ES339527A1 - Electric Limit Switches - Google Patents

Electric Limit Switches

Info

Publication number
ES339527A1
ES339527A1 ES339527A ES339527A ES339527A1 ES 339527 A1 ES339527 A1 ES 339527A1 ES 339527 A ES339527 A ES 339527A ES 339527 A ES339527 A ES 339527A ES 339527 A1 ES339527 A1 ES 339527A1
Authority
ES
Spain
Prior art keywords
cam
switch
lever
ball
plunger
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
ES339527A
Other languages
Spanish (es)
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.)
Telemeccanica Elettrica
Original Assignee
Telemeccanica Elettrica
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 Telemeccanica Elettrica filed Critical Telemeccanica Elettrica
Publication of ES339527A1 publication Critical patent/ES339527A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
    • H01H11/0018—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches for allowing different operating parts

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

The body of a limit switch to receive interchangeable operating heads comprises a casing 1 in which a change-over microswitch 5 is mounted, somewhat obliquely to clear inner projections accommodating holes 6 for fixing screws, and a lever 9 (having arms 9a, 9b) is pivoted at 10 such that depression of a ball 11 actuates the pushbutton 8 of switch 5. The casing 1 is closed by a cover 4 which may carry terminals and prongs (not shown) for plug-in connection to the switch 5. Various heads are described to seat on an 0-ring 2. In one a direct-acting plunger (16, Fig. 3, not shown) transmits its motion to ball 11 via an overtravel spring (19) in another a laterally-moving plunger (Fig. 4, not shown) depresses ball 11 by means of a cam (20). The cam (20) may be carried by a double-ended plunger (16a, Figs. 5 and 6, not shown) with overcentre V-springs (22) which snap it into alternate positions. Alternatively a roller-ended lever (24, Figs. 7 and 8, not shown) may rock a cam (28) to provide two-way actuation of the switch or the cam may be reset by 120 degrees to give no actuation in one direction. The lever may have two mutually perpendicular arms (Figs. 9 and 10, not shown) and actuate a cam (34) resettable to provide different sequences of operation (Fig. 11 or Fig. 12, not shown).
ES339527A 1966-04-09 1967-04-08 Electric Limit Switches Expired ES339527A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT3303566 1966-04-09
IT854166 1966-04-09

Publications (1)

Publication Number Publication Date
ES339527A1 true ES339527A1 (en) 1968-05-01

Family

ID=26326079

Family Applications (1)

Application Number Title Priority Date Filing Date
ES339527A Expired ES339527A1 (en) 1966-04-09 1967-04-08 Electric Limit Switches

Country Status (3)

Country Link
DE (1) DE1690258B1 (en)
ES (1) ES339527A1 (en)
GB (1) GB1185903A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3507367A1 (en) * 1985-02-28 1986-08-28 Black & Decker Inc., Newark, Del. SWITCHES, ESPECIALLY FOR STATIONARY ELECTRIC TOOLS
CN110534362B (en) * 2019-09-26 2021-05-04 浙江星博电器有限公司 Adjustable rocker arm type travel switch

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE716033C (en) * 1938-03-12 1942-01-12 Otto Meisinger Cam roller switch
US2431747A (en) * 1943-07-15 1947-12-02 First Ind Corp Switch mechanism
DE972996C (en) * 1953-02-14 1959-11-12 Metzenauer & Jung G M B H Electrical switch, especially limit switch for electrical controls
DE1078213B (en) * 1958-03-06 1960-03-24 Calor Emag Elektrizitaets Ag Auxiliary switch for control circuits
DE1883887U (en) * 1963-05-04 1963-12-05 Siemens Ag TILT DRIVE FOR LIMIT SWITCH.
US3244015A (en) * 1964-07-10 1966-04-05 Square D Co Switch operating mechanism

Also Published As

Publication number Publication date
GB1185903A (en) 1970-03-25
DE1690258B1 (en) 1971-11-25

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