EP2513940B1 - Support pour un commutateur électromagnétique - Google Patents

Support pour un commutateur électromagnétique Download PDF

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Publication number
EP2513940B1
EP2513940B1 EP10706565.8A EP10706565A EP2513940B1 EP 2513940 B1 EP2513940 B1 EP 2513940B1 EP 10706565 A EP10706565 A EP 10706565A EP 2513940 B1 EP2513940 B1 EP 2513940B1
Authority
EP
European Patent Office
Prior art keywords
end portion
leg
contact element
frame
holder
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.)
Not-in-force
Application number
EP10706565.8A
Other languages
German (de)
English (en)
Other versions
EP2513940A1 (fr
Inventor
Chintamani Bivalkar
Noah Ramrajkar
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP2513940A1 publication Critical patent/EP2513940A1/fr
Application granted granted Critical
Publication of EP2513940B1 publication Critical patent/EP2513940B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2008—Facilitate mounting or replacing contact bridge and pressure spring on carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements

Definitions

  • the present invention relates to a holder for holding a contact element in an electromagnetic switching device.
  • An electromagnetic switching device is typically used for controlling flow of electrical current in an electrical circuit.
  • the electromagnetic switching device is controllable for switching between on and off states for closing and breaking a power supply circuit.
  • the electromagnetic switching device may be manually or electrically controlled.
  • magnets may be employed to actuate a movable contact element for breaking and closing the power supply circuit.
  • the movable contact element is moved to engagement with a stationary contact element for closing the power supply circuit.
  • the stationary contact element is electrically connected to the power supply.
  • the power supply circuit is closed when movable contact element is in engagement with the stationary contact element.
  • the frame of the holder is circumferentially closed, and thus, the frame is closed on all sides.
  • the compressible material is arranged inside the frame at the first end portion of the frame such that the frame encloses the compressible material.
  • the surface of the first end portion onto which the compressible material is arranged is planar, and thus, compressible material of various sizes and types may be arranged at the first end portion of the frame.
  • the contact element is removably received between compressible material and the second end portion.
  • the second end portion is opposite to the first end portion.
  • the compressible material applies a biasing force onto the contact element.
  • an electromagnetic switching device comprising the holder may be adapted to be used for controlling a wide range of supply power by replacing the compressible material as per the biasing force desired on the contact element.
  • the frame is formed of a single piece of material.
  • the frame is formed of a single piece, i.e., the frame is manufactured using a single a piece of material.
  • the frame comprises only a single part and provides the advantage of easy detachment of the contact element 3 as no parts of the frame are to be detached or removed. Additionally, forming the frame using a single piece of material enables in easy manufacturing of the frame.
  • the frame comprises a first leg and a second leg at both sides of the compressible material, wherein the first leg and the second leg connect to the first end portion and the second end portion.
  • the first leg may be at one side and the second leg may be at the other side of the compressible material.
  • first leg and the second leg are parallel.
  • first leg and the second leg may be parallel to each other.
  • first leg and the second leg may connect to the first and portion and the second end portion to form a rectangular cross section.
  • first end portion and the second end portion connected by the legs form a circumferentially closed frame.
  • the first end portion is formed by a first portion extending from the first leg via a first bend and a second portion extending from the second leg via a second bend, wherein the first portion and the second portion overlap.
  • the first leg may be bended to form the first portion via the first bend and the second leg may be bended to form the second portion via the second bend.
  • the first bend and the second bend are such that the first portion is substantially perpendicular to the first leg and the second portion is substantially perpendicular to the second leg.
  • the frame further comprises a third potion extending from the first portion via a third bend, wherein the third portion overlaps with a portion of the second leg.
  • the third portion is formed by bending the first portion at the third bend. The third portion overlaps with the second leg to provide additional rigidity to the first end portion.
  • the second end portion is formed by a transverse section joining the first leg and the second leg.
  • the transverse portion may be a U-shaped cross section joining the parallel legs.
  • the second end portion further comprises a ridge extending inwardly to support the contact element.
  • the ridge supports the contact element when the contact element is positioned inside the frame.
  • the compressible material is selected from the group consisting of a spring and an elastomer.
  • spring of various sizes and shapes may be arranged at the first end portion.
  • elastomers of various sizes may be arranged at the first end portion.
