CN101136292B

CN101136292B - Switching device

Info

Publication number: CN101136292B
Application number: CN2007101376888A
Authority: CN
Inventors: 托马斯·里格尔; 温弗里德·菲尔林
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 2006-08-01
Filing date: 2007-07-31
Publication date: 2012-05-23
Anticipated expiration: 2027-07-31
Also published as: DE102006036191A1; EP1884975A1; EP1884975B1; CN101136292A

Abstract

The invention relates to a switch device having at least two switching points with respective fixed and movable contacts, and a switching mechanism for controlling movement sequences of the movable contacts. The switch mechanism is used to control the moving course of the removable contact. Such switch device is provided with less various assemblies and a region division saving the space. The device is in the circuit protection switch for example. Therefore, the switch mechanism has a coupling unit (1) that is provided for inducing switching condition change of one point based on the switching condition change of the other point and ensures the space-saving arrangement through the accentric arrangement inside the switch device when reducing various assemblies.

Description

Switching device

Technical field

The present invention relates to a kind of switching device.

Background technology

Usually, this switching device is the member of the member of switchgear or protection switch equipment, particularly line switching or line protection switch, and under work or fault condition, is used to realize being switched on or switched off of one or more current circuits.According to application and application target, in such equipment, except can switching one or more phase conductors, also can switch zero line.Load in current circuit herein; Power consumption equipment for example; Should only be switched in the current circuit of affiliated phase conductor down down in work or failure condition at load, and correspondingly almost zero load (just in) than the little electric current of the detection electric current of corresponding switchgear be switched in the current circuit of zero line.

A kind of modular protective switch corresponding to the described switching device of beginning is disclosed in EP 0 912 985.This modular protective switch includes two switching points; These two switching points functionally connect by means of connector by this way; Promptly switch any switch element when (this switch element comprises a switching point) when protectiveness, another switch element is also correspondingly switched.Based on symmetrical reason, connector is arranged on the center of modular protective switch.A plurality of members of switch element are miniaturized, and vertically are provided with about fixed guide, can installed module formula protection switch on this fixed guide.

Summary of the invention

The objective of the invention is to, propose a kind of switching device, the component count of its different assemblies is fewer and can save the space of enclosure interior.

Realize that through a kind of switching device promptly switching device has according to the object of the invention thus: first and second switching points, switching point have fixing contact and contact movably respectively; Switching mechanism is used to control the movably moving process of contact, wherein; Switching mechanism has connector; Connector is set is used for changing the on off state variation that causes second switch point, wherein, connector is set prejudicially in switching device inside according to the on off state of first switching point.

The present invention is based on following understanding, promptly up to now because a plurality of switch elements of a plurality of switching points must be symmetrical set as much as possible, so particularly when being integrated into two switching points in the switchgear, can produce very high miniaturization complexity.Especially when switch element is provided with perpendicular to fixed guide, only realize a connector in (just in the position at the center basically of entire equipment) between two switch elements.This further means, for example, can only on the side of switchgear, form the mechanism relation of switchgear and fault current switch or auxiliary switch, and this side is limited to this fault or auxiliary current switch place.

According to the present invention, switching device has first and second switching points, and these switching points comprise contact fixing and that move respectively.These switching points a plurality of switch elements in switching device of for example attaching troops to a unit, these switch elements be consistent basically or structure identical.The switching mechanism of device is used to control the moving processes of movable contact.Switching mechanism has connector, and when first switching point carried out the on off state variation, this connector caused the on off state of second switch point to change.On off state in this relation changes might mean that for example pressure is broken off, and discharges through heat or magnetic to cause this pressure disconnection.At this, connector is arranged on switching device inside prejudicially and for example is designed to shift fork.Because the Coupling point that in broad zone, can at random select can be provided, so the off-centre setting of connector is favourable.This means, promptly the Best Coupling point can be set for different supplementary equipment therefore.For example, can utilize so-called moving part to realize this active position.For this reason, moving part mechanically is connected with connector and allows to be mechanically connected to for example fault current or auxiliary switch.

