Circuit breaker with built-in isolation
By designing the small chamber passage and protective components on the side of the pole column housing in the circuit breaker, the problems of inconvenient disassembly and poor protection effect of the connection parts of the existing circuit breaker are solved, and the easy assembly and effective protection of the connection parts are achieved, ensuring the connection stability and protective effect.
Patent Information
- Application Number
- CN202421479260.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The electrical connection structure design of the first coil terminal and the second terminal of the existing circuit breaker has problems such as inconvenient disassembly and poor protection effect, especially the lack of protective components, which leads to the connection area being susceptible to dust and rainwater.
A built-in isolation circuit breaker is designed, with a small chamber channel arranged on the side of the pole column housing, the first coil terminal is electrically connected to the second terminal through the small chamber channel, and a protective component is provided at the connection to prevent dust and rainwater from entering, ensuring the connection. protection and firmness.
It realizes the assembly convenience of the circuit breaker and the effective protection of the connection parts, prevents the intrusion of dust and rainwater, and enhances the stability and protection effect of the connection.
Smart Images
Figure CN222260927U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrical appliances, in particular to a circuit breaker. Background Art
[0002] The circuit breaker includes a mounting plate, two poles and a voltage transformer; the pole includes a pole shell, two terminals and a disconnection and connection assembly, the two terminals are respectively a first terminal on the upper side and a second terminal on the lower side, the interior of the pole shell is a shell cavity, the first terminal and the second terminal pass through the pole shell, the disconnection and connection assembly is installed in the shell cavity, the disconnection and connection assembly has two conductive ends, the first terminal and the second terminal are respectively connected to the two conductive ends; the voltage transformer includes an outer transformer shell, an iron core is installed inside the transformer shell, and two coils are wound on the iron core, the two coils are respectively a first coil and a second coil, the two coils have two terminals respectively, the two terminals of the first coil are first coil terminals, and the terminals of the second coil are second coil terminals; the two poles and the voltage transformer are respectively installed on the mounting plate, and the first coil terminals are respectively connected to the second terminals; the voltage transformer is provided to facilitate power supply from the second coil terminal.
[0003] In the prior art, the electrical connection structure design of the first coil terminal and the second terminal is unreasonable; for example, some are fixedly connected, which has the disadvantage of inconvenient connection and disassembly; for another example, some do not have protective components around the first coil terminal and the second terminal, which has the disadvantage of poor protection effect; improvements are needed. Summary of the invention
[0004] The purpose of the utility model is to provide a circuit breaker with built-in isolation, which is convenient to assemble and conducive to protecting the connection part between the first coil terminal and the second terminal, in view of the above shortcomings.
[0005] The technical scheme of the utility model is as follows: a circuit breaker with built-in isolation, which includes a mounting plate, two poles and a voltage transformer; the pole includes a pole shell, two terminals and a disconnection and connection assembly, the two terminals are respectively a first terminal on the upper side and a second terminal on the lower side, the interior of the pole shell is a shell cavity, the first terminal and the second terminal pass through the pole shell, the disconnection and connection assembly is installed in the shell cavity, the disconnection and connection assembly has two conductive ends, the first terminal and the second terminal are respectively connected to the two conductive ends; the voltage transformer includes an outer transformer shell, an iron core is installed in the transformer shell, and two coils are wound around the iron core, the two coils are respectively The first coil and the second coil, the two coils have two terminals respectively, the two terminals of the first coil are the first coil terminals, and the terminals of the second coil are the second coil terminals; the two poles and the voltage transformer are respectively mounted on the mounting plate, and the first coil terminals are respectively connected to the second terminals; its characteristics are: the side of the pole shell has a small chamber with an opening facing downward, the small chamber is connected to the small chamber channel, the small chamber channel has a side opening, the small chamber channel leads to the small chamber, and the second terminal is inside the small chamber; the first coil terminals are on both sides of the voltage transformer and are arranged upward, the first coil terminals first enter the small chamber channel, and then are inserted upward into the small chamber and electrically connected to the second terminal.
[0006] Furthermore, the first coil terminal also presents a tapered structure that is smaller at the top and larger at the bottom.
[0007] Furthermore, the first coil terminal is still in an extruded state inside the small chamber.
[0008] The beneficial effects of the utility model are as follows: such a circuit breaker has the advantages of being easy to assemble and being beneficial to protecting the connection portion between the first coil terminal and the second terminal. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a structural schematic diagram of the pole of the utility model.
[0010] Figure 2 It is a structural schematic diagram of the voltage transformer of the utility model.
[0011] Figure 3 It is a schematic diagram of the structure of a circuit breaker with built-in isolation of the utility model.
[0012] Figure 4 yes Figure 3 A is an enlarged schematic diagram.
[0013] Among them: 1, mounting plate 2, pole 21, pole housing 22, terminal 221, first terminal 222, second terminal 3, voltage transformer 31, transformer housing 32, iron core 33, first coil 331, first coil terminal 34, second coil 341, second coil terminal 41, small chamber 42, side opening 43, small chamber channel. DETAILED DESCRIPTION
[0014] The utility model is further described below in conjunction with the accompanying drawings.
[0015] like Figure 1 , 2 As shown in Figures 3 and 4, a circuit breaker with built-in isolation includes a mounting plate 1, two poles 2 and a voltage transformer 3; the pole includes a pole shell 21, two terminals 22 and a disconnection and connection assembly, the two terminals are a first terminal 221 on the top and a second terminal 222 on the bottom, the interior of the pole shell is a shell cavity 23, the first terminal and the second terminal pass through the pole shell, the disconnection and connection assembly is installed in the shell cavity, the disconnection and connection assembly is not shown in the figure, for example, the disconnection and connection assembly is a moving contact knife or a moving contact rod, the disconnection and connection assembly has two conductive ends, the first terminal and the second terminal are respectively connected to the two conductive ends; the voltage transformer includes an outer transformer shell 31, an iron core 32 is installed inside the transformer shell, and two coils are wound around it. Wound on the iron core, the two coils are the first coil 33 and the second coil 34, respectively, and the two coils have two terminals, the two terminals of the first coil are the first coil terminal 331, and the terminal of the second coil is the second coil terminal 341; the two poles and the voltage transformer are respectively mounted on the mounting plate, and the first coil terminals are respectively connected to the second terminals; its characteristics are: the side of the pole shell has a small chamber 41 with an opening facing downward, the small chamber is connected to a small chamber channel 43, the small chamber channel has a side opening 42, the small chamber channel leads to the small chamber, and the second terminal is inside the small chamber; the first coil terminals are on both sides of the voltage transformer and are arranged upward, the first coil terminals first enter the small chamber channel, and then are inserted upward into the small chamber and electrically connected to the second terminal.
[0016] The utility model is arranged in this way, dust and rainwater are not easy to enter the small chamber, which is beneficial to protecting the components of the connection position, that is, the periphery of the connection position between the first coil terminal and the second terminal of the pole is provided with a protective component, and the connection position is not easy to loosen, which can achieve the purpose of the utility model.
[0017] Furthermore, the first coil terminal also presents a tapered structure that is smaller at the top and larger at the bottom.
[0018] That is, the first coil terminal as a whole also presents a platform-shaped structure that is small at the top and large at the bottom. This arrangement is conducive to installing the first coil terminal into the small chamber.
[0019] Furthermore, the first coil terminal is still in an extruded state inside the small chamber.
[0020] The utility model is arranged in this way, thereby ensuring the firmness of the connection between the first coil terminal and the second terminal of the pole.
[0021] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.
Claims
1. A circuit breaker with built-in isolation, comprising a mounting plate, two poles and a voltage transformer; the pole comprises a pole shell, two terminals and a disconnection and connection assembly, the two terminals are respectively a first terminal on the upper side and a second terminal on the lower side, the interior of the pole shell is a shell cavity, the first terminal and the second terminal pass through the pole shell, the disconnection and connection assembly is installed in the shell cavity, the disconnection and connection assembly has two conductive ends, the first terminal and the second terminal are respectively connected to the two conductive ends; the voltage transformer comprises an outer transformer shell, an iron core is installed in the transformer shell, and two coils are wound on the iron core, the two coils are respectively a first coil and a second coil, the two coils have two terminals respectively, the two terminals of the first coil are first coil terminals, and the terminals of the second coil are second coil terminals; the two poles and the voltage transformer are respectively installed on the mounting plate, and the first coil terminals are respectively connected to the second terminals; its characteristics are: The side of the pole shell has a small chamber with an opening facing downward, the small chamber is connected to a small chamber channel, the small chamber channel has a side opening, the small chamber channel leads to the small chamber, and the second terminal is inside the small chamber; the first coil terminal is arranged on both sides of the voltage transformer and facing upward, the first coil terminal first enters the small chamber channel, and then is inserted upward into the small chamber and electrically connected to the second terminal.
2. The circuit breaker with built-in isolation according to claim 1, characterized in that: The first coil terminal also presents a tapered structure that is smaller at the top and larger at the bottom.
3. The circuit breaker with built-in isolation according to claim 1 or 2, characterized in that: The first coil terminal is still in a compressed state inside the chamber.