Rotary Luggage Grip Assembly With Spring Return and Balance Lock
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Solution Overview
Problem
Existing luggage handle grips require loose hand positioning to prevent friction and injury, leading to imbalance and increased effort during use, especially on uneven surfaces.
Innovation Solution
A rotation-controllable rotary grip assembly with a shaft, barrel-like grip, spiral torsion spring, and locking mechanism that allows the grip to rotate and return to a balanced position, ensuring smooth pulling with reduced effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the hand is kept in a loosened status to prevent friction and injury, then the hand is protected from friction and injury, but the grip becomes unbalanced and requires increased effort to pull
Solution Approach 1:
The grip assembly is designed to dynamically adjust its orientation relative to the handle shaft. The grip can rotate freely about the longitudinal axis to align with the user's hand position, and the elastic means enable automatic return to a balanced position. This dynamic capability allows the hand to maintain a relaxed grip while the grip structure adapts to prevent imbalance during pulling operations.
Solution Approach 2:
The grip assembly changes its angular orientation parameter relative to the handle shaft through rotational movement. The elastic means provide a restoring force that changes the grip's position from a rotated state back to a balanced state. This parameter change enables the grip to accommodate different hand positions while maintaining balance during pulling.
2Adaptability or versatility
If the grip is allowed to rotate freely to adapt to hand position, then the grip adapts to user hand orientation, but the grip deviates from its balanced position affecting pulling action
Solution Approach 1:
The grip assembly incorporates rotational freedom about the longitudinal axis, allowing it to dynamically adapt to different hand positions. Simultaneously, the elastic means provide a restoring mechanism that automatically returns the grip to its balanced position, creating a dynamic system that balances adaptability with stability.
Solution Approach 2:
The elastic means function as a feedback mechanism that detects when the grip is rotated from its balanced position and applies a restoring force to return it to the correct orientation. This feedback loop ensures that while the grip can rotate to adapt to hand position, it automatically corrects itself to maintain pulling balance.
3Stability of the object's composition
If the grip is locked in a fixed position to maintain balance, then the grip remains stable during pulling, but the user cannot easily adjust to different hand positions
Solution Approach 1:
The grip assembly transitions from a fixed locked position to a dynamic adjustable position. The user can rotate the grip about the longitudinal axis to adapt to different hand orientations, and the elastic means enable controlled movement while maintaining the ability to lock in balanced positions during pulling operations.
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 grip remains balanced during rotation, reducing user effort and preventing deviation, thus enhancing comfort and ease of handling luggage on various surfaces.
Implementation Method 1
a spiral torsion spring sleeved onto said shaft and connected between the shaft and the grip for reversing the grip after each rotary motion of the grip relative to the shaft
Data Source
AI summary
A rotation-controllable rotary grip assembly includes a shaft affixed to a retractable handle of a luggage, a barrel-like grip sleeved onto and turntable about the shaft, a spring member sleeved onto one extension rod at one end of the shaft and connected between the shaft and the grip for returning the grip to its former position after a rotary motion of the grip relative to the shaft, and a lock for locking the grip to the shaft to prohibit rotation of the grip relative to the shaft.