CN101409163A - Method of manufacturing contact pads for electrical switchgear and contact pads - Google Patents
Method of manufacturing contact pads for electrical switchgear and contact pads Download PDFInfo
- Publication number
- CN101409163A CN101409163A CNA2008101698706A CN200810169870A CN101409163A CN 101409163 A CN101409163 A CN 101409163A CN A2008101698706 A CNA2008101698706 A CN A2008101698706A CN 200810169870 A CN200810169870 A CN 200810169870A CN 101409163 A CN101409163 A CN 101409163A
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- CN
- China
- Prior art keywords
- contact
- character
- contact disc
- slit
- disc
- 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
- H01H1/02—Contacts characterised by the material thereof
- H01H1/0203—Contacts characterised by the material thereof specially adapted for vacuum switches
- H01H1/0206—Contacts characterised by the material thereof specially adapted for vacuum switches containing as major components Cu and Cr
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
- H01H33/6643—Contacts; Arc-extinguishing means, e.g. arcing rings having disc-shaped contacts subdivided in petal-like segments, e.g. by helical grooves
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- Manufacture Of Switches (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention relates to a method of manufacturing contact pads (2) for electrical switchgear. The contact pad includes at least a slit (4). The method involves: identifying and forming four elemental parts (3a-3d) of a contact pad (2), where the elemental parts not includes any slit and can repeat for many times; assembling the elemental parts to obtain the contact pad in its final form e.g. disc form, wherein, the slits (4) are formed by opposite edges (4a, 4b) of the two adjacent elemental parts.
Description
Technical field
The present invention relates to make the method for the contact disc of electronic switching device, described contact disc comprises at least one slit, and relates to the contact disc of producing according to said method.
Background technology
Making electronic contact carries out according to following known way.At first, make performing member, this performing member is a column, and the big and thickness of the final contact diameter of diameter after than machine work is contact thickness.With this performing member sintering, calibration annealing then, give desired physics in this contact and chemical attribute, comprise the conductivity of requirement.
This performing member of machine work gives this contact final form then.The machine work of contact form, particularly slit influences the cut-out function of vacuum cartridge.This manufacture process finishes with the deburring step, and the purpose of this step is to remove any square rim that machine tool stays, and these square rim influence the dielectric strength of the contact in the vacuum cartridge.
Therefore, can distinguish two key steps of electronic contact manufacture process: the firstth, the sintering performing member also obtains final physical and the metallurgical step of chemical attribute, and second is machining steps.The step in back does not really have any added value in contact fabrication processes.
When specific supplier carried out manual deburring operation, this bottom at zone such as the machine work slit that the instrument difficulty or ease arrive was a necessary operation, and then the machine work cost is generally speaking bigger.
Summary of the invention
The present invention has overcome these defectives, has proposed a kind ofly to make the method for contact disc for electronic switching device, and this method is easy to implement and reduce cost, and the invention allows for a kind of contact disc that obtains by this method.
For this reason, the purpose of this invention is to provide a kind of method of making the contact disc for electronic switching device, described contact disc comprises at least one slit, described method is characterised in that, comprise that at least one distinguishes and make the step of the contact disc basic element of character, described parts do not comprise any slit and can repeated several times and suitably forming the final form of contact disc after the assembling; With the described basic element of character of assembling forming the step of the final form of described contact disc, described slit is realized by two edges of facing of two adjacent basic elements of character.
In accordance with a specific feature of the present invention,, between above manufacturing and number of assembling steps, described method comprises the step that calibration is annealed then, and described calibration and annealing steps are designed to give the suitable physical chemistry attribute of described electronic contact material of the above-mentioned basic element of character.
According to a kind of feature, after described calibration and annealing steps, described method comprises the deburring step.
According to another kind of feature, after described number of assembling steps, described method comprises described assembly is fixed on step on the strutting piece of contact.
According to another kind of special characteristic, the calibration of the described basic element of character and number of assembling steps carry out simultaneously by the sintered component that mechanical strength is provided for the contact.
According to another kind of feature, the described basic element of character is made by sintering.
Further aim of the present invention provides a kind of contact disc basic element of character, described parts do not comprise slit and energy repeated several times, thereby after described parts are suitably assembled, form the final form of contact disc, described disc comprises slit, and each slit is formed by two edges of facing that belong to two adjacent basic elements of character respectively.
According to a kind of special characteristic, described parts are become by 1/4th annulars that the part in its neighboring is attached to nose shape parts, and these parts have: circular periphery, the circular periphery edge of formation contact disc; With straight inward flange, the straight quadrature of the outer ledge of this straight inward flange and adjacent basic element of character formation contact disc is the slit of (orthoradial) radially; And outer ledge, the described straight inward flange of this outer ledge and the adjacent basic element of character forms second quadrature slit radially.
Further object of the present invention provides a kind of contact disc, and this disc is characterised in that, is formed by at least two basic elements of character that comprise above-mentioned feature individually or in combination.
According to a kind of feature, the slit that belongs to the contact disc is radial slit or quadrature shape of slit radially.
Further object of the present invention provides a kind of electronic switching device and a kind of vacuum cartridge that comprises at least one contact disc, and described disc comprises independent above-mentioned feature or the above-mentioned feature that combines.
Description of drawings
But other advantages of the present invention and feature will become more clear from following detailed description, below describe in detail with reference to the accompanying drawing that only provides as the example purpose, and wherein:
Fig. 1 is the perspective view of contact disc in the prior art;
Fig. 2 is the perspective view according to contact of the present invention disc;
Fig. 3 is the perspective view according to the basic element of character of contact of the present invention disc;
Fig. 4 shows contact of the present invention disc and is fixed to contact strutting piece perspective view before;
Fig. 5 is the perspective view according to contact of the present invention disc and sintered component;
Fig. 6 and 7 is two perspective views that disc two kinds of different embodiment in contact are shown respectively.
Embodiment
In Fig. 1, the contact disc 1 of prior art is designed to be engaged on vacuum the cartridge interior rest(ing) contact or current collector end as can be seen, and this vacuum cartridge is designed to be integrated in the circuit-breaker of medium voltate especially, implements circuit interruption when breaking down.With this known way, this vacuum cartridge comprises cylindrical shell, wherein accommodate two arc contacts (arcing contact), be respectively static arc contact and moving electric arc contact, this current collector can move between two positions in housing, and these two positions are respectively closing of contact position and contact open position.
According to this execution mode of the prior art, contact disc 1 is a single block, by sintering then the machine work slit make.
Contact disc 2 made according to the method for the present invention is shown in Figure 2.
The first step of this method comprises that identification does not comprise the shape of the basic element of character 3 of slit, and these parts are designed to the repetition specific times, then these basic elements of character 3 is fitted together with designing, thereby forms the dish type disc 2 that comprises slit 4.
The basic element of character 3 is for example made by sintering, without any need for extra machine work.The slit 4 of contact disc 2 is formed by two opposed edges 4a, 4b belonging to two adjacent basic element of character 3a, 3b respectively.
According to the embodiment shown in Fig. 1 to 4, disc 2 is made of 4 basic element of character 3a, 3b, 3c, 3d as shown in Figure 3, and described component-assembled forms complete disc together.As shown in Figure 3, each piece primary element 3 is formed by 1/4th rings 5, this 1/4th ring 5 is attached on the part of its neighboring 6 by the parts 7 that are shaped as nose shape, these parts 7 exist circular periphery edge 8, straight inward flange 9 and outer routine edge 10, and this periphery edge forms the circular periphery edge of contact disc 2.
The straight inward flange 9 of primary element 3a forms quadrature slit 11 with the straight outer ledge 10a of adjacent component 3d.The outer ledge 10 of basic element of character 3a forms the straight quadrature slit 11a of contact disc 2 similarly with the straight inward flange 9a of adjacent basic element of character 3b.
After for example having made the basic element of character by sintering, with described basic element of character calibration, to anneal then, the material that gives described parts is with slider material required physics and chemical characteristic.
The parts of Zhi Zaoing can carry out deburring by commercial plant (for example by it is passed through cleaning roller) in this way.Because one of them edge of the basic element of character forms slit edge, so the difficulty at the processing slit edge that runs into when having avoided the whole contact of machine work disc.
This assembly is fixed to contact strutting piece 13, the contact of recombinating thus with the final assembling of the different basic elements of character and by braze fixture 12 then.
Because this basic element of character is littler than final disc size,, can reduce and required investment minimizing so the device of implementing for example comprises the disc forming press.
The step that should be noted that the calibration and the assembling basic element of character can be carried out simultaneously by sintered component 14 and braze fixture 15, and sintered component is guaranteed the mechanical strength of contact, and braze fixture is secured to contact strutting piece 13 with contact disc 12.
The vacuum cartridge of manufacturing method according to the invention particularly suitable circuit-breaker, this circuit breaker has adopted the breaking technique that is called the axial magnetic field technology, as shown in Figure 6, perhaps adopt the radial magnetic field technology, as shown in Figure 7, slit 4 difference according to used breaking technique on contact disc 2 is orientated difference.
The present invention also is applicable to the contact that similarly belongs to electrical switchgear and comprise slit.
Therefore, according to cartridge embodiment shown in Figure 6, slit 16 is a radial slit, and according to cartridge embodiment shown in Figure 7, slit 17 is the radially slit of (orthoradial) of quadrature.
The sections minimum number that constitutes disc is two, and greatest limit is determined by the constraint of technical development.
The method of contact constructed in accordance disc is applicable to any disc, these discs are designed to utilize vacuum technique or other technologies to comprise the contact of slit for switch, circuit-breaker and contactor manufacturing in middle pressure, low pressure or high pressure field, which kind of occasion no matter, as long as this disc can be divided into some not with the basic configuration of slit, these slits can be needed the parts of sintering to bring mechanical equivalent of light fragility.
The present invention can be used for the contact disc that is made of the slider material component, these contact discs are used for interim interrupting short circuit (circuit-breaker) or charging current (switch), perhaps has higher electric endurance (contactor), for example be used for the contact that is made of Cu-Cr, wherein the percentage by weight of chromium is between 10% and 60%.
Therefore realize a kind of method of making the contact disc especially economically according to the present invention, reduced device for carrying out said.
Because basic element of character size is littler than final disc, so in fact reduced used device for carrying out said (for example disc forming press) and required investment reduction.
The present invention can also realize being difficult to the shape of slit of the complexity that realizes by machine work.
In addition, this basic element of character is directly made required size easily by powder metallurgy, owing to there is slit, for complete disc, makes more difficult like this.
The present invention be not limited to certainly described and shown in execution mode, these execution modes only provide as example.
On the contrary, the present invention extends to whole technical equivalents schemes and the combination thereof that comprises described scheme, realizes if these technical equivalents schemes and combination thereof are spirit according to the present invention.
Claims (12)
1. make the method for contact disc for electronic switching device for one kind, described contact disc comprises at least one slit, it is characterized in that, described method comprises:
-at least one distinguishes and makes the step of contact disc (2) basic element of character (3a, 3b, 3c, 3d), and described parts do not comprise any slit (4) and can repeated several times, thereby suitably form the final form of contact disc (2) after the assembling at described parts; With
The described basic element of character of-assembling is to realize the step of the final form of described contact disc, and described slit (4) is formed by two edges of facing (4a, 4b) of two adjacent basic elements of character.
2. the method for manufacturing as claimed in claim 1 contact disc, it is characterized in that, between above-mentioned manufacturing and number of assembling steps, described method comprises the step that calibration is annealed then, and described calibration and annealing steps are designed to give the suitable physical chemistry attribute of described electronic contact material of the above-mentioned basic element of character (3a, 3b, 3c, 3d).
3. the method for manufacturing as claimed in claim 2 contact disc is characterized in that after described calibration and annealing steps, described method comprises the deburring step.
4. as the method for each described manufacturing contact disc of claim 1 to 3, it is characterized in that after described number of assembling steps, described method comprises described assembly is fixed on step on the strutting piece of contact.
5. the method for manufacturing as claimed in claim 2 contact disc is characterized in that, the calibration of the described basic element of character (3a, 3b, 3c, 3d) and number of assembling steps carry out simultaneously by the sintered component (14) that mechanical strength is provided for the contact.
6. the method for each described manufacturing contact disc of claim as described above is characterized in that the described basic element of character (3a, 3b, 3c, 3d) is made by sintering.
7. contact disc basic element of character, described parts (3a, 3b, 3c, 3d) do not comprise slit and energy repeated several times, thereby suitably assemble the back at described parts and form the final form of contact disc (2), described disc comprises slit, and each slit (4) is formed by two edges of facing (4a, 4b) that belong to two adjacent basic elements of character respectively.
8. the contact disc basic element of character as claimed in claim 7 (3a), it is characterized in that, described parts are formed by 1/4th rings (5) that the part (6) in its neighboring is attached to nose shape parts (7), these nose shape parts have: circular periphery (8), and it forms the circular periphery edge of contact disc (2); With straight inward flange (9), the outer ledge (10a) of this straight inward flange and the adjacent basic element of character (3d) forms the straight quadrature slit (11) radially of contact disc (2); And outer ledge (10), the described straight inward flange (9a) of this outer ledge and the described adjacent basic element of character (3d) forms second quadrature slit (11) radially.
9. a contact disc is characterized in that, is formed by claim 7 or 8 described at least two basic elements of character (3a, 3b, 3c, 3d).
10. contact as claimed in claim 9 disc is characterized in that, the described slit (4) that belongs to described contact disc (4) is for radially or quadrature shape radially.
11. an electronic switching device comprises claim 9 or 10 described at least one contact disc (2).
12. a vacuum cartridge comprises claim 9 or 10 described at least one contact disc (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0707166A FR2922355B1 (en) | 2007-10-12 | 2007-10-12 | METHOD FOR MANUFACTURING CONTACTING PELLETS FOR AN ELECTRIC CUTTING APPARATUS AND CONTACT PUTTY OBTAINED ACCORDING TO THIS METHOD |
| FR07/07166 | 2007-10-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101409163A true CN101409163A (en) | 2009-04-15 |
| CN101409163B CN101409163B (en) | 2013-05-29 |
Family
ID=39386438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810169870.6A Active CN101409163B (en) | 2007-10-12 | 2008-10-10 | Contact pads, electrical switchgear installed with the contact pads and vacuum cartridge |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2048675B1 (en) |
| CN (1) | CN101409163B (en) |
| AT (1) | ATE479192T1 (en) |
| DE (1) | DE602008002299D1 (en) |
| FR (1) | FR2922355B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2969367B1 (en) * | 2010-12-17 | 2013-04-26 | Schneider Electric Ind Sas | ELECTRIC CUTTING APPARATUS |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2454157A1 (en) * | 1974-11-14 | 1976-05-26 | Siemens Ag | Vacuum switching tube with contact discs - has contacts divided in separated segments coupled to common current lead via chokes |
| EP0185211B1 (en) * | 1984-11-22 | 1991-01-30 | Hitachi, Ltd. | Vacuum circuit breaker |
| CN1384514A (en) * | 2001-05-09 | 2002-12-11 | 株式会社明电舍 | Electrode for vacuum breaker and its making process |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3422949A1 (en) * | 1984-06-19 | 1985-12-19 | Siemens AG, 1000 Berlin und 8000 München | VACUUM SWITCH TUBES WITH A COIL TO GENERATE A MAGNETIC FIELD |
-
2007
- 2007-10-12 FR FR0707166A patent/FR2922355B1/en not_active Expired - Fee Related
-
2008
- 2008-09-29 EP EP08354064A patent/EP2048675B1/en active Active
- 2008-09-29 DE DE602008002299T patent/DE602008002299D1/en active Active
- 2008-09-29 AT AT08354064T patent/ATE479192T1/en active
- 2008-10-10 CN CN200810169870.6A patent/CN101409163B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2454157A1 (en) * | 1974-11-14 | 1976-05-26 | Siemens Ag | Vacuum switching tube with contact discs - has contacts divided in separated segments coupled to common current lead via chokes |
| EP0185211B1 (en) * | 1984-11-22 | 1991-01-30 | Hitachi, Ltd. | Vacuum circuit breaker |
| CN1384514A (en) * | 2001-05-09 | 2002-12-11 | 株式会社明电舍 | Electrode for vacuum breaker and its making process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101409163B (en) | 2013-05-29 |
| FR2922355B1 (en) | 2009-12-04 |
| FR2922355A1 (en) | 2009-04-17 |
| ATE479192T1 (en) | 2010-09-15 |
| DE602008002299D1 (en) | 2010-10-07 |
| EP2048675A1 (en) | 2009-04-15 |
| EP2048675B1 (en) | 2010-08-25 |
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