EP3993001B1 - Beweglicher kontaktträger für einen stromkreisunterbrecher und stromkreisunterbrecher mit einem solchen beweglichen kontaktträger - Google Patents

Beweglicher kontaktträger für einen stromkreisunterbrecher und stromkreisunterbrecher mit einem solchen beweglichen kontaktträger Download PDF

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Publication number
EP3993001B1
EP3993001B1 EP21205982.8A EP21205982A EP3993001B1 EP 3993001 B1 EP3993001 B1 EP 3993001B1 EP 21205982 A EP21205982 A EP 21205982A EP 3993001 B1 EP3993001 B1 EP 3993001B1
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EP
European Patent Office
Prior art keywords
movable
contact
guide shaft
movable assembly
assembly
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
EP21205982.8A
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English (en)
French (fr)
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EP3993001A1 (de
Inventor
Patrick Larcher
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
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Publication of EP3993001A1 publication Critical patent/EP3993001A1/de
Application granted granted Critical
Publication of EP3993001B1 publication Critical patent/EP3993001B1/de
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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • 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
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • 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
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/365—Bridging contacts
    • 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
    • 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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms

Definitions

  • the present invention relates to a movable contact carrier for a circuit breaker and a circuit breaker comprising such a movable contact carrier.
  • Such a circuit breaker comprises a casing which comprises fixed electrical contacts and movable electrical contacts, the latter being carried by a movable contact holder in the casing.
  • a moving contact carrier generally comprises a support made of insulating material and a conductive metal part carrying the moving electrical contacts, called the “moving assembly” or “moving contact”.
  • This moving assembly can generally slide on the support in order to maintain satisfactory contact pressure with the fixed electrical contacts.
  • the sliding of such a moving assembly has the disadvantage of degrading the support by friction, which leads to obstructing or blocking the movement of the moving assembly and reduces its lifespan.
  • the document FR-A-2 483 683 describes a contactor comprising a contact carrier movable between a work position and a rest position and comprising a rigid contact bridge, which carries two movable contacts, which is movable in sliding in a cage of the contact carrier and which is pressed against contacts fixed by a spring.
  • the contact carrier includes a pin around which the contact bridge pivots and which guides the contact bridge.
  • nothing makes it possible to favor the pivoting of the contact bridge around the pin, and the pivoting of the contact bridge is thus not sufficient to effectively press the movable contacts against the fixed contacts when a difference in wear appears between the two fixed contacts or between the two moving contacts.
  • the performance of such a moving contact carrier is therefore not reliable and durable, in particular when the wear of the contactor increases.
  • the invention more particularly intends to remedy by proposing a movable contact carrier whose durability is increased.
  • the invention it is possible to use a movable contact carrier in which the movement of the movable assembly is effectively guided, without degrading the support, and in which the rotation of the movable assembly relative to the support is facilitated, so as to make its operation more reliable and allow better contact pressure of the contact pads against fixed contact pads.
  • a circuit breaker 10 is shown in figures 1 to 3 .
  • This circuit breaker is intended to be integrated into an electrical circuit C represented by a centerline in these figures.
  • the circuit breaker 10 makes it possible to establish or interrupt the passage of a current in this electrical circuit C.
  • the circuit breaker 10 is, for example, integrated into a contactor.
  • the circuit breaker 10 comprises two half-shells 12 and 14 of insulating material forming together a casing 16, an upstream conductive strip 18, a downstream conductive strip 20 and a movable contact carrier 22 arranged partly in the casing 16 and partly outside the box 16.
  • C' the part of the electric circuit C formed by the conductive strips 18 and 20 inside the case 16.
  • a longitudinal axis X of the circuit breaker 10 is defined as being the axis of the largest dimension of the housing 16, a transverse axis Y as being the axis of the smallest dimension of the housing 16 and perpendicular to the axis X and a Z axis as being the third axis of an orthogonal frame comprising the X and Y axes.
  • Each half-shell 12 and 14 extends mainly in the plane formed by the X and Z axes.
  • the housing 16 includes an opening 17 formed on a face of the housing parallel to the plane formed by the X and Y axes.
  • the opening 17 is partially formed on the half-shell 12 and is partially formed on the half-shell 14.
