CN102568948B - Improved circuit breaker - Google Patents
Improved circuit breaker Download PDFInfo
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- CN102568948B CN102568948B CN201110413613.4A CN201110413613A CN102568948B CN 102568948 B CN102568948 B CN 102568948B CN 201110413613 A CN201110413613 A CN 201110413613A CN 102568948 B CN102568948 B CN 102568948B
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- fastener
- circuit breaker
- fixed mount
- circuit
- described fastener
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Abstract
The invention relates to an improved circuit breaker. The improved circuit breaker comprises a shell, a circuit protection actuating mechanism, a moving contact, a fixed contact and a fastener mechanism, wherein the circuit protection actuating mechanism is positioned in the shell; the moving contact is matched with the fixed contact; the fastener mechanism comprises a fastener and a driving part which drives the fastener to rotate; a fixed mount is hinged on the fastener, and can drive the fastener to get away from the driving part; a fastener cover is also hinged on the fastener; and the circuit protection actuating mechanism is matched with the fastener cover to drive the fastener to get away from the driving part. The improved circuit breaker has the advantages that: two independent driving elements of the fixed mount and the fastener cover are used for tripping the fastener mechanism, and both the fixed mount and the fastener cover can drive the fastener mechanism to get away, so that the risk of secondary electric arc, which is caused by a reason that the moving contact is separated from the fixed contact at first due to an electrical repulsion force to cause a tripping mechanism not to act, then the moving contact is attached to the fixed contact again to cause the tripping mechanism to act, and the moving contact is separated from the fixed contact again, is avoided.
Description
Technical field
The present invention relates to a kind ofly provides the circuit breaker of overload, short-circuit protection, particularly a kind of improved circuit breaker for electric wiring, electric equipment.
Background technology
At present, the kind of circuit breaker is varied, and operation principle is also different.A wherein class circuit breaker; the tripping mechanism of the circuit protection mechanisms such as inner employing short circuit current relay, bimetal leaf and the action that matches with these protection mechanisms; and moving contact is located on tripping mechanism; corresponding actions by circuit protection mechanism to situations such as appearance overload, short circuits in circuit; drive de-mouth mechanism action and then moving contact is separated with fixed contact, realizing the disconnection protection of circuit.
In such circuit breaker, programme element mainly concentrates on circuit protection mechanism with in the relation that is linked of tripping mechanism and the structure that engages/throw off of tripping mechanism self.Its syndeton and matching relationship more complicated each other, shortcoming be mostly response action sensitive not, easily break down etc.For these shortcomings, existing circuit breaker has proposed some improvement.
The number of patent application of announcing on July 1st, 1998 as State Intellectual Property Office is: CN96116635.5, name are called in the application for a patent for invention open file of " multifunctional miniature circuit breaker "; a kind of multifunctional miniature circuit breaker is disclosed; in the housing of front and rear covers composition, be provided with the overload delayed release forming by bimetal leaf, with the push pedal of bimetal leaf interlock and with the snap close of push pedal interlock; By yoke, around the coil in this yoke and be located at the short circuit instantaneous release that iron core, spring, push rod in yoke form; By handle, the operating mechanism that is located at connecting rod on handle, form with the snap close of connection-rod linkage and tripping, with the push pedal of snap close interlock and lever and spring, by ionic formula grid sheet be located at the arc control device that the ceramic flash barrier of fixed contact and moving contact both sides forms.
Although the circuit breaker of this scheme has structurally been made improvement, make relatively simple for structure, install and use more convenient.But it is slower that this scheme existent defect is exactly contact opening speed, fixed contact separates with moving contact and mechanism does not move easy formation secondary and draws electric arc.Overload delayed release is first to drive tripping mechanism action and then band moving contact to separate with overload delayed release, because stored energy mechanism is except the action of band trigger device, also drive tripping mechanism, energy storage can not transform the kinetic energy of contact completely, and then contact opening speed is slower, and moving contact can not drive tripping mechanism action after separating with fixed contact, moving contact easily bounce-back is again connected and is formed secondary arcing with fixed contact.
