EP3224846B1 - Dispositif de commutation - Google Patents

Dispositif de commutation Download PDF

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Publication number
EP3224846B1
EP3224846B1 EP15798446.9A EP15798446A EP3224846B1 EP 3224846 B1 EP3224846 B1 EP 3224846B1 EP 15798446 A EP15798446 A EP 15798446A EP 3224846 B1 EP3224846 B1 EP 3224846B1
Authority
EP
European Patent Office
Prior art keywords
switching element
switching
chamber
guide body
axis
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
EP15798446.9A
Other languages
German (de)
English (en)
Other versions
EP3224846A1 (fr
Inventor
Ralf Thar
Ute MOLITOR
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 Intelligent Power Ltd
Original Assignee
Eaton Intelligent Power Ltd
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 Eaton Intelligent Power Ltd filed Critical Eaton Intelligent Power Ltd
Priority to PL15798446T priority Critical patent/PL3224846T3/pl
Publication of EP3224846A1 publication Critical patent/EP3224846A1/fr
Application granted granted Critical
Publication of EP3224846B1 publication Critical patent/EP3224846B1/fr
Active 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
    • 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
    • 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
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/30—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting within supporting guides

Definitions

  • the present invention relates to a switching device according to the preamble of claim 1.
  • Electrical switching devices are components in a circuit which establish an electrically conductive connection between fixed contacts (switching state “ON” or “ON state”) or separate (switching state “OFF” or “OFF state”).
  • switching state "ON” or “ON state” switching state "ON state”
  • switching state "OFF” or “OFF state” switching state "OFF state”
  • a switching device is for example from the WO 2012/076605 A1 known.
  • the known switching device comprises a switching chamber in which a plate-shaped switching element can be moved back and forth along a linear movement axis between an ON position and an OFF position. In the ON position, the switching element connects fixed contacts to one another, whereas in the OFF position, the switching element is separated from the fixed contacts to separate the current-carrying connection.
  • the switching element can be moved linearly via an actuating means within the switching chamber and is biased in the direction of the axis of movement by means of a spring.
  • the switching element biased by the spring can slip out of its installed position. Specifically, the switching element is accelerated by the external forces and compresses the spring. The switching element can rotate about its longitudinal axis and tilt in the switching chamber or jam between the spring and a wall of the switching chamber. From this position, the switching element will generally not slip back into its original installation position on its own, so that this basically leads to failure of the switching device.
  • a switching device with a movably guided switching element is known.
  • the switching element is biased by a spring which is supported between a shoulder of a contact carrier and a U-shaped bracket.
  • the U-shaped bracket is to ensure centering for the spring and protection against tilting movements of the switching element.
  • the object of the present invention is to provide a maintenance-friendly switching device.
  • This object is achieved according to the invention in a switching device of the type mentioned at the outset in that the switching element is plate-shaped and in that the guide body has an outer cross section which at least substantially corresponds to the inner cross section of the switching chamber.
  • the guide means hold the switching element in an installed position in which the switching element can be moved linearly back and forth along the ON position and the OFF position and is always preloaded by the spring means.
  • the switching element which is usually made of an electrically conductive material, establishes an electrical connection between fixed contacts, in particular two fixed contacts.
  • the switching element In the OFF position, the switching element is spaced from the fixed contacts, so that an electrical connection between the fixed contacts is interrupted.
  • the switching element is held in the switching chamber by the guide means in such a way that the two main directions of extension of the plate-shaped switching element are at least substantially perpendicular to the axis of movement.
  • the switching element is plate-shaped, so that the two main directions of extension are to be understood as the length and the width of the switching element.
  • the plate-shaped switching element thus has a relatively small extension in the direction of the main axis in relation to the two main directions of extension, which can also be referred to as the thickness or thickness of the switching element.
  • the main axis of the switching element which is a normal to a plane spanned by the two main directions of extension, is oriented at least substantially parallel to the movement axis.
  • the switching element is preferably always held in the installed position by the guide means, in which the main axis is aligned parallel to the movement axis.
  • the guide means can also allow the switching element in the switching chamber to be tilted to a certain extent about a longitudinal axis of the switching element that runs transversely to the main axis.
  • the guiding means ensure that the switching element can only tilt to such an extent that the switching element in the switching chamber is not tilted or slips under the spring means. From this slightly tilted position, in which the main axis runs at least substantially parallel to the axis of movement, the switching element automatically returns to the installed position after vibration and can therefore continue linearly between the ON position and the OFF position without intervention from outside Switching chamber can be moved back and forth.
  • the plate-shaped guide body has an outer cross section which corresponds at least substantially to the inner cross section of the switching chamber.
  • the guide body has an undersize in relation to the switching chamber such that the guide body can slide along the axis of movement.
  • a tilt angle formed between the main axis and the movement axis is between 0 and 30 °, in particular a maximum of 10 °.
  • the main axis of the switching element thus runs at least substantially parallel to the movement axis when the tilt angle is between 0 and 30 °, in particular between 0 and a maximum of 10 °.
  • the guide means are preferably arranged on a side of the switching element facing the spring means. This reliably prevents the switching element from slipping under the spring means. In addition, the guide means can then also assume a holding function for the spring means in order to hold the spring means in a predetermined position with respect to the switching element.
  • a ratio between an extension of the guide means in the direction of the main axis and an extension of the switching element in the direction of the main axis is greater than or equal to 1.5: 1.
  • the guiding means can comprise several means for guiding the switching element, it being sufficient if one of the guiding means has a ratio between an extension of the guiding means in the direction of the main axis and an extension of the switching element in the direction of the main axis greater than or equal to 1.5: 1.
  • the guide means can also have just one guide means that has the aforementioned ratio of at least 1.5: 1.
  • the guide means can thus be at least one and a half times thicker than the switching element.
  • the thickness of the guide means depends on the structural conditions of the switching chamber and the thickness of the switching element, the guide means the tilting of the switching element prevent and in particular do not hinder the linear movement of the switching element between the ON position and the OFF position.
  • the guide means are preferably at least three times, in particular four times thicker than the switching element, i.e.
  • the ratio between the extension of the guide means in the direction of the main axis and the extension of the switching element in the direction of the main axis is at least 3: 1, in particular 4: 1.
  • the ratio between the extension of the guide means in the direction of the main axis and the extension of the switching element in the direction of the main axis is preferably at most 5: 1.
  • the guide elements can be arranged on the side of the guide body facing the switching element.
  • the guide means have a columnar basic shape and are arranged on the edge of the guide body.
  • a plate-shaped guide body can have four column-shaped guide elements arranged in the corners of the guide body, which extend on a side of the guide body which faces away from the switching element in the direction of the main axis of the switching element.
  • the greater the extension of the guide elements in the direction of the main axis the better the switching element is secured against tipping in the switching chamber. In other words, the longer the guide elements, the smaller the maximum tilt angle.
  • the guide elements are preferably stiff, as a result of which the tilting protection of the switching element is further improved. It is also advantageous in this embodiment that the guide elements define a holding space between them in which the spring means, for example a helical spring, are held.
  • the guide means and the switching element are separate components.
  • Known switching devices can thus be retrofitted with the guide means according to the invention.
  • the guide body and the switching element come into abutment.
  • the guide means, in particular the guide body can be loosely in contact with the switching element or connected, in particular glued, to the switching element.
  • the Guide means are connected to the switching element.
  • the guide means can be an integral part of the switching element.
  • the switching device can be one of the components of an electrical switching device with double interruption.
  • the switching device can be an auxiliary switch, a circuit breaker, a contactor, in particular an auxiliary contactor.
  • the switching device according to the invention is a component of an electrical switching device with double interruption which is known per se and is not shown here.
  • the switching device according to the invention has a switching element 1, which in a switching chamber 2 along a linear movement axis Z between an ON position, in which the switching element 1 electrically connects two not shown fixed contacts of the switching device, and an OFF position, in which the switching element 1 is spaced from the fixed contacts, is movable back and forth.
  • the switching device has a carrier housing 3.
  • the carrier housing 3 which can also be called a switching bridge, is in the Switching device movably arranged along an axis of movement Z.
  • Four of the switching chambers 2 are arranged next to one another in the carrier housing 3.
  • the switching chambers 2 are constructed identically and have an elongated basic shape which extends along the movement axis Z.
  • the switching chambers 2 are open at a front and a rear of the carrier housing 3.
  • a stop element 4 is arranged in each of the switching chambers 2, which at least roughly divides the respective switching chamber 2 into an upper third and a lower two thirds.
  • the carrier housing 3 is electrically insulated from the switching chambers 2 and can, for example, be made of a plastic.
  • FIG 1 For example, only a single switching element 1 is used in the left switching chamber 2, it being possible in principle for a switching element 1 to be arranged in several or all switching chambers 2.
  • the switching elements 1 can be movable not only in the upper third of the switching chamber 2, but also in the lower two thirds of the respective switching chamber 2 along the linear movement axis Z.
  • the plate-shaped switching element 1 has two main directions of extension X, Y, namely in the direction of a longitudinal extension L of the switching element 1 and a transverse extension B of the switching element 1, the longitudinal extension L being greater than its transverse extension B due to the elongated configuration of the switching element 1.
  • the switching element 1 has a relatively small extension D in the direction of a main axis N, wherein the extension D can also be referred to as the strength or thickness of the switching element 1.
  • the main axis N is perpendicular to a plane E, which is spanned by the two main directions X, Y, and is thus a normal to the plane E.
  • the main axis N and the movement axis Z coincide, that is, the switching element 1 is not tilted. This position is the installation position of the switching element 1, in which the switching element 1 can be moved back and forth along the linear movement axis Z between the ON position and the OFF position.
  • the switching element 1 protrudes on the open front side and the open rear side of the carrier housing 2 and has contact areas 6, 7 on both sides of the lower end 5, which, in the ON position, make contact with the fixed contacts for establishing the electrical connection stand.
  • the switching element 1 is biased in the switching chamber 2 by a coil spring 8 in the direction of the axis of movement Z.
  • the helical spring 8 is supported on an upper wall 9 of the carrier housing 3 and guide means 10, which are arranged between the helical spring 8 and the switching element 1.
  • the guide means 10 have a plate-shaped guide body 11, the guide body 11 having a small undersize having an outer cross section corresponding to the inner cross section of the switching chamber 2.
  • the undersize is selected so that the guide body 11 can slide in the switching chamber 2 along the movement axis Z.
  • the guide body 11 is in flat contact with an upper side 12 of the switching element 1 opposite the underside 5 of the switching element 1, the guide body 11 and the switching element 1 being two separate components. In the installed position, the guide body 11 and the switching element 1 are loosely in contact with one another, the guide body 11 being pressed against the upper side 12 of the switching element 1 by the helical spring 8.
  • the carrier housing 3, the switching element 1, the guide means 10 and the coil spring 8 are shown in an exploded view. It can be seen that the switching element 1 has two projections 14 on each of the two opposite side surfaces 13. Corresponding to the projections 14, the carrier housing 3 has two side walls 15, 16 on the side walls 15, 16 delimiting the switching chambers 2, two recesses 17 extending in the direction of the movement axis Z, into which the projections 17 in the installed position of the switching element 1 for guiding the switching element 1 engage along the axis of movement Z.
  • the guide means 10 have four columnar guide elements 18 which extend in the direction of the main axis N and which are arranged on an outer surface 19 of the guide body 11 pointing away from the switching element 1.
  • the guide elements 18 protrude in four corners of the at least substantially rectangular guide body 11 such that the projections 14 of the switching element 1 with the guide elements 18 are in the installed position of the switching element 1, in which the guide means 10 are arranged between the switching element 1 and the helical spring 8, cover viewed in the direction of the main axis N.
  • the sides of the column-shaped guide elements 18 and the guide body 11 facing the side walls 15, 16 of the carrier housing 3 thus form guide surfaces 24, via which the switching element 1 is guided in the switching chamber 2 along the movement axis Z.
  • the ratio between an extension of the guide means 10 in the direction of the main axis N and the thickness D of the switching element 1 is approximately 4: 1, so that the guide surfaces 24 of the guide means 10 in the direction of the main axis N are three times wider than the side surfaces 13 of the narrow one Switching element 1 are.
  • a holding space 20 is defined between the columnar guide elements 11, which is delimited on the underside facing the switching element 1 by the outer surface 19 of the guide body 11.
  • the coil spring 8 engages in the holding space 20 and is thus held at its longitudinal end facing the switching element 1.
  • this is held by a pin 21, which is arranged on the top wall 9 of the carrier housing 3 and protrudes into the switching chamber 2.
  • each switching chamber 2 is also assigned a pin 21 on a lower wall 23 of the carrier housing 3, the pins 21 also projecting into the switching chamber 2 and for fixing a helical spring 8 arranged in the lower part of the switching chamber 2, as is exemplified in FIG Figure 4 is shown.
  • the switching device For the linear movement of the switching element 4 within the respective switching chamber 2, the switching device comprises a driver element 25 arranged on the lower wall 23 of the carrier housing 3, which can be coupled to a claw of the switching device, not shown here.
  • a switch position indicator 22 is arranged on the top wall 9 of the carrier housing 3, which visually indicates whether the switch element has assumed the ON position or the OFF position.
  • the switching element 1 When the switching device is in operation, the switching element 1 is in the installed position in which the switching element 1 is prestressed against the stop element 4 by the helical spring 8.
  • the main axis N of the switching element 1 is in the in Figure 1 shown Installation position aligned parallel to the Z axis of movement.
  • a tilt angle ⁇ is formed between the now tilted main axis N and the movement axis Z, which here is approximately 10 °.
  • the guide surfaces 24 of the guide means 10 which are larger in relation to the side surfaces of the switching element 1, prevent the switching element 1 from tilting further over the 10 ° shown here and thereby ensure that the switching element 1 does not slip under the coil spring 8. In this way, the switching element 1 can at most take a slightly tilted position within the switching chamber 2, from which it can return to its original installation position independently, or by itself without any further action from the outside.
  • one of the switching elements 1 is used as an example in the left three switching chambers 2.
  • the tilted switching element 1 is shown here in the right-hand switching chamber 2 in a simplified manner without the helical spring 9 compressed in this case, only to clarify the functioning of the anti-tipping device by the guide means 10.

