CN215869208U - High-insulation performance structure of circuit breaker - Google Patents
High-insulation performance structure of circuit breaker Download PDFInfo
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- CN215869208U CN215869208U CN202121142134.9U CN202121142134U CN215869208U CN 215869208 U CN215869208 U CN 215869208U CN 202121142134 U CN202121142134 U CN 202121142134U CN 215869208 U CN215869208 U CN 215869208U
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Abstract
The utility model discloses a high-insulation performance structure of a circuit breaker, which is characterized in that: including casing (1) of circuit breaker, casing (1) business turn over line end is equipped with insulating protruding (2), insulating protruding for triangle-shaped, rectangle or circular. The utility model designs the shell structure which influences the insulating property of a product, designs one side of an inlet wire end and an outlet wire end of a shell of the product into insulating bulges so as to increase the creepage distance between poles, and simultaneously adds a hollow design in the shell to reduce the pollution of metal ions generated in the contact opening and closing process to the poles, thereby improving the insulating dielectric strength of the product.
Description
Technical Field
The utility model relates to the technical field of circuit breakers, in particular to a high-insulation-performance structure of a circuit breaker.
Background
The aviation circuit breaker is small in product size, complex in internal structure and small in metal part distance, and in application, the surface of a product shell is polluted, the inter-electrode creepage distance is insufficient, the inter-electrode short circuit phenomenon occurs, and the product is easy to work unreliability. For example, chinese patent CN111584315A discloses a low current thermal trip aviation circuit breaker, wherein the housing between the incoming and outgoing terminals is flat, and the insulation between the terminals is mainly isolated by air between the terminals.
Disclosure of Invention
The utility model aims to provide a high-insulation-performance structure of a circuit breaker. The shell of the utility model is designed to be protruded, the creepage distance between poles is increased, and the pollution of metal ions to the poles generated in the process of opening and closing the contact is reduced, thereby improving the insulating dielectric strength of the product.
The technical scheme of the utility model is as follows: the high-insulation performance structure of the circuit breaker comprises a shell of the circuit breaker, wherein an inlet wire end and an outlet wire end of the shell are provided with insulation protrusions, and the insulation protrusions are triangular, rectangular or circular.
In the high-insulation performance structure of the circuit breaker, the insulation protrusions are triangular.
In the high-insulation-performance structure of the circuit breaker, the insulating protrusion is internally provided with the hollow insulating part.
In the high-insulation-performance structure of the circuit breaker, the shape of the hollow part of the hollow insulation part is the same as that of the insulation protrusion.
In the structure with high insulating performance of the circuit breaker, the size of the hollow insulating part is 20-80% of the size of the insulating protrusion.
According to the high-insulation-performance structure of the circuit breaker, the bottom edge of the insulation protrusion is 3.1-6.2 mm in size, and the height of the insulation protrusion is 1.8-5.2 mm.
According to the high-insulation-performance structure of the circuit breaker, the bottom edge of the insulation protrusion is 4.2-5.1 mm in size, and the height of the insulation protrusion is 2.1-4.5 mm.
Has the advantages that: compared with the prior art, the utility model designs the shell structure influencing the insulating property of the product, designs one side of the inlet and outlet wire ends of the shell of the product into the insulating protrusion to increase the creepage distance between poles, and simultaneously adds the hollow design in the shell to reduce the pollution of metal ions between poles generated in the process of opening and closing the contacts, thereby improving the insulating dielectric strength of the product, and carries out the test verification of the insulating dielectric strength according to the test method of GJB5885-2006 aviation breaker general Specification, so that the insulating dielectric strength of the product meets the general Specification requirements, the insulating strength under low air pressure can reach 125 ℃, 2.5kPa (25000m), and the insulating property index of the product is advanced at home and abroad.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The utility model is further illustrated by the following figures and examples, which are not to be construed as limiting the utility model.
Example 1. The high insulating property structure of circuit breaker, including the casing 1 of circuit breaker, 1 business turn over line end of casing is equipped with insulating protruding 2.
The insulating protrusion 2 is triangular, rectangular or circular, and the like, and the existing geometric shape can be used, so that the insulating effect is not influenced.
In order to facilitate the wiring installation of the circuit breaker, the insulating protrusion 2 is triangular.
And a hollow insulating part 3 is arranged in the insulating protrusion 2, so that the insulating effect is further improved.
The shape of the hollow part of the hollow insulating part 3 is the same as that of the insulating protrusion 2, and meanwhile, the size of the hollow insulating part 3 is 20-80% of that of the insulating protrusion 2, so that the insulating effect is good.
Through tests, the insulating bulge 2 has the advantages of 3.1-6.2 mm of bottom edge, 1.8-5.2 mm of height and good effect. More preferably, the insulating protrusion 2 has a size with a bottom side of 4.2mm to 5.1mm and a height of 2.1mm to 4.5 mm.
The working principle is as follows: the appearance design of casing 1 business turn over line end is insulating protruding 2, and corresponding 1 inboard hollow insulating portion 3 of design of casing can increase business turn over line end creepage distance between utmost point, reduces the metal ion that the contact cut-off in-process produced and to pollute between the utmost point to promote product medium withstand voltage.
Example 2. The high insulating property structure of circuit breaker, including the casing 1 of circuit breaker, 1 business turn over line end of casing is equipped with insulating protruding 2.
The insulating protrusion 2 is triangular, rectangular or circular, and the like, and the existing geometric shape can be used, so that the insulating effect is not influenced.
The shape of the hollow part of the hollow insulating part 3 is the same as that of the insulating protrusion 2, and the size of the hollow insulating part 3 is 40-60% of that of the insulating protrusion 2.
The bottom edge of the size of the insulating protrusion 2 is 4.6mm, and the height of the insulating protrusion is 3.0 mm.
Example 3. The high insulating property structure of circuit breaker, including the casing 1 of circuit breaker, 1 business turn over line end of casing is equipped with insulating protruding 2.
The insulating protrusion 2 has a trapezoidal shape.
The hollow insulating part 3 has the same shape as the insulating protrusion 2, and the size of the hollow insulating part 3 is 50% of the size of the insulating protrusion 2.
The bottom edge of the size of the insulating protrusion 2 is 4.8mm, and the height of the insulating protrusion is 3.5 mm.
Claims (7)
1. A high insulating property structure of circuit breaker, its characterized in that: the circuit breaker comprises a shell (1) of the circuit breaker, wherein an insulating protrusion (2) is arranged at the wire inlet and outlet end of the shell (1); the insulating protrusion (2) is triangular, rectangular or circular.
2. The high insulation performance structure of a circuit breaker according to claim 1, wherein: the insulating protrusion (2) is triangular.
3. The high insulation performance structure of a circuit breaker according to claim 1, wherein: the insulating protrusion (2) is internally provided with a hollow insulating part (3).
4. The high insulation performance structure of a circuit breaker according to claim 3, wherein: the shape of the hollow part of the hollow insulating part (3) is the same as that of the insulating protrusion (2).
5. The high insulation performance structure of a circuit breaker according to claim 4, wherein: the size of the hollow insulating part (3) is 20-80% of that of the insulating protrusion (2).
6. The high insulation performance structure of a circuit breaker according to claim 1, wherein: the bottom edge of the insulating bulge (2) is 3.1-6.2 mm in size, and the height of the insulating bulge is 1.8-5.2 mm.
7. The high insulation performance structure of a circuit breaker according to claim 6, wherein: the bottom edge of the insulating bulge (2) is 4.2-5.1 mm in size, and the height of the insulating bulge is 2.1-4.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121142134.9U CN215869208U (en) | 2021-05-26 | 2021-05-26 | High-insulation performance structure of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121142134.9U CN215869208U (en) | 2021-05-26 | 2021-05-26 | High-insulation performance structure of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215869208U true CN215869208U (en) | 2022-02-18 |
Family
ID=80317165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121142134.9U Active CN215869208U (en) | 2021-05-26 | 2021-05-26 | High-insulation performance structure of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215869208U (en) |
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2021
- 2021-05-26 CN CN202121142134.9U patent/CN215869208U/en active Active
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