CN1846289A - Low-voltage power circuit breaker having radial contact movement by integrating the contact supports in the actuating shaft - Google Patents
Low-voltage power circuit breaker having radial contact movement by integrating the contact supports in the actuating shaft Download PDFInfo
- Publication number
- CN1846289A CN1846289A CNA2004800251108A CN200480025110A CN1846289A CN 1846289 A CN1846289 A CN 1846289A CN A2004800251108 A CNA2004800251108 A CN A2004800251108A CN 200480025110 A CN200480025110 A CN 200480025110A CN 1846289 A CN1846289 A CN 1846289A
- Authority
- CN
- China
- Prior art keywords
- contact
- roll forming
- forming body
- circuit breaker
- contact lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
-
- 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
- H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
- H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
- H01H1/225—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member the supporting member being pivotable
-
- 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
- H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
- H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
- H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars
Landscapes
- Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to a low-voltage power circuit breaker in which the contact levers (4) serving to establish an electrical contact are mounted directly on a roller-shaped actuating shaft (2) provided for actuating the contact levers (4). The contact levers (4) are mounted in recesses (3), and the pressure of the contact levers (4) against the contact surface (9) of a connecting bar (5) is increased by contact force springs (10). The electrical contact between the contact lever (4) and the contact surface (9) is established by rotating the actuating shaft (2).
Description
The present invention relates to a kind of low-voltage circuit breaker, it comprises the roll forming body that can install rotatably around its longitudinal axis in the enclosure, especially a switch shaft.
In hitherto known low-voltage circuit breaker, the pole unit of the contact lever of being made up of a contact supporting that some motions wherein are housed of motion is driven by an independent switch shaft.Here switch shaft is connected with the pole unit of motion by a coupling bar usually.When circuit breaker is opened, guarantee that be main problem in the desired contact pressure of on-state between the pole unit of motion and fixed contact.Because it is numerous to participate in the number of spare parts of connection process usually, cause adding up and must being compensated of each tolerance.Described here these tolerances can cause disadvantageous consequence, so that switch shaft need be had adjustability with the coupling bar that the pole unit of motion is connected.
Owing to this reason, switch shaft is connected with the pole unit of motion by a coupling bar that supports movingly so far usually, that is is connected with the contact supporting with contact lever.Here, contact lever is rotatably installed on the contact supporting, and under on-state, increases the pressure of contact lever on fixed contact by the contact stage clip.The adjustability of contact pressure or by direct adjustment switch shaft, that is by realizing with respect to the mid point of fixed contact moving switch axle, or realize by an adjustable coupling bar.
The curve movement of the switch contact on contact lever based on the geometry of contact supporting and the configuration of contact lever, extends on a very mild round track, and the sliding motion that can be counted as straight line approx.This curve movement by switch contact has been determined the measurement parameter that these are significant, the measurement parameter of the contact system of especially described on (contact force that causes by pressurization), they are for circuit breaker, especially the function under short circuit condition has the decision meaning.In order to reach the necessary function reliability, carry out work by the mid point of the top adjustment part moving switch axle that has illustrated or adjustable coupling bar.By another kind of scheme, whole system is designed to still have enough reliabilities under worst situation, that is to say that this device design is overdimensioned (ü erdimensioniert).
By the known a kind of low-voltage circuit breaker of EP1218898, it comprises a switch-box and a movable contact supporting.Here be set to can be rotating and be given for the installation contact lever for contact supporting.The lever chain that one drive unit and couples together this drive unit and contact supporting, be used to make contact supporting around the supporting point revolution so that switch on and off circuit breaker.
The objective of the invention is low-voltage circuit breaker is designed to, can reduce expense that is used for the required configuration aspects of contact lever motion and the characteristic of improving circuit breaker generally.
