EP0188482A1 - Schaltschloss. - Google Patents
Schaltschloss.Info
- Publication number
- EP0188482A1 EP0188482A1 EP85903288A EP85903288A EP0188482A1 EP 0188482 A1 EP0188482 A1 EP 0188482A1 EP 85903288 A EP85903288 A EP 85903288A EP 85903288 A EP85903288 A EP 85903288A EP 0188482 A1 EP0188482 A1 EP 0188482A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lever
- switch lock
- lock according
- bearing plates
- bearing
- 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
Links
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
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
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
-
- 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
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
-
- 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
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
- H01H71/522—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism
- H01H71/525—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism comprising a toggle between cradle and contact arm and mechanism spring acting between handle and toggle knee
-
- 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
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
- H01H2071/502—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker with direct contact between manual operator and welded contact structure
Definitions
- the invention relates to a switch lock according to the preamble of claim 1.
- a switch lock is known for example from DE-PS 921 878.
- the known design shows a small self-switch in the form of a base with the switching mechanism mounting boards. The boards are held in slots in the base by means of lugs which are provided with cutouts.
- DE-PS 715937 a switch lock for a switching device with two mutually parallel bearing plates for holding switch parts is known. The bearing plates have assembly webs and are connected to each other by an assembly bridge to form a ready-to-assemble unit.
- DE-AS 11 78 501 a switch lock for a switching device has become known, in which the bearing plates used to hold switch lock parts are kept at a distance by offset spacer bolts.
- This key switch is located in the housing recesses and is secured against lateral displacements by housing parts on the side.
- the US-PS 41 23734 shows a similar structure to the aforementioned types.
- the references cited below show further types known in this field: DE-AS 28 31 135, CH-PS 409079, GB-PS 926 792.
- the invention has for its object to make a switch lock of the type mentioned easier to assemble and thus simplify the manufacture of switching devices. This object is achieved by the characterizing features of claim 1.
- the configuration of the switch lock according to the invention results in the possibility of automatic assembly, in that the switch lock manufactured as a ready-to-assemble unit can be easily installed in a switchgear housing.
- This installation can be done automatically, for example, by inserting the key switch with the mounting bars projecting at right angles into prepared, adapted housing recesses and fastening it to parts fixed to the housing by means of mounting brackets, for example screws.
- the switch lock is thus fastened via three fastening points in the housing, namely once over the two web ends, which are inserted into adapted housing openings, and secondly via the fastening means on the assembly bridge. These three attachment points lie approximately in the same attachment level.
- the two bearing plates which are arranged in the manner of protruding flags and which accommodate all the switch parts between them, extend at right angles to this mounting plane.
- the fasteners of the switch lock are arranged at a single end, the flag-like protruding bearing plates can be fully used for receiving the switch lock parts without the need for fasteners for the switch lock.
- a switch lock installed in this way in an electrical switching device is integrated in a pole track.
- the present invention is preferably applied to electrical circuit breakers.
- the carrier parts of the switch lock and the levers of the switching mechanism are designed as flat parts and, in addition, simple bolts and tension springs are used for the switch lock, there is the possibility of automatic production for the switch lock, since these parts can be easily stored in a magazine.
- the key switch proper net is advantageous for automatic assembly, since the shift lock introduced into the housing openings for the assembly webs only needs to be fixed at one point, specifically in the area of the assembly bridge, by means of a screw or the like.
- the bearing plates form fixed pivot bearings for a drive lever and a ratchet lever, the drive lever being connected via at least one tension spring to the hinge pin of a toggle lever, one lever arm of which is articulated on the ratchet lever and the other lever arm for actuating a movable contact piece of the Switching device is formed.
- the bearing plates, the mounting bracket, the drive lever, the ratchet lever and the toggle lever are designed as flat parts. This has the advantage that these parts, the z. B. can be produced by punching, are stackable in a simple manner and without a large amount of space and can be stored and are thus suitable for automatic production of the key switch. This is not possible, for example, or is not practically possible if the switch lock parts are provided with bends, offsets, passages or the like.
- the bearing plates are connected to the assembly bridge by plugging them together.
- the assembly bridge has openings for the latching engagement of approaches of the bearing plates and is provided with holes for receiving screws for fastening in a switchgear housing.
