EP3002773B1 - Schaltgerät mit einer bedienerunabhängigen Ausschaltvorrichtung - Google Patents
Schaltgerät mit einer bedienerunabhängigen Ausschaltvorrichtung Download PDFInfo
- Publication number
- EP3002773B1 EP3002773B1 EP14187302.6A EP14187302A EP3002773B1 EP 3002773 B1 EP3002773 B1 EP 3002773B1 EP 14187302 A EP14187302 A EP 14187302A EP 3002773 B1 EP3002773 B1 EP 3002773B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive shaft
- switching
- switching device
- toothed rocker
- toothed
- 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.)
- Active
Links
- 230000009849 deactivation Effects 0.000 title 1
- 230000007246 mechanism Effects 0.000 claims description 67
- 230000013011 mating Effects 0.000 claims description 27
- 230000005540 biological transmission Effects 0.000 claims description 21
- 230000008878 coupling Effects 0.000 description 17
- 238000010168 coupling process Methods 0.000 description 17
- 238000005859 coupling reaction Methods 0.000 description 17
- 239000004020 conductor Substances 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000254 damaging effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
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
- H01H73/045—Bridging 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
- H01H71/505—Latching devices between operating and release 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
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/56—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H2001/508—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position with mechanical means to prevent return/reverse movement of movable contact once opening or closing cycle has started
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
- H01H2300/046—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using snap closing mechanisms
Definitions
- the invention relates to a switching device with an actuating mechanism, wherein the manual actuation via an actuating element to a counter-wheel is transferable, with a transmission mechanism in which the movement of the counter-wheel is transferable to a drive shaft which is coupled to a toothed rocker of a switching mechanism, via which an articulated lever acts on a shift lever, and with a contact arrangement having a fixedly positioned contact piece with contacts, which is arranged opposite to a movable contact piece with contacts, which is guided in a contact slide, wherein the shift lever is in operative connection with the contact arrangement.
- a switching device of this kind is made DE 197 03 962 C1 known.
- Switching devices in particular circuit breakers, serve, among other things, the safe switching off in the event of a short circuit and thereby protect consumer installations.
- electrical or mechanical switching units are suitable for the operational manual switching of consumers as well as for the safe disconnection of a system from the mains during maintenance work or when changing the system.
- Electrical switching units are often operated electromagnetically. That is, such switching units are high-quality electrical switching devices with integrated protection for motors, lines, transformers and generators. They are used more closely at workstations with a lower switching frequency. Such switching units are suitable in addition to the short circuit protection for overload protection. In the case of a short circuit, an electrical switching unit switches off an electrical system safely.
- Circuit breakers have two separate release mechanisms for overload and short-circuit protection. Both triggers are connected in series. Short-circuit protection is provided by an electromagnetic release that acts almost instantaneously. In the event of a short circuit, the electromagnetic release unlocks without delay a circuit breaker of the circuit breaker. A switching armature disconnects the contactor before the short-circuit current can reach its maximum value.
- switching units have a contact slide unit with a contact slide and a movable contact piece.
- the movable contact piece also has electrical contacts.
- switching units have first contacts to a power line. In an on state, the electrical contacts of the movable contact piece contact the fixed contacts of the switching unit. In the event of a short circuit, the electrical contacts of the movable contact piece are released from the fixed contacts, so that the flow of current is interrupted. Here, the movable contact is released from the fixed contacts.
- circuit breakers In addition to their protective functions as overload and short-circuit releases, as already mentioned above, circuit breakers also fulfill the normative switching on and off of motors. To prove these functions, the circuit-breakers must be able to switch on ten times the rated motor current according to the product standard. To be able to guarantee this limit load, it is necessary for the circuit breaker to double-break the three current paths in the form of a respective movable bridge with two movable contact points and two fixed contact points, almost simultaneously and in a jumping function closes.
- the object of the present invention is to provide a switching device with a user-independent switch-off.
- this object is achieved by a switching device with an actuating mechanism, wherein the manual actuation via an actuating element is transferable to a mating gear, with a transmission mechanism in which the movement of the mating gear is transferable to a drive shaft which is coupled to a toothed rocker of a switching mechanism via which an articulated lever acts on a shift lever, and with a contact arrangement having a fixedly positioned contact piece with contacts, which is arranged opposite to a movable contact piece with contacts, which is guided in a contact slide, wherein the shift lever is in operative connection with the contact arrangement ,
- the invention is characterized in that the drive shaft engages in a sliding recess of the toothed rocker, wherein the rotation of the drive shaft takes along the toothed rocket only after a certain angle of rotation, after passing through an idling path.
- actuating element and switching mechanism lock Between actuating element and switching mechanism lock a free travel including return spring is integrated.
- the essence of the invention consists in the fact that the free travel in the power transmission chain by two already existing, clutch-like pieces put together parts, the drive shaft and the toothed rocker of the switch latch, is realized.
- Two interlocking circle segments have a free space, which at Rotation only from a certain angle of rotation takes the counterpart on the switch lock. By overcoming the release point of the switch lock, the lock movement mechanism can rotate into this space and is no longer braked by the actuator of the actuating mechanism.
- the actuator is held at the release point, with the switch lock to rotate freely in the switched-off switching position.
- the free travel between drive shaft and toothed rocker of the switching mechanism is run through. This causes an operator-independent minimum contact opening.
- an additional free travel between the mating gear and drive shaft can be introduced. Through this additional free travel, a total of two part freewheels that result in a composite overall freewheel, through which the unobstructed opening distance can be increased.
- the actuator is rotated by a return spring back to the correct switched switching position position.
- the return spring is attached to the drive shaft. It therefore acts only between the two clutch-like co-operating circle segments of drive shaft and toothed rocker of the switching mechanism.
- the entrainment of the mating wheel is formed directly upon actuation of the actuating element, without passage of a free travel.
- the free travel is formed according to the invention between the drive shaft and the toothed rocker of the switching mechanism. This results in a user-independent switch-off, which is not dependent on the speed at which the actuator is rotated.
- a further concept may consist in that the drive shaft engages over a circular segment partial section contour with a projecting extension into the sliding recess of the toothed rocker.
- the drive shaft is coupled through the circular segment partial section contour to the toothed rocker of the switching mechanism.
- the sliding recess is formed in the toothed rocker in the form of a circular segment section with a Leerwe treatede.
- the two interlocking circular segments of circular segment partial section contour and circular segment segment have a free space, which entrains the counterpart on the switch lock only at a certain angle of rotation upon rotation. After the release point of the switching mechanism is overcome, the lock movement mechanism can rotate into this space and is no longer braked by the manually operated operating mechanism.
- a further concept may be that a further recess for receiving a spring element is formed on the circle segment section next to the free-space gap.
- the spring element serves as a return spring and makes it possible to transfer the switching device in the on position.
- the spring element is designed as a wire bow spring.
- This type of spring is characterized by a particular robustness and can be installed to save space through their shape.
- a further concept may consist in that the drive shaft is coupled to the toothed rocker via the spring element. Since the drive shaft is in turn coupled to the mating gear and the mating gear to the actuating element, it is possible, the switching device to return to the switched shift position via the spring element.
- another concept may consist in that the spring element is designed as a return spring.
- the return spring is attached to the drive shaft and projects into the sliding recess of the circular segment section in the toothed rocker.
- This additional free travel comes into play when the unobstructed by the resulting freewheel contact minimum opening width is insufficient.
- the switching device is a circuit breaker.
- the switching device with an operator-independent opening device has an actuating mechanism in which the manual operation via an actuating element to a counter-wheel is transferable.
- the actuating mechanism engages in the transmission mechanism, in which the movement of the counter-wheel is transmitted to a drive shaft which is coupled to a toothed rocker of a switch lock, via which an articulated lever acts on a shift lever.
- the shift lever is operatively connected to a contact assembly having a fixedly positioned contact piece with contacts, which is arranged opposite to a movable contact piece with contacts, which is guided in a contact slide.
- an extension preferably in the form of a circular segment partial section contour, is formed on the drive shaft, which projection projects into a sliding recess, preferably in the form of a circular segment section, engages in the toothed rocker of the switching mechanism.
- the sliding recess in the toothed rocker additionally comprises an idling gap, which must be traversed before reaching the release point.
- a return spring engages in the switching mechanism mechanism.
- the switching device according to the invention is characterized in that the switch-off device is designed operator-independent.
- the free travel is here at the coupling point between the drive shaft and gear and is not influenced by a fast or slow movement of the actuator.
- Fig. 1 shows a portion of a switching device according to the invention in the form of actuation and transmission mechanism in the switched-switching state of the switching device.
- the actuating mechanism can be operated manually via an actuating element 1, which is coupled to a counter-wheel 2.
- the actuating mechanism engages in the transmission mechanism in which the movement of the counter-wheel 2 is transmitted to a drive shaft 3, which is coupled to a geared rocker 4 of a switching mechanism 5, via which an articulation lever 6 acts on a shift lever.
- the surface normal of the counter-wheel 2 is substantially orthogonal to the axis of rotation of the drive shaft 3 or the surface of the counter-wheel 2 is positioned substantially parallel to the axis of rotation of the drive shaft 3.
- an extension preferably in the form of a circular segment part section contour 7, is formed, which engages in a sliding recess, preferably in the form of a circular segment section 8, in the toothed rocker 4 of the switching mechanism 5.
