CN208225805U - A kind of DC relay can be improved arc extinguishing ability - Google Patents
A kind of DC relay can be improved arc extinguishing ability Download PDFInfo
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- CN208225805U CN208225805U CN201820738706.1U CN201820738706U CN208225805U CN 208225805 U CN208225805 U CN 208225805U CN 201820738706 U CN201820738706 U CN 201820738706U CN 208225805 U CN208225805 U CN 208225805U
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- arc extinguishing
- cover
- static contact
- magnet steel
- static
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Abstract
The utility model discloses a kind of DC relays that can be improved arc extinguishing ability, including accent cover directed downwardly, static contact, movable contact spring, promotion bar assembly and yoke plate；Two static contacts are separately fixed at the upper end of cover and protrude into the intracavitary of cover, and the yoke plate is connected to the bottom end of cover and surrounds a cavity with cover；Movable contact spring passes through catch bar component Configuration in the cavity and is in the top of yoke plate, and the both ends of movable contact spring are matched with two static contacts respectively；In the cavity, the arc extinguishing insulating boot of an accent upward is also equipped on yoke plate, the bottom of the cover chamber of arc extinguishing insulating boot is additionally provided with grid slot.The utility model can be improved the arc extinguishing ability of product and increase electrical creepage distance, to improve the electric life ability of product.
Description
Technical field
The utility model relates to a kind of DC relays, more particularly to a kind of direct current relay that can be improved arc extinguishing ability
Device.
Background technique
Relay is a kind of electronic control device, it have control system (also known as input circuit) and by control system (again
Claim output loop), it is usually applied in automatic control circuit, it is actually to go the one of control larger current with lesser electric current
Kind " automatic switch ".Therefore the effects of playing automatic adjustment, safeguard protection, conversion circuit in circuit.
DC relay is one of relay, and existing DC relay mostly uses greatly movable contact spring Direct Action Type (also referred to as
For solenoid Direct Action Type) scheme, the contact part of the DC relay includes two static contacts and a dynamic component, moves component packet
It includes spring part and pushes bar assembly, dynamic spring part is made of the movable contact of movable contact spring and movable contact spring both ends, and movable contact spring is direct acting
Formula, when the movable contact at movable contact spring both ends is in contact with two static contacts respectively, electric current is flowed by one of static contact, is passed through
It is flowed out after movable contact spring from another static contact；The dynamic spring part is installed in the one end for pushing bar assembly, pushes the another of bar assembly
End is then connected with dynamic iron core, when coil access electric current and when moving upwards dynamic iron core, dynamic iron core drive push bar assembly to
Upper movement makes the movable contact at movable contact spring both ends be in contact respectively with two static contacts, and when coil turn-off current, dynamic iron core is by multiple
The effect of position spring moves downward, and dynamic iron core, which then drives, pushes bar assembly to move down, and makes the movable contact and two at movable contact spring both ends
A static contact mutually separates respectively.This DC relay of the prior art, contact part are usually accommodated in ceramic shield, move spring
It between part and magnetic circuit part is separated by yoke plate, that is to say, that dynamic spring part is the top for being located at yoke plate, can also be with
Say it is that an arc extinguishing chamber is defined by ceramic shield and yoke plate, when relay is during electric life, if there is big electric arc
When, electric arc elongates the metal that can be got on yoke plate and yoke edges of boards, to make service life initial failure, moreover, contact is evapotranspired
The metal of splashing can be fallen on conductive yoke plate, so that electrical creepage distance is reduced, when splash falls into the fortune of yoke plate
When dynamic relief hole, it can also cause stuck phenomenon, prevent component that can not move and cause product from using.
Utility model content
The purpose of the utility model is to overcome the deficiencies of the prior art, provide a kind of direct current that can be improved arc extinguishing ability
Relay is improved by structure, be can be improved the arc extinguishing ability of product and is increased electrical creepage distance, to improve the electricity of product
Life capacity.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of direct current that can be improved arc extinguishing ability
Relay, including accent cover directed downwardly, static contact, movable contact spring, promotion bar assembly and yoke plate；Two static contacts are fixed respectively
Cover upper end and protrude into the intracavitary of cover, the yoke plate is connected to the bottom end of cover and surrounds a cavity with cover；It is dynamic
Reed passes through catch bar component Configuration in the cavity and is in the top of yoke plate, and the both ends of movable contact spring are quiet with two respectively
Contact matches；In the cavity, the arc extinguishing insulating boot of an accent upward, the cover of arc extinguishing insulating boot are also equipped on yoke plate
The bottom of chamber is additionally provided with grid slot, and grid slot at least corresponds to the edge matched at the both ends of movable contact spring with two static contacts
Underface.
The distance between both ends end edge of the movable contact spring is less than the distance between two static contact outer ledges.
The top on the both ends end edge of the movable contact spring is set as arc, and the bottom of described two static contact outer ledges is also set as
Arc.
The periphery that the bottom end of the cover also passes through a frame piece and yoke plate is mutually fixed；The periphery of the arc extinguishing insulating boot is leaned on
The nearly frame piece.
Outside the cover, it is also equipped with the place of matching of two static contacts for arc extinguishing at the both ends for corresponding to movable contact spring
Magnet steel.
Four blocks of magnet steel are housed outside the cover, wherein two blocks of magnet steel are in the outside of two static contact lines, in addition two pieces
Magnet steel is in the both sides of two static contact lines respectively and is in be dislocatedly distributed to correspond respectively to a static contact.
The center line of two blocks of magnet steel in the outside for being in two static contact lines is in relative to two static contact lines
Bias profile, the center line of two blocks of magnet steel on the both sides for being in two static contact lines are also in inclined with corresponding static contact
Set distribution；The middle part of the arc extinguishing insulating boot is equipped with circular through hole and is passed through with adapting to the promotion bar assembly, circular through hole
Both sides are respectively equipped with multiple half frame shape grid slots and corresponding with the position of two static contacts difference.
Four blocks of magnet steel are housed, four blocks of magnet steel are in the both sides of two static contact lines and respectively respectively with two outside the cover
A static contact is corresponding.
The line at the center of two blocks of magnet steel corresponding to the same static contact passes through the center of corresponding static contact；It is described
The middle part of arc extinguishing insulating boot is equipped with square through hole and is passed through with adapting to the promotion bar assembly, and the both sides of square through hole are respectively equipped with
Multiple parallel gate cells are simultaneously corresponding with the position of two static contacts difference.
A magnetic conductive part is also connected between two blocks of magnet steel corresponding to the same static contact.
Compared with prior art, the beneficial effects of the utility model are:
1, it is exhausted to be also equipped with the arc extinguishing of an accent upward due to using in the cavity for the utility model on yoke plate
Edge cover, the bottom of the cover chamber of arc extinguishing insulating boot are additionally provided with grid slot.The utility model passes through portion in the cavity, increases on yoke plate
One arc extinguishing insulating boot, and arc extinguishing insulating boot is arranged to lattice-shaped, and grid slot at least corresponds at the both ends and two of movable contact spring
The underface at the edge that a static contact matches, the structure can effective elongating arc length, improve cavity arc extinguishing space, and
Yoke plate and neighbouring metal can be got to avoid electric arc and can play the role of certain arc-chute, improve the electric life energy of product
Power.
2, the utility model is due to being designed to less than two stationary contacts using by the distance between the both ends end edge of movable contact spring
The distance between head outer ledge, and the top on the both ends end edge of movable contact spring is set as arc, by two static contact outer side edges
The bottom of edge is also set as arc, and the electric arc generated between sound contact is enabled effectively to be guided to the grid of arc extinguishing insulating boot
In slot, to improve arc extinguishing ability.
3, matching of the utility model due to using outside cover, at the both ends and two static contacts for corresponding to movable contact spring
The magnet steel for arc extinguishing is also equipped at conjunction.This structure of the utility model, when relay is under the action of external arc extinguishing magnetic field,
Further speed up with elongate connect, breaking arc.The electric arc that the bigger life span of load requirement generates just is more difficult to disjunction, when outer
Set magnetic field height it is enough when, electric arc will be elongated to the arc extinguishing insulating boot on arc extinguishing grid, to further speed up electric arc disjunction.
4, the utility model is respectively equipped with multiple half frames on the both sides of circular through hole due to using in arc extinguishing insulating boot
Shape grid slot is simultaneously corresponding with the position of two static contacts difference, or is respectively equipped on the both sides of square through hole multiple parallel
Grid slot is simultaneously corresponding with the position of two static contacts difference.This structure of the utility model, portion in the cavity, by yoke
Increase an arc extinguishing insulating boot on iron plate, arc extinguishing insulating boot is arranged grid slot, splatter object effectively can be isolated and be mentioned
High electrical creepage distance.
The utility model is described in further detail with reference to the accompanying drawings and embodiments；But a kind of energy of the utility model
The DC relay for enough improving arc extinguishing ability is not limited to the embodiment.
