Vehicle Electronic Control Apparatus Sealing Structure
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Solution Overview
Problem
Existing sealing structures in electronic control apparatuses for vehicles do not adequately secure a sufficient sealing area between the cover and base, leading to compromised sealing performance and vulnerability to external moisture and foreign substances.
Innovation Solution
The electronic control apparatus features a sealing structure with a protrusion at the edge of the cover and a projection at the edge of the base, forming a predetermined space for a sealing member, which is bonded at three points to enhance sealing efficacy, and optionally inclined to further secure the seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing member is applied on binding parts between a groove or projection at a connector side and a projection or groove of a cover and base, then the sealing structure is formed, but the sealing area is not sufficiently secured and sealing performance deteriorates
Solution Approach 1:
The invention transitions from a point-based sealing approach (at binding parts) to a line-based sealing approach (along the entire contact surface between cover and base). The sealing member is positioned in a groove that extends along the contact interface, creating a continuous sealing line rather than discrete sealing points, thereby significantly increasing the effective sealing area.
Solution Approach 2:
The sealing structure is segmented into multiple components: a groove formed at the contact surface between cover and base, and a sealing member inserted into this groove. This segmentation allows the sealing function to be distributed along the entire contact interface rather than concentrated at single binding parts, ensuring comprehensive coverage and sufficient sealing area.
2Object-affected harmful factors
If the cover and base are assembled together with the connector forming a sealing structure, then the PCB is protected, but the sealing area is insufficient and sealing performance deteriorates
Solution Approach 1:
The groove for receiving the sealing member is pre-formed at the contact surface between the cover and base before assembly. This preliminary preparation ensures that when the sealing member is installed, it immediately creates an effective barrier along the entire contact interface, providing comprehensive protection against moisture and foreign substances from the outset.
Solution Approach 2:
The sealing member acts as an intermediary element positioned between the cover and base at their contact surface. This intermediary component fills the groove and creates a continuous barrier that prevents harmful factors from penetrating through the assembly interface, thereby protecting the PCB and internal components effectively.
Data Source
AI summary
The present disclosure relates to an electronic control apparatus for a vehicle, and the electronic control apparatus of the present disclosure includes: an electronic control element which includes a printed circuit board (PCB) and electronic components installed on a surface of the PCB; a cover and a base which accommodate the electronic control element; and a connector which is coupled to the electronic control element, wherein a front end portion having a protrusion is formed at an edge of the cover so that the PCB is inserted and mounted between the protrusion of the cover and an edge of the base, a projection portion is formed at a rear end portion of the edge of the base where the cover and the base come into contact with each other, and the cover and the projection portion of the base come into contact with each other so as to form a predetermined space between the front end portion and the rear end portion so that a sealing member is inserted into the predetermined space.