Casing Assembly Flash Lens Decorative Ring Abrasion Protection
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Solution Overview
Problem
The large surface area of rear casings on terminals, such as smartphones, makes them prone to scratches and abrasions when in contact with external objects, which can compromise their appearance and functionality.
Innovation Solution
A casing assembly that includes a casing with a first through hole, a flash lens covering the hole, and a decorative ring passing through the hole and coupled to the flash lens and casing, where the decorative ring extends out of the outer surface, creating a height difference that prevents the transparent area from contacting flat surfaces and thus reduces abrasion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the rear casing has a large surface area, then the terminal structure is simplified and manufacturing is easier, but the casing becomes prone to scratches and abrasion when in contact with external objects
Solution Approach 1:
The rear casing is segmented into a transparent area and a decorative ring area. The decorative ring extends outward from the transparent area to form a protective protrusion. This segmentation allows the transparent area to maintain its large surface area for aesthetic purposes while the decorative ring provides localized protection against scratches and abrasion.
Solution Approach 2:
The decorative ring extends in the vertical dimension (outward from the rear casing surface) to create a protective barrier. By adding this vertical extension, the patent protects the transparent area from horizontal contact with external objects without reducing the horizontal surface area of the transparent region.
2Object-affected harmful factors
If the decorative ring extends out of the outer surface to prevent abrasion, then the anti-abrasion performance is improved, but the appearance complexity and device design difficulty increase
Solution Approach 1:
The decorative ring serves multiple functions: it provides aesthetic decoration, protects the transparent area from abrasion, and can be integrated with the flash lens assembly. By combining multiple functions into a single structural element, the patent reduces overall device complexity despite the extended geometry.
Solution Approach 2:
The decorative ring is merged with the flash lens assembly, where the flash lens is disposed within or integrated into the decorative ring structure. This merging reduces the number of separate components and simplifies the overall assembly process, offsetting the increased complexity from the extended geometry.
3Device complexity
If the flash lens is integrated with the decorative ring, then the number of components is reduced and assembly is simplified, but the optical performance and manufacturing precision requirements increase
Solution Approach 1:
The flash lens is pre-positioned within the decorative ring during the decorative ring manufacturing process, rather than being attached separately afterward. This preliminary action ensures precise positioning and alignment, reducing manufacturing precision requirements for subsequent assembly steps.
Solution Approach 2:
The flash lens is nested within the decorative ring structure, where the decorative ring forms an outer housing or mounting structure for the flash lens. This nesting arrangement simplifies assembly by eliminating separate mounting operations and ensures precise relative positioning through the nested geometry.
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 effectively protects the transparent area from abrasion while allowing light to pass through and enabling the flashlight to function without the need for additional anti-abrasion features, maintaining the terminal's optical performance and compact component arrangement.
Implementation Method 1
The flash lens covers the first through hole
Implementation Method 2
the decorative ring extends out of the outer surface... creating a height difference that prevents the transparent area from contacting flat surfaces and thus reduces abrasion
Data Source
AI summary
The present disclosure relates to a casing assembly and a terminal. The casing assembly includes a casing, a flash lens, and a decorative ring. The casing has an outer surface and an inner surface opposite the outer surface. The casing defines a first through hole. The first through hole extends through the outer surface and the inner surface. The flash lens covers the first through hole. The decorative ring passes through the first through hole and is coupled to the flash lens and the casing. The decorative ring extends out of the outer surface.