Battery Cover Hook Structure for Secure Tool-Free Fastening
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Solution Overview
Problem
Existing electronic device battery cover fastening structures, such as screw, rib, rotation lock, and hook structures, face issues like increased device size, aesthetic deterioration, requirement for separate tools, potential damage to the product, and unintentional separation due to external impacts or weak fastening forces.
Innovation Solution
A battery cover fastening structure that includes a double injection design with first and second covers made of different materials, featuring first hook structures and second hooks with cantilever mechanisms, allowing for secure attachment and easy removal without additional tools, while maintaining stability and protecting the battery from external impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a screw fastening structure is used to fasten the battery cover to the housing, then the fastening force is improved, but the device size increases and additional components are required
Solution Approach 1:
The hook structure is integrated into the battery cover itself, with the hook portion formed as an integral part of the cover body. This nesting approach eliminates the need for separate fastening components while maintaining strong attachment force through the elastic deformation of the hook into the housing cavity.
Solution Approach 2:
The fastening function is extracted from the battery cover body and implemented through a dedicated hook structure that can be formed as an integral part of the cover. This separation allows the main cover body to remain compact while the hook provides the necessary fastening force independently.
2Strength
If a rotation lock structure is used to fasten the battery cover to the housing, then the fastening force is improved, but aesthetics are deteriorated and a separate tool is required for operation
Solution Approach 1:
The hook structure is designed to be manually operated by the user without requiring separate tools. The elastic deformation of the hook allows it to be easily inserted into and removed from the housing cavity through simple manual pressure, making the fastening and release operations self-service and tool-free.
3Strength
If a hook fastening structure is used to fasten the battery cover to the housing, then the fastening force is improved, but a separate tool is required to release the fastening and product exterior may be damaged
Solution Approach 1:
The hook structure utilizes elastic deformation as its operating principle, allowing it to flexibly change shape during fastening and release operations. The hook can be elastically deformed to engage with the housing cavity and then return to its original shape to maintain strong fastening force, while the same elastic property allows easy release through manual pressure without damaging the product exterior.
4Reliability
If the fastening force between the battery cover and housing is increased to prevent unintentional separation, then reliability is improved, but the battery cover becomes difficult to remove when needed
Solution Approach 1:
The hook structure employs elastic deformation to create a dynamic fastening system. During normal use, the elastic hook maintains strong fastening force to prevent unintentional separation. When removal is needed, applying manual pressure causes the hook to elastically deform and release from the housing cavity, allowing easy removal without compromising the strong fastening during typical use.
Data Source
AI summary
An electronic device may include the first housing facing the first direction, the second housing fastened to the first housing to face the second direction opposite to the first direction and including the battery disposition space open toward the second direction and the plurality of first insert portions that are apart from each other on the periphery of the battery disposition space along a circumference of the battery disposition space, and the cover fastened to the second housing to cover the battery disposition space, the cover including the first cover including the first material and the second cover including the second material and coupled to the first cover from the second direction, wherein the first cover may include the plurality of first hook structures provided at locations corresponding to the plurality of first insert portions and configured to fasten the second housing to the cover by being inserted into the plurality of first insert portions.