CN203850811U - One-click type power failure automatic turn-off protection switch - Google Patents
One-click type power failure automatic turn-off protection switch Download PDFInfo
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- CN203850811U CN203850811U CN201420288018.1U CN201420288018U CN203850811U CN 203850811 U CN203850811 U CN 203850811U CN 201420288018 U CN201420288018 U CN 201420288018U CN 203850811 U CN203850811 U CN 203850811U
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- relay
- node
- normally
- switch
- contact
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Abstract
The utility model discloses a one-click type power failure automatic turn-off protection switch, which is characterized by respectively comprising a double-link button switch, a first relay, a second relay and a third relay. The first normally-opened contact of the first relay and the first normally-opened contact of the second relay are connected in parallel between a node A and a node B. a first switch and the normally-closed contact of the third relay are connected in parallel between the node B and a node C. The normally-closed contact of the second relay, the second normally-opened contact of the first relay and the coil of the third relay are connected in series between the node A and a node E. The second normally-opened contact of the second relay and the normally-closed contact of the first relay are connected in parallel and then are connected in series with the coil of the second relay between the node A and the node E. a second switch and the normally-opened contact of the third relay are connected in parallel between the node E and a node D. The coil of the first relay is connected in series between the node C and the node D. The node A and the node D are adopted as an AC 220V input end. The node C and the node D are adopted as a load end. According to the technical scheme of the utility model, the switch is simplified to use, and can be widely used for daily household illumination.
Description
Technical field
The utility model relates to cut-off switch, more specifically says a kind of protection switch that can realize auto-breaking after power failure.
Background technology
In daily life and industrial production, sometimes because there is the phenomenon of unexpected power-off in power failure or misoperation, and while again sending a telegram here, for factors such as safety, often do not wish to allow equipment automatically put into operation immediately, but by manually starting equipment, avoid equipment to move suddenly danger and the energy waste of generation.In prior art, need two buttons for the protection switch of realizing the moving turn-off function that has a power failure, one for starting device, and another is for turn-off apparatus, such as the protection switch being applied on industrial lathe; But in some occasion and two switches of improper use, as the illumination of house, many switches, not only operator easily obscures but also wastes.Also there is the protection switch that uses a button, but need to increase, low pressure controller circuit is set, need the relative set such as lowering and stabilizing blood pressure; Some protection switches by circuit chip control need to configure wiring board and programming etc. especially, have certain complexity, and cost is relatively high.
Utility model content
The utility model is for avoiding the existing weak point of above-mentioned prior art, and a kind of one-touch auto-off when power cut protection switch that breaks is provided, with simplify switch use, simplify the structure of switch, can even be applied in more widely on daily home lighting.
The utility model is that technical solution problem adopts following technical scheme:
The design feature of the disconnected protection switch of the one-touch auto-off when power cut of the utility model is to arrange:
One duplex key switch, has the first switch SW
-1with second switch SW
-2;
One first relay, has first relay the first normally opened contact J1-1, first relay the second normally opened contact J1-2 and the first relay normally-closed contact J1-3;
One second relay, has second relay the first normally opened contact J2-1, second relay the second normally opened contact J2-2 and the second relay normally-closed contact J2-3;
One the 3rd relay, has the 3rd relay normally open contact J3-1 and the 3rd relay normally-closed contact J3-2;
Described first relay the first normally opened contact J1-1 and second relay the first normally opened contact J2-1 are connected in parallel between node A and node B; The first switch SW
-1and the 3rd relay normally-closed contact J3-2 be connected in parallel between node B and node C; Described the second relay normally-closed contact J2-3, first relay the second normally opened contact J1-2 and the 3rd relay coil J3 are connected between node A and node E jointly, after second relay the second normally opened contact J2-2 and the first relay normally-closed contact J1-3 parallel connection and the second relay coil J2 be connected between node A and node E, second switch SW
-2and the 3rd relay normally open contact J3-1 be connected in parallel between node E and node D; The first relay coil J1 is connected between node C and node D; Taking node A and node D as alternating current 220V input; Taking node C and node D as load end.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model, for alternating current 220V power supply, arranges a ganged switch and each relay and has realized the disconnected protection of one-touch auto-off when power cut, has simplified structure and the use of switch, can even be applied in more widely on daily home lighting.
2, the utility model repeat circuit J1 and J2 have all used three contacts, i.e. J1-1, J1-2, J1-3 and J2-1, J2-2, J2-3, and conventional relay generally only has two pairs of contacts, obviously not enough.The utility model is not in the situation that affecting function, making has a common port between normally opened contact J1-1 and normally closed J1-3, two contacts of J1-1 and J1-3 can replace by pair of contact on relay like this, and in like manner J2-2 and J2-3 have a common port, so also can replace by pair of contact.Thereby also can meet circuit requirement with the relay of two pairs of contacts.
