Adjustable Lighting Mechanism for Power Tools
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Solution Overview
Problem
Current power tools have stationary lighting mechanisms that cannot be adjusted for position or angle, causing inconvenience when using accessories of various diameters, as the lighting source is often masked.
Innovation Solution
An adjustable lighting mechanism is integrated into the power tool, featuring a housing with swinging members and a lighting source that rotates relative to the tool main body, allowing the lighting angle to be adjusted between negative thirty degrees and zero degrees, and the lighting direction to be adjusted between zero and thirty degrees, using curved guiding slots and elastic positioning protrusions for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a stationary lighting mechanism is used, then the structure is simple, but the lighting position and angle cannot be adjusted, causing the lighting source to be masked when accessories of various diameters are replaced
Solution Approach 1:
The patent applies the dynamics principle by transforming the stationary lighting mechanism into a movable one. The housing is designed to rotate relative to the tool main body around the output axis, and the swinging members enable the housing to swing within a specific angular range. This dynamic structure allows the lighting source to be repositioned according to different accessory diameters and working conditions, resolving the contradiction between adaptability and structural simplicity.
Solution Approach 2:
The lighting mechanism is segmented into multiple independent components: the tool main body, the housing, and the swinging members. This segmentation allows each component to perform its specific function independently while maintaining overall coordination. The housing can rotate separately from the tool main body, and the swinging members can swing independently within the housing, providing multi-degree-of-freedom adjustment capability without requiring a completely complex integrated structure.
2Adaptability or versatility
If the lighting mechanism rotates with the grip portion, then the lighting direction is predetermined, but the adjustability of lighting position or angle is limited
Solution Approach 1:
The patent introduces additional dimensional freedom by allowing the housing to rotate around the output axis, which is perpendicular to the grip portion's rotation axis. This creates a second rotational dimension, enabling the lighting source to be positioned not only by gripping rotation but also by housing rotation. The swinging members further add angular adjustment capability, providing three-dimensional lighting position control that overcomes the limitation of predetermined lighting direction.
3Adaptability or versatility
If curved guiding slots are used to guide the housing, then the housing can rotate and swing to adjust lighting, but the structure becomes more complex
Solution Approach 1:
The patent employs curved guiding slots instead of straight slots to guide the swinging members. The curved shape of the slots naturally constrains the swinging members to follow a specific angular path, enabling the housing to swing within a controlled range while maintaining structural simplicity. The curvature of the guiding slots translates rotational motion into the desired swinging motion, achieving complex movement patterns through simple geometric constraints rather than complex mechanical linkages.
Data Source
AI summary
A power tool includes a motor, an output shaft, a tool main body and an adjustable lighting mechanism. The output shaft is connected to the motor. The tool main body includes an end face and a curved guiding slot. The curved guiding slot is near the end face. The adjustable lighting mechanism includes a housing, a swinging member and a lighting source. The housing is moveably mounted to the tool main body and guided by the curved guiding slots. The swinging member is connected to the housing and includes a pivot centerline. The lighting source is disposed at the housing and includes a lighting centerline. The housing can rotate outward from an output axis, such that the pivot centerline moves within a swinging range and the lighting centerline moves within a lighting range.