Landscapes

  • Push-Button Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)

Claims (7)

  1. Dispositif de commutation comprenant une chambre de commutation (2), un élément de commutation (1) qui peut être déplacé dans la chambre de commutation (2) le long d'un axe de déplacement linéaire (Z) entre une position MARCHE, dans laquelle l'élément de commutation (1) relie des contacts fixes entre eux, et une position ARRÊT, dans laquelle l'élément de commutation (1) est espacé des contacts fixes, des moyens d'actionnement (25) destinés à déplacer linéairement l'élément de commutation (1) à l'intérieur de la chambre de commutation (2), des moyens à ressort (8) exerçant une précontrainte sur l'élément de commutation (1) en direction de l'axe de déplacement (Z), et des moyens de guidage (10) conçus de sorte que l'élément de commutation (1) est guidé de façon mobile linéairement dans la chambre de commutation (2) le long de l'axe de déplacement (Z), les moyens de guidage (10) formant une protection contre le basculement pour l'élément de commutation (1) et étant conçus de sorte que l'élément de commutation (1) est maintenu dans la chambre de commutation (2) le long de l'axe de déplacement (Z) de sorte qu'un axe principal (N) de l'élément de commutation (1), qui s'étend perpendiculairement aux deux directions principales (X, Y) de l'élément de commutation (1), est orienté au moins sensiblement parallèlement à l'axe de déplacement (Z), de sorte que, lorsque des forces agissent de l'extérieur sur le dispositif de commutation, l'élément de commutation (1) ne peut basculer que dans une mesure telle qu'il ne bascule pas dans la chambre de commutation (2) ou ne glisse pas sous l'effet des moyens à ressort (8), les moyens de guidage (10) présentant un corps de guidage (11) disposé entre les moyens à ressort (8) et l'élément de commutation (1) et présentant une forme de base en forme de plaque, une pluralité d'éléments de guidage (18) s'étendant dans la direction de l'axe principal (N) étant disposés sur le corps de guidage (11) et faisant saillie sur un côté (19) du corps de guidage (11) opposé à l'élément de commutation (1), caractérisé en ce que l'élément de commutation (1) est conçu en forme de plaque, et en ce que le corps de guidage (11) présente une section extérieure correspondant au moins sensiblement à la section intérieure de la chambre de commutation (2).
  2. Dispositif de commutation selon la revendication 1, caractérisé en ce qu'un rapport entre une extension des moyens de guidage (10) en direction de l'axe principal (N) et une extension de l'élément de commutation (1) en direction de l'axe principal (N) est supérieur ou égal à 1,5:1.
  3. Dispositif de commutation selon la revendication 1 ou 2, caractérisé en ce que le corps de guidage (11) est librement en contact avec l'élément de commutation (1).
  4. Dispositif de commutation selon l'une quelconque des revendications précédentes, caractérisé en ce que les éléments de guidage (18) présentent une forme de base en colonne et sont disposés côté bord sur le corps de guidage (11).
  5. Dispositif de commutation selon l'une quelconque des revendications précédentes, caractérisé en ce que les éléments de guidage (18) définissent entre eux un espace de maintien (20) dans lequel les moyens à ressort (8) sont maintenus.
  6. Dispositif de commutation selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens de guidage (10) et l'élément de commutation (1) sont des composants séparés.
  7. Dispositif de commutation selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les moyens de guidage (10) sont reliés à l'élément de commutation (1).
EP15798446.9A 2014-11-28 2015-11-24 Dispositif de commutation Active EP3224846B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15798446T PL3224846T3 (pl) 2014-11-28 2015-11-24 Urządzenie przełączające

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014117497.6A DE102014117497A1 (de) 2014-11-28 2014-11-28 Schaltvorrichtung
PCT/EP2015/077473 WO2016083357A1 (fr) 2014-11-28 2015-11-24 Dispositif de commutation

Publications (2)

Publication Number Publication Date
EP3224846A1 EP3224846A1 (fr) 2017-10-04
EP3224846B1 true EP3224846B1 (fr) 2020-07-29

Family

ID=54697580

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15798446.9A Active EP3224846B1 (fr) 2014-11-28 2015-11-24 Dispositif de commutation

Country Status (6)

Country Link
US (1) US10049827B2 (fr)
EP (1) EP3224846B1 (fr)
CN (2) CN109585189B (fr)
DE (1) DE102014117497A1 (fr)
PL (1) PL3224846T3 (fr)
WO (1) WO2016083357A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11335518B2 (en) * 2020-09-08 2022-05-17 Rockwell Automation Switzerland Gmbh Switching element guide
DE102021128179A1 (de) * 2021-10-28 2023-05-04 Te Connectivity Germany Gmbh Schaltkontaktbaugruppe für ein elektrisches Schaltelement und elektrisches Schaltelement

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840657A (en) * 1955-03-23 1958-06-24 Illinois Tool Works Two circuit snap switch
DE1154553B (de) * 1961-06-27 1963-09-19 Licentia Gmbh Kontakttraeger mit beweglichen Kontakten, z. B. bei elektrischen Leistungsschaltern
CH445607A (de) 1966-01-25 1967-10-31 Siemens Ag Kontaktbrückenanordnung
JPS6116841U (ja) * 1984-06-20 1986-01-31 三菱電機株式会社 可動接触子の保持構造
IT1238322B (it) * 1990-01-19 1993-07-12 Bremas Spa Punteria in particolare per la cooperazione con alberi a camme in commutatori elettrici, interruttori o similari
DE102009023073A1 (de) * 2009-05-28 2010-12-02 Eaton Industries Gmbh Brückenkontaktsystem
EP2463879A1 (fr) 2010-12-07 2012-06-13 Eaton Industries GmbH Commutateur doté d'une chambre d'extinction
FR2974445B1 (fr) * 2011-04-21 2017-05-12 Legrand France Contact electrique resistant aux chocs
CN103988274A (zh) 2012-03-21 2014-08-13 西门子公司 用于开关单元的、特别是用于断路器的接触滑块单元
EP2704171A1 (fr) * 2012-08-29 2014-03-05 Siemens Aktiengesellschaft Unité à curseur de contact pour une unité de commutation, notamment pour un disjoncteur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN109585189B (zh) 2020-05-08
EP3224846A1 (fr) 2017-10-04
US10049827B2 (en) 2018-08-14
WO2016083357A1 (fr) 2016-06-02
PL3224846T3 (pl) 2021-01-11
CN107004520B (zh) 2018-11-23
CN109585189A (zh) 2019-04-05
DE102014117497A1 (de) 2016-06-02
CN107004520A (zh) 2017-08-01
US20170345586A1 (en) 2017-11-30

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