Forearm Wrist Roller Assembly for Stable Multi-Grip Strength Training
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Solution Overview
Problem
Existing forearm-and-wrist rollers are not stable and require trainers to support their weight during exercise, leading to shoulder strain, and lack versatility in muscle training methods.
Innovation Solution
A multi-use strength training device with a forearm-and-wrist roller mounted onto a vertical pole, featuring adjustable weights, rotating handles, and pulley systems that allow for different muscle training exercises, including a cushion for support and adjustable pole heights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a forearm-and-wrist roller is designed as a stand-alone piece of equipment, then it is simple in structure and easy to manufacture, but it requires the trainer to support its weight during exercise, causing shoulder strain and reducing training effectiveness
Solution Approach 1:
The device is divided into separate functional components: a stable base structure with vertical poles, a detachable roller assembly with handles, and a weight system. This segmentation allows the roller to be mounted on a stable base rather than requiring the trainer to support it manually, eliminating shoulder strain while maintaining manufacturing simplicity.
Solution Approach 2:
A vertical pole acts as an intermediary structure between the base and the roller assembly. The pole provides stable support for the roller during exercise, transferring the weight-bearing function from the trainer's shoulders to the fixed base structure, thereby improving trainer comfort without complicating the overall device design.
2Device complexity
If traditional weight adjustment methods are used where weights are clipped onto a rope at the midpoint of the roller, then the device structure remains simple, but the weight adjustment is neither consistent nor sturdy
Solution Approach 1:
The invention uses a standardized weight plate design with consistent dimensions and attachment features. Multiple identical weight plates can be stacked and secured in a uniform manner, ensuring consistent weight distribution and reliable attachment to the roller system, eliminating the inconsistency of traditional rope-clip methods.
3Device complexity
If a forearm-and-wrist roller provides only one way of exercising muscles, then the device structure remains simple, but it lacks versatility for training different muscle groups used in arm-wrestling
Solution Approach 1:
The roller assembly is designed with multiple handles positioned at different locations and orientations. This allows the same basic structure to be used for various exercise techniques: gripping handles at different positions enables different muscle groups to be targeted, and handles can be gripped in different ways (palms up, palms down, neutral grip) to train various forearm and wrist muscles, all within a single unified device structure.
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
Enables stable, focused forearm and wrist training without shoulder strain, providing multiple exercise methods to target various muscle groups effectively.
Implementation Method 1
a first rope connecting the midpoint of the first horizontal bar and a weight assembly via a first fixed pulley; wherein, the first fixed pulley is mounted onto the second vertical pole
Implementation Method 2
when a tension in the first rope gets released, gravity drags the weight assembly down along the second vertical pole
Data Source
AI summary
The present disclosure teaches a multi-use strength training device for arm-wrestlers. The device may include a forearm-and-wrist roller mounted onto a pole. The roller includes a bar that may rotate about its central axis; a first pair of handles, which may be implemented by wrapping two pieces of textured material around the bar on each side of its midpoint; and a second pair of handles attached to each end of the bar, which are perpendicular to the bar. A rope connects the midpoint of the bar and a weight assembly via a pulley. The weight assembly may move along another pole. When a trainer turns the bar in either direction, the first rope may wrap around the bar and pull the weight assembly up. A trainer can also pull the weight assembly up via a grip or a handle connected to the weight assembly via another rope.