Front-Mounted Saw Suction for Clear Visibility and Tool Access
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Solution Overview
Problem
Existing hand sawing machines with suction devices are cumbersome to install and maintain, often requiring installation in gaps between the machine housing and guide body, which obstruct the operator's view and complicate tool changes.
Innovation Solution
A suction device for hand-held sawing machines that is designed to be mounted frontally on the machine guide surface, with a flow channel running alongside it, allowing easy assembly and disassembly, and using positive-locking and magnetic holding means for attachment to the guide body, ensuring unobstructed visibility and tool access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the suction device is permanently attached to the machine housing, then the extraction function is stable, but the device complexity increases and maintenance becomes difficult
Solution Approach 1:
The suction device is separated from the machine housing into independent modular components. The guide body can be detached from the housing, and the suction device can be independently removed and replaced without affecting the entire machine structure, thereby reducing device complexity while maintaining extraction functionality.
Solution Approach 2:
The connection between the suction device and machine housing is made dynamic rather than static. The suction device can be easily attached and detached during operation or maintenance, allowing flexible configuration changes without permanent installation, which simplifies the overall device structure.
2Object-affected harmful factors
If the suction device is installed in a gap between the guide body and machine housing, then the extraction is effective, but the ease of operation deteriorates due to obstructed view and tool changes
Solution Approach 1:
The suction device is extracted from the gap between the guide body and housing, and repositioned to be mounted on the front surface of the guide body. This removes the obstruction from the operator's view and tool access area, while the suction function is maintained through the flow channel design that runs alongside the guide surface.
Solution Approach 2:
The suction device is repositioned from a lateral gap installation to a frontal surface mounting on the guide body. This dimensional change in installation position allows the suction function to be maintained while eliminating interference with the operator's line of sight and tool change operations.
3Manufacturing precision
If the guide contour is permanently fixed, then the manufacturing precision is maintained, but the adaptability decreases when the guide contour becomes worn
Solution Approach 1:
The guide body is divided into replaceable modular sections, allowing the guide contour to be independently replaced when worn. The precise guide contour can be manufactured as a separate component that can be swapped out without replacing the entire machine housing, maintaining manufacturing precision while enabling easy adaptation.
Solution Approach 2:
The guide contour is designed as a consumable component that can be discarded when worn and replaced with a new one. The modular design allows the guide body section to be recovered and reused with a new guide contour attached, maintaining precision while providing adaptability.
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
Facilitates easy installation and removal of the suction device, maintains operator visibility, and simplifies tool changes while providing effective dust extraction without obstructing the work area.
Implementation Method 1
a suction device (30) having a suction connection (31) for connecting a suction hose (91)
Implementation Method 2
using positive-locking and magnetic holding means for attachment to the guide body
Data Source
Figure 1~3
Figure 4~6
Figure 7~10
AI summary
The invention relates to a suction device for a portable handheld power saw (10), wherein: the handheld power saw has a housing (17) in which a drive motor (11) is arranged and has a tool holder (14), which can be driven to linearly oscillate along a movement axis (SO) by the drive motor (11), for a sawing tool (15) having an elongate design and extending along a longitudinal axis for making a saw cut in a workpiece (W); the handheld power saw has a guide body (22) having a guide surface (23) facing away from the housing (17), in front of which guide surface the sawing tool (15) protrudes when mounted on the handheld power saw, for guiding the handheld power saw on the workpiece (W); the suction device (30) has fastening means (60) for detachable fastening on the handheld power saw and has a suction connection (31) for connecting a suction hose (91) such that particles produced when the workpiece is being machined can be suctioned away from the guide body (22) through the suction connection. The suction device (30) has at least one guide contour (55) which, when the suction device is mounted on the handheld power saw, protrudes in front of the guide surface (23) such that the handheld power saw can be guided on the workpiece by means of the at least one guide contour (55) instead of the guide surface.