CN102306568B - Electric switch device - Google Patents
Electric switch device Download PDFInfo
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- CN102306568B CN102306568B CN2011101897148A CN201110189714A CN102306568B CN 102306568 B CN102306568 B CN 102306568B CN 2011101897148 A CN2011101897148 A CN 2011101897148A CN 201110189714 A CN201110189714 A CN 201110189714A CN 102306568 B CN102306568 B CN 102306568B
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- contact
- cavity
- groove
- contact supporting
- guide
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Abstract
The invention discloses an electric switch device which comprises a base and a contact arc extinguishing system, wherein the contact arc extinguishing system is installed in the base, the contact arc extinguishing system comprises a plurality of moving contact units which are separately arranged by interpoles at intervals and correspond to each pole and static contacts of which the number corresponds to the number of the moving contacts; each moving contact unit comprises a contact support; guide parts are arranged in pairs corresponding to each pole on the base, each pair of guide parts can form a cavity with the base, each contact support is rotatably arranged in each cavity, rotating clearances can be formed between each contact support and each guide part as well as each contact support and the base at which each cavity locates, and an accommodation cavity is arranged in each rotating clearance. According to the invention, the accommodation cavities are arranged in the rotating clearances and metal particles can be gradually gathered in the accommodation cavities with the rotation of the contact supports, the relative rotation of the contact supports and the cavities can not be impacted because the metal particles cannot exist among the relative rotating surfaces of the contact supports and the side walls and the bottom sides of the cavities for a long time, thereby ensuring the performances of the electric switch device.
Description
Technical field
The present invention relates to a kind of electric switchgear, belong to Low Voltage Electrical Apparatus.
Background technology
Existing electric switchgear, referring to Fig. 1, Fig. 2, comprise pedestal 1 and contact arc-extinguishing system 2, contact arc-extinguishing system 2 is arranged in pedestal 1, and this contact arc-extinguishing system comprises several by moving-contact unit 21 and quantity with the moving-contact unit 21 corresponding fixed contact 22 of pole spacing 11 every each utmost point of correspondence of establishing; Moving-contact unit 21 comprises contact supporting 211, and contact supporting 211 is cylindric; Be provided with in couples guide 12 corresponding to each utmost point on pedestal 1, be formed with cavity 121 between every pair of guide 12, contact supporting 211 is placed in cavity 121 rotationally.
In the electric switchgear of said structure, by pole spacing 11,, every establishing, for the cavity that holds moving-contact unit 21, fixed contact 22, arc extinguishing grid pieces 23, be called the contact chamber.The contact chamber is the core of switching device, and the quality of contact chamber has determined every electrical performance indexes of electric switchgear.In the electric switchgear of said structure, contact is indoor have been set up guide 12 and has formed cavitys 121, and the mode of the circular arc side walls enclose contact supporting 211 by cavity 121 supports moving-contact unit 21 and guides the motion of moving-contact unit 21.
in actual use, moving contact and fixed contact can often be connected and breaking current, having electric arc in this process produces, electric arc can burn moving, the metallic object such as fixed contact and arc extinguishing grid pieces, make, fixed contact, arc extinguishing grid pieces discharges metallic, meeting interior random rolling in contact chamber 6 after these metallics are cooling, less metallic may enter in cavity 121, snap between the arc surface of contact supporting 211 and cavity 121, cause the frictional resistance of contact supporting 211 and cavity 121 to increase, damage the surface of contact supporting 211 and cavity 121, and then cause closing of electric switchgear, opening velocity is slack-off gradually, finally have influence on the electrical property of electric switchgear.
Summary of the invention
The invention provides a kind of electric switchgear, can effectively collect the metallic that enters between contact supporting and housing surface, prevent that metallic from affecting relatively rotating between contact supporting and cavity.
A kind of electric switchgear, comprise pedestal and contact arc-extinguishing system, and contact arc-extinguishing system is arranged in pedestal, this contact arc-extinguishing system comprise several by pole spacing every the moving-contact unit of each utmost point of correspondence of the establishing fixed contact corresponding with moving-contact unit with quantity; Moving-contact unit comprises contact supporting; Be provided with in couples guide corresponding to each utmost point on pedestal, the every pair of guide and pedestal form cavity jointly, contact supporting is placed in cavity rotationally,, reaching and form running clearance between the pedestal at contact supporting and cavity place between contact supporting and guide, it is characterized in that: be provided with container cavity in described running clearance.
Described container cavity be opened at least one first groove of each guide surface and/or be opened in contact supporting corresponding guide each sidewall at least one second groove and/or be opened in the contact supporting lower surface and/or be opened at least one the 3rd groove of cavity place base-plates surface.
Described the first groove is strip and with the axial direction of contact supporting, extends.
Described the second groove is discrete point-like or is strip and with the axial direction of contact supporting, extends.
Described the second groove is strip and with the radial direction of contact supporting, extends.
