CN203674124U - Operation mechanism of miniaturized circuit breaker - Google Patents
Operation mechanism of miniaturized circuit breaker Download PDFInfo
- Publication number
- CN203674124U CN203674124U CN201420026909.XU CN201420026909U CN203674124U CN 203674124 U CN203674124 U CN 203674124U CN 201420026909 U CN201420026909 U CN 201420026909U CN 203674124 U CN203674124 U CN 203674124U
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- China
- Prior art keywords
- contact supporting
- tripping
- snap close
- contact
- circuit breaker
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Abstract
The utility model discloses an operation mechanism of a miniaturized circuit breaker. The operation mechanism comprises a housing, a handle, a U-shaped connection rod, a contact support, a jump buckle, a lock catch, a pull bar, a moving contact, a meal sheet and an electromagnetic device. The housing is provided with a rotation shaft in an insertion mode; the central portion of the contact support is hinged to the rotation shaft; the upper end of the contact support is provided with a downward inclined long groove hole; one end of the U-shaped connection rod is hinged to the inner end of the handle for fixation; the other end of the U-shaped connection rod slides in the long groove hole; and the upper end surface of the lock latch is correspondingly provided with a V-shaped groove capable of forming touch abutting with the end, which slides in the long groove hole, of the U-shaped connection rod, such that the U-shaped connection rod can realize linkage with the lock catch through sliding in the long groove hole. Besides, the end, which is linked with the lock latch, of the U-shaped connection rod is changed to a movable end from a fixed end, so that the trip sling rate of a circuit breaker during a fast switching-on process can be substantially reduced, the switching-off motion of the circuit breaker can be more rapid, and the operation is more stable and reliable.
Description
Technical field
The utility model relates to a kind of miniature circuit breaker, is specifically related to the operating mechanism of miniature circuit breaker.
Background technology
At present, the operating mechanism of miniature circuit breaker all includes housing conventionally, handle, contact supporting, tripping, snap close, movable contact is first-class, the outer end of described handle is generally operating side, the inner of described handle is hinged on housing, for making the corresponding band moving contact rack of rotational of handle, the corresponding rotation of tripping and snap close etc., thereby realize closing of circuit breaker, sub-switching operation, existing structure is all U-shaped connecting rods that a linkage is set between described handle and snap close, one end of described U-shaped connecting rod and handle are inner hinged fixing, the other end of described U-shaped connecting rod and snap close be also hinged fixing, so just equal the two ends of U-shaped connecting rod all to fix spacing dead, because of the existence of the foozle of U-shaped connecting rod own, existing this structure can make U-shaped connecting rod close fast at circuit breaker, in separating brake process, lose the compensation space to foozle own, thereby increase the slide fastener probability of circuit breaker in rapid closing process, and greatly reduce speed and the stability of breaker open operation action.Separately, the snap close on existing miniature circuit breaker, all not with back-moving spring, so also can increase the slide fastener probability of circuit breaker in rapid closing process.
Summary of the invention
For the deficiencies in the prior art, the utility model provides one can effectively reduce breaker closing slide fastener probability, and makes the separating brake action of circuit breaker quicker, operates more reliable and more stable small type circuit breaker operating mechanism.
For achieving the above object, the utility model provides a kind of operating mechanism of miniature circuit breaker, comprise housing, handle, U-shaped connecting rod, contact supporting, tripping, snap close, pull bar, moving contact, sheet metal, calutron, the outer end of described handle is operating side, the inner of described handle is hinged on housing, between described handle and housing, be also provided with handle back-moving spring, on described housing, be fitted with a rotating shaft, the middle part of described contact supporting is articulated with in described rotating shaft, the hinged lower end that is installed in contact supporting of described moving contact, described sheet metal and calutron correspondence are located at the left and right sides of moving contact, the upper end of described contact supporting is provided with a downward-sloping long slot bore, one end of described U-shaped connecting rod and handle are inner hinged fixing, the other end of described U-shaped connecting rod slides in described long slot bore, between described contact supporting and housing, be also provided with contact supporting reset tension spring, the upper end hook of one end of described contact supporting reset tension spring and contact supporting is joined fixing, described housing below handle, be installed with one with the fixing extension spring fixed leg of the contact supporting reset tension spring other end, on described contact supporting, be also provided with the first Rotational Cylindrical and the second Rotational Cylindrical, the corresponding V-shaped groove that offers that end formation touching butt that can slide with U-shaped connecting rod in long slot bore on the upper surface of described snap close, on snap close, the right-hand member of V-shaped groove is hinged in the first Rotational Cylindrical of contact supporting relatively, on snap close, the left end of V-shaped groove is formed with a tip relatively, described tripping shape triangular in shape, hinged being set in rotating shaft in middle part of tripping, first jiao of described tripping is positioned at the left side of snap close, and on first jiao of described tripping corresponding be provided with can with described snap close on tip form the spacing tripping groove of butt, fix with one end of pull bar for second jiao of described tripping, the other end of described pull bar is positioned at sheet metal right-hand member, and pulled by sheet metal in the time of sheet metal heated bending, in the second Rotational Cylindrical of described contact supporting, be set with lock tripping reduction torsion spring, and the two ends of described lock tripping reduction torsion spring respectively with the triangle of described tripping, on snap close, the right-hand member of V-shaped groove fixes relatively.
The beneficial effects of the utility model are: adopt said structure, because one end of U-shaped connecting rod provided by the utility model is inner hinged fixing with handle, the other end is to slide in the long slot bore of contact supporting, the corresponding V-shaped groove that offers that end formation touching butt that can slide with U-shaped connecting rod in long slot bore on the upper surface of described snap close, therefore described U-shaped connecting rod can be realized and the interlock of snap close by the slip in long slot bore, so not only can effectively guarantee the interlock of handle and snap close etc., and change that end of U-shaped connecting rod and snap close interlock into movable end by stiff end, can make U-shaped connecting rod close fast at circuit breaker, in separating brake process, can effectively make up itself and manufacture the error producing, and then greatly reduce the slide fastener probability of circuit breaker in rapid closing process, and make the separating brake action of circuit breaker quicker, operate more reliable and more stable.Separately, because tripping provided by the utility model and snap close are to reset by same lock tripping reduction torsion spring, therefore can further reduce like this slide fastener probability of circuit breaker in rapid closing process.
The utility model can further be set to also be set with contact reduction torsion spring in described rotating shaft, the two ends of described contact reduction torsion spring connect with contact supporting, moving contact respectively, on described moving contact, be also provided with an arc groove, on contact supporting, corresponding being provided with described arc groove forms the support projection that locating slip coordinates.
Adopt said structure, coordinate with the locating slip of arc groove by described contact reduction torsion spring and support projection are set, can make the operation of circuit breaker more reliable and more stable.
The utility model also can further be set to be fixedly hinged by detachable buckle between described moving contact and contact supporting.
Adopt said structure, it is hinged that described moving contact and contact supporting adopt dismountable buckle to fix, and can make the handling between moving contact and contact supporting more convenient.
The utility model also can further be set to also be provided with the spacing block set that the rotation of described contact supporting is formed to spacing butt on described housing.
Adopt said structure, spacing block set is set, can make contact supporting after rotateing in place can and housing between form reliably spacing, thereby make the operation of circuit breaker more reliable and more stable.
The utility model also can further be set to also be connected with on first jiao of described tripping the block that extends to snap close top and described snap close is formed to axial limiting, and on described block relatively the position of snap close tip be provided with one section of angled transition face.
Adopt said structure, the block of setting up, can effectively prevent from latching in axial endplay in the quick splitting or integrating lock of circuit breaker process; The another angled transition face arranging, can play effective protection to the tip of snap close.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is local structural graph of the present utility model;
Fig. 4 is partial structurtes explosive view of the present utility model;
Fig. 5 is the structural representation of tripping in the utility model.
Embodiment
As Fig. 1, 2, 3, 4, shown in 5, provide a kind of operating mechanism of miniature circuit breaker, comprised housing 1, handle 2, U-shaped connecting rod 3, contact supporting 4, tripping 5, snap close 6, pull bar 7, moving contact 8, sheet metal 9, calutron 10, the 21Wei operating side, outer end of described handle 2, the inner 22 of described handle 2 is hinged on housing 1, between described handle 2 and housing 1, be also provided with handle back-moving spring 11, on described housing 1, be fitted with a rotating shaft 12, the middle part of described contact supporting 4 is articulated with in described rotating shaft 12, on described housing 1, be also provided with the spacing block set 13 that the rotation of described contact supporting 4 is formed to spacing butt, described moving contact 8 is by the hinged lower end that is installed in contact supporting 4 of detachable buckle 14, described sheet metal 9 and calutron 10 correspondences are located at the left and right sides of moving contact 8, in described rotating shaft 12, be also set with contact reduction torsion spring 15, the two ends of described contact reduction torsion spring 15 respectively with contact supporting 4, moving contact 8 connects, and is also provided with an arc groove 81 on described moving contact 8, and on contact supporting 4, corresponding being provided with described arc groove 81 forms the support projection 41 that locating slip coordinates.The upper end of described contact supporting 4 is provided with a downward-sloping long slot bore 42, one end 31 of described U-shaped connecting rod 3 and inner 22 hinged the fixing of handle, the other end 32 of described U-shaped connecting rod 3 is in the interior slip of described long slot bore 42, between described contact supporting 4 and housing 1, be also provided with contact supporting reset tension spring 16, the upper end hook of one end of described contact supporting reset tension spring 16 and contact supporting 4 is joined fixing, described housing 1 below handle 2, be installed with one with the fixing extension spring fixed leg 17 of contact supporting reset tension spring 16 other ends, on described contact supporting 4, be also provided with the first Rotational Cylindrical 43 and the second Rotational Cylindrical 44, on the upper surface of described snap close 6, correspondence offers a V-shaped groove 61 that can form with U-shaped connecting rod 3 touching butts at the other end 32 of long slot bore 42 interior slips, on snap close 6, the right-hand member 62 of V-shaped groove 61 is hinged in the first Rotational Cylindrical 43 of contact supporting 4 relatively, on snap close 6, the left end of V-shaped groove 61 is formed with a tip 63 relatively, described tripping 5 shape triangular in shape, hinged being set in rotating shaft 12 in middle part of tripping 5, first jiao 51 of described tripping 5 is positioned at the left side of snap close 6, and on first jiao 51 of described tripping 5 corresponding be provided with can with described snap close 6 on tip 63 form the spacing tripping groove 511 of butt, on first jiao 51 of described tripping 5, be also connected with the block 512 that extends to snap close 6 tops and described snap close 6 is formed to axial limiting, and on described block 512, the position of snap close tip 63 is provided with one section of angled transition face 513 relatively.Fix with one end of pull bar 7 for second jiao 52 of described tripping 5, the other end of described pull bar 7 is positioned at sheet metal 9 right-hand members, and pulled by sheet metal 9 in the time of sheet metal 9 heated bending, in the second Rotational Cylindrical 44 of described contact supporting 4, be set with lock tripping reduction torsion spring 18, and the two ends of described lock tripping reduction torsion spring 18 fix with the right-hand member 62 of relative V-shaped groove 61 on the triangle 53 of described tripping 5, snap close 6 respectively.
The circuit protection operating principle of circuit breaker: in the time of current overload, the sheet metal 9 bending pull bar 7 that drives that is heated to the right moves right, pull bar 7 drives tripping 5 along counterclockwise rotation of rotating shaft 12, make first jiao 51 of tripping 5 to depart from the tip 63 of snap close 6, this rear catch 6 is counterclockwise rotation under the active force of U-shaped connecting rod 3, U-shaped connecting rod 3 continues down sliding along the long slot bore 42 of contact supporting 4, handle 2 is counterclockwise rotation under the effect of handle back-moving spring 11, drive long slot bore 42 upward slidings of U-shaped connecting rod 3 along contact supporting 4, until turning to housing 1 is spacing, handle 2 stops, in this process, contact supporting 4 is in the active force 12 counterclockwise rotations around the shaft of contact supporting reset tension spring 16, until contact supporting 4 connects spacing with the spacing block set 13 on housing 1, at this moment snap close 6 clockwise direction rotation under the effect of lock tripping reduction torsion spring 18, until the V-shaped groove 61 of snap close 6 stops with U-shaped connecting rod 3 butts, the also clockwise direction rotation under the effect of lock tripping reduction torsion spring 18 of tripping 5 simultaneously, until first jiao 51 of tripping 5 stops with tip 63 butts of snap close 6, moving contact 8 counterclockwise rotation under the effect of contact reduction torsion spring 15 in this process, until that arc groove on moving contact 8 81 and the support projection 41 on contact supporting 4 form butt is spacing, after this circuit breaker operation mechanism completes all actions, switch disconnects, eliminate fault current.In the time being short-circuited fault, first promote tripping 5 along counterclockwise rotation of rotating shaft 12 by calutron 10, its subsequent action is identical with above-mentioned current overload action.
The operating principle of breaker closing: when handle 2 turns clockwise on housing 1, handle 2 is by long slot bore 42 down slidings that drive U-shaped connecting rod 3 along contact supporting 4, U-shaped connecting rod 3 contacts with the V-shaped groove 61 of snap close 6 in the process of sliding, thereby drive counterclockwise rotation of snap close 6, until the tip 63 of snap close 6 and tripping 5 first jiao 51 contacts completely, now snap close 6 pins with tripping 5, after this U-shaped connecting rod 3 continues down sliding along the long slot bore 42 of contact supporting 4, by the V-shaped groove 61 that makes U-shaped connecting rod 3 with snap close 6, also butt is locked completely, now U-shaped connecting rod 3 also will slide on contact supporting 4 long slot bore 42 bottom, thereby also just promote contact supporting 4 12 clockwise directions rotations around the shaft, and corresponding drive moving contact 8 moves, when handle 2 turns to and the housing 1 spacing place of butt, each parts also rotate in place, moving contact 8 contacts completely with fixed contact, switch energising.
Adopt said structure, because one end 31 of U-shaped connecting rod 3 provided by the utility model is and inner 22 hinged the fixing of handle, the other end 32 is the interior slips of long slot bore 42 at contact supporting 4, on the upper surface of described snap close 6, correspondence offers a V-shaped groove 61 that can form with U-shaped connecting rod 3 touching butts at the other end 32 of long slot bore 42 interior slips, therefore described U-shaped connecting rod 3 can be realized and the interlock of snap close 6 by the slip in long slot bore 42, so not only can effectively guarantee the interlock of handle 2 and snap close 6 grades, and the other end 32 that U-shaped connecting rod 3 and snap close 6 are linked changes movable end into by stiff end, can make U-shaped connecting rod 3 close fast at circuit breaker, in separating brake process, can effectively make up itself and manufacture the error producing, and then greatly reduce the slide fastener probability of circuit breaker in rapid closing process, and make the separating brake action of circuit breaker quicker, operate more reliable and more stable.Separately, because tripping 5 provided by the utility model and snap close 6 are to reset by same lock tripping reduction torsion spring 18, therefore can further reduce like this slide fastener probability of circuit breaker in rapid closing process.
Claims (5)
1. the operating mechanism of a miniature circuit breaker, comprise housing, handle, U-shaped connecting rod, contact supporting, tripping, snap close, pull bar, moving contact, sheet metal, calutron, the outer end of described handle is operating side, the inner of described handle is hinged on housing, between described handle and housing, be also provided with handle back-moving spring, it is characterized in that: on described housing, be fitted with a rotating shaft, the middle part of described contact supporting is articulated with in described rotating shaft, the hinged lower end that is installed in contact supporting of described moving contact, described sheet metal and calutron correspondence are located at the left and right sides of moving contact, the upper end of described contact supporting is provided with a downward-sloping long slot bore, one end of described U-shaped connecting rod and handle are inner hinged fixing, the other end of described U-shaped connecting rod slides in described long slot bore, between described contact supporting and housing, be also provided with contact supporting reset tension spring, the upper end hook of one end of described contact supporting reset tension spring and contact supporting is joined fixing, described housing below handle, be installed with one with the fixing extension spring fixed leg of the contact supporting reset tension spring other end, on described contact supporting, be also provided with the first Rotational Cylindrical and the second Rotational Cylindrical, the corresponding V-shaped groove that offers that end formation touching butt that can slide with U-shaped connecting rod in long slot bore on the upper surface of described snap close, on snap close, the right-hand member of V-shaped groove is hinged in the first Rotational Cylindrical of contact supporting relatively, on snap close, the left end of V-shaped groove is formed with a tip relatively, described tripping shape triangular in shape, hinged being set in rotating shaft in middle part of tripping, first jiao of described tripping is positioned at the left side of snap close, and on first jiao of described tripping corresponding be provided with can with described snap close on tip form the spacing tripping groove of butt, fix with one end of pull bar for second jiao of described tripping, the other end of described pull bar is positioned at sheet metal right-hand member, and pulled by sheet metal in the time of sheet metal heated bending, in the second Rotational Cylindrical of described contact supporting, be set with lock tripping reduction torsion spring, and the two ends of described lock tripping reduction torsion spring respectively with the triangle of described tripping, on snap close, the right-hand member of V-shaped groove fixes relatively.
2. the operating mechanism of miniature circuit breaker according to claim 1, it is characterized in that: in described rotating shaft, be also set with contact reduction torsion spring, the two ends of described contact reduction torsion spring connect with contact supporting, moving contact respectively, on described moving contact, be also provided with an arc groove, on contact supporting, corresponding being provided with described arc groove forms the support projection that locating slip coordinates.
3. the operating mechanism of miniature circuit breaker according to claim 1 and 2, is characterized in that: between described moving contact and contact supporting, be fixedly hinged by detachable buckle.
4. the operating mechanism of miniature circuit breaker according to claim 1, is characterized in that: on described housing, be also provided with the spacing block set that the rotation of described contact supporting is formed to spacing butt.
5. the operating mechanism of miniature circuit breaker according to claim 1, it is characterized in that: on first jiao of described tripping, be also connected with the block that extends to snap close top and described snap close is formed to axial limiting, and on described block, the position of relative snap close tip is provided with one section of angled transition face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420026909.XU CN203674124U (en) | 2014-01-16 | 2014-01-16 | Operation mechanism of miniaturized circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420026909.XU CN203674124U (en) | 2014-01-16 | 2014-01-16 | Operation mechanism of miniaturized circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203674124U true CN203674124U (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420026909.XU Withdrawn - After Issue CN203674124U (en) | 2014-01-16 | 2014-01-16 | Operation mechanism of miniaturized circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203674124U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745892A (en) * | 2014-01-16 | 2014-04-23 | 徐波 | Operation mechanism of small-size breaker |
| CN112053922A (en) * | 2020-08-26 | 2020-12-08 | 加西亚电子电器股份有限公司 | Operating mechanism of remote control circuit breaker |
-
2014
- 2014-01-16 CN CN201420026909.XU patent/CN203674124U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745892A (en) * | 2014-01-16 | 2014-04-23 | 徐波 | Operation mechanism of small-size breaker |
| CN103745892B (en) * | 2014-01-16 | 2016-01-20 | 创奇科技有限公司 | The operating mechanism of miniature circuit breaker |
| CN112053922A (en) * | 2020-08-26 | 2020-12-08 | 加西亚电子电器股份有限公司 | Operating mechanism of remote control circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140625 Effective date of abandoning: 20160120 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |