Rotating Grip Exercise Bar for Wrist Strain Reduction
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Solution Overview
Problem
Conventional barbells with fixed grip portions cause strain and injury due to non-optimal grip positioning during exercises, as the wrist and forearm rotate unevenly, leading to excessive torsion on the wrist and forearm.
Innovation Solution
An exercise bar assembly with rotating grip assemblies and an elastic element that provides resistance, allowing the hand grips to rotate naturally with the wrist and forearm, adjustable to vary resistance levels by changing mounting positions or using different elastic bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed grip portion is used on a barbell, then the structure is simple and stable, but the wrist and forearm experience excessive torsion and strain during exercise
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed grip portion into a rotatable grip assembly. The grip can rotate within a housing during exercise movements, allowing the wrist and forearm to move more naturally without excessive torsion. This dynamic adjustment resolves the contradiction by maintaining structural simplicity while eliminating harmful strain through controlled rotation.
Solution Approach 2:
The grip assembly is segmented into separate components: a grip portion, a housing, and a rotation mechanism. This segmentation allows the grip to rotate independently within the housing, providing freedom of movement while maintaining overall structural stability. The segmented design resolves the contradiction by decoupling the structural support function from the grip positioning function.
2Ease of manufacture
If the grip portion is fixed as part of a rigid bar, then manufacturing is simple, but the grip position becomes non-optimal during exercise movements
Solution Approach 1:
The grip assembly incorporates a rotation mechanism that allows the grip to dynamically adjust its position during exercise movements. The grip can rotate within the housing to maintain an optimal position relative to the user's wrist and forearm, resolving the contradiction between simple manufacturing and ease of operation.
Solution Approach 2:
The grip assembly changes the orientation parameter of the grip portion during exercise movements. By allowing rotation within the housing, the grip can adjust its angular position to maintain optimality throughout the range of motion, while the overall bar structure remains simple and easy to manufacture.
3Productivity
If an elastic element is added to provide resistance, then workout effectiveness is enhanced, but device complexity increases
Solution Approach 1:
The elastic element is merged with the existing grip assembly structure. The resistance mechanism is integrated into the housing and rotation mechanism, combining multiple functions (rotation, resistance provision, and structural support) into a single integrated assembly. This merging resolves the contradiction by enhancing workout effectiveness without proportionally increasing device complexity.
Solution Approach 2:
The grip assembly serves multiple functions: it provides structural support, enables rotation for natural movement, and incorporates an elastic element for resistance. This multi-functionality resolves the contradiction by combining workout effectiveness enhancement with a unified structure that doesn't excessively increase complexity.
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
Reduces strain and injury by maintaining optimal grip positioning, providing adjustable resistance to enhance workout effectiveness and safety.
Implementation Method 1
an elastic element engageable between the pair of rotating grip assemblies along the longitudinal axis, the elastic element having a spring constant for resisting rotation of the hand grip
Data Source
AI summary
An exercise bar assembly includes a pair of rotating grip assemblies, each including a generally planar frame and a hand grip mounted within the frame for rotation within in the plane of the frame. The rotating grip assemblies are attachable to opposite ends of a center bar assembly along the longitudinal axis of the bar assembly. A plate bar assembly is attachable to each of the rotating grip assemblies opposite the center rod, with the plate bar assembly aligned with the longitudinal axis to form a weight lifting bar. A user-selectable elastic band is engageable between the pair of rotating grip assemblies along the longitudinal axis so that the elastic band resists rotation of each hand grip in each of the rotating grip assemblies. The rotating grip assemblies of the exercise bar assembly allow for the full range of motion of the bicep, and the elastic band creates a resistance exercise through the bicep's full range of motion.