Circuit device and circuit-board protecting box thereof

A technology of circuit devices and circuit boards, which is applied in the field of protective boxes, can solve the problems of high repair rate, low yield rate, and high cost of consumables, and achieve the effect of high repair rate, low qualified products, and improved qualified product rate

Active Publication Date: 2013-05-01
TIANDI CHANGZHOU AUTOMATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main defect of the conformal paint is that the coating process cannot guarantee its long-term reliability; and the whole product of the potting box obtained by injection molding processing has a low yield and a high repair rate, and due to the injection molding process Due to the limitations of the process, the wall thickness of the potting box is more than 2mm, and the cost of consumables is high

Method used

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  • Circuit device and circuit-board protecting box thereof
  • Circuit device and circuit-board protecting box thereof
  • Circuit device and circuit-board protecting box thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0036] See image 3 and Figure 4 , The circuit board protection box of this embodiment includes a box body 1 . The box body 1 is in the shape of a cuboid shell with an opening upward, and includes a bottom plate 11 and a side plate 12 connected to the peripheral edge of the bottom plate 11 from above. Each of the four corners of the bottom plate 11 is provided with an upwardly protruding mounting seat 13 . The mounting seat 13 is in the shape of a ring-shaped boss. The mounting seat 13 includes a support portion 13-1 located below and a mounting portion 13-2 with a diameter smaller than the support portion 13-1 above. Hole 13-3, the mounting hole 13-3 is a stepped hole with a small upper part and a larger lower part, and the mounting hole 13-3 runs through the entire mounting seat 13 and the bottom plate 11; The ends are flush. The plate thickness of the bottom plate 11 and the side plate 12 of the box body 1 is less than 1mm. The box body 1 is made of transparent plasti...

Embodiment 2）

[0038] See Figure 1 to Figure 4 , The circuit device of this embodiment includes a circuit board 2, a potting compound 3 and the circuit board protective box obtained in Embodiment 1.

[0039] still see figure 1 and figure 2 , the board body of the circuit board 2 is welded with various electronic components 21 such as diodes, triodes, capacitors, etc., and the size of the board body of the circuit board 2 corresponds to the size of the bottom plate 11 of the box body 1, and the board of the circuit board 2 The position corresponding to the bottom plate 11 of the box body 1 of the circuit board protection box on the 4 corners of the body is provided with a through hole 22 that penetrates up and down. -2 corresponds to the diameter, specifically, the diameter of the through hole 22 is 0.1 to 0.5 mm larger than the diameter of the mounting portion 13-2 of the mounting seat 13 of the box body 1 .

[0040] still see figure 1 and figure 2 , the circuit board 2 is set on the...

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PUM

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Abstract

The invention relates to a circuit device and a circuit-board protecting box thereof, wherein the circuit device comprises the circuit-board protecting box, a circuit board, casting glue and a fastener; and the circuit-board protecting box comprises a box body. The box body is in the shape of a shell with an upward opening and comprises a bottom board and lateral boards which are connected to the circumferential edge of the bottom board from the top. Installing seats are arranged on the bottom board. The box body is made of transparent plastics. The size of a board body of the circuit board corresponds to that of the bottom board of the box body, and corresponding through holes are arranged in the board body of the circuit board. The circuit board is sleeved on one corresponding installing seat of the box body through the through hole, a bottom glue-pouring space is formed between the lower end surface of the circuit board and the bottom board of the box body, and a gap respectively exists between each part on the circumferential edge of the circuit board and each lateral board of the box body. The whole glue-pouring space is filled with the casting glue, and the circuit board and electronic devices and components welded on the circuit board are covered with the casting glue. Installing holes are arranged in the installing seat of the box body. The protecting effect of the circuit-board protecting box for the circuit board is better.

Description

technical field [0001] The invention relates to a protection device for a circuit board, in particular to a circuit device and a protective box for a circuit board which can be filled with glue. Background technique [0002] With the development of modern society, all kinds of electrical equipment are widely used in different living and industrial environments, and higher and higher requirements are put forward for the long-term safe and reliable operation of electrical equipment. As important equipment in electrical equipment, circuit boards (also known as PCB boards, circuit boards, aluminum substrates, printed circuit boards, etc.) are more important to protect them in various environments such as indoor or outdoor, dry or humid. , Under realistic conditions, such as chemical, vibration, high dust, salt spray, humidity and high temperature environments, the circuit board may have corrosion, softening, deformation, mildew and other problems, resulting in circuit board fail...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K5/00H05K5/06
Inventor 李岩霍振龙徐炜王树强李昱辰金业勇于锦涛
Owner TIANDI CHANGZHOU AUTOMATION
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