EP3182433B1 - Federführungsvorrichtung in einem betätigungsmechanismus und damit versehenes elektrisches schutzgerät - Google Patents

Federführungsvorrichtung in einem betätigungsmechanismus und damit versehenes elektrisches schutzgerät Download PDF

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Publication number
EP3182433B1
EP3182433B1 EP16188897.9A EP16188897A EP3182433B1 EP 3182433 B1 EP3182433 B1 EP 3182433B1 EP 16188897 A EP16188897 A EP 16188897A EP 3182433 B1 EP3182433 B1 EP 3182433B1
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EP
European Patent Office
Prior art keywords
rods
spring
guiding
oblong
shafts
Prior art date
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Active
Application number
EP16188897.9A
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English (en)
French (fr)
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EP3182433A1 (de
Inventor
Florent COLLAS
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.)
Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP3182433A1 publication Critical patent/EP3182433A1/de
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/22Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/22Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005Charging means
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/22Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3047Power arrangements internal to the switch for operating the driving mechanism using spring motor adapted for operation of a three-position switch, e.g. on-off-earth

Definitions

  • the present invention relates to a device for guiding a spring belonging to a control mechanism, this device comprising two rods able to slide relative to one another and being connected in a manner articulated respectively to two axes, one of which at least is mechanically connected to an operating shaft, and a compression spring supported by its two opposite ends respectively on the two aforementioned axes.
  • Such guiding devices are known used for guiding compression springs whose function is either to provide additional assistance for adding power and speed to the operation by a user of an output shaft of the mechanism. or actuating an operating device in place of a user by arming the spring by compression of the latter followed by a sudden decompression of the spring producing the actuation of the output device / drive.
  • such a subassembly can be mounted between two axes respectively belonging to two maneuvering cranks of two shafts, or between an operating crank pin and a fixed axis.
  • a spring guiding device consisting in using two guiding bases sliding relative to one another, these two bases being respectively articulately supported on two axes mechanically connected to two cranks.
  • the spring is mounted around the two aforementioned bases and is respectively supported by its two opposite ends respectively on these two bases.
  • the guiding device may exhibit during a high number of operations, a wear which leads to an arching of the guide assembly, thus preventing further maneuvering.
  • the present invention solves these problems and proposes a spring guiding device preventing the occurrence of bracing phenomenon between the sliding parts relative to each other, even in the case where this mechanism has a running stroke. important in a small footprint
  • Another object of the present invention is to propose such a guiding device, this device being insensitive to the environment.
  • this device comprises two tubular bases mounted around respectively the two opposite ends of the two sets of connecting rods, said bases being supported by one of their face respectively on the two axes and serving as a spring support surface. , by a face opposite to the previous one.
  • these sliding guide means of the two connecting rods comprise two cylindrical spacers each trapped in a slot of oblong shape and an orifice respectively provided in the two connecting rods, the two slots being respectively facing the two orifices.
  • these sliding guide means of the two connecting rods comprise an intermediate piece forming a shoe interposed between the two connecting rods, and a guide surface provided on the surface. internal sliding bases cooperating with a corresponding appropriate shape of the outer surface of the two connecting rods.
  • the rods have in cross section, a half-moon shape cooperating with a corresponding shape of the inner surface of the bases.
  • the present invention further relates to an electrical protection apparatus comprising a spring guide device having the aforementioned features taken alone or in combination.
  • this apparatus is a medium voltage switch-disconnector.
  • this device is intended to be placed between two shafts 2,3 respectively called shaft switch and earth disconnector shaft.
  • each shaft is equipped with a double crank 4,5, each of the two elements 4a, 4b; 5a, 5b of the double crank having a planar surface extending in a plane substantially perpendicular to the axis of rotation of the shafts 2,3.
  • cranks 4,5 On each of these cranks 4,5 is mounted an axis 6,7 extending in a direction substantially perpendicular to the plane of said corresponding crank, said pins 6,7 being intended to cooperate with a set of two connecting rods 8,9 of said link, said rods being mechanically connected by their two opposite ends to said two axes of the cranks 4,5.
  • a so-called compression spring 1 is mounted around the rods 8, 9 supported by one of its ends on one of the cranks 4 via a so-called first base 11, which is supported by the one of its faces 11a, on the corresponding axis 6, at a location between the two crank members 4a, 5a, and at its opposite end 1b, on the other 5 cranks, via a second base 12 bears on the axis 7 associated with this crank, between the two elements 5a, 5b of this crank.
  • the bases 11,12 comprise for this purpose two notches 13,14 intended to cooperate respectively with two recesses 15,16 provided on the corresponding axis 6,7.
  • This device also comprises, associated with each of the bases, two metallic support washers 17, 18 intended to be interposed each between a bearing face 11b, 12b of the base and the corresponding end of the spring 1.
  • each connecting rod comprises at one of its ends, a closed eyelet or oblong orifice 20, and at its opposite end, an eyelet or open oblong orifice 21, these two oblong orifices being intended to cooperate each with the axis 6.7 located on the side of said orifice, this axis being different for each orifice.
  • the bases 11,12 bear on the corresponding axes 6,7 between the two crank elements 4a, 4b; 5a, 5b and the rods cooperate with the axis portions located between the two aforementioned recesses 15,16 provided on the corresponding axis.
  • the guiding device comprises means for allowing the sliding guide of the two connecting rods relative to each other while maintaining a certain functional clearance between the two connecting rods.
  • these two rods are made of a metallic material and are held at a certain clearance relative to one another by two sets each comprising a rivet 22 and a spacer 23, said rivet 22 and said spacer 23 passing through an oblong opening 24 provided in one of the rods and an orifice 25 provided in the other of the rods so as to allow relative sliding between these two rods by displacement of the spacer inside the groove, the functional clearance between these two connecting rods being guaranteed by the presence of the spacers.
  • the two bases are made of plastic, this base having the function of putting the spring in abutment on the axis and the centering of the spring relative to the two connecting rods.
  • the two connecting rods 8, 9 are firstly fixed relative to one another by means of rivets 22 and spacers 23. Then, the two bases 11 , 12 and their washers associated 17,18 are threaded on the rods respectively by the two free ends of these rods after having previously mounted the compression spring 1 around the rods. Then, the pins 6,7 are mounted in the orifices provided for this purpose in the crank elements 4a, 4b; 5a, 5b and at the same time in the corresponding oblong orifices 20,21 of the connecting rods after having brought the two corresponding ends of the connecting rods between the two crank elements 4a, 4b, 5a, 5b. Then, the two bases 11, 12 are brought to bear on the pins 6, 7 during the extension of the compression spring 1.
  • these two rods are advantageously made of a plastic material and the two bases.
  • These two links have in section in a plane extending substantially perpendicular to the longitudinal axis of the connecting rods, a half-moon shape ( figure 10 ).
  • these two links form in section a circle whose outer surface 28 cooperates with an inner surface of tubular shape 27 of the corresponding base so that the base performs sliding guidance of these rods.
  • the bases perform sliding guide functions, centering the compression spring relative to the two connecting rods and the spring support surface.
  • the sliding guide rods is carried out in addition to the bases as previously explained, by means of a slide 26 forming a shoe advantageously made of plastic and interposed between the two connecting rods so as to perform this sliding guide function relative of these two connecting rods.
  • this guide device is carried out in the same manner as for the first embodiment, except that the mounting of the rivets and the spacer is replaced by the mounting of the slideway 26 between the two connecting rods. .
  • the guiding device is in the decompressed position of the spring 1 after a maneuver of the so-called first crank of the shaft Switch 2.
  • one of the shafts 6 associated with one of the cranks 4 is introduced into the closed eyelet 20 of one 8 connecting rods, while the other 7 of the two axes, associated with the other of the cranks 5, is introduced into the closed eyelet of the other rod 9.
  • the axes 6.7 are in abutment against the inner walls of the eyelets, said walls being located at the outer ends 20a, 20b of said eyelets.
  • the two axes are no longer inside the open eyelets 21.
  • the axis 6 associated with the crank 4 moves, which causes the displacement of the corresponding base 11, the latter sliding relative to the rods 8, 9, and the compression of the spring 1.
  • This axis 6 moves inside the closed eyelet 20 of the rod 9 and the open eyelet 21 of the connecting rod 8 until reaching the inner end 20a of the rod 9, 21b of the connecting rod 8 of these two eyelets. During this movement, the two rods move relative to each other closer.
  • the closed eyelet 20 of the connecting rod 8 and the open eyelet 21 of the connecting rod 9 move relative to the axis 7, which is not in movement until this axis 7 reaches the inner ends of the eyelets 20b of the connecting rod 8 and 21b of the connecting rod 9.
  • this spring drives the base 11 in a sliding movement relative to the two rods 8,9 in a direction away from one of the 'other. It follows a displacement of the axis 6 in a direction away from the two axes 6,7 from one another. This has the effect, the axis 6 coming into abutment against the face 20b of the connecting rod 9, to cause the relative displacement in sliding of the two connecting rods 8, 9 with respect to the other, thereby lengthening the assembly constituted by the two connecting rods, away from one another.
  • This guiding device has the advantage of eliminating the occurrence of bracing phenomena. This makes it possible to increase the number of maneuvers of a control mechanism, in particular a mechanism whose entire power chain consists exclusively of composite materials.
  • the use of plastic parts in a device according to the invention allows the spring guide to be integrated into the existing mechanisms in which the entire power chain is exclusively composed of composite material.
  • the second embodiment described having the largest number of parts made of composite material is the most advantageous.
  • a set of telescopic connecting rods comprising two rods guided in translation with respect to each other and each comprising, at one of its ends, a closed oblong hole allowing receive the axis said first prisoner, and at its other end, an open oblong hole allowing escape the second axis so as to increase the guide stroke and therefore the length of this set of rods.
  • the compression spring remains permanently prestressed.
  • the invention is advantageously applied to any device for guiding a compression spring mounted between two axes, whose center distance varies between a minimum distance of 90 mm and a maximum distance of 145 mm, the total stroke of which is large (corresponding to 40% compression), all mounted in a small location.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Springs (AREA)
  • Push-Button Switches (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Claims (7)

