Wear-Resistant Weight-Adjustable Barbell for Stable Plate Mounting
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Solution Overview
Problem
Existing barbells require manual handling and frequent disassembly of weight plates, leading to friction, wear, instability, and safety issues during weight adjustment, occupying large storage space and posing risks of injury and damage.
Innovation Solution
A weight-adjustable barbell with cam mechanisms, wear-resistant layers, and a folding base design that allows for synchronized weight adjustment without manual handling, preventing friction and wear, and facilitating compact storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If weight plates are manually carried and mounted on the barbell, then weight adjustment is achieved, but friction occurs between weight plates and safety problems arise during mounting and disassembling
Solution Approach 1:
A wear-resistant layer is introduced as an intermediary between the weight plates and the barbell rod assembly. This layer prevents direct contact and friction between weight plates during mounting and disassembling operations, thereby eliminating wear and safety hazards while maintaining convenient weight adjustment functionality
Solution Approach 2:
The wear-resistant layer is pre-applied to the barbell rod assembly before weight plates are mounted. This beforehand protection prevents friction and wear from occurring during subsequent weight plate mounting and disassembling operations, eliminating safety problems associated with repeated manual handling
2Adaptability or versatility
If weight plates are frequently disassembled and mounted for weight adjustment, then training objectives in different stages are achieved, but weight loss occurs due to friction and instability arises
Solution Approach 1:
The wear-resistant layer serves as a mediator that prevents direct friction between weight plates during frequent mounting and disassembling. This eliminates weight loss due to friction and maintains the stability and reliability of weight plate mounting throughout repeated adjustment operations
Solution Approach 2:
The introduction of the wear-resistant layer changes the friction parameter between weight plates and the barbell rod assembly. This parameter change reduces friction to near-zero levels, preventing weight loss and maintaining mounting stability even during frequent disassembling and mounting operations
3Adaptability or versatility
If the barbell has a large size to accommodate weight plates, then weight adjustment functionality is achieved, but large storage space is occupied
Solution Approach 1:
The barbell system is segmented into a compact base unit and separate weight plates. The base unit with the wear-resistant layer is designed to be space-efficient for storage, while weight plates can be detached and stored separately, allowing the barbell to maintain full weight adjustment functionality while occupying minimal storage space when not in use
Data Source
AI summary
Provided are a weight-adjustable barbell, and a method for adjusting the weight of the barbell. Cam mechanisms on two sides of a barbell rod assembly have hitching parts and avoidance parts at different angles. The cam mechanisms at different positions are provided with the avoidance parts at different angles. When transmission shafts on two sides rotate at different angles, different numbers of weight plates can be hitched for weight adjustment. Wear-resistant layers are respectively arranged on two sides of bearing layers of the cam mechanisms, so that the weight plates can be prevented from being worn when in contact with the cam mechanisms.