Anti-Rotation Locking for Hand-Held Power Tool Auxiliary Device
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Solution Overview
Problem
Existing auxiliary devices for hand-held power tools require two tools to achieve the necessary torque for opening or closing a tool fitting, making the process cumbersome and requiring separate tools for adjustment and operation.
Innovation Solution
An anti-rotation locking device is integrated into the drive train, allowing for single-tool operation and adjustable insertion depth, combined with a belt drive coupling and a protective housing that includes a workpiece-supporting device for enhanced accessibility and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a tool fitting is rotated to open or close using conventional methods, then the tool fitting can be opened or closed, but two separate tools are required to achieve the necessary torque
Solution Approach 1:
The patent combines two separate tools into a single integrated tool that performs both functions: one component provides the driving torque while the other simultaneously provides the counter-torque. This merging eliminates the need for a second tool and simplifies the operation to a single-handed process.
Solution Approach 2:
The patent introduces a vertical dimension by stacking the drive train and counter-torque generation components one above the other. The drive train is positioned vertically above the bearing surface, and the counter-torque mechanism is integrated into this vertical arrangement, allowing both functions to coexist in a compact space without requiring horizontal separation of tools.
2Adaptability or versatility
If the drive train is positioned to provide accessibility to difficult-to-reach working regions, then the tool can reach inaccessible areas, but the drive train may be exposed to external influences and hazards
Solution Approach 1:
The patent introduces a protective housing that encloses the drive train components. This housing acts as a protective shell that shields the drive train from external influences such as contamination and physical damage, while still allowing the tool to reach difficult-to-access working regions through the auxiliary device's extended positioning.
3Ease of operation
If rapidly-rotating parts of the drive train are exposed for operation, then the tool can be operated effectively, but hazards arise from the rotating parts
Solution Approach 1:
The protective housing encloses the rapidly-rotating parts of the drive train, preventing direct contact with the operator and eliminating safety hazards. The housing is designed to allow effective operation while maintaining protection, thus resolving the contradiction between operational effectiveness and safety.
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
The solution simplifies the operation of hand-held power tools by eliminating the need for a second tool, providing adjustable torque, and ensuring safe and reliable operation with enhanced accessibility and protection against hazards.
Implementation Method 1
the coupling device is designed as a belt drive. By designing the belt as a toothed belt that meshes with the toothed belt pulleys, the torque of the motor-operated, hand-held power tool can be transferred to the drive train in a defined manner.
Data Source
AI summary
The invention relates to an auxiliary device for a portable tool, comprising a receptacle (2) for a motor-operated portable tool (22) having an output shaft (26), and comprising a drive train (9) which has a tool receptacle (8), to be opened and closed by rotation, and which can be connected to the output shaft (26) of the motor-operated portable tool (22) via a coupling device. Provision is made for the auxiliary device (1) for the portable tool to have an anti-rotation locking means (13) acting on the drive train (9).