Adjustable Bracelet Clasp Holder With Bendable Reach
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Solution Overview
Problem
Existing bracelet fastening devices are cumbersome and difficult to use, especially for individuals with limited dexterity or varying hand sizes, as they lack adjustability, proper control, and protection for delicate bracelets.
Innovation Solution
A bracelet fastening device featuring a spring-biased clasp gripping member, a bendable metal rod, a holding member, a sliding member, and a resilient rod covering member, allowing for adjustable length and proximity to the wrist, with removable gripping members and rubber tips for protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a rigid elongate handle is used to hold the bracelet loop end, then the device provides structural support, but it becomes difficult for the gripping portion to reach close proximity to the user's wrist
Solution Approach 1:
The handle is made bendable rather than rigid, allowing it to dynamically adjust its shape. The handle can be bent into a curve to reach around the wrist, enabling the gripping portion to get close to the wrist while maintaining structural integrity through the flexibility of the material.
2Adaptability or versatility
If a non-adjustable handle length is used, then the device structure is simple, but it is difficult to comfortably fit various hand sizes
Solution Approach 1:
The handle incorporates a sliding mechanism that allows the length to be dynamically adjusted. A sliding member can move along the handle to change the effective length, enabling the same device to comfortably fit different hand sizes without requiring multiple devices or complex mechanical adjustments.
Solution Approach 2:
The handle is divided into segments that can slide relative to each other. This segmentation allows the handle length to be adjusted in discrete steps, providing adaptability for different hand sizes while keeping the adjustment mechanism relatively simple.
3Force
If hard teeth are used in the alligator clip, then the gripping strength is high, but the delicate bracelet may be harmed
Solution Approach 1:
The gripping surface has non-uniform properties: the bulk material remains hard for structural strength, but the contact surface features soft rubber tips or cushions. This local quality change allows the clip to exert sufficient gripping force while the soft contact points prevent damage to delicate bracelet surfaces.
Solution Approach 2:
The alligator clip combines hard material (for structural integrity and gripping force) with soft material (rubber tips or cushions on the teeth). This composite structure allows the device to simultaneously achieve high gripping force and protection for delicate bracelets.
4Ease of operation
If the holding portion has a non-ideal shape, then the device is simpler to manufacture, but maximum control of the device cannot be maintained
Solution Approach 1:
The holding portion features a non-uniform cross-sectional shape, being thicker in certain areas and thinner in others. This local variation in geometry provides better ergonomic grip and control for the user's fingers, allowing maximum control while still being manufacturable through standard molding or machining processes.
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
Enables one-handed bracelet attachment with improved comfort and control, accommodating various hand sizes and protecting delicate bracelets during the fastening process.
Implementation Method 1
a spring biased clasp gripping member
Implementation Method 2
the upper gripping portion terminating at one end in a gripping jaw
Implementation Method 3
a bendable metal rod
Implementation Method 4
a resilient rod covering member encasing said bendable rod
Data Source
AI summary
A bracelet fastening device with a spring biased clasp gripping member, a bendable metal rod, a holding member, a sliding member, a spring post, and a resilient rod covering member. The holding member is ball shaped at one end and slidably engages with the sliding member and attached rod. The clasp gripping member is constructed like a standard alligator clip and is fixed to the opposite end of the bendable metal rod. The spring post is located within the sliding member and can engage one of a plurality of recesses inside the holding member so that the user can adjust the overall length of the device. The bendable metal rod is covered by the resilient rod covering. The rod and covering can be bent so that the clasp gripping member is in close proximity to the clasp being fastened.