CN201898099U - Operating mechanism of molded case circuit breaker - Google Patents
Operating mechanism of molded case circuit breaker Download PDFInfo
- Publication number
- CN201898099U CN201898099U CN 201020674599 CN201020674599U CN201898099U CN 201898099 U CN201898099 U CN 201898099U CN 201020674599 CN201020674599 CN 201020674599 CN 201020674599 U CN201020674599 U CN 201020674599U CN 201898099 U CN201898099 U CN 201898099U
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- tripping
- spring
- operating mechanism
- rotating shaft
- circuit breaker
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Abstract
The utility model discloses an operating mechanism of a molded case circuit breaker, which comprises a handle, a main pullback spring, a bracket, a lock catch, a re-fastener, an upper connecting rod, a lower connecting rod and a movable contact terminal system, and also comprises an acceleration breaking device, wherein the acceleration breaking device comprises a space bar, a tripping rotating shaft and an energy storage spring, wherein the space bar is rotatably installed on the tripping rotating shaft, two ends of the tripping rotating shaft are respectively fixed on the bracket, one end of the energy storage spring is fixed, and the other end of the energy storage spring is connected onto the space bar. During the free tripping, the energy storage spring can accelerate the rotation speed of the space bar so as to accelerate the breaking speed of the entire mechanism. During the opening and closing process, since the space bar is locked by the lock catch, the acting force of the energy storage spring is free from increasing an operating force of the handle when the circuit breaker mechanism is opened and closed. Under the situation that the rigidity of the main pullback spring is not increased, the breaking speed can be accelerated, so the manufacturing cost of the operating mechanism can be reduced, and the service life of the operating mechanism can be improved.
Description
Technical field
The utility model relates to low-pressure plastic shell circuit breaker, in particular, relates to the operating mechanism in the low-pressure plastic shell circuit breaker.
Background technology
The operating mechanism of breaker of plastic casing is as the important part of breaker of plastic casing, is the emphasis of each big circuit breaker producer analysis and research always, and the basic principle of operating mechanism and primary structure are public in the industry.The user also constantly proposes higher requirement to the performance of circuit breaker, and such as requiring more reliable breaking capacity, lighter mode of operation, so each circuit breaker manufacturer also all continuing to optimize breaker mechanism, improves the breaking speed of breaker mechanism with this.
In technology in the past, circuit breaker operation mechanism mainly is by increasing the rigidity of mechanism's main extension spring, improving the breaking speed of circuit breaker.But on the whole, the increase space of mechanism's main extension spring rigidity is limited, and along with the increase of main extension spring rigidity, circuit breaker user operating grip necessary operations power also increases accordingly, is not easy to user's operation; Simultaneously, the increase of mechanism's main extension spring rigidity has also improved requirement to the material and the processing mode of mechanism element, cause the increase of cost, otherwise will descend the mechanical endurance of mechanism.
Therefore, just need a kind of new mechanical structure, can either effectively improve the breaking speed of breaker mechanism, the lever operated power when not increasing circuit-breaker switching on-off again, the mechanical endurance that can not reduce breaker mechanism simultaneously.At present, also there is not this constructed products to occur on the market.
The utility model content
The technical problems to be solved in the utility model provides a kind of operating mechanism of breaker of plastic casing, and tool quickens break-up device, can accelerate the movement velocity of circuit breaker tripping effectively, and then can accelerate the breaking speed of whole operation mechanism.Meanwhile, this acceleration break-up device can not increase the operating physical force of handle divide-shut brake, can not influence the mechanical endurance of breaker mechanism yet.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: a kind of operating mechanism of breaker of plastic casing, comprise handle, main extension spring, support, snap close, buckle, go up connecting rod, lower link and moving contact system again, comprise that also one quickens break-up device, described acceleration break-up device comprises tripping, tripping rotating shaft and energy-stored spring, described tripping is installed in rotation on the tripping rotating shaft, the two ends of tripping rotating shaft are fixed on the described support, one end of described energy-stored spring is fixed, and the other end is connected in the tripping.
Preferably, described energy-stored spring is a torsion spring, and described torsion spring set is on the tripping rotating shaft, and an end of torsion spring is against in the tripping, and the other end is connected on the fixed position, such as support or support connecting axle etc.
Further, the afterbody of described tripping is provided with the spring base of a U-shaped, and described torsion spring is positioned at spring base, and an end of described torsion spring is against the bottom of spring base, and the other end is against on the described support.
Further, on the described tripping rotating shaft tripping locating part is installed also.
Further, described tripping locating part also is a U-shaped, and the tripping locating part contacts with described spring base and each contacts with the inboard of support.
Preferably, described snap close and again the button respectively be installed between the described support by a bearing pin.