Summary of the invention
In order to solve above-mentioned the problems of the prior art, the invention provides a kind of improved circuit breaker, on basis simple in structure, easy to use, a kind of fastener mechanism of new structure is provided, remove the tripping mechanism of intermediate link, directly rely on fixed mount and fastener cover driver part and fastener to throw off, fastener coordinates with the binding face on fixed mount and then drives the moving contact on fixed mount to separate fast with fixed contact, the energy of stored energy mechanism changes into the kinetic energy of moving contact to a greater degree, and separating of moving contact and fixed contact is quicker; Avoid moving contact bounce-back again to connect with fixed contact the danger that forms secondary arcing.
The main technical schemes that the present invention adopts is: a kind of improved circuit breaker, comprise housing, be positioned at the circuit protection actuating mechanism of described housing, the moving contact cooperatively interacting and fixed contact and arc-control device, also comprise fastener mechanism, described fastener mechanism comprises fastener and the driver part that drives described fastener to rotate; On described fastener, be hinged with fixed mount, described moving contact is located on described fixed mount, and described fixed mount can drive described fastener and described driver part to throw off; On described fastener, be also hinged with fastener cover, described circuit protection actuating mechanism matches with described fastener cover and drives described fastener and described driver part to throw off.
The present invention also adopts following attached technical scheme:
Described fastener and described fixed mount are articulated with the first bearing pin, and described fixed mount is provided with hinge hole one, and described fastener is provided with hinge hole two, and described the first bearing pin is through hinge hole one and hinge hole two.
In described hinge hole one and hinge hole two, there is one for elliptical aperture.
Between described fastener and described fixed mount, be provided with and flexible member one, described fixed mount inner side is also provided with binding face, and described flexible member one drives described fixed mount to clockwise rotate around the first bearing pin, drives described binding face and the laminating of described fastener.
On described fixed mount, be also provided with the first pressure section that drives described driver part and described fastener to throw off.
Described fastener and described fastener cover are articulated with the second bearing pin.
Between described fastener and described fastener cover, be provided with flexible member two, on described fastener cover, be also provided with top splenium, described flexible member two drives described fastener cover to clockwise rotate around the second bearing pin, drives described top splenium and the laminating of described circuit protection actuating mechanism.
Described fastener cover is provided with the second pressure section that drives described driver part and described fastener to throw off.
Described the first pressure section is an inclined-plane, and described the second pressure section is an inclined-plane.
Described fastener is by the hinged and described housing of described the first bearing pin, and described fastener is provided with breach.
Described driver part comprises the knob and the connecting rod that are articulated with on housing, and one end of described connecting rod is hinged with knob, the other end coordinates with the breach that described fastener is provided with; Described knob drives described fastener to clockwise rotate by connecting rod.
In described housing, be provided with a reset tension spring, the reset terminal of described reset tension spring is connected with described fastener, and the other end is fixed on described housing.
Described circuit protection actuating mechanism comprises short circuit current relay and bimetal leaf; described top splenium is corresponding with described short circuit current relay; in described housing, be provided with a groove; in described groove, being provided with can be along the drive link of described groove relative sliding; matching with described top splenium in described drive link one end, matches with bimetal leaf in described drive link one end.
Described short circuit current relay pack vinculum circle, spring and lance, described top splenium is corresponding with described lance.
The beneficial effect that adopts the present invention to bring: first, the present invention is adopting fastener mechanism to replace tripping mechanism in the past, save the intermediate link of tripping mechanism, knob further drives fastener to rotate by connecting rod, and then drives moving contact laminating fixed contact by flexible member; Avoid the loss of middle tripping mechanism energy, the separation of the moving contact of circuit breaker fast and reliable more, and then safety is secure more to the protection of circuit.Secondly, the dropout of contacting piece of the present invention mechanism is provided with fixed mount and the large drive element of fastener cover two, when situation appears in circuit, according to the difference of circuital current size, no matter be that circuit protection actuating mechanism is first moved, or moving contact separates with fixed contact because electric repulsion is first, all can drive fastener mechanism to throw off, avoid moving contact not move because electric repulsion first separates tripping mechanism with fixed contact, and then cause moving contact again fit fixed contact then tripping mechanism action moving contact again separate with fixed contact the danger that forms secondary arc, circuit breaker to circuit particularly the protection of large short circuit current faulty circuit increased dual fail-safe, circuit breaker is more safe and reliable.Again; the present invention is set to rectangular groove at the recessed hinge of fixed mount and fastener; and then realize moving contact except around the hinge rotation of fixed mount and fastener; can also be along rectangular groove direction around the hinge axes perpendicular to around fixed mount and fastener; eliminated in production, installation and use procedure, moving contact and the fixed contact incomplete hidden danger of fitting, increases the reliability that moving contact contacts with fixed contact; extended useful life, circuit breaker is more lasting reliable to the protection of safety.
