Waterproof Battery Case with Double Injection Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Portable electronic devices with removable batteries face challenges in achieving advanced waterproofing due to the susceptibility of their plugs and jacks to liquid intrusion, leading to complex and costly manufacturing processes.
Innovation Solution
A case for protecting batteries and electronic devices featuring a waterproof element with a circumferential raised portion and basal portion, molded simultaneously with the case using a double injection process, providing a resilient seal without increasing production complexity or costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If plugs and jacks are added for removable batteries, then ease of use is improved, but waterproofing capability deteriorates due to liquid intrusion susceptibility
Solution Approach 1:
The waterproof element is nested within the case structure itself, with the circumferential raised portion formed as an integral part of the case wall. This nesting eliminates separate waterproof components while maintaining the sealing function, allowing removable batteries to be used without compromising waterproofing.
Solution Approach 2:
The waterproof element acts as a flexible sealing component that deforms during battery insertion and removal. The resilient material allows the element to flex as the battery plug engages with the jack, then returns to its original position to maintain the waterproof seal, solving the contradiction between ease of operation and waterproofing capability.
2Reliability
If additional waterproof structures are added to plugs and jacks, then waterproofing capability is improved, but device complexity and manufacturing costs increase
Solution Approach 1:
The invention merges the waterproof sealing function with the case structure by forming the waterproof element as an integral part of the case wall through double injection molding. This consolidation eliminates separate waterproof components and assembly steps, reducing device complexity while maintaining advanced waterproofing capability.
Solution Approach 2:
The case structure serves multiple functions: it provides mechanical protection, structural support, and waterproof sealing. The circumferential raised portion of the waterproof element simultaneously forms the sealing barrier and guides battery insertion, eliminating the need for separate waterproof structures and simplifying the overall design.
3Reliability
If separate waterproof components are added, then waterproofing capability is improved, but manufacturing costs and labor increase
Solution Approach 1:
The waterproof element is merged with the case in a single double injection molding process. The first injection forms the case base structure, and the second injection forms the waterproof element with the circumferential raised portion. This integrated manufacturing eliminates separate production and assembly steps for waterproof components, reducing labor costs and material waste while maintaining advanced waterproofing capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution simplifies manufacturing, reduces labor and material costs, and enables easy mounting and demounting of battery modules while ensuring effective waterproofing, enhancing the device's waterproofing capabilities.
Implementation Method 1
The waterproof element is made of a material of greater resilience than the circumferential wall
Data Source
AI summary
A case for protecting a battery and an electronic device having the same are provided. The case includes a main body, a circumferential wall and a waterproof element. The main body includes a first side surface. The circumferential wall connects with the first side surface, extending along a first direction away from the first side surface, and includes a circumferential groove. The circumferential groove is around the circumferential wall and concavely disposed on an outer wall surface of the circumferential wall. The waterproof element includes a circumferential basal portion disposed in the circumferential groove and a circumferential raised portion disposed on an outer surface of the circumferential basal portion and corresponding in position to the circumferential groove. The circumferential raised portion includes a first segment and a second segment opposite to the first segment and farther from the first side surface than the first segment.