CN1241291A - Switching device with under-voltage auxiliary release - Google Patents
Switching device with under-voltage auxiliary release Download PDFInfo
- Publication number
- CN1241291A CN1241291A CN98801492.0A CN98801492A CN1241291A CN 1241291 A CN1241291 A CN 1241291A CN 98801492 A CN98801492 A CN 98801492A CN 1241291 A CN1241291 A CN 1241291A
- Authority
- CN
- China
- Prior art keywords
- bar
- controls
- switch
- switching device
- spring
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/12—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by voltage falling below a predetermined value, e.g. for no-volt protection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
-
- 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
- H01H71/46—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main 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
- H01H71/56—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel
Abstract
The invention relates to a switching device with under-voltage auxiliary switch, characterized in that it enables combining low activating force with a simple structural design. This is achieved by close coupling between the activating element (1) and the latching mechanism of the switching device, by which the entire travel of the activating element (1) is transferred to the latching mechanism. The activating element (1) has a cam (17), via which the under-voltage auxiliary switch is released.
Description
The present invention relates to a kind of belt switch lock and be used to disconnect switching device with closed main contacts, it has a leading low pressure auxiliary switch and a controls, this controls is used for driving switch lock and is used for the auxiliary release of closed low, and this under-voltage auxiliary release is implementing to connect the make position that the Cheng Qian moves to a pawl bar that belongs to switch lock it in advance by switch lock.
This type of switching device is for a long time by the enterprise marketing of electronics industry.The low pressure auxiliary switch is connected on the original switching device, even so that voltage interruption or brownout also general protection motor or equipment take place when using power switch.The low pressure auxiliary switch is an electromagnet in principle, and it overcomes one and disconnects spring force work.This disconnection spring pretension when having voltage, and can make the switch lock breech lock of switching device by a claw.When voltage interruption, disconnect spring and throw off the breech lock of switch lock and switching device open circuit by means of claw with the spring energy that is stored in wherein.High-speed double electromagnet is passed through in the connection that is used for the electric current of pretension disconnection spring, that is to say by means of leading low pressure auxiliary switch and realizes.In this case, between the closure and the connection process of switching device of auxiliary switch contact, harmonious in time problem has been proposed by the script of switch lock.In voltage interruption and when switching device is in off-state, the breech lock of switch lock is in disengaged condition.Therefore in the connection process, at first must make the closing of contact of low pressure auxiliary switch, thus travelling backwards switch claw and the intermediate bar of switch lock can be latched on the pawl bar fully.This means that before the real connection process of switching device enforcement was in on-position, intermediate bar can only be stuck on the closed pawl bar.
Needed for this reason low pressure auxiliary switch leading, so far by controls for example the idle stroke of rocking bar or handle drives device realize.The controls of switching device just acts on the close mechanism of low pressure auxiliary switch in the first of its movement travel in this case.Only this closing of contact and thereby breech locked when being guaranteed, the engagement protrusion in switch lock mechanism just is engaged and switch lock mechanism is connected and is in on-state.
Disclose a kind of electric switch in DE 19526591A1, it has a primary current path and to have the secondary current path of separation.Not only can handle the switch lock of electric switch but also can handle main contacts and auxiliary contact by a switch lever.Effect has one to disconnect a spring and an extension spring in switch lock, and their spring force is so optimized, the spring force that disconnects spring can be selected a little less than because it obtains the support of extension spring under the situation of break contacts closure.When break contacts disconnect, disconnect spring and need only overcome the frictional force at break contacts place and also will overcome smaller main contacts power.
Can recognize the power switch that a kind of belt switch is locked by DE 9206137U1, wherein, the position that disconnects spring can be changed according to the position of the switch.Therefore accomplish, under the big situation of the arm of force, produce big torque at open position, and on the switch shaft at switch lock under the little situation of the arm of force, act on a less torque at on-position.
