EP1770739A1 - Differentialmodul mit einem entlang einer geneigten Bahn verschiebbarem Träger - Google Patents

Differentialmodul mit einem entlang einer geneigten Bahn verschiebbarem Träger Download PDF

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Publication number
EP1770739A1
EP1770739A1 EP05360037A EP05360037A EP1770739A1 EP 1770739 A1 EP1770739 A1 EP 1770739A1 EP 05360037 A EP05360037 A EP 05360037A EP 05360037 A EP05360037 A EP 05360037A EP 1770739 A1 EP1770739 A1 EP 1770739A1
Authority
EP
European Patent Office
Prior art keywords
drawer
circuit breaker
latch
breaker according
housing
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.)
Granted
Application number
EP05360037A
Other languages
English (en)
French (fr)
Other versions
EP1770739B1 (de
Inventor
Serge Thomas
Loïc Meyer
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.)
Hager Electro SAS
Original Assignee
Hager Electro SAS
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 Hager Electro SAS filed Critical Hager Electro SAS
Priority to DE602005006568T priority Critical patent/DE602005006568D1/de
Priority to AT05360037T priority patent/ATE394787T1/de
Priority to ES05360037T priority patent/ES2307135T3/es
Priority to EP05360037A priority patent/EP1770739B1/de
Publication of EP1770739A1 publication Critical patent/EP1770739A1/de
Application granted granted Critical
Publication of EP1770739B1 publication Critical patent/EP1770739B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
    • H01R9/2675—Electrical interconnections between two blocks, e.g. by means of busbars
    • 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
    • H01H71/08—Terminals; Connections
    • H01H71/082—Connections between juxtaposed circuit breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H01H83/226—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with differential transformer

Definitions

  • the present invention relates to a differential circuit breaker composed of a circuit breaker and a differential block contiguous to each other, for example modular products fixed on a rail in an electrical cabinet.
  • the differential block comprises in this case a sliding drawer with a lateral extension which allows mechanical and electrical coupling with the circuit breaker.
  • the conductors at the input of the differential unit are arranged in the said extension and their ends are positioned such that, when the drawer is closed, they can be inserted into the cages of the downstream connection devices of the circuit breaker in order to reach the terminals. with which they must come into contact to make the connection, then to be clamped on said terminals.
  • Such a coupling by sliding drawers is already known, and is for example the subject of the application PCT / WO99 / 63563 .
  • the object of this invention is in particular to make integral with the sliding drawer the electrical components of power and control of the differential block.
  • sliding drawer units are considered very interesting in a range of electrical devices for managing industrial and domestic circuits, because they make it possible to preserve the distinction between the differential function and the disjunction function while offering the possibility of coupling them. They avoid the manufacturer having to create a specific range of monobloc differential circuit breakers with a multitude of references, in addition to circuit breakers and differential blocks that are also unavoidable in a complete range. From a strictly economic point of view, the existence of differential blocks with drawers is therefore of considerable importance.
  • the second constraint results in fact from the centered position of the rigid conductors in the cages, which certainly facilitates their introduction but places them at the same time away from the connection terminal of the connection device of the circuit breaker. A catch of the game existing between the rigid conductor and the terminal must therefore be carried out. This requires considerable effort, because of the high rigidity of the conductors, efforts in particular implemented when tightening the screws in the connecting cages. The screws deform the conductors to press them in contact with the terminals, creating in particular a moment at the housings of both the sliding drawer and the circuit breaker, at their junction, and more precisely on the positioning stops of said conductors. The application of important constraints on the plastic walls can then lead to localized destruction or even to the breakage of parts of the housings.
  • the section of the rigid conductors for a 125 amps caliber involves sections having transverse dimensions of the order of 6 mm, leading to conductors which are obviously undeformable by human force alone.
  • the objective is to position the conductors as close as possible to the terminals, there is necessarily a dispersion which causes a variation in the distance which separates them after introduction.
  • the resulting misalignment leads in many situations to the need for significant deformation of the rigid ends of the conductors to bring them into contact with the terminals, thereby creating significant constraints on certain parts of the housings, in particular on the stops, at the time of tightening.
  • the present invention aims to remedy this problem, in particular by releasing the lower stops and, more generally, by franking the boxes of virtually any constraint at the time of tightening.
  • a plurality of drawer guide means of the same orientation are provided in the housing of the differential block, in order to make the path of the slide of the slide inclined relative to the general direction of movement, the ends of the drivers approaching. then progressively from the plane of contact with the terminals as the drawer moves in the closing direction, to finally bear against the terminals when the drawer is closed.
  • the inclination of the trajectory of the drawers is such that the connection areas of the conductors, that is to say their ends, come close to leaning on the terminal when the drawer is closed and in contact with a side wall of the circuit breaker box. Clamping in the cages by the screws therefore no longer deforms, resulting in a very significant reduction, or even a disappearance of the constraints applying to the respective casings of the circuit breaker and the drawer.
  • the sole of the housing of the differential block comprises lateral slides cooperating with ramps of the drawer, lined with sliding studs in inclined bottom slides in the drawer, said pads being located in line with a flange of the fixing rail.
  • the sole of the differential block housing may further comprise a rail having at least one inclined portion cooperating with a correspondingly shaped slideway formed in the drawer.
  • the rail actually comprises two inclined portions separated by a portion parallel to the sole, each inclined portion having a length corresponding to the travel of the drawer.
  • the side walls of the housing and the differential block slide may also include slides designed to guide the inclined slide of the drawer.
  • At least one of these side walls may comprise a slot provided for housing and guiding a projecting stud of the corresponding lateral wall of the drawer.
  • Two couples stud / recess inclined bottom located head-toe respectively on the sole and the bottom of the drawer with inversion reliefs, in the vicinity of said light, may further be provided to cooperate to improve the inclined guidance of the drawer in the housing.
  • the upper part of the drawer may, according to the invention, have at least one inclined surface provided for sliding in contact with an upper edge of the opening of the differential block housing in which is inserted the drawer.
  • an inclined lateral upper edge of the slide is also arranged with respect to said opening, so as to play the same guiding role.
  • the ends of the conductors which are positioned in the drawer by means of positioning stops are supported on them when the drawer is open and move away when they gradually take support on the terminals being closed, at the end of inclined trajectory .
  • these devices are generally attached to a rail using at least one mechanism disposed under the sole of the housing and including a latch.
  • the latches slide perpendicularly to the rail and are returned to the stable position of fixing by return means.
  • several latches must be unlocked one after the other, and they are therefore provided bistable, that is to say they can be maintained in a stable position, also in the unlocked position.
