Spectacle Hinge Clip Assembly With Fastener-Free Locking Positions
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Solution Overview
Problem
Existing eyeglass hinges and frames have complex geometries, leading to instability and increased maintenance needs.
Innovation Solution
A spectacle hinge with a simple geometry comprising a frame, temple, and connecting clip, featuring a curved end that fits into a retention area formed by the frame and clip, with locking positions and optional elastic deformation for secure attachment without fasteners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex geometries are used in eyeglass hinges and frames, then connection stability may improve, but the structure becomes less stable and requires more maintenance
Solution Approach 1:
The hinge is divided into three separate components: a frame part, a temple part, and a connecting clip. This segmentation allows each part to have simple geometry while maintaining stable connection through the modular assembly of these components.
Solution Approach 2:
A connecting clip serves as an intermediary element between the frame and temple. This simple geometric connector provides stable attachment without requiring complex geometries in the frame or temple themselves, resolving the contradiction between connection stability and geometric simplicity.
2Strength
If complex geometries and multiple components are used, then connection strength may improve, but the hinge becomes heavier and harder to maintain
Solution Approach 1:
The connecting clip combines multiple functions into a single component: it attaches the temple to the frame, provides locking positions, and enables easy removal. This merging achieves strong connection with minimal components, avoiding the need for multiple separate parts.
Solution Approach 2:
The curved end of the temple and corresponding surfaces in the connecting clip create automatic locking positions through their geometry alone, without requiring additional fasteners or complex mechanisms. The structure serves itself to maintain connection strength.
3Reliability
If traditional fasteners and complex mechanisms are used, then attachment security may improve, but ease of maintenance and cleaning deteriorates
Solution Approach 1:
Traditional fasteners (screws, pins, locks) are completely extracted from the design. The connecting security is achieved through the geometric interaction between the curved temple end and the connecting clip, which can be easily opened and closed by the user for maintenance or cleaning.
4Strength
If multiple fasteners and locking elements are used, then attachment security may improve, but device complexity and weight increase
Solution Approach 1:
The connecting clip and temple design uses simple, lightweight materials without expensive fasteners or locking mechanisms. The simple geometric design achieves adequate attachment security while minimizing weight, accepting that the components are designed for easy replacement rather than permanent durability.
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 hinge is lightweight, easy to maintain, and user-friendly for lens insertion/removal, providing stability and ease of cleaning with minimal components.
Implementation Method 1
The curved end is flexible and elastically deforms when inserted. The retaining area is narrow compared to the curved end, so that the curved end is under tension in the retaining area because it is pressed together.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a spectacle hinge comprising a spectacle front (1), a temple (3) which includes a curved end (31), and a connecting clip (2). The connecting clip (2) is designed to be placed on a lateral end (10) of the spectacle front (1). The spectacle front (1) and the connecting clip (2) each have an outer bulge (13, 21) which, in the assembled state, point away from each other, so that a retaining area (5) for the curved end (31) is formed between the bulges (13, 21). The curved end (31) of the temple (3) can be inserted into the retaining area (5) and is rotatably mounted therein in the inserted state. The retaining area (5) and the curved end (31) have corresponding surfaces (311, 312) which form at least two locking positions.