CN207587667U - A kind of thermal overload release of breaker of plastic casing - Google Patents
A kind of thermal overload release of breaker of plastic casing Download PDFInfo
- Publication number
- CN207587667U CN207587667U CN201721853673.7U CN201721853673U CN207587667U CN 207587667 U CN207587667 U CN 207587667U CN 201721853673 U CN201721853673 U CN 201721853673U CN 207587667 U CN207587667 U CN 207587667U
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- Prior art keywords
- bimetal leaf
- breaker
- thermal overload
- plastic casing
- overload release
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Abstract
A kind of thermal overload release of breaker of plastic casing, belongs to low voltage electrical apparatus technology field.Including bimetal leaf, one end of the bimetal leaf is fixing end, the other end forms the free end for being useful for actuating circuit breaker tripping, which is characterized in that the attemperator of the heat dissipation for reducing bimetal leaf is had additional on the bimetal leaf.It, even if under identical electrical current, by the attemperator added, can effectively reduce the heat dissipation capacity of bimetal leaf in the case where not increasing buckle releaser height, increase the bending deformation quantity of bimetal leaf, increase amount of deflection；Influence of the ambient temperature variation to bimetal leaf is reduced simultaneously, is effectively improved the operation precision and stability of thermal overload protection, is met buckle releaser overload protection characteristics requirement.
Description
Technical field
The utility model belongs to low voltage electrical apparatus technology field, and in particular to a kind of thermal overload release of breaker of plastic casing.
Background technology
Existing Thermomagnetic type breaker of plastic casing, generally use bimetallic element（Also known as Bimetal Elements）To realize thermal overload
Protection.Wherein the operation precision of thermal overload protection and stability are closely bound up with the amount of deflection of bimetallic element, and according to amount of deflection
Calculation formula, the amount of deflection of bimetallic element rise direct proportionality with its temperature.In the breaker of plastic casing of flattening, due to double gold
The height for belonging to element is severely limited, if the Wen Sheng of bimetallic element, the bending of bimetal leaf cannot be kept well
Deflection can not just be guaranteed, therefore be difficult to fully meet characteristic requirements of the thermal overload protection to operation precision and stability etc..
Invention content
The purpose of this utility model is to provide a kind of thermal overload release of breaker of plastic casing, even if leading in identical
It under electric current, also can further increase the bending deformation quantity of bimetal leaf, increase amount of deflection, while reduce ambient temperature variation
Influence to bimetal leaf effectively improves the operation precision and stability of thermal overload protection.
The purpose of this utility model is such to what is reached, a kind of thermal overload release of breaker of plastic casing, including double gold
Belong to piece, one end of the bimetal leaf is fixing end, the other end forms the free end for being useful for actuating circuit breaker tripping, and feature exists
In, had additional on the bimetal leaf for reducing bimetal leaf heat dissipation attemperator.
In a specific embodiment of the utility model, the attemperator be arranged on fixing end and free end it
Between.
In another specific embodiment of the utility model, the attemperator is sleeve.
In another specific embodiment of the utility model, the casing uses the material of good heat insulating, such as
Asbestos material.
In another specific embodiment of the utility model, the casing uses the good structure of softness, such as
Woven mesh structure.
In the utility model there are one in specific embodiment, the attemperator is directly in bimetal leaf
Surface brush coast of paint.
In the yet another specific embodiment of the utility model, the attemperator is directly in bimetal leaf
One layer of adiabatic gum band of surface wrap.
The utility model with the above structure, has the advantage that compared with prior art：It is not increasing dropout
In the case of device height, even if under identical electrical current, by the attemperator added, bimetal leaf can be effectively reduced
Heat dissipation capacity increases the bending deformation quantity of bimetal leaf, increases amount of deflection；Ambient temperature variation is reduced simultaneously to bimetal leaf
It influences, effectively improves the operation precision and stability of thermal overload protection, meet buckle releaser overload protection characteristics requirement.
Description of the drawings
Fig. 1 is the planar structure schematic diagram of one embodiment of the utility model.
Fig. 2 is the front view schematic diagram of Fig. 1 embodiments.
In figure：1. contact system；2. bimetallic element, 21. casings, 22. supporters, 23. bimetal leafs, 231. are fixed
End, 232. free ends, 24. actuated pieces；3. flexible connection；4. joint cover.
Specific embodiment
Applicant will below be described in detail, but applicant is to reality specific embodiment of the present utility model with reference to attached drawing
The description for applying example is not the limitation to technical solution, and any changed in the form rather than substance according to the utility model design all should
When being considered as the scope of protection of the utility model.
Please refer to Fig.1, Fig. 2, the utility model is related to a kind of thermal overload release of breaker of plastic casing, breaker of plastic casing by
Contact system 1（Moving contact is only shown in Fig. 1）, thermal overload release, flexible connection 3, the parts such as joint cover 4 composition.Thermal overload
Buckle releaser includes bimetallic element 2, and the bimetallic element 2 includes bimetal leaf 23 and supporter 22, the bimetal leaf 23
One end fix, the other end is equipped with actuated piece 24, and after 23 heated bending of bimetal leaf, the actuated piece 24 of the other end activates breaker
Tripping mechanism（It is not shown in figure）It threads off.Specifically, the fixing end 231 of 23 one end of bimetal leaf passes through the side welding or rivet
Formula is fixed on supporter 22, and the free end 232 of 23 other end of bimetal leaf is by realizing electricity between flexible connection 3 and joint cover 4
Connection.Therefore, under the closed state that the breaker of plastic casing of present embodiment is closed in contact system 1, current path is from plastic housing
The external terminal of breaker（It is not shown in figure）Contact system 1 is flowed through via supporter 22 and along the length direction of bimetal leaf 23
Flowing, after by flexible connection 3, flows to joint cover 44.The free end 232 of the bimetal leaf 23 for bimetal leaf 23 by
Thermal flexure actuating breaker of plastic casing is threaded off.The heat consumption for reducing bimetal leaf 23 is additionally provided on the bimetallic element 2
Scattered attemperator.The attemperator is arranged between fixing end 231 and free end 232.Certain attemperator is simple
Can directly the surface brush coast of paint of bimetal leaf 23 or winding one layer of adiabatic gum band（Electric insulating tape）Etc. use
In the measure for reducing the dissipation of 23 heat of bimetal leaf, this preferred embodiment, the attemperator preferably uses sleeve 21,
The casing 21 is set on bimetal leaf 23, for wrapping up the local surfaces of bimetal leaf 23.Certainly, casing 21 wraps up bimetallic
The longer the better for the length of piece 23.The material and structure of described sleeve pipe 21 are unrestricted, preferably use in the present embodiment
The good structure of softness can also be used, such as woven mesh structure in the material of good heat insulating, such as asbestos material.
According to 23 deflection formula of bimetal leaf, amount of deflection and temperature rise direct proportionality.For low current specification
Thermal overload release, in order to increase the calorific value of galvanic circle, generally use directly-heated type bimetallic element structure.Heat, which is transmitted, to be had
Three kinds of basic modes：Heat transfer, convection current, heat radiation.Insulation effect is played by being coated with one layer on the surface of bimetal leaf 23
Casing 21, it is possible to reduce convection current and heat radiation between bimetal leaf 23 and air effectively reduce the heat dissipation of bimetal leaf 23
Amount, increases amount of deflection, further improves the operation precision and stability of thermal overload protection.
Claims (7)
1. a kind of thermal overload release of breaker of plastic casing, including bimetal leaf (23), one end of the bimetal leaf (23) is solid
Fixed end (231), other end composition are useful for the free end (232) of actuating circuit breaker tripping, which is characterized in that in double gold
Belong to the attemperator that the heat dissipation for reducing bimetal leaf is had additional on piece (23).
A kind of 2. thermal overload release of breaker of plastic casing according to claim 1, it is characterised in that the heat preservation dress
It puts and is arranged between fixing end (231) and free end (232).
A kind of 3. thermal overload release of breaker of plastic casing according to claim 2, it is characterised in that the heat preservation dress
It is set to sleeve (21).
A kind of 4. thermal overload release of breaker of plastic casing according to claim 3, it is characterised in that the casing
(21) using the material of good heat insulating, such as asbestos material.
A kind of 5. thermal overload release of breaker of plastic casing according to claim 3, it is characterised in that the casing
(21) using the good structure of softness, such as woven mesh structure.
A kind of 6. thermal overload release of breaker of plastic casing according to claim 1, it is characterised in that the heat preservation dress
It is set to directly in the surface brush coast of paint of bimetal leaf (23).
A kind of 7. thermal overload release of breaker of plastic casing according to claim 1, it is characterised in that the heat preservation dress
It is set to directly in one layer of adiabatic gum band of surface wrap of bimetal leaf (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721853673.7U CN207587667U (en) | 2017-12-26 | 2017-12-26 | A kind of thermal overload release of breaker of plastic casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721853673.7U CN207587667U (en) | 2017-12-26 | 2017-12-26 | A kind of thermal overload release of breaker of plastic casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207587667U true CN207587667U (en) | 2018-07-06 |
Family
ID=62740099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721853673.7U Active CN207587667U (en) | 2017-12-26 | 2017-12-26 | A kind of thermal overload release of breaker of plastic casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207587667U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459445A (en) * | 2019-09-19 | 2019-11-15 | 常熟开关制造有限公司(原常熟开关厂） | Thermal overload release rated current method of adjustment and thermal overload release, breaker |
| CN111430185A (en) * | 2019-01-09 | 2020-07-17 | 厦门台松精密电子有限公司 | Relay structure with heat dissipation function |
-
2017
- 2017-12-26 CN CN201721853673.7U patent/CN207587667U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111430185A (en) * | 2019-01-09 | 2020-07-17 | 厦门台松精密电子有限公司 | Relay structure with heat dissipation function |
| CN111430185B (en) * | 2019-01-09 | 2022-06-17 | 厦门台松精密电子有限公司 | Relay structure with heat dissipation function |
| CN110459445A (en) * | 2019-09-19 | 2019-11-15 | 常熟开关制造有限公司(原常熟开关厂） | Thermal overload release rated current method of adjustment and thermal overload release, breaker |
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