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Overload protection device for electricity meter

An overload protection and electricity meter technology, applied in measuring devices, measuring electrical variables, instruments, etc., can solve the problems of difficult heat dissipation, poor dustproof performance of the shell, affecting the protection of electricity meters, etc., and achieve the effect of preventing accumulation

Inactive Publication Date: 2021-11-26
珠海市华能智造实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the technical solution provided by this patent is not strong for the dustproof performance of the housing. During the movement of the straight shaft, the external dust is easily brought into the housing through the movable port. If the dust is not collected and cleaned in time, the dust will accumulate. It is not easy to dissipate heat inside the housing, which will affect the protection of the device for the meter

Method used

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  • Overload protection device for electricity meter
  • Overload protection device for electricity meter
  • Overload protection device for electricity meter

Examples

Experimental program
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Embodiment 1

[0045] see Figure 1-3 In an embodiment of the present invention, an overload protection device for an electric meter includes a housing 1, a sealing cover 101, a straight shaft 2, a lever 201, a permanent magnet 3, a first electrode piece 301, a second electrode piece 302, Conductive coil 303 and chute 4,

[0046] The dust-proof assembly 5, the internal position of the longitudinal side inner wall of the housing 1 is arranged vertically in an up-and-down vertical direction, and several dust-proof assemblies 5 that can prevent dust from accumulating are embedded.

[0047] Each group of dustproof components 5 includes a dust collecting case 501, a deformable component 502 that can deform to promote dust prevention after dust enters, a movable component 503 that can move to promote dust prevention after dust enters, and can prevent collection. Anti-spill assembly 504 for dust spillage.

[0048] In the embodiment of the present invention, the dust collecting case 501, each dust...

Embodiment 2

[0052] see Figure 3-Figure 7 Compared with Embodiment 1, this embodiment of the present invention differs in that: deformation components 502 , each set of deformation components 502 includes a lower air bag 5021 and a limiting plate 5022 .

[0053] In the embodiment of the present invention, the lower airbag 5021 is embedded with the lower airbag 5021 between the inner bottom of each dust collecting case 501 and the right end. The outer surfaces of the left side and the bottom side of each are attached to the inner wall of each dust collecting case 501;

[0054] Here, the lower airbag 5021 and its appearance are left and right arc-shaped, which is designed to use the principle of negative pressure to press the lower airbag 5021 to deform after the dust falls into the dust collecting case 501, so as to trigger the subsequent activities of the movable components 503;

[0055] Limiting plate 5022, the position between the inner right end of each dust collecting case 501 and th...

Embodiment 3

[0067] see image 3 , Figure 8-9 Compared with Embodiment 1, the difference between this embodiment of the present invention lies in: anti-overflow components 504 , and each set of anti-overflow components 504 includes a fixing plate 5041 and an upper airbag 5042 .

[0068] In the embodiment of the present invention, the fixed plate 5041 is fixedly installed from the inner right end of each dust collection case 501 to the top position, and the appearance of each fixed plate 5041 is in the shape of an inverted letter F in a longitudinal section. , between the right outer wall of each fixing plate 5041 and the inner wall of each dust collecting case 501, a first cavity and a second cavity are sequentially opened from bottom to top, and an outlet is opened on the top of the left end of the second cavity, The material of each fixing plate 5041 is copper;

[0069]On the upper air bag 5042, an upper air bag 5042 is embedded between the right outer wall of each fixing plate 5041 d...

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Abstract

The invention provides an overload protection device for electricity meter, the overload protection device comprises a shell, a sealing cover, a straight shaft, a shifting rod, a permanent magnet, a first electrode plate, a second electrode plate, a conductive coil, a sliding groove and dustproof assemblies, and a plurality of dustproof assemblies capable of preventing dust accumulation are embedded in the inner wall of the longitudinal side of the shell in the up-down vertical direction in an equally adjacent mode, each dustproof assembly comprises a dust collection shell, a deformation assembly capable of deforming after dust enters to promote dust prevention, a movable assembly capable of moving after dust enters to promote dust prevention and an anti-overflow assembly capable of preventing the collected dust from overflowing. According to the overload protection device for the electricity meter, the dustproof performance of the shell can be enhanced, even if external dust is brought into the shell through the movable opening in the moving process of the straight shaft, the dust can be collected and cleaned in time, the situation that the dust is accumulated in the shell and is not prone to heat dissipation is prevented, and the normal protection effect of the device on the electricity meter is guaranteed.

Description

technical field [0001] The invention relates to the field of overload protection devices, more specifically, to an overload protection device for electric meters. Background technique [0002] The existing power overload protection measures are usually implemented by relays, but the internal components of the relay have complex structures and high production costs. [0003] In view of the above problems, regarding the technical problems such as the complex structure of the existing overload protection device, after a large number of searches, we found an electric meter with the patent number CN202110269820. The inner wall of the rear end of the body is provided with a first chute, the first slider is slidably connected to the first slider, the front end of the first slider is fixed with a second mounting plate, the inner side of the second mounting plate is fixed with a second electrode sheet, and the second The top of the inner wall of the groove is fixed with a second spr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R11/02
Inventor 武建华高静
Owner 珠海市华能智造实业有限公司
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