CN2924775Y - Overcurrent short circuit protection device - Google Patents
Overcurrent short circuit protection device Download PDFInfo
- Publication number
- CN2924775Y CN2924775Y CN 200620071379 CN200620071379U CN2924775Y CN 2924775 Y CN2924775 Y CN 2924775Y CN 200620071379 CN200620071379 CN 200620071379 CN 200620071379 U CN200620071379 U CN 200620071379U CN 2924775 Y CN2924775 Y CN 2924775Y
- Authority
- CN
- China
- Prior art keywords
- iron core
- static iron
- coil
- moving armature
- circuit 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 discloses an over-current short-circuit protection device, which includes a static iron core, coils which are arranged on the static iron core, a moving armature, an edge frame and a reset torsion spring; the static iron core is formed by the intercalation of a plurality of F-shaped iron cores; the static iron core is provided with an L1 coil, an L2 coil and an L3 coil from top to bottom in turn; the static iron core is arranged on a plastic shell body and is pressed and fixed by an insulation fixed board; the moving armature device is arranged on the fixed board with the slant swing pull-in or linear pull-in. The utility model has the advantages of that the volume is small, and the sampling voltage cooperates with the electronic circuit to realize the working current grading and the sub-block is adjustable.
Description
Technical field
The utility model relates to a kind of new structure overcurrent short-circuit protection; it is applicable to single phase alternating current (A.C.) 220V and exchanges 380V; two-phase two wires, phase three-wire three, four phase four line, operating current are made the overcurrent short-circuit protection and are used in 800A and following mold cased circuit breaker, residual current operated protective device and low-voltage automatic switche.
Background technology
The overcurrent short-circuit protection that all mold cased circuit breaker, residual current operated protective device and low-voltage automatic switches use on the current market; all adopt lubricating cup formula or double-metal sheet type as overflow protecting element; these component sizes are big; taken and moulded the bigger space of shell; its operate time of protection, electric current are difficult to accomplish unanimity; double-metal sheet type is comparatively responsive to ambient temperature, and the time of overcurrent protection and operating value all are difficult to do poor reliability.Its operating current of protector that adopts lubricating cup formula or double-metal sheet type to make as overflow protecting element is all good in the pre-adjustment of dispatching from the factory, and the user is difficult to adjust when reality is used.
Summary of the invention
The flow short-circuit excessively that the objective of the invention is a kind of new construction of confession, new layout is the protective device of one; its operating current is adjusted at any time, is set according to the load needs when the actual use of user; product is the judgment device running status automatically, constantly equipment is protected applied range.
The utility model solves with following technical scheme: a kind of overcurrent short-circuit protection, and it comprises static iron core, the coil of device on static iron core, moving armature, insulation framework, draws torsion spring again; It is characterized in that: static iron core is formed inserting by a plurality of F sections cores, and L1 coil, L2 coil, L3 coil are housed on static iron core from top to bottom successively; Static iron core is contained in to mould on the housing and also is fixed with the insulation fixed head; The moving armature device is inclined-plane swing type adhesive or orthoscopic adhesive on fixed head.
The moving armature of described inclined-plane swing adhesive is the U-shaped that the upper end has bending on one side, has one fixingly to use bending thereon; The moving armature tilting gearing is on plastic casing, and the upper surface of fixed head has projection upwards, and needle roller passes two ends and is through in the blind hole of fixed head projection from the groove of bending, at the one end reduction torsion spring is housed, and moving armature can rotate around needle roller.
The utility model has the advantages that: during actual the use, remove former lubricating cup or bimetal leaf and overcurrent, the short circuit protection component moulded in the shell, take former segment space this overcurrent short-circuit protection of packing into, the purpose of so just reached the reduction consumptive material, having dwindled volume.The operating current user can adjust according to the load needs.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is first example structure schematic diagram of the utility model;
Fig. 2 is the A-A profile of Fig. 1;
Fig. 3 is second example structure schematic diagram;
Fig. 4 is the B-B profile of Fig. 3.
Among the figure: 1, F sections core, 2, moving armature, 2-1, bending, 3, insulation framework, 4, the L1 coil, 5, the L2 coil, 6, the L3 coil, 7, reduction torsion spring, 8, needle roller, 9, fixed head, 9-1, projection, 10, mould housing, 11, screw, 12, nut.
Embodiment
As shown in Figure 1 and Figure 2, this overcurrent short-circuit protection comprises static iron core 1, and static iron core 1 is formed inserting by a plurality of F sections cores.L1 coil 4, L2 coil 5, L3 coil 6 are housed on static iron core from top to bottom successively, and the static iron core device is being moulded on the shell 10 and is being fixed with fixed head 9.Moving armature is to be the U type that the upper end has bending on one side, being the inclined-plane swing type is contained on the fixed head 9, one bending 2-1 is arranged on moving armature 2, tongue for dress needle roller 8 is arranged on the bending 2-1, protruding 9-1 is upwards arranged on the plate face of fixed head 9, and needle roller 8 passes from the bending groove of moving armature, and its two ends are through in the blind hole of protruding 9-1 on the fixed head, at the one end reduction torsion spring 7 is housed also, moving armature can rotate around needle roller 8.
During installation, remove former mould lubricating cup or bimetal leaf and overcurrent in the shell, short-circuit component, dress the utility model is packed in the former segment space.
Operation principle is as follows:
When L1 coil 4 passed through certain operating current, under the effect of electric current, iron core produced the electromagnetic field (2 districts are divided in magnetic field: A district and B district) of certain force, at this moment B district L2 coil 5, generation certain voltage U
2, U
3, U
2, U
3Can be used as the sampling reference voltage of overcurrent protection, also can be used as the operating voltage of protective circuit.The sampling reference voltage cooperates the electronic circuit of setting up, when electric current reaches setting protection value, and U
2, U
3Driving electronics, electronic circuit produces one by calutron and hits power, and the release that rushes open mold cased circuit breaker disconnects it rapidly and cuts off the electricity supply, reach the purpose of protection.
When the electric current that passes through when L1 coil 4 reached certain value or set point, A district magnetic field suction was inhaled moving moving armature, and any point of 2, two operating points of moving armature is opened the release of mold cased circuit breaker, circuit breaker is disconnected rapidly cut off the electricity supply, and reaches the purpose of protection.
This overcurrent sample short-circuit protection is an one, and promptly the A district is the short-circuit protection part, and the B district is that overcurrent sample and working power are extracted part, and two functions are finished by a structure, reduce to take up room and volume.
Utilize this device can make 800A and following one pole, two utmost points, three utmost points, four utmost point mold cased circuit breaker or residual current operated protective devices.
As shown in Figure 3, Figure 4, moving armature is the orthoscopic adhesive, and the moving armature structure is described in detail in the patent No. is 03219227.4 technical scheme, so do not describe in detail.
Claims (2)
1, a kind of overcurrent short-circuit protection, it comprises static iron core (1), the coil of device on static iron core, moving armature (2), insulation framework (3), draws torsion spring (7) again; It is characterized in that: static iron core (1) is formed inserting by a plurality of F sections cores, and L1 coil (4), L2 coil (5) L3 coil (6) are housed on static iron core (1) from top to bottom successively; Static iron core (1) is contained in to mould on the housing (10) and with insulation fixed head (9) and is fixed; Moving armature (2) device is on fixed head (9), and moving armature is inclined-plane swing type adhesive or orthoscopic adhesive.
2, a kind of overcurrent short-circuit protection according to claim 1 is characterized in that: the moving armature (2) of described inclined-plane swing type adhesive has one to fix with bending (2-1) thereon Yi Bian be the U-shaped that there is bending the upper end; The moving armature tilting gearing is on plastic casing (10), the upper surface of fixed head (9) has projection (9-1) upwards, needle roller (8) passes two ends and is inserted in the blind hole of projection (9-1) from the groove of bending (2-1), at the one end reduction torsion spring (7) is housed, moving armature (2) can rotate around needle roller (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620071379 CN2924775Y (en) | 2006-05-10 | 2006-05-10 | Overcurrent short circuit protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620071379 CN2924775Y (en) | 2006-05-10 | 2006-05-10 | Overcurrent short circuit protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2924775Y true CN2924775Y (en) | 2007-07-18 |
Family
ID=38261203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620071379 Expired - Fee Related CN2924775Y (en) | 2006-05-10 | 2006-05-10 | Overcurrent short circuit protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2924775Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280293A (en) * | 2013-06-19 | 2013-09-04 | 高海生 | Core valve type reactor |
-
2006
- 2006-05-10 CN CN 200620071379 patent/CN2924775Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280293A (en) * | 2013-06-19 | 2013-09-04 | 高海生 | Core valve type reactor |
| CN103280293B (en) * | 2013-06-19 | 2015-08-19 | 高海生 | A kind of core valve type reactor |
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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: 20070718 Termination date: 20120510 |