Described the 3rd groove is discrete point-like or is strip.
Described contact supporting is cylindrical.
the present invention is by arranging container cavity between guide and contact supporting and in the running clearance between the pedestal at contact supporting and cavity place, container cavity adopts the surface of each guide in every pair of guide to offer respectively on each sidewall of corresponding guide of at least one first groove and/or contact supporting to offer respectively at least one second groove and/or is opened in the contact supporting lower surface and/or is opened at least one the 3rd groove of cavity place base-plates surface, make the metallic that produces in the connection of movable feeler lever and fixed contact and breaking course, after entering between contact supporting and cavity, rotation along with contact supporting, metallic converges in the container cavity of the first groove and/or the second groove and/or the formation of the 3rd groove gradually, guarantee can the existence of metallic not being arranged for a long time between surface in relative rotation of sidewall of contact supporting and cavity and affected both relatively rotating.So also just guaranteed the performance of electric switchgear.
Description of drawings
Fig. 1 is the structure chart of the electric switchgear of prior art.
The vertical view of the switching device of Fig. 2 Fig. 1.
Fig. 3 is the structure chart of the electric switchgear of the embodiment of the present invention one.
Fig. 4 is the vertical view of Fig. 3 electric switchgear.
Fig. 5 is the structure chart of contact supporting of the electric switchgear of embodiments of the invention two.
Fig. 6 is the vertical view of the electric switchgear of embodiments of the invention two.
Fig. 7 is the structure chart of contact supporting of the electric switchgear of embodiments of the invention three.
Fig. 8 is the structure chart of contact supporting of the electric switchgear of embodiments of the invention four.
Fig. 9 is the structure chart of the electric switchgear of embodiments of the invention five.
Figure 10 is the structure chart of the electric switchgear of embodiments of the invention six.
Embodiment
As Fig. 3 to 10, a kind of electric switchgear of the present invention, comprise pedestal 1 and contact arc-extinguishing system 2, contact arc-extinguishing system 2 is arranged in pedestal 1, and this contact arc-extinguishing system comprises several by moving-contact unit 21 and quantity with the moving-contact unit 21 corresponding fixed contact 22 of pole spacing 11 every each utmost point of correspondence of establishing; Moving-contact unit 21 comprises contact supporting 211 and the movable feeler lever 212 that is located on contact supporting 211, and contact supporting 211 is cylindric; Be provided with in couples guide 12 corresponding to each utmost point on pedestal 1, be formed with cavity 121 between every pair of guide 12, contact supporting 211 is placed in cavity 121 rotationally,, reaching and form running clearance between the pedestal 1 at contact supporting 211 and cavity 121 places between contact supporting 211 and guide 12, be provided with container cavity in running clearance.Container cavity can be the cavity that is placed in guide surface, and namely the surface of each guide in the every pair of guide 12 offers respectively at least one first groove 122; Can be also the cavity that is placed in contact supporting 211 surfaces, namely offer respectively at least one second groove 213 on each sidewall of the corresponding guide 12 of contact supporting 211; Can be also to be opened in cavity contact supporting 211 lower surfaces and/or that be opened in the surface of cavity 121 place pedestals 1, i.e. at least one the 3rd groove 100; Also or on above-mentioned any two surfaces all offer cavity, both offered the first groove 122 on guide 12, offer again the second groove 213 on contact supporting 211; Or, both offered the first groove 122 on guide 12, offer the 3rd groove 100 at contact supporting 211 lower surfaces again; Or, both offered the first groove 122 on guide 12, be again that the upper surface of the supporting contact supporting of pedestal is offered the 3rd groove 100 on the surface of cavity 121 place pedestals 1; Or cavity is all offered on any three surfaces; Or cavity is all offered on four surfaces.
As Fig. 3,4, in one embodiment of the present of invention, the first groove 122 is strip and with the axial direction of contact supporting 211, extends, and divides symmetrically the inner surface of each guide 12 that is located at a pair of guide 12 with the center of rotation of moving-contact unit 21.
As Fig. 5,6, in an alternative embodiment of the invention, the second groove 213 is strip and with the axial direction of contact supporting 211, extends, and divides symmetrically with the center of rotation of moving-contact unit 21 on each sidewall of the corresponding guide 12 that is located at contact supporting 211.
As Fig. 7, in another embodiment of the present invention, the second groove 213 is strip and with the radial direction of contact supporting 211, extends.
As Fig. 8, in of the present invention and then embodiment, the second groove 213 is the discrete point-like grooves of a series of circles, and array is arranged on each sidewall of corresponding guide 12 of contact supporting 211.
As Fig. 9, in of the present invention and then another embodiment, it is the upper surface of the supporting contact supporting 211 of pedestal 1 that electric switchgear has been offered the surface that the first groove 122, the three grooves 100 are opened in cavity 121 place pedestals 1.
