High-safety small isolating switch

Abstract

The invention discloses a high-safety small isolating switch which comprises an outer shell, a first wiring terminal, a second wiring terminal and a switch handle are arranged on the outer shell, the switch handle is connected with an electromagnetic tripping assembly, the first wiring terminal is electrically connected with a static contact, the electromagnetic tripping assembly is provided with a moving contact capable of being in contact with the static contact, and the second wiring terminal is electrically connected with the moving contact. A fusing assembly is further arranged in the outer shell, the moving contact is electrically connected with the fusing assembly, the fusing assembly is electrically connected with the second wiring terminal, and a control system is further included and used for receiving monitoring signals of electric appliance parts in a circuit. And the control system provides current for an electromagnetic coil of the electromagnetic tripping assembly and drives the tripping assembly to act to realize disconnection of the moving contact and the static contact. According to the invention, the disconnecting switch has fusing breaking and signal type electromagnetic tripping opening functions at the same time, and the use safety performance, practicability and flexibility of the disconnecting switch are effectively improved.

Description

Technical Field

[0001] This invention relates to safe electrical switches, and more specifically to a high-safety miniature disconnect switch. Background Technology

[0002] Miniature disconnect switches are safety control switches used in low-voltage circuits. Traditional miniature disconnect switches generally adopt an electromagnetic tripping structure. Their working principle is to use the fault current to cause the magnetic force generated by the electromagnetic coil to drive the iron core and tripping components, thereby realizing the disconnection of the switch. This method directly connects the current in the circuit to the electromagnetic coil to achieve circuit safety control. However, in actual use, some electrical equipment in the downstream power network may experience power problems. At this time, it is necessary to configure corresponding power control switches to ensure their safe power use. The traditional disconnect switch has relatively large functional limitations, which also leads to a relatively complex number of switches and configurations. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a high-safety miniature disconnecting switch for solving the above-mentioned problems.

[0004] Therefore, the present invention is implemented using the following scheme: A high-safety miniature disconnect switch includes a housing with a first terminal and a second terminal, and a switch handle connected to an electromagnetic trip assembly. The first terminal is electrically connected to a stationary contact, the electromagnetic trip assembly has a moving contact that can contact the stationary contact, and a fuse is located inside the housing. The moving contact is electrically connected to the fuse, and the fuse is electrically connected to the second terminal. The switch also includes a control system that receives monitoring signals from electrical components in the circuit. If the control system analyzes an abnormal monitoring signal, it provides current to the electromagnetic coil of the electromagnetic trip assembly, causing the trip assembly to disconnect the moving and stationary contacts.

[0005] A mounting base is provided for the fuse assembly, and a lamp board electrically connected to the fuse assembly is provided inside the mounting base.

[0006] Arc-extinguishing plates are arranged near the stationary and moving contacts.

[0007] The movable part of the electromagnetic tripping assembly is connected to one end of the transmission part, and the other end of the transmission part is connected to the moving part. The moving part is slidably disposed in the housing. A contact sensor is provided on one side of the moving part. The movement of the moving part can squeeze the contact button of the contact sensor.

[0008] The above-mentioned technical solution provides a high-safety miniature disconnecting switch. By integrating a fuse assembly into an electromagnetic tripping miniature circuit breaker, the fuse assembly is used to achieve overload and short-circuit breaking control of the disconnecting switch. Furthermore, by configuring a control system to receive monitoring signals from electrical components in the circuit, if the control system analyzes the monitoring signal as abnormal, the control system provides current to the electromagnetic coil of the electromagnetic tripping assembly and drives the tripping assembly to open the moving and stationary contacts. This realizes remote signal-based control of the electromagnetic tripping assembly, which can greatly improve the safety, flexibility, and practicality of the miniature disconnecting switch. Attached Figure Description

[0009] The present invention includes the following figures: Figure 1 This is a diagram of the external structure of the present invention; Figure 2 for Figure 1 Another perspective; Figure 3 This is a diagram of the internal structure of the present invention; Figure 4 for Figure 3 Another perspective. Detailed Implementation

[0010] As shown in the figure, this invention discloses a high-safety miniature disconnect switch, comprising a housing 3, a first terminal 4 and a second terminal 2 on the housing 3, a switch handle 1 on the housing 3, the switch handle 1 being connected to an electromagnetic tripping assembly, the first terminal 4 being electrically connected to a stationary contact 10, the electromagnetic tripping assembly having a moving contact 9 that can contact the stationary contact 10, and a fuse assembly 5 inside the housing 3, the moving contact 9 being electrically connected to the fuse assembly 5. The fuse assembly is a common structure on the market and belongs to existing technology, so its specific structure will not be described in detail. The fuse assembly 5 is electrically connected to the second terminal 2. The invention also includes a control system, which receives monitoring signals from electrical components in the circuit. If the control system analyzes an abnormal monitoring signal, it provides current to the electromagnetic coil of the electromagnetic tripping assembly, causing the tripping assembly to operate and disconnect the moving and stationary contacts. Specifically, the control system can be various types of power systems, such as a battery management system (BMS), used for real-time monitoring of battery current, voltage, temperature, and other indicators.

[0011] Furthermore, a mounting base 16 is provided for the fuse assembly 5, and a light panel 15 electrically connected to the fuse assembly 5 is provided inside the mounting base 16. With the above structure, when the fuse assembly 5 blows, the indicator light on the light panel 15 will light up so that the user can know that the fuse assembly has blown.

[0012] Furthermore, arc-extinguishing plates 7 are arranged near the stationary contact 10 and the moving contact 9. This structure allows the arc-extinguishing plates 7 to be positioned closer to the moving and stationary contacts, directly extinguishing the arc generated when the moving and stationary contacts separate, effectively improving the arc-extinguishing effect.

[0013] Furthermore, the movable part 8 of the electromagnetic trip assembly is connected to one end of the transmission part 11, and the other end of the transmission part 11 is connected to the moving part 12. The moving part 12 is slidably disposed in the housing. A contact sensor 14 is provided on one side of the moving part 12. The movement of the moving part 12 can press the contact button 13 of the contact sensor. With the above structure, when the electromagnetic trip assembly is activated to trip and open the circuit, its movable part 8 will drive the transmission part 11 to move, and drive the moving part 12 to slide in the housing. During the movement, the moving part 12 will press the contact button 13 of the contact sensor 14. At this time, pressing the contact sensor 14 will provide feedback indicating that the trip assembly has completed the trip and opening, thereby realizing feedback on the operation status of the internal trip assembly.

[0014] The working principle of this invention is as follows: Under normal power supply, the moving and stationary contacts are in the closed state, and the current is transmitted through the fuse assembly 5, the moving contact 9, and the stationary contact 10. When a short circuit or overload occurs in the power supply current, the fuse assembly 5 will heat up and melt under the action of excessive current to disconnect the circuit and ensure safe power use. When the control system detects a power problem in the electrical components, it will apply a control current to the electromagnetic coil 6 of the electromagnetic trip assembly, which will then drive the trip assembly and the moving contact 9 to act, causing the moving contact 9 to separate from the stationary contact 10 to disconnect the isolating switch and ensure safe power use.

Claims

1. A high-safety miniature disconnect switch, comprising a housing (3), wherein a first terminal (4) and a second terminal (2) are provided on the housing (3), and a switch handle (1) is provided on the housing (3), wherein the switch handle (1) is connected to an electromagnetic tripping assembly, characterized in that: The first terminal (4) is electrically connected to the stationary contact (10). The electromagnetic trip assembly is provided with a moving contact (9) that can contact the stationary contact (10). The housing (3) is also provided with a fuse assembly. The moving contact (9) is electrically connected to the fuse assembly (5). The fuse assembly (5) is electrically connected to the second terminal (2). The system also includes a control system. The control system is used to receive monitoring signals from electrical components in the circuit. If the control system analyzes that the monitoring signal is abnormal, the control system provides current to the electromagnetic coil of the electromagnetic trip assembly and drives the trip assembly to disconnect the moving and stationary contacts.

2. The high-safety miniature disconnector according to claim 1, characterized in that: A mounting base (16) is provided corresponding to the fuse assembly (5), and a lamp plate (15) electrically connected to the fuse assembly (5) is provided in the mounting base (16).

3. The high-safety miniature disconnector according to claim 1, characterized in that: Arc-extinguishing plates (7) are arranged near the stationary contact (10) and the moving contact (9).

4. A high-safety miniature disconnector according to claim 1, characterized in that: The movable part (8) of the electromagnetic tripping assembly is connected to one end of the transmission part (11), and the other end of the transmission part (11) is connected to the movable part (12). The movable part (12) is slidably disposed in the housing. A contact sensor (14) is provided on one side of the movable part (12). The movement of the movable part (12) can squeeze the contact button of the contact sensor.

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