Brief description of the drawings
Fig. 1 is the internal structure schematic diagram of the present invention under off-state.
Fig. 2 is the internal structure schematic diagram of the present invention under closure state.
Fig. 3 is that the present invention removes the internal structure schematic diagram under off-state after housing.
Fig. 4 is that the present invention removes the internal structure schematic diagram under closure state after housing.
Fig. 5 is that the parts of circuit breaker of the present invention split schematic diagram, and the structure of all parts is shown.
Fig. 6 is the overall structure figure of fastener mechanism of the present invention.
Fig. 7 is that fastener mechanism of the present invention does not dissect structure chart under disengaged condition.
Fig. 8 is that fastener mechanism another kind of the present invention does not dissect structure chart under disengaged condition.
Fig. 9 is the structure chart that dissects under fastener mechanism disengaged condition of the present invention.
Figure 10 is the enlarged drawing of A in Fig. 9.
Figure 11 is the structure chart that dissects under the another kind of disengaged condition of fastener mechanism of the present invention.
Figure 12 is the enlarged drawing of B in Figure 11.
Figure 13 is that the parts of fastener mechanism of the present invention split schematic diagram.
Figure 14 is that the parts under another visual angle of fastener mechanism of the present invention split schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Referring to Fig. 1 to Figure 12, according to the improved circuit breaker of one provided by the invention, comprise housing 1, be positioned at the circuit protection actuating mechanism of described housing 1, the moving contact 3 cooperatively interacting and fixed contact 2 and arc-control device 4, also comprise fastener mechanism, described fastener mechanism comprises fastener 5 and the driver part that drives described fastener 5 to rotate; On described fastener 5, be hinged with fixed mount 7, described moving contact 2 is located on described fixed mount 7, and described fixed mount 7 can drive described fastener 5 and described driver part to throw off; On described fastener 5, be also hinged with fastener cover 6, described circuit protection actuating mechanism matches with described fastener cover 6 and drives described fastener 5 and described driver part to throw off.
Referring to Fig. 5 to Fig. 9, in above-described embodiment provided by the invention, described fastener 5 is articulated with the first bearing pin 16 with described fixed mount 7, and described fixed mount 7 is provided with hinge hole 1, described fastener 5 is provided with hinge hole 2 51, and described the first bearing pin 16 is through hinge hole 1 and hinge hole 2 51.In described hinge hole 1 and hinge hole 2 51, there is one for elliptical aperture.Between described fastener 5 and described fixed mount 7, be provided with and flexible member 1, described fixed mount 7 inner sides are also provided with binding face 72, described flexible member 1 drives described fixed mount 7 to clockwise rotate around the first bearing pin 16, drives described binding face 72 to fit with described fastener 5.On described fixed mount 7, be also provided with the first pressure section 73 that drives described driver part and described fastener 5 to throw off.The design of above-mentioned elliptical aperture can be rotated along described hinge hole 1 or vertical the first bearing pin of hinge hole 2 51 elliptical aperture directions fixed mount 7 under flexible member one 8 effects.
Referring to Fig. 5 to Figure 11, in above-described embodiment provided by the invention, described fastener 5 is articulated with the second bearing pin 17 with described fastener cover 6.Between described fastener 5 and described fastener cover 6, be provided with flexible member 2 18; on described fastener cover 6, be also provided with top splenium 62; described flexible member 2 18 drives described fastener cover 6 to clockwise rotate around the second bearing pin 17, drives described top splenium 62 and described circuit protection actuating mechanism laminating.Described fastener cover 6 is provided with the second pressure section 61 that drives described driver part and described fastener 5 to throw off.