In advantageous embodiments, the on off state of second switch point changes the on off state that also impels first switching point and changes.This will cause the direct connection of two switching points, thereby the pressure disconnection that automatically causes other switching points is broken off in the pressure of a switching point.

In advantageous embodiments, connector is used for mechanically connecting two of the switching device identical switch elements of structure basically.Through the corresponding moulding of connector, can arrive the necessary active position of each switch element or apply this power on the one hand, overcome the space length of the active position of two switch elements on the other hand through connector with the mode of the best.Simultaneously connector is used for location guide effect chain or channel through off-centre, thereby can realize that simple signal receives and with on switching device that is communicated to other in the signal or the switchgear.

In an advantageous embodiments, be provided with dividing plate, the identical switch element of structure basically that this dividing plate is used for partly separating switching device at least is set.

Advantageously propose, a side of dividing plate is used for a switch element, and perhaps the opposite side of dividing plate is used for another switch element, and reason is can save additional part through the function of dividing plate therefrom.The connector that passes dividing plate protrusion is placed in this dividing plate or is installed to the outside of dividing plate, and then with release signal side directed to opposite side from dividing plate.Even more advantageously, promptly switch element vertically is arranged on apparatus casing inside about fixed guide in this relation, and this can help reducing component count at least in part.

In advantageous embodiments, connector constitutes integratedly.Incorporate execution mode shows a cost rational solution, and this solution can be transmitted all signals that needs between two switch elements, and this switch element can be phase place side (Phasenseit).

Connector advantageously has molded curve or cam disc geometry, changes or reduce the moving processes of (schaltschlossbedingt) under multiple power that exists (for example pressing elastic force (Kontaktdruckfederkraft)) and the closure condition thus with optimized as far as possible application of force circuit and moving processes through simple method.

When connector many parts constituted, additional advantage was, for example can also adopt the additional function of moving part.In addition, can a large amount of signals be transmitted to other switch element from a switch element through manifold execution mode.At this, when connector has first motion arm and second motion arm, be favourable.

In another advantageous embodiments, a plurality of motion arms are attached troops to a unit respectively in a plurality of switch elements, and can be provided with mobile or static mutually relative to one another according to the space of switch element.

In advantageous embodiments, switch in order to guarantee optimized protectiveness, first or the second switch point be arranged in the traffic load current paths, and other switching point is separately positioned in the path of current reflux.Can consider that switching point also is applied to the combination of different load currents and control and load current.

In advantageous embodiments, wherein connector need not be mechanically connected on the equipment of adjacency, can remove moving part.In existing moving part, be arranged in to optimization moving part spool on bearing can when there is fault in moving part, be replaced through corresponding guiding piece at support unit, dividing plate or apparatus casing.

Description of drawings

Next, the present invention and will specify according to the embodiment shown in the accompanying drawing according to the favourable design of the characteristic of other claims, but the present invention is not limited thereto; Wherein show:

Fig. 1 and 2: the perspective view of connector,

Fig. 3 and 4: the perspective view of pawl,

Fig. 5 and 6: the perspective view of release lever,

Fig. 7: the right switch element of switching device in connection status,

Fig. 8: the left-handed opening unit of switching device in connection status,

Fig. 9: the right switch element of switching device in off-state, and

Figure 10: the left-handed opening unit of switching device in off-state.

Embodiment

Fig. 1 and Fig. 2 show the connector 1 that one constitutes, and this connector is designed to shift fork in this embodiment, and has two motion arms 1.7,1.8, and wherein motion arm 1.7,1.8 meets different citation forms.First motion arm 1.8 (first fundamental form) of connector 1 is arranged in second motion arm 1.7 (second fundamental form) with being similar to hinge.First motion arm 1.8 has axle journal 1.9 for guiding in dividing plate 6.In addition, connector 1 has connector axle 1.6 and one group of zone of action 1.1,1.2,1.3,1.5, and these zones are in order to interact or signal transmission and have other parts of switching mechanism.

Through incorporate, asymmetric execution mode as the connector 1 of shift fork; The identical dividing plate 6 that is used for fixing assembly also can be used for

switch element

10 and 20, and acts on the corresponding assembly (for

example pawl

14,24 and release lever 15,25) of two

switch elements

10,20 by means of connector 1 simultaneously.The different shape of two motion arms 1.7,1.8 and the different zones of action 1.1,1.2,1.3,1.5 have appearred being used for respectively in the setting (dividing plate is as minute surface) based on the non-mirror image of same components.

