Power Tool Gearbox Actuation for Direct Multi-Gear Switching
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Solution Overview
Problem
Manual machine tools require complex actuating devices to individually control switching gear elements, leading to cumbersome operation and increased complexity.
Innovation Solution
The actuating part is mounted on a carrier ring, allowing for linear displacement and pivot movement, enabling simultaneous adjustment of both switching gear elements without the need for additional support, using a single coupling element and spring arrangement for positive locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a complex actuating device is used to individually control switching gear elements, then the switching function is achieved, but the device complexity and ease of operation deteriorate
Solution Approach 1:
The patent combines the control of multiple switching gear elements into a single actuating device. The actuating part simultaneously adjusts both the first and second switching gear elements through integrated mechanical linkages, eliminating the need for separate actuators for each element and thereby reducing overall device complexity while improving ease of operation.
Solution Approach 2:
The actuating part is designed as a multi-functional component that performs multiple switching operations through a single mechanism. By incorporating linkages that connect to both switching gear elements, the actuating part achieves universal control functionality, allowing one component to perform what previously required multiple dedicated components.
2Stability of the object's composition
If additional support structures like slides or supports are added for the actuating part, then the stability improves, but the device complexity increases
Solution Approach 1:
The carrier ring serves multiple functions simultaneously: it provides structural support for the actuating part, enables rotational movement about the actuating pivot axis, and facilitates linear displacement along the actuating longitudinal axis. This multi-functionality eliminates the need for separate support structures like slides or additional supports, maintaining stability while reducing device complexity.
Solution Approach 2:
The actuating part is designed with dynamic movement capabilities, allowing it to pivot about the actuating pivot axis and displace linearly along the actuating longitudinal axis. This dynamic design enables the actuating part to achieve stable positioning and control through motion rather than relying on additional static support structures, thereby reducing overall device complexity.
Data Source
AI summary
A manual machine tool having a drive motor, a gearbox and a tool holder, wherein a motor drive of the drive motor with a gearbox drive of the gearbox and a gearbox of the drive that is rotatable about an axis of rotation are coupled to the tool holder in a manner which permits rotation, wherein the gearbox has a first switching gear element and a second switching gear element, which can be adjusted in a linear manner by means of an actuating device in each case between a first setting position and a second setting position relative to the gearbox housing, wherein the actuating device is coupled to the switching gear elements and has an actuating part which is pivotably mounted relative to a machine housing of the manual machine tool about an actuating pivot axis and can be actuated manually by an operator of the manual machine tool, wherein the first switching gear element can be adjusted in a linear manner along its setting axis by means of a pivot movement of the actuating part about the actuating pivot axis using a deflecting gear.