EP0003497B1 - Dispositif de réglage avec des plots à cran d'arrêt, pour déclencheurs d'appareils de commutation - Google Patents

Dispositif de réglage avec des plots à cran d'arrêt, pour déclencheurs d'appareils de commutation Download PDF

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Publication number
EP0003497B1
EP0003497B1 EP79100030A EP79100030A EP0003497B1 EP 0003497 B1 EP0003497 B1 EP 0003497B1 EP 79100030 A EP79100030 A EP 79100030A EP 79100030 A EP79100030 A EP 79100030A EP 0003497 B1 EP0003497 B1 EP 0003497B1
Authority
EP
European Patent Office
Prior art keywords
setting
pegs
locking
setting element
longitudinal axis
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
Application number
EP79100030A
Other languages
German (de)
English (en)
Other versions
EP0003497A1 (fr
Inventor
Werner Troebel
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
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0003497A1 publication Critical patent/EP0003497A1/fr
Application granted granted Critical
Publication of EP0003497B1 publication Critical patent/EP0003497B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H2019/008—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand with snap mounting of rotatable part on fixed part, e.g. rotor on stator, operating knob on switch panel
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H2071/7481—Means for adjusting the conditions under which the device will function to provide protection with indexing means for magnetic or thermal tripping adjustment knob