  • a latch puller has therefore been added to the differential block, in order to actuate the latches of the circuit-breaker, as well as those which are connected to the fixed housing of the differential blocks, covered in both cases by the spool valve. eyes of the user.
  • the drawer is provided with bistable latch pullers each designed to drive a latch sliding relative to the soleplate of the circuit breaker or that of the differential block, and to keep it open.
  • each latch puller slides in a housing in the drawer, having a stop on closing the latch puller, the upper edge of the opening of the latch-side housing cooperating with an inclined ramp of the latch puller for to tilt and allow a protrusion unciform to lodge in a hole of the latch, a shoulder of the latch puller protruding from the same side that the protrusion being provided to bear against a song of the sole of the drawer defining the l opposite opening of the housing, after an extraction of the latch corresponding substantially to the compression distance of the latch return spring.
  • latch puller whose profile must fulfill multiple functions.
  • the latch puller must not interfere mechanically with the latch of the circuit breaker.
  • a hook adequately disposed relative to the hole of the latch usually used to move it, is provided protruding from the latch puller.
  • the ramp thus ensures, when the latch lever is actuated in the opening direction, an automatic movement of the hook so that the latch of the circuit breaker is gripped. The extraction of the latch puller is then against the return spring equipping the latch.
  • bistable function of the latch although existing, is difficult to activate using a latch puller. It is therefore the latter who must implement it. This is the reason for the existence of the shoulder intended to bear against a singing of the sole of the drawer facing away from the circuit breaker.
  • the latch puller comprises an axial groove, one end of which consists of the inclined ramp, and the other end takes the form of a wall oriented perpendicular to the direction of sliding and intended to bear against the stop of the housing.
  • the unconnected protrusion is positioned so that it does not interact with the circuit breaker latch .
  • the end zone of the latch-puller located opposite the uncongled protrusion is provided with a heel protruding in a direction perpendicular to the sliding plane, towards the sole of the drawer, and protruding therefrom longer than the height of the shoulder of the latch puller when it bears against the edge of the sole.
  • the latch puller itself is also provided with biasing means exerting a force towards its stable closing position.
  • Said biasing means of the latch puller preferably also an action to move away from the sole of the drawer.
  • This component of course perpendicular to the direction to bring it back to its initial position is not sufficient to overcome the frictional forces that occur at the mechanical connection edge of the sole / shoulder of the latch puller in case of action of the latch return spring, and therefore does not question the bistable function.
  • the differential block is disassociated from the circuit breaker, however, it is no longer possible to put the latch puller in a stable opening position, with its shoulder bearing against said edge. It automatically returns to its starting position, a necessary condition for an association with a circuit breaker.
  • said return means consist of a spiral spring whose end branches are prestressed in the direction of the axis of the spiral central portion.
  • the latch puller is further provided with an axial portion protruding from the soleplate of the drawer and provided with a cavity for inserting the head of a handling tool.
  • Such a portion allows in particular the insertion of the end of a screwdriver, basic tool which are provided to all operators, facilitating the extraction of the differential block / circuit breaker assembly.
  • the rigidity of these conductors can create significant tensile forces and / or rotation at the connection, especially at the cages connection.
  • the protrusions with mounting notches on the rails are integral with the housing, the efforts in question tend to open the drawer, which can create unattractive misalignment, or even cause sufficient stresses to break the housing or the drawer lock system in the case.
  • the drawer guiding system and the locking system are no longer mechanically stressed and therefore no longer risk damage by pulling the cables.
  • circuit breaker / differential block assembly then forms a much more unitary and robust assembly, without obvious mechanical weakness.
  • Figure 1 shows the combination of a differential block (1) and a circuit breaker (2), in this case quadrupole.
  • the differential block (1) is provided with a sliding drawer (3) with a lateral extension (4) whose cowling is shown partially open.
  • This extension (4) has particular function the arrangement and positioning of the conductors (5) at the input of the differential block (1) relative to the connection devices (6) (cages) of the circuit breaker (2).
  • the conductors (5) are made of rigid materials, and strong section. They are not easily deformable.
  • the shape which is individually given to them, and in particular the orientation of their ends intended to cooperate with the connecting devices (6), is industrially using machines.
  • the positioning which is given at these ends more or less aims at centering in said cages. In such a case, these ends are, in most cases, positioned at a distance from the terminal to which it must be connected in the device when the drawer (3) is closed.
  • Screw tightening (7) in deforming the conductors (5) to bring them in contact with said terminals, exerts significant stresses which are reflected in particular at the level of the housings, in particular at the stops (10) which participate, in the lateral extension (4) of the drawer (3 ), positioning the ends of the conductor (5). In some cases, these constraints are such that there is a risk of breakage of the housings.
  • the trajectory of the slide (3), and consequently of the lateral extension (4) is provided so that it is inclined, the ends of the contacts (5) progressively going downwards, in contact with the terminals of the connection cages (6), as the slide (3) slides towards the housing respectively of the differential block (1) and the circuit breaker (2).
  • Figures 2a to 2c show the different phases of this sliding.
  • the lateral extension (4) is disposed in the open position, that is to say that the end of the conductor (6) is located outside the cage and at a distance from the terminal (9) connection to the circuit breaker circuit (2).
  • the position of the end of the conductor (5) is determined in particular by the existence of stops (10) located under the conductor (5) in the lateral extension (4) of the drawer (3).
