Cable Connector Sealing Structure for Waterproof Electronics
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Solution Overview
Problem
Existing electronic devices face poor waterproof performance at cable connection points due to inadequate bonding between cable protective layers and device housings, leading to water ingress and damage.
Innovation Solution
A waterproof electronic device design that replaces direct bonding between cable protective layers and housings with a connector that covers the cable and forms sealed connections with the housing, enhancing bonding reliability and incorporating additional protective sleeves to extend the water ingress path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct bonding between cable protective layers and housings is used, then the structure is simple, but the waterproof performance is poor
Solution Approach 1:
A connector is introduced as an intermediary component between the cable assembly and the housing. The connector includes a mounting portion inserted through the mounting hole, and is sealed with the housing through sealant. This intermediary structure replaces the direct bonding approach, providing reliable waterproof sealing while maintaining reasonable structural complexity.
Solution Approach 2:
The connector is partially covered by the housing and partially covered by the second protective sleeve, creating a nested structure. The second protective sleeve extends to cover the connector, and the connector itself covers the cable. This nested arrangement enhances waterproof performance by creating multiple layers of protection and sealing interfaces.
2Reliability
If connector with protective sleeves is used, then the waterproof performance is improved, but the manufacturing complexity increases
Solution Approach 1:
The cable assembly is segmented into distinct components: the connector, the cable, and the second protective sleeve. The housing also has distinct components: the housing, mounting hole, and first protective sleeve. This segmentation allows each component to be manufactured separately and then assembled, with sealing interfaces established at the junctions. The modular approach improves waterproof performance while managing manufacturing complexity through standardized interfaces.
3Reliability
If multiple sealing interfaces are created, then the water ingress resistance is increased, but the assembly complexity increases
Solution Approach 1:
The connector serves as an intermediary that creates multiple sealing interfaces: between the connector and housing, between the second protective sleeve and connector, and between the second protective sleeve and housing. These multiple sealing interfaces significantly increase water ingress resistance. The intermediary structure organizes these interfaces in a systematic way, managing assembly complexity through clear interface definitions.
Solution Approach 2:
The nested arrangement of the second protective sleeve covering the connector, and the connector covering the cable, creates multiple concentric sealing interfaces. This nested structure increases water ingress resistance by requiring water to penetrate through multiple sealed layers. The nesting approach manages assembly complexity by providing a hierarchical structure with clear assembly sequences.
Data Source
AI summary
A waterproof electronic device is provided, including a main body and a cable assembly. The main body includes a housing, an electronic component, and a first protective sleeve. The housing includes a mounting hole, and the first protective sleeve at least partially covers the outer surface of the housing. The cable assembly includes a connector, a cable, and a second protective sleeve. One end of the connector is provided with a mounting portion, the mounting portion is inserted through the mounting hole, the connector is provided with a connection hole, the cable passes through the connection hole and connects with the electronic component, and the second protective sleeve at least partially covers the outer surface of the housing to abut against the first protective sleeve. Connections are sealed with sealant to enhance waterproof performance.