Power Tool Dust Collection Box With Sealed Removable Filter
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Solution Overview
Problem
Existing hand-held power tools lack effective dust collection systems that can efficiently capture dust during operation, especially in applications where sensitive electronics and motors are present, and do not provide easy maintenance or vibration damping.
Innovation Solution
A modular dust collection system with a separable dust collection box and filter unit, featuring sealing elements, a damping unit for vibration reduction, and a fan unit for airflow generation, which can be easily connected and disconnected from the power tool, and includes features for efficient dust filtration and motor cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a dust collection system is added to hand-held power tools, then dust capture capability is improved, but device complexity increases
Solution Approach 1:
The dust collection system is divided into separable modules: a dust collection box that can be detached from the power tool housing. This segmentation allows the dust collection function to be added without permanently increasing the complexity of the power tool itself, as the components can be independently manufactured, assembled, and maintained.
Solution Approach 2:
The dust collection box is designed to be nestable within or alongside the power tool housing during operation, allowing the dust collection system to be integrated into the overall tool structure without significantly increasing its external dimensions or operational complexity.
2Object-affected harmful factors
If a filter unit is integrated into the dust collection box, then dust filtration effectiveness is improved, but ease of maintenance deteriorates
Solution Approach 1:
The filter unit is designed as a separate, removable component from the dust collection box. This segmentation enables the filter to be easily accessed, removed, cleaned, or replaced without disassembling the entire dust collection system or power tool, significantly improving maintenance ease while maintaining filtration effectiveness.
3Object-affected harmful factors
If sealing elements are added at interfaces, then dust leakage is reduced, but device complexity increases
Solution Approach 1:
Sealing elements in the form of flexible seals or gaskets are incorporated at the interfaces between the dust collection box and power tool housing, and between the filter unit and dust collection box. These thin film elements effectively prevent dust leakage without adding significant structural complexity, as they can be simple rubber or plastic rings that conform to the mating surfaces.
4Ease of repair
If a separable connection design is used, then ease of maintenance is improved, but reliability deteriorates
Solution Approach 1:
The separable connection interfaces are designed with pre-aligned features, guide rails, or positioning elements that ensure proper alignment and secure engagement when the dust collection box and power tool are connected. This preliminary preparation of connection features maintains reliability by preventing misalignment or improper assembly, while still allowing easy separation for maintenance purposes.
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
The system effectively captures dust, reduces vibration-related wear, and facilitates easy maintenance by allowing tool-free disconnection and cleaning, while ensuring the protection of sensitive components and improving motor durability.
Implementation Method 1
the accessory device has a fan unit, having an electric motor and a fan element, for generating the airflow
Implementation Method 2
the dust collection box has an inlet opening, through which the airflow can be directed into the dust collection box, and an outlet opening, through which the filtered airflow exits the dust collection box. In the dust collection box, the dust material is filtered out of the airflow by means of a filter unit
Implementation Method 3
the filter unit have a first sealing element arranged on the dust collection box side and a second sealing element arranged on the accessory device side, and the filter unit can be sealed off from the housing of the dust collection box and a housing of the accessory device via said sealing elements
Implementation Method 4
the accessory device have a damping unit, which is designed to be integral with the housing of the accessory device, for the purpose of damping the vibrations caused by the electric motor
Data Source
AI summary
An accessory device for a hand-held power tool includes a dust collection box that has a housing and a filter unit configured to filter an airflow. The housing is configured to be connected to a housing of the accessory device via a first securing unit. The filter unit is configured to be connected to the housing of the dust collection box via a second securing unit. The filter unit has a first sealing element arranged on the dust collection box side and a second sealing element arranged on the accessory device side. The filter unit is sealed from the housing of the dust collection box and the housing of the accessory device via the first and second sealing elements. The hand-held power tool in one embodiment is configured with a percussive mechanism.