Eyewear Temple Length Adjustment With Recessed Screw Tip
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Solution Overview
Problem
Existing eyewear, particularly for children, is difficult to adjust to fit the head comfortably and safely, and mechanisms for adjusting temple length often restrict adjustment range or pose a risk of head damage due to protruding screw heads.
Innovation Solution
A temple length adjustment mechanism featuring a female thread part, a temple tip with an insertion hole, a coil spring, and an adjustment screw that allows for secure and adjustable temple length adjustment without protruding screw heads, enabling easy fitting and growth accommodation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixing screw is screwed into the female thread part to adjust temple length, then the temple length can be adjusted, but the screw head or shank may protrude from the rear end of the temple tip causing potential head damage
Solution Approach 1:
The harmful protruding screw head is extracted from the system by providing a recess in the temple tip that receives and contains the screw head, eliminating the damage risk while preserving the adjustment function
Solution Approach 2:
The recess is provided in advance in the temple tip to receive the screw head before any adjustment operation, preventing potential head damage from protruding screw heads during normal use
2Object-affected harmful factors
If a set screw without screw head is used to avoid protrusion, then head damage is prevented, but adjustment range of temple length is restricted to limited range
Solution Approach 1:
The temple tip is segmented into a main body and a recess portion, where the recess is specifically designed to receive the screw head, allowing the screw to be fully threaded into the female thread part without protruding while maintaining adequate adjustment range
3Volume of moving object
If the female thread part is made narrow to fit in the temple tip, then the temple tip structure is compact, but the threading amount is reduced limiting adjustment capability
Solution Approach 1:
The recess is nested within the temple tip structure, creating a dedicated space that allows the female thread part to have sufficient length for adequate threading amount while keeping the overall temple tip compact and fit within the ear structure
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 mechanism provides a secure and adjustable temple length adjustment that accommodates growth, ensuring comfortable and safe wear for children, reducing the need for repeated fitting and minimizing the risk of head damage.
Implementation Method 1
a coil spring that applies a spring force between the temple and the temple tip by being contained in the insertion hole
Data Source
AI summary
There is provided eyewear equipped with a temple length adjustment mechanism, including: a lens frame; a temple with a female thread having a rear opening opposite a front end connected to the lens frame via a hinge; a temple tip with an insertion hole for forward and backward movement in an extending direction of the temple; a coil spring that applies a spring force between the temple and the temple tip by being contained in the insertion hole; and an adjustment screw to adjust containment length so the rear end portion of the temple is contained in the insertion hole when a shank is pushed into the insertion hole with the shank penetrating the coil spring, a male thread part is screwed into the female thread part, and a threading amount between the male thread part and the female thread part is adjusted.