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Printed circuit board, control device and application thereof in field of high protection control devices

A technology for printed circuit boards and control devices, which is applied to printed circuit components, printed circuits, printed circuits, etc., can solve the problems affecting the protection reliability of control devices and the existence of voids in filling materials, so as to improve the protection reliability and improve the filling efficiency. rate, the effect of improving liquidity

Pending Publication Date: 2018-11-27
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a printed circuit board, a control device and its application in the field of high-protection control devices, so as to solve the problem that there is a void in the filling material after the existing printed circuit board is filled with glue, thereby affecting the control device. The problem of protection reliability

Method used

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  • Printed circuit board, control device and application thereof in field of high protection control devices
  • Printed circuit board, control device and application thereof in field of high protection control devices
  • Printed circuit board, control device and application thereof in field of high protection control devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A printed circuit board applied to an electrical box of a washing machine. The size of the printed circuit board is: length×width=40cm×40cm. On the above-mentioned printed circuit board, the first sub-exhaust structure and the second sub-exhaust junction are exhaust structures composed of a circular exhaust hole and three rectangular exhaust holes (such as figure 1 shown), the quantity is 10.

[0039] After the glue is filled, there is no void in the filling material of the printed circuit board, that is, the filling rate of the glue is 100%.

Embodiment 2

[0041] The difference from Embodiment 1 is: on the printed circuit board, the first sub-exhaust structure is a diamond-shaped air vent, the second sub-exhaust structure is a rectangular air vent, and the first sub-exhaust structure and the second sub-exhaust The arrangement directions of the structures are perpendicular to each other (such as figure 2 shown).

[0042]After glue filling, there is no void in the filling material of the printed circuit board, that is, the filling rate of the glue is 91%.

Embodiment 3

[0044] The difference from Embodiment 1 is: on the printed circuit board, the first sub-exhaust structure is an oval vent hole, the second sub-exhaust structure is a rectangular vent hole, and the first sub-exhaust structure and the second sub-row The arrangement directions of gas structures are perpendicular to each other (such as image 3 shown).

[0045] After the glue is filled, there is no void in the filling material of the printed circuit board, that is, the filling rate of the glue is 95%.

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PUM

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Abstract

The invention provides a printed circuit board, a control device and application thereof in the field of high protection control devices. The control device comprises the printed circuit board, wherein the surface of the printed circuit board is provided with an air exhaust structure. The control device has the advantages that because the surface of the printed circuit board is provided with the air exhaust structure, the air in the glue filling process is quickly exhausted by the air exhaust structure, the fluidity of the flue on the surface of the printed circuit board is improved, and the filling rate of the glue on the printed circuit board is improved; the protection reliability of the control device is favorably improved.

Description

technical field [0001] The invention relates to the field of high-protection control devices, in particular to a printed circuit board, a control device and their application in the field of high-protection control devices. Background technique [0002] Controllers for washing machines and bus air-conditioning applications with high protection requirements include electrical boxes and printed circuit boards. In the production process of the controller, it is necessary to use the glue filling process to seal the inside of the printed circuit board and the electrical box, so as to achieve the purpose of high anti-corrosion, high anti-vibration, and high anti-shock protection. [0003] After the printed circuit board and the electrical box are assembled, a closed space is formed. During the glue filling process, when the adhesive is filled on the surface of the printed circuit board, the air cannot be effectively discharged, and air pressure is formed inside the electrical box...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/02H05K5/06
CPCH05K1/02H05K5/064H05K2201/09854
Inventor 王强邓丽芳闫红庆陈海吴振康
Owner GREE ELECTRIC APPLIANCES INC