Pivoting Bicycle Frame for Dynamic Motion Simulation
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Solution Overview
Problem
Current stationary bicycle designs fail to accurately simulate the dynamic forces and muscle engagement of actual cycling, leading to inadequate training for cyclists, as they limit movement to only pedaling and do not effectively engage core and balance muscles, making them undesirable for enthusiasts and competitors.
Innovation Solution
A bicycling exercise apparatus with a frame that pivots about two mounting points, allowing users to lean and steer by applying forces at the handlebars, pedals, and seat, simulating the motion of a conventional bicycle through a combination of elastomer springs and pivot ball joints, enabling off-axis tilting and rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional stationary bicycle design with fixed handlebars, pedals, and seat on a rigid platform is used, then the device structure is simple and stable, but it fails to simulate dynamic forces and engage core and balance muscles
Solution Approach 1:
The patent applies the dynamics principle by transforming the rigid, fixed structure into a dynamic system with multiple degrees of freedom. The bicycle frame is suspended from two mounting points that allow independent rotation, enabling the frame to tilt and rotate in response to user forces. This dynamic configuration allows the device to simulate the dynamic forces and muscle engagement of actual cycling while maintaining structural simplicity through the use of passive mechanical elements.
2Adaptability or versatility
If the bicycle frame is suspended from two mounting points allowing independent rotation, then dynamic forces and muscle engagement are simulated, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the mounting mechanism into two independent mounting points instead of a single rigid connection. Each mounting point is located at different positions on the bicycle frame (one near the head tube, one near the seat post) and allows independent rotation. This segmentation enables complex frame movements while keeping each individual mounting mechanism relatively simple and manageable.
Solution Approach 2:
The patent uses the two mounting points as intermediaries between the fixed support structure and the bicycle frame. These mounting points mediate the forces applied by the user, allowing the frame to rotate and tilt in response to pedaling, steering, and balancing forces while transferring these forces to the fixed support structure. This intermediary mechanism enables movement simulation without requiring a completely complex active control system.
3Ease of operation
If fixed posture riding is used, then the device structure is simple, but nerve numbing and discomfort occur due to constant seat contact pressure
Solution Approach 1:
The dynamic frame suspension allows the bicycle frame to tilt and rotate in response to user movements, creating varying seat contact pressures throughout the exercise session. This dynamic adjustment of posture automatically relieves pressure on specific body areas, preventing nerve numbing and discomfort without requiring active user intervention or complex control systems.
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
This design provides a more realistic cycling experience, engaging a broader range of muscle groups and allowing users to simulate turning, leaning, and balancing, thus offering a more effective workout than traditional stationary bikes.
Implementation Method 1
The combination of elastomer springs and pivot ball joints, enabling off-axis tilting and rotation
Implementation Method 2
The combination of elastomer springs and pivot ball joints, enabling off-axis tilting and rotation
Data Source
AI summary
An apparatus permitting a user to perform a simulated bicycling exercise is provided. The design includes a frame having a head tube, a first upper rear mounting point and a second lower front mounting point configured to maintain the frame, a seat connected to said frame and configured to support the user in a forward facing orientation, a wheel positioned in association with said frame and pedals configured to interact with said wheel, and a stem connected to a handlebar arrangement, the stem passing through the headset collar and connected to a base by a connection arrangement comprising an arm. The frame is configured to pivot about the first upper rear mounting point and second lower front mounting point in response to leaning by the user, causing rotation of the stem within the head tube by movement of the connection arrangement comprising the arm.