Brief description of the drawings
Fig. 1 is the utility model circuit theory diagrams;
Embodiment
Referring to Fig. 1, the circuit structure of the disconnected protection switch of the one-touch auto-off when power cut of the present embodiment is for arranging:
One duplex key switch SW, has the first switch SW
-1with second switch SW
-2;
One first relay, has first relay the first normally opened contact J1-1, first relay the second normally opened contact J1-2 and the first relay normally-closed contact J1-3;
One second relay, has second relay the first normally opened contact J2-1, second relay the second normally opened contact J2-2 and the second relay normally-closed contact J2-3;
One the 3rd relay, has the 3rd relay normally open contact J3-1 and the 3rd relay normally-closed contact J3-2;
First relay the first normally opened contact J1-1 and second relay the first normally opened contact J2-1 are connected in parallel between node A and node B; The first switch SW
-1and the 3rd relay normally-closed contact J3-2 be connected in parallel between node B and node C; Described the second relay normally-closed contact J2-3, first relay the second normally opened contact J1-2 and the 3rd relay coil J3 are connected between node A and node E jointly, after second relay the second normally opened contact J2-2 and the first relay normally-closed contact J1-3 parallel connection and the second relay coil J2 be connected between node A and node E, second switch SW
-2and the 3rd relay normally open contact J3-1 be connected in parallel between node E and node D; The first relay coil J1 is connected between node C and node D; Taking node A and node D as alternating current 220V input; Taking node C and node D as load end.
Operation principle:
State 1, while pressing duplex key switch SW for the first time, electric current is by J1-3, J2 and SW
-2form loop, in circuit the coil J2 of the second relay at first electric, thereupon because of second relay the first normally opened contact J2-1 closure, drive the first relay work, the while working power of load L is switched on, if load L is bulb, bulb is lit; Unclamp duplex key switch SW, the coil J2 dead electricity of the second relay thereupon, but because first relay the first normally opened contact J1-1 is closed, form self-locking, therefore bulb remains on illuminating state.
State 2, in the time of power-off, bulb quits work, and each contacts status of each relay is replied as initial condition, and while therefore again incoming call, bulb can not lighted automatically.
State 3, be under illuminating state when bulb, the coil of the first relay be electricity condition, state while pressing for the first time duplex key switch SW in the state of each contact of the first relay and above-mentioned state 1 is different, be now that J1-2 closure, J1-3 disconnect, therefore in the time pressing duplex key switch SW, the 3rd relay coil J3 obtains electric, in the time unclamping SW switch, the 3rd relay normally-closed contact J3-2 and duplex key switch SW are all in off-state, therefore the first relay coil J1 dead electricity, bulb extinguishes; J1-2 disconnects and causes also dead electricity of the 3rd relay coil J3 simultaneously.Whole like this circuit returns to again initial condition, waits for and triggers duplex key switch SW next time.
Claims (1)
1. the disconnected protection switch of one-touch auto-off when power cut, is characterized in that arranging:
One duplex key switch, has the first switch SW
-1with second switch SW
-2;
One first relay, has first relay the first normally opened contact J1-1, first relay the second normally opened contact J1-2 and the first relay normally-closed contact J1-3;
One second relay, has second relay the first normally opened contact J2-1, second relay the second normally opened contact J2-2 and the second relay normally-closed contact J2-3;
One the 3rd relay, has the 3rd relay normally open contact J3-1 and the 3rd relay normally-closed contact J3-2;
Described first relay the first normally opened contact J1-1 and second relay the first normally opened contact J2-1 are connected in parallel between node A and node B; The first switch SW
-1and the 3rd relay normally-closed contact J3-2 be connected in parallel between node B and node C; Described the second relay normally-closed contact J2-3, first relay the second normally opened contact J1-2 and the 3rd relay coil J3 are connected between node A and node E jointly, after second relay the second normally opened contact J2-2 and the first relay normally-closed contact J1-3 parallel connection and the second relay coil J2 be connected between node A and node E, second switch SW
-2and the 3rd relay normally open contact J3-1 be connected in parallel between node E and node D; The first relay coil J1 is connected between node C and node D; Taking node A and node D as alternating current 220V input; Taking node C and node D as load end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420288018.1U CN203850811U (en) | 2014-05-30 | 2014-05-30 | One-click type power failure automatic turn-off protection switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420288018.1U CN203850811U (en) | 2014-05-30 | 2014-05-30 | One-click type power failure automatic turn-off protection switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203850811U true CN203850811U (en) | 2014-09-24 |
Family
ID=51563783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420288018.1U Expired - Fee Related CN203850811U (en) | 2014-05-30 | 2014-05-30 | One-click type power failure automatic turn-off protection switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203850811U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137880A (en) * | 2015-09-10 | 2015-12-09 | 王名杰 | Intelligent control switch |
-
2014
- 2014-05-30 CN CN201420288018.1U patent/CN203850811U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137880A (en) * | 2015-09-10 | 2015-12-09 | 王名杰 | Intelligent control switch |
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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: 20140924 Termination date: 20160530 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |