Vertical pulldown machine
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Solution Overview
Problem
Conventional pulldown machines have inefficiencies due to a grip unit that curves during exercise, reducing effectiveness, and there is a need for equipment that allows various exercises without occupying large space, accommodating different body sizes, and enabling targeted muscle engagement.
Innovation Solution
A vertical pulldown machine with a rotating grip unit that moves in a straight line above the user's head, adjustable handle angles, seat height, and customizable arm motions, along with adjustable knee and chest support units to accommodate various users and target specific muscle groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the grip unit is fixed in position, then the structure is simple, but exercise effectiveness is reduced due to curved grip path
Solution Approach 1:
The grip unit is designed to rotate around a vertical axis passing through the user's head, transforming from a fixed static structure to a dynamic rotating mechanism. This rotation enables the grip unit to move in a straight vertical line rather than following a curved path, directly improving exercise effectiveness while adding rotational movement capability to the structure
2Adaptability or versatility
If the machine is designed for specific body sizes, then the structure is simplified, but adaptability to various users is reduced
Solution Approach 1:
The seat unit incorporates height adjustability allowing vertical movement to accommodate different user statures. The knee support unit includes angle adjustment capability to adapt to various leg lengths and body proportions. These dynamic adjustment features enable the machine to adapt to diverse user body sizes without requiring multiple specialized equipment pieces
Solution Approach 2:
The machine allows modification of key dimensional parameters including seat height, knee support angle, and grip unit rotation radius. By enabling users to adjust these parameters according to their body measurements, the equipment achieves versatility across different user sizes while maintaining a unified base structure
3Productivity
If the grip unit rotates in a straight line above the head, then exercise effectiveness is improved, but the device complexity increases
Solution Approach 1:
The rotating mechanism enables the grip unit to move dynamically in a straight vertical line above the user's head, creating an optimal exercise trajectory. This rotational movement allows the grip unit to maintain proper alignment with the user's center of gravity throughout the exercise motion, significantly improving workout efficiency compared to fixed or curved grip paths
Solution Approach 2:
The rotating grip unit mechanism serves multiple functions: it enables straight-line rotation for optimal exercise mechanics, allows adjustment of rotation radius to accommodate different user heights, and can be combined with the adjustable seat and knee support to create customized exercise configurations for various body types
Data Source
AI summary
A vertical pulldown machine includes: a support frame seated on a floor surface; a body frame connected to the support frame to form a support structure; a pair of weight units rotatably mounted on the body frame and mounted with a weight plate; a pair of rotating units rotatably mounted on the body frame and provided to rotate respectively at a preset distance apart; a pair of connection units provided to connect the weight unit and the rotating unit to transfer a load of the weight plate to the rotating unit and to enable length adjustment; a pair of grip units connected to one end of each of the pair of rotating units and providing a space for a user to grip; and a sitting unit connected to the support frame and disposed in front of the body frame to provide a seat unit for the user to sit.