Power Tool Locking Unit Electronics Control
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Solution Overview
Problem
Existing machine tool devices for hand-held power tools, such as rotary and chisel hammers, face challenges in efficiently controlling and regulating drive units due to complex mechanics between locking and signal switching elements, leading to mechanical load and cost inefficiencies.
Innovation Solution
Incorporating an electronics unit that evaluates position parameters of locking and signal switching elements to control and regulate drive units, eliminating the need for complex mechanics by using electrical signals to manage locking and operating modes, and integrating a bistable locking mechanism for safe and durable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex mechanics are used between locking and signal switching elements, then locking function is achieved, but mechanical load increases and durability decreases
Solution Approach 1:
The patent replaces complex mechanical locking mechanisms with an electronic control system. The electronics unit receives signals from the signal switching element and locking actuation element, then electronically controls the drive unit's operation and locking state, eliminating the need for complex mechanical linkages between these components.
Solution Approach 2:
The electronics unit serves as an intermediary between the signal switching element, locking actuation element, and drive unit. It processes signals from the switching elements and translates them into appropriate control actions for the drive unit, decoupling the mechanical components from direct mechanical interdependence.
2Reliability
If complex mechanics are used between locking and signal switching elements, then locking function is achieved, but manufacturing cost increases
Solution Approach 1:
The patent replaces complex mechanical locking mechanisms with an electronic control system. The electronics unit receives signals from the signal switching element and locking actuation element, then electronically controls the drive unit's operation and locking state, eliminating the need for complex mechanical linkages between these components.
3Volume of moving object
If locking actuation element is integrated with signal switching element, then space is saved, but ease of operation decreases
Solution Approach 1:
The patent segments the control interface into separate functional elements: the signal switching element for activating the drive unit and the locking actuation element for locking the signal switching element. While physically integrated on the housing, these are distinct operational components that can be independently actuated, maintaining ease of operation while saving space.
Data Source
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AI summary
The invention proceeds from a power tool device, in particular for portable power tools, having at least one signal switching unit (12) that has at least one signal switching element (14) that is actuable at least in order to activate a drive unit (16) of the power tool (18), having at least one operating mode selection unit (20) that has at least one operating mode selection element (22) that is actuable in order to select an operating mode of the drive unit (16), and having at least one locking unit (24) that has at least one locking actuating element (26) at least for locking the signal switching element (14). It is proposed that the power tool device (10) comprise at least one electronic unit (28) that is provided for controlling and/or regulating the drive unit (16) at least depending on an evaluation of a setting parameter of the locking actuating element (26).