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Electromagnetic type tripping device

A tripping device, electromagnetic technology, applied in emergency protection devices, circuits, electrical components, etc., can solve the problems of prolonged working hours, endangering the safety of nearby equipment, and insufficient volume of electromagnetic leakage switches

Pending Publication Date: 2018-07-13
SHANGHAI LIANGXIN ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing electromagnetic tripping device has the following defects: (1) The overall volume of the electromagnetic tripping device is relatively large, so that the volume of the electromagnetic leakage switch is insufficient, and the difficulty of arranging wires during the assembly process of the leakage switch increases; (2) ) During the assembly process of the electromagnetic tripping device, it is necessary to fix the permanent magnet through the riveting process, resulting in extended working hours. , there is no buffering process, which increases the impact on the pole surface during the working process and reduces the service life and reliability of the product: (4) The existing electromagnetic tripping device adopts the upper and lower buckle type for sealing, the gap is large, and it is easy to Dust enters, causing the tripping device to lose its magnetism, directly affecting the action of the leakage protection switch, seriously endangering the safety of nearby equipment, and easily causing fire; (5) The magnetic system of the existing electromagnetic tripping device has no positioning in the housing, It is easy to shake left and right, making the action characteristics inconsistent, and there is a risk of unstable output stroke and force value: (6) The relative displacement of the yoke and the pole surface of the armature is prone to relative displacement after the second reset, and the air gap between the joint surface changes, resulting in leakage tripping The value fluctuates greatly

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0040] as attached figure 1, as shown in 2 and 3, an electromagnetic tripping device, which includes a magnetic tripping mechanism 1, the magnetic tripping mechanism 1 is installed in the inner cavity of the electromagnetic box body 2, and the electromagnetic box body 2 is provided with a top Rod hole 201, the ejector rod 3 is housed in the ejector rod hole 201, one end of the ejector rod 3 extending into the inner cavity of the electromagnetic box body 2 corresponds to the magnetic tripping mechanism 1, and the ejector rod 3 can Jacked up by the magnetic tripping mechanism 1; in this embodiment, the electromagnetic box 2 includes a base 202 and an upper cover 203, and a limit hook 204 is provided on the outer surface of the electromagnetic box 2 corresponding to the push rod 3.

[0041] as attached image 3 As shown, the coil assembly 103 is installed at the front end of the magnetic circuit assembly 101 in the magnetic tripping mechanism 1, specifically, in this embodiment,...

Embodiment 2

[0048] as attached Figures 9 to 13 As shown in another embodiment of the present invention, the left auxiliary yoke 101d is arranged side by side on the left side of the rear end of the left yoke 101a, and the right side is installed side by side on the right side of the right yoke 101b rear end. Auxiliary yoke 101e, the rear side of the left auxiliary yoke 101d, left yoke 101a, magnetic isolation piece 101c, right yoke 101b and right auxiliary yoke 101e arranged side by side in sequence is penetrated by permanent magnet installation hole 101f' , the permanent magnet 102' is installed in the permanent magnet installation hole 101f'.

[0049] as attached Figure 12 As shown, the upper end surface of the permanent magnet 102' located on the left side of the magnetic isolation piece 101c is in contact with the left yoke 101a and the left auxiliary yoke 101d, and the lower end surface is in contact with the left yoke 101a and the left auxiliary yoke. The yoke 101d is separated,...

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Abstract

The invention discloses an electromagnetic type tripping device. The electromagnetic type tripping device comprises a magnetic tripping mechanism (1), and is characterized in that the magnetic tripping mechanism (1) is arranged inside the inner cavity of an electromagnetic box body (2); an ejector rod hole (201) is formed in the electromagnetic box body (2); an ejector rod (3) is arranged inside the ejector rod hole (201); the end, stretching into the inner cavity of the electromagnetic box body (2), of the ejector rod (3) corresponds to the magnetic tripping mechanism (1); and the ejector rod(3) can be jacked by the magnetic tripping mechanism (1). According to the electromagnetic type tripping device, through the improvement on the whole structure of an existing electromagnetic type tripping device, the assembling process of the electromagnetic type tripping device is simplified, the volume of the electromagnetic type tripping device is reduced, an elastic component is added onto anarmature in direct contact with a magnet yoke, and the impact on a pole face in the working process is reduced, so that actions among the components of the electromagnetic type tripping device are more stable, the reliability and stability of the electromagnetic type tripping device are improved, and the safety of the electromagnetic type tripping device is improved.

Description

technical field [0001] The invention belongs to the technical field of circuit breakers, and in particular relates to an electromagnetic tripping device. Background technique [0002] Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. Low-voltage circuit breaker, also known as automatic switch, commonly known as "air switch", also refers to low-voltage circuit breaker. It is an electrical appliance that not only has the function of manual switch, but also can automatically protect against voltage loss, undervoltage, overload, and short circuit. It can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, etc., and can automatically cut off the circuit when they have severe overload, short circuit and undervoltage faults. Its function is equivalent to a fuse switch and The combination of overheating and underheating relays, etc., and general...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/32
CPCH01H71/323
Inventor 刘时胜柯恒周娟
Owner SHANGHAI LIANGXIN ELECTRICAL