  • the movable contact carrier 22 is movable between a closed position of the electric circuit, that is to say a position in which the circuit breaker 10 makes it possible to establish the passage of a current in the electric circuit C, and an open position of the electrical circuit, that is to say a position in which the circuit breaker makes it possible to interrupt the flow of a current in the electrical circuit.
  • the movement of the movable contact carrier 22 is a translation which takes place along the Z axis, which is parallel to the largest dimension of the movable contact carrier 22 and which therefore forms a longitudinal axis for this element 22.
  • the movement of the movable contact carrier 22 between the closed position and the open position is driven by an actuator, not shown, external to the circuit breaker 10 and known per se.
  • This actuator is, for example, an electromagnetic actuator comprising an electromagnet which, when supplied with electricity, switches the contact carrier to the closed position of the electrical circuit and a spring, not shown, which switches the contact carrier to the position opening of the electrical circuit when the electromagnet is not supplied with electricity.
  • This actuator is mechanically connected to an operating member 24 of the movable contact carrier 22, for example by snap-fastening.
  • the movable contact carrier 22 is therefore mainly placed inside the casing 16 but its end comprising the operating member 24 is placed outside the casing 16. Thus, the movable contact carrier 22 passes through the opening 17 .
  • FIG. 2 shows the movable contact holder 22 in the circuit breaker 10 in the position of closure of the electrical circuit C, namely of closure of its potion C'.
  • the movable contact carrier comprises a movable assembly 26 made of an electrically conductor, preferably copper.
  • this mobile assembly 26 is elongated and extends mainly along the X axis. It carries, at a first end, an upstream mobile electrical contact patch 28 and it carries, at a second end opposite the first end, a downstream movable electrical contact pad 30.
  • upstream conductive strip 18 carries an upstream fixed electrical contact pad 32 and the downstream conductive strip 20 carries a downstream fixed electrical contact pad 34.
  • the fixed electrical contact pads 32 and 34, as well as the movable electrical contact pads 28 and 30, are made of an electrically conductive material, preferably silver.
  • the moving assembly 26 electrically closes the electric circuit by connecting the upstream conductive strip 18 to the downstream conductive strip 20, which makes it possible to establish the passage of an electric current. This corresponds to the circuit breaker 10 configuration shown in figure 2 .
  • FIG. 3 shows the movable contact carrier 22 in the open position of the electrical circuit. In this position, the fixed and mobile contact pads are not in contact and the upstream conductive strip 18 is therefore not connected to the downstream conductive strip 20, which makes it possible to interrupt the passage of an electric current.
  • the movable contact pads 28 and 30 and the fixed contact pads 32 and 34 are separated by a distance d1, measured along the Z axis and visible to the picture 3 .
  • the movable contact carrier 22 moves by a distance d2, fixed and imposed by the actuator which drives the operating member 24.
  • the distance d2 is greater than the distance d1, preferably strictly greater than this distance.
  • the movable assembly 26 is movable in translation along the Z axis relative to the rest of the door. -mobile contact 22.
  • the mobile assembly 26 becomes immobile by relative to the housing 16 and becomes mobile by relative to the movable contact carrier 22.
  • the movable contact carrier 22 then continues its movement until it has traveled a total stroke equal to the distance d2.
  • the mobility of the movable assembly 26 relative to the rest of the movable contact carrier 22 therefore makes it possible to make reliable and facilitate the operation of the circuit breaker 10, the movement imposed by the actuator possibly being less precise than in the case of a moving element 26 fixed relative to the rest of the moving contact carrier 22.
  • the movable contact carrier 22 also comprises a spring 36 which exerts on the movable assembly 26 a restoring force Fr directed along the Z axis and which is transmitted by the latter to the movable electrical contact pads 28 and 30.
  • the movable electrical contact pads 28 and 30 each exert a contact pressure on the fixed electrical contact pads 32 and 34. This contact pressure promotes the passage of an electric current by allowing a better electrical connection between pads.
  • the restoring force Fr moves the moving assembly to a stable position.
  • the circuit breaker 10 is configured to carry out during its lifetime between 100,000 and 1 million electrical operations, that is to say switching between a state of circulation of a current in the circuit electrical and a state of interruption of the flow of a current in the electrical circuit, and between 1 million and 10 million mechanical operations, that is to say of switching between the closed position of the electrical circuit and the position opening of the electric circuit, independently of the presence of an electric current.
  • the fixed and mobile electrical contact pads are configured to have a sufficient thickness so that these degradations do not prevent their operation, thus forming a wear guard.
