Adjustable Foot Plate Actuator for Hand-Held Machine Tool
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Solution Overview
Problem
Existing hand-held power tools, such as jigsaws, face challenges in adjusting the base plate's position relative to the housing with precision and ease, often requiring manual adjustment and lacking in precise control.
Innovation Solution
An adjustment device with an actuator and eccentric section is used, allowing for precise adjustment of the base plate's position through a controlled movement, enabling translational, rotational, or mixed movements in various planes, without the need for manual adjustment of the locking device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual adjustment of the locking device is used to adjust the base plate position, then the device complexity is reduced, but the manufacturing precision and ease of operation deteriorate due to lack of precise control
Solution Approach 1:
The actuator automatically adjusts the base plate position through its own actuation mechanism without requiring manual intervention for positioning. The adjustment section moves within the contact recess and directly translates actuator movement into precise base plate positioning, making the system self-adjusting rather than manually controlled.
Solution Approach 2:
The adjustment section acts as an intermediary element between the actuator and the base plate. It is accommodated in the contact recess and translates the actuator's movement into precise positional changes of the base plate, enabling controlled adjustment without direct manual handling of the base plate itself.
2Ease of operation
If manual adjustment of the base plate is used after releasing the locking device, then the device complexity is minimized, but the ease of operation deteriorates due to requiring manual positioning
Solution Approach 1:
The actuator performs the adjustment function automatically when actuated, eliminating the need for manual positioning operations. The system serves itself by converting actuator movement directly into base plate position changes through the adjustment section in the contact recess.
Solution Approach 2:
The manual mechanical adjustment operation is replaced by an actuated mechanism. Instead of manually releasing and positioning the base plate, the actuator performs the adjustment through its adjustment section moving in the contact recess, substituting manual mechanical operations with an automated actuation system.
3Measurement precision
If a simple locking device is used for base plate adjustment, then the device complexity is reduced, but the measurement precision deteriorates due to inability to achieve precise positioning
Solution Approach 1:
The adjustment section serves as a precision intermediary that is accommodated in the contact recess. It translates actuator movement into precise positional changes of the base plate, enabling accurate positioning through a controlled mechanical interface rather than direct simple locking.
Solution Approach 2:
The system achieves precise positioning through the self-adjusting mechanism of the actuator. The adjustment section automatically positions itself within the contact recess during actuation, providing precise control without requiring complex external measurement or positioning systems.
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
This solution allows for precise and effortless adjustment of the base plate's position relative to the housing, enhancing precision and reducing manual intervention, enabling accurate positioning for different operational angles and tasks.
Implementation Method 1
an actuator (9) with an adjustment section (10) which is arranged between the housing (2) and the base plate (3) and is held on one of these components... The adjustment section (10) of the actuator (9) is adjustably accommodated in a contact recess (7) on the other component... the adjustment section (10) touches one or more walls of the contact recess (7), the position of the base plate (3) relative to the housing (2) being changed during the adjustment movement
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The invention relates to a hand-held machine tool (1) having a foot plate (3), which is held to a housing (2) of the hand-held machine tool (1), wherein the relative position of the foot plate (3) relative to the housing (3) is adjustable via an adjustment device (7, 9, 10). The adjustment device (7, 9, 10) comprises an actuator (9) having a displacement section (10) arranged between the housing (2) and the foot plate (3), wherein a displacement section (10) of the actuator (9) is displaceably housed in a contact recess (7) in one of the components.