EP2556522B1 - Elektrischer schnappschalter - Google Patents

Elektrischer schnappschalter Download PDF

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Publication number
EP2556522B1
EP2556522B1 EP12702186.3A EP12702186A EP2556522B1 EP 2556522 B1 EP2556522 B1 EP 2556522B1 EP 12702186 A EP12702186 A EP 12702186A EP 2556522 B1 EP2556522 B1 EP 2556522B1
Authority
EP
European Patent Office
Prior art keywords
contact
action switch
switch
snap
contact bridge
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.)
Active
Application number
EP12702186.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2556522A1 (de
Inventor
Paul Wirz
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.)
Schaltbau GmbH
Original Assignee
Schaltbau GmbH
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 Schaltbau GmbH filed Critical Schaltbau GmbH
Publication of EP2556522A1 publication Critical patent/EP2556522A1/de
Application granted granted Critical
Publication of EP2556522B1 publication Critical patent/EP2556522B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04Energy stored by deformation of elastic members
    • H01H5/30Energy stored by deformation of elastic members by buckling of disc springs
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts
    • H01H1/12Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20Bridging contacts
    • H01H1/2025Bridging contacts comprising two-parallel bridges
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02Details
    • H01H13/12Movable parts; Contacts mounted thereon
    • H01H13/20Driving mechanisms
    • H01H13/22Driving mechanisms acting with snap action
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02Details
    • H01H13/26Snap-action arrangements depending upon deformation of elastic members
    • H01H13/36Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04Energy stored by deformation of elastic members

