CN204857629U - Reserve electro -magnet protection mechanism - Google Patents
Reserve electro -magnet protection mechanism Download PDFInfo
- Publication number
- CN204857629U CN204857629U CN201520580509.8U CN201520580509U CN204857629U CN 204857629 U CN204857629 U CN 204857629U CN 201520580509 U CN201520580509 U CN 201520580509U CN 204857629 U CN204857629 U CN 204857629U
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- armature
- circuit breaker
- bar
- support
- yoke
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Abstract
The utility model discloses a reserve electro -magnet protection mechanism, include: support, strike pole, yoke, armature and extension spring. Strikeeing the pole rotation and installing on the support, the yoke is installed on the busbar and connecting plate of circuit breaker, and armature is installed on strikeeing the pole, and the extension spring is installed at the support and is struck between the pole. The spring force of extension spring acts on the strike pole, strikes the pole near the support, and armature and yoke separation strike the tripping device separation of pole and circuit breaker, and short -circuit current in the circuit breaker produces the electromagnetic force, and the electromagnetic force makes yoke and the armature to attract each other, and rank band iron moves and strikes the pole and rotate around the support, and the tripping device contact of strikeeing pole and circuit breaker makes the circuit breaker to thread off. The utility model discloses a reserve electro -magnet protection mechanism simple structure, the short circuit breaking required time can effectively be shortened in the installation of being convenient for, has improved the short circuit breaking ability of circuit breaker, makes the circuit breaker circuit protection more comprehensive.
Description
Technical field
The utility model relates to Low Voltage Electrical Apparatus, more particularly, relates to the backup protection apparatus field of circuit breaker.
Background technology
Breaker of plastic casing is one of electric elements important in low-voltage electrical field.Its Main Function automatically can cut off electric current after electric current exceedes escape setting, and can again connect after eliminating line fault.The mode cutting off electric current is short circuit dropout and overlond trip.
Existing electronic type molded case circuit breaker is more and more less due to volume, does not often have backup protection equipment.So when there being electric current by electronic type molded case circuit breaker body, judge whether it is that the current conversion that short circuit current will be detected by instrument transformer becomes signal, again this signal is carried out Treatment Analysis, after judgement is short circuit current, just signal is issued electronic type tripping relay to trigger circuit breaker tripping, the therefore required time is just long.So short circuit breaking current is through out-of-date, the break-time of electronic type molded case circuit breaker is comparatively slow, and the raising of restraint short circuit breaking, has very large hidden danger to short circuit breaking reliability.
Existing breaker of plastic casing, particularly electronic type molded case circuit breaker, due to spatial limitation, often seldom adopt standby electromagnet protecting device.For current most of Thermomagnetic type breaker of plastic casing, owing to making circuit breaker tripping, often need secondary transmission, the transmission of power needs the long time.For electronic type molded case circuit breaker, its instantaneous trip needs through a series of signal of telecommunication analyzing and processing, and then sends signal to electronic type release to trigger circuit breaker tripping, and it needs the time of dropout also long.So the short-circuit protection ability reduced all to a certain extent.
Utility model content
The utility model is intended to propose a kind of mechanism that can provide backup protection.
According to an embodiment of the present utility model, propose a kind of standby electromagnet protection mechanism, comprising: support, strike bar, yoke, armature and extension spring.Hitting bar is rotatably installed on support, and on the busbar that yoke is arranged on circuit breaker and gusset piece, armature is arranged on and hits on bar, and extension spring is arranged on support and hits between bar.The spring-force driven dual of extension spring is in strike bar, hit bar near support, armature is separated with yoke, hit bar to be separated with the tripping mechanism of circuit breaker, short circuit current in circuit breaker produces electromagnetic force, electromagnetic force makes yoke and armature attract each other, and armature drives and hits bar around holder pivots, and strike bar contacts with the tripping mechanism of circuit breaker and makes circuit breaker tripping.
In one embodiment, the part that support installing hits bar is U-shaped, has the rotating shaft of stretching out in one end of U-shaped opening, and the shaft hole sleeve on strike bar, in rotating shaft, hits bar and rotates around the axis.
In one embodiment, armature is assembled by the first plate and the second plate and is formed, there are two place's extended structures on the second plate, first extended structure is T-shaped, first extended structure is positioned on long limit, the T-shaped two ends of the first extended structure form the first elongated end and the second elongated end, and the second extended structure is extension rod, and extension rod is positioned on minor face.