  • the drawer (3) In the open position, the drawer (3) is slightly higher than the circuit breaker, as evidenced by the difference in level between its upper surface and the front of the circuit breaker (2) giving access to the screw (7).
  • the drawer (3) slides to the left and, during its closure, it descends gradually with respect to the circuit breaker.
  • the end of the conductor (5) comes into contact with the terminal (9), while remaining at this stage in contact with the stop (10) positioning.
  • the clamping screw (7) and its distribution plate (8) are always in the open position.
  • Figure 3 shows the differential block assembly (1) / circuit breaker (2) fixed on a rail (11) using mechanisms traditionally used in modular electrical appliances.
  • the soles of these devices comprise protuberances (12) with a notch cooperating with said rail (11).
  • they comprise latches (13) sliding on the soleplate, provided with a return spring in the closed position, and which make it possible to detach the product from its rail (11).
  • latches (13) sliding on the soleplate, provided with a return spring in the closed position, and which make it possible to detach the product from its rail (11).
  • there is more than one latch (13) on the sole of the device as is the case for example in Figure 3.
  • these latches are bistable, that is to say that in addition to their stable position at closing, they can present a position of stability to the opening.
  • the latches (13) are hidden from the user, and it has therefore been provided for the installation of a latch puller (14) to which the The user has access to slide the latches to remove the products from their rail (11).
  • FIG. return means in the form of a spiral spring (15)
  • the operation of such a latch puller (14) is best shown with reference to Figs. 5a to 5e. In these partial cuts, made at the lateral extension (4) of the drawer (3), that is to say in front of the circuit breaker (2), the latch puller of Figure 4 appears in section.
  • FIG. 5a it is shown in the retracted position, the wall (16) delimiting one of the ends of the axial groove (17) then bearing against an abutment (18) of the through-housing (19) formed in the occurrence in the lateral extension (4) of the drawer (3).
  • the unciform end (20) of the latch puller does not interact with the latch (13) of the circuit breaker (2).
  • the latch (13) is driven in translation, compressing its biasing means (not shown).
  • the latch puller (14) is always in the tilted position, due to the progression of the ridge (22) along the inclined ramp (21) of the latch (14), and also because of the existence of a shoulder (23) on the lower surface of the latch (14).
  • FIG. 5d shows the final phase of the extraction of the latch puller (14), the latch (13) being close to the maximum compression of its return spring, in the vicinity of a position of release of the rail (11) of hooking.
  • the shoulder (23) ensures, as shown in Figure 5e, the bistable function that is supported by the pull latch (14). This shoulder (23) bears against the outer edge of the sole (24) of the drawer (3), in this case at its lateral extension (4). In this stable position, the latch (13) is released from the rail.
  • the differential block (1) / circuit breaker (2) assembly can be disengaged from the rail when all of their latch lifters (14) have been put in this position. To disassemble, simply put then said set on a flat surface.
  • the heel (25) which appears in the rear part of the latch puller (14) is of sufficient length so that, when a gait pressure perpendicular to the plane of this surface is exerted, the shoulder (23) is released from the edge the sole (24), causing the latch puller (14) to return to the retracted position, as shown in FIG. 5a, under the combined effects of the latch return means (13) on the one hand, and those ( 15) of the latch puller (14) on the other hand.
  • the sole (32) of the housing of the differential block (1) is provided with slots (27) for sliding the protrusions (12) provided with notches for attachment to the rail (not shown), said protuberances (12) being provided integral with the drawer (3).
  • the constraints on the spool (3) at the time of tightening conductors therefore no longer affect the housing of the differential block (1), but are managed at the rail.
  • Figures 7 to 9 show in more detail the guide means of the slide (3) in the housing of the differential block (1).
  • the latter consists, as shown in Figure 7, of a base (30) and a cover (31) engageable to form the housing of the differential block (1), designed to accommodate and guide in translation the drawer (3).
  • the sole (32) of the base (30) comprises a first slide consisting of a rail (33) with two inclined portions separated by a flat portion parallel to said sole (32).
  • This rail (33) is intended to cooperate with a complex recess (34), visible in Figure 8, and which has the same negative shape as the rail (33).
  • the choice of a double inclined portion aims to occupy the minimum volume inside the differential block housing (1).
  • Two lateral slides (35, 36) protrude from the sole (32). They are associated with two studs (37, 38) which cooperate with corresponding reliefs / recesses of the drawer (3). It should be noted that the bottoms of the slides (35, 36) are at the same level as the outermost line of the protrusion (12), which makes it possible to increase the contact surface of the case when it is placed on a horizontal work plan. When the housing is equipped with its drawer (3), the existence of the slides (35, 36) prevents the tilting of the device even when the drawer (3) is open.
  • two protuberances (47, 48) protruding from the opposite side wall define, by their parallel facing surfaces, an inclined slide in which is slidable a beam (49) protruding from the drawer (see Figure 9) and inclined according to the angle of the latter's race.
  • All these guide means involve, besides the drawer (3), the base (30) of the differential block housing (1).
  • the cover (31) is also part of this guide, in particular by means of the edges (50, 51) of the orifice through which the slide (3) is inserted into said housing.
  • These edges (50, 51) for example visible in Figure 7, cooperate with parts of the sliding drawer (3) located in the upper part thereof.
  • a side wall of the drawer (3) whose upper edge (52) is inclined is provided to slide along the edge (50). This edge (52) appears in Figure 8, in the vicinity of the lateral extension (4) of the drawer (3).
  • This abutment at the opening is furthermore carried out by pressing a shim (62) (see FIG. 9) on an internal rib (63) (see FIG. 7) of the lid (31) adjoining a second barrel of upper screw (64) placed at the corner of the cover (31).

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Trip Switchboards (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP05360037A 2005-09-29 2005-09-29 Differentialmodul mit einem entlang einer geneigten Bahn verschiebbarem Träger Active EP1770739B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE602005006568T DE602005006568D1 (de) 2005-09-29 2005-09-29 Differentialmodul mit einem entlang einer geneigten Bahn verschiebbarem Träger
AT05360037T ATE394787T1 (de) 2005-09-29 2005-09-29 Differentialmodul mit einem entlang einer geneigten bahn verschiebbarem träger
ES05360037T ES2307135T3 (es) 2005-09-29 2005-09-29 Bloque diferencial con cajon deslizante segun una trayectoria inclinada.
EP05360037A EP1770739B1 (de) 2005-09-29 2005-09-29 Differentialmodul mit einem entlang einer geneigten Bahn verschiebbarem Träger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05360037A EP1770739B1 (de) 2005-09-29 2005-09-29 Differentialmodul mit einem entlang einer geneigten Bahn verschiebbarem Träger

Publications (2)

Publication Number Publication Date
EP1770739A1 true EP1770739A1 (de) 2007-04-04
EP1770739B1 EP1770739B1 (de) 2008-05-07

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ID=35501097

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05360037A Active EP1770739B1 (de) 2005-09-29 2005-09-29 Differentialmodul mit einem entlang einer geneigten Bahn verschiebbarem Träger

Country Status (4)

Country Link
EP (1) EP1770739B1 (de)
AT (1) ATE394787T1 (de)
DE (1) DE602005006568D1 (de)
ES (1) ES2307135T3 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0649158A1 (de) * 1993-10-18 1995-04-19 Schneider Electric Sa Differentialschutzblock mit Kabeldurchgang
EP0806784A2 (de) * 1996-05-07 1997-11-12 Felten & Guilleaume Austria Ag Schaltgerät mit bewegbaren Verbindungs-Leitungen
WO1999063563A1 (fr) 1998-05-29 1999-12-09 Hager Electro Dispositif de couplage de deux elements electriques modulaires accoles
US20020066654A1 (en) * 2000-12-01 2002-06-06 Autonetworks Technologies, Ltd. Breaker device
EP1278224A1 (de) * 2001-07-18 2003-01-22 Schneider Electric Industries SAS Elektrische Verbindungsvorrichtung für zwei nebeneinander auf einer Schiene montierte elecktrische Geräte
EP1378977A1 (de) * 2002-07-05 2004-01-07 Hager Electro S.A. Verriegelungssystem für eine Sammelschiene und ein Schaltgerät

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0649158A1 (de) * 1993-10-18 1995-04-19 Schneider Electric Sa Differentialschutzblock mit Kabeldurchgang
EP0806784A2 (de) * 1996-05-07 1997-11-12 Felten & Guilleaume Austria Ag Schaltgerät mit bewegbaren Verbindungs-Leitungen
WO1999063563A1 (fr) 1998-05-29 1999-12-09 Hager Electro Dispositif de couplage de deux elements electriques modulaires accoles
US20020066654A1 (en) * 2000-12-01 2002-06-06 Autonetworks Technologies, Ltd. Breaker device
EP1278224A1 (de) * 2001-07-18 2003-01-22 Schneider Electric Industries SAS Elektrische Verbindungsvorrichtung für zwei nebeneinander auf einer Schiene montierte elecktrische Geräte
EP1378977A1 (de) * 2002-07-05 2004-01-07 Hager Electro S.A. Verriegelungssystem für eine Sammelschiene und ein Schaltgerät

Also Published As

Publication number Publication date
DE602005006568D1 (de) 2008-06-19
ATE394787T1 (de) 2008-05-15
EP1770739B1 (de) 2008-05-07
ES2307135T3 (es) 2008-11-16

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