Rimless Glasses Lens Fixing via Ultrasonic Welding
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Solution Overview
Problem
Traditional rimless glasses are heavy due to screw and nut fixation, prone to loosening, and susceptible to lens damage from external forces, leading to improper fit and visual issues over time.
Innovation Solution
The design incorporates a lens positioning frame with integrated stainless steel supports and screw fixation system that disperses clamping force across large areas, ensuring secure and durable lens positioning, easy assembly, and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If traditional screw and nut fixation is used for rimless glasses, then the connection between lenses and temples is achieved, but the glasses become relatively heavy
Solution Approach 1:
The patent replaces the traditional screw-nut mechanical fastening system with an ultrasonic welding process. The ultrasonic welding device uses high-frequency vibration energy to directly fuse the temple to the lens periphery, eliminating the need for separate fastening components. This substitution reduces the overall weight while maintaining connection reliability through direct material bonding.
Solution Approach 2:
The patent merges the temple and lens into a single integrated structure through ultrasonic welding. By directly bonding these components without intermediate fasteners, the design eliminates the weight of separate fastening parts while creating a unified, reliable connection that resists loosening over time.
2Reliability
If traditional screw fixation is used, then lens mounting is achieved, but screws are easy to loosen after extended wear
Solution Approach 1:
The patent replaces the threaded mechanical fastening system with ultrasonic welding, which creates a permanent bond between the temple and lens. This eliminates the inherent problem of screw loosening that occurs with repeated wear and adjustment, as the welded joint maintains constant bonding strength without mechanical threads that can degrade over time.
3Device complexity
If direct screw fixation on lenses is used, then simple structure is achieved, but external forces can directly damage the lenses
Solution Approach 1:
The patent replaces direct screw penetration of the lens with ultrasonic welding that bonds the temple to the lens periphery. This method distributes external forces across the bonded interface rather than concentrating stress at screw holes, preventing lens damage while maintaining structural simplicity. The welding process creates a strong joint without requiring holes or fasteners that could compromise lens integrity.
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 provides a lightweight, secure, and durable rimless glasses design that prevents lens damage and maintains fit, offering reliable connection, ease of assembly, and convenient maintenance.
Implementation Method 1
a first fixing screw is in threaded connection with a front end of the positioning screw tube, and a second fixing screw is disposed at a rear end of the positioning screw tube
Implementation Method 2
when the first fixing screw is tightened, the left end piece and a front end support of the lens positioning frame are forced to press tightly against a front end face of the left lens
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present invention discloses novel rimless glasses, which include a left temple 1, a left end piece 2, a left lens 3, a nose mid-bridge 4, a right lens 5, a right end piece 6, and a right temple 7. A first lens fixing device 8 is disposed between the left end piece 2 and a left end of the left lens 3. A second lens fixing device 9 is disposed between a right end of the left lens 3 and a left end of the nose mid-bridge 4. A third lens fixing device 10 is disposed between a right end of the nose mid-bridge 4 and a left end of the right lens 5. A fourth lens fixing device 11 is disposed between a right end of the right lens 5 and the right end piece 6. The first lens fixing device 8 includes a lens positioning frame 81. A positioning screw tube 82 is disposed through a slotted end of the lens positioning frame 81. A first fixing screw 83 is in threaded connection with a front end of the positioning screw tube 82, and a second fixing screw 84 is disposed at a rear end of the positioning screw tube 82. A first through hole 31 is disposed at the left end of the left lens 3, and the positioning screw tube 82 is disposed through the first through hole 31. The aforementioned technical solution has a reasonable structure design, a simple structure, a reliable connection, not easy looseness, ease of assembly and disassembly, convenient maintenance, and achieves a reinforcement effect on the lenses.