In one embodiment, hit on bar and there is location hole of the spring and armature installing hole.Extension rod is arranged in the armature installing hole hitting bar.
In one embodiment, standby electromagnet protection mechanism is arranged in circuit breaker, is arranged on base module.Support is fixed on outside base module, and armature is arranged in base module.
In one embodiment, base module is combined to form by the first module and the splicing of the second module, first module and the second module have the first round slot bore and the second round slot bore respectively, and the below of the first round slot bore and the second round slot bore is the first inclined-plane and the second inclined-plane respectively.First elongated end of armature and the second elongated end are placed on the rotating shaft forming armature in the first round slot bore and the second round slot bore respectively.
In one embodiment, normal operation of circuit breaker, the spring force of extension spring makes to hit bar near support, and armature relies on the first inclined-plane and is separated with yoke with on the second inclined-plane, hits bar and is separated with the tripping mechanism of circuit breaker.Occur short circuit current in circuit breaker, short circuit current produces electromagnetic force, and electromagnetic force makes yoke and armature attract each other, and armature, around its axis of rotation, drives and hits bar around holder pivots, and strike bar contacts with the tripping mechanism of circuit breaker and makes circuit breaker tripping.
Standby electromagnet protection mechanism structure of the present utility model is simple, is convenient to install, and can effectively shorten short circuit breaking required time, improve the short circuit breaking capacity of circuit breaker, and breaker circuit is protected more comprehensively.
Accompanying drawing explanation
The above and other feature of the utility model, character and advantage are by more obvious by what become below in conjunction with the description of drawings and Examples, and Reference numeral identical in the accompanying drawings represents identical feature all the time, wherein:
Fig. 1 discloses the structure chart of the standby electromagnet protection mechanism according to an embodiment of the present utility model.
Fig. 2 A discloses the scheme of installation of standby electromagnet protection mechanism in circuit breaker according to an embodiment of the present utility model.
Fig. 2 B is the partial enlarged drawing of Fig. 2 A.
Fig. 3 A and Fig. 3 B discloses in circuit breaker for installing the structure chart of the base module of standby electromagnet protection mechanism of the present utility model.
Fig. 4 discloses the operating state of the ferromagnetic iron protection mechanism of this standby when normal operation of circuit breaker.
Fig. 5 discloses the operating state of this standby ferromagnetic iron protection mechanism when to there is short circuit current in circuit breaker.
Embodiment
Shown in figure 1, Fig. 1 discloses the structure chart of the standby electromagnet protection mechanism according to an embodiment of the present utility model.This standby electromagnet protection mechanism 110 comprises support 111, hits bar 112, yoke 113, armature, extension spring 116.
Support 111 is generally u-shaped for installing the part of hitting bar 112.Support 111 has the rotating shaft 111A stretched out in the one end being positioned at U-shaped opening, the shaft hole sleeve on strike bar 112 is on rotating shaft 111A, and making to hit bar 112 can rotate by 111A around the shaft.Hit on bar 112 and there is location hole of the spring 112B and armature installing hole 112C.One end of extension spring 116 is fixed on the spring locating shaft 111B of support 111, and spring locating shaft 111B is positioned at U-shaped bottom.The other end of extension spring 116 is fixed in the location hole of the spring 112B hit on bar 112.Under the effect of the spring force of extension spring 116, hit bar 112 across contacting with support 111 above U-shaped opening.
Armature is assembled by the first plate 114 and the second plate 115 and is formed.In one embodiment, the first plate 114 and the second plate 115 can by such as riveting, folded rivet tightly join, securing member installs or the mode of welding specially matches as a whole, forms armature.Second plate 115 has two place's extended structures, and the first extended structure is generally t-shaped, and the first extended structure is positioned on a long limit of armature.The T-shaped two ends of the first extended structure form the first elongated end 115A and the second elongated end 115B.Second extended structure is extension rod 115C, and extension rod 115C is positioned on a minor face of armature.Extension rod 115C is arranged in the armature installing hole 112C hitting bar 112, armature is connected as a single entity with strike bar 112, can links.In the illustrated embodiment in which, the angle that armature is illustrated as tilting is arranged on hits on bar 112.