This purpose reaches by a kind of low-voltage circuit breaker, it comprises the roll forming body that can install rotatably around its longitudinal axis in the enclosure, especially a switch shaft, wherein, the roll forming body have one or more on the circular cross section of this roll forming body by string recess that determine, that be designed to the line of rabbet joint, be used for holding respectively a contact lever, and, the rotation by the roll forming body make described contact lever and circuit breaker one especially the top connection bus be connected.
The present invention is based on following understanding, by switch shaft motion contact lever the time, as common will the realization in the current circuit breaker by a plurality of parts.Adding up of these part tolerances can bring negative effect to the effectiveness of switch.Owing to this reason, advised a kind of switch shaft or a kind of roll forming body of rotatably installing according to the present invention, it is unified in the function of switch shaft and the function of contact supporting all over the body.Contact lever directly is bearing on the roll forming body of rotatably installing.Save part in this way and reduce tolerance.By rotating the roll forming body uniquely, power is directly passed to contact lever, and set up being connected of contact lever and fixed contact, be in this example and being connected of top connection bus.Avoided power transmission here by a plurality of parts.By cancelling employed coupling bar and contact supporting in the hitherto known scheme, the gross tolerance scope of the part that participates in the connection process is obviously reduced.No longer need in this case to adjust by changing part.
Another favourable design of the present invention is characterised in that described contact lever is arranged essentially parallel to string and/or arranges basically tangentially.By this favourable laying structure of contact lever, the curve movement of contact lever is not extended as the straight line sliding motion for another example, but when roll forming body or switch shaft rotation, have a kind of tangible round track characteristic.In the connection process, that is during the rotation of roll forming body, the contact lever that is rotatably installed on this roll forming body meets with fixed contact on some angles.The arranged tangential of contact lever guarantees to set up a kind of excellent contact.
Another favourable design of the present invention is characterised in that, described contact lever is connected with the roll forming body by the coupling pin and/or has cable at this first end at one first end, is used for being connected with bottom connection bus especially.And by being connected with coupling pin, the movement of realization contact lever promptly, when the roll forming body rotates or when switch shaft rotates, can unhinderedly be slided along fixed contact on fixed contact when contact lever and fixed contact meet.In addition, described movement combines with contacting stage clip, has favourable effect for needed contact pressure on connection bus.The coupling pin that is used for fixing is installed in the lower end of contact lever, can reach thus to make contact lever have big as far as possible locomitivity.Owing to top said reason, at the fixing described cable that leads to one second fixed contact or lead to the bottom connection bus in the lower end of contact lever.
Another favourable design of the present invention is characterised in that, described contact lever is arranged as, contact lever is stretched out at the circumference of second end from the roll forming body, and when rotating, the roll forming body is used for electrically contacting with the foundation of top connection bus, when the roll forming body reverses, be used for contacting, stipulate all that when implementing these two kinds rotations contact lever slides along it on the contact-making surface of top connection bus with the disengagement of top connection bus.By contact lever in the roll forming body or the exposure in the combination of forming by switch shaft and contact supporting and expose the position of head and arrange that tangentially contact lever also continues rotation after meeting with fixed contact.Therefore, the surface that no matter causes contact lever when closing of power circuit breaker or when it disconnects is at sliding motion on the connection bus of top on the fixed contact or in the present embodiment.By this motion mode, in each switching process, purify two sides' contact, thereby cause prolonging electric useful life.
Another favourable design of the present invention is characterised in that, described roll forming body is provided with some and is used for installing respectively at least one spring, especially contacts the installing hole of stage clip in the described recess that is designed to the line of rabbet joint.Also be given for to install by the roll forming body that will make up switch shaft and contact supporting and contact stage clip, can realize a kind of structurally simple especially and effective scheme for the switching process in circuit breaker.This scheme only needs a small amount of part, and the minimizing of part causes the minimization of tolerance again.
Another favourable design of the present invention is characterised in that described spring is designed to helical spring.Adopt this favourable design, produce or realize making contact lever to press against pressure or power on fixed contact or the top connection bus with effective and efficient manner as far as possible.