- the sliding recess in the toothed rocker 4 additionally comprises an idling gap 9, which must be traversed before reaching the release point.
- a return spring 10 engages in the switching mechanism lock.
- Fig. 2 is the coupling point between the toothed rocker 4 of the switching mechanism 5 and the drive shaft 3 in the switched-switching state of the switching device shown.
- To the axis center 11 of the toothed rocker 4 is a sliding recess in the form of a circular segment section 8 in the toothed rocker 4 is arranged.
- This gate recess of the toothed rocker 4 additionally comprises an idling gap 9, which can be traversed by the circular segment part section contour 7 of the drive shaft 3.
- an extension 12 is formed which, in the case of a switch-off operation, enlarges the bearing surface on the toothed-rocker limiting contour 13 in order to facilitate the entrainment of the toothed rocker 4.
- Fig. 3 subregions in the form of actuation and transmission mechanism of the switching device according to the invention are shown at the release point.
- Out Fig. 3 shows that the actuator 1 has now taken an intermediate position between the switched on and off circuit position.
- the drive shaft 3 has now turned into the visible range, after it was completely covered by the toothed rocker 4 previously.
- the toothed rocker 4 has in the switch lock 5 their position compared to the switched-switching state not essential changed.
- the circular segment partial section contour 7 has only traversed the path of the Leerwe developede 9.
- Fig. 4 shows the coupling point between the toothed rocker 4 according to the invention of the switching mechanism 5 and the drive shaft 3 at the release point.
- the extension 12 of the circular segment partial section contour 7 abuts against the toothed rocker limiting contour 13 of the toothed rocker 4, without the toothed rocker 4 substantially changing its position.
- the rotational movement is completed by the drive shaft 3, which now appears visibly behind the contour of the toothed rocker 4.
- Fig. 5 shows the coupling between the drive shaft 3 and the toothed rocker 4 at the free-wheeling point.
- the return spring 10 is preferably formed as a wire bow spring, with a U-shaped shape with two legs 14, 15 and a connecting portion 16. In this case, the leg end 17 of the leg 14 is bent and stored in a recess of the drive shaft 3. The leg end 18 of Leg 15 is coupled to the toothed rocker 4.
- Fig. 7 are subregions in the form of actuation and transmission mechanism of a switching device according to the invention shown in the off switching position state.
- the toothed rocker 4 In the switched-off switching position, the toothed rocker 4 has now continued its rotation in the clockwise direction and thereby carried the switching mechanism 5, whereby a movement on the articulated lever 6 is implemented.
- the circular segment partial section contour 7 now bears against a toothed rocker limiting contour 19, which is arranged opposite the toothed rocker limiting contour 13.
- Fig. 8 is the coupling point between the toothed rocker 4 according to the invention of the switching mechanism 5 and the drive shaft 3 in the switched-off switching position state shown.
- the toothed rocker 4 has rotated clockwise by approx. 20 °.
- the extension 12 of the circular segment part section contour 7 of the drive shaft 3 is in this position now on the Zahnwippenbegrenzungskontur 19 at.
- Fig. 9 the coupling between the drive shaft 3 and the toothed rocker 4 is shown in the switched-off switching state.
- Fig. 5 now has the leg end 18 of the leg 15 moves from top to bottom.
- the leg end 17 further supports in a recess of the drive shaft.
- Fig. 10 shows the drive shaft 3 including the return spring 10 in the switched-off switching position state. Compared to Fig. 6 , in which the return spring 10 is shown at the release point, also goes out Fig. 10 show that the leg end 18 has moved from top to bottom.
- Fig. 11 portions of the switching device according to the invention with the actuating mechanism, the transmission mechanism and a contact assembly 20 in the off circuit state.
- the actuating mechanism comprises the actuating element 1 and the counter-wheel 2
- the transmission mechanism is composed of the drive shaft 3, the toothed rocker 4 and the switching mechanism 5, which is coupled to the articulation lever 6, which is in operative connection with a shift lever 21.
- the contact assembly 20 is actuated.
- the contact arrangement 20 has a movable contact piece 22, which is guided in a contact slide 23 and which is arranged opposite to a fixedly positioned contact piece 24. When switched off switching position, the switching pieces 22, 24 are spaced apart.
- Fig. 12 the switched-off switching state is shown in a side view.
- Fig. 13 shows portions of the switching device according to the invention with the actuating mechanism, the transmission mechanism and the contact assembly 20 in the switched-switching position state. In this switching position state, the movable contact pieces 22, 24 to each other.
- Fig. 15 shows a portion of the switching device according to the invention with the actuator 1, the mating gear 2, the drive shaft 3 including the return spring 10. From this illustration, it is apparent that the preferably cylindrically shaped drive shaft 3 merges with the toothed rocker 4 in a circular segment partial section contour 7.