Shown in figure 2A and Fig. 2 B, this standby electromagnet protection mechanism is arranged in circuit breaker.Shown in Fig. 3 A and Fig. 3 B, this standby electromagnet protection mechanism is mounted in circuit breaker, specifically, is mounted on base module.Support 111 is fixed on outside the base module 121 of circuit breaker, and in one embodiment, support 111 is fixed by screws on the base module 121 of circuit breaker.Shown in figure 2A, base module 121 has a perforate, the rotating shaft 111A on support 111 inserts this perforate.Base module 121 also has arcuate socket, and the extension rod 115C of armature stretches out this arcuate socket and is connected with strike bar 112.This base module 121 is spliced and combined by the first module 117 and the second module 119 and is formed.First module 117 and the second module 119 have the structure of almost symmetry.As shown in Figure 3 A and Figure 3 B, so-called almost symmetry refers to the first module 117 and the second module 119 to have symmetrical perforate, groove etc. mechanism in the position of correspondence, for holding the corresponding component of standby electromagnet protection mechanism.But for the consideration of the first module 117 and the second module 119 splicing mutually, the first module 117 and the second module 119 being couplings mutually for the parts realizing splicing, is such as corresponding projection and recessed etc.Continue with reference to shown in figure 3A and Fig. 3 B, the first module 117 and the second module 119 have the first round slot bore 117A and the second round slot bore 119A respectively.The first inclined-plane 117B and the second inclined-plane 119B respectively in the below of the first round slot bore 117A and the second round slot bore 119A.Armature in standby electromagnet protection mechanism is clamped in the base module of assembling formation after splicing by the first module 117 and the second module 119.Shown in figure 2A and Fig. 2 B, when the armature of standby electromagnet protection mechanism is installed to after in base module, the first elongated end 115A and the second elongated end 115B extend in the first round slot bore 117A and the second round slot bore 119A respectively.Be arranged in the rotating shaft of the first elongated end 115A of the first round slot bore 117A and the second round slot bore 119A and the second elongated end 115B as armature, making to fold by the first plate 114 and the second plate 115 armature that riveting formed can rotate.And the first inclined-plane 117B and the second inclined-plane 119B can limit rotational angle and the turned position of armature.Wherein Fig. 2 B is the enlarged drawing of the first elongated end 115A in Fig. 2 A, the second elongated end 115B and the first round slot bore 117A, the second round slot bore 119A part, and in fig. 2, the part of this amplification represents with symbol P.As shown in Figure 2 A, when this standby electromagnet protection mechanism is installed to after on circuit breaker, hit the release lever 120 of position in tripping mechanism of bar 112.
Continue with reference to shown in figure 2A, yoke 113 is placed on (busbar 123 is pointed out in figures 4 and 5) above busbar 123 and gusset piece 118.Yoke 113 has two hole 113A, gusset piece 118 has screwed hole, and busbar 123 also has hole on a corresponding position.Use screw 122, such as yoke 113, busbar 123 and gusset piece 118 are fixed together through this some holes by soket head cap screw 122.It should be noted that, although yoke 113 is parts of standby electromagnet protection mechanism 110, yoke 113 is not with support 111 or hit bar 112 and be fixed together, and yoke 113 is fixed together with busbar 123 and gusset piece 118.
Fig. 4 and Fig. 5 discloses the operating state of this standby electromagnet protection mechanism.The operating state of this standby ferromagnetic iron protection mechanism when wherein Fig. 4 is normal operation of circuit breaker, Fig. 5 is the operating state of this standby ferromagnetic iron protection mechanism when there is short circuit current in circuit breaker.
As shown in Figure 4, circuit breaker in normal operation, due to the effect of the spring force of extension spring 116, hits bar 112 and is fixed on support 111, namely hit the top that bar 112 is pressed in the U-shaped opening of support 111.As shown in Figure 1, because armature is that the angle tilted is arranged on strike bar 112, therefore now armature is separated with yoke 113.Namely when normal operation of circuit breaker, the spring force of extension spring 116 makes armature away from yoke 113, and strike bar 112 does not contact with the release lever 120 in tripping mechanism, the tripping mechanism be made up of release lever 120, dropout support 125 and trip link 124 is ignorant of doing, and circuit breaker can not be threaded off.Get back to Fig. 2 A, when armature is away from yoke 113, armature rely on the first module 117 and the second module 119 are positioned at the below of the first round slot bore 117A and the second round slot bore 119A the first inclined-plane 117B and the second inclined-plane 119B on.