  • the two fixed electrical contact pads on the one hand and the two mobile electrical contact pads on the other hand have surfaces facing each other which are contained in two planes parallel to the plane formed by the X and Y axes.
  • the movable contact carrier 22 comprises a support 38 which extends mainly along the Z axis, which corresponds to the fact that the Z axis is a longitudinal axis for the movable contact carrier 22.
  • This support 38 is in one piece and comprises a main body 40 which carries the maneuvering member 24, two legs 42 which extend facing each other from the main body 40 along the Z axis, opposite the maneuver 24, and a base 44 which connects the two legs 42 at their opposite ends to the main body 40.
  • Each leg 42 extends in width along the axis X over the entire width of the support 38.
  • the support 38 defines a housing 46 between the main body 40, the legs 42 and the base 44.
  • the housing 46 crosses the support 38 right through along the axis X.
  • internal face denoted 48
  • external face the face of the main body 40 opposite the internal face and which, among other things, bears the operating member 24.
  • the internal face 48 and the external face 50 are parallel to the plane formed by the axes X and Y.
  • side face denoted 52, denotes the face of each leg 42 which defines the housing 46.
  • the side faces of the two legs are parallel to the plane formed by the axes X and Z.
  • L46 the width of the housing 46, measured along the Y axis and which corresponds to the distance between the two side faces 52.
  • the housing 46 is therefore delimited by the faces 48 and 52 as well as by the base 44.
  • Each leg 42 comprises an oblong hole 54 extending along the Z axis and crossing the leg right through along the Y axis.
  • the oblong hole 54 of each leg opens into the housing 46.
  • the two oblong holes 54 face each other, are aligned along the Y axis and preferably have the same geometry.
  • L54 the width of an oblong hole measured parallel to the X axis.
  • the base 44 includes a retaining pin 56 which extends along the Z axis in the housing 46.
  • the movable assembly 26 of the movable contact carrier 22 comprises a contact wall 58 which extends mainly along the X axis in the plane formed by the X and Y axes and two side walls 60, which extend opposite the each other perpendicular to the contact wall 58.
  • each side wall 60 is formed a notch 62 and is designated by "sliding surface", denoted 64, the outer face of each side wall 60, that is- ie the face of this side wall facing away from the other side wall.
  • L64 denotes the width of the moving assembly 26, measured along the Y axis and which corresponds to the distance between the two sliding surfaces.
  • V64 denotes the open volume defined by the contact wall 58 and the side walls 60 of the mobile assembly 26.
  • the upstream mobile electrical contact pad 28 and the downstream mobile electrical contact pad 30 are each carried at one end of the contact wall 58 of the mobile assembly 26, on the face of the contact wall opposite the side walls 60. Moving contact pads 28 and 30 are part of moving assembly 26.
  • the movable contact holder 22 also comprises a guide shaft 66.
  • the guide shaft 66 is a cylinder extending, in the mounted configuration of the circuit breaker, along a main axis Y66 parallel to the axis Y, of small diameter by relative to its length. It is mounted on the moving assembly 26 by passing through the notches 62 of the side walls 60. The size of the notches 62 is configured so that the guide shaft 66 is tightly mounted in the notches.
  • the notches 62 are replaced by cylindrical holes made in the side walls 60.
  • the diameter of these holes is configured so that the guide shaft 66 is tightly mounted in these holes.
  • the mobile assembly 26 is mounted in the housing 46 so that the guide shaft 66 passes through the two oblong holes 54 of the side faces 52 and so that the contact wall 58 of the mobile assembly is directed towards the internal face 48 of the main body 40.
  • the diameter D66 of the guide shaft 66 is substantially equal to the width L54 of the oblong holes 54, except for operating clearance.
  • the guide shaft is guided precisely by them, in translation along the Z axis.
  • the width L64 of the movable assembly 26 is substantially equal to the width L46 of the housing, to within operating clearance, so that the sliding surfaces 64 of the movable assembly are in contact with the side faces 52 of the housing 46. Nevertheless, the fact that the movable assembly is of elongated and therefore of low height allows a slight rotation of the mobile assembly 26 around an axis parallel to the axis X passing through the center of the guide shaft 66.
