Adjustable Squat Bar With Rotating Weight Bars for Back Comfort
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Solution Overview
Problem
Existing exercise bars lack adjustability in weight location and size accommodation, leading to discomfort and potential injury during squats, particularly for users with back problems or varying body sizes.
Innovation Solution
An exercise bar with adjustable weight bars and support bars that allow for horizontal rotation and sliding adjustments, enabling users to customize the camber and spacing to optimize squat exercises based on their size and comfort needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the barbell is positioned on the user's upper back for back squat, then the user can support more weight, but the load on the back becomes uncomfortable and may cause injury
Solution Approach 1:
The barbell is divided into separate components: a center bar that contacts the back, and offset weight bars that carry the majority of the weight. This segmentation allows the back to support minimal weight while the hands support the offset weights, resolving the contradiction between weight capacity and back comfort.
Solution Approach 2:
The hands act as an intermediary between the back and the weights. By using handles that extend over the shoulders, the hands mediate the weight support, allowing the back to remain relatively free from heavy loading while still enabling high weight support capability.
2Object-affected harmful factors
If the barbell is supported in front of the upper chest for front squat, then the load on the back is reduced and angles are improved, but the weight that can be used is limited by arm strength
Solution Approach 1:
The weight bars are positioned asymmetrically offset from the center bar, creating a configuration where the weights are carried forward of the chest. This asymmetric arrangement allows the hands to support the weight in a front-squat-like position while the offset geometry provides mechanical advantage beyond pure arm strength.
Solution Approach 2:
The barbell allows dynamic adjustment of weight bar positions relative to the center bar. Users can adjust the offset distance to optimize the balance between back load reduction and weight support capability, adapting the system's characteristics during use.
3Ease of manufacture
If fixed barbell design is used, then manufacturing is simple, but the bar cannot accommodate users of different sizes or optimize for various squat styles
Solution Approach 1:
The barbell incorporates adjustable mechanisms allowing users to modify the offset distance of weight bars and the position of handles. This dynamic adjustability enables the same device to accommodate users of different sizes and optimize for various squat styles without complicating the basic manufacturing process.
Solution Approach 2:
The barbell design integrates multiple functions into a single device: it can perform both back squat and front squat variations, accommodate different body sizes through adjustment, and provide optimized weight distribution. This multi-functionality achieves versatility while maintaining a unified manufacturing approach.
Data Source
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AI summary
An exercise bar includes a center bar; a pair of weight bars, each weight bar rotatable relative to the center bar about a pivot axis to a plurality of camber positions; a pair of support bars configured to rest on a user's shoulder, each support bar extending from one of the weight bars; and a locking mechanism for locking the weight bars in any of the plurality of camber positions.