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Electronic control unit and manufacturing method thereof

A technology of electronic control unit and electronic circuit, which is applied in the direction of printed circuit manufacturing, electrical components, and structural parts of electrical equipment, and can solve the problems of increasing manufacturing costs

Active Publication Date: 2018-10-12
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, since the elastic member needs to be formed to fit the size of the metal mold, the manufacturing cost will be increased

Method used

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  • Electronic control unit and manufacturing method thereof
  • Electronic control unit and manufacturing method thereof
  • Electronic control unit and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach ）

[0034] will refer to Figure 1 to Figure 16 The electronic control unit 1 according to the first embodiment is described. Such as Figure 1 to Figure 4 As shown, the electronic control unit 1 of the present embodiment is an airbag ECU for a vehicle. Such as figure 1 and figure 2 As shown, the electronic control unit 1 includes a circuit board 2 and a resin sealing member 3 covering the circuit board 2 . The electronic control unit 1 is used by being fastened to a fastener object 4 made of metal.

[0035] The circuit board 2 is a plate-shaped member including a substrate member 20 and an electronic circuit pattern 23 formed on a front surface 22 of the substrate member 20 . For example, the circuit board 2 is a printed wiring board. The electronic circuit pattern 23 is a wiring formed in the shape of a predetermined pattern and made of copper. exist Figure 1 to Figure 4 In , the specific shape of the electronic circuit pattern 23 is omitted, but actually the electroni...

no. 2 approach ）

[0064] This embodiment is an example in which an electronic control unit is made by changing the shape of the wall pattern in the first embodiment. In the first embodiment described above, the wall pattern 24 includes two concentric annular walls 241, 242, but in this embodiment, as Figure 17 As shown, a wall pattern 27 (bank pattern) comprising a single annular wall is formed. Although a top view of the wall pattern 27 is omitted, the wall pattern 27 of the present embodiment has a single ring pattern when the formation surface of the wall pattern 27 in the circuit board 2 is viewed from above. In the present embodiment, the electronic control unit is fabricated as in the first embodiment except for the point that the shape of the wall pattern 27 is changed as described above.

[0065] The electronic control unit and its manufacturing method in the present embodiment produce effects similar to those of the first embodiment. In this embodiment, the same symbols as those in ...

no. 3 approach ）

[0067] This embodiment is an example in which an electronic control unit is made by changing the shape of the wall pattern in the first embodiment. In the first embodiment described above, the wall pattern 24 includes two concentric annular walls 241, 242, but in this embodiment, as Figure 18 As shown, the wall pattern 28 (bank pattern) comprises three walls 281 , 282 , 283 having annular shapes concentric with each other. Although a top view of the wall pattern 28 is omitted, the wall pattern 28 of the present embodiment has three concentric annular patterns when the formation surface of the wall pattern 28 in the circuit board 2 is viewed from above. In the present embodiment, the electronic control unit is fabricated as in the first embodiment except for the point that the shape of the wall pattern 28 is changed as described above.

[0068] In the present embodiment, the wall pattern 28 is formed to have a larger number of concentric annular walls than in the first embodi...

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PUM

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Abstract

The invention discloses an electronic control unit and a manufacturing method thereof. In the manufacturing method for the electronic control unit, a circuit board (2) is manufactured through forming an electronic circuit pattern (23) on a substrate component (20) and forming wall patterns (24,27,28) which surround a planning forming area (211) of a fastener hole (210) on a surface (22). Besides, after the circuit board (2) is manufactured, the fastener hole (210) is formed in the planning forming area (211). Furthermore, after the fastener hole (210) is formed, a resin sealing component (3) is molded through loading a resin material (30) in a chamber (50) of a metal mold (5) and hardening the resin material (30) in the chamber (50) on condition that contact between a metal mold (5) and the wall patterns (24,27,28) is kept.

Description

technical field [0001] The invention relates to an electronic control unit comprising a fixed part to be attached to a fastener object and a method for manufacturing an electronic control unit. Background technique [0002] Electronic control units including circuit boards provided with electronic circuits are used in various technical fields. For example, an engine control unit (ECU) that detects the behavior of the vehicle and performs various controls based on the detection result is mounted on the vehicle as an electronic control unit. For example, an electronic control unit for a vehicle may be an airbag ECU. [0003] Electronic control units may be required to be waterproof. For example, an electronic control unit for a vehicle has a high possibility of being exposed to water due to dripping water from an air conditioner or spray water in vehicle washing, so that a circuit board provided with an electronic circuit may be required to be watertight. For example, the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K7/00H05K1/02H05K3/00
Inventor 吉田明和爱知后将
Owner DENSO CORP