CN203038874U - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN203038874U CN203038874U CN 201220738324 CN201220738324U CN203038874U CN 203038874 U CN203038874 U CN 203038874U CN 201220738324 CN201220738324 CN 201220738324 CN 201220738324 U CN201220738324 U CN 201220738324U CN 203038874 U CN203038874 U CN 203038874U
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- CN
- China
- Prior art keywords
- release
- operating mechanism
- iron core
- magnetic
- circuit breaker
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides a circuit breaker, belonging to the technical field of low-voltage electrical appliances. The circuit breaker comprises an operating mechanism, a contact system, an arc extinguish chamber, a heat releaser and a magnetic releaser. The operating mechanism, the magnetic releaser and the arc extinguish chamber are arranged on a height direction of a circuit breaker body from top to bottom in order. When short-circuit current passes through a line, the magnetic releaser drives the operating mechanism to operate, the operating mechanism drives the contact system to operate, thus a moving contact and a static contact are disconnected, and the short-circuit current is broken by the circuit breaker. When overload current passes through the line, the heat releaser is heated and bended to drive the operating mechanism to operate, the operating mechanism drives the contact system to operate, thus the moving contact and the static contact are disconnected, and the overload current is broken by the circuit breaker. The circuit breaker is characterized in that the heat releaser is installed at one side of a moving iron core of the magnetic releaser and the heat releaser and the moving iron core are staggered in a movement direction of the moving iron core so that a motion trajectory of the heat releaser and a motion trajectory of the moving iron core of the magnetic releaser are not in mutual interference. The circuit breaker has the advantages that the reliability of a releasing action is ensured, and the miniaturization demand of the circuit breaker is satisfied.
Description
Technical field
The utility model belongs to the low voltage electrical apparatus technology field, is specifically related to a kind of circuit-breaker
Background technology
Application for a patent for invention publication No. CN102110557A(application number: 201010268557.5) disclosed " circuit-breaker " is a kind of circuit breaker that is used for route protection with heat, magnetic release device; its over current trip is heat, magnetic-type release; the relaying terminal is connected with the end winding of magnetic release; and the thermal overload release bottom is connected with the relaying terminal, and soft connection is connected with bimetal leaf.Before and after showing as, position relation between the moving iron core of obvious its thermal overload release and magnetic release installs, this mounting means has simple in structure for the less demanding circuit breaker of length direction, easy-to-install strong point, but then need to take different structures and mounting means to realize to the conditional miniaturization circuit breaker of length direction.In addition, the moving iron core of thermal overload release and magnetic release is installed in the process that travels forward when existing thermal overload release to be heated over against front and back and is subjected to the anxiety that stops of magnetic release, so can consider the mounting means of heat, magnetic release is optimized
Summary of the invention
Task of the present utility model is to provide a kind of helping avoid to suffer the stopping of moving iron core of magnetic release in the thermal overload release temperature distortion process and use the reliability that ensures the action of threading off and be conducive to dwindle the size of circuit breaker length direction to satisfy the circuit-breaker that the circuit breaker miniaturization requires.
Task of the present utility model is finished like this, a kind of circuit-breaker, comprise operating mechanism, contact system, arc control device, thermal overload release and magnetic release, wherein: operating mechanism, magnetic release and arc control device are successively set on the short transverse of breaker body from top to bottom, when the circuit short circuit current flow, magnetic release drives the operating mechanism action, and operating mechanism drives the contact system action, moving contact and fixed contact are disconnected, by circuit breaker disjunction short circuit current; And when line flows is crossed overload current; the crooked operating mechanism that drives of thermal overload release heating moves; operating mechanism drives the contact system action; moving contact, fixed contact are disconnected; disconnect overload current by circuit breaker, be characterized in: described thermal overload release be installed in magnetic release moving iron core a side and stagger each other on the moving iron core direction of motion with moving iron core and use the movement locus mutually noninterfere of the moving iron core of the movement locus that makes thermal overload release and magnetic release.
In a specific embodiment of the present utility model, described magnetic release has for the magnetic release strike bar that hits described operating mechanism, and this magnetic release hits the position of bar and stagger in the position of described thermal overload release.
In another specific embodiment of the present utility model, described thermal overload release comprises bimetal leaf, the setting of staggering each other on the direction of motion of moving iron core of bimetal leaf and described moving iron core.
The technical scheme that the utility model provides is owing to stagger the position of the moving iron core of thermal overload release and magnetic release, thereby thermal overload release can not suffer the interference of the moving iron core of magnetic release when temperature distortion is crooked, the reliability of action of guaranteeing to thread off, and can dwindle the size of circuit breaker length direction effectively and satisfy circuit breaker miniaturization requirement.
Description of drawings
Fig. 1 is the end view of utility model structure of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is that thermal overload release and the position of magnetic release before assembling shown in Figure 1 concerns schematic diagram.
Fig. 4 is that thermal overload release and the position of magnetic release after assembling shown in Figure 1 concerns schematic diagram.
Embodiment
In order to make the public can fully understand technical spirit of the present utility model and beneficial effect; the applicant will describe in detail embodiment of the present utility model below by reference to the accompanying drawings; but the applicant is not restriction to technical scheme to the description of embodiment, anyly makes form but not the variation of essence all should be considered as protection range of the present utility model according to the present invention's design.