In a word, compare with hitherto known scheme by system of the present invention and have following advantage:
Owing to omitted some parts, especially coupling bar and contact supporting, less and thereby the needed spring energy-storage of minimizing drive unit of quality that makes motion.Here, drive unit is made of the complex of being made up of switch shaft and contact supporting of roll forming in the present invention.Disconnect and closing course by tangentially being installed in contact element or the tangible radial motion of contact support that causes on the roll forming body owing to contact lever, and cause improving the self-purging effect of contact.In addition, integrated also the causing of switch shaft and contact supporting especially significantly rotatablely moves in switching process, thereby improve the arc quenching characteristic of system, make electric arc more promptly to be imported privileged direction in the quenching pot, consequently might be able to shorten the quenching time because the rising characteristic that separates back contact supporting motion at contact produces one.By reducing number of spare parts, the tolerance range of function group " switch element " obviously narrows down.Can cancel special adjusting mechanism.Can reduce energy-stored spring equally, because needn't adopt the over dimensioning design, because the quantity of required part has reduced to minimum degree and need not tolerance is compensated.
Describe the present invention in detail by accompanying drawing below.Wherein:
Fig. 1 represents that with cross-sectional view one comprises the low-voltage circuit breaker of roll forming body and contact lever;
Fig. 2 represents that shell opens the vertical view of roll forming body of back one low-voltage circuit breaker; And
Fig. 3 represents that with vertical view and cross-sectional view one has the roll forming body of recess.
Fig. 1 represents a low-voltage circuit breaker, and it comprises shell 1 and a roll forming body 2 of rotatably installing.Switch has top connection bus 5 and bottom connection bus 6.Bottom connection bus 6 is connected with contact lever 4 by stube cable 8.Contact lever 4 is fixed on the roll forming body 2 by coupling pin 7.Contact lever 4 comes on the roll forming body 2 by 10 of stage clips of contact at upper end E2.Left figure expression circuit breaker is shown in an open position.Right figure expression circuit breaker is in the close position.In make position, the rotation D of contact lever 4 by roll forming body 2 reaches with the contact-making surface 9 of top connection bus 5 and contacts.Form the connection of switch thus.
Described contact lever 4 is in the recess 3 of roll forming body 2, and recess is line of rabbet joint shape and definite by string S on the circular cross section K of roll forming body 2.
By roll forming body 2 along clockwise direction the D that rotatablely moves in the drawings, contact lever 4 is towards contact-making surface 9 motions of top connection bus 5.Under the connection or closure state of right figure, improved the pressure of contact lever 4 on contact-making surface 9 by contact stage clip 10, make to form reliably to connect.When switching on and off, contact lever 4 is finished a kind of quasi-circular motion, and this causes contact-making surface 9 slips of the surface of contact lever 4 along top connection bus 5.Anticlockwise rotatablely moving when opening switch causes contact lever 4 to slide along it on contact-making surface 9 equally.This slip as radial motion causes friction when switching on and off, thereby causes in each switching process contact being carried out primary purification.
Fig. 2 represents that roll forming body 2 is rotatably installed in the shell 1 of circuit breaker with its longitudinal axis 11.Contact lever 4 is mounted in the recess 3 movingly by coupling pin 7.Recess 3 is designed to line of rabbet joint shape, so keep roll forming body 2 to have complete circular cross section K and surround contact lever 4 from the side in the both sides of recess 3.Relative that end E2 of end position that mounts with by means of coupling pin 7 of contact lever 4 stretches out from the circular cross section K of roll forming body 2.This second end E2 of contact lever 4 is on the height identical with the top connection bus 5 of shell 1.Expression does not have that casing half of upper and lower connection bus 5,6 in that part of the expression roll forming body 2 of figure.In order to implement the D that rotatablely moves of roll forming body 2, apply a power by the longitudinal axis 11, this power is directly passed to contact lever 4.Any a plurality of contact levers 4 can be installed here in the recess 3 of roll forming body 2.
Fig. 3 represents roll forming body 2 with side direction vertical view and cross-sectional view, and it can be counted as the compound action of switch shaft and contact supporting.Roll forming body 2 has the longitudinal axis 11 and some recesses 3.These recesses 3 are determined by string S in the circular cross section K of roll forming body 2.The circumference K that described roll forming body 2 is kept perfectly in the both sides of recess 3 is so recess 3 separates each other by the material dividing plate.Recess 3 is used to install contact lever 4.In the vertical view of the top of roll forming body 2, expressed the installing hole 12 that is used to install contact stage clip 10.
By being applied to rotatablely moving on the longitudinal axis 11, make whole roll forming body 2 towards 5 motions of top connection bus, and the described contact lever 4 that is installed in movingly in the recess 3 make contact closure.
In a word, the present invention relates to a kind of low-voltage circuit breaker, wherein be used to set up the contact lever 4 that electrically contacts and directly be contained in the roll forming switch shaft 2 that is used to drive contact lever 4.Contact lever 4 is contained in the recess 3 and improves pressure on the contact-making surface 9 that contact levers 4 affact connection bus 5 by contact stage clip 10.Set up electrically contacting between contact lever 4 and the described contact-making surface 9 by rotary switch axle 2.
Claims (7)
1. low-voltage circuit breaker, it comprises roll forming body (2), the especially switch shaft that can install rotatably around its longitudinal axis (11) in shell (1), wherein,
-described roll forming body (2) has one or more circular cross sections (K) at this roll forming body (2) to be gone up by string (S) recess definite, that be designed to the line of rabbet joint (3), and these recesses are respectively applied for and hold a contact lever (4), and
-set up described contact lever (4) and this circuit breaker one being connected between the top connection bus (5) especially by the rotation (D) of described roll forming body (2).
2. according to the described low-voltage circuit breaker of claim 1, it is characterized by: described contact lever (4) is arranged essentially parallel to described string (S) and/or arranges basically tangentially.
3. according to claim 1 or 2 described low-voltage circuit breakers, it is characterized by: described contact lever (4) is connected with described roll forming body (2) by a coupling pin (7) at one first end (E1).
4. according to each described low-voltage circuit breaker in the claim 1 to 3, it is characterized by: described contact lever (4) has a cable (8) at first end (E1), be used for one especially bottom connection bus (6) be connected.
5. according to each described low-voltage circuit breaker in the claim 1 to 4, it is characterized by: described contact lever (4) is arranged as these contact levers (4) are stretched out at the circumference of one second end (E2) from described roll forming body (2), and when described roll forming body (2) rotation (D), be used to make contact lever (4) and described especially top connection bus (5) foundation to electrically contact, when described roll forming body (2) reverses, be used to make contact lever (4) to throw off and electrically contact, stipulate all that when implementing these two kinds rotations described contact lever (4) slides along the contact-making surface (9) of described top connection bus (5) with described connection bus (5).
6. according to each described low-voltage circuit breaker in the claim 1 to 5, it is characterized by: described roll forming body (2) is provided with some and is used for installing respectively at least one spring (10), especially contacts the installing hole (12) of stage clip in the described recess (3) that is designed to the line of rabbet joint.
