CN203644595U - Switch apparatus contact device - Google Patents
Switch apparatus contact device Download PDFInfo
- Publication number
- CN203644595U CN203644595U CN201320871735.2U CN201320871735U CN203644595U CN 203644595 U CN203644595 U CN 203644595U CN 201320871735 U CN201320871735 U CN 201320871735U CN 203644595 U CN203644595 U CN 203644595U
- Authority
- CN
- China
- Prior art keywords
- contact
- arc
- bridge
- arc extinguishing
- guide rod
- 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.)
- Expired - Lifetime
Links
- 230000003068 static effect Effects 0.000 claims abstract description 27
- 230000000712 assembly Effects 0.000 abstract 3
- 238000000429 assembly Methods 0.000 abstract 3
- 238000010891 electric arc Methods 0.000 description 31
- 230000000694 effects Effects 0.000 description 6
- 238000002679 ablation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Images
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a switch apparatus contact device and belongs to the technical field of low voltage electrical apparatuses. The switch apparatus contact device comprises a shell, two static contact assemblies, two groups of arc extinguishing gate pieces, an arc striking plate, and a movable bridge-shaped contact, wherein the two static contact assemblies are arranged inside a cavity and located at the top of the cavity; each of the two static contact assemblies comprises a U-type guide rod and a static contact; the two groups of arc extinguishing gate pieces are respectively arranged inside the cavity and located at two sides of the cavity; two ends of the arc striking plate extend respectively towards the direction of the two groups of arc extinguishing gate pieces and extend at least into the two groups of arc extinguishing gate pieces; and the movable bridge-shaped contact comprises a bridge-shaped guide rod and two moving contacts, and arc running space is formed between each arc extinguishing gate piece group and the moving contact. The switch apparatus contact device is characterized in that when the moving contact is in an opening state corresponding to the static contact, the first distance L between the end part of the bridge-shaped guide rod and the end part of the arc extinguishing gate piece, close to one side of the movable bridge-shaped contact, of the corresponding one group of arc extinguishing gate pieces is larger than the second distance H between the bridge-shaped guide rod and the arc striking plate. The phenomenon that arc roots stop for a long time on the contacts to cause the contacts to be excessively ablated to reduce the electrical service life can be avoided.
Description
Technical field
The utility model belongs to low voltage electrical apparatus technology field, is specifically related to a kind of contact apparatus of device for switching.
Background technology
The contact apparatus of device for switching generally includes a housing, on housing, form and have cavity, cavity can be one, also can be not only parallel but also that mutually separate a plurality of, in pedestal chamber, in pluggable mode, electrode group is set, electrode group comprise fixed contact (also claiming fixed contact), match with fixed contact and corresponding to movable bridge-shaped contact (also claiming moving contact) and the arc extinguishing grid pieces assembly of fixed contact below.
Along with the increase of electric current, arc energy when device for switching disjunction is corresponding increase also, but switch contact arc-control device in prior art cannot reach the breaking capacity of expection.The increase of arc energy affects breaking capacity reason: between dynamic and static contact and the region at arc extinguishing grid pieces group place, exist and run arc space, in break-make normal circuit or while cut-offfing faulty circuit, the electric arc producing when dynamic and static contact is scolded out each other enters arc extinguishing grid pieces group through this race arc space, by arc extinguishing grid pieces group, electric arc cutting is realized to arc extinguishing.But, because moving contact is to the race arc distance of arc extinguishing grid pieces group from necessarily, in the time that under the effect of electric arc at electromagnetic field, electric arc is stretched, electric arc easily contacts apart from its nearest arc extinguishing grid pieces, electric arc is due to the obstruction of arc extinguishing grid pieces, cannot make electric arc be continued to elongate, even hinder electric arc and enter arc extinguishing grid pieces assembly, thereby cause electric arc fully not cut by arc extinguishing grid pieces assembly in time and reduce the climbing of arc voltage, the following unfavorable factor of final initiation: the one, cause electric arc arc root to increase in the time of staying at contact place, cause the excessive ablation in contact and affect electrical endurance, the 2nd, the prolongation (also can claim that transfer velocity is slow) because of the arc transfer time while cut-offfing fault current reduces current limiting performance, causes that arcing energy increases suddenly, exists disjunction unsuccessfully to jeopardize the anxiety of safety.
