EP4152358A1 - Disjoncteur - Google Patents
Disjoncteur Download PDFInfo
- Publication number
- EP4152358A1 EP4152358A1 EP22194309.5A EP22194309A EP4152358A1 EP 4152358 A1 EP4152358 A1 EP 4152358A1 EP 22194309 A EP22194309 A EP 22194309A EP 4152358 A1 EP4152358 A1 EP 4152358A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit breaker
- self
- supporting mechanism
- assembly
- breaker according
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000926 separation method Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
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
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
- H01H69/01—Apparatus or processes for the manufacture of emergency protective devices for calibrating or setting of devices to function under predetermined conditions
-
- 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
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H2009/0292—Transparent window or opening, e.g. for allowing visual inspection of contact position or contact condition
-
- 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
-
- 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
- H01H71/7436—Adjusting the position (or prestrain) of the bimetal
Definitions
- the present invention relates to a circuit breaker.
- the invention relates to a magnetothermal circuit breaker with a self-supporting mechanism with pre-calibration of the thermal assembly and of the magnetic assembly.
- Magnetothermal electrical circuit breakers use mechanisms that allow to open and close the movable contact both by means of the actuation of an external handle that can be accessed by the user and by means of the automatic tripping of the protection devices provided inside.
- US6750743B1 discloses an integrated thermal and magnetic circuit breaker that includes a cassette associated with each pole in a multi-pole electrical distribution circuit.
- Each cassette has a housing, a pair of electrical contacts disposed in the housing, and a thermal and magnetic trip unit supported by the housing.
- the housing has a first compartment having the electrical contacts disposed therein and a second compartment having a portion of the thermal and magnetic trip unit.
- a wall separates the first and second compartments for isolating the second compartment from gasses generated by separation of the first and second contacts.
- a duct adjacent to the second compartment allows the gasses to pass to an exterior portion of the housing.
- the housing has a pair of opposing slots for receiving edges of a load terminal.
- a lever has a first end disposed proximate an end of a bimetallic element and a second end disposed proximate an armature in the magnetic assembly of the trip unit. The lever is rotated by one of the bimetallic element and the armature to unlatch an operating mechanism.
- GB2286486A discloses a circuit breaker that comprises first and second breaker contacts disposed in a main current path extending between a line terminal and a load terminal.
- An electromagnetic release device forcibly disengages the second contact from the first contact upon detection of an excess current flowing through the main current path.
- the release device comprises a coil inserted in the main current path and a plunger magnetically connected to the coil through a yoke which is of a generally U-shaped configuration having a base member and a pair of side members.
- a pair of opposed first and second arc runners guide an arc, which develops between the breaker contacts upon separation thereof, in a direction away from the breaker contacts.
- the first arc runner is electrically connected to the first contact and extends away therefrom to give an extension, while the second arc runner is defined by the base member of the yoke.
- the yoke is electrically connected to the second contact at the side member adjacent to the second contact.
- the arc runners are confined within a space between opposed side walls of the circuit breaker housing, the width of the space increasing towards the advancing direction of the arc.
- a further fundamental problem is to improve the performance of circuit breakers while maintaining limited dimensions and in any case within standard regulations.
- the aim of the present invention is to provide an electrical device that can be manufactured more economically with respect to traditional ones and at the same time has an improved performance.
- a particular object of the invention is to provide a modular magnetothermal circuit breaker.
- a further object of the invention is to provide a circuit breaker that can be manufactured with preassembled and pre-calibrated components, by means of automated systems or dedicated production lines.
- a further object of the invention is to provide a circuit breaker that is more reliable in use.
- a further object of the present invention is to provide a structure which, by virtue of its particular constructive characteristics, is capable of giving the greatest assurances of reliability and safety in use.
- the automatic circuit breaker with self-supporting mechanism comprises a magnetothermal circuit breaker which includes essentially a containment body 103, which has the classic standardized shape, and forms, at a face 105, means 20 for coupling to an omega-shaped guide (not shown), according to DIN standards.
- the containment body 103 has a protrusion 109 in which the actuation member or actuation handle 9 is positioned.
- the containment body 103 includes a self-supporting mechanism 1, according to the invention, operatively associated with electrical protection components constituted, for example, by a magnetic assembly, which includes a magnetic relay 17, and by a thermal assembly 2 associated with a Dejon cell 18.
- the magnetic relay 17 is associated with a terminal 177 and includes an adjustment spring which is mounted inside the spool, allowing to define the tripping threshold.
