CN201369299Y - Overload protection device of thermomagnetic-type over current tripping device - Google Patents
Overload protection device of thermomagnetic-type over current tripping device Download PDFInfo
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- CN201369299Y CN201369299Y CNU2009200421109U CN200920042110U CN201369299Y CN 201369299 Y CN201369299 Y CN 201369299Y CN U2009200421109 U CNU2009200421109 U CN U2009200421109U CN 200920042110 U CN200920042110 U CN 200920042110U CN 201369299 Y CN201369299 Y CN 201369299Y
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- Prior art keywords
- overload protection
- transiting rod
- pole
- base
- release lever
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Abstract
An overload protection device of a thermomagnetic-type over current tripping device belongs to the technical field of low-voltage apparatus. The over current tripping device comprises a base, a cover, an overload protection device, a short-circuit protection device, and a connecting bar, wherein, the cover is mounted on the base; the overload protection device and the short-circuit protection device are arranged on the base; and the connecting bar is arranged on the base and shared by the overload protection device and the short-circuit protection device. The device is characterized in that the overload protection device comprises a bimetallic strip, a transitional pole, a plurality of transitional pole adjusting screws, a tripping pole and a tripping pole adjusting screw; the bimetallic strip is connected with the connecting bar; the transitional pole is mounted on the base; the transitional pole adjusting screws are arranged on the transitional pole; the tripping pole is mounted on the lateral plate of the transmission mechanism of a circuit breaker and is opposite to the transitional pole; and the tripping pole adjusting screw is arranged on the tripping pole. The utility model has the advantages that the structure is more reasonable and simpler; accommodation time is saved during check stage; and the check efficiency is improved.
Description
Technical field
The utility model relates to the circuit breaker overcurrent trip, relate in particular to a kind of overload protection arrangement of Thermomagnetic type overcurrent trip, belong to the low voltage electrical apparatus technology field.
Background technology
At present, be used in the electromagnetic type overcurrent trip in the low-pressure plastic shell circuit breaker, its operating current setting value can be that fix or adjustable, utilizes knob to regulate draw bar during adjusting usually.Overcurrent trip can be divided into fixed installation formula or modularization installing type again by mounting means.Fixed installation formula release and Shell of circuit breaker are processed as one, in case dispatch from the factory, its release short circuit action protection electric current is unadjustable; And modularization installing type release can be changed at any time as an installed module of circuit breaker, and flexibility is very strong, and release short circuit action protection electric current can be adjusted within the specific limits on demand simultaneously, and the leeway that the user selects is bigger, and it is also convenient to make.
With the thermoelectric magnetic-type overcurrent trip of existing a kind of adjustable type is example; this overcurrent trip comprises base, is located at overload protection arrangement and short-circuit protection on the base respectively; described overload protection arrangement comprises overload adjusting knob, overload adjusting rod, bimetal leaf and push rod; the position that rotation overload adjusting knob can move the overload adjusting rod makes bimetal leaf change to the operating distance of overload adjusting rod.At reset mode, push rod is transshipped adjusting rod to be limited, and during circuit generation overload current, the bimetal leaf heated bending promotes the overload adjusting rod, discharges push rod, removes to promote the trip gear of circuit breaker again by push rod, and circuit breaker is disconnected.
At present, the verification mode that is used in the thermoelectric magnetic-type overcurrent trip in the low-pressure plastic shell circuit breaker generally is such: according to adjustment screw on the different current specification adjusting bimetal leafs and the distance between the draw bar, carry out verification according to standard then, under a lot of situations, owing to there are differences between the circuit breaker, distance between adjustment screw on the bimetal leaf of every circuit breaker and overload adjusting rod is not a steady state value, after verification is finished, the verification personnel can regulate advancing of adjustment screw on the bimetal leaf or move back according to the length of operate time, with the three-pole breaker is example, and the verification personnel will will regulate A respectively, B, the adjustment screw of bimetal leaf on the C three-phase.
