Adjustable Center of Gravity Handle for Assembly Tools
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Solution Overview
Problem
Existing handheld tool handles are often rigid and not adjustable, leading to user discomfort, hand fatigue, and potential accidents due to inappropriate center of gravity, and are cumbersome to replace or adjust.
Innovation Solution
A handle assembly with a tongue piece, first and second plates, and a tube, featuring through holes, buckles, slots, and a locking mechanism that allows for adjustable weight units to be inserted, enabling users to customize the center of gravity by adjusting the weight distribution within the tool handle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the tool handle is integrally formed, then the structure is simple and durable, but it cannot be adjusted or replaced and is cumbersome to modify
Solution Approach 1:
The handle is divided into multiple components: a handle body, a weight adjustment mechanism with movable weights, and a locking mechanism. This segmentation allows the center of gravity to be adjusted by moving weights along the handle while maintaining overall structural integrity and durability.
Solution Approach 2:
The handle incorporates a dynamic weight adjustment system where weights can be moved to different positions along the handle and locked in place. This dynamic capability allows users to adjust the center of gravity according to different operational requirements while maintaining structural stability when locked.
2Adaptability or versatility
If the handle uses a replaceable design, then it can be adjusted and replaced, but the structure becomes complex with many parts and cumbersome replacement steps
Solution Approach 1:
The handle is segmented into modular components including the handle body, weight adjustment mechanism, and locking system. This modular design enables easy replacement of individual components without requiring replacement of the entire handle assembly.
Solution Approach 2:
The handle design incorporates a universal locking mechanism that can secure weights at multiple positions and also serves as the primary structural connection point. This multi-functional approach reduces the number of separate parts needed while maintaining replaceability and adjustability.
3Ease of operation
If the center of gravity is fixed, then the structure is simple, but it causes hand fatigue and discomfort for long-term use
Solution Approach 1:
The handle incorporates a dynamic weight positioning system that allows the center of gravity to be adjusted to different locations along the handle. Users can move weights to optimize the center of gravity for their specific task and hand size, thereby improving ergonomic comfort during extended use.
Solution Approach 2:
The handle features localized weight adjustment capability where weights can be positioned at specific locations along the handle to precisely control the center of gravity. This local quality adjustment allows fine-tuning of ergonomic properties without requiring complete redesign of the entire handle structure.
4Reliability
If the handle parts are not durable, then they can be easily replaced, but they become loose due to long-term use and affect work efficiency
Solution Approach 1:
The handle is designed with segmented components connected through robust locking mechanisms. This segmentation allows individual parts to be replaced if worn while the overall structure maintains durability through the strong connections between segments.
Solution Approach 2:
The handle incorporates a locking mechanism that prevents loosening of components during long-term use. This prior cushioning approach anticipates the potential for loosening and provides a mechanical solution to maintain tight connections, ensuring durability while allowing replacement when needed.
Data Source
AI summary
A handle of assembly tool with an adjustable center of gravity includes a tongue piece and a tube that are connected to a functional part in the tool. A through hole is formed in the tongue piece. First and second plates are arranged on the tongue piece. The first plate is provided with a first buckle, a first slot, a first fixing hole and a first groove; the second plate is provided with a second buckle, a second slot, a second fixing hole and a second groove; a fixing part is formed in the first and second slots; a locking part is formed in the first and second grooves; the tube is connected with the first and second fixing plates, and a gasket is formed at the other end of the tube with a locking rod passed through; a weight unit is connected with the locking rod.