Dual-Axis Handle Assembly for High-Low Machine Grip Versatility
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Solution Overview
Problem
Conventional high-low machines have limited grip options, making it difficult to target diverse body areas for intensive exercise, and often require shared use in gyms, leading to space and time inefficiencies.
Innovation Solution
A high-low machine with first and second angle adjustment units on orthogonal axes allows users to adjust the handle to various angles, enabling customized single or two-arm motions, seat height adjustment, and knee support angles to target specific body areas for intensive exercise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional high-low machines are used, then the machine structure is simple, but the grip options are limited and cannot target diverse body areas
Solution Approach 1:
The handle assembly is divided into multiple independent components: a handle body, a first angle adjustment unit for adjusting the angle between the handle and connecting rod, and a second angle adjustment unit for adjusting the angle between the connecting rod and rotating portion. This segmentation allows each component to be adjusted independently, providing multiple grip options without requiring complete redesign of the entire machine structure.
Solution Approach 2:
The patent introduces dynamic adjustment capabilities through the first and second angle adjustment units, which allow users to change the angles of the handle and connecting rod during exercise. This transforms a static structure into a dynamic one that can adapt to different exercise requirements, targeting diverse body areas while maintaining structural integrity.
2Productivity
If multiple people use the same exercise machine, then space utilization improves, but waiting time increases when many people are present
Solution Approach 1:
The high-low machine is designed with multi-functional capabilities through the adjustable handle angles and seat height adjustment. A single machine can perform multiple exercise variations (different grip angles, single-arm or two-arm motions) that would traditionally require multiple specialized machines. This allows one machine to serve multiple users with different exercise needs, reducing both space requirements and waiting time.
3Adaptability or versatility
If the handle angle is fixed, then the machine structure is simple, but users cannot target specific body areas for intensive exercise
Solution Approach 1:
The handle adjustment mechanism is segmented into two independent angle adjustment units: the first angle adjustment unit controls the angle between the handle and connecting rod, while the second angle adjustment unit controls the angle between the connecting rod and rotating portion. This segmentation allows precise control over handle orientation to target specific muscle groups without requiring a completely complex redesign.
Solution Approach 2:
The patent implements parameter changes by allowing users to adjust the angles of the handle and connecting rod to specific values. These parameter adjustments (angles) enable targeting of different body areas while maintaining a relatively simple mechanical structure through standardized adjustment mechanisms.
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 users to perform customized exercises targeting specific body areas with adjustable handle angles, seat heights, and knee support, accommodating diverse user sizes and preferences, and allows for efficient use in limited spaces.
Implementation Method 1
when the external force applied by the user is released, the grip unit returns along the descending path by self-weight of the weight plate
Data Source
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AI summary
A high-low machine according to one embodiment of the present disclosure comprises: a support frame (110) placed on a floor; a main body frame (120) connected to the support frame (110) to form a support structure; a weight portion (130) which is rotatably mounted at one point of the main body frame (120) and on which a weight plate is mounted; a rotating portion (140) rotatably mounted at another point of the main body frame (120); a connecting portion (150) provided to connect the weight portion (130) and the rotating portion (140) to transfer load of the weight plate to the rotating portion (140), the connecting portion (150) being adjustable in length; a grip unit (160) connected to one end of the rotating portion (140) and providing a space for a user to grip; and a seating unit (170) connected to the support frame (110) and disposed in front of the main body frame (120) to provide a space for the user to sit. The grip unit (160) includes: a pair of handles (161) provided for the user to grip; a pair of first angle adjustment units (162) each provided at one end of each of the pair of handles (161) and configured to adjust the angle of the handle (161) with respect to a first axis; and a pair of second angle adjustment units (163) each provided to connect one end of each of the pair of first angle adjustment units (162) and one end of the rotation unit (140), and to adjust the angle of the handle (161) with respect to a second axis orthogonal to the first axis. When descending due to an external force applied by the user, the grip unit (160) descends in an arc motion, and when the external force applied by the user is released, the grip unit (160) returns along the descending path by self-weight of the weight plate.