CN203895373U - Electromagnetic relay with pushing mechanism - Google Patents
Electromagnetic relay with pushing mechanism Download PDFInfo
- Publication number
- CN203895373U CN203895373U CN201420254765.3U CN201420254765U CN203895373U CN 203895373 U CN203895373 U CN 203895373U CN 201420254765 U CN201420254765 U CN 201420254765U CN 203895373 U CN203895373 U CN 203895373U
- Authority
- CN
- China
- Prior art keywords
- contact
- electromagnetic relay
- metal arc
- pushing mechanism
- sheet
- 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 - Fee Related
Links
- 239000002184 metal Substances 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 239000004033 plastic Substances 0.000 claims abstract description 22
- 229920003023 plastic Polymers 0.000 claims abstract description 22
- 229910000906 Bronze Inorganic materials 0.000 claims description 3
- 239000010974 bronze Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000004821 Contact adhesive Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005352 galvanomagnetic phenomena Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses an electromagnetic relay with a pushing mechanism. The electromagnetic relay comprises a magnetic circuit portion, a contact portion, a connecting magnetic circuit portion and a pushing mechanism of the contact portion. The contact portion comprises a movable contact group and a static contact group. The movable contact group comprises a movable contact sheet and a movable contact point. The static contact group comprises a static contact sheet and a static contact point. The pushing mechanism comprises a plastic pushing block. One end of the plastic pushing block is connected with the upper portion of the movable contact group. The characteristics of the electromagnetic relay are that: a metal arc isolating sheet is arranged between the plastic pushing block and the movable and static contact points; the metal arc isolating sheet comprises an arc isolating portion and an interconnecting piece which are connected integratedly, and the interconnecting piece is used for fixing the metal arc isolating sheet; and the interconnecting piece of the metal arc isolating sheet and the upper portion of the movable contact sheet are attached to fix. The advantages of the electromagnetic relay are that: good contact of the contact points of the electromagnetic relay is guaranteed at work, the failure rate of the electromagnetic relay is reduced, so that the performance and service life are guaranteed, and the work reliability of the electromagnetic relay is improved.
Description
Technical field
The utility model relates to a kind of electromagnetic relay, relates in particular to a kind of electromagnetic relay with pushing mechanism.
Background technology
Relay is an automatic electric switch, concerning electromagnetic relay, as long as add certain voltage at coil two ends, after the excessively certain electric current of coil midstream, produce galvanomagnetic effect, armature will be inhaled and drive moving contact and fixed contact adhesive to iron core under the effect of electromagnetic attracting force.When after coil blackout, the suction of electromagnetism also disappears thereupon, armature will return to original position under the effect of the mechanical counter-force of elastic component, and moving contact and fixed contact are discharged, and has reached the conducting in circuit, the object of cut-out like this by adhesive, the release of the dynamic and static contact of relay.
In the time that the moving contact of relay and fixed contact are discharging, between contact, can produce arcing, and contact temperature rise is larger, between contact, open circuit voltage is higher, just more easily produces arcing phenomenon.Have data to show that the transient temperature producing because of contact arc discharge of surveying by optical test method reaches 3000 DEG C, this is enough to make to produce gasification near the resin in the working of plastics of contact, and the glass fibre in working of plastics can be melt into bead.The organic gas of gasification can pollute contact, and bead can splash, comes off and be bonded in contact surface, and these all can cause that contact contact resistance increases, contact temperature rise is sharply risen, and then cause bonding and ablation contact, contact, or make directly not conducting of contact, thus relay was lost efficacy.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of electromagnetic relay with pushing mechanism that can improve relay functional reliability.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of electromagnetic relay with pushing mechanism, comprise magnetic circuit part, contact portion, the pushing mechanism of the magnetic circuit part described in connecting and described contact portion, described contact portion comprises moving contact group and the quiet group that contacts, described moving contact group comprises moving contacting plate and moving contact, described quiet contact group comprises quiet contact chip and fixed contact, described pushing mechanism comprises plastics pushing block, one end of described plastics pushing block is connected with the described moving top that contacts group, described plastics pushing block and described moving contact, between described fixed contact, be provided with metal arc sheet, described metal arc sheet comprise one connect arc portion and in order to fixing connecting portion, the connecting portion of described metal arc sheet amplexiforms fixing with the top of described moving contacting plate mutually.
The front end of the arc portion of described metal arc sheet, to described plastics pushing block direction perk, so can better meet contact air gap requirement, can make again contact heat radiation better.
The arc portion of described metal arc sheet is to described moving contact and described fixed contact projection and be arc surfaced, can be the face of cylinder or sphere etc., like this when contact produces when arcing, the sector-meeting of metal arc is arc light and the outside scattering of heat, the heat radiation of contact got back and further improve.
The material of described metal arc sheet is beryllium-bronze.The heat conductivility that beryllium-bronze is good makes heat radiation more excellent, is the optimal selection of metal arc sheet material.
Compared with prior art, the utility model has the advantage of: owing to being provided with metal arc sheet between plastics pushing block and moving contact, fixed contact, in the time that the moving contact of relay and fixed contact produce arcing in dispose procedure, metal arc sheet absorbs heat heat radiation on the one hand, simultaneously by the arc light reflecting producing, both baffle plastics pushing block be subject to the direct calcination of arc light, reduced being again heated of plastics pushing blocks; On the other hand, metal arc sheet resistance shelves the bead that is melt into by the glass fibre in plastics pushing block splash, come off and bond on the dynamic and static contact of relay, and reduce the gasify risk of the organic gaseous contamination contact forming of resin in plastics pushing block, thereby ensure that relay contact contact in the time of work is good, reduce relay the probability losing efficacy has occurred, and then ensured performance and the electric life of relay, and improve the reliability of relay work.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model embodiment mono-;
Fig. 2 is the assembling schematic diagram of the pushing mechanism in the utility model embodiment mono-, moving contact group and metal arc sheet;
Fig. 3 is promotion contact group in the utility model embodiment mono-and the assembling schematic diagram of metal arc sheet;
The structural representation of the metal arc sheet in Fig. 4 the utility model embodiment mono-;
Fig. 5 is the schematic diagram of the utility model embodiment bis-;
Fig. 6 is promotion contact group in the utility model embodiment bis-and the assembling schematic diagram of metal arc sheet;
Fig. 7 is the structural representation of the metal arc sheet in the utility model embodiment bis-.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
Embodiment mono-, as shown in Figures 1 to 4, a kind of electromagnetic relay with pushing mechanism, comprise magnetic circuit part 1, contact portion 2, connect the pushing mechanism 3 of magnetic circuit part 1 and contact portion 2, contact portion 2 comprises moving contact group 21 and the quiet group 22 that contacts, moving contact group 21 comprises moving contacting plate 211 and moving contact 212, quiet contact group 22 comprises quiet contact chip 221 and fixed contact 222, pushing mechanism 3 comprises plastics pushing block 31, one end of plastics pushing block 31 is connected with the moving top that contacts group 21, plastics pushing block 31 and moving contact 212, between fixed contact 222, be provided with metal arc sheet 4, metal arc sheet 4 comprise one connect arc portion 41 and in order to fixing connecting portion 42, the connecting portion 42 of metal arc sheet 4 amplexiforms fixing with the top of moving contacting plate 211 mutually, the arc portion 41 of metal arc sheet 4 is to moving contact 212 and fixed contact 222 projections and be arc surfaced.
Embodiment bis-, as shown in Figures 5 to 7, its technical characterictic is identical with embodiment mono-, and difference is that the front end of arc portion 41 of metal arc sheet 4 is to the 31 direction perks of plastics pushing block.
Claims (4)
1. the electromagnetic relay with pushing mechanism, comprise magnetic circuit part, contact portion, the pushing mechanism of the magnetic circuit part described in connecting and described contact portion, described contact portion comprises moving contact group and the quiet group that contacts, described moving contact group comprises moving contacting plate and moving contact, described quiet contact group comprises quiet contact chip and fixed contact, described pushing mechanism comprises plastics pushing block, one end of described plastics pushing block is connected with the described moving top that contacts group, it is characterized in that described plastics pushing block and described moving contact, between described fixed contact, be provided with metal arc sheet, described metal arc sheet comprise one connect arc portion and in order to fixing connecting portion, the connecting portion of described metal arc sheet amplexiforms fixing with the top of described moving contacting plate mutually.
2. a kind of electromagnetic relay with pushing mechanism according to claim 1, the front end of the arc portion of the metal arc sheet described in it is characterized in that is to described plastics pushing block direction perk.
3. a kind of electromagnetic relay with pushing mechanism according to claim 1, the arc portion that it is characterized in that described metal arc sheet is to described moving contact and described fixed contact projection and be arc surfaced.
4. a kind of electromagnetic relay with pushing mechanism according to claim 1, is characterized in that the material of described metal arc sheet is beryllium-bronze.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420254765.3U CN203895373U (en) | 2014-05-15 | 2014-05-15 | Electromagnetic relay with pushing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420254765.3U CN203895373U (en) | 2014-05-15 | 2014-05-15 | Electromagnetic relay with pushing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203895373U true CN203895373U (en) | 2014-10-22 |
Family
ID=51721737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420254765.3U Expired - Fee Related CN203895373U (en) | 2014-05-15 | 2014-05-15 | Electromagnetic relay with pushing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203895373U (en) |
-
2014
- 2014-05-15 CN CN201420254765.3U patent/CN203895373U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 |