Preferably, fix a pin in the described tripping, described upper end of going up connecting rod is rotatably connected on the described pin, and the lower end of last connecting rod is hinged by the upper end of a pitman shaft and lower link, and the lower end of lower link is connected with described moving contact system.
Further, the upper end of described main extension spring is articulated on the described handle, and the lower end of main extension spring is articulated on the described pitman shaft.
Compare with prior art, technique effect of the present utility model is actively with significant.The utility model has increased the acceleration break-up device, and circuit breaker is in the trip free motion, and energy-stored spring can quicken the velocity of rotation of tripping, and then has quickened the breaking speed of entire mechanism.And in the motion process of separating brake and combined floodgate, because tripping is fastened the operating physical force of handle when the active force of energy-stored spring can not increase breaker mechanism branch, combined floodgate by snap close.The utility model can be accelerated breaking speed under the situation that does not increase main extension spring rigidity, be used in the manufacturing cost that reduces operating mechanism, the useful life of improving operating mechanism thereby have.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the perspective exploded view of the utility model operating mechanism.
Fig. 2 is that tripping in the utility model, tripping rotating shaft, tripping locating part and the installation of energy-stored spring in support concern schematic diagram.
Fig. 3 has the structural representation of the utility model operating mechanism under gate-dividing state.
Fig. 4 has the structural representation of the utility model operating mechanism under "on" position.
Fig. 5 has the structural representation of the utility model operating mechanism under the trip free state.
Embodiment
As shown in Figure 1 and Figure 2, the operating mechanism of breaker of plastic casing comprises handle 1, main extension spring 2, support 3, tripping 4, snap close 5, buckles 6 again, goes up connecting rod 7, lower link 8 and moving contact system 9, wherein, snap close 5 and detain 6 again and respectively be installed between the support 3 by a bearing pin.Fix a pin 41 in the tripping 4, the upper end of last connecting rod 7 is rotatably connected on the described pin 41, and the lower end of last connecting rod 7 is hinged by the upper end of a pitman shaft 13 with lower link 8, and the lower end of lower link 8 is connected with moving contact system 9.The upper end of main extension spring 2 is articulated on the handle 1, and the lower end of main extension spring 2 is articulated on the pitman shaft 13.This operating mechanism has three kinds of states in the course of work of circuit breaker: "on" position, gate-dividing state and trip free state, and when turning handle 1, can drive moving contact system 9 by main extension spring 2 and lower link 8 and rotate, realize closing a floodgate or separating brake; And when the protective device of circuit breaker moves, can make and trip between snap close 5 and the tripping 4, the energy storage of main extension spring 2 is released, and also can drive moving contact system 9 to rotate, and realizes trip free.The said structure principle is the known technology of this area, does not give unnecessary details at this.
In the utility model, described tripping 4, tripping rotating shaft 10 and energy-stored spring 11 one of a common formation are quickened break-up device, when the circuit breaker trip free, can accelerate the velocity of rotation of tripping 4.
As shown in Figure 1 and Figure 2, tripping 4 is installed in rotation on the tripping rotating shaft 10, and the two ends of tripping rotating shaft 10 are fixed on the support 3, and an end of energy-stored spring 11 is connected in the tripping 4, the other end is connected on the fixed position, such as support or support connecting axle etc.When tripping 4 fastened with snap close 5, energy-stored spring 11 was in the energy storage state, and at this moment, energy-stored spring 11 acts in the tripping 4 clockwise moment (according to Fig. 1, direction shown in Figure 2).Adopt extension spring, stage clip or torsion spring all might reach this effect, but in a kind of preferred embodiment of the present utility model, adopt torsion spring as energy-stored spring 11.The afterbody of tripping 4 is provided with the spring base 42 of a U-shaped, described spring base 42 is installed in rotation on the tripping rotating shaft 10, torsion spring 11 is enclosed within on the tripping rotating shaft 10 and is positioned at spring base 42, and an end of torsion spring 11 is against the bottom of spring base 42, and the other end is against on the support 3.
As shown in Figure 2, support 3 comprises two blocks of parallel side plates, and the two ends of described tripping rotating shaft 10 just are riveted on these two blocks of parallel side plates, support 3 by screw on the base of circuit breaker.One tripping locating part 12 also is installed on the tripping rotating shaft 10, is used to limit tripping 4 endwisely slipping on tripping rotating shaft 10, assurance tripping 4 has only rotary freedom.Tripping locating part 12 can be made of one with tripping 4, also can be an independent part.In this preferred embodiment, tripping locating part 12 is U-shaped structures independently, that is to say, tripping locating part 12 is located on the tripping rotating shaft 10 abreast with spring base 42, the inboard of tripping locating part 12 contacts with the inboard of spring base 42, and the outside of the outside of tripping locating part 12, spring base 42 respectively contacts with the inboard of 3 two blocks of side plates of support, thereby makes tripping 4 roughly be in the centre position of tripping rotating shaft 10.