  • the amplitude of the rotation around the axis Y66 of the moving assembly is between +10 and -10 degrees, preferably between +5 and -5 degrees, around a position in which the contact wall 58 is parallel to the plane formed by the X and Y axes.
  • the amplitude of the rotation of the moving assembly around the axis parallel to the axis X passing through the center of the guide shaft 66 is between +5 and -5 degrees.
  • the movable contact carrier 22 also comprises a yoke 68.
  • the yoke 68 comprises a support wall 70 parallel to the plane formed by the axes X and Y and two side walls 72 which extend from the support wall 70 perpendicular to this wall, i.e. along the Z axis.
  • Each side wall 72 has a triangular shape, so as to form a point 74.
  • Each side wall 72 further comprises a through opening 76 configured to allow passage of the guide shaft through the yoke 68.
  • the openings 76 extend in the side walls 72 up to the support wall 70, so that the guide shaft, in the position mounted on the yoke 68, is in contact or in the immediate vicinity with a first face of the bearing wall 70, this first face being visible to the figure 5 .
  • the yoke 68 also includes two hooks 78, which extend from a second face of the support wall 70 opposite the first face, so as to move away from the support wall 70.
  • the yoke 68 is located in the volume V64 of the movable assembly 26, so that the points 74 are directed towards the contact wall 58 of the movable assembly and that the hooks 78 are directed towards the base 44.
  • the guide shaft 66 passes through the yoke 68 while being mounted in the notches 62 of the moving assembly.
  • the triangular shape of the side walls 72 makes it possible to avoid any contact between the side walls 72 and the mobile assembly 26 when the latter is in rotation around the axis Y66 and the side walls 72 define the maximum amplitude of rotation of the moving assembly because in maximum rotation, the wall 58 of the moving assembly comes into contact with one of the side walls 72 In particular, it is possible for the tip 74 of each side wall 72 to remain at a distance from the moving assembly 26 during rotation of the moving assembly around the axis Y66.
  • the spring 36 is a helical compression spring.
  • the spring 36 is mounted between the mobile assembly 26 and the base 44, so that a first of its ends surrounds the retaining pin 56, which makes it possible to position and maintain this end on the base 44, and that a second of its ends is located between the hooks 78 of the yoke 68.
  • the second end of the spring 36 exerts the restoring force Fr on the bearing wall 70 of the yoke 68 which then transmits this force to the guide shaft 66 then to the mobile assembly 26.
  • the moving assembly 26 moves along the Z axis until the contact wall 58 of the moving assembly comes into contact with the internal face 48 of the main body 40 This position is the stable position of the moving assembly 26.
  • the movable contact carrier 22 also includes a balancing blade 80, which is mounted between the movable assembly 26 and the yoke 68, in the volume V64.
  • the balancing blade 80 comprises a central part 82 from which extend two legs 84.
  • Each leg 84 extends obliquely with respect to the axis X and comprises two parts 842 and 844.
  • a first part 842 extends of the central part 82 in the direction of the yoke 68, then a second part 844 moves away from the end of the first part in the direction of the mobile assembly 26.
  • the two legs 84 form two bumps and the central part 82 forms a hollow, as seen in figure 2 , 3 And 5 where the hollow of the central part 82 is directed downwards.
  • each tab 844 is connected to a support 86, which is flat and parallel to the plane formed by the X and Y axes.
  • the two supports 86 form the two ends of the balancing blade 80 and are, in the mounted configuration of the movable contact carrier 22, in contact with the contact wall 58 of the movable assembly 26.
  • the lugs 84 are configured so that in the mounted configuration, the central part 82 is not in contact with the contact wall 58 of the moving assembly, as visible in figure 2 And 3 .
  • the central part 82 and part of the lugs 84 of the balancing blade 80 are masked by the yoke 68 and by the mobile assembly 26. They are configured not to be in contact with clevis 68.
  • the central part 82 of the balancing blade 80 is in contact with the guide shaft, so that the guide shaft is positioned in the hollow formed by this part 82.
  • the balancing blade is inserted between the mobile assembly 26 and the guide shaft 66, as visible on the figure 2 And 3 .
  • the balancing blade 80 is rotatable around the axis Y66 of the guide shaft 66 and fixed with respect to the mobile assembly 26.
  • the balancing blade 80 allows the rotation of the mobile assembly 26 around axis Y66 of guide shaft 66.
