EP0616351B1 - Schalteinrichtung, insbesondere Schutzschalter - Google Patents

Schalteinrichtung, insbesondere Schutzschalter Download PDF

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Publication number
EP0616351B1
EP0616351B1 EP93104531A EP93104531A EP0616351B1 EP 0616351 B1 EP0616351 B1 EP 0616351B1 EP 93104531 A EP93104531 A EP 93104531A EP 93104531 A EP93104531 A EP 93104531A EP 0616351 B1 EP0616351 B1 EP 0616351B1
Authority
EP
European Patent Office
Prior art keywords
switching device
movable contact
contact
tensioning lever
moving contact
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.)
Expired - Lifetime
Application number
EP93104531A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0616351A1 (de
Inventor
Christian Dipl.-Ing. Weinzierl
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.)
Siemens AG
Original Assignee
Siemens AG
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
Priority to ES93104531T priority Critical patent/ES2088804T3/es
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT93104531T priority patent/ATE138760T1/de
Priority to EP93104531A priority patent/EP0616351B1/de
Priority to DE59302753T priority patent/DE59302753D1/de
Priority to TR00159/94A priority patent/TR27419A/xx
Priority to IL10870294A priority patent/IL108702A/en
Priority to IL10874694A priority patent/IL108746A/xx
Publication of EP0616351A1 publication Critical patent/EP0616351A1/de
Application granted granted Critical
Publication of EP0616351B1 publication Critical patent/EP0616351B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • H01H1/34—Contacts characterised by the manner in which co-operating contacts engage by abutting with provision for adjusting position of contact relative to its co-operating contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0075—Apparatus or processes specially adapted for the manufacture of electric switches calibrating mechanical switching properties, e.g. "snap or switch moment", by mechanically deforming a part of the switch, e.g. elongating a blade spring by puncturing it with a laser

Definitions

  • the invention relates to a switching device, in particular circuit breakers, such as circuit breakers, the at least one of their switch contacts as a moving contact via kinematics, which can be part of a switch lock, is connected to a manual control element, and whose contact wear can be compensated for by an adjustable overstroke.
  • circuit breakers such as circuit breakers
  • Switching devices of this type are on the market.
  • the moving contact in the assembly has so far usually been deformed in such a way that the desired contact opening is achieved in a certain position in the open position of the contacts. If there is sufficient contact overrun, this ensures that a moving contact makes contact with its mating contact, usually the fixed contact, both in the case of new contacts and in the case of worn contacts.
  • manufacturing-related tolerances can influence both the overstroke and the opening distance until the respective minimum dimensions are undershot. In practice, therefore, the moving contact had to be deformed in such a way that both the contact overstroke and the opening distance were ensured.
  • the invention has for its object to develop a switching device whose design principle allows the adjustment to be simplified so that it can also be carried out in large-scale industrial assembly with technical means.
  • a link works as a clamping lever with the moving contact, in that the moving contact has a bendable web as an adjustment web in a rigid basic structure.
  • the adjustment web rests on an associated contact edge in the open position of the contacts by means of an engagement body. Since the adjustment web is designed in a rigid basic structure, it can be deformed in a suitable basic position of the switch lock or the moving contacts in its open position until the engaging body rests on an associated contact edge.
  • the adjustment can be achieved, for example, by mechanical intervention of a corresponding bending mandrel.
  • the engaging body is designed as a molded part of the moving contact. You are then independent of the thickness of the moving contact, for which you have to take into account the intended current strength. The adjustment process is then independent of the nominal distance of the switching device. The assignment of clamping lever, moving contact and fixed contact can be set up in a single adjustment process. The advantage then is that there is no need to deform wherever there is to be measured. If one measures or adjusts the contact distance, it is sufficient to make deformations on the adjusting web of the tensioning lever.
  • the tensioning lever guides the moving contact about an axis of rotation
  • the moving contact extending on both sides to its axis of rotation with two legs, one leg can have the contact point and the other leg can form the engagement body for the adjustment web of the tensioning lever.
  • the switching device When the switching device is designed as a circuit breaker, it is advantageous if the moving contact forms an area of action for an armature.
  • the engagement of the plunger When adjusting the assignment of the tension lever, moving contact and fixed contact, the engagement of the plunger is not changed.
  • the assignment to the submersible anchor is therefore not influenced in the desired manner during adjustment.
  • the circuit breaker Even large tolerance ranges can be compensated or adjusted with small adjustment paths and thus in a small installation space.
  • a translation with respect to the engagement body axis of rotation to the contact axis of rotation is beneficial.
  • the moving contact can easily form a driver area for a submersible anchor.
  • the moving contact has a structure in two planes which are connected by at least one bridge, in particular according to claim 6, the kinematics can be accommodated in the vicinity of a side wall of a housing of the switching device and gain construction space which is otherwise required in the central area .
  • the contact area can be provided between the detected structural part in one plane and the other, the second structural part in the other plane, which forms the engaging body as a molded part for contacting the adjustment web of the tensioning lever.
  • the bridge for connecting the two structural parts of the moving contact can be matched to the area of action of an armature by arrangement and shaping.
  • the bridge can be U-shaped according to claim 7 in order to form an area of action for a submersible anchor on the inner curvature. With the arrangement of the bridge, one can also take into account simple, easy manufacture or make space by suitable bulging.
  • the engaging body of the moving contact for bearing against the adjusting web of the tensioning lever can be designed as a passage in the second structural part against which the tensioning lever is pressed under spring force.
  • the tensioning lever also has a structure in two planes, the two structural parts being connected by a bridge and the tensioning lever leading the moving contact about an axis of rotation which is held between these structural parts, in particular according to claim 9
  • Compression spring on the axis of rotation can bring the passage in the structural part of the moving contact into contact with the adjustment web of the tensioning lever.
  • the passage can be pressed out of a stamped part like a dome.
  • the compression spring according to claim 10 at the same time as a torsion spring that braces the tensioning lever and the moving contact and effects the contact force.
  • a second torsion spring can be arranged on the axis of rotation, which braces the tensioning lever and the moving contact and which, together with the first torsion spring which also acts as a compression spring, brings about the contact force.
  • a flat spring characteristic can be achieved by a large contact force as the sum of two springs, so that the contact force remains almost unchanged in the event of erosion and corresponding changes in the position of the moving contact, which is beneficial for the electrical properties of the switching device.
  • the first structural part of the moving contact forms a system for a latching rod which is articulated on the manual control element and causes a latching position for the moving contact on its switch-on path to the fixed contact, which is suddenly released by the latching rod before the switch-on movement ends becomes.
  • a switching device comes in Compared to a version without instantaneous engagement without increased engagement force.
  • it is sufficient to hang the latching rod in the roller body in a manual control element with a roller-shaped body about the axis of rotation. It is favorable to carry out the rest area in the vicinity of the fixed contact, so that the path and time to the contact system are short.
  • the switching device according to FIG 1 can be understood as an on and off switch or as a circuit breaker without a trigger system, in particular without an armature of the magnetic trigger is illustrated.
  • the switching device 1 has switching contacts, a fixed contact 2 and a moving contact 3.
  • the moving contact can be actuated from a manual control element 6 via a kinematics 4, which can be part of a switch lock 5.
  • the effects of contact erosion in the closed position of the contacts are compensated for by an adjustable overstroke.
  • the manual control element 6 merges into a roller-shaped body 7 with a rotary bearing 8.
  • a link is designed as a tensioning lever 9, which cooperates with the moving contact 3, in which the tensioning lever 9 or the moving contact 3 has a bendable web as an adjusting web 10 in a rigid basic structure.
  • the adjustment web 10 can rest against a contact edge 12 in the open position of the contacts.
  • the tensioning lever 9 has a bendable web as an adjustment web 10 in a rigid basic structure.
  • the engaging body 11 is designed as a molded part of the moving contact 3.
  • the adjustment web 10 in the surrounding rigid basic structure of the tensioning lever 9 is adjusted by being bent out until its contact edge 12 abuts the engagement body 11 in the open position of the contacts 2 and 3.
  • the adjusting web 10 is limited in a straight line in its initial state and is bent out to the lines shown in broken lines.
  • the tensioning lever 9 guides the moving contact 3 about an axis of rotation 24, the moving contact extending on both sides to its axis of rotation 24 with two legs, one leg of which receives the contact point or the contact piece 14.
  • the other leg forms the entry body 11 to the adjusting web 10 of the tensioning lever 9.
  • the moving contact 3 forms an area of action 17 of an armature 18.
  • the armature 18 is designed as a submersible anchor and the area of action 17 as a driver area.
  • the moving contact 3 has a structure in two planes, at least in the area of the tensioning lever 9, which are connected by at least one bridge, as can be seen in conjunction with FIG. 3 according to one exemplary embodiment.
  • a first structural part 19 runs in one plane and the other, second structural part 20 in another plane; it forms the engagement body 11 as a molded part.
  • the actual contact area with the contact piece 14 extends between the levels.
  • the bridge 21 between the structural parts 19 and 20 can in particular be U-shaped, as can be seen from FIG. 6.
  • the engaging body 11 of the moving contact 3 can be designed as a passage in the second structural part 20.
  • the adjusting web 10 of the clamping lever 9 is pressed against the engagement body 11 in the second structural part 20 of the moving contact 3 under the pressure force of the spring 22.
  • the spring 22 also acts as a torsion spring, in that it clamps on the one hand against the bridge 21 of the moving contact 3 and on the other hand against an arm of the tensioning lever 9.
  • the contact force can be supplemented by a further spring 23, which is designed as a torsion spring.
  • First structural part and second structural part 19, 20 form arms which are spaced apart for receiving an axis of rotation 24.
  • the tensioning lever 9 also has a structure in two planes, the two structural parts 25 and 26 being connected to one another by a bridge 27.
  • the clamping lever 9 forms an axis of rotation 24 which is held between these structural parts and guides the moving contact 3.
  • the first structural part 19 of the moving contact 3 forms a system for a locking rod 28 which is guided in the roller body 7 of the manual actuating element 6 the switch-on movement for the moving contact on the first structural part 19 of the moving contact 3.
  • the latching rod is withdrawn, so that it suddenly releases the switch contacts into the switch-on position on a step-shaped profile.
  • the step-shaped profile of the system 30 of the first structural part 19 of the moving contact 3 is illustrated in FIGS. 2, 4 and 5.
  • FIG. 4 shows the open position of the switch contacts
  • FIG. 5 shows an intermediate position for the switch-on process
  • FIG. 2 shows the switch-on position.
  • the locking rod 28 Since the locking rod 28 is articulated directly on the manual control element 1 with its roller body 7 or a corresponding lever arm, tolerances due to the transmission remain without influence. On the other hand, the latching position can be carried out in the vicinity of the fixed contact 2, so that tolerance-dependent movements are further shortened.
  • the locking rod 28 is deposited on a housing rib 31 in the sense of an abutment and on the system 30 of the moving contact 3.
  • the moving contact 3 has a tab on one of its structural parts in the vicinity of its axis of rotation 24 32 according to FIG. 7 for welding conductors, in particular stranded conductors.
  • a favorable construction of the moving contact can be seen from the overview of FIGS. 7 and 8.
  • a favorable construction of the tensioning lever 9 can be seen from the overview of FIGS. 9, 10 and 11. 9 is advantageously widened towards the axis of rotation 24 in order to leave the axis of rotation 24 with sufficient strength within a rigid basic structure 33.
  • the clamping lever 9 can be integrated into the kinematics of the switching device by means of a further axis of rotation 34.

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Breakers (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Burglar Alarm Systems (AREA)
  • Electronic Switches (AREA)
EP93104531A 1993-03-19 1993-03-19 Schalteinrichtung, insbesondere Schutzschalter Expired - Lifetime EP0616351B1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AT93104531T ATE138760T1 (de) 1993-03-19 1993-03-19 Schalteinrichtung, insbesondere schutzschalter
EP93104531A EP0616351B1 (de) 1993-03-19 1993-03-19 Schalteinrichtung, insbesondere Schutzschalter
DE59302753T DE59302753D1 (de) 1993-03-19 1993-03-19 Schalteinrichtung, insbesondere Schutzschalter
ES93104531T ES2088804T3 (es) 1993-03-19 1993-03-19 Dispositivo de conmutacion, especialmente interruptor de proteccion.
TR00159/94A TR27419A (tr) 1993-03-19 1994-02-15 Salterleme techizati, bilhassa koruma salteri.
IL10870294A IL108702A (en) 1993-03-19 1994-02-18 Disconnects protective circuit
IL10874694A IL108746A (en) 1993-03-19 1994-02-23 Switching device especially a protective circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93104531A EP0616351B1 (de) 1993-03-19 1993-03-19 Schalteinrichtung, insbesondere Schutzschalter

Publications (2)

Publication Number Publication Date
EP0616351A1 EP0616351A1 (de) 1994-09-21
EP0616351B1 true EP0616351B1 (de) 1996-05-29

Family

ID=8212717

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93104531A Expired - Lifetime EP0616351B1 (de) 1993-03-19 1993-03-19 Schalteinrichtung, insbesondere Schutzschalter

Country Status (6)

Country Link
EP (1) EP0616351B1 (es)
AT (1) ATE138760T1 (es)
DE (1) DE59302753D1 (es)
ES (1) ES2088804T3 (es)
IL (2) IL108702A (es)
TR (1) TR27419A (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19743037A1 (de) * 1997-09-30 1999-04-01 Siemens Ag Schutzschalter
DE102010019033B4 (de) * 2010-05-03 2012-02-23 Abb Ag Elektrisches Installationsschaltgerät
CN104900453B (zh) * 2015-05-28 2017-05-10 温州锐能电器有限公司 漏电断路器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436492A1 (fr) * 1978-09-12 1980-04-11 Merlin Gerin Disjoncteur multipolaire basse tension equipe d'un dispositif de positionnement du barreau
US4551597A (en) * 1983-12-19 1985-11-05 Westinghouse Electric Corp. Molded case circuit breaker with adjustable stationary lower electrical contact

Also Published As

Publication number Publication date
ATE138760T1 (de) 1996-06-15
IL108746A0 (en) 1994-05-30
TR27419A (tr) 1995-04-14
EP0616351A1 (de) 1994-09-21
ES2088804T3 (es) 1996-09-16
IL108702A0 (en) 1994-05-30
IL108702A (en) 1998-08-16
DE59302753D1 (de) 1996-07-04
IL108746A (en) 1997-02-18

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