In view of above-mentioned prior art, be necessary rational modification in addition, the applicant has done useful design for this reason, and has formed technical scheme described below.
Summary of the invention
Task of the present utility model is to provide a kind of electric arc that is conducive to use to the transfer of arc extinguishing grid pieces assembly region the contact apparatus of avoiding using because of pitting of contacts reduction electrical endurance the device for switching of guaranteeing the reliable effect of cut-offfing fault current fast from the position of moving contact.
Task of the present utility model completes like this, a kind of contact apparatus of device for switching, comprise housing and be arranged at two static contact components in the cavity on housing, two described static contact components not only left and right are corresponding but also keep each other spacing and be arranged in described cavity and be positioned at the top of cavity, and these two static contact components respectively comprise U-shaped guide rod and are arranged on the fixed contact on U-shaped guide rod; Be separately positioned on two groups of arc extinguishing grid pieces of both sides in cavity and that be positioned at cavity; One is placed in the run-on tab of the middle position of described cavity bottom, and these run-on tab two ends are extended and at least extend in two groups of arc extinguishing grid pieces towards the direction of described two groups of arc extinguishing grid pieces respectively; Match with a described static contact component and movable bridge-shaped contact arranging that slides, this movable bridge-shaped contact comprises bridge-type guide rod and distinguishes two corresponding moving contacts with two fixed contacts, between described every group of arc extinguishing grid pieces and moving contact, form and have the arc space of race, feature is: when described moving contact is with respect to fixed contact during in gate-dividing state, the end of described bridge-type guide rod is greater than the second distance H between bridge-type guide rod and run-on tab with one group of corresponding arc extinguishing grid pieces near the first distance L of the arc extinguishing grid pieces end of a side of movable bridge-shaped contact.
In a specific embodiment of the present utility model, in described cavity, be also provided with contact support and spring support and spring, described bridge-type guide rod is located in contact and supports; Described spring support one end is fixed on described run-on tab, and the other end is placed in contact support; Described spring one end is set on spring support, and the other end is resisted against on bridge-type guide rod.
The utility model is owing to having adopted said structure, thereby in the time that moving contact and fixed contact are opened, moving, when the electric arc producing between fixed contact is stretched to length D under the effect of electromagnetic field, because the end of bridge-type guide rod is greater than the second distance H between bridge-type guide rod and run-on tab with one group of corresponding arc extinguishing grid pieces near the first distance L of the arc extinguishing grid pieces leg end of a side of movable bridge-shaped contact, electric arc can be by Rapid stretching, and electric arc is not subject to the obstruction of arc extinguishing grid pieces, until the length D of electric arc is greater than fixed contact to the 3rd during apart from S of run-on tab, electric arc arc root on the end of bridge-type guide rod will jump to run-on tab, thereby avoid causing that because of electric arc arc root long-time stop on contact the excessive ablation in contact reduces electrical endurance.
Brief description of the drawings
Fig. 1 is the stereochemical structure exploded view of the contact apparatus of the utility model device for switching.
Fig. 2 is the contact apparatus schematic diagram of electric arc in the time of formation stages.
Fig. 3 is the amplification principle figure of Fig. 2.
Fig. 4 is electric arc contact apparatus schematic diagram while being about to enter arc extinguishing grid pieces.
Embodiment
Refer to Fig. 1, a kind of contact apparatus of device for switching comprises housing 1 and is arranged on the first fixture 12 and the second fixture 13 and the spring 14 at housing 1 back side, the first fixture 12 and the second fixture 13 and spring 14 are for the installation of device for switching body, can be expressly understood by those of ordinary skill in the art completely this, thereby repeat no more.On housing 1, form and have at least one cavity 11, in cavity 11, be equipped with two static contact components 2, movable bridge-shaped contact 3, two groups of arc extinguishing grid pieces 4, run-on tab 5, contact support 7 and spring support 8 and spring 9, taking illustrated location status as example, two static contact component 2 left and right are placed in cavity 11 accordingly, and be positioned at the top of cavity 11, two static contact components 2 are spaced from each other certain distance, contact support 7 is slided and is arranged between two static contact components 2, this contact support 7 has limited part 71, this limited part 71 is connected on housing 1, the position that moves up and down that contact support 7 is played guide effect and limited contact support 7, two static contact components 2 respectively comprise U-shaped guide rod 21 and are arranged on the fixed contact 22 on U-shaped guide rod 21, described U-shaped guide rod 21 comprises the first guide rod support arm 211 and the second guide rod support arm 212, the second guide rod support arm 212 forms towards one end of aforementioned fixed contact 22 bending at the first guide rod support arm 211, and corresponding to the below of the first guide rod support arm 211, aforesaid fixed contact 22 is fixed on the side of the second guide rod support arm 212 towards movable bridge-shaped contact 3, aforesaid movable bridge-shaped contact 3 matches with static contact component 2, comprise bridge-type guide rod 31, the contact that this bridge-type guide rod 31 is arranged between two static contact components 2 is supported in 7, bridge-type guide rod 31 two ends are respectively arranged with 32, two moving contacts 32 of two moving contacts and match and form main circuit loop with corresponding fixed contact 22, two groups of described arc extinguishing grid pieces 4 are separately positioned on cavity 11 both sides, described run-on tab 5 is placed in cavity 11 bottoms, in the middle of this run-on tab 5, is provided with depressed part, and for fixing described spring support 8, the bottom of one group of arc extinguishing grid pieces 4 is extended and at least extended to respectively at its two ends towards the direction of one group of corresponding arc extinguishing grid pieces 4, described spring support 8 one end are fixed on run-on tab 5, and the other end is placed in contact and supports in 7, described spring 9 one end are set on spring support 8, and the other end is resisted against on bridge-type guide rod 31.
Ask for an interview Fig. 2 and continue to consult Fig. 1, aforesaid movable bridge-shaped contact 3 is slidably arranged between static contact component 2 and run-on tab 5, it is the both sides that moving contact 32 and fixed contact 22 are positioned at contact support 7 that aforesaid two groups of arc extinguishing grid pieces 4 correspond respectively to counterpart contact combination, and be set up in respectively between two second guide rod support arms 212 and run-on tab 5, between the moving contact 32 of every group of arc extinguishing grid pieces 4 and pairing and fixed contact 22 combinations, there is race arc space 6, i.e. arc transfer passage area.As shown in Figure 2, in the time of device for switching separating brake, when being subject to the operating mechanism (not shown) of device for switching to promote movable bridge-shaped contact 3, contact support 7 moves, and overcome the spring force of spring 9, moving contact 32 is separated with fixed contact 22, contact apparatus is in gate-dividing state, the moving contact 32 of movable bridge-shaped contact 3 remains on open position with respect to fixed contact 22, in the time that device for switching closes a floodgate, operating mechanism removes the power acting in contact support 7, moving contact contacts with fixed contact under the spring-force driven dual of spring 9, contact apparatus is in "on" position, movable bridge-shaped contact 3 remains on closing position.Level interval between arc extinguishing grid pieces 4 as shown in Figure 3 and counterpart contact combination, at the contact apparatus of device for switching, during in gate-dividing state, now the end of described bridge-type guide rod 31 is greater than the second distance H between bridge-type guide rod 31 and run-on tab 5 with corresponding one group of arc extinguishing grid pieces 4 near the first distance L of the arc extinguishing grid pieces end 42 of a side of movable bridge-shaped contacts 3.
Ask for an interview Fig. 3 and Fig. 4, when aforesaid device for switching is during from "on" position to gate-dividing state, while cut-offfing circuit, between the moving contact 32 of pairing and fixed contact 22, produce electric arc, electric arc is ceaselessly stretched under the effect of electromagnetic force, when last movable bridge-shaped contact 3 arrives open position, like this electric arc 100 can run be not subject in arc space 6 arc extinguishing grid pieces impact and by Rapid stretching to curve-like as shown in Figure 3, one section of arc length D1(Fig. 3 that the length D of electric arc 100 can be approximately above-below direction shows) and one section of arc length D2(Fig. 3 of left and right directions show) and, the end of bridge-type guide rod 31 is L with corresponding one group of arc extinguishing grid pieces 4 near the first distance of the arc extinguishing grid pieces leg end of a side of movable bridge-shaped contact 3, second distance between bridge-type guide rod 31 and run-on tab 5 is H, static contact component 2 is S to the 3rd distance of run-on tab 5, wherein the 3rd apart from S be static contact component 2 to movable bridge-shaped contact 3 apart from S1 and movable bridge-shaped contact 3 to run-on tab 5 apart from S2's and, in the time of that section of the electric arc 100 above-below directions arc extinguishing grid pieces leg end near a side of movable bridge-shaped contact 3 (not shown this position), due to the curved shape of electric arc, therefore D2>L, D1>S1, H=S2 and due to L>H, D2>S2, and S=S1+ S2, therefore D=D1+D2>S, the in the situation that of D>S, electric arc arc root is easily directly jumped to run-on tab 5 from the end of bridge-type guide rod 31 fast, the electric arc arc root of the other end end of bridge-type guide rod 31 is transferred on run-on tab 5 too as a same reason, now current circuit is for as shown in Figure 4, circuit passes through left electric arc 100 to run-on tab 5 from left static contact component 2, again from run-on tab 5 to right electric arc 100 to right static contact component 2, thereby avoid causing that because of electric arc arc root long-time stop on movable bridge-shaped contact 3 the excessive ablation in contact reduces electrical endurance, electric arc enters one group of corresponding arc extinguishing grid pieces 4 afterwards, being beneficial to arc extinguishing grid pieces is fully cut arc energy in time, reach the effect of quick extinguish arcs.
Claims (2)
1. the contact apparatus of a device for switching, comprise housing (1) and be arranged at two static contact components (2) in the cavity (11) on housing (1), not only left and right correspondence but also keep each other spacing and be arranged in described cavity (11) and be positioned at the top of cavity (11) of described two static contact components (2), these two static contact components (2) respectively comprise U-shaped guide rod (21) and are arranged on the fixed contact (22) on U-shaped guide rod (21), be separately positioned on two groups of arc extinguishing grid pieces (4) of both sides in cavity (11) and that be positioned at cavity (11), one is placed in the run-on tab (5) of the middle position of described cavity (11) bottom, and this run-on tab (5) two ends are extended and at least extend in two groups of arc extinguishing grid pieces (4) towards the direction of described two groups of arc extinguishing grid pieces (4) respectively, match with described static contact component (2) and movable bridge-shaped contact (3) arranging that slides, this movable bridge-shaped contact (3) comprises bridge-type guide rod (31) and two moving contacts (32) corresponding with two fixed contacts (22) difference, between described every group of arc extinguishing grid pieces (4) and moving contact (32), form and have the arc space of race (6), it is characterized in that: when described moving contact (32) is with respect to fixed contact (22) during in gate-dividing state, the end of described bridge-type guide rod (31) is greater than the second distance H between bridge-type guide rod (31) and run-on tab (5) with corresponding one group of arc extinguishing grid pieces (4) near the first distance L of the arc extinguishing grid pieces end of a side of movable bridge-shaped contact (3).
