CN2681317Y - Earth fault protecting device - Google Patents
Earth fault protecting device Download PDFInfo
- Publication number
- CN2681317Y CN2681317Y CN 200420021312 CN200420021312U CN2681317Y CN 2681317 Y CN2681317 Y CN 2681317Y CN 200420021312 CN200420021312 CN 200420021312 CN 200420021312 U CN200420021312 U CN 200420021312U CN 2681317 Y CN2681317 Y CN 2681317Y
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- CN
- China
- Prior art keywords
- spring
- reset
- movable contact
- action
- button
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses an earth fault protecting device, mainly comprising a casing, an input end, a load end, a creepage detecting device and a reset tripping device. The reset tripping device comprises an electromagnetic coil, an iron core, a reset button, a button shaft core, a movable contact piece, a static contact piece, a movable contact rack, an L shaped gusset plate, a reverse direction movable contact piece and a reverse direction static contact piece. The end of the button shaft core is provided with a thin shaft core. The thin shaft core is provided with a convex platform. The long side edge of the L shaped gusset plate providing with a through hole is inserted into the penetrable hole of the gusset plate arranged on the horizontal direction of the movable contact rack. The reverse direction movable contact piece and a pair of reverse direction static contact pieces are provided under the movable contact rack. When the input end of the earth fault protecting device is correctly connected with the load end, the reset button can reset. When the input end of the earth fault protecting device is reversely connected with the load end, the reset button does not reset and alarms the user wrongly connecting. Therefore the utility model is safer in use.
Description
Technical field
The utility model relates to a kind of earth-fault protection.
Background technology
Existing earth-fault protection generally comprises housing, input terminal, load wiring end, leakage current detection circuit, tripping mechanism resets; the load wiring end realizes and being connected and disconnection of input that by the tripping mechanism that resets load comprises wiring load and socket load.When user installation is used; though pointed out the wiring position of input terminal and load wiring end definitely with eye-catching indicating modes such as literal; but in the physical cabling process; still the possibility that has the backward error wiring; be that input terminal and load wiring end are connect mutually instead; and this kind situation is in case take place; no matter the reset button of earth-fault protection is in reset mode or trip status; the socket load will be not protected, and this earth-fault protection has also just lost its original protection meaning.
Summary of the invention
The purpose of this utility model provides a kind of earth-fault protection, and when the input terminal and the load wiring end of this earth-fault protection connect inverse time mutually, reset button can not be reset when pressing reset button, remind user's wiring wrong.
For achieving the above object; the utility model is by the following technical solutions: a kind of earth-fault protection; mainly comprise housing; input; load end; leak current detection device; tripping mechanism resets; the described tripping mechanism that resets comprises solenoid; iron core; reset button; the push button shaft core; movable contact spring; static contact; action contact frame; L shaped buckle; reverse movable contact spring; reverse static contact; reset button is fixedlyed connected with an end of push button shaft core; reset button is provided with the push-button reset spring; the other end of push button shaft core is provided with thin axle core; thin axle core is provided with boss; the push button shaft core passes the through hole that the action contact frame vertical direction is provided with; action contact frame is provided with the action contact frame back-moving spring; the elastic force of push-button reset spring is greater than the elastic force of action contact frame back-moving spring; the top of action contact frame is respectively equipped with movable contact spring and static contact; the action contact frame horizontal direction is provided with buckle and walks the hole; being provided with the buckle that the L shaped buckle long side of through hole is inserted in action contact frame walks in the hole; the short side of L shaped buckle iron core one end interior with being located at solenoid contacts; be provided with the buckle back-moving spring between the short side of L shaped buckle and the action contact frame; the below of action contact frame is provided with reverse movable contact spring; oppositely movable contact spring is provided with reverse movable contact spring back-moving spring, and the support of housing is provided with a pair of reverse static contact.