The deficiency of this design is: breaker structure is numerous and diverse, and is simultaneously cumbersome in the verification of verification stage, is not easy verification, and verification efficient is low.
Summary of the invention
In view of the problem of above-mentioned existence, the purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of simple in structure, can improve the overload protection arrangement of the Thermomagnetic type overcurrent trip of verification efficient simultaneously in the verification stage.
The purpose of this utility model reaches like this, a kind of overload protection arrangement of Thermomagnetic type overcurrent trip, described overcurrent trip comprises base 1, be installed in lid 9 on the base 1, be located at overload protection arrangement and the short-circuit protection on the base 1 respectively and be located on the base 1 by overload protection arrangement and the shared busbar 2 of short-circuit protection, be characterized in: overload protection arrangement comprises bimetal leaf 4, transiting rod 3, transiting rod adjustment screw 6, release lever 5 and release lever adjustment screw 7, and described bimetal leaf 4 is connected with busbar 2; Described transiting rod 3 is installed on the base 1 movably; Described transiting rod adjustment screw 6 has a plurality of, is arranged on the transiting rod 3 interruption-likely; Described release lever 5 is installed on the transmission mechanism side plate of circuit breaker, and corresponding to the position of transiting rod 3; Described release lever adjustment screw 7 is arranged on the release lever 5, is used to regulate the distance between release lever 5 and the transiting rod 3.
The utility model is formed with one in the top ends of described bimetal leaf 4 and is used for the inclined-plane 41 that matches with described transiting rod 3.
The utility model is arranged at intervals with a plurality of first boss 31 on described transiting rod 3, offer first screw 311 that is used to install transiting rod adjustment screw 6 on each first boss 31.
The described release lever 5 of the utility model is provided with one second boss 51, offers second screw 511 that is used to install release lever adjustment screw 7 on second boss 51.
The utility model adopts said structure, one of advantage that has, has cancelled traditional dropout pin-lift arrangement, and it is rationally simple that structure more becomes; Advantage two, owing on transiting rod 3 and release lever 5, be respectively arranged with adjustment screw, can save the adjusting time in the verification stage, greatly improve verification efficient.
Description of drawings
Fig. 1 is installed in structural representation on the overcurrent trip for the utility model overload protection arrangement.
Fig. 2 is the movement structure schematic diagram of the utility model overload protection arrangement.
Fig. 3 is the structural representation of the utility model overload protection arrangement.
Fig. 4 is the structural representation of bimetal leaf 4 in the utility model overload protection arrangement.
Fig. 5 is applied to structural representation on the four-pole circuit breaker for the utility model.
Fig. 6 is applied to structure cutaway view on the four-pole circuit breaker for the utility model.
Among the figure: 1. base; 2. busbar; 3. transiting rod, 31. first boss, 311. first screws; 4. bimetal leaf, 41. inclined-planes; 5. release lever, 51. second boss, 511. second screws; 6. transiting rod adjustment screw; 7. release lever adjustment screw; 8. adjusting knob; 9. lid, 10. transmission mechanism side plate.
Embodiment
By the description of applicant, will help to understand the utility model more, and good effect of the present utility model is embodied more, but embodiment should not be considered as the restriction to some extent to the utility model scheme embodiment.
See also Fig. 3 and in conjunction with Fig. 1, described bimetal leaf 4 is riveted on the busbar 2, busbar 2 usefulness screws are fastened on the base 1, transiting rod 3 is installed in base 1 movably, be arranged at intervals with a plurality of transiting rod adjustment screw 6 on transiting rod 3, circuit breaker trip bar 5 is provided with a release lever adjustment screw 7.
See also Fig. 4, Figure 4 shows that the structural representation of bimetal leaf 4.Top ends at bimetal leaf 4 forms an inclined-plane 41, and bimetal leaf 4 acts on the transiting rod 3 by this inclined-plane 41, can realize the disconnection of circuit breaker.
See also Fig. 1; Fig. 2; Fig. 3 and Fig. 4; a kind of short-circuit protection of Thermomagnetic type overcurrent trip (very routine) with four; described overcurrent trip comprises base 1; be installed in the lid 9 of base 1 upper end; be located at overload protection arrangement and short-circuit protection on the base 1 respectively; and be located on the base 1 by overload protection arrangement and the shared busbar 2 of short-circuit protection; described overload protection arrangement comprises bimetal leaf 4; transiting rod 3; transiting rod adjustment screw 6; release lever 5; with release lever adjustment screw 7; in the present embodiment for also comprising an adjusting knob 8; described bimetal leaf 4 is riveted on the busbar 2; top ends at bimetal leaf 4 is formed with an inclined-plane 41; this inclined-plane 41 is corresponding with the position of transiting rod 3 on being installed in base 1; be arranged at intervals with a plurality of first boss 31 on the transiting rod 3; offer first screw 311 on each first boss 31; on first screw 311, be installed with transiting rod adjustment screw 6; adjusting knob 8 be installed in cover on 9 and and transiting rod 3 between constitute and be in transmission connection; when rotation adjusting knob 8; can drive transiting rod 3 and do axial motion; owing to fit with transiting rod 3 in inclined-plane 41; also be that corresponding transiting rod adjustment screw 6 is fitted on inclined-plane 41 and the transiting rod 3; when transiting rod 3 is done axial motion; because the effect on inclined-plane 41; force transiting rod 3 to do rotatablely moving radially; adjust transiting rod 3 and be installed in distance between the release lever 5 on the circuit breaker transmission mechanism side plate 10 with this, thereby can realize adjusting difference overload operating current value.Because the distance between transiting rod 3 and each utmost point bimetal leaf 4 there are differences, therefore can be used for regulating distance between the inclined-plane 41 of transiting rod 3 and bimetal leaf 4 by transiting rod adjustment screw 6, being convenient to compensate the difference that exists between transiting rod 3 and each utmost point bimetal leaf 4, also is initial adjustment.Release lever 5 is provided with one second boss 51, offer one second screw 511 on second boss 51, be installed with a release lever adjustment screw 7 on second screw 511, can be used for regulating the distance of release lever 5 and transiting rod 3 by release lever adjustment screw 7, to satisfy different current specification requirements.Simultaneously in the verification stage, also just only need to regulate advancing of release lever adjustment screw 7 or move back according to the length of operate time, also promptly regulate the distance between release lever 5 and the transiting rod, so just saved the adjusting time, improve verification efficient.
Because bimetal leaf 4 is riveted on the busbar 2, when overload current takes place when, along with busbar 2 passes through electric current, can produce certain heat, bimetal leaf 4 temperature distortions, because bimetal leaf 4 is to be formed by two kinds of metal composite with different heat expansion coefficient, its back that is heated is to the bent distortion of a lateral bending, bimetal leaf 4 is promoting transiting rod adjustment screw 6 by the inclined-plane on it 41 behind the heated bending, and then promote transiting rod 3, along with the continuous increase of bimetal leaf 4 bendings, transiting rod 3 contacts with release lever adjustment screw 7 on the release lever 5, drive release lever 5 actions, circuit breaker disconnects.
The utility model is applicable to three utmost points or four-pole circuit breaker simultaneously, Fig. 5, Figure 6 shows that the utility model is applied to the structural representation on the four-pole circuit breaker, and is only for reference.
Claims (4)
1, a kind of overload protection arrangement of Thermomagnetic type overcurrent trip, described overcurrent trip comprises base (1), be installed in the lid (9) on the base (1), be located at overload protection arrangement and short-circuit protection on the base (1) respectively, and be located on the base (1) by overload protection arrangement and the shared busbar (2) of short-circuit protection, it is characterized in that overload protection arrangement comprises bimetal leaf (4), transiting rod (3), transiting rod adjustment screw (6), release lever (5), with release lever adjustment screw (7), described bimetal leaf (4) is connected with busbar (2); Described transiting rod (3) is installed on the base (1) movably; Described transiting rod adjustment screw (6) has a plurality of, is arranged on the transiting rod (3) interruption-likely; Described release lever (5) is installed on the transmission mechanism side plate of circuit breaker, and corresponding to the position of transiting rod (3); Described release lever adjustment screw (7) is arranged on the release lever (5), is used to regulate the distance between release lever (5) and the transiting rod (3).
2, the overload protection arrangement of Thermomagnetic type overcurrent trip according to claim 1 is characterized in that top ends at described bimetal leaf (4) is formed with one and is used for the inclined-plane (41) that matches with described transiting rod (3).
3, the overload protection arrangement of Thermomagnetic type overcurrent trip according to claim 1; it is characterized in that on described transiting rod (3), being arranged at intervals with a plurality of first boss (31), on each first boss (31), offer first screw (311) that is used to install transiting rod adjustment screw (6).
4, the overload protection arrangement of Thermomagnetic type overcurrent trip according to claim 1; it is characterized in that described release lever (5) is provided with one second boss (51), offers second screw (511) that is used to install release lever adjustment screw (7) on second boss (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200421109U CN201369299Y (en) | 2009-03-20 | 2009-03-20 | Overload protection device of thermomagnetic-type over current tripping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200421109U CN201369299Y (en) | 2009-03-20 | 2009-03-20 | Overload protection device of thermomagnetic-type over current tripping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201369299Y true CN201369299Y (en) | 2009-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200421109U Expired - Lifetime CN201369299Y (en) | 2009-03-20 | 2009-03-20 | Overload protection device of thermomagnetic-type over current tripping device |
Country Status (1)
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| CN (1) | CN201369299Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916694A (en) * | 2010-08-17 | 2010-12-15 | 常熟开关制造有限公司(原常熟开关厂） | Current regulating device of thermomagnetic release of circuit breaker |
| CN102867707A (en) * | 2012-09-21 | 2013-01-09 | 德力西电气有限公司 | Method and device for regulating three-phase bimetallic strips to be synchronous during releasing under heat overload |
| CN103606493A (en) * | 2013-12-02 | 2014-02-26 | 南京工程学院 | Thermomagnetic release with thermal compensation function |
| CN104008934A (en) * | 2014-04-30 | 2014-08-27 | 浙江之路电气有限公司 | Molded case circuit breaker |
| CN104008933A (en) * | 2013-02-20 | 2014-08-27 | 西门子公司 | Thermo magnetic trip unit for a circuit breaker and circuit breaker |
-
2009
- 2009-03-20 CN CNU2009200421109U patent/CN201369299Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916694A (en) * | 2010-08-17 | 2010-12-15 | 常熟开关制造有限公司(原常熟开关厂） | Current regulating device of thermomagnetic release of circuit breaker |
| CN101916694B (en) * | 2010-08-17 | 2012-07-11 | 常熟开关制造有限公司(原常熟开关厂） | Current regulating device of thermomagnetic release of circuit breaker |
| CN102867707A (en) * | 2012-09-21 | 2013-01-09 | 德力西电气有限公司 | Method and device for regulating three-phase bimetallic strips to be synchronous during releasing under heat overload |
| CN102867707B (en) * | 2012-09-21 | 2015-10-28 | 德力西电气有限公司 | A kind ofly regulate the thermal overload dropout three-phase synchronous method of two gold and device thereof |
| CN104008933A (en) * | 2013-02-20 | 2014-08-27 | 西门子公司 | Thermo magnetic trip unit for a circuit breaker and circuit breaker |
| CN103606493A (en) * | 2013-12-02 | 2014-02-26 | 南京工程学院 | Thermomagnetic release with thermal compensation function |
| CN104008934A (en) * | 2014-04-30 | 2014-08-27 | 浙江之路电气有限公司 | Molded case circuit breaker |
| CN104008934B (en) * | 2014-04-30 | 2016-06-29 | 浙江之路电气有限公司 | Breaker of plastic casing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091223 |
|
| CX01 | Expiry of patent term |