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Arc-resistant heavy-current plugging terminal and manufacturing method thereof

A plug-in terminal, anti-arc technology, applied in the manufacture, circuit, connection, etc. of the contact box/base, can solve the problems of sudden safety problems, moisture infiltration, easy generation of arcs and sparks, etc., to increase the anti-arc and fire resistance, increase adhesion and bond strength, prolong service life

Inactive Publication Date: 2017-02-22
WHIRLPOOL CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the influence of moisture and temperature, electric arcs and sparks are likely to be generated between strong electric plug-in terminals, and the generated arcs and sparks are likely to ignite the components around the terminals, causing sudden safety problems
In the prior art, a protective cover is set on the terminal, which is an additional package, and its tightness with the terminal is not good, and moisture may still seep through the gap, which will still cause safety accidents
At the same time, the additional protective cover needs to be made separately, which increases the cost

Method used

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  • Arc-resistant heavy-current plugging terminal and manufacturing method thereof
  • Arc-resistant heavy-current plugging terminal and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for manufacturing an arc-resistant strong current plug-in terminal, the method comprising the following steps:

[0024] In step S1, the connection portion between the terminal 2 and the base material 1 and the surface of the base material 1 are modified by low-temperature plasma, and the modification time is 60 seconds.

[0025] Step S2, after the modification treatment is completed, coat the RTV silica gel on the connection between the terminal 2 and the base material 1 and the surface of the base material 1. The thickness of the coated RTV silica gel is 2mm; the coating needs to be uniform and compact to avoid false coating, Bubbles and other defects.

[0026] Step S3, after the silica gel coating is completed, the strong electric plug terminal is cured at a temperature of 18°C ​​to 23°C for 24 hours.

[0027] The 90°peel strength between the RTV silicone and the root of the terminal 2 and the 90°peel strength between the RTV silicone and the substrate 1 wer...

Embodiment 2

[0029] A method for manufacturing an arc-resistant strong current plug-in terminal, the method comprising the following steps:

[0030] In step S1, the connection portion between the terminal 2 and the base material 1 and the surface of the base material 1 are modified by low-temperature plasma, and the modification time is 50 seconds.

[0031] Step S2, after the modification treatment is completed, apply RTV silica gel on the connection between terminal 2 and substrate 1 and the surface of substrate 1. The thickness of the coated RTV silica gel is 1.5 mm; the coating needs to be uniform and dense to avoid false coating , bubbles and other defects.

[0032] Step S3, after the silica gel coating is completed, the strong electric plug terminal is cured at a temperature of 18°C ​​to 23°C for 24 hours.

[0033] After the strong electric plug terminal is cured, the 90° peel strength between the RTV silicone and the root of the terminal 2 and the 90° peel strength between the RTV s...

Embodiment 3

[0035] A method for manufacturing an arc-resistant strong current plug-in terminal, the method comprising the following steps:

[0036] In step S1, the connection portion between the terminal 2 and the base material 1 and the surface of the base material 1 are modified by low-temperature plasma, and the modification time is 70 seconds.

[0037] Step S2, after the modification treatment is completed, apply RTV silica gel on the connection between terminal 2 and substrate 1 and the surface of substrate 1. The thickness of the coated RTV silica gel is 2.5mm; the coating needs to be uniform and dense to avoid false coating , bubbles and other defects.

[0038] Step S3, after the silica gel coating is completed, the strong electric plug terminal is cured at a temperature of 18°C ​​to 23°C for 24 hours.

[0039] The 90°peel strength between the RTV silicone and the root of the terminal 2 and the 90°peel strength between the RTV silicone and the substrate 1 were measured with a peel...

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Abstract

The invention relates to an arc-resistant heavy-current plugging terminal. The terminal comprises a substrate, terminals arranged on the substrate and a protective structure arranged on the terminals, the protective structure includes an insulating layer positioned in the part where the terminals are connected with the substrate, and completely covers the surface, where the terminals are positioned, of the substrate, the thickness of the insulating layer ranges from 1.5 to 2.5mm, and the insulating layer is made of silica gel. The substrate of the heavy-current plugging terminal undergoes low-temperature plasma processing and is then coated with the RTV silica gel which serves as the insulating layer, the adherence and bonding intensity between the insulating layer and the substrate of the terminal are enhanced, the service life of the insulating layer and the heavy-current plugging terminal is prolonged, the surface of the substrate of the heavy-current plugging terminal is covered with the RTV silica gel completely, heavy-current plugging terminals are prevented from generating continuous arcs due to connection with each other, a few of generated arc does not ignite the substrate, an electrical part itself and peripheral parts, and the arc resistant and fireproof performances of the heavy-current plugging terminals are enhanced.

Description

technical field [0001] The invention relates to the technical field of high-voltage terminals for electric devices, in particular to an anti-arc high-voltage plug terminal. Background technique [0002] In daily life, the strong current plug terminals of electrical devices conduct current to electrical appliances. Due to the different environments in which electrical appliances are used, the electrical components of electrical appliances need to work normally in humid, high temperature and high pressure environments. Discharge, fire and other accidents are prone to occur under the environment. Due to the influence of moisture and temperature, arcs and sparks are likely to be generated between strong electric plug terminals, and the generated arcs and sparks are likely to ignite the components around the terminals, causing sudden safety problems. In the prior art, a protective cover is set on the terminal, which is an additional package, and its tightness with the terminal...

Claims

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Application Information

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IPC IPC(8): H01R13/527H01R13/53H01R43/18
CPCH01R13/527H01R13/53H01R43/18
Inventor 葛建汤志鸣
Owner WHIRLPOOL CHINA
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