Motorized Leg Stretcher with Adjustable Support Plate
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Solution Overview
Problem
Existing leg stretching devices lack portability, adjustability, and effectiveness in accommodating various body types and muscle stretching needs, particularly for hamstring and calf muscles, limiting their versatility and efficacy in home and clinical settings.
Innovation Solution
A leg stretching device with a base frame, adjustable support plate, hinged leg tube, actuation assembly, and foam support rollers, allowing for customizable positioning and controlled motorized elevation to stretch multiple muscle groups, including hamstrings and calf muscles, with a portable and free-standing design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing leg stretching devices are used, then basic stretching function is provided, but portability and adjustability are insufficient
Solution Approach 1:
The device is divided into multiple adjustable segments including the leg tube with foam support rollers, support plate with lumbar pad, and actuation assembly. Each segment can be independently adjusted to accommodate different body types and stretching needs, providing high adaptability without excessive complexity.
Solution Approach 2:
The support plate is adjustably coupled to the base frame, allowing dynamic repositioning to accommodate various user heights and stretching requirements. The leg tube can also be adjusted along the base frame, providing adaptability while maintaining a relatively simple overall structure.
2Reliability
If manual stretching methods are used, then simplicity is maintained, but effectiveness and control are limited
Solution Approach 1:
The manual mechanical adjustment system is replaced with an actuator motor that provides controlled, reliable stretching motion. The motorized actuation assembly ensures consistent and effective stretching while maintaining relatively simple device architecture through automated control.
Solution Approach 2:
The actuator motor automatically performs the stretching action without requiring manual intervention during the stretching process. The device serves itself by providing controlled motion through the actuation assembly, improving reliability while keeping the operational complexity low.
3Adaptability or versatility
If fixed positioning devices are used, then structural simplicity is maintained, but accommodation of various body types is poor
Solution Approach 1:
The device incorporates universal adjustment capabilities through the adjustably coupled support plate and repositionable leg tube with foam support rollers. These components can accommodate various body types and stretching positions, providing multi-functionality without significantly increasing device complexity.
Solution Approach 2:
The device allows parameter changes in positioning through adjustable support plate locations and repositionable leg tube sections. These parameter adjustments enable accommodation of different body types while maintaining a relatively simple overall device structure through standardized adjustment mechanisms.
Data Source
AI summary
A leg stretching device includes a base frame, a support plate adjustably coupled to the base frame, a leg tube including a proximal end hingedly connected to the base frame and a distal end, a foot plate disposed at the distal end of the leg tube, and an actuation assembly including an actuation tube hingedly connected to the base frame and an actuation bar slidably disposed within the actuation tube and hingedly connected to the leg tube. The actuation assembly includes an actuator motor for moving the actuation bar relative to the actuation tube to reposition the leg tube relative to the base frame.