3D Swivel Joint Structure for Surfboard Leash Tension Relief
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Solution Overview
Problem
Existing surfboard leash connectors are limited to two-dimensional rotation, which affects a surfer's balance and comfort by not mitigating instantaneous tension effectively.
Innovation Solution
A swivel joint with three-dimensional rotating handles and ball bearings, allowing the leash to rotate freely in three dimensions, enhancing balance and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a circular supporting bearing is used for two-dimensional rotation, then the structure is simple, but the connector cannot rotate in three dimensions, affecting balance and comfort
Solution Approach 1:
The patent transitions from two-dimensional rotation (circular bearing) to three-dimensional rotation by introducing a spherical bearing structure. The spherical bearing allows rotation around multiple axes (x-axis, y-axis, and z-axis), enabling the connector to adapt to wave movements in three dimensions while maintaining structural simplicity through the inherent geometry of the spherical design
2Reliability
If a two-dimensional rotating connector is used, then the manufacturing is simple, but it cannot mitigate instantaneous tension effectively, reducing surfer comfort
Solution Approach 1:
The spherical bearing enables three-dimensional rotation, allowing the connector to absorb and mitigate instantaneous tension from wave impacts more effectively than two-dimensional rotation. The spherical geometry naturally distributes forces across multiple axes, providing superior shock absorption while remaining manufacturable using standard spherical bearing production techniques
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 three-dimensional rotation provides improved balance and reduces instantaneous tension, resulting in increased comfort for surfers.
Implementation Method 1
one end of the first rotating handle is configured with a first ball bearing, and the other end of the first rotating handle is configured with a first fastening hole; and first joint portion, wherein the first joint portion is configured with a cavity to accommodate the first ball bearing for rotating the first rotation handle in three dimensions
Data Source
AI summary
The present invention provides a swivel joint of a strap-type leash, wherein one end of the strap-type leash connects to one end of a rope through a first connector, the other end of the rope connects to a rail protection band through a second connector, and the rail protection band is configured with a hooking string for hooking a surfboard. The first connector includes a first rotating handle, wherein one end of the first rotating handle is configured with a first ball bearing, and the other end of the first rotating handle is configured with a first fastening hole. The first connector further includes a first joint portion, wherein the first joint portion is configured with a cavity to accommodate the first ball bearing for rotating the first rotation handle in three dimensions, and a plurality of rings are configured around an outer side of the first joint portion.