- the basic structure of the frame for the switch lock is thus achieved by simply plugging the two bearing plates together with the transverse mounting bridge.
- This connection can be detachable or, for. B. by riveting, be firm.
- FIG. 5 shows a top view of the switching device according to FIGS. 1 to 4.
- FIG. 5 shows a detail. 7a, b, c show three views of the key switch.
- FIGS. 1 to 4 show a circuit breaker 10 with a plastic housing 11.
- the circuit breaker has three pole tracks, of which only one can be seen in FIGS. 1 to 4.
- the housing 11 has three connection terminals 12, 13 for the supply and discharge lines on the end faces.
- the connection terminals 12 are connected to a fixed contact piece 14 and the connection terminals 13 via a trigger unit 15 and a flexible line 16 to a movable contact piece 17. 18 with a stack of several individual quenching plates 19 is designated.
- a switching lock is used to actuate the movable contact piece 17.
- the switching mechanism 20 has two bearing plates 21, 22 made of flat stamped parts and running parallel to one another, of which only the rear 21 can be seen in FIG. 1 bi3 4.
- Both bearing plates 21, 22 each have a chamfered assembly at the end web 23, 24 and are releasably connected to each other by a mounting bridge 25.
- the bearing plates 21, 22 each have a recess 26 with bulges 26a, b, c described below.
- a drive lever is mounted via a bearing pin 27, which is designed as a double lever and consists of two flat stamped parts 28, 29 arranged at a distance from one another.
- the stamped parts 28, 29 form a two-armed rotary lever with a long lever arm 28a, 29a and a short lever arm 28b, 29b.
- a handle 30 is provided at the end of the long lever arm 28a, 29a.
- the parts 28, 29 are connected by the bolts 27 and 47, 48 (see below).
- the lock 20 finally has a toggle lever 33 with a lifting arm 34 and a lever arm 35, which are connected by a hinge pin
- the lever arms 34, 35 are each designed as double lever arms 34a, b and 35a, b.
- the one double-armed lever arm 34a, b is articulated in the angular region of the angle lever 32 via a hinge pin 32a.
- the double-armed lever arm 35a, b is articulated on a selector shaft 37, which in turn carries the movable contact pieces 17.
- Two tension springs 38 are seated between the hinge pin 36 and the upper drive lever.
- FIG. 1 shows the switch in the switched-on state, ie with closed contacts 14, 17.
- the switching lock 20 is latched, ie the latch lever 32 lies with a nose 32b on a half-shaft 39, which are rotated in the event of an overcurrent, for example by bimetals 40 can.
- the bearing pin 36 of the toggle lever lies in a bulge 26a of the recess 26.
- FIG. 2 shows a position in which the switch 10 has been switched off by hand, the trigger 15 not has responded, ie the latching between the ratchet lever 32 and the half shaft 39 has not been released.
- the hinge pin 36 is now located on another bulge 26b of the recess 26.
- the handle 30 has the exhibition shown. According to FIG.
- the contacts 14, 17 were opened by responding to the trigger 15, by releasing the latch between the latch lever 32 and the half-shaft 39 by bending the bimetallic elements 10.
- the hinge pin 36 of the toggle lever 33 now lies in a bulge 26c of the recess 26.
- the handle 30 indicates a central position.
- the tension springs 38 each skip the dead center position.
- FIG. 6 shows another embodiment, according to which a projection 51 of this switching shaft now serves as an extension of the switching shaft 37.
- the mounting bridge 25 has at least one bore 44 for receiving a fastening screw 45.
- the switching lock composed of the individual parts forms a ready-to-assemble structural unit which is inserted into the prepared housing receptacles 46 by hand or automatically with the mounting webs and is then fixed by means of screws 45 via the mounting bridge 25.
- the housing 11 can be designed in such a way that the parts of the bearing plates protruding like a flag are secured against lateral displacements by projecting housing parts.
- the switch lock 20 itself is composed such that the bearing plates 21, 22 are connected to each other by the attached bridge 25. If necessary, the bridge 25 can be firmly connected to the bearing plates 21, 22 by riveting the parts 43.
- the pawl lever 32 is seated above its bearing pin 31 via offset ends in the bearing plates 21, 22.
- the bearing plates are held at a certain desired distance by the settling of the bearing pin.
- the stepped ends of the bearing bolt passing through the bearing plates can be riveted as required.
