Adjustable Hand Gripper Structure for Variable Grip Span
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Solution Overview
Problem
Conventional hand grippers have a fixed grip span, limiting their application for users with small hands or those with palm injuries, preventing them from performing single-handed grip training.
Innovation Solution
A hand gripper with an adjustable grip span achieved through an elastomer, axial rod, and locking member, allowing the angle between grip portions to be adjusted to accommodate different hand sizes and needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the grip span is fixed in a conventional hand gripper, then the structure is simple and easy to manufacture, but the adaptability to different hand sizes and conditions is limited
Solution Approach 1:
The hand gripper structure is transformed from a fixed configuration to a dynamically adjustable one. The second handle is divided into multiple segments that can be repositioned along the handle shaft, allowing the grip span to be changed according to different user needs. This dynamic adjustment capability resolves the contradiction by enabling adaptability without requiring a completely different device for each grip span.
Solution Approach 2:
The second handle is segmented into multiple adjustable sections that can be independently positioned. By dividing the handle into segments with adjustment holes at different positions, the design allows for flexible configuration of the grip span. This segmentation approach enables adaptability while maintaining a relatively simple overall structure that can be manufactured using conventional methods.
2Adaptability or versatility
If the grip span is fixed, then the manufacturing process is simple, but the device cannot accommodate users with small hands or palm injuries
Solution Approach 1:
The adjustable grip span mechanism allows the hand gripper to adapt to different user requirements, including those with small hands or palm injuries. The second handle can be repositioned to create appropriate gaps, enabling these users to perform exercises comfortably. This dynamic adjustment capability is achieved through a straightforward mechanical design that does not significantly complicate the manufacturing process.
3Adaptability or versatility
If the grip span is adjustable through multiple components, then the adaptability is improved, but the device complexity and number of parts increases
Solution Approach 1:
The second handle is divided into segments with adjustment holes at different positions along the handle shaft. This segmentation allows for grip span adjustment while keeping the overall structure relatively simple. The segments are connected through straightforward mechanical joints, minimizing the number of additional components required while still achieving the desired adjustability.
Solution Approach 2:
The adjustable second handle serves multiple functions: it provides structural support, enables grip span adjustment, and allows for different exercise configurations. By making this single component multi-functional, the design achieves adaptability without proportionally increasing the total number of components in the device.
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 adjustable grip span expands the applicability of the hand gripper, enabling it to accommodate users with varying hand sizes and conditions, including those with special needs.
Implementation Method 1
the elastomer undergoing elastic deformation in response to the angle being changed
Data Source
AI summary
A hand gripper includes an elastomer, a first grip portion, a second grip portion, an axial rod, and a locking member. The first grip portion and the second grip portion each has one end connected to the elastomer and another end to form a free end. An axis of the first grip portion and an axis of the second grip portion form an angle. When the angle changes, the elastomer undergoes elastic deformation. An adjustment hole is formed in the second grip portion. One end of the axial rod is connected to the first grip portion, and another end of the axial rod extends in a direction towards the second grip portion to movably pass through the adjustment hole. The locking member can be locked at different positions along the axial rod to abut against the second grip portion or unlock from the axial rod.