CN2075392U - Switch with auto-off when power cut - Google Patents
Switch with auto-off when power cut Download PDFInfo
- Publication number
- CN2075392U CN2075392U CN 90218420 CN90218420U CN2075392U CN 2075392 U CN2075392 U CN 2075392U CN 90218420 CN90218420 CN 90218420 CN 90218420 U CN90218420 U CN 90218420U CN 2075392 U CN2075392 U CN 2075392U
- Authority
- CN
- China
- Prior art keywords
- relay
- switch
- button
- locking
- power supply
- 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.)
- Withdrawn
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- Keying Circuit Devices (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model relates to a power switch, which has the functions of opening and closing by manual and can automatically cut off the power when the power is automatically cut off suddenly. The electric energy can not be consumed when the electricity is suddenly generated. The utility model has the advantages of convenience and practicality, can protect electric appliances, can save the electric energy, and can be used for areas with frequent power failure.
Description
The present invention is the switch that can cut off the appliances power source circuit behind a kind of the power failure automatically.
The objective of the invention is to make outside mains switch can open or close artificially, also can be when power supply interrupts suddenly automatic take-off close the power circuit of electrical equipment.Saves energy, protection electrical equipment are unlikely when sending a telegram here suddenly and damage and consumed power.
Accompanying drawing Fig. 1 is an electrical schematic diagram of the present invention.
Wherein: 1, often drive button; 2, normally closed button;
3, relay (fourth); 4, switch in the relay;
5, incoming line; 6, output line;
7, neon tube.
The present invention does principle below in conjunction with Fig. 1 and describes in detail:
Power supply inserts from incoming line (5) and normally closed button (2), when engage relay (3) when often driving button (1) and output line (6) power supply, relay gets switch (4) self-locking in the attracting electric relay of electric back, this moment power supply also in the relay switch (4) by make output line (6) and relay (3) electric, loading is connected on the output line (6).When loosening when often driving button (1) and since on relay self-locking action output line (6) load still electric, " the opening " of finishing this switch acts on.When the needs powered-down, press normally closed button (2), this moment, relay (3) electric losing self-locking effect disappeared, and power supply can't be by finishing " pass " effect of this switch.When power supply interrupted suddenly, relay (3) is dead electricity also, loses self-locking action, can't pass through when power supply comes suddenly again, and finishing has a power failure closes the effect of electricity automatically.Neon tube (7) and resistance R are connected on often leaves button (1) before, luminous when incoming line has electricity, and whether unglazed when incoming line does not have electricity, being used to detect incoming line has.
Fig. 2 is the another kind of connection of this switch, and its main difference point is that relay (3) is serially connected in the load of output line (6), if this moment when zero load power supply also obstructed.The available low-voltage relay of relay (3) effectively bears load power and is mainly directly determined by the relay coil line.
Fig. 3 is the external form figure of this switch, and " opening " and " pass " two buttons are arranged, and can design external form as required arbitrarily.
The present invention adopts normally closed button, often drive each one on button, relay forms a power failure and can close electric switch automatically, and simple for structure, practical and convenient, cost is low, is applicable to family, the unit in frequent power failure area, saves energy.
Claims (2)
1, a kind of appliance switch, it is characterized in that forming by often driving the interior switch [4] of button [1], normally closed button [2], relay [3] and relay thereof in the switch, when power supply when often driving button [1] and connect, relay [3] electric self-locking and long-term energized is finished " opening ", disappear to cut off the electricity supply by normally closed button [2] cut-off relay [3] electric losing self-locking and finish " pass ", the unexpected power-off relay of power supply [3] also electric losing self-locking disappears to finish automatically and cuts off the electricity supply, also be connected to neon tube [7] and resistance R before at relay [3], whether detection line has.
2, according to claim 1, the relay in the switch (3) can be attempted by the output load end, also can be connected in series into output load, finishes self-locking open and close power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90218420 CN2075392U (en) | 1990-08-20 | 1990-08-20 | Switch with auto-off when power cut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90218420 CN2075392U (en) | 1990-08-20 | 1990-08-20 | Switch with auto-off when power cut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2075392U true CN2075392U (en) | 1991-04-17 |
Family
ID=4897250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90218420 Withdrawn CN2075392U (en) | 1990-08-20 | 1990-08-20 | Switch with auto-off when power cut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2075392U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538216A (en) * | 2014-12-25 | 2015-04-22 | 宁波卡派斯电子科技有限公司 | Button switch with power-off protection module |
| CN106936124A (en) * | 2017-03-07 | 2017-07-07 | 邵晓怡 | A kind of electrical equipment uses safe method for designing |
-
1990
- 1990-08-20 CN CN 90218420 patent/CN2075392U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538216A (en) * | 2014-12-25 | 2015-04-22 | 宁波卡派斯电子科技有限公司 | Button switch with power-off protection module |
| CN106936124A (en) * | 2017-03-07 | 2017-07-07 | 邵晓怡 | A kind of electrical equipment uses safe method for designing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |