CN201562844U - Current overload protection plug - Google Patents
Current overload protection plug Download PDFInfo
- Publication number
- CN201562844U CN201562844U CN2009202945537U CN200920294553U CN201562844U CN 201562844 U CN201562844 U CN 201562844U CN 2009202945537 U CN2009202945537 U CN 2009202945537U CN 200920294553 U CN200920294553 U CN 200920294553U CN 201562844 U CN201562844 U CN 201562844U
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- CN
- China
- Prior art keywords
- contact pin
- plug
- base
- protection plug
- overcurrent protection
- 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 a current overload protection plug which comprises an upper cover, a bottom cover and an overload protector, wherein the overload protector is an independent integral component, is arranged in a shell combined by the upper cover and the bottom cover, and electrically connected with a zero line contact pin and a live wire contact pin on the bottom cover. The plug realizes the overload protection of a circuit by the thermal deformation of a bimetallic sheet, and completes the reset by a reset button, and can be used repeatedly. Simultaneously, the overload protector is designed into an independent integral component, thus realizing the rapid and simple modularized assembly, simplifying the structure of the plug, and ensuring the assembly accuracy and the safety and reliability of the plug.
Description
Technical field
The utility model relates to a kind of plug, especially relates to a kind of plug with overcurrent protection.
Background technology
Electric equipment products in use; easily old because of it, use and to overload or because of factors such as improper uses; and cause danger; damage or electric wire cocks off etc. as the electric equipment products inner components; so be necessary before making electrical appliance, to guarantee earlier to provide overload protection; could safeguard the safe in utilization of electrical equipment, incident meets accident when avoiding the electric current overload.
Existing overcurrent protection plug normally adopts fuse or bimetal leaf to reach the purpose of overload protection.The one, behind the specified protective current of operating current over insurance silk, the fuse melted by heat, circuit disconnects; Another is to utilize bimetal leaf temperature distortion principle, and when current overload, bi-metal plate deformed disconnects circuit.
Above-mentioned two types plug all can reach the purpose of overload protection, but have because of structural restriction, exist structure cumbersome, profile is not attractive in appearance, use inconvenient, the problem of the unreliable grade that resets, what have also can't be applicable to English mark plug.Therefore be necessary to design a kind of simple in structure, reliable in action, easy to operate and be applicable to English mark plug the overcurrent protection plug.
Summary of the invention
Technical problem to be solved in the utility model is that a kind of overcurrent protection plug of realizing the circuit overloads protection by the bimetal leaf thermal deformation is provided at the present situation of prior art; simple, the good integrity of this plug construction, easy to operate and can reuse.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: the overcurrent protection plug; include loam cake, bottom and overload protective device; on described bottom, be provided with zero line contact pin, live wire contact pin and ground connection contact pin; its feature is being that described overload protective device is a global facility independently; it is located in the shell after the combination of loam cake and bottom, and is electrically connected with zero line contact pin and live wire contact pin on the bottom.
Described overload protective device can include a base, is provided with moved end and static terminal in the housing after this base and the cover plate combination, and spot welding is connected moved end with the live wire contact pin with the zero line contact pin respectively with static terminal; On the described static terminal fixed contact is housed, on of moved end bimetal leaf is housed, the moving contact that matches with described fixed contact is housed on the bimetal leaf; One end bending of described moved end, and be located at base on the reset button of actuatable this curved end action cooperate.
Described reset button mainly is to be made of a spring and a piston that can be installed on horizontally slidingly between described base and the cover plate.
Also be fixed with a screwed pipe between described base and the cover plate, one of described piston is passed this screwed pipe and exposes to outside the shell.
Compared with prior art, advantage of the present utility model is:
1, simple in structure, easy and simple to handle, it is to realize the circuit overloads protection by the bimetal leaf thermal deformation, is finished by reset button to reset, and realizes the repeated use of plug.
2, overload protective device is designed to an integrated part independently, realizes fast, easy modularization assembling, simplify the structure of plug, guarantee assembly precision, guarantee the security reliability of plug.
Description of drawings
Fig. 1 is the perspective exploded view of the utility model embodiment.
Fig. 2 is the perspective exploded view of the utility model embodiment overload protective device.