  • the balancing blade 80 makes it possible to balance the contact pressures of the movable electrical contact pads 28 and 30 on the fixed electrical contact pads 32 and 34.
  • the thickness of the electrical contact pads varies, because of the degradations that these pads undergo.
  • this degradation is not uniform over all of the pads, which leads to an imbalance in the contact pressure between the upstream electrical contact pads and the downstream electrical contact pads if, for example, the degradation of the downstream pellets is greater than the degradation of the upstream pellets.
  • the difference in contact pressure between the upstream pads and the front pads can also come from the deposition of drops of molten material caused by electric arcs, which solidify on the pads and thus cause their height to vary.
  • this imbalance in the contact pressure will occur if the two fixed pads and/or if the two mobile pads are no longer contained in the same plane parallel to the plane formed by the X and Y axes.
  • the movable assembly 26 When the contact pressures exerted on the two ends of the movable assembly 26 by the upstream pads and the downstream pads are not uniform, the movable assembly 26 is rotated around the axis Y66 of the guide shaft thanks to the balancing blade until these forces are balanced and therefore until the contact pressure between the upstream contact pads on the one hand and the contact pressure between the downstream contact pads are balanced .
  • the balancing blade 80 therefore functions like a spreader bar, by balancing the contact pressures of its two end supports 86 on the contact wall 58 of the moving assembly.
  • the assembly consisting of the mobile assembly 26, the guide shaft 66, the yoke 68 and the balancing blade 80, which allows rotation of the mobile assembly about an axis parallel to the Y axis, the contact pressures of the electrical contact pads are always balanced, even when these pads are degraded.
  • the yoke 68 also makes it possible to assemble the movable assembly 26 and the balancing blade 80 with the guide shaft 66 and to allow the spring 36 to press against a flat and fixed surface.
  • Clevis 68 is made of a metallic material, preferably standard copper clad steel.
  • the balancing blade 80 is made of a metallic material, preferably spring steel, that is to say steel having mechanical characteristics adapted to the design of a spring.
  • Support 38 is made of a thermosetting polymer material, preferably unsaturated polyester.
  • the guide shaft 66 is made of a metallic material, preferably a hardened alloy steel.
  • the friction of the guide shaft in the oblong holes 54 is low.
  • the translation of the moving assembly in the housing 46 of the support 38 is therefore guided by the guide shaft in a reliable and efficient manner.
  • the half-shell 12 of the housing 16 includes a housing 88.
  • the half-shell 14 of the housing includes an identical housing, not visible in the figures.
  • the housing 88 is made on an inner face of the main body 90 of each half-shell, that is to say on a face facing the movable contact carrier 22 in the mounted configuration of the circuit breaker 10.
  • This housing is a hole blind oblong which extends along the Z axis and of which we note 89 the bottom.
  • the bottom 89 of the housing 88 provided on the half-shell 14 is visible at the figure 1 .
  • the half-shell 12 also comprises a half-chamber 92, formed by two walls 94 and the main body 90.
  • the half-shell 14 comprises an identical half-chamber, not shown but symmetrical with the half-chamber 92 with respect to the plane cutting II. When the half-shells 12 and 14 are assembled, the two half-chambers 92 together form a chamber 96.
  • the main body 40 passes through the opening 17 so that the operating member 24 is disposed outside the housing, the legs 42 and the base 44 are arranged in the chamber 96 of the housing 16 and the two ends 662 and 664 of the guide shaft 66 are located in the two oblong holes 88 of the half-shells 12 and 14.
  • the guide shaft 66 is configured so that its length L66 is equal, to the nearest operating clearance, to the distance separating the bottoms 89 of the two oblong holes 88 of the half-shells, measured along the Y axis.
  • the opening 17 comprises pads 98 which make it possible to reduce the friction of the main body during the movements of the movable contact carrier 22 along the Z axis.
  • the support 38 of the movable contact holder 22 is configured not to rub against the parts of the half-shells 12 and 14 which constitute the chamber 96.
  • the translation of the movable contact carrier 22 is therefore mainly guided by the movement of the guide shaft 66 in the housings 88 and of the main body 40 in the opening 17.
  • the guide shaft 66 therefore makes it possible both to guide the movement of the movable contact carrier 22 relative to the housing 16 and the movement of the movable assembly 26 relative to the movable contact carrier 22.
