Protective Case Camera Ring Retention Groove Deformation
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Solution Overview
Problem
Existing protective cases for portable electronic devices deform at the edge of the rear camera module hole, increasing the risk of detachment from the device and reducing stability when used with accessories.
Innovation Solution
A protective case design featuring a rear shell with a clamping element and a camera decorative ring, where the inner wall of the avoidance hole has a first retention groove and the camera decorative ring has a second retention groove, with specific limit surfaces and chamfers to prevent deformation and ensure a stable fit, reducing friction and stress concentration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the camera decorative ring wraps the edges of the avoidance hole, then the rear camera module is protected and decorated, but the case body edge near the avoidance hole deforms, increasing detachment risk and reducing stability
Solution Approach 1:
The patent divides the case structure into separate functional elements: the case body with avoidance hole, the camera decorative ring, and clamping elements. The decorative ring is separated from the case body edge, eliminating the deformation issue while maintaining protection and aesthetic functions through precise positioning via retention grooves and limit parts.
Solution Approach 2:
The patent introduces retention grooves and limit parts as intermediary structures between the case body and camera decorative ring. These intermediaries provide precise positioning and limiting functions, preventing deformation of the case body edge while ensuring stable attachment of the decorative ring.
2Ease of manufacture
If the camera decorative ring protrudes from the case body, then the rear camera module is decorated, but the case body edge deforms, affecting gripping and increasing detachment risk
Solution Approach 1:
The patent applies different structural qualities to different regions: the case body maintains its original strength and gripping properties, while the camera decorative ring provides aesthetic function through controlled protrusion. The clamping elements provide localized reinforcement at the avoidance hole edge without affecting the overall case strength.
3Adaptability or versatility
If the case body edge near the avoidance hole deforms, then the camera decorative ring can be installed, but the fitting with accessories such as brackets or charging equipment is affected, reducing stability
Solution Approach 1:
The patent incorporates clamping elements and retention grooves as preliminary structural features during case manufacturing. These pre-formed elements ensure that the case body maintains its structural integrity and provides stable fitting surfaces for accessories like brackets and charging equipment, while still accommodating the camera decorative ring.
Data Source
AI summary
Embodiments of the present application disclose a protective case for a portable electronic device, which includes a rear shell and a camera decorative ring, the rear shell includes a back plate and a clamping element, the back plate is provided with an avoidance hole, and the inner wall surface of the avoidance hole is provided with a first retention groove, the outer peripheral surface of the camera decorative ring is provided with a limit surface, and a limit part is formed between the limit surface and the inner end surface of the camera decorative ring; the limit part is embedded in the first retention groove, and the inner end surface of the camera decorative ring is evenly aligned with or lower than the inner surface of the back plate.