Dust Suction Device for Hand-Held Drill with Pressure Switch
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Solution Overview
Problem
Existing vacuum cleaning devices for hand-held drills are not easily adaptable to different drill models and lack effective dust filtration and self-sufficiency, complicating their operation and attachment.
Innovation Solution
A vacuum cleaning device with a pressure switch for automatic activation, a fastening mechanism for lateral attachment to the drill's clamping neck, and a dust filter upstream of the suction fan, equipped with its own power source and adjustable suction tube, allowing universal compatibility with various drill shapes and sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a vacuum cleaning device is designed to be detachably attachable to various drill models, then adaptability is improved, but device complexity increases due to the need for universal compatibility mechanisms
Solution Approach 1:
The vacuum cleaning device is designed with a universal attachment mechanism that can be detachably fastened to the clamping neck of various drill models (hand-held drills, impact drills, rotary hammers) without requiring model-specific adaptations. The fastening device accommodates different drill shapes and sizes while maintaining a standardized connection interface.
2Object-affected harmful factors
If a dust filter is placed upstream of the suction fan, then dust filtration effectiveness is improved, but the suction fan is exposed to contaminants before filtration occurs
Solution Approach 1:
The dust filter is positioned upstream of the suction fan in the airflow path, performing preliminary filtration of drilling dust before the air reaches the fan. This preliminary action captures dust particles early in the suction process, reducing the contaminant load that reaches the suction fan and protecting it from exposure to contaminants.
3Ease of operation
If a pressure switch is added for automatic activation, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The pressure switch is integrated into the vacuum cleaning device to enable automatic activation based on detected pressure changes during drilling operations. The device monitors pressure conditions and automatically starts the suction function when drilling dust is detected, eliminating the need for manual activation and providing self-service operation.
4Reliability
If the vacuum cleaning device is designed as self-sufficient with its own power source, then reliability is improved, but weight of the device increases
Solution Approach 1:
The vacuum cleaning device is designed as a self-sufficient unit with its own power source (battery or rechargeable battery) integrated into the device structure. This segmentation separates the power supply function from the drill, making the vacuum cleaner independently operable and reliable without depending on the drill's power system.
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
Simplifies operation, provides effective dust filtration, and ensures self-sufficiency, enabling easy attachment to different drill models without additional adaptation, enhancing usability and dust protection.
Implementation Method 1
a suction fan (16) which can move drilling dust through the dust collection bag (17)
Implementation Method 2
a dust filter (18) which can separate the drilling dust from the suction flow
Data Source
Figure 1
Figure 2~4
AI summary
The present invention relates to a dust extraction device (8) for detachable attachment to a hand-held drill (1), comprising an electric motor (15), a suction blower (16) driven by the electric motor (15), a dust collection chamber (17), a dust filter (18) arranged in the flow path, a suction tube (22), a suction channel (26) which is connected at one end to an inlet end (28) of the suction tube (22) and which has at the other end a suction opening (29) which, in the mounted state of the dust extraction device (8), is arranged coaxially to the tool rotation axis (3), a pressure switch (37) which automatically switches on the electric motor (15) when the suction channel (26) is pressed against an obstacle, and/or a fastening device (11) for detachably attaching the dust extraction device (8) to a clamping collar (7) of the drill (1), such thatthat the vacuum suction device (8) is located to the side of the drill (1) when the drill (1) is in its mounted state and in a normal operating position.