7. according to the described low-voltage circuit breaker of claim 6, it is characterized by: described spring (10) is designed to helical spring.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10344652.4 | 2003-09-25 | ||
| DE2003144652 DE10344652A1 (en) | 2003-09-25 | 2003-09-25 | Low-voltage circuit breaker with radial contact movement by integration of the contact carrier in the switching shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1846289A true CN1846289A (en) | 2006-10-11 |
Family
ID=34384290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004800251108A Pending CN1846289A (en) | 2003-09-25 | 2004-09-10 | Low-voltage power circuit breaker having radial contact movement by integrating the contact supports in the actuating shaft |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1665303A1 (en) |
| CN (1) | CN1846289A (en) |
| DE (1) | DE10344652A1 (en) |
| WO (1) | WO2005031775A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376496A (en) * | 2010-08-23 | 2012-03-14 | 上海电科电器科技有限公司 | Contact pressurized structure of moulded case circuit breaker |
| CN101595544B (en) * | 2006-12-14 | 2013-07-24 | Ids技术有限公司 | Electrical switch with a contact element mounted such that it can rotate |
| CN104241056A (en) * | 2013-06-13 | 2014-12-24 | 松下电器产业株式会社 | Contact device and circuit breaker |
| CN104662631A (en) * | 2012-10-02 | 2015-05-27 | 阿尔斯通技术有限公司 | Electrical contact device of the contact finger type with a strong nominal current |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465255B (en) * | 2014-12-25 | 2016-07-06 | 常熟开关制造有限公司(原常熟开关厂） | A kind of low-voltage breaker contact system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE539148A (en) * | 1954-08-24 | |||
| DE1909358U (en) * | 1964-11-11 | 1965-02-04 | Stotz Kontakt Gmbh | SWITCH WITH A HOLDING DEVICE ON THE CONTACT CARRIER FOR A CONTACT FINGER WORKING TOGETHER WITH A CONTACT PRESSURE SPRING. |
| FR2295553A1 (en) * | 1974-12-17 | 1976-07-16 | Saparel | Circuit breaker for consumer - uses single unit in multiple format with arc extinction and optional trips |
| US4095074A (en) * | 1976-10-12 | 1978-06-13 | Amp Incorporated | Switch for card edge |
| FR2552926B1 (en) * | 1983-10-04 | 1985-12-27 | Hager Electro | IMPROVEMENTS ON SWITCHES WITH TILTING CONTACT HOLDER |
| FR2686453B1 (en) * | 1992-01-17 | 1994-04-08 | Legrand | DIFFERENTIAL SWITCH. |
| DE19948695B4 (en) * | 1999-09-30 | 2009-02-05 | Siemens Ag | Low-voltage circuit breaker with a movable contact carrier with end-position retaining spring |
| DE50001582D1 (en) * | 1999-09-30 | 2003-04-30 | Siemens Ag | LOW VOLTAGE CIRCUIT BREAKER WITH A SWITCHING CHAMBER AND A MOVABLE CONTACT BRACKET |
| DE10149020C1 (en) * | 2001-09-28 | 2003-01-16 | Siemens Ag | Contact set for LV switching device has cooperating contours between contact lever and contact carrier in vicinity of bearing pin for ensuring smooth pivot movement of contact lever |
-
2003
- 2003-09-25 DE DE2003144652 patent/DE10344652A1/en not_active Ceased
-
2004
- 2004-09-10 WO PCT/DE2004/002049 patent/WO2005031775A1/en not_active Application Discontinuation
- 2004-09-10 EP EP04786769A patent/EP1665303A1/en not_active Withdrawn
- 2004-09-10 CN CNA2004800251108A patent/CN1846289A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101595544B (en) * | 2006-12-14 | 2013-07-24 | Ids技术有限公司 | Electrical switch with a contact element mounted such that it can rotate |
| CN102376496A (en) * | 2010-08-23 | 2012-03-14 | 上海电科电器科技有限公司 | Contact pressurized structure of moulded case circuit breaker |
| CN102376496B (en) * | 2010-08-23 | 2014-01-15 | 上海电科电器科技有限公司 | Contact pressurized structure of moulded case circuit breaker |
| CN104662631A (en) * | 2012-10-02 | 2015-05-27 | 阿尔斯通技术有限公司 | Electrical contact device of the contact finger type with a strong nominal current |
| CN104662631B (en) * | 2012-10-02 | 2017-08-08 | 通用电气技术有限公司 | Contact finger-type electrical contact equipment with strong rated current |
| CN104241056A (en) * | 2013-06-13 | 2014-12-24 | 松下电器产业株式会社 | Contact device and circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10344652A1 (en) | 2005-04-28 |
| EP1665303A1 (en) | 2006-06-07 |
| WO2005031775A1 (en) | 2005-04-07 |
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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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |