Power Tool Support Arm Distance Member for Liquid Drainage
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Solution Overview
Problem
Existing power tools face challenges in protecting their drive mechanisms from moisture, particularly when large volumes of liquid are involved, as conventional covers may not adequately prevent liquid from reaching the internal components, leading to reduced service life and maintenance difficulties.
Innovation Solution
A power tool design featuring a support arm with a frame member and cover that includes a distance member extending radially to form a draining channel, preventing liquid from flowing onto the support arm and into the belt chamber, and a shield that can be rotated to allow easy access for servicing, while maintaining effective moisture protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cover enclosing the drive mechanism is provided, then protection against moisture is improved, but access for servicing and repair becomes more difficult
Solution Approach 1:
The cover is divided into a fixed portion attached to the frame member and a movable portion that can be rotated relative to the fixed portion. This segmentation allows the cover to remain enclosed for protection while enabling access by rotating the movable portion to an open position for servicing the drive mechanism.
2Stability of the object's composition
If the shield is fixed to the support arm, then structural stability is improved, but ease of access for maintenance is reduced
Solution Approach 1:
The shield is made dynamic by introducing a rotation capability between the fixed portion and movable portion of the cover. The shield can rotate relative to the support arm to an open position, enabling easy access for maintenance while maintaining structural stability when closed during operation.
Data Source
AI summary
The invention relates to a power tool including a support arm and a tool member supported at a first end of the support arm, where a drive motor at a second end of the support arm is arranged to power a drive belt that drives the tool member. The support arm comprises a frame member and a cover attached to the frame member, wherein the first end of the support arm further supporting a shield at least partially enclosing the tool member. A distance member is arranged between the frame member and the shield and extends radially at right angles to the drive shaft, wherein a radially outer portion of the distance member is spaced a predetermined distance(s) from the shield.