- the two parts 28, 29 of the drive lever are also connected to one another by a stepped bearing pin 27 which holds the parts 28, 29 at a fixed mutual distance.
- the stepped ends of the bearing pin 27 penetrate both the parts 28, 29 and the bearing plates 21, 22 at the provided bearing openings.
- the ends of the bearing pin 27 can be flanged or riveted if necessary.
- the parts of the bearings that protrude like a flag can also end at the end a special spacer bolt can be provided, which can also be flanged at the end if necessary.
- the springs 38 engage on the one hand on the hinge pin 36 and on the other hand on a spring pin 48 which is simply inserted into semicircular recesses on the outside of the drive lever 28, 29.
- Spring pin 48 and hinge pin 36 can be constructed identically.
- the suspended springs 38 give the system consisting of the drive lever 28, 29, the toggle lever 33 and the ratchet lever 32 great stability.
- the spring pin 48 is constricted for the engagement of the springs 38 and the holder in the semicircular recesses.
- With 47 is a driving pin, which can also be designed as a stepped spacer. It serves for mechanical action on the latch lever 32 in the area of the hinge pin 32a for reclosing after a trip.
- the drive lever 28, 29 is moved to the right for relocking, the driving pin 47 takes the latch lever 32 with it until its nose 32b latches again at point 39. Then, by moving the drive lever 28, 29 to the left, the movable contacts 17 are switched on. This takes place in that the toggle lever 33 exceeds its dead center position and causes a sudden switch-on.
- the drive lever 28, 29 is designed such that the bearing pin 31 forms a limitation for the movement of the lever 28, 29 both in the on position according to FIG. 1 and in the off position, see the outer grooves 52 and the spore-shaped lugs 49.
- the hinge pin 36 of the toggle lever 33 can be guided in the recess 26 as in the exemplary embodiment according to FIG. 1. Under certain circumstances, however, this can lead to undesirable friction losses come. Such guidance of the pivot pin 36 in the recess 26 is not required for the lock to function.
- the throat 50 of the drive lever 28, 29 can also serve as a stop for the bolt 36 in the on position.
- a stop on the parts 26b, 26c for the hinge pin 36 in the off position or in the out-load position is not absolutely necessary for the function. In these positions, namely, the movable contact lever 17 rests on the fixed bearing pin 27. This also limits the maximum movement of the hinge pin 36, which is connected to the movable contact 17 via the lever 35.
- the function of the driving pin 47 can also be achieved by the attached handle 30, in that it is provided on the inside with a corresponding approach for acting on the latch lever 32.
- the handle 30 can also be provided on the inside with corresponding grooves for placement on the parts 28, 29. This particularly simple way of mounting the handle 30 also stabilizes the double lever consisting of the two parts 28, 29.
- FIG. 9 and 10 show two associated assembly steps for the production of this connection, each in partial sections and in an enlarged view according to FIG. 8. Otherwise, FIG. 8 essentially corresponds to FIG. 1. Only the bearing plates 21 in this exemplary embodiment have openings that are open at the top Recesses that also have no pronounced bulges as in Fig. 1.
- the free end of the lever arm 35 has an open elongated hole 53 which is undercut. With the elongated hole 53, the lever arm 35 is pushed onto a coupling bolt 54 of the selector shaft 37. With 55 a leaf spring is designated, which presses the lever arm 35 against the coupling bolt 54 in the fully assembled state and thus causes a non-positive connection between the control shaft 37 on the one hand and the lever arm 35 or switch lock 20 on the other.
- the coupling pin 54 is firmly seated on the movable contact piece 17 and serves to also mount this movable contact piece 17 in a simple manner in an elongated hole 56 of the selector shaft 37.
