EP0970497B1 - Dispositif de commutation - Google Patents

Dispositif de commutation Download PDF

Info

Publication number
EP0970497B1
EP0970497B1 EP98916914A EP98916914A EP0970497B1 EP 0970497 B1 EP0970497 B1 EP 0970497B1 EP 98916914 A EP98916914 A EP 98916914A EP 98916914 A EP98916914 A EP 98916914A EP 0970497 B1 EP0970497 B1 EP 0970497B1
Authority
EP
European Patent Office
Prior art keywords
contact arm
switching device
contact
braking body
movable
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
EP98916914A
Other languages
German (de)
English (en)
Other versions
EP0970497A1 (fr
Inventor
Lutz Thilker
Albert Zacharias
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.)
Eaton Industries GmbH
Original Assignee
Moeller 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 Moeller GmbH filed Critical Moeller GmbH
Publication of EP0970497A1 publication Critical patent/EP0970497A1/fr
Application granted granted Critical
Publication of EP0970497B1 publication Critical patent/EP0970497B1/fr
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
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock

Definitions

  • the invention relates to a switching device with a contact arrangement at least one movable on a rotatable or displaceable contact arm arranged switching piece and at least one fixed Switch piece, wherein the switching device at least a first stop includes the movement of the contact arm when opening the contact assembly limited.
  • FR-A 1 048 980 is a generic switching device known with a contact arrangement, with a movable one Contact arm arranged contact piece and a fixed contact piece, wherein the switching device arranged a stop in the form of a movable Brake body includes the movement of the contact arm when Limited opening of the contact arrangement.
  • the contact arm moves after the impact together with the damping buffer belonging to the brake body, until it is braked. There is still a risk that a contact arm with high energy due to the elasticity of the hardened rubber or an equivalent material Damping buffer is thrown back.
  • the invention is therefore based on the object of a switching device Specify the type mentioned, in which the contact arm in the case high switching capacities when reaching its predetermined end position is braked without being thrown back by the stop becomes.
  • the object is achieved in that the first stop is movable as a whole and that the inertia of the Contact arm including the moving contact and the brake body are approximately the same, so that when the contact arm hits the Brake body is impacted such that the contact arm brakes and the brake body is moved.
  • the invention is essentially based on the idea of a moving brake body as a stop use the material and inertia (i.e. inertial mass or moment of inertia) is matched to the contact arm so that when the Contact arm on the brake body an impact is performed such that the Contact arm braked hard and the brake body at the appropriate speed is moved in a predetermined direction.
  • the brake body can then optionally after reaching one predetermined distance by appropriate additional means, for example a second stop or a spring.
  • additional means for example a second stop or a spring.
  • the brake body is braked by a second stop, is between the brake body and the second stop provided a damping body, which after the impact of the switching arm against the brake body, its movement brakes if the brake body in turn moves back to a starting position becomes.
  • This damping body can preferably simultaneously as Serve holding element for the brake body. So that the contact arm through the moving back brake body not pushed again and pivoted back , it has proven to be advantageous for the brake body Backstop to be provided.
  • an elastic or a plastically deformable material for example lead.
  • this can already when the contact piece strikes the brake body, a large part of the Kinetic energy of the contact arm are permanently absorbed.
  • the permanent deformation of the Brake body in a simple manner for example by using a viewing window or by using a pressure sensor etc.
  • Lifetime display of the switching device can be used.
  • the brake body is advantageously supported by a guide such that it after the impact is moved with the contact arm in the direction of impact.
  • An advantageous embodiment of the invention is that it the switching device around a pole of a circuit breaker with two fixed Contact pieces and two movable contact pieces per switch Pol acts, the movable contact pieces on the two opposite Ends of the contact arm are attached and each end of the Contact arm is assigned a brake body. Finally, it is useful if the contact arm is pivotable about a central axis or if the contact arm can be moved linearly.
  • Fig. 1 denotes a circuit breaker, which is a switching chamber housing with a housing wall 2 indicated only schematically and one in the housing arranged contact assembly 3 comprises.
  • two terminals 4, 5 are provided, which have a loop-shaped rail-shaped Heads 6, 7 are connected to two fixed pieces of scarf 8, 9.
  • the fixed contact pieces 8, 9 are rotatable by means of an axis 10 Contact arm 11 bridged.
  • the two arm halves 12, 13 press the rotatable contact arm 11 via movable contact pieces 14, 15 against the fixed contact pieces 8, 9.
  • a brake body (first stop) 16, 17 are arranged between the housing wall 2 and the two sides.
  • the brake body consist, for example, of the same material as that Contact arm (e.g. made of copper).
  • the masses of the two brake bodies 16, 17 are so on the mass of the contact arm 11 including the movable Switch pieces 14, 15 matched that with an opening movement in the direction indicated by the arrows 100 when the contact arm strikes 11 performed an elastic impact on the respective brake body 16, 17 is such that the contact arm 11 brakes strongly (ideally completely braked) and the respective brake body 16, 17 with a corresponding one Speed is shifted to the housing wall 2.
  • the housing wall 2 is in the impact area of the respective brake body 16, 17 as second stop 18, 19 designed to brake the brake body.
  • the respective brake body 16, 17 is preferably in a damping body 20 made of a resilient material (preferably Rubber) stored, which after the impact of the contact arm 11 against the Brake body 16, 17 partially slows down its movement.
  • a damping body 20 made of a resilient material (preferably Rubber) stored, which after the impact of the contact arm 11 against the Brake body 16, 17 partially slows down its movement.
  • a corresponding one Embodiment of a back stop designated 21 shows Fig. 3.
  • the backstop is one by the inner step Step recess of a corresponding support part 22 is formed.
  • the invention is of course not based on the exemplary embodiments described limited. So the braking of the contact arm by means of a movable brake body not only when using rotatable, but also when using sliding contact arms. Further can also be used as a damping body with a spring with appropriate characteristics be used.
  • the respective brake body does not have to as in the Figures shown to be arranged in the area of the contact arm ends, but can be especially with regard to the realization of a straight central Shock of the pushing and pushing body arranged in this way be that the direction of impact with the connecting line of the centers of the contact arm (or contact arm half) and brake body coincides.
  • the brake body does not necessarily have to be in the direction of the opening movement of the contact arm, but can - if this e.g. should be necessary for reasons of space - also move in another direction.
  • a corresponding exemplary embodiment is shown in FIG. 4.
  • the Brake body does not necessarily have to be the case with the material of the brake body act only elastically deformable material. Rather, the Brake body at least partially be plastically deformable. As a material for example, lead can be used in this case. This will already when the contact piece strikes the brake body, a large part the kinetic energy of the contact arm is permanently absorbed. With such a Embodiment can also the permanent deformation of the brake body in a simple way to display the service life of the switching device be used.
  • a corresponding embodiment of an arrangement with 5 shows a brake body made of plastically deformable material. The only schematically indicated contact arm with 24 and the plastic deformable brake body designated 25. On the contact arm 24 facing away from the side a deformation space 26 is provided, in which the Brake body can dodge when the contact arm hits (dashed line).