  • springs, elastomers or any elastic material or various sizes and shaped may be arranged at the first end portion.
  • Another embodiment includes a carrier operative for breaking and closing a power supply circuit in an electromagnetic switching device comprising the holder for holding the contact element, the carrier comprising a socket to movably receive the holder, a shoulder formed on the socket to act against the compressible material, and wherein, the frame is displaceable against the action of the compressible material for detaching the contact element.
  • the contact element may be easily detached from the holder in case the contact element is to be replaced.
  • Another embodiment includes an electromagnetic switching device comprising the holder for holding the contact element.
  • a carrier 1 of an electromagnetic switching device is illustrated according to an embodiment herein.
  • a contact element 3 is supported in the carrier to be movable form a circuit breaking position to a circuit closing position, wherein the contact element 3 is moved to be in contact with a stationary contact element to be in the circuit closing position.
  • the stationary contact may be connected to the input power supply.
  • FIG 1b illustrates an assembly of an electromagnet system and the carrier 1 of FIG 1a according to an embodiment herein.
  • the carrier 1 comprises a column 7 extending vertically upwards.
  • the electromagnet system 8 is supported on the column 7 to actuate the carrier.
  • the electromagnet system 8 is shown as comprising electromagnetic armatures 9, 13.
  • the electromagnet system 8 may be designed in another way comprising fewer or more electromagnetic armatures.
  • the electromagnetic armatures 9, 13 are adapted to actuate the carrier 1.
  • the electromagnetic armature 9 engages the column 7 via a member 11 for transferring the armature 9 movements to the carrier 1.
  • the carrier 1 in turn moves the contact element 3 into the circuit closing position.
  • the electromagnetic armature 9 is in engagement with the column mechanically via the member 11.
  • the electromagnetic armature 9 may be engaged with the column 7 using other known mechanical means.
  • Another electromagnetic armature 13 comprising coils 17 is also supported on the column 7.
  • the magnetic armature may comprise only a single coil 17.
  • the coils 17 are energized by supplying a current provided by a supply source.
  • the electromagnetic armature 9 is drawn towards the electromagnetic armature 13. This movement of the armature 9 is transferred to the carrier 1 and to the contact element 3 for the circuit closing motion.
  • the carrier 1 may comprise a column extending vertically downwards and the electromagnetic armature 9 and the electromagnetic armature 13 may be supported on the column.
  • the contact element 3 is supported in a socket 19 extending from the bottom of the carrier 1.
  • the socket 19 receives a holder 21 for holding the contact element 3 such that the holder 21 is movable in the socket 19.
  • FIG 2a illustrates the holder 21 in detail according to an embodiment herein.
  • the holder 21 comprises a frame 23, comprising a first leg 25 and a second leg 27 in two opposite sides, a first end portion 29 and a second end portion 31.
  • the first leg 25 and the second leg 27 are parallel to each other and connect to the first end portion 29 and to the second end portion 31.
  • the first leg 25 and the second leg 27 may connect to the first end portion 29 and to the second end portion 31 such that the first leg 25 and the second leg 27 may not be parallel to each other.
  • the frame 23 may be formed using a single piece of material.
  • the frame 23 may be circumferentially closed, formed using a single piece of material.
  • the frame comprises only a single part and provides the advantage of easy detachment of the contact element 3 as no parts of the frame are to be detached or removed.
  • a single piece of material may be bended to form the first leg 25 and the second leg 27 and the first end portion 29 and the second end portion 31.
  • the frame 23 may comprise a rectangular cross section. Forming the frame 23 using a single piece of material enables in easy manufacturing of the frame 23.
  • the second end portion 31 may be formed as a transverse section 33 joining the first leg 25 and the second leg 27.
  • the transverse section 33 may comprise a U-shaped cross section.
  • the first end portion 29 may be formed by overlapping portions of a first portion 35 and a second portion 37.
  • the first portion 35 may extend from the first leg 25 via a first bend 41 and the second portion may extend from the second leg 27 via a second bend 43.
  • the bends 41, 43 are such that the first portion 35 and the second portion 37 are substantially perpendicular to the first leg 25 and the second leg 27 respectively.
  • one of the portions 35, 37 may comprise a third portion extending via a third bend to overlap with a portion of the other leg.
  • the third portion 39 may extend from the first portion 35 via the third bend 45 and overlap with a portion of the second leg 27.
  • the third bend 45 may be such that the third portion is substantially perpendicular to the first portion 35.
  • the third portion 39 overlapping with the second leg 27 provides additional rigidity to the first end portion 29.
  • the first end portion 29 may be formed by a transverse section joining the legs 25, 27 and the second end portion 31 may be formed by overlapping portions extending via bends from the first leg 25 and the second leg.