The back constitutes supplementary ground electrode because a pair of reverse static contact of this earth-fault protection is connected with the two poles of the earth of circuit output end in the device, when the input terminal of this earth-fault protection and load wiring end during by correct wiring, press reset button, because the boss of push button shaft core blocks L shaped buckle, thereby driving action contact frame moves downward, oppositely movable contact spring contacts with reverse static contact, the conducting supplementary ground electrode, cause the iron core action in the solenoid, iron core promotes L shaped buckle action, the boss of push button shaft core passes the through hole of L shaped buckle, discharge reset button, oppositely movable contact spring breaks away from reverse static contact under the effect of reverse movable contact spring back-moving spring, disconnects supplementary ground electrode, and L shaped buckle resets under the effect of back-moving spring, the boss of push button shaft core blocks L shaped buckle again, move upward thereby drive action contact frame under the effect of push-button reset spring, make movable contact spring and static contact closure, this moment, earth-fault protection was in reset mode; When the input terminal and the load wiring end of this earth-fault protection connect inverse time mutually; press reset button; since the load wiring end not with this earth-fault protection in electronic circuit any connection arranged; can't the conducting supplementary ground electrode; L shaped buckle akinesia; the boss of push button shaft core can't pass the through hole of L shaped buckle all the time; discharge reset button; reset button can come back to original position again; make earth-fault protection be in trip status all the time; thereby reach the purpose that reset button can not be reset, remind user's wiring wrong, therefore use safer.
The utility model will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the general structure schematic diagram of a kind of embodiment of the utility model earth-fault protection.
Fig. 2 is the A-A cutaway view among Fig. 1.
Embodiment
As Fig. 1; shown in Figure 2; a kind of embodiment of the utility model earth-fault protection; mainly comprise housing; input terminal; the load wiring end; socket; leak current detection device; tripping mechanism resets; socket is connected with the load wiring end; wherein leak current detection device is made up of printed circuit board (PCB) 20 and ring current transformer 21; the described tripping mechanism that resets comprises solenoid; iron core 10; reset button 1; push button shaft core 2; movable contact spring; static contact; action contact frame 6; L shaped buckle 9; reverse movable contact spring 14; reverse static contact 17; reset button 1 is fixedlyed connected with an end of push button shaft core 2; be provided with push-button reset spring 3 between the support 4 of reset button 1 and housing 11; the other end of push button shaft core 2 is provided with thin axle core 7; thin axle core 7 is provided with boss 8; push button shaft core 2 passes the through hole that action contact frame 6 vertical direction are provided with; be provided with action contact frame back-moving spring 5 between the support 4 of action contact frame 6 and housing 11; the elastic force of push-button reset spring 3 is greater than the elastic force of action contact frame back-moving spring 5; the top of action contact frame 6 is respectively equipped with movable contact spring and static contact; action contact frame 6 horizontal directions are provided with buckle and walk the hole; L shaped buckle 9 long sides that are provided with through hole 16 are inserted in the buckle of action contact frame 6 and walk in the hole; L shaped buckle 9 can be walked move left and right in the hole at the buckle of action contact frame 6; the short side of L shaped buckle 9 iron core 10 one ends interior with being located at solenoid contact; be provided with buckle back-moving spring 13 between the short side of L shaped buckle 9 and the action contact frame 6; the below of action contact frame 6 is provided with reverse movable contact spring 14; oppositely movable contact spring 14 is provided with reverse movable contact spring back-moving spring 15; the support 19 of housing 11 is provided with a pair of reverse static contact 17; a pair of reverse static contact 17 is connected with the two poles of the earth of printed circuit board (PCB) 20 outputs respectively; thereby formation supplementary ground electrode; be equivalent to take place earth fault after a pair of reverse static contact 17 conductings; leak current detection device can detect the leakage current signal, thereby powers to solenoid.For iron core 10 is resetted better, iron core 10 can be provided with iron core return-spring 12.
The operation principle of above-mentioned earth-fault protection is: when the input terminal of this earth-fault protection and load wiring end during by correct wiring, press reset button 1, because the boss 8 of push button shaft core 2 blocks L shaped buckle 9, thereby driving action contact frame 6 moves downward, oppositely movable contact spring 14 contacts with reverse static contact 17, the conducting supplementary ground electrode, leak current detection device detects the leakage current signal, cause iron core 10 actions in the solenoid, iron core 10 promotes L shaped buckle 9 actions, the boss 8 of push button shaft core 2 passes the through hole 16 of L shaped buckle 9, discharge reset button 1, oppositely movable contact spring 14 breaks away from reverse static contact 17 under the effect of reverse movable contact spring back-moving spring 15, disconnects supplementary ground electrode, and L shaped buckle 9 resets under the effect of back-moving spring 13, the boss 8 of push button shaft core 2 blocks L shaped buckle 9 again, move upward thereby drive action contact frame 6 under the effect of push-button reset spring 3, make movable contact spring and static contact closure, this moment, earth-fault protection was in reset mode; When the input terminal and the load wiring end of this earth-fault protection connect inverse time mutually; press reset button 1; since the load wiring end not with this earth-fault protection in electronic circuit any connection arranged; can't the conducting supplementary ground electrode; leak current detection device can't detect the leakage current signal; can't cause iron core 10 actions in the solenoid; therefore L shaped buckle 9 akinesias; the boss 8 of push button shaft core 2 can't pass the through hole 16 of L shaped buckle 9 all the time; discharge reset button 1; reset button 1 can come back to original position again; earth-fault protection is in trip status all the time and can't resets, thereby reminds user's wiring wrong.
Claims (2)
1; a kind of earth-fault protection; mainly comprise housing; input terminal; the load wiring end; leak current detection device; tripping mechanism resets; it is characterized in that: the described tripping mechanism that resets comprises solenoid; iron core (10); reset button (1); push button shaft core (2); movable contact spring; static contact; action contact frame (6); L shaped buckle (9); reverse movable contact spring (14); reverse static contact (17); reset button (1) is fixedlyed connected with an end of push button shaft core (2); reset button (1) is provided with push-button reset spring (3); the other end of push button shaft core (2) is provided with thin axle core (7); thin axle core (7) is provided with boss (8); push button shaft core (2) passes the through hole that action contact frame (6) vertical direction is provided with; action contact frame (6) is provided with action contact frame back-moving spring (5); the elastic force of push-button reset spring (3) is greater than the elastic force of action contact frame back-moving spring (5); the top of action contact frame (6) is respectively equipped with movable contact spring and static contact; action contact frame (6) horizontal direction is provided with buckle and walks the hole; L shaped buckle (9) long side that is provided with through hole (16) is inserted in the buckle of action contact frame (6) and walks in the hole; the short side of L shaped buckle (9) iron core (10) one ends interior with being located at solenoid contact; be provided with buckle back-moving spring (13) between the short side of L shaped buckle (9) and the action contact frame (6); the below of action contact frame (6) is provided with reverse movable contact spring (14); oppositely movable contact spring (14) is provided with reverse movable contact spring back-moving spring (15), and the support (19) of housing (11) is provided with a pair of reverse static contact (17).
2, earth-fault protection according to claim 1 is characterized in that: described iron core (10) is provided with iron core return-spring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420021312 CN2681317Y (en) | 2004-03-22 | 2004-03-22 | Earth fault protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420021312 CN2681317Y (en) | 2004-03-22 | 2004-03-22 | Earth fault protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2681317Y true CN2681317Y (en) | 2005-02-23 |
Family
ID=34606839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420021312 Expired - Fee Related CN2681317Y (en) | 2004-03-22 | 2004-03-22 | Earth fault protecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2681317Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464389C (en) * | 2006-02-15 | 2009-02-25 | 温州永泰电器有限公司 | Socket type earth-fault breaker |
-
2004
- 2004-03-22 CN CN 200420021312 patent/CN2681317Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464389C (en) * | 2006-02-15 | 2009-02-25 | 温州永泰电器有限公司 | Socket type earth-fault breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050223 |