Definitions

  • the invention relates to an electrical snap-action switch with a contact bridge which can be actuated via a switch plunger and a bistable spring arrangement, which can be connected in a first switch position to at least one first contact pair and in a second switch position to at least one second contact pair, wherein the spring arrangement has at least one each on both sides of the switch plunger Having spring arm, which furthermore in the event of breakage of one of the spring arms, the contact bridge is displaceable transversely to the direction of movement of the switching plunger to a Verschiebeendlage.
  • lever elements are still provided for a positive opening in some applications. These lever elements are usually pivotable on the switch plunger and can be applied with one end to the contact bridge and lead with sufficient force on the switch plunger to a pressure of the contact bridge of the contacts and thus to a compulsive opening the switch position.
  • an additional spring element in the snap-action switch can be integrated such that the position of the contact bridge is stabilized in this rest position by the force of this spring element.
  • a disadvantage of in the DE 296 14 028 U1 indicated path is, however, that the voltage applied to breakage of a spring arm at the contact bridge moment is relatively low.
  • the snap-action switch accelerating forces, the moment is not sufficient for a permanent opening of the switch positions. Especially when dynamic movements occur, it can therefore come to an undesirable displacement and / or rotation of the contact bridge and thus one of the switch positions are brought about unintentionally.
  • This object is achieved in that a sliding ramp is provided in the displacement of the contact bridge, which spaced at break a spring arm at least one contact of the contact bridge in Verschiebeendlage of the associated contact of the respective contact pair.
  • both the first and the second switching position of the snap-action switch is avoided.
  • the contact bridge is spaced from the contact pair of the first and / or second switching position.
  • the undamaged spring arm acts on the contact bridge in such a way that a positive opening of the snap-action switch is ensured even in the case of externally acting on the snap-action switch, in particular dynamic forces.
  • the slide ramps are arranged on the contact bridge on both sides of the switch plunger.
  • the arrangement of the slide ramps on the contact bridge a simple design of the slide ramps can be implemented.
  • the contact bridge comprises two substantially mutually parallel contact carrier, which are spaced and connected via at least two electrically insulating spacers, wherein the spacers are arranged on both sides of the switch plunger and the slide ramps through the contact carrier protruding ends of the spacers are formed.
  • the manufacturing effort for the slide ramps is further reduced.
  • each contact of the contact pairs is spaced by a separate sliding ramp of the contact bridge.
  • the slide ramps have a substantially wedge-shaped configuration, the distance between the contact bridge and the respective contact pair is constantly changed with increasing displacement when the contact bridge is displaced transversely to the direction of movement of the switch plunger. As a result, jerky movements of the contact bridge during the Movable avoidable and ensures a uniform guidance of the contact bridge in the Verschiebeendlage.
  • the contacts of the contact pairs with a respective sliding ramp facing ramp are executable. Accordingly, the risk of wedging the contact bridge or the sliding bridge associated with this contact bridge is minimized with the respective contact of the contact pair.
  • the ramp can be implemented in a simple manner as a result of a bending operation of the respective contact.
  • the in the FIGS. 1 and 2 shown electric snap-action switch 1 comprises a switch plunger 2, which is arranged centrally in a housing 3 and in two areas of the Housing 3 is mounted axially displaceable.
  • An upper and lower stop area 4 and 5 on the switch plunger 2 set the displacement of the switch plunger 2 fixed.
  • rest position of the switching plunger 2 due to the spring force of a spring element 6 in an upper position in which the upper stop portion 4 rests on the housing 3, held.
  • the two snap springs 7 are designed as two substantially omega-shaped spring arms and arranged substantially symmetrically to the direction of movement of the switch plunger 2.
  • the other ends of the snap springs 7 in turn are each supported in a notch of a spacer 8.
  • the two, also on both sides of the switch plunger 2 arranged spacers 8 form together with two contact carriers 9 a contact bridge 10.
  • the spacers 8 serve to receive the two, substantially parallel to each other contact carrier 9.
  • Die respective ends of the spacers 8 projecting beyond the contact carriers 9 are each designed as sliding ramps 11, the sliding ramps 11 comprising a substantially wedge-shaped flank and a substantially horizontally extending support area.
  • the contact bridge 10 is connected via a contact carrier 9 with a first contact pair 12.
  • the other contact carrier 9 is at the same time spaced from a second contact pair 13.
  • individual contact elements 14 are also arranged on the contact carrier.
  • the contacts of the first pair of contacts 12 are also partially bent, whereby in these areas a curved ramp is shown.
  • the respective contact of the contact pairs 12 and 13 comprises two substantially V-shaped converging contact edges 15, which merge into a separate, horizontal support area 16.
  • the snap springs 7 comprehensive spring arrangement is aligned so that when moving the switch plunger 2 transversely to the contact bridge 10, a snap-over of the contact bridge 10 takes place when a Umschnappéess is exceeded.
  • the second switching position of the switching plunger 2 is moved by an actuating force against the spring force of the spring element 6, while changing the position of the snap springs 7 at the same time.
  • the contact bridge 10 Upon reaching the predetermined by the construction of the snap springs 7 Umschnappluates, the contact bridge 10 snaps into a second switching position, wherein in this second switching position, a second contact pair 13 is connected via a contact carrier 9 and wherein the other contact carrier 9 is spaced from the first contact pair 12 , If the applied from the outside on the switch plunger 2 actuation force is interrupted in the connection, the switch plunger 2 is moved upwards again due to the force of the snap springs 7, whereby finally the contact bridge 10 snaps back into the first switching position.
  • Fig. 2 illustrates the behavior of the invention, electrical snap-action switch 1 immediately after breaking one of the snap springs 7.
  • the contact bridge 10 is here after breaking a snap spring 7 transversely to the direction of movement of the switch plunger 2 shifted until the slide ramps 11 according to the Fig. 2 at least at a contact of a contact pair 12 or 13 comes in a Verschiebeendlage to the plant. While the broken snap spring 7 can exert no more force on the contact bridge 10 immediately after breakage, the undamaged snap spring 7 relaxes and thus shifts due to the changing balance of forces, the contact bridge 10 transverse to the direction of movement of the switch plunger 2.
  • the displacement of the contact bridge is important Impact of the slide ramp 11 on a contact of a contact pair 12 or 13 to a sliding of the substantially wedge-shaped edge of the slide ramp 11 and thus to a lifting of the contact bridge 10 of the respective contact of the contact pair 12 or 13.
  • the sliding ramp 11 lies with a substantially horizontal running Support area flat on the horizontal bearing surface 16 of the contact of a contact pair 12 or 13 at.
  • the displacement is in this case influenced essentially by the spring properties of the respective undamaged snap spring 7.
  • a displacement limit 17 is further provided on the housing 3, at which the end faces of the contact carrier 9 come in a further displacement of the contact bridge 10 to the plant.
  • the detailed view of the Fig. 3 illustrates the surface contact of the slide ramp 11 at the contact of the first pair of contacts 12.
  • the contact here has two, substantially v-shaped converging contact edges 15 and two adjacent to these contact edges 15, horizontal bearing surfaces 16, the flat in the Verschiebeendlage shown abut the horizontal support region of the sliding ramp 11.

Landscapes

  • Push-Button Switches (AREA)
  • Slide Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP12702186.3A 2011-03-17 2012-01-27 Elektrischer schnappschalter Active EP2556522B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011014294A DE102011014294B3 (de) 2011-03-17 2011-03-17 Elektrischer Schnappschalter
PCT/EP2012/000381 WO2012123052A1 (de) 2011-03-17 2012-01-27 Elektrischer schnappschalter

Publications (2)

Publication Number Publication Date
EP2556522A1 EP2556522A1 (de) 2013-02-13
EP2556522B1 true EP2556522B1 (de) 2013-09-11

Family

ID=45562273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12702186.3A Active EP2556522B1 (de) 2011-03-17 2012-01-27 Elektrischer schnappschalter

Country Status (8)

Country Link
US (1) US9236201B2 (pt)
EP (1) EP2556522B1 (pt)
CN (1) CN103503102B (pt)
BR (1) BR112013009187B1 (pt)
DE (1) DE102011014294B3 (pt)
RU (1) RU2533191C2 (pt)
WO (1) WO2012123052A1 (pt)
ZA (1) ZA201300568B (pt)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8653913B2 (en) 2012-05-31 2014-02-18 Te Connectivity India Private Limited Fully rated contact system having normally open contact and normally closed contacts
DE102015212818A1 (de) * 2015-07-08 2017-01-12 Te Connectivity Germany Gmbh Kontaktbrückenanordnung für ein elektrisches Schaltelement
CN109935478B (zh) * 2019-01-04 2023-10-24 厦门宏发汽车电子有限公司 一种具有触点隔离保险的机械开关
DE102021105359A1 (de) 2021-03-05 2022-09-08 Bauch Engineering Gmbh & Co. Kg Schalter, insbesondere Schnappschalter
DE102022119929A1 (de) * 2022-08-08 2024-02-08 Schaltbau Gmbh Schnappschalter
WO2024078744A1 (en) * 2022-10-14 2024-04-18 Eaton Intelligent Power Limited Slider device for use in a switching mechanism

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH580862A5 (pt) * 1973-08-16 1976-10-15 Sodeco Compteurs De Geneve
US3973094A (en) * 1975-04-28 1976-08-03 Allen-Bradley Company Two-stage snap-action switch
FR2332605A1 (fr) * 1975-11-24 1977-06-17 Telemecanique Electrique Interrupteur electrique a coupure brusque
DE2618312A1 (de) * 1976-04-27 1977-11-17 Kissling Gmbh Schnappschalter
RU2052853C1 (ru) * 1992-05-06 1996-01-20 Организация арендаторов Орловского производственного объединения "Промприбор" Реле давления
CN2259680Y (zh) * 1995-06-30 1997-08-13 李庆尧 快动行程开关
DE29614028U1 (de) * 1996-08-13 1997-12-11 Schaltbau AG, 81677 München Schnappschalter mit Gehäuse
CN2354225Y (zh) * 1998-12-28 1999-12-15 西安沙尔特宝电气有限公司 带强制断开的速动开关
US6518528B2 (en) * 2001-04-11 2003-02-11 Rockwell Automation Technologies, Inc. Limit switch with direct opening action
RU2242817C1 (ru) * 2003-04-14 2004-12-20 Закрытое акционерное общество "ОРЛЭКС" Щелчковый выключатель
CN2631022Y (zh) * 2003-07-01 2004-08-04 陈国梁 单相电动工具用电子调速开关

Also Published As

Publication number Publication date
EP2556522A1 (de) 2013-02-13
CN103503102A (zh) 2014-01-08
CN103503102B (zh) 2016-01-20
RU2533191C2 (ru) 2014-11-20
DE102011014294B3 (de) 2012-03-29
RU2013102121A (ru) 2014-07-27
WO2012123052A1 (de) 2012-09-20
BR112013009187A2 (pt) 2016-07-26
BR112013009187B1 (pt) 2020-12-22
US9236201B2 (en) 2016-01-12
ZA201300568B (en) 2014-03-26
US20140001020A1 (en) 2014-01-02

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