US3694597A - Quick-acting electric switch - Google Patents

Quick-acting electric switch Download PDF

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Publication number
US3694597A
US3694597A US137826A US3694597DA US3694597A US 3694597 A US3694597 A US 3694597A US 137826 A US137826 A US 137826A US 3694597D A US3694597D A US 3694597DA US 3694597 A US3694597 A US 3694597A
Authority
US
United States
Prior art keywords
rocker
contact
ram
external frame
quick
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 - Lifetime
Application number
US137826A
Other languages
English (en)
Inventor
Hans Michael Rosch
Ernst Limberger
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.)
Landis and Gyr AG
Original Assignee
Landis and Gyr AG
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 Landis and Gyr AG filed Critical Landis and Gyr AG
Application granted granted Critical
Publication of US3694597A publication Critical patent/US3694597A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/36—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs

Definitions

  • a quick-acting electric switch with a rocker which IS clamped to the switch case at one end and has a con- [30] Fowl Animation tact attached to the free end thereof, which free con- May 5, I970 Switzerland "6703/70 tact moves between two fixed contacts.
  • the rocker arm is driven by means of a ram and a compression [52] US. Cl. ..200/67 D spring in a manner so that the rocker arm accelerates [51] Int. CL.
  • the invention relates to a quick-acting electric switch with a switching rocker which is clamped to the switch case at one end and has a transmission arm and a working spring connected thereto and driven by means of a ram and a compression spring.
  • the present invention avoids the disadvantages of known switches of this type and provides a switch in which the force of the actuating ram is used to obtain a residual contact force at the tipping point by causing the driving force to act on the external frame of the rocker with a moment such that tipping takes place before the moment becomes zero.
  • FIG. 1 is a plan view of the rocker of the switch
  • FIG. 2 is a view in section of the rocker before the tipping point is reached
  • FIG. 3 is a view in section of the rocker at the tipping point
  • FIG. 4 is a view in section of the rocker after the tipping point has been reached.
  • FIG. 5 is a view in section of the rocker in which the points acted on by the compression spring and ram are displaced relative to one another.
  • FIGS. 1 and 2 illustrate the basic elements of the quick-acting switch, including a switching rocker 1 formed by an external frame 2 with one end clamped to the switch case 4 at point 3 and the other end carrying a contact 5.
  • a support is provided for a helical compression spring 6, as well as a guide (not shown) for a ram 7 and fastening means for two stationary contacts 8 and 9.
  • the external frame 2 of the rocker 1 is provided with a U-shaped aperture 10, so that a transmission arm 11 is formed.
  • the free end of the transmission arm is resiliently joined to the external frame 2 by a working spring 12.
  • the distance between the point 13 acted on by the ram 7 and the clamping location 3 is defined as The tipping, process will now be described with reference to FIGS.
  • the contact 5 starts moving in a negative direction, i.e., downwardly, and the zero value of the contact 5 is bypassed at high speed.
  • the rocker l is in the position shown in FIG. 4. In this way the driving force of the ram 7 and compression spring 6 take effect in a residual contact force which acts up to the tipping point.
  • the rocker 1 For the switch to operate satisfactorily it is preferable for the rocker 1 to have a symmetrical arrangement, i.e., that the contact 5 be located approximately midway between the two stationary contacts 8 and 9, when the ram 7 and compression spring 6 are effectively removed from the system.
  • a quick-acting electric switch including:
  • a switching rocker formed by an external frame which is fixed at one end and which carries a contact at the free end thereof; a pair of fixed contacts disposed on either side of said rocker contact such that one of said fixed contacts is normally touching said rocker contact;
  • a quick-acting switch according to claim 1 wherein the points at which said ram and said compression spring act upon said rocker are displaced from each other, the compression spring point lying between the ram point and the point where said external frame is attached.

Landscapes

  • Mechanisms For Operating Contacts (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Tumbler Switches (AREA)
  • Switches With Compound Operations (AREA)
US137826A 1970-05-05 1971-04-27 Quick-acting electric switch Expired - Lifetime US3694597A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH670370A CH503362A (de) 1970-05-05 1970-05-05 Elektrischer Schnappschalter

Publications (1)

Publication Number Publication Date
US3694597A true US3694597A (en) 1972-09-26

Family

ID=4313721

Family Applications (1)

Application Number Title Priority Date Filing Date
US137826A Expired - Lifetime US3694597A (en) 1970-05-05 1971-04-27 Quick-acting electric switch

Country Status (6)

Country Link
US (1) US3694597A (2)
CH (1) CH503362A (2)
DE (1) DE7022451U (2)
FR (1) FR2091235A5 (2)
GB (1) GB1293413A (2)
NL (1) NL143065B (2)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4104495A (en) * 1973-10-10 1978-08-01 Eaton Corporation Pressure switch and actuating means responsive to low pressure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4490708A (en) * 1982-06-24 1984-12-25 General Electric Company Condition responsive electric switch system, electrical switching device and method of operation thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2330506A (en) * 1941-10-13 1943-09-28 Allen Bradley Co Snap switch construction
CA712692A (en) * 1965-06-29 Rini Vincenzo Snap switch apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA712692A (en) * 1965-06-29 Rini Vincenzo Snap switch apparatus
US2330506A (en) * 1941-10-13 1943-09-28 Allen Bradley Co Snap switch construction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4104495A (en) * 1973-10-10 1978-08-01 Eaton Corporation Pressure switch and actuating means responsive to low pressure

Also Published As

Publication number Publication date
DE2033872A1 (de) 1971-11-18
NL7010369A (2) 1971-11-09
DE2033872B2 (de) 1972-08-17
NL143065B (nl) 1974-08-15
GB1293413A (en) 1972-10-18
DE7022451U (de) 1970-09-10
CH503362A (de) 1971-02-15
FR2091235A5 (2) 1972-01-14

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