CN202352596U - Improved circuit breaker for equipment - Google Patents
Improved circuit breaker for equipment Download PDFInfo
- Publication number
- CN202352596U CN202352596U CN2011204519372U CN201120451937U CN202352596U CN 202352596 U CN202352596 U CN 202352596U CN 2011204519372 U CN2011204519372 U CN 2011204519372U CN 201120451937 U CN201120451937 U CN 201120451937U CN 202352596 U CN202352596 U CN 202352596U
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- bimetallic strip
- bimetal leaf
- moving contact
- spring
- Prior art date
- 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 - Fee Related
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Abstract
The utility model relates to an improved circuit breaker for equipment. The circuit breaker for equipment comprises a base (6), a button (1) and a bimetallic strip (3), wherein one end of the bimetallic strip (3) is electrically connected with one terminal (11) of the circuit breaker, the other end of the bimetallic strip (3) is provided with a moving contact (9), a fixed contact (8) matched with the moving contact (9) is electrically connected with the other terminal (7) of the circuit breaker, one end of a spring (4) is connected with the moving contact end of the bimetallic strip (3), and the other end of the spring (4) is connected with a screw fixed on the base (6). According to the improved circuit breaker for equipment, a force regulating mechanism is used for changing the acting force of the spring during up and down displacement, reasonable acting force for an instantaneous mechanism is guaranteed, the requirement for tripping characteristic is satisfied, the modulus of elasticity and the reacting force of bending ratio of the bimetallic strip can be effectively controlled through the control of the acting force of the spring, and instantaneous tripping function is achieved.
Description
Technical field
The utility model relates to a kind of improved equipment circuit breaker, relates to the overload protective device field.
Background technology
Circuit breaker is the overload protective device of using always, mainly is made up of bimetal leaf (bimetal leaf) and spring leaf, and its function is an on-off circuit.When the electric current through circuit breaker promptly transshipped greater than its rated current, this device control circuit broke off.Circuit should be fixed a breakdown earlier, again by the hand-reset turning circuit after breaking off.Clear and definite regulation in the existing standard: circuit breaker in working order following electric current multiple and drop-away time numerical value synthetic thread off to move be with.In existing a kind of breaker structure; The contact pressure of bimetallic assembly is unstable; Again because receive elasticity modulus of materials, the crooked geometric influence of material when; The tripping characteristic of circuit breaker departs from the curve ranges of action band easily and has poor contact phenomenon, also just can not play the effect of instantaneous trip simultaneously, has influenced the effect and the function of circuit breaker break-make.
Summary of the invention
To the shortcoming of prior art, the technical problem that the utility model will solve provides a kind of equipment of ability instantaneous trip and uses circuit breaker.
For achieving the above object; The technical scheme that the utility model adopts is: improved equipment circuit breaker, comprise pedestal, button, bimetal leaf, and an end of bimetal leaf is electrically connected terminals of said circuit breaker; The other end is provided with moving contact; The fixed contact that cooperates with moving contact is electrically connected with another terminals of circuit breaker, and an end of reed is connected with the movable contact head end of bimetal leaf, and the other end of reed links to each other with screw on being fixed on pedestal (6).
The beneficial effect that the relative prior art of the utility model reaches is: the active force when the utility model utilizes the power governor motion to change the upper and lower displacement of reed guarantees that the wink actuation mechanism has rational active force, satisfies the tripping characteristic requirement; Can make effective control to the modulus of elasticity of bimetal leaf, the effect counter-force of bend ratio through the active force of control reed simultaneously, realize the instantaneous trip function.
Description of drawings
Fig. 1 is traditional fashionable cut-away view of circuit breaker closing.
Fig. 2 is the traditional circuit breaker cut-away view when breaking off.
Cut-away view when Fig. 3 is the utility model closure.
Cut-away view when Fig. 4 is the utility model disconnection.
Embodiment
Specify the embodiment of the utility model below in conjunction with accompanying drawing.
Fig. 1, Fig. 2 are respectively closed, the cut-away views when breaking off of the conventional circuit breaker described in the background technology.Wherein, Reed 6 one ends are that bimetal leaf 3 is connected with bimetal leaf, and the other end is fixed on pedestal 6 inwalls, owing to receive the influence of the caused active force of reed self-characteristic; Contact dropout unstable properties, and can not be according to this active force of requirement adjustment of rated current.
Cut-away view when Fig. 3 is the utility model closure.The pedestal 6 of circuit breaker is provided with the cover plate (not shown), and button 1 one ends stretch out outside the pedestal 6, and the other end is provided with spring 2, and button 1 is pressed on the bimetal leaf 3.With illustrated left and right sides above-below direction is reference direction, and bimetal leaf 3 one ends are electrically connected right terminals 11 through copper rivet 10, and the other end is provided with moving contact 9, and the fixed contact 8 that cooperates with moving contact is electrically connected left terminals 7.Bimetal leaf 3 connects reed 4 at an end that is provided with moving contact; The other end of reed 4 links to each other with screw on being fixed on pedestal (6); As tightening by the screw 5 that is located on the pedestal 6; The active force of adjustment reed is so that it is in the best, rational dynamic balance state with the thermal deformation counter-force of bimetallic assembly.
When the electric current through circuit breaker during greater than its rated current, because the upper strata metal of bimetal leaf 3 is littler than the thermal coefficient of expansion of lower metal, lower metal is bigger than upper strata flow of metal; So bimetal leaf 3 upwarps; An end that drives reed 4 also upwarps, when moving on the reed 4 above himself last balance point, and the reed 4 moving contact 9 instantaneous disengaging fixed contacts 8 on the drive bimetal leaf 3 of upspringing fast; Thereby circuit is broken off, as shown in Figure 4.Equally, during reset of breaker, touch the button 1 down, bimetal leaf 3 one ends move down drive reed 4 one ends and move down, and when reed 4 surpassed the following balance point of self, reed 4 moved down the moving contact 9 instantaneous contact fixed contacts 8 that drive on the bimetal leaf 3 fast, thereby connected circuit.
Claims (1)
1. an improved equipment circuit breaker comprises pedestal (6), button (1), bimetal leaf (3), and button (1) one end stretches out outside the pedestal (6); The other end is provided with spring (2); Button (1) is pressed on the bimetal leaf (3), and an end of bimetal leaf (3) is electrically connected terminals (11) of said circuit breaker, and the other end is provided with moving contact (9); The fixed contact (8) that cooperates with moving contact (9) is electrically connected with another terminals (7) of circuit breaker; One end of reed (4) is connected with the movable contact head end of bimetal leaf (3), it is characterized in that, the other end of reed (4) links to each other with screw on being fixed on pedestal (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204519372U CN202352596U (en) | 2011-11-15 | 2011-11-15 | Improved circuit breaker for equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204519372U CN202352596U (en) | 2011-11-15 | 2011-11-15 | Improved circuit breaker for equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202352596U true CN202352596U (en) | 2012-07-25 |
Family
ID=46541580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204519372U Expired - Fee Related CN202352596U (en) | 2011-11-15 | 2011-11-15 | Improved circuit breaker for equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202352596U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795968A (en) * | 2017-11-23 | 2018-03-13 | 江门黑氪光电科技有限公司 | A kind of high-voltage LED light bar with overload protection function |
-
2011
- 2011-11-15 CN CN2011204519372U patent/CN202352596U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795968A (en) * | 2017-11-23 | 2018-03-13 | 江门黑氪光电科技有限公司 | A kind of high-voltage LED light bar with overload protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20121115 |