In advantageous embodiments, moving part 2 (Mitnehmer) mechanically is connected with at least one motion arm 1.7,1.8 (for example first motion arm 1.8).At this, because stretching out and then can affact on other equipment and/or from other equipment from housing, moving part 2 receives signal, so on off state can be complementary with other equipment.

Fig. 3 and Fig. 4 show so-called pawl 14, and it realizes discharging the function of request.In order to interact, the zone of action 14.3 is provided with release lever 15.This zone of action is designed to projection and also can has the molded shape that is similar to breach or barb, and pawl 14 can mesh in the zone of action 15.4 of release lever 15 thus.In addition, pawl 14 has first rotating shaft 14.5 and second rotating shaft 14.6.In addition, pawl 14 has the zone of action 14.1,14.2 and 14.3.

Fig. 5 and Fig. 6 show release lever 15, and this release lever can and have the zone of action 15.1,15.2,15.4,15.5 around rotating shaft 15.3 rotations.Release lever 15 plays central role in the switching mechanism inside of switching device.Release lever 15 is set is used to receive the release signal of heat or magnetic release or the release signal that discharges through other each phase place sides or second switch unit 20.In case release lever 15 obtains release signals, be separated through the zone of action 15.4 and the zone of action 14.3 as the pawl 14 of supporting or engaging piece, this release lever continues to send to pawl 14 with this signal through the zone of action 15.4.

Equally, release lever 15 can be rotated mobile by means of the zone of action 15.5, can provide electromagnetism just to be rotated mobile through unshowned armature for this reason.

Fig. 7 and Fig. 9 show the switch element 10 in closure state and the off-state respectively.Two

switch elements

10,20 might for example be the phase place sides of switchgear, and this switchgear can be installed on shape for hat or the fixed guide.

Selection about label is noted that the assembly of first switch element 10 and element are with label 10 to 17 expressions, and label 20 to 27 is represented the corresponding identical assembly and the parts of switch elements 20.Therefore for example, to have constituted the zone of action 15.2 of the release lever 15 of switch element 10 with the zone of action 25.2 identical modes of the release lever 25 of switch element 20.

The center element of switch element 10 is expressed as release lever 15.To the zone of action 15.4 of this design release lever 15 holding the corresponding zone of action 14.3 of pawl 14, or as the supporting of the zone of action 14.3.If release signal is transferred on the release lever 15, thereby in Fig. 7, this release lever moves widdershins and leaves from pawl 14.Bearing-surface 14.3 is removed from the zone of action, thereby receives the pawl 14 of bias voltage to realize simultaneously rotating widdershins.The rotation of pawl 14 causes through spring 12.1 (in Fig. 7, being in the position that receives bias voltage).In case pawl 14 (as shown in Figure 9) has moved about 90 ° angle, contact carrier 16 is mobile like this based on the power transmission through bending thing 13.2, and opened with fixing contact in 11.2 minutes the contact 11.1 of promptly moving.Spring 12.1 forms when being biased in before the disconnection process master cock bar 3, and this switch lever can move pawl 14 or through bending thing 13.2 contact carrier 16 moved through bending thing 7, and switch lever uses this contact carrier to be used for biasing spring 12.1.In addition, for biasing spring 12.1, pawl 14 also moves towards the axis perpendicular to figure.

Can guarantee mechanical release signal at this armature through the electromagnetic mechanism (not shown), this release signal moves release lever 15, and this electromagnetic mechanism will be through close switch point and and then through contact 11.1 and 11.2 monitoring currents.

In addition, release signal can be transferred to when heat discharges on the release lever 15.To this, be provided with bimetal 17, this bimetal moves bending thing 13.1 when hot and power transmission through bending thing 13.1 affacts on the underarm of release lever 15 meeting, thus this release lever moves widdershins.

Can consider equally, promptly can discharge release lever 15 through (dividing plate) back mounted switch element 20.For transmission signals, be provided with the connector 1 that is designed to shift fork, wherein first motion arm 1.8 is attached troops to a unit in switch element 10, and second motion arm 1.7 is attached troops to a unit in second switch unit 20.The part of motion arm 1.8 rotates the power that moves the pawl 24 that has caused second switch unit 20 is transferred to release lever 15 through the zone of action 1.1 of motion arm 1.8 the zone of action 15.1.Similarly, for example when electromagnetism discharges with heat, release lever 15 is with counterclockwise mobile cause forcing break contact 11.1 and 11.2.

Motion arm 1.8 has request function.The zone of action 1.2 is arranged on the nose type projection of this motion arm, and the zone of action 14.2 of this zone of action and pawl 14 interacts.At this, signal is transferred on motion arm 1.8 or the connector 1 from pawl 14.Through moving counterclockwise of pawl 14; Profile based on the zone of action 14.2; Revolving force changes into the power effect of straight line basically; And be delivered on second motion arm 1.7 through first motion arm 1.8 simultaneously, this second motion arm is delivered to this signal again switch element 20 and begins this second motion arm is discharged.

In switching device, this switching device has the plural in other words phase potential electrode of plural switch element especially, when connector 1 many parts ground constitutes, can impel by this way equally and force to break off a plurality of contacts.

Moving part 2 directly effectively is connected in connector 1, can continue to be transmitted to another equipment through mechanical signal thereby force to break off, for example on the Z type parts.The switch transition of the auxiliary switch that the release of therefore, force breaking off causes adding.Be contemplated that in addition; The additional fault current suppressor when having fault current like this influence be designed to the switching mechanism or the switching point of the switching device of line protection switch, short time ground auto-closing phase potential electrode and neutral electrode more than once promptly even when actuating switching device.

In addition, can add other defencive function (forcing to break off when the voltage of confirming) for the defencive function of switching device through additional operating current release.Thus, for example force the phase potential electrode and the neutral electrode (perhaps being called null electrode) of cut-off switch device.With method similarly, also can add low voltage release, perhaps this low voltage release mechanically is connected with the switching device of switching device or line switching, thereby can when being lower than specific voltage, realize cutting off function through switching device.

Fig. 8 and 10 shows the second switch unit 20 in the on off state of closed and disconnected respectively, and wherein switch element 20 effectively is connected with switch element 10 foundation through connector 1.

The assembly and the element 22 to 27 that correspondingly are suitable at present second switch unit 20 for the embodiment of the assembly of switch element 10 and element 12 to 17.

Use these actual conditions owing to a large amount of identical member of two

switch elements

10,20 and according to dividing plate 6 as substrate, cannot switch

element

10,20 be set mirror image symmetrically.The result is, second motion arm 1.7 is different fully with first motion arm 1.8 and be preferably designed as hook rather than bar type.Second motion arm 1.7 is installed on first motion arm 1.8, thereby avoids second motion arm 1.7 to be directly connected in moving part 2.Because moving part 2 is divided rotating shafts through first motion arm 1.8, therefore the direct connection of second motion arm 1.7 causes when release-push unit 20 the lever signal is transferred on first motion arm 1.8.

Pawl 24 only is rotated counterclockwise when discharging the pressure disconnection, and this pawl has caused that through its zone of action 24.2 second motion arm 1.7 and its zone of action 1.3 move down.In other words, the position of second motion arm 1.7 request pawls 24, and when discharging, release signal is transferred to the release lever 15 of first switch element 10 through first motion arm 1.8.When first motion arm 1.8 is discharging, moving through pawl 14, also with similar method through switch element 10 release-push unit 20, release signal is transferred on second motion arm 1.7 like this, discharges rotation thereby release lever 25 is also the same with release lever 15.

Should explain, because bending thing 7 stretches out through dividing plate 6 and can affact simultaneously on two

pawls

14,24, so can be through the pawl 24 of switch lever 3 operation second switch unit 20.

