CN203456392U - Electromagnetic relay with contact protection - Google Patents
Electromagnetic relay with contact protection Download PDFInfo
- Publication number
- CN203456392U CN203456392U CN201320560435.2U CN201320560435U CN203456392U CN 203456392 U CN203456392 U CN 203456392U CN 201320560435 U CN201320560435 U CN 201320560435U CN 203456392 U CN203456392 U CN 203456392U
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- CN
- China
- Prior art keywords
- contact
- electromagnetic relay
- sheet
- armature
- coil
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- Expired - Fee Related
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses an electromagnetic relay with contact protection. The electromagnetic relay comprises a static contact, a coil with an iron core, an iron yoke for fixing the coil, and an armature arranged at the end of the iron core. One end of the armature is connected with the iron yoke through the spring, while the other end of the armature is a moving contact matching with the static contact. A wire connecting piece A and a wire connecting piece B are mounted at the bottom of the coil. A conflux sheet A, a conflux sheet B and a conflux sheet C are arranged between the wire connecting piece A and the wire connecting piece B. An arc extinguishing mechanism is mounted between the conflux sheet A and the conflux sheet B. According to the electromagnetic relay provided by the utility model, a discharge diode is additionally mounted in a contact circuit to optimize the load current channel of the electromagnetic relay, i.e. a current path is provided when an inductive load is power off, so that the contacts are protected when the inductive load is disconnected, and are prevented from getting burnt, thereby prolonging the service life of the relay.
Description
Technical field
The utility model relates to a kind of electromagnetic relay of contact-carrying protection, belongs to the design and manufacture technical field of electromagnetic relay.
Background technology
Relay is a kind of electric control device, is actually a kind of automatic switch that goes to control large electric current running with little electric current, and the break-make by its inner contact realizes circuit and controls.When contact disconnects, inductance coil can produce one identical with primary current, and the induced potential being reinforced is on contact, can produce electric arc to primary circuit disturbs, and because contact is operated in quick on off operating mode always, when contact is when disconnecting, the power consumption corrosion contact in inevitable electric arc, the useful life of therefore having limited relay.The load of the multiple character such as that electromagnetic relay contact load has is resistive, perceptual, lamp, various loads are different for the scaling loss situation of relay contact.
Utility model content
In order to solve the problems of the technologies described above, the utility model aims to provide a kind of simple in structure, long service life, do not produce the electromagnetic relay of the contact-carrying protection that electric arc disturbs.
The utility model is achieved by the following technical solution:
A kind of electromagnetic relay of contact-carrying protection, comprise the coil of fixed contact, ribbon core, the iron yoke of fixed coil, be arranged on the armature of iron core end, armature one end is by spring and iron yoke, the armature other end is the moving contact matching with described fixed contact, coil bottom is provided with lug plate A and lug plate B, is furnished with the sheet A that confluxes, sheet B and the sheet C that confluxes conflux between lug plate A and lug plate B; The described sheet A and conflux, between sheet B, arc-extinguishing mechanism is installed of confluxing.
Described arc-extinguishing mechanism is discharge diode.
The beneficial effects of the utility model are:
Compared with prior art; the electromagnetic relay of the contact-carrying protection that the utility model provides; on loop, contact, install discharge diode additional; optimize the load current passage of electromagnetic relay; while being inductive load power-off, provide current path, protected the contact while disconnecting inductive load, avoided the ablation of contact; promoted the useful life of relay, and its simple in structure, in stable condition reliable, anti-vibration and strong shock resistance.
Accompanying drawing explanation
Fig. 1 is vertical view of the present utility model;
Fig. 3 is bottom view of the present utility model;
Fig. 3 is circuit diagram of the present utility model;
1-coil, 2-break, 3-moving contact, 4-armature, 5-iron core, 6-iron yoke, 7-spring, 8-lug plate A, 9-arc-extinguishing mechanism, the 10-sheet A that confluxes, the 11-sheet B that confluxes, 12-lug plate B, the 13-sheet C that confluxes.
Embodiment
Below in conjunction with drawings and Examples, the technical solution of the utility model is described further, but described in desired protection range is not limited to;
As shown in Figure 1,2 and 3, the electromagnetic relay of the contact-carrying protection that the utility model provides, comprise the coil 1 of fixed contact 2, ribbon core 5, the iron yoke 6 of fixed coil 1, be arranged on the armature 4 of iron core 5 ends, armature 4 one end are by spring 7 and iron yoke 6, armature 4 other ends are the moving contact 3 matching with described fixed contact 2, coil 1 bottom is provided with lug plate A8 and lug plate B12, is furnished with the sheet A10 that confluxes, sheet B11 and the sheet C13 that confluxes conflux between lug plate A8 and lug plate B12; The described sheet A10 and conflux, between sheet B11, arc-extinguishing mechanism 9 is installed of confluxing, can realize the rupturing duty after disconnecting, and avoids responding to electric arc influence primary circuit and ablation contact.
In order to guarantee the effect of arc extinguishing and to control cost, described arc-extinguishing mechanism 9 is discharge diode.
Embodiment: at relay during in off-state, boosted voltage gradually, its inner coil 1 work produces magnetic field, iron core 5 band magnet attraction armature 4, the moving contact 3 of armature 4 ends is drawn close to fixed contact 2, and then relay is converted to attracting state by off-state, after relay adhesive, loop, contact is connected; While needing open circuit; reduce gradually voltage; relay coil 1 power-off demagnetization; armature 4 is replied normal position under spring 7 effects; moving contact 3 and the separated disconnection of fixed contact 2; relay is converted to off-state by attracting state, and external inductive load discharged to the sheet B11 that confluxes from the sheet A10 that confluxes by discharge diode in power-off moment, thereby realizes the protection of contact system.
Claims (2)
1. the electromagnetic relay of contact-carrying protection, comprise fixed contact (2), the coil (1) of ribbon core (5), the iron yoke (6) of fixed coil (1), be arranged on the armature (4) of iron core (5) end, armature (4) one end is by spring (7) and iron yoke (6), armature (4) other end is the moving contact (3) matching with described fixed contact (2), coil (1) bottom is provided with lug plate A(8) and lug plate B(12), lug plate A(8) and lug plate B(12) between be furnished with the sheet A(10 that confluxes), sheet B(11 confluxes) and the sheet C(13 that confluxes), it is characterized in that: described in the sheet A(10 that confluxes) and the sheet B(11 that confluxes) between arc-extinguishing mechanism (9) is installed.
2. the electromagnetic relay of contact-carrying protection according to claim 1, is characterized in that: described arc-extinguishing mechanism (9) is discharge diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320560435.2U CN203456392U (en) | 2013-09-10 | 2013-09-10 | Electromagnetic relay with contact protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320560435.2U CN203456392U (en) | 2013-09-10 | 2013-09-10 | Electromagnetic relay with contact protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203456392U true CN203456392U (en) | 2014-02-26 |
Family
ID=50136250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320560435.2U Expired - Fee Related CN203456392U (en) | 2013-09-10 | 2013-09-10 | Electromagnetic relay with contact protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203456392U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229179A (en) * | 2016-08-03 | 2016-12-14 | 太仓美宅姬娱乐传媒有限公司 | A kind of electromagnetic switch using shift fork extinguishing arc |
-
2013
- 2013-09-10 CN CN201320560435.2U patent/CN203456392U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229179A (en) * | 2016-08-03 | 2016-12-14 | 太仓美宅姬娱乐传媒有限公司 | A kind of electromagnetic switch using shift fork extinguishing arc |
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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: 20140226 Termination date: 20170910 |