A suction plate and yoke structure for a magnetic system

Abstract

A kind of suction plate and yoke structure for magnetic system, including suction plate body, yoke element and the suction plate tail connected to suction plate body, the suction plate tail is circular arc, the reinforcing rib of fixed connection on the suction plate tail is provided in the suction plate tail, the reinforcing rib both ends are connected to suction plate tail and suction plate body, the suction plate tail, reinforcing rib and suction plate body are integrally formed, the cross-sectional shape of the yoke element is U-shaped.

Description

Technical Field

[0001] This utility model relates to the technical field of circuit breaker components, and in particular to a suction plate and magnetic yoke structure for a magnetic system. Background Technology

[0002] The core function of the magnetic system in a circuit breaker is short-circuit protection. It rapidly disconnects the faulty circuit using electromagnetic force. Its working principle is as follows: if the main circuit is short-circuited, the current surges, the magnetic yoke generates a magnetic field, and the suction plate, under pressure, overcomes the counterforce spring and engages with the yoke. During this process, the latch is activated, disengaging from the trip latch, thus tripping the circuit breaker and disconnecting the main circuit, thereby protecting the load equipment. However, existing suction plates have the following problems: First, because this suction plate system lacks coil windings, the magnetic attraction is often unstable, leading to large instantaneous fluctuations in the magnetic flux density, resulting in a low production yield. The problems are as follows: First, the suction plate is a stamped iron part with a rounded tail, which is prone to deformation during stamping and electroplating, leading to large fluctuations in the instantaneous multiple. Second, there is a certain angle between the contact edge of the existing magnetic yoke and suction plate and the adjacent edge on the magnetic yoke. This may increase the travel distance of the suction plate during contact with the magnetic yoke, thereby increasing the tripping time and affecting the response speed of the circuit breaker. Third, holes need to be drilled on the side of the magnetic yoke for installation on the circuit breaker. However, the drilling process may cause slight deformation of the magnetic yoke, thus affecting its contact effect with the suction plate. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a suction plate and magnetic yoke structure for a magnetic system that improves the stability and reliability of the magnetic system and shortens the tripping time of the circuit breaker.

[0004] The technical solution of this utility model is as follows: a suction plate and magnetic yoke structure for a magnetic system, including a suction plate body, a magnetic yoke element, and a suction plate tail connected to the suction plate body. The suction plate tail is arc-shaped and has a reinforcing rib fixedly connected to it. The two ends of the reinforcing rib are respectively connected to the suction plate tail and the suction plate body. The suction plate tail, the reinforcing rib, and the suction plate body are integrally formed. The cross-sectional shape of the magnetic yoke element is U-shaped.

[0005] By adopting the above technical solution, since the suction plate tail is provided with a reinforcing rib fixedly connected to the suction plate tail, and the suction plate tail, reinforcing rib and suction plate body are integrally formed, the deformation of the suction plate tail during stamping and electroplating can be avoided, reducing the stability and reliability of the magnetic system when the main circuit is short-circuited. Its working principle is that when the main circuit is broken, the current surges, the magnetic yoke generates a magnetic field, the suction plate body is subjected to force to overcome the reaction force of the spring and is attracted together with the magnetic yoke. In this process, the suction plate tail triggers the latch to act, causing the latch to disengage from the trip latch in the circuit breaker, thereby driving the circuit breaker to trip, and the main circuit is disconnected to complete the function of protecting the load equipment.

[0006] A further feature of this invention is that a C-angle is provided at the connection between the tail of the suction plate and the suction plate body.

[0007] By adopting the above technical solution, since the connection between the suction plate tail and the suction plate body is provided with a C-angle, the structural stability between the suction plate tail and the suction plate body can be further improved, thereby avoiding deformation of the suction plate during processing and use, and playing a role in improving the stability of the magnetic system.

[0008] A further feature of this invention is that the magnetic yoke element has mounting holes and balancing holes on both sides. The mounting holes are located at the ends of the magnetic yoke element, and the mounting holes and balancing holes have the same diameter. The two mounting holes and the two balancing holes are symmetrically arranged with the central axis of the magnetic yoke element as the axis.

[0009] By adopting the above technical solution, since both sides of the magnetic yoke element are provided with mounting holes and balancing holes, and the mounting holes and balancing holes have the same diameter, and the two mounting holes and two balancing holes are symmetrically arranged with the central axis of the magnetic yoke element as the axis, the balancing holes can play a balancing role on the sides of the magnetic yoke element, avoiding the phenomenon of slight deformation of the magnetic yoke element caused by the opening, thereby improving the contact effect between the magnetic yoke element and the suction plate body, and thus improving the stability and reliability of the magnetic system.

[0010] A further feature of this invention is that the magnetic yoke element includes a first side and a second side, the first side being able to contact the suction plate body, and the included angle between the first side and the second side being less than or equal to 94 degrees and greater than 90 degrees.

[0011] By adopting the above technical solution, since the included angle between the first side and the second side is less than or equal to 94 degrees and greater than 90 degrees, by minimizing the included angle between the first side and the second side, the movement of the suction plate body is reduced, thereby shortening the tripping time required by the circuit breaker and improving the protection capability of the load. Attached Figure Description

[0012] Appendix Figure 1 This is a schematic diagram of a suction plate and magnetic yoke structure for a magnetic system according to a specific embodiment of the present invention.

