Rotational Joint Supination Exercise Device
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Solution Overview
Problem
Existing workout devices for pulling exercises, such as pull-ups and lat pull-downs, restrict wrist motion to a fixed position, limiting dynamic movement and muscle engagement.
Innovation Solution
A handheld exercise device with a rotational joint connecting an attachment body to a gripping body, allowing users to supinate their wrists during pulling exercises, featuring a hook-like attachment body and a U-shaped gripping body, suitable for attachment to various bar shapes and equipped with friction means for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a stationary or fixed position grip is used during pull-up exercises, then the exercise structure is simple and stable, but wrist motion is restricted and dynamic movement is limited
Solution Approach 1:
The patent applies the dynamics principle by replacing the stationary grip with a rotational joint mechanism that allows the gripping body to rotate relative to the attachment body. This enables the wrist to move dynamically through a full range of motion during pulling exercises, transforming the fixed structure into a dynamic one that adapts to the user's movement needs while maintaining structural simplicity through the use of a single rotational degree of freedom
2Adaptability or versatility
If a rotational joint is added to allow wrist supination, then dynamic motion and muscle engagement are improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the device into two distinct functional bodies: the attachment body that connects to the bar and the gripping body that the user holds. The rotational joint serves as the interface between these segments, allowing independent movement of the gripping body while keeping the attachment body stable. This segmentation enables versatile wrist motion without requiring a complex multi-joint mechanism
Solution Approach 2:
The rotational joint mechanism serves multiple functions: it allows wrist supination, accommodates different pulling exercise types (pull-ups, lat pull-downs, rows), and works with various bar shapes through the attachment body's universal gripping capability. This multi-functionality achieves high adaptability without proportionally increasing device complexity
3Adaptability or versatility
If the attachment body is designed to grip various bar shapes, then versatility is improved, but manufacturing precision requirements increase
Solution Approach 1:
The attachment body is designed with a universal W-shaped gripping mechanism that can accommodate straight, W-shaped, curved, and V-shaped bars through a single standardized interface. This universal design achieves compatibility with various bar shapes without requiring multiple specialized attachment geometries, thereby maintaining reasonable manufacturing precision requirements while maximizing versatility
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 a full range of wrist motion, engaging different muscle groups and improving exercise dynamics while maintaining stability and ease of mass production.
Implementation Method 1
The attachment body and the gripping body are connected together by a rotational joint that allows them to rotate relative to one another
Implementation Method 2
the attachment body further includes a friction means for contacting a rigid bar to minimize relative motion between the attachment body and the rigid bar during use of the device
Data Source
AI summary
An exercise device (40) includes an attachment body (44) for attaching the device (40) to a rigid bar (48) or an attachment means (58) on one end of a weighted cable. The device (40) further includes a gripping body (52) for being gripped by a user and which is connected to the attachment body (44) by a rotational joint (56). The attachment body (44) and the gripping body (52) are configured to permit a user to supinate the user's wrist during a pulling exercise.