As Figure 10, in of the present invention and then another embodiment, electric switchgear is only that the upper surface of the supporting contact supporting 211 of pedestal 1 has been offered the 3rd groove 100 on the surface of cavity 121 place pedestals 1.
Certainly, the present invention also can be opened in the 3rd groove 100 lower surface of contact supporting 211, just repeats no more here.
The metallic that produces in the connection of movable feeler lever 212 and fixed contact 22 and breaking current process, after entering between contact supporting 211 and cavity 121, rotation along with contact supporting 211, metallic can converge in the first groove 122 and/or the second groove 213 and/or the 3rd groove 100 gradually, has guaranteed the sidewall of contact supporting 211 and cavity 121 and can the existence of metallic not being arranged for a long time between surface in relative rotation of diapire and has affected both relatively rotating.So also just guaranteed the performance of electric switchgear.
Claims (7)
1. electric switchgear, comprise pedestal (1) and contact arc-extinguishing system (2), contact arc-extinguishing system (2) is arranged in pedestal (1), and this contact arc-extinguishing system (2) comprises several by moving-contact unit (21) and quantity with moving-contact unit (21) the corresponding fixed contact (22) of pole spacing (11) every each utmost point of correspondence of establishing; Moving-contact unit (21) comprises contact supporting (211); Pedestal (1) is upper is provided with guide (12) in couples corresponding to each utmost point, every pair of guide (12) and pedestal (1) form cavity (121) jointly, contact supporting (211) is placed in cavity (121) rotationally,, reaching and form running clearance between the pedestal (1) at contact supporting (211) and cavity (121) place between contact supporting (211) and guide (12), it is characterized in that: be provided with container cavity in described running clearance.
2. electric switchgear as claimed in claim 1 is characterized in that: described container cavity is at least one second groove (213) of each sidewall of at least one first groove (122) of being opened in each guide (12) surface and/or the corresponding guide (12) that is opened in contact supporting (211) and/or be opened in contact supporting (211) lower surface and/or be opened at least one the 3rd groove (100) on cavity (121) place pedestal (1) surface (10).
3. electric switchgear as claimed in claim 2 is characterized in that: described the first groove (122) is strip and with the axial direction of contact supporting (211), extends.
4. electric switchgear as claimed in claim 2 is characterized in that: described the second groove (213) is for discrete point-like or be strip and with the axial direction of contact supporting (211), extend.
5. electric switchgear as claimed in claim 2 is characterized in that: described the second groove (213) is strip and with the radial direction of contact supporting (211), extends.
6. electric switchgear as claimed in claim 2 is characterized in that: described the 3rd groove (100) is for discrete point-like or be strip.
7., as claim 3,4,5 or 6 described electric switchgears, it is characterized in that: described contact supporting (211) is for cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101897148A CN102306568B (en) | 2011-07-07 | 2011-07-07 | Electric switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101897148A CN102306568B (en) | 2011-07-07 | 2011-07-07 | Electric switch device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102306568A CN102306568A (en) | 2012-01-04 |
| CN102306568B true CN102306568B (en) | 2013-11-13 |
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ID=45380412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101897148A Active CN102306568B (en) | 2011-07-07 | 2011-07-07 | Electric switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102306568B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623199B (en) * | 2012-04-19 | 2015-03-18 | 上海诺雅克电气有限公司 | Electric conduction system of switch device, low-voltage plastic-shell circuit breaker and thermal overload relay |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664971A (en) * | 2000-03-01 | 2005-09-07 | 通用电气公司 | Circuit breaker mechanism tripping cam |
| CN2785128Y (en) * | 2005-04-29 | 2006-05-31 | 浙江德力西电器股份有限公司 | Installing structure of breaker contact axle |
| CN2899084Y (en) * | 2006-01-25 | 2007-05-09 | 大全集团有限公司 | Spin-dle seizing mechanism of circuit breaker |
| CN202142440U (en) * | 2011-07-07 | 2012-02-08 | 常熟开关制造有限公司(原常熟开关厂） | Electric switch device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4356267B2 (en) * | 2001-05-28 | 2009-11-04 | 富士電機機器制御株式会社 | Circuit breaker for wiring |
-
2011
- 2011-07-07 CN CN2011101897148A patent/CN102306568B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664971A (en) * | 2000-03-01 | 2005-09-07 | 通用电气公司 | Circuit breaker mechanism tripping cam |
| CN2785128Y (en) * | 2005-04-29 | 2006-05-31 | 浙江德力西电器股份有限公司 | Installing structure of breaker contact axle |
| CN2899084Y (en) * | 2006-01-25 | 2007-05-09 | 大全集团有限公司 | Spin-dle seizing mechanism of circuit breaker |
| CN202142440U (en) * | 2011-07-07 | 2012-02-08 | 常熟开关制造有限公司(原常熟开关厂） | Electric switch device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102306568A (en) | 2012-01-04 |
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