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Push-Button Switches (AREA)
  • Massaging Devices (AREA)
  • Valve Device For Special Equipments (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Eye Examination Apparatus (AREA)
  • Seal Device For Vehicle (AREA)
  • Vehicle Body Suspensions (AREA)

Claims (10)

  1. Dispositif de commutation avec une disposition de contact (3), avec au moins un élément de contact mobile (14, 15) disposé sur un bras de contact pivotant ou déplaçable en translation (11 ; 11' ; 24) et au moins un élément de contact fixe (8, 9), le dispositif de commutation (1) comprenant au moins une première butée (16, 17; 16' ; 25) sous forme d'un corps de freinage qui limite le mouvement du bras de contact (11 ; 11' ; 24) au moment de l'ouverture de la disposition de contact (3), caractérisé en ce que la première butée (16, 17 ; 16' ; 25) est mobile en entier et que les inerties du bras de contact (11 ; 11' ; 24) avec l'élément de contact mobile (14, 15) d'une part ainsi que du corps de freinage (16, 17 ; 16' ; 25) d'autre part qui sont d'importance en vue de l'impact sont approximativement égales de sorte qu'un impact soit exercé lorsque le bras de contact (11) vient frapper le corps de freinage (16, 17; 16'; 25) de sorte que le bras de contact (11 ; 11' ; 24) soit freiné et que le corps de freinage (16, 17 ; 16' ; 25) se déplace.
  2. Dispositif de commutation selon la revendication 1, caractérisé en ce que des moyens (18, 19 ; 20) sont prévus pour freiner le mouvement du corps de freinage (16, 17 ; 16') résultant de l'impact exercé par le bras de contact (11, 11') et ensuite effectuer un mouvement du corps de freinage (16, 17 ; 16') l'amenant à sa position primitive.
  3. Dispositif de commutation selon la revendication 2, caractérisé en ce que les moyens (18, 19; 20) destinés à freiner le bras de contact en mouvement (11 ; 11') comprennent une deuxième butée (18, 19), un ressort ou un corps amortisseur (20) disposé de manière fixe.
  4. Dispositif de commutation selon la revendication 2 ou 3, caractérisé en ce que le dispositif de commutation (1) comprend une butée de retour (21) limitant le mouvement du corps de freinage (16, 17 ; 16') en direction du bras de contact (11).
  5. Dispositif de commutation selon l'une des revendications 1 à 4, caractérisé en ce que le corps de freinage (16, 17 ; 16') est réalisé en un matériau apte à la déformation élastique.
  6. Dispositif de commutation selon l'une des revendications 1 à 4, caractérisé en ce que le corps de freinage (25) est réalisé en un matériau apte à la déformation plastique qui absorbe de manière permanente une grande partie de l'énergie cinétique du bras de contact (24) lorsque celui vient frapper le bras de contact.
  7. Dispositif de commutation selon l'une des revendications 1 à 6, caractérisé en ce que le corps de freinage (16, 17 ; 16' ; 25) est appuyé par un moyen de guidage de sorte qu'il soit poussé en direction de l'impact après avoir été poussé par le bras de contact (11 ; 11' ; 24).
  8. Dispositif de commutation selon l'une des revendications 1 à 7, caractérisé en ce que le dispositif de commutation (1) est un pôle d'un disjoncteur de puissance doté de deux éléments de contact fixe (8, 9) et deux éléments de contact mobile (14, 15) pour chaque pôle à commuter, les éléments de contact mobile (14, 15) étant fixés sur les deux extrémités opposées du bras de contact (11) et un corps de freinage (16, 17) étant associé à chacune des extrémités du bras de contact (11).
  9. Dispositif de commutation selon l'une des revendications 1 à 8, caractérisé en ce que le bras de contact (11) est pivotable autour d'un axe disposé au centre (10).
  10. Dispositif de commutation selon l'une des revendications 1 à 9, caractérisé en ce que le bras de contact est déplaçable linéairement.
EP98916914A 1997-03-27 1998-03-11 Dispositif de commutation Expired - Lifetime EP0970497B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19712958A DE19712958C1 (de) 1997-03-27 1997-03-27 Schaltvorrichtung
DE19712958 1997-03-27
PCT/EP1998/001386 WO1998044524A1 (fr) 1997-03-27 1998-03-11 Dispositif de commutation