  • This double guiding function is advantageous, because it makes it possible to easily control the relative positioning of the constituent elements of the circuit breaker 10, and more particularly the positioning of the movable contact carrier 22 with respect to the housing 16 and the positioning of the movable assembly. 26 relative on the one hand to the housing 16 and on the other hand to the movable contact holder 22, because these positions depend mainly on the positioning of the guide shaft 66.
  • this double guiding function makes it possible to simplify the functional dimensioning of the constituent elements of the circuit breaker 10 by reducing the chains of dimensions, which allows better assembly precision of the circuit breaker.
  • the guiding zones of the movable assembly 26 vis-à-vis the support 38 that is to say the oblong holes 54, are formed outside housing 46 and are therefore protected from pollution.
  • housing 16 is made of a thermosetting polymeric material, preferably unsaturated polyester, and pads 98 are made of a material low friction thermoplastic. The friction of the guide shaft 66 against the housings 88 and of the main body 40 against the pads 98 is therefore low.
  • the housings 88 are masked by the support 38, that is to say that the support 38 covers the opening of the housings 88.
  • the housings 88 are protected from the projections of drops of molten material produced by the degradation of the mobile and fixed electrical contact pads, or dust which could penetrate into the casing 16. This protection is advantageous because it makes it possible to avoid the accumulation of polluting material in the housings, which could harm the movement of the shaft guide 66 in the housings 88.
  • the reliability of the operation of the circuit breaker 10 is therefore maintained throughout its life.
  • the spring is positioned in the housing 46 before the assembly step of the guide shaft 66.
  • the guide shaft 66 is mounted tight in the notches 62 prevents it from being dismantled by sliding along the axis Y66.
  • the guide shaft is therefore received in the oblong holes 54 and makes it possible to maintain all the parts of the movable contact carrier 22 mounted, like a pin.
  • the assembly of the movable contact carrier 22 is simple and does not require specific tools.
  • the fact that the width L64 of the moving assembly 26 is substantially equal to the width L46 of the housing 46 also prevents any movement, along the Y axis, of the moving assembly in the housing.
  • the moving assembly 26 is therefore kept assembled in the housing 46 of the support 38 on the one hand by the two side faces 52 of the housing, which block any translation along the Y axis of the moving assembly, and on the other hand by the guide shaft, which prevents dismantling of the moving assembly.
  • the assembly of the movable contact carrier 22 in the housing 16 is therefore simple and quick.
  • the circuit breaker 10 includes other elements in the housing 16, necessary for its correct operation. These elements can for example be insulators, electric arc dividers or deflectors. These elements have not been represented or described for the purpose of simplifying this presentation.
  • the most expensive elements of the circuit breaker 10 are the electrical contact pads 28, 30, 32 and 34. Their cost comes essentially from the material used, which is preferably silver.
  • the other elements of the circuit breaker 10 are inexpensive, in particular all of the thermosetting polymer parts, such as the housing 16 and the support 38, which can be manufactured by molding.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Claims (9)

  1. Beweglicher Kontaktträger (22) für Stromkreisunterbrecher (10), umfassend:
    - einen Träger (38), in dem eine Aufnahme (46) ausgebildet ist;
    - eine bewegliches Teil (26) aus elektrisch leitendem Material, das entlang einer Längsachse (Z) des Trägers verschiebbar in der Aufnahme des Trägers montiert ist;
    - ein stromaufwärtiges elektrisches Kontaktpad (28) und ein stromabwärtiges elektrisches Kontaktpad (30), die von dem beweglichen Teil getragen werden;
    - eine Feder (36), die eine Rückstellkraft (Fr) auf das bewegliche Teil ausübt,
    - wobei der Träger (38) ferner zwei Langlöcher (54) umfasst, die in die Aufnahme (46) münden und sich entlang ihrer Längsachse (Z) erstrecken;
    - wobei der bewegliche Kontaktträger (22) ferner eine Führungswelle (66) umfasst, die in Bezug auf das bewegliche Teil (26) translationsfest ist, die sich entlang einer Achse (Y66) parallel zu einer Querachse (Y) des Trägers erstreckt und die in die Langlöcher des Trägers eingreift;
    - die Führungswelle, die in die Langlöcher eingreift, die Translation des beweglichen Teils in dem Gehäuse führt;
    - das bewegliche Teil (26) in Bezug auf den Träger (38) um eine Hauptachse (Y66) der Führungswelle (66) drehbar ist;
    dadurch gekennzeichnet, dass:
    - der bewegliche Kontaktträger (22) einen Gabelkopf (68) umfasst, der in einem Innenvolumen (V64) des beweglichen Teils (26) angeordnet ist, wobei die Führungswelle (66) durch Öffnungen (76) des Gabelkopfs angeordnet ist und der Gabelkopf mit Einrichtungen (78) zum Halten eines Endes der Feder (36) ausgestattet ist;
    - der bewegliche Kontaktträger eine Ausgleichslamelle (80) umfasst, die zwischen dem Gabelkopf und dem beweglichen Teil angeordnet ist und zwischen der Führungswelle und dem beweglichen Teil eingefügt ist, wobei die Ausgleichslamelle um die Hauptachse (Y66) und die Führungswelle drehbar ist; und
    - die Drehung der Ausgleichslamelle um die Hauptachse der Führungswelle die Drehung des beweglichen Teils um die Hauptachse der Führungswelle ermöglicht.
