Expandable Handle Tool Bolt Leverage
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Solution Overview
Problem
Existing threaded fasteners, such as screws and bolts, lack sufficient leverage and torque for effective tightening and loosening, especially when space is limited or obstructions are present, and their rigid construction restricts their application in certain scenarios like clamp connections.
Innovation Solution
A self-contained tool bolt with an expandable handle section that can be laterally extended for increased torque and leverage, featuring a slideable bolt section on a shaft to elevate the handle for clearance from obstructions, allowing for enhanced tightening and loosening capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If traditional rigid threaded fasteners are used, then structural integrity is maintained, but tightening and loosening capabilities are limited due to insufficient leverage and torque
Solution Approach 1:
The fastener is divided into distinct functional segments: a head section containing an expandable handle mechanism, a shaft section, and a threaded bolt section. This segmentation allows the handle to be expanded independently to provide additional leverage while keeping the threaded fastening portion simple and rigid.
Solution Approach 2:
The handle section transitions from a static, compact state to a dynamic, expanded state during operation. The handle can be laterally extended outward from the head section to provide enhanced leverage for tightening and loosening, then retracted when not needed, making the increased capability available only when required.
2Ease of operation
If finger grasping components are added to allow tool-free operation, then ease of operation improves, but the fastener creates cumbersome and dangerous projections
Solution Approach 1:
The handle section is nested within the head section when not in use, with the handle laterally extended outward from the head. This nesting arrangement allows the handle to be stored compactly within the head's boundaries, eliminating protruding elements that could create safety hazards or interfere with other components.
3Force
If clips or rings are added to provide leverage, then tightening capability improves, but the fastener cannot be used in certain applications like clamp connections
Solution Approach 1:
The expandable handle integrated into the head section provides a universal solution that works across multiple application types. By incorporating the leverage mechanism directly into the head rather than adding external clips or rings, the fastener maintains a clean profile suitable for clamp connections and other applications where external attachments would be problematic.
4Ease of operation
If the handle is elevated to provide clearance from obstructions, then ease of operation in constrained spaces improves, but the overall height of the fastener increases
Solution Approach 1:
The handle section is designed to be laterally extendable rather than permanently elevated. It extends outward from the head section horizontally to provide clearance from obstructions during operation, then can be retracted when not needed, avoiding a permanent increase in the fastener's overall height profile.
Data Source
AI summary
A self-contained tool bolt has a head section comprising a top member and a handle section which is expandable from a stored position to a laterally outward, cantilevered position relative to the top member, to provide enhanced tightening and loosening capability of the tool bolt. The tool bolt also comprises a rigid shaft extending from the top member and a bolt section, with external threads, slideably mounted and moveable along the shaft. When the bolt section is at its lowest point on the shaft, the handle section is elevated to provide clearance from obstructions during tightening and loosening of the tool bolt.