Publications (2)

Publication Number Publication Date
EP0970497A1 EP0970497A1 (fr) 2000-01-12
EP0970497B1 true EP0970497B1 (fr) 2002-12-18

Family

ID=7824836

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98916914A Expired - Lifetime EP0970497B1 (fr) 1997-03-27 1998-03-11 Dispositif de commutation

Country Status (6)

Country Link
US (1) US6246021B1 (fr)
EP (1) EP0970497B1 (fr)
AT (1) ATE230155T1 (fr)
AU (1) AU7033498A (fr)
DE (2) DE19712958C1 (fr)
WO (1) WO1998044524A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6489869B2 (en) * 2000-03-08 2002-12-03 Juergen Breitlow-Hertzfeldt Electrical component and process for the manufacture thereof
EP1132935B1 (fr) * 2000-03-08 2006-08-23 Tyco Electronics AMP GmbH Composant électrique et son procédé de fabrication
US6590172B1 (en) * 2002-03-29 2003-07-08 General Electric Company Circuit breaker mechanism for a rotary contact system
US7064284B1 (en) * 2005-01-13 2006-06-20 Eaton Corporation Circuit breaker with bumper
DE102005014006B4 (de) * 2005-03-26 2013-09-19 Abb Ag Elektrisches Schaltgerät
DE102008024387A1 (de) * 2008-05-15 2009-11-19 Siemens Aktiengesellschaft Schaltgerät
DE102010017900A1 (de) * 2010-04-21 2011-10-27 Abb Ag Installationsschaltgerät mit einer Doppelunterbrechung
CN102856086B (zh) * 2011-06-29 2015-04-29 西门子公司 切换装置
CN109411247A (zh) * 2017-08-18 2019-03-01 日立电梯（中国）有限公司 一种开关防回弹装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1048980A (fr) 1950-12-08 1953-12-28 Westinghouse Electric Corp Amortisseur pour disjoncteur
DE1025041B (de) 1954-09-03 1958-02-27 Siemens Ag Elektrischer Kippschalter
US3443253A (en) * 1966-12-05 1969-05-06 Babcock Electronics Corp Armature damping structure
DE2037552A1 (de) 1970-07-29 1972-02-03 Siemens Ag Selbstschalter, insbesondere Fehler stromschutzschalter
US4563557A (en) * 1984-09-28 1986-01-07 Westinghouse Electric Corp. Molded case circuit breaker with a movable contact arm shock absorbing member
US4650946A (en) * 1985-11-27 1987-03-17 Westinghouse Electric Corp. Circuit breaker with stop plate for contact arm
JPH067552Y2 (ja) * 1986-08-04 1994-02-23 三菱電機株式会社 多極回路しや断器
US4891617A (en) 1988-08-01 1990-01-02 Westinghouse Electric Corp. Rubber stops in outside poles
US5023583A (en) * 1988-10-21 1991-06-11 Westinghouse Electric Corp. Circuit breaker contact operating structure
US5089795A (en) * 1990-06-29 1992-02-18 General Electric Company Compact molded case circuit breaker with movable contact arm rebound cushion
US5192841A (en) * 1991-11-06 1993-03-09 Westinghouse Electric Corp. Circuit breaker with shock absorbing mechanism
DE4201956A1 (de) 1992-01-24 1993-07-29 Siemens Ag Kontaktanordnung fuer vakuumschalter
DE29510909U1 (de) 1995-07-06 1995-09-14 Klöckner-Moeller GmbH, 53115 Bonn Strombegrenzendes Kontaktsystem mit Rückfallverzögerung des elektrodynamisch betätigten beweglichen Kontaktes

Also Published As

Publication number Publication date
EP0970497A1 (fr) 2000-01-12
DE19712958C1 (de) 1998-05-07
DE59806727D1 (de) 2003-01-30
WO1998044524A1 (fr) 1998-10-08
AU7033498A (en) 1998-10-22
ATE230155T1 (de) 2003-01-15
US6246021B1 (en) 2001-06-12

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