CN102214530A - Switch, particularly power switch - Google Patents
Switch, particularly power switch Download PDFInfo
- Publication number
- CN102214530A CN102214530A CN2011100819298A CN201110081929A CN102214530A CN 102214530 A CN102214530 A CN 102214530A CN 2011100819298 A CN2011100819298 A CN 2011100819298A CN 201110081929 A CN201110081929 A CN 201110081929A CN 102214530 A CN102214530 A CN 102214530A
- Authority
- CN
- China
- Prior art keywords
- contact arm
- contact
- switch
- rotor
- housing
- 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
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
- H01H1/2041—Rotating bridge
- H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
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- Breakers (AREA)
Abstract
The invention relates to a switch, especially a power switch, which comprises a housing, a rotor rotatably supported in the housing and a contact arm rotatably supported in the rotor. The contact arm can be deflected between an on position and an off position. The free end of the contact arm is equipped with contact members moving along the movement of the contact arm. The contact arm rests on the opposed contact members when the switch is closed and the contact arm is turned on. When a) the current flowing through the contact members exceeds a predetermined value and b) the rotor is rotating, the contact arm is deflected and the abutted contact members are separated from each other. The contact arm is driven to be at the off position by the rotor. In order to ensure the function of the switch, at least one side of the contact arm is equipped with a locking element. The locking element is embedded in the recess of the housing before reaching the off position, so that the contact arm is prevented from rotating back to the on position.
Description
Technical field
The present invention relates to a kind of by claim 1 switch as described in the preamble, especially power switch.
Background technology
Power switch is well-known and is used for interruptive current under short-circuit conditions.For this reason, described power switch has contact arm, and this contact arm can deflection between on-position and open position.This contact arm is carrying contact on its end, this contact leans against on the opposed contact when switch closure.The electric current that remains to be interrupted flows to the binding post of load-side respectively via two contacts and contact arm from the binding post of grid side by switch.Under the situation of short circuit, the described contact arm of magnetic force deflection that the short circuit current that passes through to be occurred produces, wherein said two contacts are separated from each other.Described contact arm can be rotated to support in the rotor; The rotation of rotor causes the deflection of contact arm and separating of contact equally.
In multipole switch, the contact arm of each phase is arranged in corresponding utmost point box, and the rotor of the utmost point box that is arranged side by side mutually can not be bonded into switch shaft with the relative rotation, and wherein said switch shaft extends transverse to utmost point box.The rotation of switch shaft deflects into its open position in other words in its on-position with all contact arms according to direction of rotation simultaneously.Described switch shaft is by the pre-tensioning of spring and be engaged in the on-position.When short circuit occurring, the contact arm of attaching troops to a unit deflects in its open position by magnetic force and at first interrupts the electric current of this phase.Unclamp the electric current that engagement and switch shaft interrupt all the other phases subsequently.
The shortcoming here is that the contact arm that the phase of short circuit current occurs bounces back in its on-position the damage that this can cause the damage of switch itself even also can cause the load of back afterwards sometimes again in deflecting upward into open position.
Summary of the invention
Task of the present invention is to guarantee the defencive function of switch.
This task is resolved by the feature of claim 1; Dependent claims is favourable design.
Described solution proposes, and arranges blocking element at least on the side on the contact arm, and this blocking element embeds when arriving open position in the recess of housing the latest, thereby stops described contact arm to go back in the on-position.Just be positioned at described blocking element in the housing to a certain extent and prevent that by this way contact arm from falling in the logical position of tieback.
More effective is to arrange blocking element respectively in the both sides of contact arm.
Simple technically execution mode proposes, and described blocking element is configured to spring element, especially is configured to leaf spring.
The execution mode of less wear proposes, with the spring element tensioning remain in the rotor, when contact arm deflection this spring element leave rotor and before it moves in the housing recess before arriving open position on the housing ledge in especially contact pin form along slip.
Advantageously, described spring element when connecting switch with rotor acting in conjunction ground tensioning and state in tensioning under with the jointly past swivel motion of rotor.
Description of drawings
Describe the present invention according to embodiment below.Accompanying drawing illustrates:
Fig. 1 is the utmost point box with switch of half shell that takes off,
Fig. 2 is the switch arm that is configured to double-arm lever by Fig. 1,
Fig. 3 is the section of seeing from above by the utmost point box of Fig. 1,
Fig. 4 be rotor by the switch of Fig. 1 together with contact arm, and
Fig. 5 be when getting lower half shell by the utmost point box of Fig. 1 together with rotor and contact arm.
Embodiment
Fig. 1 shows the utmost point box 1 of multipole power switch, and power switch is called switch below.Described utmost point box 1 has formed housing 1a and has been made up of two and half shells 2, has taken off in two and half shells in Fig. 1.Described utmost point box 1 has two binding posts 3, has arranged fixing contact 4 on the inner end respectively being positioned at of described binding post.Against the contact 5 of attaching troops to a unit, the described contact of attaching troops to a unit 5 is arranged on the free end of contact arm 6 on described contact 4, and described contact arm is configured to double-arm lever at this.In addition, swivel bearing the rotor 7 of switch shaft part form in described utmost point box 1, but is supporting to deflection contact arm 6 again in this rotor.Two rotations overlap at this.Described contact arm 6 can deflection between on-position and open position; Be in its on-position at contact arm described in Fig. 16, in this on-position, connect described switch.When connecting switch, electric current flows to the binding post 2 of load-side by two contacts 4,5, contact arm 6 and two other contacts 5,4 from the binding post 3 of grid side.When opening switch, especially under short-circuit conditions, between contact 4,5, produced electric arc, this electric arc extinguishes fast by means of arc extinguishing board, and described arc extinguishing board inserts in the socket 8.
Fig. 2 shows the contact arm 6 of the blocking element 10 with spring element 10a form, and described blocking element is fixed on the both sides of contact arm 6.Described spring element 10a is particularly related to leaf spring at this.
Can only find out contact arm 6 and rotor 7 with two spring element 10a in Fig. 3, wherein spring element 10a(is by rotor 7) remain on to tensioning rotor 7 inside, method is the contact seamed edge 11 maintenance compressions of the end of described spring element by rotor 7.
Fig. 4 shows rotor 7 in half shell 2 of the utmost point box 1 of packing into together with contact arm 6.Especially can in Fig. 4, well find out contact seamed edge 11, described contact seamed edge-about having inclined-plane 12 in Fig. 4-superincumbent zone.Fig. 3 and 4 shows the switch that is under the on-state, and shows the contact arm 6 that is in the on-position thus, is resisted against on the fixing contact 4 that does not illustrate here at the contact 5 of contact arm described in this on-position.
Under short-circuit conditions, the electric current that flows through contact 4,5 correspondingly surpasses threshold value given in advance in a short period of time, this is relevant with the huge magnetic repulsive force on affacting contact arm 6, and described repulsive force causes contact arm 6 to upward deflect under the situation at contact 4,5 separately at rotor 7 fixedly the time.Subsequently, contact arm 6 is in its open position.
Figure 5 illustrates the pole shoe of cutting open 1 with the contact arm 6 that is arranged in open position.People see that the end that can see of described spring element 10a is arranged in housing recess 13 in Fig. 5.This housing recess 13 is formed by the housing ledge 14 and the inner surface 15 of contact pin 14a form.When short circuit causes deflection contact arm 6, when described spring element is reaching open position, move in the housing recess 13 and (at least slightly) unloading before, described spring element 10a outside fixing rotor 7 moves on the seamed edge 16 and outside this on seamed edge 16 along slip.Stop described contact arm 6 to go back to thus or its on-position that rebounds in.
If described rotor 7 moves along clockwise direction, this rotor takes contact arm 6 in its open position together so, or rather, realizes by means of rest element 17, and described contact arm 6 leans against on this rest element.
On the contrary, when rotor 7 in the counterclockwise direction, described contact arm 6 is forwarded in its on-position.At this, contact arm 6 is held by rotor 7 once more, and the end of wherein said spring element 10a is compressed by inclined-plane 12 and moved in the socket of rotor 7.
In multipole switch, described rotor 7 is bonded into switch shaft.The deflection of the contact arm 6 that is caused by short circuit has activated the triggering part, and this triggering part triggers all remaining contact arms 6 subsequently and upward deflects, and has wherein unclamped the engagement of switch shaft.
In order to connect switch, along past revolution counterclockwise, wherein each rotor 7 holds spring element 10a by means of inclined-plane 12 respectively and moves in the on-position with contact arm 6 with switch shaft.Engagement goes back to next switch shaft once more subsequently.
Claims (5)
1. switch, especially power switch,
Have housing (1a), rotatably mounted rotor (7) in this housing,
Has the contact arm (6) that is bearing in rotatably in the described rotor (7), this contact arm can and have the contact (5) that moves with described contact arm (6) in deflection between on-position and the open position on its free end, this contact (5) leans against when described contact arm (6) is in its on-position when switch closure on the contact (4) of opposed fixed and arranged
Wherein, when the electric current that a) flows through described contact (4,5) surpasses value and the b that provides in advance) when described rotor (7) rotates, (6) deflection of described contact arm and mutually against contact (4,5) be separated from each other, wherein, described rotor takes described contact arm (6) in its open position together
It is characterized in that,
Arrange blocking element (10) at least one side on the described contact arm (6), this blocking element embeds in the housing recess (13) when arriving open position the latest.
2. press the described switch of claim 1,
It is characterized in that,
Arrange blocking element (10) respectively in the both sides of described contact arm (6).
3. press claim 1 or 2 described switches,
It is characterized in that,
Described blocking element (10) is configured to spring element (10a), especially is configured to leaf spring.
4. press the described switch of claim 3,
It is characterized in that,
Remain in the described rotor (7) to described spring element (10a) tensioning, this spring element leaves described rotor (7) and moves in the described housing recess (13) last along slip at the housing ledge (14) of especially contact pin (14a) form before the arrival open position before the unloading at it when described contact arm (6) deflection.
5. press claim 3 or 4 described switches,
It is characterized in that,
Described spring element (10a) and described rotor (7) acting in conjunction ground tensioning and when connecting described switch with the jointly past swivel motion of described rotor (7).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010014428.2 | 2010-04-01 | ||
| DE201010014428 DE102010014428A1 (en) | 2010-04-01 | 2010-04-01 | Multipole electrical switching device comprises two switching poles, a drive mechanism and a switching shaft, which is capable of rotating under the effect of the drive mechanism about an axis of rotation formed by pivot bearings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102214530A true CN102214530A (en) | 2011-10-12 |
| CN102214530B CN102214530B (en) | 2015-11-25 |
Family
ID=44650148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110081929.8A Expired - Fee Related CN102214530B (en) | 2010-04-01 | 2011-04-01 | Switch, especially power switch |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102214530B (en) |
| DE (1) | DE102010014428A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594258A (en) * | 2012-08-15 | 2014-02-19 | 西门子公司 | Switch device |
| CN105359246A (en) * | 2013-09-25 | 2016-02-24 | 西门子公司 | Switching device having an apparatus for switching on suddenly |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011077883A1 (en) * | 2011-06-21 | 2012-12-27 | Siemens Aktiengesellschaft | Electric power switch has electrical contact bridge that is permanently held in OFF position for short periods after pivoting contact bridge from ON position to OFF position |
| DE102014224798A1 (en) | 2014-12-03 | 2016-06-09 | Siemens Aktiengesellschaft | Contact unit and electromechanical switching device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060152308A1 (en) * | 2005-01-07 | 2006-07-13 | General Electric Company | Split rotor system and method with springs |
| CN101339868A (en) * | 2008-08-11 | 2009-01-07 | 上海永继电气有限公司 | Contact system of circuit breaker |
| CN101395689A (en) * | 2006-03-02 | 2009-03-25 | 默勒有限公司 | Switching shaft unit for an electrical contact system |
| CN101556870A (en) * | 2008-03-06 | 2009-10-14 | K&N开关发展有限公司 | Switching mechanism |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19630470C1 (en) * | 1996-07-27 | 1997-08-28 | Kloeckner Moeller Gmbh | Current-limiting circuit-breaker switch with two lugs on centrally pivoted lever |
| US6084489A (en) * | 1998-09-08 | 2000-07-04 | General Electric Company | Circuit breaker rotary contact assembly locking system |
| DE20313872U1 (en) * | 2003-09-06 | 2005-01-05 | Moeller Gmbh | Contact arrangement for current-limiting circuit breakers |
| DE102008039066A1 (en) * | 2008-08-21 | 2010-02-25 | Siemens Aktiengesellschaft | Circuit-breaker for interrupting current flow, has press element arranged at bridging element for pressing surface of bridging element against component or housing in deflecting position, where housing comprises two contacts |
-
2010
- 2010-04-01 DE DE201010014428 patent/DE102010014428A1/en not_active Withdrawn
-
2011
- 2011-04-01 CN CN201110081929.8A patent/CN102214530B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060152308A1 (en) * | 2005-01-07 | 2006-07-13 | General Electric Company | Split rotor system and method with springs |
| CN101395689A (en) * | 2006-03-02 | 2009-03-25 | 默勒有限公司 | Switching shaft unit for an electrical contact system |
| CN101556870A (en) * | 2008-03-06 | 2009-10-14 | K&N开关发展有限公司 | Switching mechanism |
| CN101339868A (en) * | 2008-08-11 | 2009-01-07 | 上海永继电气有限公司 | Contact system of circuit breaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594258A (en) * | 2012-08-15 | 2014-02-19 | 西门子公司 | Switch device |
| CN105359246A (en) * | 2013-09-25 | 2016-02-24 | 西门子公司 | Switching device having an apparatus for switching on suddenly |
| US9734960B2 (en) | 2013-09-25 | 2017-08-15 | Siemens Aktiengesellschaft | Switching device having an apparatus for switching on suddenly |
| CN105359246B (en) * | 2013-09-25 | 2018-01-02 | 西门子公司 | Switchgear with the device for connecting stepwise |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010014428A1 (en) | 2011-10-06 |
| CN102214530B (en) | 2015-11-25 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20170401 |