Bed Bike Posture Fixing for Weak Lower Extremity Muscle Strength
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Solution Overview
Problem
Users with weak lower extremity muscle strength face difficulty in maintaining proper posture while using a bed bike, leading to ineffective exercise due to knees turning outward or inward, which impedes the improvement of muscle strength.
Innovation Solution
A bed bike equipped with a first fixing portion to hold the thigh and prevent the knee from spreading outward and a second fixing portion to support the lower leg, ensuring the knee remains aligned with the hip joint and ankle, thereby maintaining the correct posture for effective muscle exertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a bed bike is used for lower extremity exercise, then muscle strength improvement is achieved, but proper lower extremity posture cannot be maintained due to weak muscle strength
Solution Approach 1:
The patent introduces fixing portions as intermediary devices that mediate between the user's weak lower extremities and the bed bike pedals. These fixing portions include thigh holders and lower leg holders that mechanically support the limbs, allowing users with insufficient muscle strength to maintain proper posture while exercising.
Solution Approach 2:
The patent divides the lower extremity support system into multiple independent fixing portions: a first fixing portion for the thigh, a second fixing portion for the lower leg, and a third fixing portion for the foot. This segmentation allows each part to be independently adjusted and optimized for proper alignment, enabling posture maintenance without requiring overall limb strength.
2Stability of the object's composition
If fixing portions are added to maintain posture, then knee alignment is improved, but device complexity increases
Solution Approach 1:
The fixing portions are designed to serve multiple functions simultaneously: the thigh holder not only supports the thigh but also helps align the knee, while the lower leg holder provides both support and positioning. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while achieving stable knee alignment.
Data Source
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.