Referring to Fig. 7 to Figure 14, in above-described embodiment provided by the invention, described the first pressure section 73 is an inclined-plane, and described the second pressure section 61 is an inclined-plane.Described fastener 5 is by the hinged and described housing 1 of described the first bearing pin 16, and described fastener 5 is provided with breach 52.
Described driver part comprises the knob 9 and the connecting rod 10 that are articulated with on housing 1, and one end of described connecting rod 10 is hinged with knob 9, the other end coordinates with the breach 52 that described fastener 5 is provided with; Described knob 9 drives described fastener 5 to clockwise rotate by connecting rod 10.
In described housing 1, be provided with a reset tension spring 12, the reset terminal of described reset tension spring 12 is connected with described fastener 5, and the other end is fixed on described housing 1.
Referring to Fig. 1 to Fig. 5; in above-described embodiment provided by the invention; described circuit protection actuating mechanism comprises short circuit current relay 12 and bimetal leaf 13; described top splenium 62 is corresponding with described short circuit current relay 12; in described housing 1, be provided with a groove 19; in described groove 19, being provided with can be along the drive link 14 of described groove 19 relative slidings, matches with described top splenium 62 in described drive link 14 one end, matches with bimetal leaf 13 in described drive link 14 one end.
Referring to Fig. 3 to Fig. 5, in above-described embodiment provided by the invention, described short circuit current relay 12 comprises coil 121, spring 122 and lance 123, and described top splenium 62 is corresponding with described lance 123.
Below the operation principle of circuit breaker provided by the invention and process closed, that throw off are made a detailed description:
As shown in Figure 3, be circuit breaker off-state figure, in this state representation circuit, there is the situations such as short circuit, overload, overcurrent, automatically disconnect for protective circuit.When circuit recovers normal, while needing close circuit breaker, manual operation knob 9 clockwise rotates, in the process of rotating at knob 9, knob 9 promotes the breach 52 on fastener 5 by connecting rod 10 fore-ends that are hinged with it, fastener 5 is clockwise rotated around the first bearing pin 16, and then promotion fastener cover 6 clockwise rotate and drives top splenium 62 and the lance 123 of short circuit electromagnetic relay to fit around the second bearing pin 17.As shown in Figure 8, also promote fixed mount 7 clockwise rotates and drives the binding face 72 of fixed mount 7 inner sides to fit with fastener 5 around the first bearing pin 16 simultaneously.Meanwhile, after the moving contact 3 on fixed mount 7 is fitted in fixed contact 2, two contact laminatings, knob 9 is rotated further certain distance, and the button spring 15 that makes to link is in compression stress, and object is that the power that moving contact 3 and fixed contact 2 are fitted is increased.So far, knob 9 completes whole rotation process, makes circuit breaker in closure state.The energy major part that reset tension spring 11 stores is converted into the kinetic energy of moving contact 3, has avoided the loss of middle tripping mechanism energy, the separation fast and reliable more of the moving contact 3 of circuit breaker, and then safety is secure more to the protection of circuit.
