CN105070591A - Sealed-type DC contactor - Google Patents
Sealed-type DC contactor Download PDFInfo
- Publication number
- CN105070591A CN105070591A CN201510427424.0A CN201510427424A CN105070591A CN 105070591 A CN105070591 A CN 105070591A CN 201510427424 A CN201510427424 A CN 201510427424A CN 105070591 A CN105070591 A CN 105070591A
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- CN
- China
- Prior art keywords
- metal
- metal core
- contacting plate
- moving contacting
- core bar
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/026—Details concerning isolation between driving and switching circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H2050/028—Means to improve the overall withstanding voltage, e.g. creepage distances
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Contacts (AREA)
Abstract
The invention discloses a sealed-type DC contactor, which comprises static contact points, a moving contact sheet, a metal core rod and a transmission mechanism arranged inside a sealed-type metal casing. According to the sealed-type DC contactor, one traditional metal core rod becomes a composite structure, that is, an insulated piece is added; a metal support is embedded at the upper end part of the insulated piece, and the metal core rod is embedded at the lower end part; the moving contact sheet is connected onto the metal support; and thus the metal core rod and the metal support are separated by the insulated piece. Due to the structure, the moving contact sheet is not conducted with the metal casing any more, the metal casing is not in high potential, each metal piece such as the metal casing, the metal core rod, a metal shaft sleeve and a static magnetic pole adjacent to a coil is in suspended potential, electrical clearance between the moving contact sheet and the coil is equal to the original electrical clearance plus added electrical clearance for the newly-added insulated piece, and thus dielectric voltage withstanding between the coil and the contact point can be improved, and reliability of the product is greatly improved.
Description
Technical field
The present invention relates to a kind of D.C. contactor, particularly relate to a kind of closed type D.C. contactor.
Background technology
At present, existing closed type D.C. contactor on market, as shown in Figure 1, comprise the quiet contact point 101 be located in closed type metal shell 106, moving contacting plate 102, metal core bar 103, dynamic iron core 104, magnetostatic pole 112, metal axle sleeve 105 and coil 107, moving contacting plate 102 is connected with dynamic iron core 104 by metal core bar 103, and dynamic iron core 104 needs to be connected with metal shell 106 (yoke) by its outer sheathed metal axle sleeve 105 due to magnetic circuit, thus cause directly being communicated with between moving contacting plate 102 with metal shell 106.When contactor is in closure state, because quiet contact point 101 (being generally forceful electric power, high potential) is communicated with moving contacting plate 102, thus quiet contact point 101 successively by moving contacting plate 102, metal core bar 103, metal axle sleeve 105 is with metal shell 106 conducting and be in same potential (forceful electric power, high potential).Under these conditions, control coil 107 (is generally light current, electronegative potential) and quiet contact point 101 between electric clearance be equal to electric clearance 108 between control coil and metal shell, this electric clearance is less, dielectric withstanding voltage is lower, and general employing improves the dielectric withstanding voltage between coil and shell in the mode of coil periphery increase insulating tape.But under harsh condition of work, the adhesive tape being used for insulating may be breakdown, and cause forceful electric power to seal in control circuit, destruct limit circuit, causes equipment fault.
In addition, as shown in Figure 2, be flexibly connected by spring 110 between existing closed type D.C. contactor its moving contacting plate 102 and metal core bar 103, namely metal core bar movable upper end is placed through in moving contacting plate, the part extenal fixation that this metal core bar is positioned at this moving contacting plate upper side has jump ring 109, this metal core bar is positioned at the outer sheathed spring 110 of part of this moving contacting plate downside, is provided with pad 111 below spring 110.When metal core bar moves up and down, its impact force action, on jump ring and pad, causes the wearing and tearing of jump ring and pad large, fragile, thus affects the useful life of contactor.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides a kind of closed type D.C. contactor, the electric clearance between coil and contact point and dielectric withstanding voltage can be improved, thus improve the reliability of contactor, significantly reduce the risk that contactor forceful electric power seals in control loop.
The present invention in order to the technical scheme solving its technical problem and adopt is: a kind of closed type D.C. contactor, comprise the quiet contact point be located in closed type metal shell, moving contacting plate, metal core bar and transmission mechanism, this moving contacting plate is connected with the upper end of metal core bar, this transmission mechanism can drive the bottom of this metal core bar to be turned on or off along its axis direction reciprocating motion to make this moving contacting plate and two quiet contact points simultaneously, be provided with insulating part between the upper end of described metal core bar and described moving contacting plate this metal core bar and described moving contacting plate to be insulated isolate.
As a further improvement on the present invention, the upper end of described insulating part is inlaid with metallic support, and this metallic support is flexibly connected with described moving contacting plate, and the bottom of this insulating part is fixedly connected with the upper end of described dynamic metal core bar.
As a further improvement on the present invention, described metallic support is enclosed type frame structure, the bottom of this metallic support is embedded in the upper end of described insulating part, described moving contacting plate is placed in the upper space of enclosed type frame structure of this metallic support, is provided with spring between the downside of this moving contacting plate and the upper side of described insulating part.
As a further improvement on the present invention, the downside of described moving contacting plate is provided with groove, and the upper end of described spring is fixed in this groove.
As a further improvement on the present invention, the upper side of described insulating part is provided with projection, and the bottom of described spring is sheathed in this projection.
As a further improvement on the present invention, the lower end of described spring and described insulating part are connected.
As a further improvement on the present invention, described metallic support is square frame structure.
As a further improvement on the present invention, the periphery, upper end of described metal core bar is provided with annular groove.
As a further improvement on the present invention, the part be positioned at outside described insulating part downside of described metal core bar is provided with step.
As a further improvement on the present invention, described drive mechanism comprises dynamic iron core, metal axle sleeve, returning spring, coil and magnetostatic pole.
The invention has the beneficial effects as follows: traditional metal core bar is changed to a combined structural member by sealing type D.C. contactor, namely insulating part is added, the upper end embedded with metal support of insulating part, bottom embedded with metal core bar, moving contacting plate is connected on metallic support, thus metal core bar and metallic support is separated by insulating part.Such vibrational power flow makes moving contacting plate no longer in metal shell conducting, metal shell is no longer in high potential, the each metalwork adjacent with coil is as metal shell, metal core bar, metal axle sleeve and be magnetostaticly extremely all in floating potential, electric clearance between moving contacting plate and coil equals former electric clearance and adds the electric clearance (insulating part in accompanying drawing 3 increases electric clearance=b+c+d newly) that the insulating part newly increased increases, thus the dielectric withstanding voltage that improve between coil and contact point, increase substantially the reliability of product.
Accompanying drawing explanation
Fig. 1 is the structural representation of conventional seals type D.C. contactor;
The cut-away section structural representation that Fig. 2 is metal core bar described in conventional seals type D.C. contactor and moving contacting plate;
Fig. 3 is structural representation of the present invention;
Fig. 4 is the cut-away section structural representation of metal core bar of the present invention and moving contacting plate.
By reference to the accompanying drawings, make the following instructions:
101---quiet contact point 102---moving contacting plate
103---metal core bars 104---move iron core
105---metal axle sleeve 106---metal shell
107---coil 108---electric clearance
109---jump ring 110---spring
111---pad 112---magnetostatic pole
1---metal shell 2---quiet contact point
3---moving contacting plate 4---metal core bar
5---insulating part 6---metallic support
7---springs 8---move iron core
9---metal axle sleeve 10---returning spring
11---coil 12---magnetostatic pole
31---groove 51---is protruding
41---annular groove 42---step
Embodiment
By reference to the accompanying drawings, elaborate to the present invention, but protection scope of the present invention is not limited to following embodiment, the simple equivalence namely in every case done with the present patent application the scope of the claims and description changes and modifies, and all still belongs within patent covering scope of the present invention.
As shown in Figure 3, a kind of closed type D.C. contactor, comprise the quiet contact point 2 be located in closed type metal shell 1, moving contacting plate 3, metal core bar 4 and transmission mechanism, wherein drive mechanism comprises dynamic iron core 8, metal axle sleeve 9, returning spring 10, coil 11 and magnetostatic pole 12.Transmission mechanism is turned on or off to make moving contacting plate and two quiet contact points along its axis direction reciprocating motion for driving the bottom of metal core bar simultaneously, thus realizes the beginning function of D.C. contactor.
Traditional metal core bar is changed to a combined structural member by sealing type D.C. contactor, namely insulating part 5 is added, the upper end embedded with metal support 6 of insulating part 5, bottom embedded with metal core bar 4, moving contacting plate is connected on metallic support, thus metal core bar and metallic support is separated by insulating part.Such vibrational power flow makes moving contacting plate no longer in metal shell 1 conducting, metal shell is no longer in high potential, the each metalwork adjacent with coil 11 such as metal shell 1, metal core bar 4, metal axle sleeve 9 and magnetostatic pole 12 are all in floating potential, electric clearance between moving contacting plate and coil equals former electric clearance and adds the electric clearance (insulating part in accompanying drawing 3 increases electric clearance=b+c+d newly) that the insulating part newly increased increases, thus the dielectric withstanding voltage that improve between coil and contact point, increase substantially the reliability of product.
The shape of the moving contacting plate of sealing type D.C. contactor is also different from tradition with fixed form, is fixedly changed to by original endoporus peripheral fixing, and eliminates the jump ring of fixing moving contacting plate.As shown in Figure 4, sealing type D.C. contactor adopts the metallic support of a quadra structure to be connected with moving contacting plate, moving contacting plate is movably placed in the upper space of quadra structure of this metallic support, be embedded in bottom metallic support in the upper end of insulating part, spring 7 is set between the downside of moving contacting plate and the upper side of insulating part.Adopt quadra structural design, the active force of spring can be made only to act on metal framework, can effectively prevent spring from being backed down from insulating part by metallic support.
In order to reduce the volume of insulating part as much as possible and improve the insulation property of insulating part, the downside of moving contacting plate of the present invention adopts recessed setting, namely arranges groove 31 in the downside of moving contacting plate, and the upper end of spring is fixed in this groove 31.Meanwhile, be provided with protruding 51 at the upper side of insulating part, the bottom of spring is sheathed in this projection, and the lower end of spring can be fixed with insulating part.
In order to improve the bonding strength of insulating part and metal core bar, be provided with annular groove 41 in the periphery, upper end of metal core bar.In addition, the part be positioned at outside insulating part downside of metal core bar is provided with step 42, and this step, higher than insulating part, can prevent impact force action on insulating part, thus improves the life-span of insulating part.
As can be seen here, the present invention, by the setting of said structure, can improve the electric clearance between coil and contact point and dielectric withstanding voltage, thus improves the reliability of contactor, significantly reduces the risk that contactor forceful electric power seals in control loop.
Claims (10)
1. a closed type D.C. contactor, comprise the quiet contact point (2) be located in closed type metal shell (1), moving contacting plate (3), metal core bar (4) and transmission mechanism, this moving contacting plate is connected with the upper end of metal core bar, this transmission mechanism can drive the bottom of this metal core bar to be turned on or off along its axis direction reciprocating motion to make this moving contacting plate and two quiet contact points simultaneously, it is characterized in that: be provided with insulating part (5) between the upper end of described metal core bar and described moving contacting plate and this metal core bar and described moving contacting plate insulated isolate.
2. closed type D.C. contactor according to claim 1, it is characterized in that: the upper end of described insulating part is inlaid with metallic support (6), this metallic support is flexibly connected with described moving contacting plate, and the bottom of this insulating part is fixedly connected with the upper end of described dynamic metal core bar.
3. closed type D.C. contactor according to claim 2, it is characterized in that: described metallic support is enclosed type frame structure, the bottom of this metallic support is embedded in the upper end of described insulating part, described moving contacting plate is placed in the upper space of enclosed type frame structure of this metallic support, is provided with spring (7) between the downside of this moving contacting plate and the upper side of described insulating part.
4. closed type D.C. contactor according to claim 3, is characterized in that: the downside of described moving contacting plate is provided with groove (31), and the upper end of described spring is fixed in this groove.
5. closed type D.C. contactor according to claim 3, is characterized in that: the upper side of described insulating part is provided with projection (51), and the bottom of described spring is sheathed in this projection.
6. closed type D.C. contactor according to claim 5, is characterized in that: lower end and the described insulating part of described spring are connected.
7. closed type D.C. contactor according to claim 3, is characterized in that: described metallic support is square frame structure.
8. closed type D.C. contactor according to claim 2, is characterized in that: the periphery, upper end of described metal core bar is provided with annular groove (41).
9. closed type D.C. contactor according to claim 2, is characterized in that: the part be positioned at outside described insulating part downside of described metal core bar is provided with step (42).
10. closed type D.C. contactor according to claim 1, is characterized in that: described drive mechanism comprises dynamic iron core (8), metal axle sleeve (9), returning spring (10), coil (11) and magnetostatic pole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510427424.0A CN105070591A (en) | 2015-07-20 | 2015-07-20 | Sealed-type DC contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510427424.0A CN105070591A (en) | 2015-07-20 | 2015-07-20 | Sealed-type DC contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105070591A true CN105070591A (en) | 2015-11-18 |
Family
ID=54499934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510427424.0A Pending CN105070591A (en) | 2015-07-20 | 2015-07-20 | Sealed-type DC contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105070591A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424871A (en) * | 2017-07-06 | 2017-12-01 | 湖北中生汽车电器有限公司 | A kind of automobile start and preheating relay |
| CN107622917A (en) * | 2017-10-13 | 2018-01-23 | 三友联众集团股份有限公司 | A kind of electromagnetic relay |
| CN107871644A (en) * | 2017-09-29 | 2018-04-03 | 浙江宏舟新能源科技有限公司 | The HVDC relay and its assembly method of a kind of high creep age distance |
| CN108711537A (en) * | 2018-08-09 | 2018-10-26 | 苏州安来强电子科技有限公司 | The movable contact structure and movable contact system of D.C. contactor |
| WO2022230516A1 (en) * | 2021-04-28 | 2022-11-03 | パナソニックＩｐマネジメント株式会社 | Contact device and electromagnetic relay |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1242586A (en) * | 1998-07-21 | 2000-01-26 | 易通公司 | Fault current tolerable contactor |
| KR101072627B1 (en) * | 2010-10-15 | 2011-10-13 | 엘에스산전 주식회사 | Movable contact assembly of electromagnetic switch |
| WO2013117468A1 (en) * | 2012-02-09 | 2013-08-15 | Tyco Electronics Amp Gmbh | Switch contact subassembly having a switch contact bridge and contact bridge retention member |
| WO2013153799A1 (en) * | 2012-04-09 | 2013-10-17 | パナソニック株式会社 | Contact device spring load adjustment structure and contact device spring load adjustment method |
| CN203588940U (en) * | 2013-10-23 | 2014-05-07 | 天水二一三电器有限公司 | Sealed type DC contactor |
| CN204760321U (en) * | 2015-07-20 | 2015-11-11 | 昆山国力真空电器有限公司 | Canned type direct current contactor |
-
2015
- 2015-07-20 CN CN201510427424.0A patent/CN105070591A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1242586A (en) * | 1998-07-21 | 2000-01-26 | 易通公司 | Fault current tolerable contactor |
| KR101072627B1 (en) * | 2010-10-15 | 2011-10-13 | 엘에스산전 주식회사 | Movable contact assembly of electromagnetic switch |
| WO2013117468A1 (en) * | 2012-02-09 | 2013-08-15 | Tyco Electronics Amp Gmbh | Switch contact subassembly having a switch contact bridge and contact bridge retention member |
| WO2013153799A1 (en) * | 2012-04-09 | 2013-10-17 | パナソニック株式会社 | Contact device spring load adjustment structure and contact device spring load adjustment method |
| CN203588940U (en) * | 2013-10-23 | 2014-05-07 | 天水二一三电器有限公司 | Sealed type DC contactor |
| CN204760321U (en) * | 2015-07-20 | 2015-11-11 | 昆山国力真空电器有限公司 | Canned type direct current contactor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424871A (en) * | 2017-07-06 | 2017-12-01 | 湖北中生汽车电器有限公司 | A kind of automobile start and preheating relay |
| CN107871644A (en) * | 2017-09-29 | 2018-04-03 | 浙江宏舟新能源科技有限公司 | The HVDC relay and its assembly method of a kind of high creep age distance |
| CN107871644B (en) * | 2017-09-29 | 2020-08-28 | 浙江宏舟新能源科技有限公司 | High-voltage direct-current relay with high creepage distance and assembly method thereof |
| CN107622917A (en) * | 2017-10-13 | 2018-01-23 | 三友联众集团股份有限公司 | A kind of electromagnetic relay |
| CN108711537A (en) * | 2018-08-09 | 2018-10-26 | 苏州安来强电子科技有限公司 | The movable contact structure and movable contact system of D.C. contactor |
| CN108711537B (en) * | 2018-08-09 | 2024-03-19 | 苏州安来强电子科技有限公司 | Movable contact structure and movable contact system of direct current contactor |
| WO2022230516A1 (en) * | 2021-04-28 | 2022-11-03 | パナソニックＩｐマネジメント株式会社 | Contact device and electromagnetic relay |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 215301 West Lake Road, Kunshan Development Zone, Jiangsu, China, No. 28, No. Applicant after: Kunshan national electronic Polytron Technologies Inc Address before: 215301 Kunshan, Jiangsu Development Zone, the Yangtze River Road, No. 179, No. Applicant before: Kunshan Guoli Vacuum Electric Co., Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151118 |
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| RJ01 | Rejection of invention patent application after publication |