  2. Beweglicher Kontaktträger (22) nach Anspruch 1, wobei das bewegliche Teil (26) durch die Führungswelle (66) und durch zwei Gleitflächen (64) des beweglichen Teils, die mit zwei Seitenflächen (52) der Aufnahme (46) des Trägers in Kontakt sind, an der Träger (38) zusammengebaut gehalten wird.
  3. Mobiler Kontaktträger (22) nach einem der vorherigen Ansprüche, wobei:
    - das bewegliche Teil (26) zwei Seitenwände (60) und eine Kontaktwand (58) umfasst, die das Innenvolumen (V64) des beweglichen Teils definieren, wobei jede Seitenwand eine Kerbe (62) umfasst, in der die Führungswelle (66) montiert ist;
    - das Ausgleichslamelle (80) einerseits an seinen Enden (86) an der Kontaktwand (58) des beweglichen Teils und andererseits in seiner Mitte (82) an der Führungswelle anliegt; und
    - der Druck, mit dem die zwei Enden der Ausgleichslamelle an der Kontaktwand der bewegliche Teil anliegen, ausgeglichen ist.
  4. Beweglicher Kontaktträger (22) nach einem der vorherigen Ansprüche, wobei die Führungswelle (66) aus einem duroplastischen Polymermaterial gefertigt ist und dass der Träger vorzugsweise aus einem duroplastischen Polymermaterial gefertigt ist.
  5. Stromkreisunterbrecher (10), der dazu bestimmt ist, in einen Stromkreis (C) eingesetzt zu werden, und umfassend:
    - ein Gehäuse (16);
    - ein stromaufwärtiges festes elektrisches Kontaktpad (32) und ein stromabwärtiges festes elektrisches Kontaktpad (34), die in dem Gehäuse befestigt sind; und
    - einen beweglichen Kontaktträger (22), umfassend eine Feder (36), ein bewegliches Teil (26), ein stromaufwärtiges elektrisches Kontaktpad (28), das von der beweglichen Teil getragen wird, und ein stromabwärtiges elektrisches Kontaktpad (30), das von dem beweglichen Teil getragen wird,
    wobei der bewegliche Kontaktträger zwischen einer Position zum Schließen des Stromkreises (C) in dem Gehäuse (16) beweglich ist, in der das stromaufwärtige Kontaktpad (28) des beweglichen Teils (26) an dem stromaufwärtigen festen Kontaktpad (32) anliegt, in der das stromabwärtige Kontaktpad (30) des beweglichen Teils an dem stromabwärtigen festen Kontaktpad (34) anliegt und in der eine Feder (36) einen Kontaktdruck zwischen den elektrischen Kontaktpads (28, 30) des beweglichen Kontaktträgers (22) und den elektrischen Kontakten (18, 20) des Gehäuses (16) und einer Öffnungsposition des elektrischen Stromkreises, in der die elektrischen Kontaktpads des beweglichen Teils von den festen elektrischen Kontaktpads entfernt sind, ausübt,
    dadurch gekennzeichnet, dass der mobile Kontakthalter gemäß einem der vorherigen Ansprüche ist.
  6. Stromkreisunterbrecher (10) nach Anspruch 5, wobei das Gehäuse (16) zwei längliche Aufnahmen (88) zum Führen der Führungswelle (66) umfasst.
