Barbell Assembly with Inflatable Impact-Absorbing Weights
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Solution Overview
Problem
Conventional barbell assemblies with metal or plastic weights damage exercise or competition surfaces during weight pushing and pulling exercises, and existing impact-absorbing weights do not adequately protect surfaces when dropped, failing to provide sufficient safety for users.
Innovation Solution
A barbell assembly featuring impact-absorbing weights with inflatable components, such as vehicle wheels and tires, mounted on a high-strength bar, which absorb kinetic energy and reduce noise, and includes a swivel assembly for secure tethering during exercises, allowing for weight pushing and pulling without surface damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If conventional metal or plastic weights are used in barbell assemblies, then the weights provide sufficient mass for strength training exercises, but they damage exercise or competition surfaces when dropped or during weight pushing/pulling exercises
Solution Approach 1:
The weight assembly combines a dense inner weight section (metal or plastic) with an outer resilient skin (rubber or polyurethane material). This composite structure maintains the necessary mass for training while the resilient outer layer prevents surface damage during drops or contact exercises.
Solution Approach 2:
A resilient outer skin made of rubber or polyurethane material envelops the inner weight section. This flexible shell absorbs impact forces and prevents direct contact between the hard weight and the exercise surface, eliminating damage during weight pushing and pulling exercises.
2Object-affected harmful factors
If rubber or plastic coating is applied to weights, then noise and minor surface damage are reduced, but adequate protection during drops on hard surfaces is not achieved
Solution Approach 1:
The combination of dense inner weight material with resilient outer rubber or polyurethane skin creates a structure that provides both noise reduction and adequate impact protection during drops on hard surfaces like concrete or asphalt.
Solution Approach 2:
The resilient outer skin changes the physical parameters of the weight's outer surface, providing elasticity and shock absorption capabilities that protect against impact damage and reduce noise during drops on various surfaces.
3Object-affected harmful factors
If exercise surfaces are covered with protective mats, then impact damage and noise are reduced, but the mats only protect the covered area and do not protect users from being struck by weights
Solution Approach 1:
The protective function is extracted from the environment (mats covering the floor) and integrated directly into the weight assembly itself. The resilient outer skin provides protection wherever the weight is used, eliminating the need for extensive mat coverage and providing inherent safety even when users are nearby.
4Weight of moving object
If heavier weights are used for strength training, then training effectiveness increases, but the risk of surface damage and user injury from drops increases
Solution Approach 1:
The resilient outer skin remains effective regardless of the inner weight section's mass. This allows users to employ heavier weights for increased training intensity while the outer layer continuously absorbs impact forces, preventing surface damage and reducing injury risk even with higher-weight equipment.
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 barbell assembly effectively prevents surface damage and enhances user safety by using inflatable components to absorb impact and reduce noise, enabling exercises on various surfaces without causing indentations or damage, and allows for secure attachment during weight pulling exercises.
Implementation Method 1
an inflatable component adapted to be affixed to the weight and inflated... absorb impact and reduce noise
Data Source
AI summary
A barbell assembly includes a bar and a weight subassembly adjacent each end of the bar. Each weight subassembly includes a wheel with a predetermined pattern of through holes and an inflatable component around the periphery of the wheel. A hub defines a flange having a plurality of through holes corresponding to the through holes on the wheel for securing the wheel to the hub with fasteners. The hub is secured to the bar with fasteners, or the flange is secured to the bar by welding or with fasteners. An outer end of the bar is provided with a U-shaped swivel having a hook that rotates freely relative to the outer end and the grip portion of the bar. The barbell assembly may be utilized to perform weight training exercises without causing damage to an exercise surface, and may be locked to an immovable fixture using a tether and a lock.