The objective of the invention is to create the switching device of the described type of a kind of preface, wherein, the course of work of under-voltage auxiliary release and the breech lock of back to back switch lock simply mode are realized.
The object of the present invention is achieved like this, promptly, switch lock has one and comprise a leverage that is latched in the intermediate bar on the pawl bar with controls couples together in work, and first and second spring forces that act on the intermediate bar are arranged, the summation that acts on two spring forces on the intermediate bar at first of controls therebetween with manipulation stage of leading low pressure auxiliary switch closure, intermediate bar is retained on the backstop, and, in second manipulation stage following intermediate bar is removed the position latching that makes it to be on the pawl bar from backstop.
In addition advantageously, switch lock has control lever that one and joystick couple together, one and acts on curved bar and intermediate bar that is arranged between curved bar and the ratchet that the extension spring on this control lever, a power transmission by extension spring can change its position in work, at open position, this intermediate bar is retained on by a counterbalance spring and is in such position on the backstop, make it in the connection process after pawl bar moves to its make position, remove and move on to position latching on pawl bar by switch lock mechanism from backstop.This means a kind of unknown so far additional function of counterbalance spring, counterbalance spring only is used for reducing the engaging force of intermediate bar on pawl bar usually in similar switch lock.Lever ratio should be chosen as under situation of the present invention, not only reduces engaging force but also can reach the leading of low pressure auxiliary switch by means of this counterbalance spring.
Favourable design of the present invention is, forms a fixed connection between controls and the switch lock, and therefore when handling for the connection process, the total movement stroke of controls is passed to switch lock.In addition, She Ji advantage is like this, and the power transmission chain needn't be disconnected the mechanism that also can cancel required for this reason complexity by idle stroke.
In order to drive, use one handle as controls by favourable mode.
Another kind of favourable form of implementation is, low pressure auxiliary switch closure behind first corner of controls α, and intermediate bar places on the position latching on the pawl bar of present closure when second bigger corner β.Guarantee needed leading in this way.
If counterbalance spring is designed to torsionspring, then thereby can reduce the demand in space and reach desired spring rate.
Another favourable design of the present invention is that controls is provided with the slip ring profile, and it rotates a steering lever when handling, and this steering lever is thrown off the closure of low pressure auxiliary switch.This means between the auxiliary contact of controls and low pressure auxiliary switch it is a kind of simple and economical especially effective connected mode.
Further specify embodiments of the invention by means of accompanying drawing below, in the accompanying drawing:
Fig. 1 is the three-dimensional view that the switchgear of the present invention that is in open position has the switch lock of rotary drive mechanism;
Fig. 2 is the perspective view that has the switch lock of low pressure auxiliary switch relieving mechanism shown in Figure 1;
Fig. 3, Fig. 4 are respectively the fundamental diagram of the switch lock that is latched in open position and on-position.
The switch lock that Fig. 1 represents to have the switching device of swingle drive unit is in open position, and its design has one handle 1 as controls.The building block of this switch lock mainly comprises pawl bar 5, extension spring 7 and two fish plates 8,9 of control lever 2, curved bar 3, intermediate bar 4, band breech lock projection 6.The drive rod 11 of handle 1 by tooth section 10 and tooth engagement with it and control lever 2 directly that is no-idle running ground on working, couple together.Extension spring 7 is suspended on rotatably mounted the control lever 2 by the one end, is suspended on the pin joint 12 with fish plate 8 and 9 with its other end.In addition, fish plate 8 rotatably is fixed on the curved bar 3, and curved bar 3 is bearing on the intermediate bar 4.The power effect that intermediate bar 4 is subjected to be designed to the counterbalance spring 13 of torsionspring herein is pulled to retaining and leans against on the backstop that not have among this figure to represent.The spring force of counterbalance spring 13 should be designed to, and has torque 15 or 16 intermediate bars 4 still can keep retaining to lean against (see figure 3) on the backstop 14 although introduce.
Fig. 2 represents the relieving mechanism of low pressure auxiliary switch in conjunction with switch lock.The tooth section 10 that is connected with handle 1 has slip ring profile 17 at its downside.It rotates steering lever 18 when control crank 1, makes contact 19 closures of leading low pressure auxiliary switch by steering lever.The sliding component 21 that disconnects spring 20 and be connected on the disconnection spring belongs to the low pressure auxiliary switch, and sliding component 21 acts on the switch claw 22 of switching device.Switch claw 22 couples together for the breech lock of cancel switch lock with release axle 23 shown in Figure 1.
Fig. 3 represents that switch lock mechanism is in conjunction with the action principle of low pressure auxiliary switch at open position.On curved bar 3, applied a little torque 15 with the fish plate 8 that is connected at pin joint 12 places with it by extension spring 7 based on the short arm of force 25.Therefore the torque 16 that acts on the intermediate bar 4 is also less, thereby intermediate bar is leaned against on the backstop 14 under the spring force effect of counterbalance spring 13.Meanwhile the contact 19 of low pressure auxiliary switch is in open position, in this position, under the adiaphorous situation of the electromagnet of low pressure auxiliary switch, disconnects spring 20 pawl bar 5 is remained on its disengaged position.
When connecting, control lever 2 passes through rotary handle 1 to connection direction Ein motion (see figure 4), and closes at not shown switching device main contacts in the case.Meanwhile, the slip ring profile on tooth section 10 17 is handled leading low pressure auxiliary switch.Behind first about 30 ° corner α, the contact 19 of low pressure auxiliary switch (seeing Fig. 1,2) closure is so disconnection spring 20 tensioning under existing voltage in the low pressure auxiliary switch.Therefore travelling backwards of switch claw 22, pawl bar 5 also moves to its make position, at this position intermediate bar 4 by locking.Because the counter-pressure 24 of switching device contact compression spring and because the arm of force that extension spring 7 has reduced makes pin joint 12 be rotated down simultaneously.At this moment, the arm of force 25 that acts on the curved bar 3 increases, so torque 15,16 increases with corner.When second about 45 ° of corner β, torque 16 is greater than the torque 26 that is acted on intermediate bar 4 by counterbalance spring 13.Intermediate bar 4 by on the breech lock projection 6 that is placed on pawl bar 5 and be bearing in the there.Switch enters on-position when handle 1 is further rotated.
Because just stop when closure and intermediate bar 4 are at 45 ° in the time of 30 ° the contact 19 of low pressure auxiliary switch, so because this outer corner difference leaves time enough, so that make pawl bar 5 closed or under low pressure keep disconnecting under existing voltage.Because low pressure makes under the situation that pawl bar 5 still throws off, forward, that is just give curved bar 3 with freedom, and switching device carries out the transition to release condition from the intermediate bar 4 of backstop 14 turn-ofves.
Guarantee that in this way intermediate bar 4 does not move before low pressure auxiliary switch closure.That is to say that switching device breech lock again when rated voltage in this case is because intermediate bar 4 is breech lock projection 6 other having slipped over.
Though the embodiment with reference to expression has in the accompanying drawings illustrated the present invention, but should consider that doing like this is not intentionally the present invention to be only limited to represented form of implementation, and should comprise all possible variation, modification and equivalent structure, as long as they are covered by the content of claims.
Claims (7)
1. one kind has switch lock and is used to disconnect switching device with closed main contacts, it has a leading low pressure auxiliary switch and a controls (1), this controls is used for the driving switch lock and is used for the closed low auxiliary switch, the low pressure auxiliary switch is implementing to connect the Cheng Qian by switch lock, in advance a pawl bar (5) that belongs to switch lock is moved to its make position, it is characterized in that: this switch lock has one and comprise a leverage (3 that is latched in the intermediate bar (4) on the pawl bar with controls (1) couples together in work, 4,8,9), and first spring force (7) and second spring force (13) that acts on the intermediate bar (4) arranged, act on two spring forces (7 on the intermediate bar (4), 13) summation at first of controls therebetween with manipulation stage of leading low pressure auxiliary switch closure, intermediate bar is retained on the backstop (14), and, in second manipulation stage following intermediate bar (4) is removed the position latching that makes it to be on the pawl bar (5) from backstop (14).
2. according to the described switching device of claim 1, it is characterized in that: described switch lock has a control lever (2) that couples together with controls (1) in work, a spring (7) that acts on the control lever, power transmission by spring (7) can change the curved bar (3) of its position, and intermediate bar (4) that is arranged between curved bar (3) and the pawl bar (5), at open position, this intermediate bar is retained on by counterbalance spring (13) and is in such position on the backstop (14), promptly, it after pawl bar (5) moves to its make position, removes and moves on to position latching on pawl bar (5) by switch lock mechanism from backstop in the connection process.
3. according to claim 1 or 2 described switching devices, it is characterized in that: form a fixed connection between described controls (1) and the switch lock, therefore when handling for the connection process, the total movement stroke of controls (1) is passed to switch lock.
4. according to the described switching device of above-mentioned each claim, it is characterized in that: in order to drive with handle (1) as controls.
5. according to the described switching device of above-mentioned each claim, it is characterized in that: low pressure auxiliary switch closure behind first corner of controls (1) α, intermediate bar (4) is placed at the position latching on the pawl bar (5) when second bigger corner β.
6. according to the described switching device of above-mentioned each claim, it is characterized in that: described counterbalance spring is designed to torsionspring (130.
7. according to the described switching device of above-mentioned each claim, it is characterized in that: described controls (1) is provided with slip ring profile (17), and it rotates a steering lever (18) when handling, and this steering lever is thrown off the closure of low pressure auxiliary switch then.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1997103973 DE19703973C1 (en) | 1997-02-03 | 1997-02-03 | Switching device with under-voltage auxiliary trip e.g. for circuit breaker |
| DE19703973.1 | 1997-02-03 | ||
| PCT/DE1998/000201 WO1998034260A1 (en) | 1997-02-03 | 1998-01-22 | Switching device with under-voltage auxiliary release |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1241291A true CN1241291A (en) | 2000-01-12 |
| CN1163934C CN1163934C (en) | 2004-08-25 |
Family
ID=7819151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB988014920A Expired - Lifetime CN1163934C (en) | 1997-02-03 | 1998-01-22 | Switching device with under-voltage auxiliary release |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0956579B1 (en) |
| JP (1) | JP3935508B2 (en) |
| CN (1) | CN1163934C (en) |
| DE (1) | DE19703973C1 (en) |
| WO (1) | WO1998034260A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887826A (en) * | 2009-05-13 | 2010-11-17 | 西门子公司 | The auxiliary tripping unit that is used for circuit breaker |
| CN101894695B (en) * | 2009-05-22 | 2012-10-17 | 苏州万龙电气集团股份有限公司 | Bevel gear double-rocker floating rod switching device |
| CN107665796A (en) * | 2016-07-28 | 2018-02-06 | 浙江正泰电器股份有限公司 | The link gear of breaker and its auxiliary contact |
| CN107818891A (en) * | 2016-09-13 | 2018-03-20 | 西门子公司 | Switchgear with the device of reliable display switch position in contact melted |