As shown in Figure 4, be breaker closing state diagram, this state representation circuit is in closed conducting state.In the time there is the situations such as short circuit, overload, overcurrent in circuit, short circuit electromagnetic relay 12 or bimetal leaf 13 respond, and move.Concrete: the lance 123 in short circuit electromagnetic relay 12 ejects, with the top splenium 62 on its fastener cover 6 leaning mutually, rotate counterclockwise around the second bearing pin 17, drive the second pressure section 61 on top splenium 62 to rotate counterclockwise, the second pressure section 61 is released being stuck in the connecting rod 10 in breach 52 on fastener 5, and then fastener 5 is rotated counterclockwise under the effect of reset tension spring 11 around the first bearing pin 16, as shown in Figure 7, in this process, because the binding face 72 of the hinged fixed mount 7 of fastener 5 is fitted with fastener 5, making fixed mount 7 follow fastener 5 rotates counterclockwise around the first bearing pin 16.The moving contact 3 that makes to be fixed on fixed mount 7 separates with fixed contact 2; Or bimetal leaf 13 heated bendings, drive the drive link 14 matching with it to move right, simultaneously, stirring the top splenium 62 matching with it rotates counterclockwise, the second pressure section 61 is rotated counterclockwise, release being stuck in the connecting rod 10 in breach 52 on fastener 5, and then fastener 5 is rotated counterclockwise around the first bearing pin 16 under the effect of reset tension spring 11, separate with fixed contact 2 to moving contact 3.Meanwhile, knob 9 rotates counterclockwise and resets to the position that disconnects gear under the effect of interlock button spring 15.So far, whole disconnection process completes.Two large drive elements of the dropout that above-mentioned fixed mount 7 and fastener cover 6 are fastener mechanism, when situation appears in circuit, according to the difference of circuital current size, no matter be that circuit protection actuating mechanism is first moved, or moving contact 3 separates with fixed contact 2 because electric repulsion is first, all can drive fastener 5 mechanisms to throw off, avoid moving contact 3 not move because electric repulsion first separates tripping mechanism with fixed contact 2, and then then tripping mechanism action moving contact 3 and fixed contact 2 separate the danger of formation secondary arc to fixed contact 2 again to cause moving contact 3 again to be fitted, fixed mount and fastener cover be arranged so that circuit breaker to circuit particularly the protection of large short circuit current faulty circuit increased dual fail-safe, circuit breaker is more safe and reliable.
Claims (13)
1. an improved circuit breaker, comprise housing (1), be positioned at the circuit protection actuating mechanism of described housing (1), the moving contact (3) cooperatively interacting and fixed contact (2) and arc-control device (4), it is characterized in that: also comprise fastener mechanism, described fastener mechanism comprises fastener (5) and the driver part that drives described fastener (5) to rotate, on described fastener (5), be hinged with fixed mount (7), it is upper that described moving contact (2) is located at described fixed mount (7), and described fixed mount (7) can drive described fastener (5) and described driver part to throw off, on described fastener (5), be also hinged with fastener cover (6), described circuit protection actuating mechanism matches with described fastener cover (6) and drives described fastener (5) and described driver part to throw off, between described fastener (5) and described fixed mount (7), be provided with flexible member one (8), described fixed mount (7) inner side is also provided with binding face (72), described flexible member one (8) drives described fixed mount (7) to clockwise rotate around the first bearing pin (16), drive described binding face (72) and described fastener (5) laminating, between described fastener (5) and described fastener cover (6), be provided with flexible member two (18), on described fastener cover (6), be also provided with top splenium (62), described flexible member two (18) drives described fastener cover (6) to clockwise rotate around the second bearing pin (16), drive described top splenium (62) and described circuit protection actuating mechanism laminating.
2. circuit breaker according to claim 1, it is characterized in that: described fastener (5) is articulated with the first bearing pin (16) with described fixed mount (7), described fixed mount (7) is provided with hinge hole one (71), described fastener (5) is provided with hinge hole two (51), and described the first bearing pin (15) is through hinge hole one (71) and hinge hole two (51).
3. circuit breaker according to claim 2, is characterized in that: in described hinge hole one (71) and hinge hole two (51), have one for elliptical aperture.
4. circuit breaker according to claim 1, is characterized in that: on described fixed mount (7), be also provided with the first pressure section (73) that drives described driver part and described fastener (5) to throw off.
5. circuit breaker according to claim 1, is characterized in that: described fastener (5) is articulated with the second bearing pin (17) with described fastener cover (6).
6. circuit breaker according to claim 1, is characterized in that: described fastener cover (6) is provided with the second pressure section (61) that drives described driver part and described fastener (5) to throw off.
7. circuit breaker according to claim 4, is characterized in that: described the first pressure section (73) is an inclined-plane.
8. circuit breaker according to claim 6, is characterized in that: described the second pressure section (61) is an inclined-plane.
9. circuit breaker according to claim 1, is characterized in that: described fastener (5) is upper by the hinged and described housing of described the first bearing pin (16) (1), and described fastener (5) is provided with breach (52).
