Bicycle for bed
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Solution Overview
Problem
Users with weak lower extremity muscle strength face challenges in maintaining proper posture while using a bed bike, leading to difficulties in effectively exercising their lower extremities due to outward or inward turning of the knees.
Innovation Solution
A bed bike equipped with a first fixing portion to hold the thigh and prevent outward turning, and a second fixing portion to support the lower leg and prevent inward turning, ensuring the knees remain aligned with the hip joint and ankle line during exercise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users with weak lower extremity muscle strength use a bed bike without additional support, then they can perform pedal exercises, but their knees turn outward or inward causing improper posture and ineffective exercise
Solution Approach 1:
The patent introduces fixing portions as intermediary elements between the user's lower extremities and the bed bike. These fixing portions include a thigh holder that contacts the thigh and a lower leg holder that contacts the lower leg, acting as mediators to maintain proper knee alignment during pedaling without requiring direct structural constraints on the knees themselves
2Stability of the object's composition
If fixing portions are added to hold the thigh and lower leg, then proper lower extremity posture is maintained, but the device structure becomes more complex
Solution Approach 1:
The fixing mechanism is segmented into distinct functional components: a thigh holder for the upper leg portion and a lower leg holder for the lower leg portion. Each segment is independently designed to address specific posture control needs, allowing for modular construction and easier adjustment while maintaining overall posture stability
Solution Approach 2:
The fixing portions utilize straps with fastening mechanisms that can conform to the user's leg contours. These flexible strap structures provide the necessary holding force while adapting to individual anatomical variations, reducing the need for rigid complex frameworks
Data Source
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AI summary
The present disclosure relates to a bed bike that maintains a lower extremity posture of a user with weak lower extremity muscles strength. An embodiment of the present disclosure disclosures a bed bike including a body including a rotating member; a first fixing portion, positioned on one side of the body and holding a thigh of a user so that a knee of the user does not spread outward more than a predetermined distance from a first line drawn straight from a hip joint to an ankle of the user; and a second fixing portion connected to the rotating member and supporting a lower leg of the user so that the knee of the user is not brought inward from the first line.