Definitions

  • the invention relates to an adjusting device with latching stages for triggers of electrical switching devices, in particular for low-voltage circuit breakers with an insulating housing, with an outer and an inner adjusting member accessible on the outside of the switching device and with a bearing part for rotatably mounting the adjusting members.
  • Adjustment devices of this type are known for example from GB-PS 1 400 039 and US-PS 3 831 120. These devices have the task of setting thermal or magnetic triggers of the switching devices by rotating the outer setting member to a certain tripping current. For this purpose, a certain force must be transmitted to the inner adjusting member in order to adjust parts belonging to the triggers, such as magnetic armatures, actuators for bimetallic strips or the like, with restoring forces generally having to be overcome.
  • the setting should not change automatically under the influence of normal operational forces.
  • the catch provided on the adjusting device must therefore be able to absorb both the effects resulting from the restoring forces of the inner parts of the triggers and also external operational forces.
  • the previous setting devices consist of a number of components corresponding to the subtasks.
  • she considered the setting device according to DE-AS 10 67 514 as a further example.
  • An outer setting member is mounted on a round shaft, which in turn is held on bearing parts.
  • the inner adjusting member is formed by an eccentric that sits on an eccentric collar of the outer adjusting member.
  • a lever fastened to the round shaft is provided, which is supported by spring force on the bearing part or the housing and has a latching cutting edge which engages in latching grooves on the inside of the outer adjusting member.
  • the invention has for its object to reduce the number of parts required to manufacture adjusting devices of the type mentioned and thereby reduce the space requirement.
  • Interrupted ring snap connections are known per se and are used in a variety of ways to connect parts of mechanical engineering and precision engineering (magazine “Konstrutation” 29 (1977), H. 10, pp. 387-397; magazine “verbschlußstechnik,” H. 7/8, 1977, pp. 29-33).
  • the annular snap connection comprises two pairs of pins arranged opposite one another, the pins of the one pair being undercut at right angles to the longitudinal axis of the adjusting members and arranged lying on the extension of the longitudinal axis of the locking arm, and wherein the pins of the second pair are provided with the approximately radially projecting approaches.
  • the support effect of the sharp-edged undercut pins against the asymmetrical force emanating from the locking arm is best used here.
  • the sharp-edged undercut pins can extend over the larger part and the pins provided with the projections over the smaller part of the circumference of the ring snap connection.
  • the upper part of the housing of the switching device can serve as a bearing part for the purposes of the invention.
  • the bearing part can be provided with locking grooves surrounding the bearing opening within the scope of the invention. In this way, there are no additional elements for the locking steps.
  • the latching arm of the inner adjusting member can have a curvature caused in the manufacture of the inner adjusting member, such that when the adjusting members are joined together, a latching cutting edge of the latching arm with a pretension engages approximately parallel in the latching grooves. This desired preload and thus the locking force thus inevitably arises when the adjusting device is installed.
  • the inner adjusting member can additionally be provided with an eccentric extension in the form of a pin, a control cam or the like, which interacts directly with an actuator of a trigger. This arrangement is both space-saving and precise with regard to the setting of certain trigger values.
  • the adjustment members can be made of suitable plastics by the known processing methods. Good results can be achieved, for example, with polyamides or terephthalates.
  • Fig. 1 shows a low-voltage circuit breaker in a partially broken side view.
  • the switch shown in FIG. 1 is partially shown in plan view in FIG. 2.
  • The. Fig. 3 shows an inner adjusting member in section.
  • FIG. 5 shows a side view of the outer adjusting member according to FIG. 6.
  • FIG. 8 shows an interior view of an upper part of a housing.
  • the low-voltage circuit breaker 1 shown in a partially sectioned side view in FIG. 1 has an insulating housing 2, which is divided along a joint 3 into a lower part 4 and an upper part 5.
  • the current path runs, starting from a connecting terminal 6, via a fixed contact 7 and a moving contact 8 as well as a flexible conductor 10 and a heating conductor 11 to a further connecting terminal 13.
  • the moving contact 8 is by means of a contact carrier 14 through a switching shaft 15 to the on - Moving on and off.
  • the switching shaft 15 connects the contact piece carrier 14 of the current paths of the low-voltage circuit breaker 1 arranged parallel to one another.
  • the drive forces are transmitted via a mechanism, not shown, known per se to a hinge pin 16 which connects the movable contact piece 8 and the contact piece carrier 14 to one another.
  • the drive mechanism acts, as is known, on the hinge pin 16 of the central pole of the low-voltage circuit breaker 1.
  • FIG. 2 From Fig. 2 it can be seen that on the front surface of the upper part 5 of the insulating housing 2 below the actuating handle 17 an outer adjusting member 30 is arranged which has a slot 31 for the introduction of a suitable tool, e.g. of a screwdriver, and is provided with a marking 32 which is assigned a scale 33 with graduation marks for certain tripping currents.
  • An inner adjusting member, which acts on the actuator 22, can be rotated by the outer adjusting member 30.
  • the inner adjusting member 40 which is produced from a suitable plastic by injection molding, has a cylindrical neck part 41, which for rotatably mounting the adjusting device in a correspondingly dimensioned opening in the upper part 5 of the insulating material housing 2 serves.
  • a further cylindrical section 42 which extends over approximately 3/4 of the circumference, is provided for bearing against the front surface of the housing wall. In the remaining gap, the cylindrical section 42 merges into a locking arm 43, the end of which is provided with a roof-like locking cutting edge 44. As can be seen in FIG.
  • the locking arm 43 is curved in itself in order to bring the locking cutting edge 44 into contact with housing-side locking grooves with a desired pretension when the cylindrical section 42 bears against the inner housing wall.
  • the inner adjusting member 40 also carries an eccentrically arranged pin 45.
  • the central opening 46 of the adjusting member 40 is undercut by a protrusion 47 at right angles and widens upwards with a conical opening 50.
  • the opening 46 is through two Recessing recesses 51 expanded with parallel flanks 52 and 53.
  • the flanks 53 lie in a plane 55 running through the longitudinal axis 54 of the opening 46.
  • FIGS. 5 and 6 An outer adjusting member 60 cooperating with the inner adjusting member 40 is shown in FIGS. 5 and 6.
  • This outer one Actuator comprises a flat cylindrical part 61 with one for inserting a suitable tool.
  • a suitable tool for example, a screwdriver, provided slot 62.
  • the pins 64 each extend over approximately 110 °, while the pins 65 occupy approximately 70 °.
  • the pins 64 have an approximately mushroom-like profile and accordingly have a foot part 66 emerging vertically from the surface of the cylindrical part 61 and a head part 67 which is provided with a conical outer surface 68.
  • the outer diameter of the lateral surface is larger than the diameter of the foot part 66.
  • the transition is formed by a step 70 with a sharp-edged design.
  • the smaller pins 65 each have half of their extent in the circumferential direction a section 71 whose outer diameter corresponds to the diameter of the foot part 66 of the larger pins 64.
  • the other half is formed by a projection 72, which has parallel flanks 73 and 74.
  • the flanks 74 lie in a plane which runs through the longitudinal axis 54 (FIG. 6) of the ring snap connection. 6 shows that the pins 65 are shorter than the pins 64 and extend up to approximately the step 70 of the larger pins 64.
  • the inner adjusting member 40 and the outer adjusting member 60 are joined together by pressure.
  • the conical lateral surface 68 initially lies in the inner conical opening 50 of the inner adjusting member 40, as a result of which both parts are centered against one another.
  • the arrangement consisting of the outer and the inner adjusting member is mounted with the cylindrical neck part 41 of the inner adjusting member 40 in a corresponding bore 80 of the upper part 5 of the insulating material housing 2. As shown in FIG. 7, this bore 80 is followed by a cylindrical extension 81 for receiving the cylindrical upper part of the outer adjusting member 60. On the inside of the upper part 5, the bore 80 is surrounded at a distance by a ring of locking grooves 82 with which the locking arm 43 interacts. Depending on whether the triggers of the individual poles should be adjustable individually or together, the arrangement described can be single or multiple. While a common setting device is shown in FIG. 2, in the arrangement according to FIG. 8, which shows an upper part 5 of a low-voltage circuit breaker from the inside, three bores 80 for setting devices are provided next to one another.
  • an adjusting device 100 which in turn comprises an inner adjusting member 101 with a radially extending locking arm 102 and an eccentric pin 103 and an outer adjusting member 104, is mounted on a separate bearing part 105, which is part of a circuit board the switch can be.
  • This bearing part 105 which is shown enlarged in plan view in FIG. 12, has a bearing opening 106 and locking grooves 107, in which the locking arm 102 engages with its locking cutting edge.

Landscapes

  • Breakers (AREA)

Claims (7)

1. Dispositif de réglage comportant des gradins d'encliquetage pour des déclencheurs d'appareils électriques de commutation, notamment pour des disjoncteurs à basse tension (1), du type comportant un boîtier en matériau isolant (2), un organe extérieur de réglage (60) accessible du côté extérieur de l'appareil de commutation, un organe intérieur de réglage (40) ainsi qu'une pièce formant palier (5) pour le support, avec possibilité de rotation, des organes de réglage, caractérisé par le fait que l'organe intérieur de réglage (40; 101) porte un bras d'encliquetage (43; 102), s'étendant sensiblement radialement et ayant une propriété élastique perpendiculairement à son axe longitudinal (54) et en direction de la pièce formant palier (pièce supérieure 5; 105), et peut être réuni à l'organe extérieur de réglage (60; 104) au moyen d'un système de liaison annulaire interrompue à enclenchement (46, 51, 64, 65), qui engrène avec le tenon (64, 65), élastique radialement, qui est disposé sur l'organe extérieur de réglage (60; 104) et comportant une partie en contre dépouille à arêtes vives pour absorber les forces dissymétriques, et avec au moins une partie (72) saillant approximativement radialement pour absorber un couple de rotation, dans un évidement correspondant (ouverture 46, 51) de l'organe intérieur de réglage (40; 101).
2. Dispositif de réglage suivant la revendication 1, caractérisé par le fait que le système de liaison annulaire à enclenchement comporte deux couples de tenons (64, 65) disposés en vis à vis, et que les tenons (64) d'un couple sont réalisés avec une contre dépouille à arêtes vives à angle droit par rapport à l'axe longitudinal (54) des organes de réglage (40, 60) et sont disposés sur le prolongement de l'axe longitudinal (56) du bras d'encliquetage (43), tandis que les tenons du second couple sont munis d'appendices (72) faisant saillie approximativement radialement.
3. Dispositif de réglage suivant la revendication 2, caractérisé par le fait que les tenons (64), qui comportent une partie en contre dépouille à arêtes vives, s'étendent sur la majeure partie du pourtour circulaire du système de liaison annulaire à enclenchement et que les tenons (65) qui sont munis des appendices saillants (72), s'étendent sur la plus petite partie dudit pourtour circulaire.
4. Dispositif de réglage suivant la revendication 3, caractérisé par le fait que les appendices saillants (72) possèdent des flancs (73, 74) disposés dans des plans parallèles à l'axe longitudinal (54) du système de liaison annulaire à enclenchement.
5. Dispositif de réglage suivant la revendication 1, caractérisé par le fait que la pièce formant palier (pièce supérieure 5; 105) possède des gradins d'encliquetage (82; 107) entourant l'ouverture du palier (perçage 80; 106).
6. Dispositif de réglage suivant la revendication 1, caractérisé par le fait que le bras d'encliquetage (43) possède une courbure réalisée lors de la fabrication de l'organe intérieur de réglage (40), de telle manière que, lorsque les organes de réglage (40, 60) sont assemblés, un couteau d'encliquetage (44) du bras d'encliquetage (43) s'engage sous l'effet d'une contrainte préalable approximativement parallèlement dans les encoches d'encliquetage (82).
7. Dispositif de réglage suivant la revendication 1, caractérisé par le fait que l'organe intérieur de réglage (40; 101) coagit directement, au moyen d'un téton excentré (téton 45; 103), avec un organe de réglage (22; 112) d'un déclencheur.
EP79100030A 1978-02-03 1979-01-05 Dispositif de réglage avec des plots à cran d'arrêt, pour déclencheurs d'appareils de commutation Expired EP0003497B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2805181 1978-02-03
DE2805181A DE2805181C2 (de) 1978-02-03 1978-02-03 Einstellvorrichtung mit Raststufen für Auslöser elektrischer Schaltgeräte

Publications (2)

Publication Number Publication Date
EP0003497A1 EP0003497A1 (fr) 1979-08-22
EP0003497B1 true EP0003497B1 (fr) 1981-05-20

Family

ID=6031375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79100030A Expired EP0003497B1 (fr) 1978-02-03 1979-01-05 Dispositif de réglage avec des plots à cran d'arrêt, pour déclencheurs d'appareils de commutation

Country Status (4)

Country Link
US (1) US4211907A (fr)
EP (1) EP0003497B1 (fr)
JP (1) JPS54113876A (fr)
DE (1) DE2805181C2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4520244A (en) * 1982-12-27 1985-05-28 Eaton Corporation Constant load snap switch with manual or automatic reset, stop and test selection
FR2573572B1 (fr) * 1984-11-16 1987-01-09 Telemecanique Electrique Appareil disjoncteur a ouverture et fermeture telecommandees de ses circuits
JPH0218510Y2 (fr) * 1984-12-06 1990-05-23
DE3545845C2 (de) * 1985-12-23 1993-10-07 Asea Brown Boveri Mehrphasiger Schutzschalter mit einer Vorrichtung zur Strombereichseinstellung
CH669066A5 (de) * 1986-03-20 1989-02-15 Sprecher & Schuh Ag Umstellvorrichtung fuer einen elektrischen schalter.
ATE106161T1 (de) * 1988-12-06 1994-06-15 Hager Electro Elektrische schutzvorrichtung mit einer feststellvorrichtung der einstellschraube des bimetalls für einen thermischen schutzschalter, der in einem gehäuse eingesetzt ist.
US5075658A (en) * 1990-07-16 1991-12-24 General Electric Company Molded case circuit breaker trip-to-test button and auxiliary switch interface
KR101096988B1 (ko) * 2008-12-31 2011-12-20 엘에스산전 주식회사 트립 장치

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1067514B (de) 1955-10-15 1959-10-22 Calor Emag Elektrizitaets Ag Ausloeseeinrichtung fuer mehrpolige Leistungs-Selbstschalter
US2920161A (en) * 1959-01-16 1960-01-05 Square D Co Magnetic trip device
FR1529259A (fr) * 1966-06-29 1968-06-14 Square D Co Disjoncteur électrique
US3758887A (en) * 1968-02-06 1973-09-11 Westinghouse Electric Corp Multi-pole circuit breaker with single trip adjustment for all poles
GB1400039A (en) 1972-10-27 1975-07-16 Tokyo Shibaura Electric Co Circuit breaker
US3831120A (en) 1973-11-08 1974-08-20 Gen Electric Trip unit having improved trip adjustment indicator and circuit breaker incorporating same
US3975701A (en) * 1974-10-10 1976-08-17 Westinghouse Electric Corporation Circuit breaker with one-way adjustment of tripping current level

Also Published As

Publication number Publication date
DE2805181B1 (de) 1979-05-03
JPS54113876A (en) 1979-09-05
DE2805181C2 (de) 1979-12-13
EP0003497A1 (fr) 1979-08-22
US4211907A (en) 1980-07-08

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