Integrated Umbrella Lower Hub Locking Handle for Pole Wear Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Large umbrellas face durability issues and operational challenges due to continuous outdoor use, requiring more robust and user-friendly features for moving between open and closed positions.
Innovation Solution
An umbrella assembly with an integrated handle portion and locking mechanism, featuring a lower hub assembly with a runner hub, hub controller, and a locking mechanism that includes an actuator and locking feature, allowing for easy transition between configurations using a support pole with locking fixtures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring-loaded flange (snib) is used to support the runner in small umbrellas, then the umbrella can be supported in the elevated position, but the mechanism lacks robustness and durability for continuous outdoor use
Solution Approach 1:
The patent employs a dynamic locking mechanism where the actuator moves between locked and unlocked positions, allowing the umbrella to be securely held in open position while maintaining the ability to transition to closed position. This dynamic system replaces static spring-loaded support with an active control mechanism that provides superior reliability for continuous outdoor use.
Solution Approach 2:
The locking mechanism is segmented into distinct components: the actuator, the locking feature, and the locking fixture. This segmentation allows each component to be optimized for its specific function while working together to provide robust support, improving overall durability without excessive complexity.
2Reliability
If a robust locking mechanism is implemented for large umbrellas to improve durability, then the umbrella can withstand continuous outdoor use, but the ease of operation may be reduced
Solution Approach 1:
The locking mechanism incorporates self-latching functionality where the actuator automatically engages with the locking fixture when the umbrella is in the open position, providing secure locking without requiring continuous user intervention. The mechanism serves itself by maintaining the locked state passively while remaining easily operable when needed.
Solution Approach 2:
The actuator serves as an intermediary element between the user's manual input and the locking feature. By providing a large gripping surface and clear actuation direction, the actuator mediates between simple user action and the robust locking requirement, making operation easy while maintaining durability.
3Ease of operation
If the runner is moved to an elevated position to open the struts and stretch the canopy, then the umbrella provides shade, but gravity causes the umbrella to collapse without support
Solution Approach 1:
The locking mechanism provides a counteracting force to gravity by mechanically engaging the actuator with the locking fixture. This engagement creates a counterbalancing force that holds the runner in the elevated open position, preventing gravitational collapse while maintaining operational convenience through simple lock/unlock action.
4Reliability
If the actuator is moved between positions to engage or disengage the locking feature, then the umbrella can be secured in the desired position, but frictional wear occurs on the support pole
Solution Approach 1:
The locking feature is extracted from direct contact with the support pole and instead engages with the actuator. This separation removes the source of frictional wear from the support pole surface, allowing the locking mechanism to provide secure positioning without causing progressive material loss through repeated engagement cycles.
Data Source
AI summary
An umbrella assembly includes a support pole having a locking fixture, a lower hub assembly movably coupled to the support pole, umbrella ribs extending from the lower hub assembly, and a canopy extending over the umbrella ribs. The lower hub assembly can be moved along the support pole to move the umbrella assembly between open and closed configurations. The lower hub assembly includes a runner hub and a hub controller. The hub controller includes an upper portion, a handle portion, and a locking mechanism integrated into the handle portion. The locking mechanism includes an actuator, a locking feature coupled to the actuator, and a spring configured to bias the actuator towards the support pole. The actuator is moveable between a first position in which the locking feature is engaged with the locking fixture and a second position in which the locking feature is disengaged from the locking fixture.