| CN111133546A (en) * | 2017-09-22 | 2020-05-08 | 利萨·德雷克塞迈尔有限责任公司 | Electrical switch |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19754072C1 (en) * | 1997-12-05 | 1999-07-22 | Siemens Ag | Switchgear unit consisting of a switchgear and a coupled leading auxiliary switch |
| IT1316658B1 (en) * | 2000-02-23 | 2003-04-24 | Ge Power Controls Italia Spa | ROTATING ACTIVATOR FOR SWITCHES ABLE TO ACTIVATE THEIR MINIMUM VOLTAGE RELEASE IN ADVANCE |
| KR100516943B1 (en) * | 2003-12-26 | 2005-09-23 | 엘에스산전 주식회사 | Structure of breaking apparatus for trip error protection of motor protected breaker and method of operating thereof |
| DE102012201854A1 (en) * | 2012-02-08 | 2013-08-08 | Siemens Aktiengesellschaft | Emergency release for an electrical switching device and electrical switching device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4743876A (en) * | 1987-07-24 | 1988-05-10 | Westinghouse Electric Corp. | Circuit interrupter with undervoltage trip mechanism |
| DE9206139U1 (en) * | 1992-05-07 | 1992-07-02 | Siemens Ag, 8000 Muenchen, De | |
| DE9206137U1 (en) * | 1992-05-07 | 1993-09-09 | Siemens Ag | Circuit breaker with a switch lock |
| DE4310863C1 (en) * | 1993-04-02 | 1994-05-26 | Kloeckner Moeller Gmbh | Auxiliary switching device for electric switch appts. - uses two-armed lever for closure of auxiliary switch contacts and release of armature for undervoltage release |
| DE19526591B4 (en) * | 1995-07-21 | 2005-04-21 | Abb Patent Gmbh | Electric switch |
-
1997
- 1997-02-03 DE DE1997103973 patent/DE19703973C1/en not_active Expired - Lifetime
-
1998
- 1998-01-22 JP JP53243798A patent/JP3935508B2/en not_active Expired - Fee Related
- 1998-01-22 CN CNB988014920A patent/CN1163934C/en not_active Expired - Lifetime
- 1998-01-22 EP EP98906834A patent/EP0956579B1/en not_active Expired - Lifetime
- 1998-01-22 WO PCT/DE1998/000201 patent/WO1998034260A1/en active IP Right Grant
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887826A (en) * | 2009-05-13 | 2010-11-17 | 西门子公司 | The auxiliary tripping unit that is used for circuit breaker |
| US8526153B2 (en) | 2009-05-13 | 2013-09-03 | Siemens Aktiengesellschaft | Auxiliary tripping unit for a circuit breaker |
| CN101887826B (en) * | 2009-05-13 | 2014-05-28 | 西门子公司 | Auxiliary tripping unit for a circuit breaker |
| CN101894695B (en) * | 2009-05-22 | 2012-10-17 | 苏州万龙电气集团股份有限公司 | Bevel gear double-rocker floating rod switching device |
| CN107665796A (en) * | 2016-07-28 | 2018-02-06 | 浙江正泰电器股份有限公司 | The link gear of breaker and its auxiliary contact |
| CN107665796B (en) * | 2016-07-28 | 2019-12-06 | 浙江正泰电器股份有限公司 | Linkage mechanism of circuit breaker and auxiliary contact thereof |
| CN107818891A (en) * | 2016-09-13 | 2018-03-20 | 西门子公司 | Switchgear with the device of reliable display switch position in contact melted |
| CN107818891B (en) * | 2016-09-13 | 2020-03-06 | 西门子公司 | Switching device with means for reliably indicating the position of a switch during contact welding |
| CN111133546A (en) * | 2017-09-22 | 2020-05-08 | 利萨·德雷克塞迈尔有限责任公司 | Electrical switch |
| CN111133546B (en) * | 2017-09-22 | 2022-04-08 | 利萨·德雷克塞迈尔有限责任公司 | Electrical switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1163934C (en) | 2004-08-25 |
| DE19703973C1 (en) | 1998-05-20 |
| JP3935508B2 (en) | 2007-06-27 |
| EP0956579B1 (en) | 2002-04-10 |
| WO1998034260A1 (en) | 1998-08-06 |
| JP2001509943A (en) | 2001-07-24 |
| EP0956579A1 (en) | 1999-11-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20040825 |