10. circuit breaker according to claim 1, it is characterized in that: described driver part comprises the knob (9) and the connecting rod (10) that are articulated with on housing (1), and the breach (52) that one end of described connecting rod (10) is hinged with knob (9), the other end is provided with described fastener (5) coordinates; Described knob (9) drives described fastener (5) to clockwise rotate by connecting rod (10).
11. circuit breakers according to claim 1, is characterized in that: in described housing (1), be provided with a reset tension spring (12), the reset terminal of described reset tension spring (12) is connected with described fastener (5), and the other end is fixed on described housing (1).
12. circuit breakers according to claim 1; it is characterized in that: described circuit protection actuating mechanism comprises short circuit current relay (12) and bimetal leaf (13); described top splenium (62) is corresponding with described short circuit current relay (12); in described housing (1), be provided with a groove (19); in described groove (19), being provided with can be along the drive link (14) of described groove (19) relative sliding; matching with described top splenium (62) in described drive link (14) one end, matches with bimetal leaf (13) in described drive link (14) one end.
13. circuit breakers according to claim 12, is characterized in that: described short circuit current relay (12) comprises coil (121), spring (122) and lance (123), and described top splenium (62) is corresponding with described lance (123).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110413613.4A CN102568948B (en) | 2011-12-13 | 2011-12-13 | Improved circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110413613.4A CN102568948B (en) | 2011-12-13 | 2011-12-13 | Improved circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102568948A CN102568948A (en) | 2012-07-11 |
| CN102568948B true CN102568948B (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110413613.4A Active CN102568948B (en) | 2011-12-13 | 2011-12-13 | Improved circuit breaker |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105575740B (en) * | 2016-03-14 | 2018-06-05 | 乐清市沃斯托电气有限公司 | Breaker |
| CN108878209A (en) * | 2018-09-03 | 2018-11-23 | 厦门大恒科技有限公司 | A kind of miniature circuit breaker of internally provided with vacuum contact head mechanism |
| CN112002622B (en) * | 2020-08-27 | 2023-01-03 | 厦门恒锋力电子有限公司 | Miniature circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1585064A (en) * | 2004-05-25 | 2005-02-23 | Tcl国际电工(无锡)有限公司 | Small circuit breaker |
| CN201112303Y (en) * | 2007-09-27 | 2008-09-10 | 温州奥来电器有限公司 | Accumulated energy type high subsection small circuit breaker |
| CN101677049A (en) * | 2008-09-19 | 2010-03-24 | 郑春开 | Improved circuit breaker |
| CN101923987A (en) * | 2009-06-09 | 2010-12-22 | 浙江科都电气制造有限公司 | Improved breaker |
| CN101930883A (en) * | 2010-09-16 | 2010-12-29 | 方华朋 | Small-sized breaker |
| CN202423168U (en) * | 2011-12-13 | 2012-09-05 | 科都电气有限公司 | Improved circuit breaker |
-
2011
- 2011-12-13 CN CN201110413613.4A patent/CN102568948B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1585064A (en) * | 2004-05-25 | 2005-02-23 | Tcl国际电工(无锡)有限公司 | Small circuit breaker |
| CN201112303Y (en) * | 2007-09-27 | 2008-09-10 | 温州奥来电器有限公司 | Accumulated energy type high subsection small circuit breaker |
| CN101677049A (en) * | 2008-09-19 | 2010-03-24 | 郑春开 | Improved circuit breaker |
| CN101923987A (en) * | 2009-06-09 | 2010-12-22 | 浙江科都电气制造有限公司 | Improved breaker |
| CN101930883A (en) * | 2010-09-16 | 2010-12-29 | 方华朋 | Small-sized breaker |
| CN202423168U (en) * | 2011-12-13 | 2012-09-05 | 科都电气有限公司 | Improved circuit breaker |
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| CN102568948A (en) | 2012-07-11 |
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Address after: 325608 Puqi Industrial Zone, Hongqiao Town, Leqing City, Wenzhou City, Zhejiang Province Patentee after: Kedu Electric Co.,Ltd. Address before: 325608 Block C, Puqi Industrial Zone, Hongqiao Town, Yueqing City, Wenzhou City, Zhejiang Province Patentee before: KEDU ELECTRIC Co.,Ltd. |
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