Pivoting Screwdriver Handle With Integrated Axle Mechanism
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Solution Overview
Problem
Existing screwdriver handles with angle-adjustable mechanisms often result in user hand impingement, increased length, and aesthetic and functional issues due to exposed coupling areas, leading to dust accumulation and inefficient storage.
Innovation Solution
A screwdriver handle design featuring a first and second handle part with a pivotal connection, utilizing an axle and positioning members with elastic biasing and a control member for smooth angle adjustment, maintaining a compact size and preventing dust accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the handle is made sufficiently long to allow easy gripping, then gripping comfort is improved, but the overall length of the screwdriver increases requiring larger storage space
Solution Approach 1:
The handle is divided into a first handle part and a second handle part that can pivot relative to each other. The first handle part provides the main gripping portion while the second handle part can be positioned to assist with torque application or control, allowing the gripping function to be distributed across segments rather than requiring a single long handle.
Solution Approach 2:
The handle incorporates a pivotal connection between the first and second handle parts, allowing dynamic adjustment of the handle configuration. The second handle part can pivot between different positions to adapt to different operating conditions, providing flexibility without requiring a permanently long handle structure.
2Adaptability or versatility
If the coupler is made angle-adjustable to improve accessibility, then operational versatility is improved, but the user's hand might be impinged by the coupling area
Solution Approach 1:
The coupling mechanism is designed to operate in a different spatial dimension relative to the handle axis. The second handle part pivots in a plane that separates the coupling area from the user's hand path, allowing angular adjustment without creating impingement zones in the hand's natural gripping area.
Solution Approach 2:
The pivotal connection acts as an intermediary mechanism that decouples the angular adjustment function from the hand-contact areas. By introducing this intermediate pivot point, the coupling area can move independently through a range of angles without directly interfering with the user's hand position during gripping.
3Adaptability or versatility
If the lugs and extension are exposed to allow coupling mechanism operation, then adjustability is improved, but dust and dirt accumulate in the recessed portions
Solution Approach 1:
The coupling mechanism components are integrated into the handle structure such that the functional elements are combined with the handle body rather than being separate exposed components. This merging reduces the number of distinct recessed portions where dust could accumulate while maintaining the necessary adjustability functionality.
Solution Approach 2:
The handle structure serves multiple functions simultaneously - it provides the gripping surface, houses the coupling mechanism, and acts as a protective enclosure. This multi-functionality allows the same structural elements to perform both the coupling adjustment function and the dust protection function, eliminating the need for separate exposed lugs and extensions.
4Adaptability or versatility
If the coupling mechanism is made complex to achieve angle adjustment, then versatility is improved, but the manufacturing process becomes time-consuming and costly
Solution Approach 1:
The angle adjustment functionality is extracted as a separate pivotal connection mechanism rather than being integrated into the entire handle structure. This extraction allows the pivot mechanism to be manufactured and assembled as a discrete component, simplifying the overall manufacturing process while maintaining the angle adjustment capability.
Solution Approach 2:
The handle design incorporates a simple pivotal connection that allows dynamic reconfiguration without requiring complex mechanical linkages. The dynamic pivot mechanism provides angle adjustment through a straightforward hinge-like connection rather than through multiple interconnected components, reducing manufacturing complexity.
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
Enables comfortable gripping and aesthetically pleasing appearance while allowing easy switching between in-line and angled states without user hand impingement, reducing dust accumulation and storage space requirements.
Implementation Method 1
Two elastic elements are respectively mounted in the receptacles for respectively biasing the positioning members outward
Data Source
AI summary
A screwdriver handle includes a first handle part and a second handle part. An axle is formed on an end face of the first handle part and includes two receptacles each receiving a positioning member. The second handle part includes an end face pivotally connected to the end face of the first handle part and having a groove for receiving the axle. A positioning hole extends from a wall defining the groove through an outer periphery of the second handle part. One of the positioning members is biased into a retaining section of the positioning hole to position the second handle part. A control member is mounted in the positioning hole and movable to urge the positioning member in the receptacle aligned with the positioning hole into the receptacle, allowing the screwdriver handle to be switchable between an in-line state and an angled state.