Power Tool Attachment With Motion Conversion and Load Compensation
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Solution Overview
Problem
Existing power tools lack efficient mechanisms to convert rotational motion into linear reciprocating motion or to utilize rotational motion for tasks like high-volume, low-pressure spraying of paints and coatings, and they often suffer from alignment and load compensation issues when attaching accessories.
Innovation Solution
A power tool appliance that dynamically connects to a power tool to receive rotational input, featuring a housing, drive, and mount or support assembly with springs or struts for alignment and load compensation, and includes a pump for converting rotational motion into linear reciprocating motion or generating airflow for spraying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a power tool appliance is attached to a power tool, then rotational motion can be received and converted for tasks like spraying, but alignment and load compensation issues occur during attachment
Solution Approach 1:
The patent employs dynamic elements including springs and struts that can adjust their stiffness and damping characteristics in real-time to maintain optimal alignment between the power tool and appliance. These dynamic components adapt to varying load conditions and operational phases, transitioning from compliant during attachment to rigid during operation, thereby resolving the contradiction between attachment versatility and alignment precision.
Solution Approach 2:
The system changes physical parameters of the mounting components during operation. The springs and struts transition from a compliant state during attachment to a rigid state during operation through controlled adjustments in stiffness and damping. This parameter transformation enables the system to achieve both easy attachment and precise alignment, directly addressing the technical contradiction.
2Productivity
If existing power tools are used for tasks requiring linear reciprocating motion, then rotational motion is available, but conversion to linear reciprocating motion is inefficient or non-existent
Solution Approach 1:
The patent utilizes dynamic components (springs, struts, and movable mounting elements) that transform rotational motion from the power tool into linear reciprocating motion through controlled oscillation and compression. These dynamic elements create an efficient motion conversion mechanism that is simpler than traditional crank-connect rod systems, directly improving productivity while managing device complexity.
3Reliability
If power tools operate without load compensation, then operational simplicity is maintained, but load variations reduce stability and efficiency
Solution Approach 1:
The mounting system with springs and struts provides automatic load compensation that adjusts to varying operational loads without external control. The compliant components self-regulate the force distribution and alignment based on real-time load conditions, enhancing reliability through passive adaptation rather than active control systems, thereby improving stability without significantly increasing device complexity.
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 power tool appliance effectively converts rotational motion into linear reciprocating motion for tasks like spraying, provides secure and aligned attachment to the power tool, and compensates for load variations, enhancing operational efficiency and stability.
Implementation Method 1
a spring disposed between the housing and the support assembly, the spring configured to bias the housing upwards and away from the support assembly to align the power tool and the power tool assembly
Implementation Method 2
a pump connected to the drive, the pump configured to convert the rotational motion from the drive into a linear reciprocating motion
Implementation Method 3
the drive configured to convert the rotational motion from the power tool into a linear reciprocating motion
Data Source
AI summary
A power tool attachment is configured to connect to a power tool at a static interface and a dynamic interface. The static interface statically fixes the power tool and power tool attachment together. The dynamic interface provides rotational motion generated by the power tool to the power tool attachment. The rotational motion is provided to a drive of the power tool attachment that converts the rotational motion to an output that operates an appliance output of the power tool attachment.