Side View LED Light Assembly for Power Tool Visibility
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Solution Overview
Problem
Existing electric power tools lack an integrated and compact lighting solution that efficiently illuminates the work area without increasing the tool's volume or complexity.
Innovation Solution
Incorporation of a side view LED light assembly on the motor housing, electrically connected to the motor's drive circuit, which is activated by the on/off trigger, providing illumination perpendicular to the rotational axis and minimizing housing volume expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional light assembly is integrated into the power tool housing, then illumination of the work area is achieved, but the housing volume and tool complexity increase
Solution Approach 1:
The light assembly is nested within the existing housing structure by utilizing the internal cavity formed between the outer housing wall and the inner lining board. The light source, mounting bracket, and electrical connections are all contained within this existing space, eliminating the need for additional external housing volume while providing effective work area illumination.
2Illumination intensity
If a conventional light assembly is integrated into the power tool housing, then illumination of the work area is achieved, but the device complexity increases
Solution Approach 1:
The light assembly is designed to utilize existing structural components for multiple purposes. The inner lining board serves both as a structural reinforcement and as a mounting surface for the light assembly. The housing cavity that would otherwise be empty space is repurposed to contain the lighting components, thereby reducing overall device complexity while achieving illumination.
3Volume of stationary object
If a side view LED is used with emission perpendicular to installation direction, then compact housing design is maintained, but light emission direction must be precisely oriented
Solution Approach 1:
The light assembly is positioned at a specific location on the housing where the perpendicular light emission direction naturally aligns with the work area. The mounting bracket is oriented to take advantage of the side-view LED's emission characteristics, ensuring that light is directed forward toward the cutting or drilling area without requiring additional optical elements or complex orientation mechanisms.
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 enables efficient illumination of the work area while maintaining a compact tool design, enhancing usability and visibility without adding bulk to the power tool.
Implementation Method 1
The light assembly 11 includes a light-emitting diode (LED), preferably with the light emitting end of the light source 11L exposed at the front of the light assembly 11
Data Source
Figure 1~2B
AI summary
An electric power tool includes a motor and a motor housing at least partly encasing the motor. The motor housing has a top portion, a bottom portion opposite to the top portion, and side walls disposed between the top and bottom portions. A handle housing is connected to the bottom portion of the motor housing. A spindle is operatively connected to the motor. A first light assembly is disposed on a side wall of the motor housing.