Detailed description of the invention
Fig. 1 is the top view of the embodiments of the present invention one；
Fig. 2 is the cross-sectional view of the part construction of the line A-A along Fig. 1；
Fig. 3 is the D structure schematic diagram of the arc extinguishing insulating boot of the embodiments of the present invention one；
Fig. 4 is the top view of the embodiments of the present invention two；
Fig. 5 is the cross-sectional view of the part construction of the line B-B along Fig. 4；
Fig. 6 is the D structure schematic diagram of the arc extinguishing insulating boot of the embodiments of the present invention two.
Specific embodiment
Embodiment one
Referring to shown in Fig. 1 to Fig. 3, a kind of DC relay can be improved arc extinguishing ability of the utility model, including chamber
The cover 1 of mouth down, movable contact spring 3, pushes bar assembly 4 and yoke plate 5 at static contact, and in the present embodiment, cover 1 is ceramic shield；It is quiet
Contact is two, i.e. static contact 21, static contact 22, static contact 21, static contact 22 is separately fixed at the upper end of ceramic shield 1 and protrudes into
Ceramic shield 1 it is intracavitary, the yoke plate 5 is connected to the bottom end of ceramic shield 1 and surrounds a cavity 10 with ceramic shield 1；Movable contact spring 3 is logical
The top for pushing the configuration of bar assembly 4 in the cavity 10 and being in yoke plate 5 is crossed, the both ends of movable contact spring 3 are quiet with two respectively
Contact 21,22 matches；In the cavity 10, the arc extinguishing insulating boot 6 of an accent upward, arc extinguishing are also equipped on yoke plate 5
The bottom of the cover chamber of insulating boot 6 is additionally provided with grid slot, and grid slot at least corresponds to both ends and the two static contact phases in movable contact spring 3
The underface of the outer ledge of cooperation.
In the present embodiment, the distance between both ends end edge of movable contact spring 3 is between less than two static contacts 21,22 outer ledges
Distance (i.e. the distance of 21 outer ledge of static contact to 22 outer ledge of static contact).
In the present embodiment, the top on the both ends end edge of movable contact spring 3 is set as arc 31, described two static contact outer ledges
Bottom is also set as arc, i.e. the bottom of 21 outer ledge of static contact is set as arc 211, and the bottom of 22 outer ledge of static contact is set as
Arc 221.
In the present embodiment, the periphery that the bottom end of ceramic shield 1 also passes through a frame piece 7 and yoke plate 5 is mutually fixed；The arc extinguishing is exhausted
The periphery of edge cover 6 is close to the frame piece 7.
Matching in the present embodiment, outside the ceramic shield 1, at the both ends and two static contacts 21,22 for corresponding to movable contact spring 3
The magnet steel 8 for arc extinguishing is also equipped at conjunction.
In the present embodiment, four blocks of magnet steel are housed outside the ceramic shield 1, wherein two blocks of magnet steel 81,82 are in two static contacts
The outside of line, magnet steel 81 are in the outside of static contact 21, and magnet steel 82 is in the outside of static contact 22, in addition two blocks of magnet steel 83,
84 are in the both sides of two static contact lines respectively and are in be dislocatedly distributed to correspond respectively to a static contact, that is, magnet steel 83 is right
Static contact 22 should be corresponded in static contact 21, magnet steel 84.
In the present embodiment, the center lines of two blocks of magnet steel 81,82 in the outside for being in two static contact lines relative to
Two static contact lines are in bias profile, the center line of two blocks of magnet steel 83,84 on the both sides for being in two static contact lines
It is also in bias profile with corresponding static contact, i.e., magnet steel 83 does not have face static contact 21, and magnet steel 84 does not have face static contact yet
22；The middle part of the arc extinguishing insulating boot 6 is equipped with circular through hole 61 and is passed through with adapting to the promotion bar assembly 4, circular through hole 61
Both sides be respectively equipped with multiple half frame shape grid slots 62 and corresponding with the position of two static contacts 21,22 difference.
In the present embodiment, a magnetic conductive part is also connected between two blocks of magnet steel corresponding to the same static contact, that is, magnet steel 81
It is connected with magnetic conductive part 91 between magnet steel 83, magnetic conductive part 92 is connected between magnet steel 82 and magnet steel 84.
A kind of DC relay can be improved arc extinguishing ability of the utility model uses the yoke in the cavity 10
The arc extinguishing insulating boot 6 of an accent upward is also equipped on iron plate 5, the bottom of the cover chamber of arc extinguishing insulating boot 6 is additionally provided with grid slot 62.
The utility model is by increasing an arc extinguishing insulating boot 6, and arc extinguishing insulating boot 6 is arranged to inside cavity 10 on yoke plate 5
Lattice-shaped, and the underface at at least corresponding edge matched at the both ends of movable contact spring 3 with two static contacts 21,22 of grid slot,
The structure can effective elongating arc length, improve cavity arc extinguishing space, and can be got to avoid electric arc yoke plate and near
Metal simultaneously can play the role of certain arc-chute, improve the electric life ability of product.
A kind of DC relay can be improved arc extinguishing ability of the utility model, using by the both ends end of movable contact spring 3
Along the distance between be designed to the distance between less than two static contacts 21,22 outer ledges, and by the both ends end of movable contact spring 3
The top on edge is set as arc, the bottom of two static contacts 21,22 outer ledges is also set as arc, so that producing between sound contact
Raw electric arc can effectively be guided in the grid slot of arc extinguishing insulating boot, to improve arc extinguishing ability.
A kind of DC relay can be improved arc extinguishing ability of the utility model uses outside ceramic shield 1, in correspondence
The magnet steel 8 for arc extinguishing is also equipped with the place of matching of two static contacts 21,22 in the both ends of movable contact spring 3.The utility model
This structure, when relay is under the action of external arc extinguishing magnetic field, further speed up with elongate connect, breaking arc.Load is wanted
The electric arc for asking bigger life span to generate just is more difficult to disjunction, and when external magnetic field height is enough, electric arc will be elongated to arc extinguishing
Arc extinguishing insulating boot on grid, to further speed up electric arc disjunction.
A kind of DC relay can be improved arc extinguishing ability of the utility model uses in arc extinguishing insulating boot 6,
The both sides of circular through hole 61 are respectively equipped with multiple half frame shape grid slots 62 and opposite respectively with the position of two static contacts 21,22
It answers.This structure of the utility model, inside cavity 10, by increasing an arc extinguishing insulating boot 6, arc extinguishing on yoke plate 5
Grid slot 62 is arranged in insulating boot, and splatter object can be effectively isolated to and be improved electrical creepage distance.
Embodiment two
Referring to fig. 4 to shown in Fig. 6, a kind of DC relay can be improved arc extinguishing ability of the utility model, with implementation
Example one the difference is that, four blocks of magnet steel 8 be in respectively the both sides of two static contact lines and respectively with two static contact phases
One side that correspondence, i.e. magnet steel 85,86 are in two static contact lines, magnet steel 87,88 are in the another side of two static contact lines,
Magnet steel 85, magnet steel 87 correspond to static contact 21, and magnet steel 86, magnet steel 88 correspond to static contact 22.
The line at the center of two blocks of magnet steel corresponding to the same static contact passes through the center of corresponding static contact, that is,
The line at the center of magnet steel 85, magnet steel 87 by the center of corresponding static contact 21, magnet steel 86, magnet steel 88 center line
Pass through the center of corresponding static contact 22；The middle part of the arc extinguishing insulating boot 6 is equipped with square through hole 63 to adapt to described push away
Lever component 4 passes through, and the both sides of square through hole 63 are respectively equipped with multiple parallel gate cells 64 and the position with two static contacts 21,22
It sets corresponding respectively.
Be also connected with a magnetic conductive part between two blocks of magnet steel corresponding to the same static contact, that is, magnet steel 85 and magnet steel 87 it
Between be connected with magnetic conductive part 93, magnetic conductive part 94 is connected between magnet steel 86 and magnet steel 88.
The preferred embodiment of above-mentioned only the utility model, does not impose any limitation on the present invention.Though
So the utility model has been disclosed with preferred embodiment as above, however is not intended to limit the utility model.It is any to be familiar with this field
Technical staff, in the case where not departing from technical solutions of the utility model range, all using the technology contents of the disclosure above
Many possible changes and modifications are made to technical solutions of the utility model, or are revised as equivalents equivalent embodiment.Therefore,
All contents without departing from technical solutions of the utility model, according to the utility model technical spirit made to the above embodiment
What simple modification, equivalent variation and modification should all be fallen in the range of technical solutions of the utility model protection.
