EP0003497A1 - 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
EP0003497A1
EP0003497A1 EP79100030A EP79100030A EP0003497A1 EP 0003497 A1 EP0003497 A1 EP 0003497A1 EP 79100030 A EP79100030 A EP 79100030A EP 79100030 A EP79100030 A EP 79100030A EP 0003497 A1 EP0003497 A1 EP 0003497A1
Authority
EP
European Patent Office
Prior art keywords
adjusting member
pins
adjusting device
adjusting
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.)
Granted
Application number
EP79100030A
Other languages
German (de)
English (en)
Other versions
EP0003497B1 (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 for 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 the thermal or magnetic triggers of the switching devices to a specific tripping current by rotating the outer setting element. 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 are winds. However, once selected, 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. In accordance with these requirements, the previous setting devices consist of a number of components corresponding to the subtasks.
  • the setting device according to DE-AS 10 67 514 is considered as a further example.
  • an outer adjusting 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 for the production of adjusting devices of the type mentioned and thereby at the same time the space requirement.
  • the adjusting device thus consists of only two parts which are brought into engagement with one another in the correct position by axial pressure. What is essential here is the design of the snap ring connection, such that it is able to absorb not only axial forces, but also asymmetrical forces exerted by the latching arm and, moreover, a torque.
  • Ring snap connections are known per se and are used in various ways for connecting parts of mechanical engineering and precision engineering (magazine “Konstrutechnisch” 29 (1977), H. 10, pp. 387-397; magazine “verbschlußstechnik”, H. 7/8, 1977 , Pp. 29-33).
  • the projections which in the arrangement mentioned above are arranged approximately on a line perpendicular to the extension of the longitudinal axis of the latching arm, can preferably have flanks arranged in planes running parallel to the longitudinal axis of the ring snap connection.
  • the upper part of the housing of the switching device can serve as the bearing part for the purposes of the invention.
  • the bearing part can within the scope of the invention be provided with locking grooves surrounding the bearing opening. 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 engages approximately parallel in the latching grooves with a pretension. 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.
  • FIG. 3 shows an inner adjusting member in section.
  • FIG. 4 shows a top view of the adjusting element according to FIG. 3.
  • FIG. 5 shows a side view of the outer adjusting member according to FIG. 6.
  • FIG. 7 shows a section through an upper part of the housing in the area of the adjusting device.
  • FIG. 8 shows an interior view of an upper part of a housing.
  • Another inner adjusting member is shown in the side view in FIG. 9 and in the top view in FIG. 10.
  • FIG. 11 shows an adjusting device with a separate bearing part, which is shown in FIG. 12.
  • the low-voltage circuit breaker 1 shown in a partially sectioned side view in FIG. 1 has an insulating material 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 parallel parallel current paths of the low voltage Circuit breaker 1.
  • 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.
  • the known thermal and magnetic triggers are provided for the automatic opening of the low-voltage circuit breaker 1.
  • An example of a thermal release is shown in FIG. This comprises as essential parts a bimetallic strip 20 which can be heated by the heating conductor 11, an actuator 22 which can be displaced perpendicularly to the plane of the drawing and a trigger shaft 23.
  • an outer adjusting member 30 is arranged, which has a slot 31 for the introduction of a suitable tool, for. B. 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 contacting 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 mouth 50.
  • the opening 46 is through two opposite recesses 51 with parallel flanks 52 and 53 expanded.
  • the flanks 53 lie in a plane 55 running through the longitudinal axis 54 of the opening 46.
  • FIGS. 5 and 6 A cooperating with the inner adjusting member 40 outer adjusting member 60 is ge in FIGS. 5 and 6 shows.
  • This outer adjusting member comprises a flat cylindrical part 61 with a for inserting a suitable tool, e.g. B. a screwdriver, provided slot 62.
  • a suitable tool e.g. B. a screwdriver
  • the pins 64 extend over each about 110 0, while the pin 65 occupy about 70 0th
  • the pins 64 have an approximately mushroom-shaped 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
  • 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 that runs through the longitudinal axis 54 (FIG. 6) of the ring snap connection.
  • FIG. 6 also 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.
  • the inner adjusting member 40 is ver with a pin 45 see.
  • an eccentric curve 90 can also be provided, as shown in FIGS. 9 and 10. It is possible to combine differently designed inner adjusting members with the same outer adjusting members, depending on the need at hand. Conversely, different outer adjusting members can also be used with the same inner adjusting members, which z. B. differ by the size and shape of the externally accessible part.
  • the parts described can also be used for housings of different wall thicknesses, since it is only necessary to manufacture the inner adjusting members with a different length of their neck parts.
  • 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 the 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.

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  • Breakers (AREA)
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 true EP0003497A1 (fr) 1979-08-22
EP0003497B1 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0242538A1 (fr) * 1986-03-20 1987-10-28 Sprecher + Schuh AG Dispositif de réglage pour un interrupteur électrique
EP0372142A1 (fr) * 1988-12-06 1990-06-13 Hager Electro S.A. Appareil de protection électrique ayant un dispositif de blockage de la vis de réglage de la bilame d'un mécanisme de disjonction thermique monté dans un boîtier

Families Citing this family (6)

* 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
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

Citations (3)

* 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
US3831120A (en) 1973-11-08 1974-08-20 Gen Electric Trip unit having improved trip adjustment indicator and circuit breaker incorporating same
GB1400039A (en) 1972-10-27 1975-07-16 Tokyo Shibaura Electric Co Circuit breaker

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3975701A (en) * 1974-10-10 1976-08-17 Westinghouse Electric Corporation Circuit breaker with one-way adjustment of tripping current level

Patent Citations (3)

* 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
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

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
KONSTRUKTION, vol. 29, no. 10, 1977, pages 387 - 397
VERBINDUNGSTECHNIK, 1977, pages 29 - 33

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0242538A1 (fr) * 1986-03-20 1987-10-28 Sprecher + Schuh AG Dispositif de réglage pour un interrupteur électrique
CH669066A5 (de) * 1986-03-20 1989-02-15 Sprecher & Schuh Ag Umstellvorrichtung fuer einen elektrischen schalter.
US4843196A (en) * 1986-03-20 1989-06-27 Sprecher & Schuh Ag Mode switching device for an electrical switch
EP0372142A1 (fr) * 1988-12-06 1990-06-13 Hager Electro S.A. Appareil de protection électrique ayant un dispositif de blockage de la vis de réglage de la bilame d'un mécanisme de disjonction thermique monté dans un boîtier

Also Published As

Publication number Publication date
EP0003497B1 (fr) 1981-05-20
DE2805181B1 (de) 1979-05-03
DE2805181C2 (de) 1979-12-13
JPS54113876A (en) 1979-09-05
US4211907A (en) 1980-07-08

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