Ask for an interview Fig. 1 and Fig. 2; the circuit-breaker of the present utility model that is used for route protection has thermal overload release 2; magnetic release 3; operating mechanism 1; contact system 4; arc control device 5; wherein; operating mechanism 1(is in the low voltage electrical apparatus technology field; belong to known technology); magnetic release 3 and arc control device 5 are successively set on the short transverse of breaker body from top to bottom; thermal overload release 2; magnetic release 3 all is positioned at a side (left side) of contact system 4, and the magnetic release of magnetic release 3 hits bar 32 fixedlys connected with moving iron core 31 ends of magnetic release, and adjustment screw 22 is fixed with bimetal leaf 21 1 ends of thermal overload release 2.Among the figure, tripping lever 12 and snap close lever 13 hasps of operating mechanism 1, snap-in position is represented that by the h among the figure moving contact 41, fixed contact 42 are in the close position, operating mechanism 1 is in closing position.
When the circuit breaker short circuit current flow, moving iron core 31 actions of magnetic release 3, and drive magnetic release strike bar 32 moves right, promoting tripping lever 12 trips with snap close lever 13, snap close lever 13 clockwise rotates to drive operating mechanism 1 action around snap close axle 131, thereby activate contact system 4 actions, make moving contact 41, fixed contact 42 separated from one another, and the handle 11 of operating mechanism 1 is in the dropout position 11a among Fig. 1.
In like manner, when circuit breaker flows through overload current, magnetic release 3 is failure to actuate, and bimetal leaf 21 moves owing to heated bending in the thermal overload release 2, promote tripping lever 12 by adjustment screw 22, tripping lever 12 is triped with snap close lever 13, and after tripping lever 12 is triped with snap close lever 13, snap close lever 13 clockwise rotates to drive operating mechanism 1 action around snap close axle 131, thereby activate contact system 4 actions, make moving contact 41, fixed contact 42 separated from one another, operating mechanism 1 handle 11 finally is in dropout position 11a.
Because thermal overload release and magnetic release all have movement locus separately when fault current is arranged, especially, when thermal overload release is subjected to overload current to be subjected to warm-up movement, the magnetic release that may be subjected to magnetic release 3 hits stopping of bar 32, thereby make the failure of triping of tripping lever 12 and snap close lever 13, operating mechanism 1 is failure to actuate.Therefore; in order to address the above problem; as depicted in figs. 1 and 2; thermal overload release 2 is installed in a side position of the moving iron core 31 of magnetic release 3; hitting bar 32 with magnetic release is arranged side by side; and thermal overload release 2 hits bar 32 with magnetic release and moving iron core 31 staggers on moving iron core 31 directions of motion each other; being thermal overload release 2 hits bar 32 and moving iron core 31 not point-blank with magnetic release; make thermal overload release 2 in magnetic release hits the size area L of bar 32; as shown in Figure 2; bimetal leaf 21 and magnetic release hit between the bar 32 and leave gap f; guarantee that thermal overload release 2 and the magnetic release of magnetic release 3 hit the movement locus mutually noninterfere of bar 32; and can reduce the size of circuit breaker length direction, thereby realize the miniaturization of circuit breaker.
Ask for an interview Fig. 3 and Fig. 4, Fig. 3 and Fig. 4 are respectively the resolution charts before and after thermal overload release 2 and magnetic release 3 are installed with support 6, as shown in Figure 3, the thermal overload release 2 that assembles enters the thermal overload release installation cavity 6a of support 6 along support 6 side direction, magnetic release 3 enters the magnetic release installation cavity 6b of support 6 along equidirectional support 6 side direction, the installation design sketch is seen shown in Figure 4, and the moving iron core 31 and the magnetic release that install back thermal overload release 2 and magnetic release 3 hit bar 32 dislocation installation side by side
Claims (3)
1.
A kind of circuit-breaker, comprise operating mechanism (1), contact system (4), arc control device (5), thermal overload release (2) and magnetic release (3), wherein: operating mechanism (1), magnetic release (3) and arc control device (5) are successively set on the short transverse of breaker body from top to bottom, when the circuit short circuit current flow, magnetic release drives operating mechanism (1) action, operating mechanism (1) drives contact system (4) action, moving contact (41) and fixed contact (42) are disconnected, by circuit breaker disjunction short circuit current; And when line flows is crossed overload current; the crooked operating mechanism (1) that drives of thermal overload release (2) heating moves; operating mechanism (1) drives contact system (4) action; moving contact (41), fixed contact (42) are disconnected; disconnect overload current by circuit breaker, it is characterized in that: described thermal overload release (2) be installed in magnetic release (3) moving iron core (31) a side and stagger each other on moving iron core (31) direction of motion with moving iron core (31) and use the movement locus mutually noninterfere of the moving iron core (31) of the movement locus that makes thermal overload release (2) and magnetic release (3).
2.
Circuit-breaker according to claim 1, it is characterized in that described magnetic release (3) has for the magnetic release strike bar (32) that hits described operating mechanism (1), and this magnetic release hits the position of bar (32) and stagger in the position of described thermal overload release (2).
3.
Circuit-breaker according to claim 1 is characterized in that described thermal overload release (2) comprises bimetal leaf (21), the setting of staggering each other on the direction of motion of moving iron core (31) of bimetal leaf (21) and described moving iron core (31)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220738324 CN203038874U (en) | 2012-12-28 | 2012-12-28 | Circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220738324 CN203038874U (en) | 2012-12-28 | 2012-12-28 | Circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203038874U true CN203038874U (en) | 2013-07-03 |
Family
ID=48690970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220738324 Expired - Lifetime CN203038874U (en) | 2012-12-28 | 2012-12-28 | Circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203038874U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134589A (en) * | 2014-07-17 | 2014-11-05 | 正泰集团股份有限公司 | Low-voltage circuit breaker with residual current trip device |
-
2012
- 2012-12-28 CN CN 201220738324 patent/CN203038874U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134589A (en) * | 2014-07-17 | 2014-11-05 | 正泰集团股份有限公司 | Low-voltage circuit breaker with residual current trip device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |
|
| CX01 | Expiry of patent term |