EP0321392A1 - Kippschalter - Google Patents

Kippschalter Download PDF

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Publication number
EP0321392A1
EP0321392A1 EP88810772A EP88810772A EP0321392A1 EP 0321392 A1 EP0321392 A1 EP 0321392A1 EP 88810772 A EP88810772 A EP 88810772A EP 88810772 A EP88810772 A EP 88810772A EP 0321392 A1 EP0321392 A1 EP 0321392A1
Authority
EP
European Patent Office
Prior art keywords
switch
actuating lever
lever
support
actuating
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.)
Withdrawn
Application number
EP88810772A
Other languages
German (de)
English (en)
French (fr)
Inventor
Albert Portmann
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.)
Johnson Electric Switzerland AG
Original Assignee
Johnson Electric Switzerland 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 Johnson Electric Switzerland AG filed Critical Johnson Electric Switzerland AG
Publication of EP0321392A1 publication Critical patent/EP0321392A1/de
Withdrawn legal-status Critical Current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

  • the present invention relates to a toggle switch, in particular microswitch, with a toggle system which carries at least one contact and is attached to a pivotally supported actuation lever and at a fixed point and tilts when the actuation lever is pivoted under spring action.
  • toggle switches are generally known, for example from US Pat. No. 2,513,804.
  • the actuating lever has a cutting edge which is pivotably supported in a notch in a stationary switch part. This support remaining in the same place means that the actuating force acting on the actuating lever via an actuating plunger varies considerably and is relatively high.
  • the spring force acting on the tilting system cannot be reduced because this spring force is decisive for the contact forces.
  • To reduce the actuation forces one would have to move the pivot point of the actuation lever closer to the tilting system in order to reduce the effective lever arm, but this has the disadvantage that the restoring torque becomes very small or even drops to zero with large overtravel distances.
  • the aim of the present invention is now to achieve safe, clear switching operations and relatively high contact pressures with small actuation forces.
  • this aim is achieved in that there are at least two offset support points for the actuating lever, at which it is alternately supported when it is pivoted.
  • the actuating lever preferably has two offset cutting edges, each of which is assigned a supporting notch.
  • the support of the actuating lever is moved in the switching direction after a certain actuation path, so that the He effective between the support point for the actuating lever and the tilting system belarm is extended again.
  • the actuating force can thus always be kept relatively low, without disadvantages for the switching process and in particular the contact pressure to be achieved.
  • a known switch of the type mentioned above required a maximum switching force of 0.32 N at a nominal current of 16 A.
  • a switch according to the invention for the same nominal current intensity manages with a maximum actuating force of 0.06 N.
  • the actuating lever As a cam which rolls with a curved surface on a stationary switch part during the switch actuation (US Pat. No. 4,130,747).
  • the support point of the cam is continuously shifted while the switch is actuated.
  • the cam is a relatively expensive and delicate part, the position of which must be secured by stop pins. It is not possible to hold the cam in a certain position without play, and undesirable frictional forces arise.
  • a simple stamped part can be used, which is very similar and hardly more expensive than the stamped parts of conventional switches and whose support is always clearly defined.
  • the switch shown in Fig. 1 has a housing part 1 made of plastic, in which the other switch parts are inserted and secured in the same by a housing cover, not shown in Fig.1.
  • the housing part 1 has mounting holes 2 and 3 for mounting the switch.
  • Terminal lugs 4, 5 and 6 are inserted in the grooves of the housing part 1.
  • the connection lugs 4 and 5 are provided with contact pieces 7 and 8, respectively.
  • the multiply cranked connecting lug 6 is at the same time designed as a support member on the one hand for an actuating lever 9 and on the other hand for a compression spring 10.
  • the actuating lever 9 has at its lower end two symmetrically located outer, upper sheaths 9a and a middle, downwardly notched cutting edge 9b.
  • the two upper lateral cutting edges 9a of the actuating lever engage in notches 6a of the connection 6.
  • a central notch 6b is provided below these notches, into which the cutting edge 9b can engage when the actuating lever 9 is pivoted downward.
  • the compression spring 10 engages with a cutting edge 10a in a notch 6c of the connection 6.
  • An actuating plunger 11 acts on the upper end of the actuating lever 9.
  • a cutting edge 12a of a contact lever 12 stiffened by lateral flanges engages, with the freely movable end of which contact pieces 13 and 14 are riveted.
  • the compression spring 10 engages near the contacts 13 and 14 on the shift lever 12.
  • the solution according to the invention can, of course, also be used with other correspondingly constructed switches, for example with simple on or off switches. It would also be possible, instead of a double support, as shown, to provide, for example, a triple support with 3 offset cutting edges on the actuating lever 9 and three corresponding offset offset notches on the connection 6.

Landscapes

  • Mechanisms For Operating Contacts (AREA)
  • Push-Button Switches (AREA)
EP88810772A 1987-12-17 1988-11-09 Kippschalter Withdrawn EP0321392A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4916/87 1987-12-17
CH491687A CH675174A5 (ja) 1987-12-17 1987-12-17

Publications (1)

Publication Number Publication Date
EP0321392A1 true EP0321392A1 (de) 1989-06-21

Family

ID=4284772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88810772A Withdrawn EP0321392A1 (de) 1987-12-17 1988-11-09 Kippschalter

Country Status (3)

Country Link
EP (1) EP0321392A1 (ja)
JP (1) JPH01204320A (ja)
CH (1) CH675174A5 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0837483A2 (en) * 1996-10-15 1998-04-22 Omron Corporation Switching device
WO2007131606A1 (de) * 2006-05-15 2007-11-22 Hartmann Codier Gmbh Tastschalter
DE102007017366B3 (de) * 2007-04-12 2008-09-18 Cherry Gmbh Elektrischer Schalter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090176925A1 (en) 2006-05-22 2009-07-09 Morikatsu Matsunaga Dispersing agent

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB536357A (en) * 1940-03-14 1941-05-12 Alan Joy Kelsall Improvements in or relating to snap-action electric switches
US3459912A (en) * 1968-08-19 1969-08-05 Robertshaw Controls Co Switch with straight common terminal having plural pivots
US4130747A (en) * 1977-10-12 1978-12-19 Mcgill Manufacturing Company, Inc. Miniature overtravel snap action switch with pivotal cam mounting for the switch blade
EP0232765A2 (de) * 1986-02-14 1987-08-19 SWF Auto-Electric GmbH Elektrischer Schalter, insbesondere für Kraftfahrzeuge

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB536357A (en) * 1940-03-14 1941-05-12 Alan Joy Kelsall Improvements in or relating to snap-action electric switches
US3459912A (en) * 1968-08-19 1969-08-05 Robertshaw Controls Co Switch with straight common terminal having plural pivots
US4130747A (en) * 1977-10-12 1978-12-19 Mcgill Manufacturing Company, Inc. Miniature overtravel snap action switch with pivotal cam mounting for the switch blade
EP0232765A2 (de) * 1986-02-14 1987-08-19 SWF Auto-Electric GmbH Elektrischer Schalter, insbesondere für Kraftfahrzeuge

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0837483A2 (en) * 1996-10-15 1998-04-22 Omron Corporation Switching device
EP0837483A3 (en) * 1996-10-15 2000-11-22 Omron Corporation Switching device
CN1093317C (zh) * 1996-10-15 2002-10-23 欧姆龙公司 开关装置
WO2007131606A1 (de) * 2006-05-15 2007-11-22 Hartmann Codier Gmbh Tastschalter
DE102007017366B3 (de) * 2007-04-12 2008-09-18 Cherry Gmbh Elektrischer Schalter
US7932475B2 (en) 2007-04-12 2011-04-26 Zf Friedrichshafen Ag Electric switch

Also Published As

Publication number Publication date
JPH01204320A (ja) 1989-08-16
CH675174A5 (ja) 1990-08-31

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Designated state(s): DE FR GB IT NL

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Effective date: 19890708

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Effective date: 19920408