- the magnetic assembly does not require adjustments, since the threshold is defined by means of an adjustment spring mounted inside the spool.
- the self-supporting mechanism 1 includes the thermal assembly 2, welded and provided with a movable contact 3, a copper braid 4, a bimetal 5, a terminal or clamp 6, and a sliding electrode 7.
- the self-supporting mechanism also includes a kinematic assembly 8, to which the movable contact 3 is integrally locked.
- the actuation handle 9 is connected to the kinematic assembly 8 by means of a crossbar 10.
- Two side walls 11 and 12 contain all the components of the self-supporting mechanism.
- the self-supporting mechanism includes a pair of arc guide plates 14 and 19 accommodated in the side walls 11 and 12.
- the self-supporting mechanism includes an adjustment grub 13 for the calibration of the thermal relay.
- the upper part of the side wall 12 has a triangular slot 15 for a visual verification of the position of the bimetal 5 for the mechanical calibration of the self-supporting mechanism.
- the automatic circuit breaker according to the invention is assembled and finished by associating the self-supporting mechanism 1 with a base 16 with the components that include, in the specific case, the magnetic relay 17, the Dejon cell 18, the arc guide plate 19, the DIN hook 20, closed by the lid 21 and with trims 22.
- the final thermal assembly with two loadbearing side walls 11 and 12, allows a better rigidity of the thermal assembly and the possibility of a pre-calibration.
- Figure 1 shows the reduced number of components for the final assembly.
- the invention achieves the intended aim and objects, providing an automatic circuit breaker which has a self-supporting mechanism that allows a reduced number of components for the final assembly.
- the automatic circuit breaker according to the present invention allows a simple and economical production process by means of preassembled and calibrated components, thus reducing production times and facilitating the management of the production departments.
- the self-supporting mechanism according to the present invention which can be calibrated and tested prior to the testing of the full product, ensures optimum quality and an increase in the efficiency of the production process.
- the automation of the assemblies and in particular of the self-supporting mechanism further improves the process.
- the system according to the present invention allows to significantly reduce the number of preassembled components in order to be able to manage the assembly of the product rapidly and stably from the operative point of view and from the point of view of transport.
- the materials used, as well as the dimensions, may be any according to the requirements and the state of the art.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Breakers (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- High-Pressure Fuel Injection Pump Control (AREA)
- Fluid-Driven Valves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102021000023873A IT202100023873A1 (it) | 2021-09-16 | 2021-09-16 | Interruttore automatico |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4152358A1 true EP4152358A1 (fr) | 2023-03-22 |
Family
ID=78771026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22194309.5A Pending EP4152358A1 (fr) | 2021-09-16 | 2022-09-07 | Disjoncteur |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP4152358A1 (fr) |
IT (1) | IT202100023873A1 (fr) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2286486A (en) | 1994-02-10 | 1995-08-16 | Matsushita Electric Works Ltd | Circuit breaker |
US20040036562A1 (en) * | 2002-08-21 | 2004-02-26 | Siebels Randall L. | Latch for an electrical device |
US6750743B1 (en) | 2003-05-13 | 2004-06-15 | General Electric Company | Integrated thermal and magnetic trip unit |
US20140312996A1 (en) * | 2013-04-23 | 2014-10-23 | Eaton Corporation | Bimetal and magnetic armature providing an arc splatter resistant offset therebetween, and circuit breaker including the same |
-
2021
- 2021-09-16 IT IT102021000023873A patent/IT202100023873A1/it unknown
-
2022
- 2022-09-07 EP EP22194309.5A patent/EP4152358A1/fr active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2286486A (en) | 1994-02-10 | 1995-08-16 | Matsushita Electric Works Ltd | Circuit breaker |
US20040036562A1 (en) * | 2002-08-21 | 2004-02-26 | Siebels Randall L. | Latch for an electrical device |
US6750743B1 (en) | 2003-05-13 | 2004-06-15 | General Electric Company | Integrated thermal and magnetic trip unit |
US20140312996A1 (en) * | 2013-04-23 | 2014-10-23 | Eaton Corporation | Bimetal and magnetic armature providing an arc splatter resistant offset therebetween, and circuit breaker including the same |
Also Published As
Publication number | Publication date |
---|---|
IT202100023873A1 (it) | 2023-03-16 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20230531 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230525 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: GEWISS S.P.A. |