Spectacle Locking Pin Assembly for Quick-Change Components
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Solution Overview
Problem
The existing tenon-force assembly in eyeglasses makes it difficult or impossible to quickly change components like temples or bridges, which is unsuitable for the variety of shapes and colors available in modern eyeglasses, limiting customization and convenience.
Innovation Solution
A pair of glasses with a lens element featuring an orifice with an introduction portion and a narrowed positioning portion, secured by a locking pin that extends through the orifice to lock the element in place, allowing easy assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a tenon is press-fitted into a recess in the frame, then the tenon is securely fixed to the frame, but it becomes very difficult or impossible to remove the tenon from the mount
Solution Approach 1:
The orifice is segmented into two distinct portions: an introduction portion with a first cross-sectional area and a positioning portion with a second cross-sectional area. This segmentation allows the element to be inserted through the larger introduction portion while being securely positioned in the smaller positioning portion, enabling both strong fixation and easy removal by simply pulling the element out through the introduction portion.
Solution Approach 2:
Instead of requiring forceful removal of a press-fitted element, the invention inverts the approach by designing an orifice that naturally guides insertion while allowing easy extraction. The element is inserted through the larger opening and locked in the smaller portion, but removal is achieved by simply pulling it back through the larger introduction portion, reversing the difficulty from insertion to removal.
2Stability of the object's composition
If a press-fit assembly is used for tenons, then the components are firmly secured, but it is no longer suitable for quickly changing different elements of glasses
Solution Approach 1:
The orifice is divided into an introduction portion and a positioning portion with different cross-sectional areas. This segmentation enables quick component changes by allowing the element to be easily inserted through the larger introduction portion and quickly secured in the smaller positioning portion, while removal is equally simple by pulling it back through the introduction portion.
Solution Approach 2:
The orifice is pre-designed with the positioning portion that automatically secures the element once inserted. The narrowed positioning portion acts as a preliminary locking mechanism that holds the element firmly in place without requiring additional fastening steps, enabling quick changes while maintaining stability.
3Strength
If the tenon is press-fitted perpendicular to the lens, then the tenon is secured to the frame, but the assembly cannot be easily disassembled
Solution Approach 1:
The orifice is segmented into an introduction portion and a positioning portion. The introduction portion has a larger cross-sectional area that facilitates easy insertion, while the positioning portion has a smaller cross-sectional area that provides secure retention. This segmentation allows the element to be firmly attached when inserted but easily disassembled by pulling it back through the larger introduction portion.
Data Source
Figure 1
Figure 2a
Figure 2b
AI summary
A pair of spectacles comprising a spectacle element mounted on a frame of said pair of spectacles or on a lens of said pair of spectacles, the lens or frame having at least one opening (6) provided with an insertion portion (7) for inserting the element through the opening, the insertion portion being extended by a narrowed positioning portion (8) for positioning the element in the lens or frame, the pair of spectacles further comprising a locking pin (14) arranged in the opening so as to extend at least through the insertion portion between the element on one side and the lens or frame on the other to lock the element in the pair of spectacles. A method for mounting a spectacle element onto a corresponding pair of spectacles.