  • first end portion 29 and the second end portion 31 may be formed by transverse sections joining the legs 25, 27.
  • first end portion 29 and the second end portion 31 are transverse sections, the ends of the circumferentially closed frame 23 may join at either of the legs 25, 27.
  • the ends of the frame 23 may join at either of the legs 25, 27 by overlapping with each other.
  • a compressible material 47 is arranged inside the frame 23 at a first end portion 29.
  • the surface of the first end portion 29 onto which the compressible material 47 is arranged is substantially planar.
  • the planar surface of the first end portion 29 onto which the compressible material 47 is arranged may be substantially even or flat.
  • the planar surface of the first end portion 29 onto which the compressible material 47 is arranged may be corrugated or uneven.
  • the corrugation may be designed such that additional grip is provided to the compressible material 47.
  • the planar surface enables compressible materials of different sizes to be arranged at the first end portion 29.
  • the compressible material 47 may be a spring, such as a helical spring. Helical springs formed of wires of different thickness may be arranged inside the frame 23 as the surface of the first end portion 29 is substantially planar. The planar surface of the first end portion 29 may receive springs formed of wires of different thickness.
  • the compressible material 47 may be an elastomer or other material having elastic property.
  • the first end portion 29 being substantially planar enable arranging different kinds of compressible materials of different thickness inside the frame 23 of the holder 21.
  • the electromagnetic switch can be configured to be used for controlling a wide range of supply power by replacing the compressible material.
  • the compressible material may be replaced to increase or decrease the contact pressure applied onto the contact element 3.
  • a compressible material capable of applying relatively higher bias increases the contact pressure applied onto the contact element 5.
  • the pressure at which the contact element 5 engages the stationary contact element may be varied by using different compressible materials for requirement of different biasness.
  • FIG 2b illustrates a side view of the holder 21 of FIG 2a seen along the direction X according to an embodiment.
  • the frame 23 comprises a ridge 49 extending inwardly from the second end portion 31 of the frame 23.
  • the ridge 49 supports the contact element 3 of Fig 2a when the contact element 3 is positioned inside the frame 23.
  • FIG 3 illustrates the holder 21 holding the contact element 3 according to an embodiment.
  • the contact element 3 is removably received between the compressible material 47 and the second end portion 31 of the frame 23 of the holder 21.
  • the contact element 3 is held between the compressible material 47 and the second end portion 31 of the frame 23.
  • the contact element 3 is biased by the compressible material 47, and thus, the contact element 3 is held between the compressible material 47 and the second end portion 31 of the frame 23.
  • the ridge 49 of FIG 2b is engaged with the contact element 3 to support the contact element 3 within the frame 23.
  • the ridge 49 may pivotally support the contact element 3.
  • FIG 4 illustrates a sectional view of the carrier 1 of FIG 1a along the plane I-I.
  • the holder 21 is movably received in the socket 19.
  • the socket 19 comprises a pair of shoulders 51, 53 to provide a counter support to the compressible material 47.
  • the frame 23 of the holder 21 is displaceable against the action of the compressible material 47, as the shoulders 51, 53 arrests the compressible material 47. This enables detachment of the contact element 3 with ease from the socket 19.
  • the detaching of the contact element 3 from the socket 19 does not require any dismantling of the parts of the carrier 1 or the holder 21.
  • the detaching of the contact element 3 from the socket 19 does not require use of any tools.
  • the compressible material 47 is arrested by the shoulders 51, 53 and the holder 21 is displaced against the action of the compressible material 47.
  • the contact element 3 may be detached from the socket 19 easily.
  • no tools are required for detaching of the contact element 3 from the socket 19. This enables in detachment of the contact element 3 with ease.
  • the embodiments described herein enable compressible material of different types to be used for biasing a contact element of an electromagnetic switching device.
  • compressible materials of varying sizes may also be arranged inside the frame of the holder.
  • the electromagnetic switching device may be adapted to be used for controlling a wide range of supply power by replacing the compressible material as per the biasing force desired on the contact element.
  • the desired biasing force may be obtained by using a suitable compressible material.
  • the biasing force applied onto the contact element can be varied to vary the contact pressure of the contact element depending on the power rating for which the electromagnetic switching device is to be used.
  • forming the frame using a single piece of material enables in easy manufacturing of the frame.
  • the contact element may be detached easily from the socket of the carrier without requirement of any special tools. This assists in easy replacement of the contact element.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Push-Button Switches (AREA)
  • Micromachines (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Mechanisms For Operating Contacts (AREA)

