EP0142404A1 - Schalter mit schwenkbarem Kontaktträger - Google Patents

Schalter mit schwenkbarem Kontaktträger Download PDF

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Publication number
EP0142404A1
EP0142404A1 EP84401956A EP84401956A EP0142404A1 EP 0142404 A1 EP0142404 A1 EP 0142404A1 EP 84401956 A EP84401956 A EP 84401956A EP 84401956 A EP84401956 A EP 84401956A EP 0142404 A1 EP0142404 A1 EP 0142404A1
Authority
EP
European Patent Office
Prior art keywords
contact
movable contact
active area
point
reaction
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
EP84401956A
Other languages
English (en)
French (fr)
Other versions
EP0142404B1 (de
Inventor
Jean-Marie Roiatti
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 AT84401956T priority Critical patent/ATE44191T1/de
Publication of EP0142404A1 publication Critical patent/EP0142404A1/de
Application granted granted Critical
Publication of EP0142404B1 publication Critical patent/EP0142404B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts

Definitions

  • the invention relates to switches provided with at least one movable contact which is mounted on a contact carrier capable of switching between a working position, where it puts an active area of the movable contact in contact with an active area of a fixed contact under a pressure determined by the action of a compression spring, and a rest position, where it maintains these two active zones separated from one another.
  • the invention relates more particularly, but not exclusively, to switches with automatic cut-off and more particularly still to differential switches.
  • active area of the fixed or mobile contact is meant a projecting area, formed either directly by deformation on the contact considered, or more generally on an element such as a rivet, attached to this contact.
  • the object of the invention is to simplify the construction of these switches, in particular by making the above-mentioned spring perform an additional function.
  • the switch according to the invention is essentially characterized in that the compression spring acts on the movable contact at a point thereof (hereinafter called “action point”) which is located on the same face as the active area of this movable contact, so as to push the latter against the contact carrier at two points (hereinafter called “reaction points”) which are spaced from one another and situated on the other face of the movable contact, one of these reaction points being more distant and the other less distant from the active area of the mobile contact than the point of action.
  • action point a point thereof
  • reaction points two points
  • point either of action, or of reaction, one wants to emphasize the local character of the area by which the spring acts on the movable contact as well as of the area by which the contact carrier reacts on without, of course, limiting itself to the purely geometric meaning of the term "point”. This is how, under this term, it is intended to include, for example, a generator perpendicular to the tilting axis of the contact carrier or a surface generated by such a generator, along a short guiding curve.
  • the above-mentioned spring not only exerts in a known manner the pressure for applying the active areas of the contacts against one another in position but still tends to separate these active areas from one another during the transition from the working position to the rest position and to keep them apart from one another in the rest position.
  • the switch shown in Figures 1 and 2 comprises an insulating housing of which only one wall element has been shown 1. Inside this housing, a movable contact 2, in the form of a blade, is mounted on a door -contact 3, in insulating material, capable of tilting, around an axis X, between a working position ( Figure 1) and a rest position ( Figure 2).
  • the contact carrier 3 puts an active area 4 of the movable contact 2 in contact with an active area 5 of a fixed contact 6, under a pressure determined by the action of a spring helical compression 7.
  • the contact carrier 3 keeps the two active areas 4, 5 apart from one another.
  • the active zones 4 and 5 are constituted by surfaces belonging respectively to a rivet 8, attached to the movable contact 2, and to a rivet 9, attached to the fixed contact 6.
  • the fixed contact 6 is secured to the housing by means not shown.
  • the contact carrier 3 is mounted on the housing, for example by means of pins 10 engaged in corresponding holes in the housing, so as to be able to oscillate around the axis X.
  • the compression spring 7 acts on the movable contact 2 at a point P thereof which is located on the same face 11 as the active area 4 of this movable contact 2 so as to push the latter against the contact carrier 3 at two points Q and R which are spaced from one another and situated on the other face 12 of the movable contact 2.
  • point P On designates by point of action point P and by points of reaction points Q and R.
