CN200953414Y - Safety socket - Google Patents
Safety socket Download PDFInfo
- Publication number
- CN200953414Y CN200953414Y CNU2006201494743U CN200620149474U CN200953414Y CN 200953414 Y CN200953414 Y CN 200953414Y CN U2006201494743 U CNU2006201494743 U CN U2006201494743U CN 200620149474 U CN200620149474 U CN 200620149474U CN 200953414 Y CN200953414 Y CN 200953414Y
- Authority
- CN
- China
- Prior art keywords
- fuse
- bulb
- plug
- load
- live wire
- 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
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Abstract
The utility model relates to an over-current protection safety plug; a fuse, a resistance, a bulb and a terminal screw are arranged between a plug piece bottom plate and a cover cap; the resistance is series with the bulb and parallel with the fuse, and one end of the fuse is connected with a live wire plug piece and its other end is connected with a load live wire. When the load is overlarge due to the failure current, the spark of hurting the personnel safety doesn't occur when the plug is inserted into the power socket, and simultaneously the indicator light displays when the fuse is burned out.
Description
Affiliated technical field
The utility model relates to a kind of plug that is connected with AC Power supply socket, and the safety plug of overcurrent insurance is especially arranged.
Background technology
It is made up of present known plug inserted sheet and housing, directly is connected powering load with the single-phase alternating current supply socket, and it has advantages such as simple in structure, inexpensive, convenient.Use very extensively, but also exist when load has fault current excessive, can produce Da Hua during plug insertion socket, personal safety is had the deficiency of injury.
Summary of the invention
Exist when load hinders for some reason electric current to cross the deficiency that conference produces spark in order to overcome existing plug, the purpose of this utility model provides a kind of safety plug, it not only plug cross very much not because of electric current and can produce spark, and also have fuse to blow the indicator light demonstration.
The technical scheme that the utility model technical solution problem is adopted is: fuse, resistance, bulb and terminal screw etc. are housed in the middle of inserted sheet base plate and cover cap, resistance series connection bulb is in parallel with fuse, fuse one end is electrically connected with the live wire inserted sheet, and the other end is electrically connected with the load live wire.Electric current is excessive when the load short-term, plug insertion socket one instantaneous, the fuse of little electric current is disconnected by combustion immediately, because of electric current little so can not produce spark.When fuse disconnects, the live wire electric current is crossed bulb and load through the resistance drop baric flow, the luminous demonstration fuse of bulb is blown, fuse is finished changing the bulb short circuit, bulb extinguishes because of dead electricity, thereby reach the utility model, not only plug is crossed very much not because of electric current and can be produced spark, and also has fuse to blow the purpose that indicator light shows.
The utility model beneficial effect is that plug is crossed very much not because of electric current can produce spark, has fuse to blow when indicator light shows and protects load in use to burn out load because of electric current is excessive in addition.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1, the 2nd, the vertical section structure figure of this real new embodiment.
Fig. 3 is the safety plug circuit theory diagrams.
Among the figure 1, grounding insert-pin 2, resistance 3, bulb 4, fuse 5, live wire inserted sheet 6, zero line inserted sheet 7, cover cap 8, load live wire contact 9, inserted sheet base plate 10, red glass cover 11, load shell
Embodiment
Shown in Fig. 1,2, embodiment, inserted sheet base plate (9) is gone up dead earth inserted sheet (1), live wire inserted sheet (5), zero line inserted sheet (6) and is provided with fuse (4), resistance (2) and bulb (3) all fixedly on the inserted sheet base plate (9) in the middle of three inserted sheets, and plug-in mounting red glass cover (10) interfixes with inserted sheet base plate (9) on cover cap (7) panel.
Shown in state's 3 circuit, fuse (4) one ends are electrically connected with live wire inserted sheet (5) and bulb (3), the other end is electrically connected with load live wire (8) and resistance (2), the other end of resistance (2) and bulb (3) is electrically connected, zero line inserted sheet (6) is electrically connected with zero-power line and load zero line (6), and grounding insert-pin (1) is electrically connected with the shell (11) of power ground and load.Bulb (3) is not worked by bulb (3) by the short circuit no current when fuse (4) is intact, in case fuse (4) blows, the live wire electric current flows through bulb 3 through resistance (2) step-down) and load, bulb (3) is lighted and is shown that fuse (4) is blown.Fuse (4) adopts seal glass tubulose fuse, can not burn out shell, and is safer.
Claims (2)
1, a kind of safety plug is equipped with fuse, resistance, bulb and terminal screw in the middle of inserted sheet base plate and cover cap, it is characterized in that: resistance series connection bulb is in parallel with fuse, and fuse one end is electrically connected with the live wire inserted sheet, and the other end is electrically connected with the load live wire.
2, safety plug according to claim 1 is characterized in that: fuse adopts the fuse of seal glass tubulose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201494743U CN200953414Y (en) | 2006-09-27 | 2006-09-27 | Safety socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201494743U CN200953414Y (en) | 2006-09-27 | 2006-09-27 | Safety socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200953414Y true CN200953414Y (en) | 2007-09-26 |
Family
ID=38811716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201494743U Expired - Fee Related CN200953414Y (en) | 2006-09-27 | 2006-09-27 | Safety socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200953414Y (en) |
-
2006
- 2006-09-27 CN CNU2006201494743U patent/CN200953414Y/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 | ||
| 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 |