  1. Federführungsvorrichtung in einem Betätigungsmechanismus, wobei diese Vorrichtung zwei Verbindungsstangen, die in Bezug aufeinander gleiten können und jeweils durch ihre zwei freien Enden mit zwei Achsen gelenkverbunden sind, von denen mindestens eine mechanisch mit einer Schaltwelle verbunden ist, und eine Druckfeder in Anlage durch ihre beiden jeweils gegenüberliegenden Enden auf den beiden vorgenannten Achsen umfasst, wobei die Vorrichtung umfasst:
    Mittel zum gleitenden Führen der beiden Verbindungsstangen (8, 9) in Bezug aufeinander, wobei eine geschlossene längliche Öffnung (20) an einem der Enden jeder der Verbindungsstangen gebildet ist, wobei die Verbindungsstangen entgegengesetzt montiert sind, wobei die geschlossenen länglichen Öffnungen (20) geeignet sind, jeweils die beiden Achsen (6, 7) festzuhalten,
    dadurch gekennzeichnet, dass eine offene längliche Öffnung (21) am anderen Ende jeder der Verbindungsstangen gebildet ist, wobei die beiden offenen länglichen Öffnungen (21) geeignet sind, jeweils die beiden Achsen (6, 7) freizulassen, um den Führungsverlauf derart zu variieren, dass:
    - in einer Kompressionsphase der Feder (1), um den minimalen Führungsverlauf zu erhalten, die in den geschlossenen länglichen Öffnungen (20) festgehaltenen Achsen (6, 7), indem sie sich aneinander annähern, in der Endstellung in ihren jeweiligen länglichen Öffnungen anschlagen und die Verbindungsstangen mitführen, indem diese aneinander angenährt werden,
    - in einer Ausdehnungsphase der Feder, um den maximalen Verlauf zu erhalten, die in den geschlossenen länglichen Öffnungen (20) festgehaltenen Achsen (6, 7), indem sie sich voneinander entfernen, in der Endstellung in ihren jeweiligen länglichen Öffnungen anschlagen und die Verbindungsstangen (8, 9) mitführen, indem diese auseinandergeführt werden.
  2. Führungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass diese zwei Aufnahmestutzen (11, 12) umfasst, die jeweils um die beiden gegenüberliegenden Enden der beiden Verbindungsstangeneinheiten (8, 9) montiert sind, wobei die Stutzen (11, 12) durch eine (11a) ihrer Flächen jeweils an den zwei Achsen (6, 7) anliegen und als Anlagefläche (11b) für die Feder (1) durch eine Fläche gegenüber der vorhergehenden dienen.
  3. Führungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass diese Mittel zum gleitenden Führen der beiden Verbindungsstangen zwei zylindrische Stege (23) umfassen, welche jeweils in einem Loch (24) mit länglicher Form und einer Öffnung (25) festgehalten werden, die jeweils in den beiden Verbindungsstangen (8, 9) bereitgestellt sind, wobei die beiden Löcher jeweils neben den beiden Öffnungen liegen.
  4. Führungsvorrichtung nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass diese Mittel zum gleitenden Führen der beiden Verbindungsstangen ein einen Gleitschuh (26) bildendes Zwischenstück, das zwischen den beiden Verbindungsstangen (8, 9) angeordnet ist, und eine Führungsfläche (27), die auf der Innenfläche der Stutzen (11, 12) bereitgestellt ist und gleitend mit einer geeigneten entsprechenden Form der Außenfläche (28) der beiden Verbindungsstangen (8, 9) zusammenwirkt, umfassen.
  5. Führungsvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Verbindungsstangen im Querschnitt eine Halbmondform aufweisen, die mit einer entsprechenden Form der Innenfläche (28) der Stutzen zusammenwirkt.
  6. Elektrisches Schutzgerät, umfassend eine Federführungsvorrichtung nach einem der vorhergehenden Ansprüche.
  7. Elektrisches Schutzgerät nach Anspruch 6, dadurch gekennzeichnet, dass dieses Gerät ein Sicherheitstrennschalter für mittlere Spannungen ist.
EP16188897.9A 2015-12-18 2016-09-15 Federführungsvorrichtung in einem betätigungsmechanismus und damit versehenes elektrisches schutzgerät Active EP3182433B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1562718A FR3045930B1 (fr) 2015-12-18 2015-12-18 Dispositif de guidage d'un ressort dans un mecanisme de commande et appareil de protection electrique le comportant.

Publications (2)

Publication Number Publication Date
EP3182433A1 EP3182433A1 (de) 2017-06-21
EP3182433B1 true EP3182433B1 (de) 2018-02-28

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EP16188897.9A Active EP3182433B1 (de) 2015-12-18 2016-09-15 Federführungsvorrichtung in einem betätigungsmechanismus und damit versehenes elektrisches schutzgerät

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EP (1) EP3182433B1 (de)
CN (1) CN107017100B (de)
FR (1) FR3045930B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3928340A1 (de) * 2019-03-29 2021-12-29 Siemens Aktiengesellschaft Federsystem für ein antriebssystem mit kupplung, federsystem mit kupplung, antriebssystem mit kupplung und federsystem und schaltanlage mit einem solchen antriebssystem

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2660109B1 (fr) * 1990-03-23 1992-06-05 Merlin Gerin Mecanisme de commande d'un interrupteur a trois positions.
DE59206960D1 (de) * 1992-09-10 1996-09-26 Gec Alsthom T & D Ag Sprungantrieb für elektrische Schalter
FR2768552B1 (fr) * 1997-09-16 1999-10-22 Schneider Electric Sa Mecanisme de commande d'un interrupteur ou disjoncteur a trois positions
CN104299809B (zh) * 2014-06-27 2017-01-11 国家电网公司 弹簧组件及使用该弹簧组件的弹簧操动机构

Non-Patent Citations (1)

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

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Publication number Publication date
EP3182433A1 (de) 2017-06-21
CN107017100A (zh) 2017-08-04
FR3045930B1 (fr) 2017-12-22
FR3045930A1 (fr) 2017-06-23
CN107017100B (zh) 2020-06-12

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