Extendable Dual Handle Shaft With Nested Adjustable Second Grip
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Solution Overview
Problem
Existing devices with multiple grips, such as umbrellas, lack the ability to adjustably position the second grasping handle relative to the first, limiting their usability for users of different heights, and often require complex mechanisms for handle deployment and storage.
Innovation Solution
An extendable dual handle system with a second grasping handle that can be adjustably positioned relative to the first, featuring a snap locking mechanism and a biasing member to facilitate easy deployment and storage, allowing the second handle to be partially or fully within the first handle, and incorporating a twist locking mechanism for secure positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a second grasping handle is provided at a fixed distance from the first handle, then users of different heights can use the device, but the device complexity increases and storage becomes cumbersome
Solution Approach 1:
The second grasping handle is made movable along the shaft rather than being fixed, allowing it to be positioned at different distances from the first handle. This dynamic positioning enables adaptation to different user heights while maintaining a compact form when not in use, resolving the contradiction between versatility and device complexity.
Solution Approach 2:
The second grasping handle can be positioned to nest within or alongside the first handle when not in use, creating a compact storage configuration. This nesting approach allows the device to maintain simplicity during storage while providing extended functionality when needed.
2Adaptability or versatility
If the second grasping handle is made adjustable to any position, then adaptability for different users is improved, but the device complexity and difficulty of operation increase
Solution Approach 1:
The shaft is pre-configured with multiple discrete positioning locations for the second grasping handle. These pre-established positions allow users to quickly snap the handle into place without complex adjustment mechanisms, maintaining ease of operation while providing adaptable positioning for different user heights.
3Reliability
If a complex mechanism is used to deploy and retract the second handle, then secure positioning is achieved, but the ease of operation and simplicity are reduced
Solution Approach 1:
The positioning mechanism is segmented into discrete, pre-determined locations along the shaft rather than requiring continuous adjustment. This segmentation allows for secure positioning at each location while simplifying the overall deployment mechanism, as the handle only needs to snap into one of several predetermined positions rather than requiring complex locking mechanisms for continuous positioning.
Data Source
AI summary
A device that includes an elongated member, a first grasping handle associated therewith for holding or manipulation of the device, a second grasping handle and extension member that is operatively associated with the elongated member. The extension member is capable of adjustably and fixedly positioning the second grasping handle in any one of a number of fixed positions spaced a distance away from the first grasping handle, including an inoperative position and a number of operative positions. When the second grasping handle is in an operative position, a first user can grasp the first grasping handle and a second user can grasp the second grasping handle. The second grasping handle when in the inoperative position is temporarily attached to or located at least partially or fully within the first grasping handle such that no internal components of the handles are exposed and a continuous grasping surface is provided.