33b which co-operate with V- shaped ridges 31a, 31b on cam 30 to urge the cam 30 (and therefore shaft 11 and arm 13) to a central neutral position. Movement of arm 13 in one direction causes cam 30 to depress ball 7 and actuator 6 of microswitch 1 while movement in the other direction does not operate the switch. Cam 30 is symmetrical about a horizontal diameter such that if the shaft 11 is moved axially to the left against spring 19 and then rotated to move pins 32, 40 past the co-operating stops in casing 10 and then allowed to return to the right, the profile of cam 30 which co-operates with ball 7 is reversed with respect to the previous condition and the switch is operated by movement in the opposite sense. The arm 13 would have to be released and reset 180 degrees displaced after such adjustment. Normally movement of the shaft 11 to the left causes arm 13 to abut a sleeve 12 before pins 32, 40 are clear of their co-operating lugs and thus inadvertent adjustment of the active cam profile is prevented. The device may have two stable end positions instead of a central neutral position by providing cam 17 with four V-shaped recesses in place of the two 33a, 33b. The cam 30 may have other profiles than that shown, for example it might provide momentary actuation of switch 1 by rotation of the shaft in one direction. Specification 906,990 is referred to.
GB12439/62A 1961-04-05 1962-03-30 Improvements in or relating to electric-switch control mechanism Expired GB996521A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR857825A FR79640E (en) 1961-04-05 1961-04-05 Switching device for mechanical control by encountering mobiles

Publications (1)

Publication Number Publication Date
GB996521A true GB996521A (en) 1965-06-30

Family

ID=8752406

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12439/62A Expired GB996521A (en) 1961-04-05 1962-03-30 Improvements in or relating to electric-switch control mechanism

Country Status (8)

Country Link
US (1) US3126460A (en)
CH (1) CH385317A (en)
DE (1) DE1184397B (en)
ES (1) ES275985A2 (en)
FR (1) FR79640E (en)
GB (1) GB996521A (en)
LU (1) LU37633A1 (en)
NL (2) NL276396A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3546954A (en) * 1966-07-22 1970-12-15 Buchanan Electrical Prod Corp Device for actuating a limit control element
US3770926A (en) * 1972-07-27 1973-11-06 Allen Bradley Co Selector switch actuator with part of detent means integral with actuator cam
US6716936B1 (en) 2002-12-16 2004-04-06 Equistar Chemicals L.P. Cascaded boiling pool slurry reactors for producing bimodal low to medium density polyethylene polymers
CN101499383B (en) * 2008-01-31 2011-12-07 河南平高电气股份有限公司 Electric connection device between contact tubes on high-voltage switch assembly
FR2943839B1 (en) * 2009-03-30 2011-07-29 Schneider Electric Ind Sas POSITION SWITCH
JP5870704B2 (en) * 2012-01-13 2016-03-01 オムロン株式会社 Limit switch and manufacturing method thereof
US8902084B2 (en) * 2013-01-31 2014-12-02 Messier-Dowty Inc. Switch assembly and over-steer detection system
JP6282173B2 (en) * 2014-05-23 2018-02-21 アルプス電気株式会社 Rotary operation device
US9896525B2 (en) 2015-04-29 2018-02-20 Exxonmobil Chemical Patents Inc. Homogeneous polymerization process using evaporative cooling

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2289643A (en) * 1941-06-09 1942-07-14 Furnas Cam type limit switch
US2522278A (en) * 1947-11-12 1950-09-12 Furnas Electric Co Cam type limit switch assemblage
FR1212196A (en) * 1958-09-11 1960-03-22 Telemecanique Electrique Switching device for mechanical control by encountering mobiles

Also Published As

Publication number Publication date
NL276396A (en)
FR79640E (en) 1962-12-28
NL123490C (en)
CH385317A (en) 1964-12-15
DE1184397B (en) 1964-12-31
US3126460A (en) 1964-03-24
LU37633A1 (en) 1960-03-08
ES275985A2 (en) 1962-06-01

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