Except release signal through connector 1 transmission and common bending thing 13.2,23.2 transmission of power through two

pawls

14,24, use through dividing plate 6 or around this diaphragm rings around other channel.Can consider that also pawl 24 directly is connected with switch lever 3 through the bending thing, thereby independent signal flow passes through connector 1 circulation at switch element 10, between 20.In this article, axle journal 1.9 is expressed as the element of non-transmission signals, and this axle journal guides in slotted eye 8 and confirms moving of motion arm 1.8 fatefully jointly.

Generally speaking, the present invention relates to a kind of switching device, have: at least two switching points, these switching points have fixing and contact movably respectively; Switching mechanism is used to control the movably moving process of contact.This switching device can be realized reducing various assemblies, and has realized saving the area dividing in space simultaneously, and this device for example is present in the line protection switch.To this; A kind of switching device has been proposed; This switching device has the switching mechanism that has connector; This switching mechanism is set is used for changing the on off state variation that causes a switching point according to the on off state of each other switching point, and the layout of when reducing various element, guaranteeing to save the space through the inner eccentric layout of switching device.

Claims

1. switching device, said switching device has: first and second switching points, said switching point have fixing contact (11.2,21.2) and movably contact (11.1,21.1) respectively; Switching mechanism; Said switching mechanism is used to control the moving process of said movably contact (11.1,21.1); Wherein, said switching mechanism has connector (1), said connector is set is used for changing the on off state variation that causes said second switch point according to the on off state of said first switching point; It is characterized in that, said connector (1) is set prejudicially in said switching device inside.

2. switching device according to claim 1 wherein, is provided with said connector (1) and is used for changing the on off state variation that causes said first switching point according to the on off state of said second switch point.

3. switching device according to claim 1 and 2 is provided with said connector (1) and is used for two of the said switching device of mechanical connection unanimity or the identical switch elements (10,20) of structure basically.

4. switching device according to claim 1; Wherein, Unanimity basically or the identical switch element (10,20) of structure that dividing plate (6) is used for separating at least in part said switching device are set; Wherein said connector (1) is through said dividing plate (6) protrusion, and is arranged in the said dividing plate or is installed in the outside of said dividing plate (6).

5. switching device according to claim 3; Wherein, Unanimity basically or the identical switch element (10,20) of structure that dividing plate (6) is used for separating at least in part said switching device are set; Wherein said connector (1) is through said dividing plate (6) protrusion, and is arranged in the said dividing plate or is installed in the outside of said dividing plate (6).

6. switching device according to claim 1, wherein, said connector (1) integratedly or many parts ground constitute.

7. switching device according to claim 5, wherein, said connector (1) integratedly or many parts ground constitute.

8. switching device according to claim 1, wherein, said connector (1) has first motion arm (1.8) and second motion arm (1.7), and said first motion arm and said second motion arm can be static against each other or mobile.

9. switching device according to claim 7, wherein, said connector (1) has first motion arm (1.8) and second motion arm (1.7), and said first motion arm and said second motion arm can be static against each other or mobile.

10. switching device according to claim 1 wherein, by means of moving part (2), is provided with another switching device that said connector (1) is used to be mechanically connected to said switching device outside.

11. switching device according to claim 9 wherein, by means of moving part (2), is provided with another switching device that said connector (1) is used to be mechanically connected to said switching device outside.

12. switching device according to claim 1, wherein, said connector (1) is designed to shift fork.

13. switching device according to claim 11, wherein, said connector (1) is designed to shift fork.

14. switching device according to claim 1, wherein, said at least first switching point is arranged in the path of first load current.

15. switching device according to claim 13, wherein, said at least first switching point is arranged in the path of first load current.

16. switching device according to claim 14, wherein, said second switch point is arranged in the path of another load current, in the path of Control current or in the current return circuit of said first load current.

17. switching device according to claim 15, wherein, said second switch point is arranged in the path of another load current, in the path of Control current or in the current return circuit of said first load current.

18. a switchgear, said switchgear have according to the described switching device of claim 1 to 17.

19. switchgear according to claim 18, wherein, said switchgear is designed to protection switch equipment.

20. switchgear according to claim 18, wherein, said switchgear is designed to line protection switch.

21. according to each described switchgear in the claim 18 to 20, wherein, the switchgear that said switchgear and another one at least are used to adjust on off state mechanically is connected.