Claims (10)

  1. Support (21) destiné à maintenir un élément de contact (3) dans un dispositif de commutation électromagnétique, le support (21) comprenant :
    - une armature fermée circonférentiellement (23) comportant une première partie d'extrémité (29) et une deuxième partie d'extrémité (31) opposée à la première partie d'extrémité (29), et
    - un matériau compressible (47) agencé à l'intérieur de l'armature au niveau de la première partie d'extrémité de l'armature (23),
    dans lequel l'élément de contact (3) est reçu de manière amovible entre le matériau comprimé (47) et la deuxième partie d'extrémité (31), la deuxième partie d'extrémité (31) de l'armature (23) étant opposée à la première partie d'extrémité (29) et l'armature (23) étant formée d'un seul bloc de matériau,
    caractérisé en ce que toute la surface de la première partie d'extrémité (29) sur laquelle le matériau compressible (47) est agencé est plane.
  2. Support selon la revendication 1, dans lequel l'armature (23) comprend une première patte (25) et une deuxième patte (27) des deux côtés du matériau compressible (47), la première patte (25) et la deuxième patte (27) se raccordant à la première partie d'extrémité (29) et à la deuxième partie d'extrémité (31).
  3. Support selon la revendication 2, dans lequel la première patte (25) et la deuxième patte (27) sont parallèles.
  4. Support selon l'une quelconque des revendications 2 à 3, dans lequel la première partie d'extrémité (29) est formée d'une première partie (35) s'étendant depuis la première patte (25) par le biais d'un premier coude (41) et d'une deuxième partie (37) s'étendant depuis la deuxième patte (27) par le biais d'un deuxième coude (43), la première partie (35) et la deuxième partie (37) se chevauchant.
  5. Support selon la revendication 4, dans lequel l'armature comprend en outre une troisième partie (39) s'étendant depuis la première partie (35) par le biais d'un troisième coude (45), la troisième partie (39) chevauchant une partie de la deuxième patte (27).
  6. Support selon l'une quelconque des revendications 2 à 5, dans lequel la deuxième partie d'extrémité (31) est formée d'un tronçon transversal (33) joignant la première patte (25) et la deuxième patte (27).
  7. Support selon l'une quelconque des revendications 2 à 6, dans lequel la deuxième partie d'extrémité (31) comprend en outre une crête (49) s'étendant vers l'intérieur pour servir de soutien à l'élément de contact (3).
  8. Support selon l'une quelconque des revendications précédentes, dans lequel le matériau compressible (47) est choisi dans le groupe constitué par un ressort et un élastomère.
  9. Elément porteur (1) utilisable pour rompre et fermer un circuit d'alimentation électrique dans un dispositif de commutation électromagnétique comprenant le support (21) destiné à maintenir l'élément de contact 93) selon l'une quelconque des revendications 1 à 8, l'élément porteur (1) comprenant :
    - une douille (19) pour recevoir de façon amovible le support (21), et
    - un épaulement (51, 53) formé sur la douille (19) pour agir à l'encontre du matériau compressible (47),
    dans lequel l'armature (23) est déplaçable à l'encontre de l'action du matériau compressible (47) pour détacher l'élément de contact (3).
  10. Dispositif de commutation électromagnétique comprenant le support (21) destiné à maintenir l'élément de contact (3) selon l'une quelconque des revendications 1 à 9.
EP10706565.8A 2010-02-05 2010-02-05 Support pour un commutateur électromagnétique Not-in-force EP2513940B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/051430 WO2011095219A1 (fr) 2010-02-05 2010-02-05 Support pour un dispositif de commutation électromagnétique

Publications (2)

Publication Number Publication Date
EP2513940A1 EP2513940A1 (fr) 2012-10-24
EP2513940B1 true EP2513940B1 (fr) 2017-09-06

Family

ID=42830695

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10706565.8A Not-in-force EP2513940B1 (fr) 2010-02-05 2010-02-05 Support pour un commutateur électromagnétique

Country Status (5)

Country Link
EP (1) EP2513940B1 (fr)
KR (1) KR101565291B1 (fr)
CN (1) CN102754177B (fr)
BR (1) BR112012019683B1 (fr)
WO (1) WO2011095219A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2729952B1 (fr) * 2011-12-14 2016-03-30 Siemens Aktiengesellschaft Commutateur électrique agencé pour un remplacement efficace de contact
DE102014219911A1 (de) * 2014-10-01 2016-04-07 Siemens Aktiengesellschaft Kontaktanordnung für ein elektromechanisches Schaltgerät
WO2019180934A1 (fr) * 2018-03-23 2019-09-26 三菱電機株式会社 Commutateur de contact

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05128956A (ja) * 1991-11-05 1993-05-25 Mitsubishi Electric Corp 可動接触子支持機構
JPH1040794A (ja) * 1996-07-22 1998-02-13 Fuji Electric Co Ltd 電磁接触器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1322323A (fr) * 1962-02-16 1963-03-29 Cem Comp Electro Mec Perfectionnement aux contacts mobiles pour contacteurs ou autres appareils analogues
DE4322935C2 (de) * 1993-07-09 1995-10-26 Kloeckner Moeller Gmbh Kontaktsystem für ein elektromagnetisches Schaltgerät mit Schnellauslöser
SE516457C2 (sv) * 1999-01-28 2002-01-15 Asea Brown Boveri Brytare i kontaktor
US20030184075A1 (en) * 2002-03-27 2003-10-02 Freeman Richard B. Frame member having overlapping reinforcement sections
JP2004127812A (ja) 2002-10-04 2004-04-22 Fuji Electric Holdings Co Ltd 電磁接触器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05128956A (ja) * 1991-11-05 1993-05-25 Mitsubishi Electric Corp 可動接触子支持機構
JPH1040794A (ja) * 1996-07-22 1998-02-13 Fuji Electric Co Ltd 電磁接触器

Also Published As

Publication number Publication date
KR20120123544A (ko) 2012-11-08
EP2513940A1 (fr) 2012-10-24
BR112012019683B1 (pt) 2019-07-02
WO2011095219A1 (fr) 2011-08-11
BR112012019683A2 (pt) 2016-05-03
CN102754177A (zh) 2012-10-24
CN102754177B (zh) 2015-09-30
KR101565291B1 (ko) 2015-11-04

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