[0013] Appendix Figure 2 This is a schematic diagram of the suction plate body and the suction plate tail in a suction plate and yoke structure for a magnetic system according to a specific embodiment of the present invention.

[0014] Appendix Figure 3 This is a schematic diagram of the magnetic yoke element in a magnetic system suction plate and magnetic yoke structure according to a specific embodiment of the present invention.

[0015] 1-Suction plate body, 2-Magnetic yoke element, 3-Suction plate tail, 4-Reinforcing rib, 5-C-corner, 6-Mounting hole, 7-Balance hole, 8-First side, 9-Second side. Detailed Implementation

[0016] like Figure 1-3 As shown, a suction plate and yoke structure for a magnetic system includes a suction plate body 1, a yoke element 2, and a suction plate tail 3 connected to the suction plate body 1. The suction plate tail 3 is arc-shaped, and a reinforcing rib 4 is fixedly connected to the suction plate tail 3. The two ends of the reinforcing rib 4 are respectively connected to the suction plate tail 3 and the suction plate body 1. The suction plate tail 3, the reinforcing rib 4, and the suction plate body 1 are integrally formed. The cross-sectional shape of the yoke element 2 is U-shaped.

[0017] Because the suction plate tail 3 is provided with a reinforcing rib 4 fixedly connected to the suction plate tail 3, and the suction plate tail 3, the reinforcing rib 4 and the suction plate body 1 are integrally formed, the suction plate tail 3 can be prevented from deforming during stamping and electroplating, reducing the stability and reliability of the magnetic system when the main circuit is short-circuited. Its working principle is that when the main circuit is broken, the current surges, the magnetic yoke generates a magnetic field, the suction plate body 1 is subjected to force to overcome the reaction force of the spring and is attracted together with the magnetic yoke. During this process, the suction plate tail 3 touches the latch to activate, causing the latch to disengage from the trip latch in the circuit breaker, thereby causing the circuit breaker to trip, and the main circuit is disconnected to complete the function of protecting the load equipment.

[0018] The suction plate tail 3 is provided with a C-angle 5 at the connection between the suction plate body 1 and the suction plate tail 3.

[0019] Since the connection between the suction plate tail 3 and the suction plate body 1 is provided with a C-angle 5, the structural stability between the suction plate tail 3 and the suction plate body 1 can be further improved, thereby avoiding deformation of the suction plate during processing and use, and playing a role in improving the stability of the magnetic system.

[0020] The magnetic yoke element 2 has mounting holes 6 and balancing holes 7 on both sides. The mounting holes 6 are located at the ends of the magnetic yoke element 2. The mounting holes 6 and balancing holes 7 have the same diameter. The two mounting holes 6 and the two balancing holes 7 are symmetrically arranged with the central axis of the magnetic yoke element 2 as the axis.

[0021] Since mounting holes 6 and balancing holes 7 are provided on both sides of the magnetic yoke element 2, and the mounting holes 6 and balancing holes 7 have the same diameter, and the two mounting holes 6 and the two balancing holes 7 are symmetrically arranged with the central axis of the magnetic yoke element 2 as the axis, the balancing holes 7 can balance the sides of the magnetic yoke element 2, avoid the phenomenon of slight deformation of the magnetic yoke element 2 due to the opening, thereby improving the contact effect between the magnetic yoke element 2 and the suction plate body 1, and thus improving the stability and reliability of the magnetic system.

[0022] The magnetic yoke element 2 includes a first side 8 and a second side 9. The first side 8 can contact the suction plate body 1. The included angle between the first side 8 and the second side 9 is less than or equal to 94 degrees and greater than 90 degrees.

[0023] Since the included angle between the first side 8 and the second side 9 is less than or equal to 94 degrees and greater than 90 degrees, by minimizing the included angle between the first side 8 and the second side 9 as much as possible, the movement of the suction plate body 1 is reduced, thereby shortening the tripping time required by the circuit breaker and improving the protection capability of the load.

Claims

1. A suction plate and yoke structure for a magnetic system, characterized in that: It includes a suction plate body, a magnetic yoke element, and a suction plate tail connected to the suction plate body. The suction plate tail is arc-shaped and has a reinforcing rib fixedly connected to it. The two ends of the reinforcing rib are respectively connected to the suction plate tail and the suction plate body. The suction plate tail, the reinforcing rib, and the suction plate body are integrally formed. The cross-sectional shape of the magnetic yoke element is U-shaped.

2. The suction plate and yoke structure for a magnetic system according to claim 1, characterized in that: The suction plate tail is provided with a C-angle at the connection between the suction plate tail and the suction plate body.

3. The suction plate and yoke structure for a magnetic system according to claim 1, characterized in that: The magnetic yoke element has mounting holes and balancing holes on both sides. The mounting holes are located at the ends of the magnetic yoke element. The mounting holes and balancing holes have the same diameter. The two mounting holes and two balancing holes are symmetrically arranged with the central axis of the magnetic yoke element as the axis.

4. The suction plate and yoke structure for a magnetic system according to claim 2, characterized in that: The magnetic yoke element includes a first side and a second side. The first side can contact the suction plate body. The included angle between the first side and the second side is less than or equal to 94 degrees and greater than 90 degrees.

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