Landscapes
- Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
Claims
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843425996 DE3425996A1 (de) | 1984-07-14 | 1984-07-14 | Schaltschloss fuer ein schaltgeraet |
| DE3425996 | 1984-07-14 | ||
| DE3439243 | 1984-10-26 | ||
| DE19843439243 DE3439243A1 (de) | 1984-10-26 | 1984-10-26 | Schaltschloss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0188482A1 true EP0188482A1 (de) | 1986-07-30 |
| EP0188482B1 EP0188482B1 (de) | 1989-03-15 |
Family
ID=25822950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP85903288A Expired EP0188482B1 (de) | 1984-07-14 | 1985-07-12 | Schaltschloss |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4825183A (de) |
| EP (1) | EP0188482B1 (de) |
| DE (1) | DE3568906D1 (de) |
| WO (1) | WO1986000751A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4576152A1 (de) | 2023-12-22 | 2025-06-25 | Weg Drives and Controls Automação Ltda. | Schutzschalter und verfahren zur montage eines betätigungsmechanismus auf einer aus einem schutzschalter geformten basis |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4913503A (en) * | 1988-10-07 | 1990-04-03 | General Electric Company | Molded case circuit breaker actuator-accessory unit reset mechanism |
| US5021819A (en) * | 1990-08-06 | 1991-06-04 | General Electric Company | Circuit breaker with positive over-center acceleration |
| DE19637678A1 (de) * | 1996-09-05 | 1998-03-12 | Siemens Ag | Niederspannungs-Leistungsschalter mit einer Antriebsvorrichtung |
| DE19919420A1 (de) * | 1999-04-28 | 2000-11-02 | Siemens Ag | Schutzschalteinrichtung, beispielsweise Leitungsschutzschalter |
| DE69935592T2 (de) * | 1999-10-26 | 2007-12-13 | Bticino S.P.A. | Betätigungsmechanismus eines beweglichen Kontaktes für elektrischer Schutzschalter |
| US8542083B2 (en) * | 2011-09-23 | 2013-09-24 | Eaton Corporation | Collapsible mechanism for circuit breakers |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE715937C (de) * | 1939-06-08 | 1942-01-09 | Stotz Kontakt Gmbh | Kleinselbstschalter |
| US2416170A (en) * | 1942-09-15 | 1947-02-18 | Westinghouse Electric Corp | Circuit breaker |
| DE910346C (de) * | 1949-04-08 | 1954-04-29 | Dictaphone Corp | Tonaufzeichnungstraeger und Verfahren zu seiner Herstellung |
| DE921878C (de) * | 1952-11-01 | 1954-12-30 | Siemens Ag | Kleinselbstschalter in Sockelform |
| US2956135A (en) * | 1957-01-18 | 1960-10-11 | Clark Controller Co | Hand operated switch |
| US2908782A (en) * | 1957-04-04 | 1959-10-13 | Gen Electric | Circuit breaker |
| GB910346A (en) * | 1961-05-24 | 1962-11-14 | Licentia Gmbh | Improvements relating to electric switch devices |
| US3194922A (en) * | 1961-08-08 | 1965-07-13 | Westinghouse Electric Corp | Circuit interrupter with improved compact arrangement of parts |
| US3193922A (en) * | 1962-06-13 | 1965-07-13 | Pitney Bowes Inc | Carton opening and handling device |
| BE631916A (de) * | 1962-08-10 | |||
| DE1465274B1 (de) * | 1964-04-07 | 1971-04-15 | Bbc Brown Boveri & Cie | Schaltschloss fuer sprungschaltung mit schaltwippe |
| US4219713A (en) * | 1976-12-30 | 1980-08-26 | Westinghouse Electric Corp. | Circuit breaker with high speed trip latch |
| DE2810233C2 (de) * | 1978-03-07 | 1979-10-18 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Verklinkungsanordnung für elektrische Leistungsschalter |
| DE2831135B1 (de) * | 1978-07-13 | 1979-11-15 | Siemens Ag | Niederspannungs-Schutzschalter mit einem Isolierstoffgehaeuse |
-
1985
- 1985-07-12 DE DE8585903288T patent/DE3568906D1/de not_active Expired
- 1985-07-12 US US06/849,453 patent/US4825183A/en not_active Expired - Fee Related
- 1985-07-12 EP EP85903288A patent/EP0188482B1/de not_active Expired
- 1985-07-12 WO PCT/EP1985/000343 patent/WO1986000751A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO8600751A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4576152A1 (de) | 2023-12-22 | 2025-06-25 | Weg Drives and Controls Automação Ltda. | Schutzschalter und verfahren zur montage eines betätigungsmechanismus auf einer aus einem schutzschalter geformten basis |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0188482B1 (de) | 1989-03-15 |
| US4825183A (en) | 1989-04-25 |
| WO1986000751A1 (fr) | 1986-01-30 |
| DE3568906D1 (en) | 1989-04-20 |
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