Claims (10)
1. a kind of DC relay that can be improved arc extinguishing ability, including accent cover directed downwardly, static contact, movable contact spring, promotion
Bar assembly and yoke plate；Two static contacts are separately fixed at the upper end of cover and protrude into the intracavitary of cover, the yoke plate connection
Cover bottom end and surround a cavity with cover；Movable contact spring in the cavity and is in yoke by catch bar component Configuration
The top of plate, the both ends of movable contact spring are matched with two static contacts respectively；It is characterized by: in the cavity, on yoke plate
It is also equipped with the arc extinguishing insulating boot of an accent upward, the bottom of the cover chamber of arc extinguishing insulating boot is additionally provided with grid slot, and grid slot is extremely
The underface at few corresponding edge matched at the both ends of movable contact spring with two static contacts.
2. the DC relay according to claim 1 that can be improved arc extinguishing ability, it is characterised in that: the movable contact spring
The distance between both ends end edge is less than the distance between two static contact outer ledges.
3. the DC relay according to claim 2 that can be improved arc extinguishing ability, it is characterised in that: the movable contact spring
The top on both ends end edge is set as arc, and the bottom of described two static contact outer ledges is also set as arc.
4. the DC relay according to claim 1 that can be improved arc extinguishing ability, it is characterised in that: the bottom of the cover
End is also mutually fixed by the periphery of a frame piece and yoke plate；The periphery of the arc extinguishing insulating boot is close to the frame piece.
5. the DC relay according to claim 1 that can be improved arc extinguishing ability, it is characterised in that: outside the cover,
The magnet steel for arc extinguishing is also equipped with the place of matching of two static contacts at the both ends for corresponding to movable contact spring.
6. the DC relay according to claim 5 that can be improved arc extinguishing ability, it is characterised in that: the cover exterior
There are four blocks of magnet steel, wherein two blocks of magnet steel are in the outside of two static contact lines, in addition two blocks of magnet steel are in two stationary contacts respectively
Both sides of head line and in being dislocatedly distributed to correspond respectively to a static contact.
7. the DC relay according to claim 6 that can be improved arc extinguishing ability, it is characterised in that: described to be in two
The center line of two blocks of magnet steel in the outside of static contact line is in bias profile relative to two static contact lines, described to be in two
The center line of two blocks of magnet steel on the both sides of static contact line is also in bias profile with corresponding static contact；The arc extinguishing insulating boot
Middle part be equipped with circular through hole passed through with adapting to the promotion bar assembly, the both sides of circular through hole are respectively equipped with multiple half frame shapes
Grid slot is simultaneously corresponding with the position of two static contacts difference.
8. the DC relay according to claim 5 that can be improved arc extinguishing ability, it is characterised in that: the cover exterior
There are four blocks of magnet steel, four blocks of magnet steel are in both sides of two static contact lines and corresponding with two static contacts respectively respectively.
9. the DC relay according to claim 8 that can be improved arc extinguishing ability, it is characterised in that: correspond to same
The line at the center of two blocks of magnet steel of static contact passes through the center of corresponding static contact；The middle part of the arc extinguishing insulating boot is equipped with
Square through hole is passed through with adapting to the promotion bar assembly, and the both sides of square through hole are respectively equipped with multiple parallel gate cells and with two
The position difference of a static contact is corresponding.
10. can be improved the DC relay of arc extinguishing ability according to claim 6 or 8, it is characterised in that: same
A magnetic conductive part is also connected between two blocks of magnet steel corresponding to static contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820738706.1U CN208225805U (en) | 2018-05-17 | 2018-05-17 | A kind of DC relay can be improved arc extinguishing ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820738706.1U CN208225805U (en) | 2018-05-17 | 2018-05-17 | A kind of DC relay can be improved arc extinguishing ability |
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| Publication Number | Publication Date |
|---|---|
| CN208225805U true CN208225805U (en) | 2018-12-11 |
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ID=64509004
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820738706.1U Active CN208225805U (en) | 2018-05-17 | 2018-05-17 | A kind of DC relay can be improved arc extinguishing ability |
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| CN (1) | CN208225805U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109830405A (en) * | 2019-02-12 | 2019-05-31 | 厦门宏发电力电器有限公司 | A kind of arc extinguishing structure of high voltage direct current relay |
| CN110473744A (en) * | 2019-08-09 | 2019-11-19 | 厦门宏发电力电器有限公司 | A kind of DC relay carrying out arc extinguishing based on magnet steel |
-
2018
- 2018-05-17 CN CN201820738706.1U patent/CN208225805U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109830405A (en) * | 2019-02-12 | 2019-05-31 | 厦门宏发电力电器有限公司 | A kind of arc extinguishing structure of high voltage direct current relay |
| CN110473744A (en) * | 2019-08-09 | 2019-11-19 | 厦门宏发电力电器有限公司 | A kind of DC relay carrying out arc extinguishing based on magnet steel |
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