2. the contact apparatus of device for switching according to claim 1, it is characterized in that being also provided with contact support (7) and spring support (8) and spring (9) in described cavity (11), described bridge-type guide rod (31) is located in contact support (7); It is upper that described spring support (8) one end is fixed on described run-on tab (5), and the other end is placed in contact support (7); It is upper that described spring (9) one end is set in spring support (8), and the other end is resisted against on bridge-type guide rod (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871735.2U CN203644595U (en) | 2013-12-27 | 2013-12-27 | Switch apparatus contact device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871735.2U CN203644595U (en) | 2013-12-27 | 2013-12-27 | Switch apparatus contact device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203644595U true CN203644595U (en) | 2014-06-11 |
Family
ID=50875821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320871735.2U Expired - Lifetime CN203644595U (en) | 2013-12-27 | 2013-12-27 | Switch apparatus contact device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203644595U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320974A (en) * | 2017-02-20 | 2018-07-24 | 上海舒森电子科技有限公司 | Sound contact structure and rotary switch |
| CN108417429A (en) * | 2018-03-20 | 2018-08-17 | 浙江正泰电器股份有限公司 | Electrical rotary switch |
| CN109473307A (en) * | 2019-01-09 | 2019-03-15 | 常熟开关制造有限公司(原常熟开关厂） | A kind of contact of breaker arc-control device and its breaker |
-
2013
- 2013-12-27 CN CN201320871735.2U patent/CN203644595U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320974A (en) * | 2017-02-20 | 2018-07-24 | 上海舒森电子科技有限公司 | Sound contact structure and rotary switch |
| CN108417429A (en) * | 2018-03-20 | 2018-08-17 | 浙江正泰电器股份有限公司 | Electrical rotary switch |
| CN108417429B (en) * | 2018-03-20 | 2024-05-17 | 浙江正泰电器股份有限公司 | Rotary electric switch |
| CN109473307A (en) * | 2019-01-09 | 2019-03-15 | 常熟开关制造有限公司(原常熟开关厂） | A kind of contact of breaker arc-control device and its breaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105097374B (en) | A kind of breaker beneficial to the quick movement of electric arc and elongation | |
| CN105765684B (en) | Gas circuit breaker | |
| CN203644595U (en) | Switch apparatus contact device | |
| CN102044388A (en) | Static contact structure of moulded case circuit breaker | |
| CN104810222B (en) | The arc-chutes of a kind of fast arc extinction and apply the miniaturization chopper of these arc-chutes | |
| CN106098438A (en) | One has high breaking capacity arc quenching system | |
| CN204215989U (en) | A kind of circuit breaker being beneficial to electric arc fast moving and elongation | |
| CN203644593U (en) | Switch apparatus contact device | |
| CN107622908B (en) | Movable double-loop contact structure and vacuum arc-extinguishing chamber | |
| CN106531545A (en) | High-voltage vacuum circuit breaker | |
| CN106024495A (en) | Contact device, arc-extinguishing chamber using the same, and circuit breaker | |
| CN107359081B (en) | A kind of method and switching device of motor driven bridging contact on-load switch | |
| CN201918340U (en) | Small-sized circuit breaker | |
| CN204045531U (en) | A kind of energy-saving miniature circuit breaker | |
| CN102290278B (en) | Arc striking device for electric switch equipment | |
| CN104201074A (en) | Energy-saving miniature circuit breaker | |
| CN204375682U (en) | Arc quenching chamber structure in a kind of breaker of plastic casing | |
| CN210110588U (en) | Arc extinguishing grid sheet layout structure of arc extinguishing chamber | |
| CN202454484U (en) | Low-bouncing solid-sealed polar pole | |
| CN103367024B (en) | The two contact of vacuum interrupter | |
| CN202736770U (en) | Ultrahigh-voltage arc-resistant contact | |
| CN106486302B (en) | A kind of motor starting device | |
| CN202905520U (en) | Device capable of preventing contacts of disconnector from being burned and damaged by electric arc | |
| CN204332841U (en) | A kind of double-contact formula relay | |
| CN202996745U (en) | A novel arc extinction structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |
|
| CX01 | Expiry of patent term |