As shown in Figure 5, when occurring short circuit current in circuit breaker, compare if any short circuit current through breaker body, electromagnetic attraction is produced between yoke 113 and armature, electromagnetic attraction is greater than the spring force of extension spring 116, make armature to be arranged in the first elongated end 115A of the first round slot bore 117A and the second round slot bore 119A and the second elongated end 115B as rotating shaft, the direction towards yoke 113 rotates.Hit in bar 112 because armature is fixed on and links with strike bar 112, therefore driving strike bar 112 to rotate around the rotating shaft 111A on support 111.Contact with release lever 120 after strike bar 112 rotates and drive release lever 120 to move.After release lever 120 arrives at trip positions, drive dropout support 125 to move together with trip link 124, make tripping mechanism action, circuit breaker tripping.
Standby electromagnet protection mechanism structure of the present utility model is simple, is convenient to install, and can effectively shorten short circuit breaking required time, improve the short circuit breaking capacity of circuit breaker, and breaker circuit is protected more comprehensively.
Above-described embodiment is available to be familiar with person in the art to realize or to use of the present utility model; those skilled in the art can when not departing from utility model thought of the present utility model; various modifications or change are made to above-described embodiment; thus protection range of the present utility model not limit by above-described embodiment, and should be the maximum magnitude meeting the inventive features that claims are mentioned.
Claims (7)
1. a standby electromagnet protection mechanism, is characterized in that, comprising: support, strike bar, yoke, armature and extension spring;
Hitting bar is rotatably installed on support, and on the busbar that yoke is arranged on circuit breaker and gusset piece, armature is arranged on and hits on bar, and extension spring is arranged on support and hits between bar;
The spring-force driven dual of extension spring is in strike bar, hit bar near support, armature is separated with yoke, hit bar to be separated with the tripping mechanism of circuit breaker, short circuit current in circuit breaker produces electromagnetic force, electromagnetic force makes yoke and armature attract each other, and armature drives and hits bar around holder pivots, and strike bar contacts with the tripping mechanism of circuit breaker and makes circuit breaker tripping.
2. standby electromagnet protection mechanism as claimed in claim 1, is characterized in that, the part that described support installing hits bar is U-shaped, has the rotating shaft of stretching out in one end of U-shaped opening, and the shaft hole sleeve on strike bar, in rotating shaft, hits bar and rotates around the axis.
3. standby electromagnet protection mechanism as claimed in claim 1; it is characterized in that; armature is assembled by the first plate and the second plate and is formed; there are two place's extended structures on the second plate; first extended structure is T-shaped, and the first extended structure is positioned on long limit, and the T-shaped two ends of the first extended structure form the first elongated end and the second elongated end; second extended structure is extension rod, and extension rod is positioned on minor face.
4. standby electromagnet protection mechanism as claimed in claim 3, is characterized in that,
Described strike bar have location hole of the spring and armature installing hole;
Described extension rod is arranged in the armature installing hole hitting bar.
5. standby electromagnet protection mechanism as claimed in claim 3, it is characterized in that, this standby electromagnet protection mechanism is arranged in circuit breaker, is arranged on base module;
Support is fixed on outside base module, and armature is arranged in base module.
6. standby electromagnet protection mechanism as claimed in claim 5, is characterized in that,
Described base module is combined to form by the first module and the splicing of the second module, and the first module and the second module have the first round slot bore and the second round slot bore respectively, and the below of the first round slot bore and the second round slot bore is the first inclined-plane and the second inclined-plane respectively;
First elongated end of armature and the second elongated end are placed on the rotating shaft forming armature in the first round slot bore and the second round slot bore respectively.
7. standby electromagnet protection mechanism as claimed in claim 5, is characterized in that,
Normal operation of circuit breaker, the spring force of extension spring makes to hit bar near support, and armature relies on the first inclined-plane and is separated with yoke with on the second inclined-plane, hits bar and is separated with the tripping mechanism of circuit breaker;
Occur short circuit current in circuit breaker, short circuit current produces electromagnetic force, and electromagnetic force makes yoke and armature attract each other, and armature, around its axis of rotation, drives and hits bar around holder pivots, and strike bar contacts with the tripping mechanism of circuit breaker and makes circuit breaker tripping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520580509.8U CN204857629U (en) | 2015-08-05 | 2015-08-05 | Reserve electro -magnet protection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520580509.8U CN204857629U (en) | 2015-08-05 | 2015-08-05 | Reserve electro -magnet protection mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204857629U true CN204857629U (en) | 2015-12-09 |
Family
ID=54748156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520580509.8U Active CN204857629U (en) | 2015-08-05 | 2015-08-05 | Reserve electro -magnet protection mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204857629U (en) |
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2015
- 2015-08-05 CN CN201520580509.8U patent/CN204857629U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |