Radial LED Tool Lighting With Internal Wire Routing
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Solution Overview
Problem
Handheld power tools with shadowless lighting systems face challenges in managing the wiring for multiple LEDs due to limited space, which can affect visibility and operational efficiency.
Innovation Solution
A power tool design incorporating a secondary housing with a passageway for wires to connect LEDs, allowing efficient routing and placement of multiple LEDs around the output unit, preventing shadows and enhancing visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple LEDs are positioned radially around the output unit to create shadowless lighting, then visibility of the fastener is improved, but the complexity of wiring and space management worsens
Solution Approach 1:
The patent integrates the wiring system within the secondary housing structure, nesting the electrical connections inside the existing housing cavity. The housing itself serves as a conduit and organizational structure for the multiple wires connecting to radially positioned LEDs, eliminating the need for external wire management and reducing overall system complexity.
Solution Approach 2:
The secondary housing serves multiple functions: it provides structural support, contains the transmission mechanism, and acts as a routing conduit for electrical wiring. This multi-functionality reduces the need for separate wire management components, simplifying the overall wiring system while maintaining shadowless lighting with multiple LEDs.
2Illumination intensity
If multiple LEDs are mounted on the front surface of the power tool to provide shadowless lighting, then the lighting coverage is improved, but the space available for other components is reduced
Solution Approach 1:
The patent transitions from mounting LEDs on the two-dimensional front surface to positioning them radially around the output unit in three-dimensional space. This spatial reconfiguration allows multiple LEDs to provide comprehensive shadowless lighting coverage without consuming additional front surface area, as the LEDs are distributed around the cylindrical output unit rather than competing for flat mounting space.
3Device complexity
If a single LED is used to illuminate the working area, then the device simplicity is maintained, but shadow casting and visibility issues occur
Solution Approach 1:
The patent employs symmetric radial positioning of multiple LEDs around the output unit, which is the opposite of asymmetry. However, this symmetric arrangement creates uniform omnidirectional illumination that eliminates shadows, achieving superior visibility quality while maintaining reasonable device simplicity through the use of identical LED units in a repeating pattern.
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 solution provides even lighting without shadows, improving visibility and operational efficiency by effectively managing wiring within the limited space of handheld power tools.
Implementation Method 1
a light source mounted to a front end of the secondary housing
Data Source
AI summary
One example power tool includes a primary housing. A motor may be situated within the primary housing. The power tool may further include a transmission mechanism configured to transmit rotational energy from the motor to an output unit of the power tool. The power tool may further include a secondary housing in which at least a portion of the transmission mechanism is located. The power tool may further include a light source mounted to a front end of the secondary housing. The power tool may include one or more wires that extend through the passageway and that are electrically connected to the light source.