Adjustable Torque Wrench Handle with Detachable Cell Cap
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Solution Overview
Problem
Conventional electronic torque wrenches have a fixed, non-adjustable handle made of plastic, which cannot accommodate users with different hand sizes and has a separate plastic cell cap that is prone to breakage, increasing the tool's length and volume.
Innovation Solution
The electronic torque wrench features a handle with a rear section that serves as both a cell cap and an adjustable component, allowing for adjustable length and volume, comprising a front and rear handle section with conductive members and cells, and an optional extension handle for customizable fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate plastic cell cap is used to close the cell room, then the cell room is sealed, but the wrench length and volume increase
Solution Approach 1:
The patent merges the cell cap function with the rear handle section into a single integrated component. The rear handle section serves dual purposes: as a structural handle for user grip and as the cell cap that seals the cell room. This integration eliminates the need for a separate cell cap, thereby reducing the overall length and volume of the wrench while maintaining proper cell room sealing.
2Reliability
If a separate plastic cell cap is used to close the cell room, then the cell room is sealed, but the cell cap is prone to breakage
Solution Approach 1:
The patent combines the cell cap function with the rear handle section, which is made of metal material. This metal rear handle section serves as both the structural handle and the cell cap. The metal material provides superior strength and durability compared to plastic, eliminating the breakage issue while maintaining the cell room sealing function.
3Ease of manufacture
If the handle is made of plastic by molding, then the handle is easy to manufacture, but the handle length cannot be adjusted
Solution Approach 1:
The patent divides the handle into multiple detachable sections: a front handle section and a rear handle section. The rear handle section can be selectively removed or attached, allowing users to adjust the effective handle length. This segmentation enables customization for different user needs while maintaining ease of manufacture through modular assembly.
Solution Approach 2:
The patent introduces a dynamic, adjustable handle configuration where the rear handle section can be detached. This transforms the handle from a fixed static structure to a flexible dynamic one that can adapt to different user requirements. The detachable design allows the handle length to vary based on user preference while keeping the manufacturing process simple through standardized components.
Data Source
AI summary
An electronic torque wrench includes: a shank body, a drive head being connected with a front end of the shank body; a handle having a front handle section and a rear handle section, the front handle section being connected with a rear end of the shank body, a cell room being formed in the front handle section for placing cells therein, a front end of the rear handle section being detachably connected with the rear end of the front handle section; an electronic operation/control device disposed on the shank body; and at least one torque sensor mounted on the shank body. The front and rear handle sections together form the handle for a user to hold. The rear handle section of the handle serves as a cell cap for closing the cell room so as to shorten the length of the wrench.