  7. Stromkreisunterbrecher (10) nach Anspruch 6, wobei die Halterung (38) des beweglichen Kontaktträgers (22) die Aufnahmen (88) des Gehäuses (16) verdeckt.
  8. Stromkreisunterbrecher (10) nach einem der Ansprüche 5 bis 7, wobei Führungsbereiche (54) des beweglichen Teils (26) gegenüber dem Träger (38) außerhalb der Aufnahme (46) des beweglichen Kontaktträgers (22) angeordnet sind und/oder wobei Führungsbereiche (88) des beweglichen Kontaktträgers (22) gegenüber dem Gehäuse (16) außerhalb des beweglichen Kontaktträgers (22) angeordnet sind.
  9. Stromkreisunterbrecher (10) nach einem der Ansprüche 5 bis 8, wobei das bewegliche Teil (26) um die Hauptachse (Y66) der Führungswelle drehbar ist und wobei in der Schließstellung des Stromkreises (C) der Kontaktdruck des stromaufwärtigen elektrischen Kontaktpads (28) des beweglichen Kontaktträgers (22) auf dem stromaufwärtigen festen elektrischen Kontaktpad (18), einerseits und der Kontaktdruck des stromabwärtigen elektrischen Kontaktpads (30) auf dem stromabwärtigen festen elektrischen Kontaktpad (20) andererseits durch die Drehung des beweglichen Teils (26) um die Führungswelle (66) ausgeglichen werden.
EP21205982.8A 2020-11-03 2021-11-02 Beweglicher kontaktträger für einen stromkreisunterbrecher und stromkreisunterbrecher mit einem solchen beweglichen kontaktträger Active EP3993001B1 (de)

Applications Claiming Priority (1)

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FR2011268A FR3115924B1 (fr) 2020-11-03 2020-11-03 Porte-contact mobile pour coupe-circuit et coupe-circuit comprenant un tel porte-contact mobile

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DE3018651A1 (de) 1980-05-16 1981-11-26 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Einrichtung zum gegenseitigen fixieren zweier bauteile
FR2483683A1 (fr) 1980-05-30 1981-12-04 Telemecanique Electrique Contacteur ayant des proprietes de disjoncteur
FR2687251B1 (fr) * 1992-02-11 1994-04-29 Telemecanique Structure de coupure pour disjoncteur.
US6822173B1 (en) * 2000-06-07 2004-11-23 Moeller Gmbh Contact element
US6880226B2 (en) * 2001-06-29 2005-04-19 General Electric Company Method for limiting movement in electrical contactors
DE10356271B4 (de) * 2003-11-28 2008-02-14 Siemens Ag Schaltgerät
DE102007017516B3 (de) * 2007-04-13 2008-04-30 Siemens Ag Herstellungsverfahren für ein elektromagnetisches Schaltgerät mit Trennwänden zwischen Haupt- und Hilfskontakten sowie entsprechend dem Herstellungsverfahren hergestelltes elektromagnetisches Schaltgerät
FR2957712B1 (fr) * 2010-03-19 2012-04-13 Schneider Electric Ind Sas Dispositif de contact mobile pour contacteur de forte puissance resistive
EP2573784B1 (de) * 2011-09-21 2016-08-03 Siemens Aktiengesellschaft Leistungsschalter mit optimierter Gehäusestabilisierung durch klemmend wirkende Festschaltstücke
FR3003392B1 (fr) * 2013-03-15 2016-07-22 Schneider Electric Ind Sas Bloc unitaire de commutation et dispositif de commutation comportant au moins un tel bloc
WO2015169390A1 (de) * 2014-05-09 2015-11-12 Siemens Aktiengesellschaft Kontaktschiebereinheit für eine schalteinheit
JP6447464B2 (ja) * 2015-11-06 2019-01-09 オムロン株式会社 スイッチ
FR3045928B1 (fr) * 2015-12-17 2017-12-22 Schneider Electric Ind Sas Appareil de coupure electrique
JP2019067508A (ja) * 2017-09-28 2019-04-25 パナソニックＩｐマネジメント株式会社 接点装置および当該接点装置を搭載した電磁継電器

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FR3115924B1 (fr) 2023-05-12
FR3115924A1 (fr) 2022-05-06
CN114446677A (zh) 2022-05-06
US11710607B2 (en) 2023-07-25
EP3993001A1 (de) 2022-05-04

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