As shown in Figure 3, when circuit breaker was in "on" position, snap close 5 was interlocked with tripping 4, and energy-stored spring 11 is in the energy storage state.If pull handle under this state, handle 1 rotates under the effect of operating physical force F1.Under the effect of main extension spring 2, last connecting rod 7, lower link 8 and moving contact system 9 rotate, and circuit breaker is realized separating brake, and this moment, the state of operating mechanism changed to Fig. 4 by Fig. 3.In this process, tripping 4, snap close 5, again detain 6 and energy-stored spring 11 still keep original state constant, therefore, energy-stored spring 11 can't influence operating physical force F1.
As shown in Figure 4, when circuit breaker was in gate-dividing state, handle 1 rotated under the effect of operating physical force F2.Under the effect of main extension spring 2, last connecting rod 7, lower link 8 and moving contact system 9 rotate, and circuit breaker is realized closing a floodgate, and this moment, the state of operating mechanism changed to Fig. 3 by Fig. 4.In this process, tripping 4 is pinned by snap close 5 all the time, and energy-stored spring 11 also keeps original energy storage state always, and therefore, energy-stored spring 11 can not influence operating physical force F2 yet.
As shown in Figure 3; when circuit breaker is in "on" position; if place circuit generation current failure; the protective device of circuit breaker triggers and detains 6 again, trips between making snap close 5 and detaining 6 again, and then causes between tripping 4 and the snap close 5 and trip; tripping 4 obtains rotary freedom; the energy of energy-stored spring 11 is released, and under the acting in conjunction of main extension spring 2 and energy-stored spring 11, tripping 4 rotary speeies only depended on the effect of main extension spring 2 to want fast more originally.Because the quickening of tripping 4 rotary speeies, and then driven last connecting rod 7 and accelerated, thereby realized the quick disjunction of moving contact system 9 with fixed contact with the responsiveness of lower link 8.Like this, circuit breaker has just been realized trip free, and the state of operating mechanism changes to Fig. 5 by Fig. 3.
Under trip free state shown in Figure 5, pull the process of buckleing again that handle can be finished mechanism, tripping 4 is fastened with snap close 5 again, in this process, also finished the energy storage again of energy-stored spring 11 simultaneously.The state of operating mechanism changes to Fig. 4 by Fig. 5, and then can carry out closing operation.
Operation principle of the present utility model is as follows: be in separating brake and the combined floodgate motion process at circuit breaker, tripping is not rotated with the branch of circuit breaker, the motion of closing a floodgate, and tripping and snap close are in closed position all the time.Described energy-stored spring is by energy storage at this moment, and spring force acts in the tripping.Because tripping this moment maintains static, so the active force of energy-stored spring can not influence the operating physical force of breaker mechanism handle, lever operated power is still only relevant with the mechanism main extension spring.When circuit breaker moves owing to line fault generation trip free, to trip between snap close and the tripping, tripping is rotated rapidly, and is driven upper and lower link motion under the effect of main extension spring and energy-stored spring, and dynamic and static contact separates, circuit breaker realization disjunction.In traditional circuit breaker operation mechanism, there is not described energy-stored spring, when circuit breaker moves owing to line fault generation trip free, trip between snap close and the tripping, the active force that acts in the tripping only has the main extension spring pulling force, the velocity of rotation of tripping is slow than the utility model, because the velocity of rotation of tripping is very important in the disjunction campaign of entire mechanism, so the breaking speed of traditional operation mechanism also wants slow than the utility model.
The foregoing description provides to those skilled in the art to be understood or realizes of the present utility model; the people who is familiar with this area can make all modifications and variation to the foregoing description under the situation that does not break away from the utility model thought; thereby protection range of the present utility model do not limit by the foregoing description, and is as the criterion with claims institute restricted portion.
Claims (8)
1. the operating mechanism of a breaker of plastic casing, comprise handle (1), main extension spring (2), support (3), snap close (5), detain again (6), last connecting rod (7), lower link (8) and moving contact system (9), it is characterized in that, comprise that also one quickens break-up device, described acceleration break-up device comprises tripping (4), tripping rotating shaft (10) and energy-stored spring (11), described tripping (4) is installed in rotation on the tripping rotating shaft (10), the two ends of tripping rotating shaft (10) are fixed on the described support (3), one end of described energy-stored spring (11) is fixed, and the other end is connected in the tripping (4).
2. operating mechanism according to claim 1 is characterized in that, described energy-stored spring (11) is a torsion spring, and described torsion spring set is on tripping rotating shaft (10), and an end of torsion spring is against in the tripping (4), and the other end is against on the described support (3).
3. operating mechanism according to claim 2, it is characterized in that the afterbody of described tripping (4) is provided with the spring base (42) of a U-shaped, described torsion spring is positioned at spring base (42), one end of described torsion spring is against the bottom of spring base (42), and the other end is against on the described support (3).
4. operating mechanism according to claim 3 is characterized in that, a tripping locating part (12) also is installed on the described tripping rotating shaft (10).
5. operating mechanism according to claim 4 is characterized in that, described tripping locating part (12) also is a U-shaped, and tripping locating part (12) contacts with described spring base (42) and each contacts with the inboard of support (3).
6. operating mechanism according to claim 1 is characterized in that, described snap close (5) and again the button (6) respectively be installed between the described support (3) by a bearing pin.
7. operating mechanism according to claim 1, it is characterized in that, fix a pin (41) in the described tripping (4), described upper end of going up connecting rod (7) is rotatably connected on the described pin (41), the lower end of last connecting rod (7) is hinged by the upper end of a pitman shaft (13) with lower link (8), and the lower end of lower link (8) is connected with described moving contact system (9).
8. operating mechanism according to claim 6 is characterized in that, the upper end of described main extension spring (2) is articulated on the described handle (1), and the lower end of main extension spring (2) is articulated on the described pitman shaft (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020674599 CN201898099U (en) | 2010-12-22 | 2010-12-22 | Operating mechanism of molded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020674599 CN201898099U (en) | 2010-12-22 | 2010-12-22 | Operating mechanism of molded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201898099U true CN201898099U (en) | 2011-07-13 |
Family
ID=44255997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020674599 Expired - Lifetime CN201898099U (en) | 2010-12-22 | 2010-12-22 | Operating mechanism of molded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201898099U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034652A (en) * | 2010-12-22 | 2011-04-27 | 上海良信电器股份有限公司 | Operating mechanism for molded case circuit breaker |
| CN103441041A (en) * | 2013-06-28 | 2013-12-11 | 江苏西门控电器有限公司 | Molded case circuit breaker operating mechanism buckle carrying device |
| CN104091733A (en) * | 2014-07-02 | 2014-10-08 | 温州能美电器有限公司 | Leakage protector |
| CN104465239A (en) * | 2013-09-24 | 2015-03-25 | 上海电科电器科技有限公司 | Interchange type operating mechanism |
| CN106571274A (en) * | 2016-11-09 | 2017-04-19 | 北京人民电器厂有限公司 | Circuit breaker |
| CN108010820A (en) * | 2017-12-22 | 2018-05-08 | 上海诺雅克电气有限公司 | Breaker |
| CN112768315A (en) * | 2020-12-31 | 2021-05-07 | 上海佳岚智能科技有限公司 | Intelligent miniature circuit breaker and method |
-
2010
- 2010-12-22 CN CN 201020674599 patent/CN201898099U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034652B (en) * | 2010-12-22 | 2013-11-06 | 上海良信电器股份有限公司 | Operating mechanism for molded case circuit breaker |
| CN102034652A (en) * | 2010-12-22 | 2011-04-27 | 上海良信电器股份有限公司 | Operating mechanism for molded case circuit breaker |
| CN103441041A (en) * | 2013-06-28 | 2013-12-11 | 江苏西门控电器有限公司 | Molded case circuit breaker operating mechanism buckle carrying device |
| EP3051566A4 (en) * | 2013-09-24 | 2017-05-10 | Seari Electric Technology Co., Ltd. | Exchange operating mechanism |
| CN104465239A (en) * | 2013-09-24 | 2015-03-25 | 上海电科电器科技有限公司 | Interchange type operating mechanism |
| EP3051566A1 (en) * | 2013-09-24 | 2016-08-03 | Seari Electric Technology Co., Ltd. | Exchange operating mechanism |
| US9793081B2 (en) | 2013-09-24 | 2017-10-17 | Seari Electric Technology Co., Ltd. | Exchange operating mechanism |
| CN104465239B (en) * | 2013-09-24 | 2017-04-12 | 上海电科电器科技有限公司 | Interchange type operating mechanism |
| CN104091733A (en) * | 2014-07-02 | 2014-10-08 | 温州能美电器有限公司 | Leakage protector |
| CN104091733B (en) * | 2014-07-02 | 2016-09-14 | 温州能美电器有限公司 | Earth leakage protective device |
| CN106571274A (en) * | 2016-11-09 | 2017-04-19 | 北京人民电器厂有限公司 | Circuit breaker |
| CN106571274B (en) * | 2016-11-09 | 2019-04-23 | 北京人民电器厂有限公司 | Breaker |
| CN108010820A (en) * | 2017-12-22 | 2018-05-08 | 上海诺雅克电气有限公司 | Breaker |
| CN112768315A (en) * | 2020-12-31 | 2021-05-07 | 上海佳岚智能科技有限公司 | Intelligent miniature circuit breaker and method |
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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: 20110713 Effective date of abandoning: 20131106 |
|
| RGAV | Abandon patent right to avoid regrant |