CN204407253U - A kind of relay reversing switch - Google Patents
A kind of relay reversing switch Download PDFInfo
- Publication number
- CN204407253U CN204407253U CN201520068940.4U CN201520068940U CN204407253U CN 204407253 U CN204407253 U CN 204407253U CN 201520068940 U CN201520068940 U CN 201520068940U CN 204407253 U CN204407253 U CN 204407253U
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- Prior art keywords
- relay
- change over
- over switch
- normally
- contact
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- Expired - Fee Related
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- 239000000853 adhesive Substances 0.000 claims abstract description 4
- 230000001070 adhesive effect Effects 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 230000005355 Hall effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
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- Keying Circuit Devices (AREA)
Abstract
The utility model discloses a kind of relay reversing switch, comprise relay (1), change over switch (2), connect wire (3) and indicator light (4).The normally-closed contact of relay (1) with normally opened contact all by being connected wire (3) cross-conduction; When not pressing change over switch (2), the coil of relay (1) is not charged, and moving contact 3,4 is connected with normally-closed contact 1,2 respectively; When pressing change over switch (2), the charged adhesive of coil of relay (1), moving contact 3,4 is connected with normally opened contact 5,6 respectively; Thus, by pressing, discharging change over switch (2), realize the commutation function of the circuit that relay (1) is connected.The utility model achieves electric current and the isolation of the person, ensure that personal safety, eliminates potential safety hazard; The simultaneously installation of this relay reversing switch can not destroy the agent structure of former instrument, have easy to operate, cost is low, be easy to the advantage that makes and be convenient to promote.
Description
Technical field
The utility model belongs to physical experiment apparatus technical field, is specifically related to a kind of relay reversing switch.
Background technology
In College Physics Experiments of Electromagnetism, reversing switch application is more, and such as, in the experiment such as " Hall effect and application ", " surveying long straight solenoid magnetic field with Hall element ", application many groups reversing switch carries out the commutation in electric current and magnetic field.The reversing switch of laboratory apparatus configuration is generally double-point double-throw switch, needs student manually to close a floodgate up and down and commutates.Because double-point double-throw switch is comparatively large by electric current, commutation is closed a floodgate has electric spark to emerge frequently, has the danger of electric shock, bring hidden danger to the personal safety of teachers and students in experimental implementation.
Electromagnetic relay is a kind of electronic control device, it has control system (also known as input circuit) and by control system (also known as output loop), usually be applied in automatic control circuit, it is actually the one " automatic switch " removing to control larger current, higher voltage with less electric current, lower voltage.Therefore play the effects such as automatic adjustment, safeguard protection, change-over circuit in circuit.Therefore utilize electromagnetic relay upgrading manual reverse of direction switch simple, and instrument security performance can be improved.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of relay reversing switch.
In order to achieve the above object, the technical solution of the utility model is as follows:
The utility model provides a kind of relay reversing switch, comprises relay, change over switch, connection wire and indicator light; The normally-closed contact 1 of relay is with normally opened contact 6, normally-closed contact 2 and normally opened contact 5 all by being connected wires cross conducting, and its commutation is controlled by change over switch; When not pressing change over switch, the coil of relay is not charged, and moving contact 3,4 is connected with normally-closed contact 1,2 respectively; When pressing change over switch, the charged adhesive of coil of relay, moving contact 3,4 is connected with normally opened contact 5,6 respectively; Thus, by pressing, discharging change over switch, the commutation function of the circuit that relay is connected is realized.
Described relay is double-pole bidirectional relay, and coil working voltage is 12VDC, normally-closed contact 1,2, and the parameter of moving contact 3,4 and normally opened contact 5,6 is 5A 240VAC, 5A 28VDC; Described indicator light is red-light LED indicator light.
The beneficial effects of the utility model are: owing to adopting the commutation of Control electric current, and student only needs to press, discharge change over switch in experimental implementation, achieves electric current and the isolation of the person, ensure that personal safety, eliminate potential safety hazard; The simultaneously installation of this relay reversing switch can not destroy the agent structure of former instrument, have easy to operate, cost is low, be easy to the advantage that makes and be convenient to promote.
Accompanying drawing explanation
Fig. 1 is the utility model circuit theory diagrams.
Fig. 2 is former double-point double-throw switch schematic diagram.
Fig. 3-Fig. 4 is that the utility model uses schematic diagram.
Embodiment
The utility model is also described in further detail with reference to accompanying drawing below in conjunction with embodiment: Fig. 2 is the double-point double-throw switch of former laboratory apparatus configuration, in the process upgrading to this relay reversing switch, former double-point double-throw switch is only needed to remove, change relay 1, corresponding wiring terminal is by original order cut-in relay 1, then increase the direct current 12V circuit of road control relay 1 coil and change over switch 2 and indicator light 4, apparatus subject structure is constant.Schematic diagram after repacking is shown in Fig. 3, Fig. 4.
See Fig. 1, in " Hall effect and application " experimentation, first required electric current is connected to I input, unclamp change over switch 2, now the coil of relay 1 is not charged, moving contact 3,4 is connected with normally-closed contact 1,2 respectively, and electric current forward flows through Hall element or magnet exciting coil, records forward measurement data; Then carry out switch operation, press change over switch 2, indicator light 4 is lighted, the now charged adhesive of the coil of relay 1, and moving contact 3,4 is connected with normally opened contact 5,6 respectively, and electric current flows counterflow through Hall element or magnet exciting coil, records reverse measurement data.Thus, by pressing, discharging change over switch 2, the commutation function of the circuit that relay is connected is realized.
Claims (2)
1. a relay reversing switch, comprise relay (1), change over switch (2), connect wire (3) and indicator light (4), it is characterized in that the normally-closed contact 1 of relay (1) and normally opened contact 6, normally-closed contact 2 and normally opened contact 5 all by being connected wire (3) cross-conduction, its commutation is controlled by change over switch (2); When not pressing change over switch (2), the coil of relay (1) is not charged, and moving contact 3,4 is connected with normally-closed contact 1,2 respectively; When pressing change over switch (2), the charged adhesive of coil of relay (1), moving contact 3,4 is connected with normally opened contact 5,6 respectively; Thus, by pressing, discharging change over switch (2), realize the commutation function of the circuit that relay (1) is connected.
2. a kind of relay reversing switch according to claim 1, it is characterized in that: described relay (1) is double-pole bidirectional relay, and coil working voltage is 12VDC, normally-closed contact 1,2, the parameter of moving contact 3,4 and normally opened contact 5,6 is 5A 240VAC, 5A 28VDC; Described indicator light (4) is red-light LED indicator light.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201520068940.4U CN204407253U (en) | 2015-01-30 | 2015-01-30 | A kind of relay reversing switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201520068940.4U CN204407253U (en) | 2015-01-30 | 2015-01-30 | A kind of relay reversing switch |
Publications (1)
Publication Number | Publication Date |
---|---|
CN204407253U true CN204407253U (en) | 2015-06-17 |
Family
ID=53431091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201520068940.4U Expired - Fee Related CN204407253U (en) | 2015-01-30 | 2015-01-30 | A kind of relay reversing switch |
Country Status (1)
Country | Link |
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CN (1) | CN204407253U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106783457A (en) * | 2016-12-28 | 2017-05-31 | 珠海格力节能环保制冷技术研究中心有限公司 | Jerk self-lock switch and automation equipment |
-
2015
- 2015-01-30 CN CN201520068940.4U patent/CN204407253U/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106783457A (en) * | 2016-12-28 | 2017-05-31 | 珠海格力节能环保制冷技术研究中心有限公司 | Jerk self-lock switch and automation equipment |
CN106783457B (en) * | 2016-12-28 | 2019-04-09 | 珠海格力电器股份有限公司 | Scram self-locking switch and automation equipment |
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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 |
Granted publication date: 20150617 Termination date: 20160130 |
|
EXPY | Termination of patent right or utility model |