- Fig. 16 the drive shaft 3 is shown with the circular segment partial section contour 7, which merges into the extension 12.
- the drive shaft 3 has an arm extension 25, which allows the turning back to the switched-switching state when the switch-off is canceled before reaching the release point.
- the drive shaft 3 also has a catch prongs 26, which serves as a support surface for a catch surface, which is preferably formed on the mating gear.
- Fig. 17 Below the mating gear 2 in the direction of the drive shaft 3, a mating contour 27 is arranged, which is in operative connection with the arm extension 25 of the drive shaft 3 and allows the turning back of the switching device in the switched position switching state.
- a pin 28 is arranged on the mating gear 2, which engages in a recess of the drive shaft 3 and thus constitutes an operative connection with the drive shaft 3.
- Fig. 17 also shows that the actuator 1, the mating gear 2 takes directly on actuation, without passage of a free path.
- two recesses 29 are formed on the mating gear, in which catch 30 of the actuating element 1 engage.
- Fig. 18 shows the actuating mechanism of actuator 1 and mating gear 2 including the coupling to the drive shaft 3rd Off Fig. 18 the meshing of the mating contour 27 on the mating gear 2 on the arm extension 25 of the drive shaft 3 is apparent.
- Fig. 19 shows the actuating mechanism of actuator 1 and mating gear 2 including the coupling to the drive shaft 3 before reaching the release point when the switch-off is canceled.
- the mating contour 27 on the mating gear 2 is then again spaced from the arm extension 25 on the drive shaft 3.
- the switching device according to the invention is characterized in that the switch-off device is designed operator-independent.
- the free travel is here at the coupling point between the drive shaft and gear and is not influenced by a fast or slow movement of the actuator.
Landscapes
- Mechanisms For Operating Contacts (AREA)
- Gear-Shifting Mechanisms (AREA)
- Mechanical Operated Clutches (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14187302.6A EP3002773B1 (de) | 2014-10-01 | 2014-10-01 | Schaltgerät mit einer bedienerunabhängigen Ausschaltvorrichtung |
CN201510409420.XA CN106206107B (zh) | 2014-10-01 | 2015-07-13 | 具有不依赖于操作者的关断装置的开关设备 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14187302.6A EP3002773B1 (de) | 2014-10-01 | 2014-10-01 | Schaltgerät mit einer bedienerunabhängigen Ausschaltvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3002773A1 EP3002773A1 (de) | 2016-04-06 |
EP3002773B1 true EP3002773B1 (de) | 2017-03-22 |
Family
ID=51687826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14187302.6A Active EP3002773B1 (de) | 2014-10-01 | 2014-10-01 | Schaltgerät mit einer bedienerunabhängigen Ausschaltvorrichtung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3002773B1 (zh) |
CN (1) | CN106206107B (zh) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016217225A1 (de) * | 2016-09-09 | 2018-03-15 | Siemens Aktiengesellschaft | Schaltschloss für ein Niederspannungsschutzgerät |
GB2571365A (en) * | 2018-02-23 | 2019-08-28 | Eaton Intelligent Power Ltd | Electrical Switchgear |
WO2019192697A1 (de) * | 2018-04-05 | 2019-10-10 | Abb Schweiz Ag | Vorrichtung zum betätigen eines unterbrechers |
CN114551182B (zh) * | 2022-04-27 | 2023-02-10 | 深圳市脉联电子有限公司 | 一种离合装置、操作机构及断路器 |
CN114551183B (zh) * | 2022-04-27 | 2023-02-10 | 深圳市脉联电子有限公司 | 一种离合装置、操作机构及断路器 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2671907B1 (fr) * | 1991-01-17 | 1995-05-12 | Telemecanique | Disjoncteur a commande manuelle variable. |
DE19703962C1 (de) * | 1997-02-03 | 1998-06-10 | Siemens Ag | Leistungsschalter zum Schalten elektrischer Stromkreise |
DE10139917A1 (de) * | 2001-08-14 | 2003-02-27 | Abb Patent Gmbh | Schaltschloß für ein elektrisches Schaltgerät, insbesondere für einen Motorschutzschalter |
KR100512917B1 (ko) * | 2003-12-19 | 2005-09-06 | 엘에스산전 주식회사 | 모터보호용 차단기의 핸들구동장치 |
CN103000398B (zh) * | 2011-09-15 | 2015-12-02 | 西门子公司 | 一种操动机构以及切换装置 |
-
2014
- 2014-10-01 EP EP14187302.6A patent/EP3002773B1/de active Active
-
2015
- 2015-07-13 CN CN201510409420.XA patent/CN106206107B/zh active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
CN106206107A (zh) | 2016-12-07 |
EP3002773A1 (de) | 2016-04-06 |
CN106206107B (zh) | 2018-06-01 |
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