Fig. 3 is the profile schematic diagram of the utility model embodiment.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
In conjunction with Fig. 1, shown in Figure 3; the shell of the utility model overcurrent protection plug is constituted by loam cake 1 and bottom 4; but and between loam cake 1 and the bottom 4 except being provided with the through hole that the power supply source line wears, but also be provided with the through hole of the reset button of supplying apparatus overload protective device.Overload protective device 2 is a global facility independently, and it is provided with in the enclosure by a fixed head 3, and the reset button on it then exposes to outside the shell by described through hole.Three contact pins 5 (zero line contact pin, live wire contact pin and ground connection contact pin) are fixedly installed on the bottom 4.
As shown in Figure 2; described overload protective device 2 mainly is made up of base 205, cover plate 210, static terminal 202, moved end 201, fixed contact 203, moving contact 204, bimetal leaf 211 and reset button etc.; base 205 is combined in cover plate 210, and inside is provided with described static terminal 202, moved end son 201 and bimetal leaf 211 etc.Described dynamic and static terminal 201,202 is arranged on the base 205 abreast, and a fixed contact 203 is housed on the static terminal 202.One end bending of moved end 201, bimetal leaf 211 is fixed on the curved end of moved end 201, and moving contact 204 is housed on the bimetal leaf 211, corresponding to the fixed contact on the static terminal 202 203.Reset button is made up of a back-moving spring 206 and a piston 207, piston 207 is slidably disposed between base 205 and the cover plate 210, and the curved end of one head conflict moved end 201, the other end is passed a screwed pipe 208 and is exposed at the plug outside, and this piston 207 can flatly inwardly or outwards move under the effect of external force or spring force.One insulating spacer 209 also is housed in addition, to separate with two genus sheet 211 insulation on piston 207.Screwed pipe 208 is fixed between base 205 and the cover plate 210.The head of described moved end son 201 and static terminal 202 all exposes to outside the protector, and the zero line contact pin on the bottom 4 is connected with their spot welding respectively with the live wire contact pin.
The operation principle of this plug is as follows: when operating current surpasses rated current, and bimetal leaf 211 temperature distortions, the fixed contact 203 that the moving contact 204 on it breaks away from the static terminal 202 cuts off circuit.Being stabilized in the equilbrium position holding circuit after bimetal leaf 211 distortion disconnects, after circuit is normal, press piston 207, promote the curved end of moved end 201 by piston 207, pulling bimetal leaf 211 makes the moving contact 204 on it contact once more with fixed contact 203, and circuit is conducting again.And piston 207 resets under the effect of back-moving spring 206.
Claims (4)
1. overcurrent protection plug; include loam cake, bottom and overload protective device; on described bottom, be provided with zero line contact pin, live wire contact pin and ground connection contact pin; it is characterized in that: described overload protective device is a global facility independently; it is located in the shell after the combination of loam cake and bottom, and is electrically connected with contact pin on the bottom.
2. overcurrent protection plug as claimed in claim 1, it is characterized in that: described overload protective device includes a base, be provided with moved end and static terminal in the housing after this base and the cover plate combination, spot welding is connected moved end with the live wire contact pin with the zero line contact pin respectively with static terminal; On the described static terminal fixed contact is housed, on of moved end bimetal leaf is housed, the moving contact that matches with described fixed contact is housed on the bimetal leaf; One end bending of described moved end, and be located at base on the reset button of actuatable this curved end action cooperate.
3. overcurrent protection plug as claimed in claim 2 is characterized in that: described reset button mainly is to be made of a spring and a piston that can be installed on horizontally slidingly between described base and the cover plate.
4. overcurrent protection plug as claimed in claim 3 is characterized in that: also be fixed with a screwed pipe between described base and the cover plate, one of described piston is passed this screwed pipe and exposes to outside the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202945537U CN201562844U (en) | 2009-12-16 | 2009-12-16 | Current overload protection plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202945537U CN201562844U (en) | 2009-12-16 | 2009-12-16 | Current overload protection plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201562844U true CN201562844U (en) | 2010-08-25 |
Family
ID=42627990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202945537U Expired - Fee Related CN201562844U (en) | 2009-12-16 | 2009-12-16 | Current overload protection plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201562844U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447180A (en) * | 2010-10-14 | 2012-05-09 | 俞国麟 | Socket with multiple jacks |
-
2009
- 2009-12-16 CN CN2009202945537U patent/CN201562844U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447180A (en) * | 2010-10-14 | 2012-05-09 | 俞国麟 | Socket with multiple jacks |
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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: 20100825 Termination date: 20171216 |