  • the point of reaction Q is more distant from the active zone 4 and the point of reaction R less distant from this active zone 4 as the action point P. In other words, if we neglect the thickness of the movable contact 2, we can say that the action point is located between the points Q and R.
  • the point P is constituted by a deformation of the movable contact 2 in the form of a roll or semi-cylindrical projection 15 while the reaction points Q and R are materialized respectively by semi-cylindrical projections 13 and 14 which are molded with the holder. contact 3.
  • the action point P is located approximately halfway between points Q and R, if we neglect the thickness of the movable contact 2.
  • the compression spring 7 bears, at one end, on the wall element 1 and acts by its other end on the roller 15.
  • this other end can be constituted by a turn 16 more or less closed on it - even in a ring.
  • the contact carrier 3 is actuated by means (not shown) which attack it through a hole 17 formed at one of its ends, the assembly being such that the contact carrier 3 is always stopped alternately at the two positions of limit switches shown.
  • the assembly In the end position shown in Figure 1 (working position), where the two active zones 4 and 5 are in contact with each other and where the movable contact 2 touches the contact carrier 3 at the point of reaction R the least distant from its active area 4, the assembly is such that there is (at least in the absence of significant wear of the rivets 8 and 9) a wear stroke a between the face 12 of the movable contact 2 and the contact carrier 3 at the other point of reaction P, that is to say at the level of the projection 13.
  • the blade constituting the movable contact 2 is bent, as shown in the figures, between two rectilinear parts roughly parallel to each other, namely a first part where the action points P and reaction point Q are located. , R and a second part where the active zone 4 is located, thanks to the presence of an inclined intermediate part 18, so as to increase the space available for housing the spring 7.
  • the distance b between the reaction point R the least distant from the active area 4 of the movable contact 2 and the point P is preferably of the order of half the distance c between this same reaction point R and the said active area 4, these distances being measured in the longitudinal direction of the movable contact 2.
  • the contact carrier 3 has, on either side of the lateral ends of the boss forming the reaction zone R, two small bosses 19 oriented downwards and penetrating with relatively little play in two lateral notches 20 formed in the first rectilinear part of the contact 2, at a short distance from the inclined part 18. A connection is thus ensured substantially securing the contact carrier 3 and the contact 2 in the longitudinal direction of the movable contact 2.
  • a switch is thus obtained, the operation of which is as follows.
  • the spring 7, acting at the point of action P tends to rotate the contact movable 2 around the reaction point R clockwise, i.e. applying the active area 4 of the movable contact 2 against the active area 5 of the fixed contact 6 with a force which, in reason for the relationship between the distances b and c, is of the order of half the force exerted by the spring 7 on the movable contact 2 at the point of action P.
  • the wear stroke a At the level of the reaction point Q, there is the wear stroke a.
  • the contact carrier 3 When, starting from the working position of FIG. 1, the contact carrier 3 is tilted anti-clockwise around the X axis, this causes the projection 14 to lift up until , under the action of the spring 7, the movable contact 2 comes to touch the contact carrier 3 not only at the reaction point R, but also at the reaction point Q, the active zones 4 and 5 having hitherto remained pressed one over the other by the spring 7. From this intermediate position where the movable contact 2 has come to touch the reaction point Q, the spring 7 ceases to exert on the movable contact 2 a torque tending to cause it to rock around reaction point R, clockwise. Indeed, by exerting its thrust between the reaction points .Q and R on the movable contact 2, it secures the latter with the contact carrier 3 which therefore drives the movable contact 2 to the rest position shown in the figure 2.
  • the contact rivets 8, 9 are located inside a breaking chamber 21 closed on all sides except for an opening 22 necessary for the movement of the end of the movable contact 2 which carries the rivet 8.
  • This chamber 21 contains reinforcements 23 capable of creating a magnetic deionization field during the separation of the contact rivets 8, 9.
  • the contact carrier has, at the opening 22, a lip 24 whose outer surface oriented towards the chamber 21 is circular cylindrical centered on the pivot axis X. This lip 24 determines with the end 25 of the wall of the chamber 21 a very narrow passage 26 present whatever the position of the contact carrier 3, which significantly increases the electrical insulation of the chamber 21 and its contents relative to the rest (not seen) of the switch.

Landscapes

  • Push-Button Switches (AREA)
  • Tumbler Switches (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Switches With Compound Operations (AREA)
EP84401956A 1983-10-04 1984-10-01 Schalter mit schwenkbarem Kontaktträger Expired EP0142404B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84401956T ATE44191T1 (de) 1983-10-04 1984-10-01 Schalter mit schwenkbarem kontakttraeger.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8315783 1983-10-04
FR8315783A FR2552926B1 (fr) 1983-10-04 1983-10-04 Perfectionnements apportes aux interrupteurs a porte-contact basculant

Publications (2)

Publication Number Publication Date
EP0142404A1 true EP0142404A1 (de) 1985-05-22
EP0142404B1 EP0142404B1 (de) 1989-06-21

Family

ID=9292795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84401956A Expired EP0142404B1 (de) 1983-10-04 1984-10-01 Schalter mit schwenkbarem Kontaktträger

Country Status (4)

Country Link
EP (1) EP0142404B1 (de)
AT (1) ATE44191T1 (de)
DE (1) DE3478774D1 (de)
FR (1) FR2552926B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2583571A1 (fr) * 1985-06-12 1986-12-19 Merlin Gerin Disjoncteur basse tension a coupure amelioree.
WO2005031775A1 (de) * 2003-09-25 2005-04-07 Siemens Aktiengesellschaft Niederspannungs-leistungsschalter mit radialer kontaktbewegung durch integration der kontaktträger in die schaltwelle

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2709205B1 (fr) * 1993-08-17 1995-10-20 Merlin Gerin Interrupteur différentiel tétrapolaire.
DE19948695B4 (de) * 1999-09-30 2009-02-05 Siemens Ag Niederspannungs-Leistungsschalter mit einem bewegbaren Kontaktträger mit Endlagen-Haltefeder
DE50001582D1 (de) * 1999-09-30 2003-04-30 Siemens Ag Niederspannungs-leistungsschalter mit einer schaltkammer und einem bewegbaren kontaktträger
FR2999793A1 (fr) * 2012-12-14 2014-06-20 Schneider Electric Ind Sas Arbre de support des contacts mobiles dans un appareil de coupure du courant electrique, et appareil de coupure de courant le comportant, en particulier un disjoncteur de branchement.
DE102015110644A1 (de) 2015-07-02 2017-01-05 Phoenix Contact Gmbh & Co. Kg Vorrichtung zur trennbaren elektrischen Verbindung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE643986C (de) * 1935-03-13 1937-04-22 Oerlikon Maschf Elektrischer Schalter
US3286067A (en) * 1963-06-06 1966-11-15 Ite Circuit Breaker Ltd Contact pressure arrangement for circuit breaker mechanism
EP0081805A2 (de) * 1981-12-12 1983-06-22 Licentia Patent-Verwaltungs-GmbH Kontaktanordnung für einen Selbstschalter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE643986C (de) * 1935-03-13 1937-04-22 Oerlikon Maschf Elektrischer Schalter
US3286067A (en) * 1963-06-06 1966-11-15 Ite Circuit Breaker Ltd Contact pressure arrangement for circuit breaker mechanism
EP0081805A2 (de) * 1981-12-12 1983-06-22 Licentia Patent-Verwaltungs-GmbH Kontaktanordnung für einen Selbstschalter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2583571A1 (fr) * 1985-06-12 1986-12-19 Merlin Gerin Disjoncteur basse tension a coupure amelioree.
EP0206882A1 (de) * 1985-06-12 1986-12-30 Merlin Gerin Niederspannungsschalter mit Unterbrechung
US4672157A (en) * 1985-06-12 1987-06-09 Merlin Gerin Low voltage circuit breaker with improved breaking
WO2005031775A1 (de) * 2003-09-25 2005-04-07 Siemens Aktiengesellschaft Niederspannungs-leistungsschalter mit radialer kontaktbewegung durch integration der kontaktträger in die schaltwelle

Also Published As

Publication number Publication date
FR2552926A1 (fr) 1985-04-05
FR2552926B1 (fr) 1985-12-27
DE3478774D1 (en) 1989-07-27
EP0142404B1 (de) 1989-06-21
ATE44191T1 (de) 1989-07-15

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