Integrated Rotary Hammer Dust Extraction for Compact Maneuverability
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Solution Overview
Problem
Existing dust collection systems for power tools are bulky, awkward, and costly due to their separate nature, limiting maneuverability and increasing the overall weight and cost of the tool system.
Innovation Solution
Integration of a dust collection assembly within the power tool, sharing components and reducing the number of parts, resulting in a more compact and cost-effective system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a separate dust collection system is used with the power tool, then dust collection function is provided, but the overall weight and size of the tool system increases
Solution Approach 1:
The patent combines the dust collection system with the power tool by integrating the motor that drives both the drive assembly and the fan into a single unit. The motor is positioned within the housing and drives the drive assembly through a shared drive shaft, while also directly driving the fan for dust collection. This merging of functions into a single integrated system provides dust collection capability while avoiding the weight penalty of a completely separate dust collection system.
2Object-affected harmful factors
If a separate dust collection system is used with the power tool, then dust collection function is provided, but the overall size and maneuverability of the tool system deteriorates
Solution Approach 1:
The dust collection assembly is merged with the power tool housing, with the fan positioned within the housing and the dust collection inlet integrated into the tool's structure. This integration creates a compact, unified system that maintains the power tool's maneuverability while providing effective dust collection, eliminating the bulk and awkwardness of separate systems.
Solution Approach 2:
The motor serves multiple functions: it drives the drive assembly for material processing and simultaneously drives the fan for dust collection. This multi-functionality allows a single motor to power both the primary tool operation and the dust collection system, reducing the need for additional components that would increase size and reduce maneuverability.
3Object-affected harmful factors
If a separate dust collection system is used with the power tool, then dust collection function is provided, but the cost of the tool system increases
Solution Approach 1:
The integration of the dust collection motor with the drive motor allows for a single motor unit to perform dual functions. This eliminates the need for separate motors, controls, and mounting structures for a standalone dust collection system, thereby reducing manufacturing costs while providing the same dust collection capability.
Solution Approach 2:
The shared motor and control system provide both drive and dust collection functions through a single integrated unit. This multi-functionality reduces the total component count and simplifies the manufacturing process, leading to lower production costs compared to manufacturing and assembling separate dust collection 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
The integrated dust collection assembly reduces the overall weight, size, and cost of the power tool system while enhancing maneuverability and efficiency.
Implementation Method 1
a motor positioned within the housing and defining a motor axis... a fan including blades rotated by the motor about a rotational axis that is coaxial with the motor axis
Implementation Method 2
a fan coupled to the motor to generate airflow... a first airflow generated by the fan travels in parallel with the motor axis... a second airflow generated by the fan can travel in a direction from the top end toward the bottom end to cool the motor
Data Source
AI summary
A rotary hammer includes a housing and a tool receptacle extending from a first end of the housing. A dust box is coupled to the housing and a motor is positioned within the housing. The motor defines a motor axis. A drive assembly is rotated by the motor about a working axis. The drive assembly is arranged relative to the motor so that the motor axis is at an oblique angle relative to the working axis.