Hand Gripper With Adjustable Elastic Force Grooves
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Solution Overview
Problem
Conventional hand grippers lack the ability to adjust the strength of elastic force effectively, limiting user customization and versatility, especially for athletes who require varying levels of resistance.
Innovation Solution
A hand gripper design featuring symmetrically placed spring members on the arms with adjustable elastic force grooves and a stopper mechanism, allowing for multiple steps of resistance adjustment and easy grip surface replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional hand gripper with a fixed spring is used, then the structure is simple, but the elastic force strength cannot be adjusted
Solution Approach 1:
The hand gripper is divided into separable components including a body, spring member, and grip portion that can be independently adjusted or replaced. The spring member is positioned at a specific distance from the rotation axis, allowing modular adjustment of elastic force characteristics without redesigning the entire device.
Solution Approach 2:
The hand gripper transitions from a fixed-configuration device to a dynamically adjustable one through the stopper mechanism that can be positioned at multiple locations along the arm. This allows the elastic force strength to be changed during use based on user needs, implementing adaptability while maintaining relatively simple structural elements.
2Adaptability or versatility
If the number of elastic force adjusting grooves is limited, then the device complexity is reduced, but the variety of adjustment steps is insufficient
Solution Approach 1:
Instead of increasing the number of grooves in a single dimension, the invention introduces a second dimension of adjustment through the stopper mechanism that can be positioned at multiple discrete locations. This provides variety of adjustment steps without proportionally increasing structural complexity, as the stopper can engage with existing grooves at different positions along the arm.
3Adaptability or versatility
If the grip portion is fixed to the body, then the structure is simpler, but the grip surface cannot be easily replaced
Solution Approach 1:
The grip portion is separated from the body as an independent component that can be replaced. The spring member positioning mechanism and stopper mechanism are designed to work with this separable configuration, allowing users to change grip surfaces without affecting the core functional mechanisms of the hand gripper.
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 precise adjustment of elastic force in multiple steps, accommodating different user strengths and improving user experience by allowing customizable resistance levels and easy grip surface changes.
Implementation Method 1
a spring of which both ends are respectively fixed to the left and right arms and a central portion is wound with a coil
Implementation Method 2
each of the spring members including a compression spring
Data Source
AI summary
The present invention relates to a hand gripper including a first arm, a second arm, a pair of spring members, a first spring member coupling shaft, and a second spring member coupling shaft, wherein a plurality of first elastic force adjusting grooves and a plurality of second elastic force adjusting grooves, to which the first spring member coupling shaft and the second spring member coupling shaft are selectively coupled, respectively, to adjust strength of elastic force provided by the spring members, are formed in a first body of the first arm and a second body of the second arm, respectively.