Eyeglass Lens Assembly With Integrated Locking Portions
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Solution Overview
Problem
Conventional eyeglass lens assemblies suffer from poor stability and inconvenience in assembly and replacement due to loose fittings and the need for tools, especially with bolt-based connections.
Innovation Solution
A lens assembly design featuring integrally-formed locking portions on the lens that directly connect to temples or frames, utilizing rod and hook mechanisms for secure alignment and mounting without requiring tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the lens is mounted in a full frame with a mounting hole, then the lens can be fitted and held, but the assembly stability is poor and the lens is easy to get loose and fall off
Solution Approach 1:
The lens assembly is segmented into distinct functional components: the lens body, the bridge portion, and the locking portions. This segmentation allows the lens to be easily inserted through the mounting hole while the locking portions engage separately with the frame's locking slots, providing both ease of assembly and stable fixation without requiring complex integrated structures
Solution Approach 2:
The locking portions are pre-formed on the lens assembly at specific positions, and the frame is pre-equipped with corresponding locking slots. This preliminary preparation of locking structures enables the lens to be quickly mounted by simply inserting it into the frame, after which the locking portions automatically engage with the slots to provide stable fixation without requiring additional tools or steps
2Reliability
If bolts are used for fixing the lens to the frame, then the assembly stability is improved, but tools are required for threading process making assembly and replacement inconvenient
Solution Approach 1:
The threading and bolting operations are completely extracted from the assembly process. Instead of using bolts that require threading and tool operation, the invention uses pre-formed locking portions on the lens that directly engage with corresponding locking slots in the frame. This extraction of complex fastening operations leaves only a simple insertion motion, making assembly and replacement as convenient as snap-fit designs while maintaining the stability of bolted connections
Solution Approach 2:
The locking portions on the lens assembly perform the self-service function of securing the lens to the frame without requiring external tools or complex operations. When the lens is inserted into the frame, the locking portions automatically engage with the locking slots through the predetermined geometric shapes, providing self-securing functionality that eliminates the need for bolt threading and tool-based fastening while ensuring stable assembly
3Ease of operation
If the lens is directly mounted to temples, then the assembly becomes more convenient, but the stability may be compromised
Solution Approach 1:
Different regions of the lens assembly have different functional qualities tailored to their specific purposes. The central lens portion provides optical functionality, the bridge portion provides structural connection between lenses, and the locking portions provide localized engagement features. This local differentiation of qualities allows the lens to be directly mounted to temples with high convenience while the specifically designed locking portions ensure adequate stability at the critical connection points
Data Source
AI summary
A lens assembly is provided. A locking portion is formed integrally on each of two sides of a lens. The locking portion can be either mounted and connected to a temple correspondingly or directly mounted to and fixed on a frame in a front direction of the frame. Thereby the assembly of the lens with the temples becomes easier and more conveniently. Users can also select the way of assembly according to their needs. Therefore, the purposes of convenient assembly and better stability are achieved.