Rotatable Jogging Harness Frame Dynamics
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Solution Overview
Problem
Existing baby carriage systems for jogging or walking are hindered by rigid shaft configurations that can cause injury if the runner falls, restrict turning space, and hinder access to the occupant, due to their inflexible design.
Innovation Solution
A hands-free jogging harness assembly with a rotatable frame system that allows up to 180 degrees of side-to-side movement and up-and-down adjustment, featuring linking members and biasing members to absorb shock and maintain stability, enabling users to turn freely and access the carriage without disconnecting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid shaft configuration is used to connect the carriage to the runner, then structural stability is improved, but safety is worsened because the shaft can cause injury if the runner falls
Solution Approach 1:
The patent replaces the rigid shaft with a dynamic connection system comprising a harness worn by the runner and a rotatable connector that allows movement. The harness distributes forces across the runner's body and the rotatable connector enables the connection to adapt dynamically to the runner's movements and potential falls, eliminating the rigid constraint that caused injury
Solution Approach 2:
The connection system changes from a fixed rigid structure to a flexible system with rotational degrees of freedom. The rotatable connector allows angular movement parameters to change, transforming the connection from rigid to adaptable, which reduces harmful forces during unexpected movements or falls
2Stability of the object's composition
If a rigid shaft configuration is used to connect the carriage to the runner, then structural stability is improved, but turning capability is worsened due to restricted turning space
Solution Approach 1:
The rotatable connector introduces rotational dynamics to the connection system, allowing the carriage to turn freely without the rigid shaft constraint. This dynamic rotational capability enables the runner to navigate tight spaces and corners while maintaining structural connection to the carriage
3Stability of the object's composition
If a rigid shaft configuration is used to connect the carriage to the runner, then structural stability is improved, but accessibility to the occupant is worsened
Solution Approach 1:
The rotatable connector enables dynamic positioning of the carriage relative to the runner, allowing the runner to rotate and access the occupant from different angles. This rotational freedom provides accessibility to the occupant while maintaining the stable connection through the harness system
4Strength
If a rigid shaft configuration is used to connect the carriage to the runner, then connection strength is improved, but shock absorption is worsened causing jarring for the occupant
Solution Approach 1:
The harness and rotatable connector create a dynamic connection system that can absorb shocks through controlled movement and rotation. Instead of rigidly transmitting all forces to the occupant, the system allows energy dissipation through the harness material and rotational joints, reducing jarring effects
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
The harness assembly provides a safer and more ergonomic experience by allowing users to turn in tight spaces, access occupants, and absorb motion, reducing jarring for the occupant while maintaining stability and comfort during exercise.
Implementation Method 1
At least one rotatable member of the second frame provides side-to-side (e.g., right to left side of the user) movement or rotation
Implementation Method 2
A biasing member can be provided between the linking members. The biasing member can help to reduce sway while running, and can also help to maintain the linking members facing along a substantially straight line during use
Data Source
AI summary
A harness assembly for towing a carriage and or trailer is disclosed. An example harness assembly includes a first frame for connecting to the carriage or trailer, and a second frame connected at a first end portion to the first frame. The second frame also has a second end portion for connecting to a user. At least one rotatable member of the second frame provides side-to-side rotation of up to about 180 degrees between the user and the carriage or trailer. In an example, the first frame is rotatably attached to the second frame to provide for up-and-down movement between the first frame and the second frame, thereby adjusting to different height users and dissipating at least some of the motion from the user before the motion from the user reaches the carriage or trailer.