Removable Light Unit for Pneumatic Tool Switch-Triggered Illumination
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Solution Overview
Problem
Pneumatic power tools lack integral electrical power supplies to support traditional light units, limiting their ability to incorporate functional and efficient lighting solutions.
Innovation Solution
A removable light unit with a rechargeable battery and bayonet connection to the tool housing, featuring a Hall sensor for automatic activation and a timer for sustained illumination, allowing independent power management and integration with pneumatic tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pneumatic power tool is used, then the tool can operate without an integral electrical power supply, but the tool cannot support traditional light units that require electrical power
Solution Approach 1:
The light unit is designed as a separate, removable component with its own integrated battery pack, extracted from the main tool body. This allows the light unit to be independently powered and attached to pneumatic tools that lack electrical power supplies, resolving the contradiction between pneumatic operation and electrical lighting support
Solution Approach 2:
The light unit incorporates multiple functions: it provides illumination, contains its own rechargeable battery for power independence, includes a sensor for automatic activation, and features a timer for sustained illumination. This multi-functional design allows it to work with various tool types including pneumatic tools without requiring integral power supply
2Adaptability or versatility
If a light unit with its own battery is used, then the light unit can be used with pneumatic tools, but the overall device complexity increases
Solution Approach 1:
The lighting system is segmented into a modular light unit that can be independently attached to or removed from the tool. This segmentation isolates the battery and control components into a separate module, making the overall system more manageable despite the added complexity, and enabling compatibility with pneumatic tools
3Ease of operation
If automatic sensor activation is implemented, then the light turns on automatically with tool activation, but the device requires additional sensor components
Solution Approach 1:
The light unit incorporates a sensor that automatically detects when the tool is activated and turns on the light without user intervention. This self-service feature eliminates the need for manual switching, improving ease of operation despite the added sensor complexity
Solution Approach 2:
The sensor provides feedback about tool activation state to the controller, which then automatically controls the light output. This feedback mechanism enables automatic activation and deactivation, improving operational convenience while managing the complexity through integrated control
4Duration of action of moving object
If a timer is included for sustained illumination, then the light remains on for a predetermined time after switch deactivation, but the control system becomes more complex
Solution Approach 1:
The controller is programmed with a timer that automatically extends illumination for a predetermined period after the switch is deactivated. This preliminary programming of the control logic provides sustained illumination without requiring complex mechanical timer mechanisms, managing complexity through software-based timing
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
Enables the use of a self-sustaining light unit that automatically turns on with tool activation, providing prolonged illumination without the need for an integral power supply, enhancing operational visibility in pneumatic tool applications.
Implementation Method 1
The sensor may include a Hall sensor configured to sense movement of a magnet coupled to the switch of a tool
Implementation Method 2
A removable light unit with a rechargeable battery and bayonet connection to the tool housing
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
A power tool (e.g., a pneumatic tool) includes a tool housing, a motor disposed in the tool housing, and a switch coupled to the tool housing and configured to control operation of the motor. A light unit includes a light unit housing removably coupleable to the tool housing. The light unit includes a light disposed in the light unit housing, a controller, and a sensor. The sensor is configured to sense actuation of the switch, and the controller is configured to cause the light to turn on when the sensor senses that the switch is actuated.