Hand-Held Tool Housing With Chip Removal Guard and Rest Blocks
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Solution Overview
Problem
Existing hand-held electric tools pose safety risks due to open bottoms allowing chips to enter the housing, potentially contacting the user's hand, and instability during operation.
Innovation Solution
A hand-held electric tool with a partially closed bottom featuring a chip removal hole and a protective portion to guide chips away from the user, combined with rest blocks for improved stability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the bottom of the housing is fully open for chip removal, then chip removal efficiency is improved, but user safety deteriorates due to risk of contact with high-speed components
Solution Approach 1:
The bottom wall is segmented by providing a dedicated chip removal hole rather than a fully open bottom. This segmentation allows chips to be removed through a controlled opening while maintaining protection over the rest of the bottom area, thus balancing chip removal efficiency with user safety.
Solution Approach 2:
A protective portion is introduced as an intermediary structure between the chip removal hole and the user's hand. This protective portion extends downward to block chips from reaching the user while still allowing chips to be removed through the hole, effectively mediating between chip removal needs and safety requirements.
2Ease of operation
If chips are removed through an open bottom, then chip removal is simplified, but chips may fall onto the user's hands causing harm
Solution Approach 1:
The protective portion serves as an intermediary barrier that intercepts chips exiting the chip removal hole. It allows chips to be removed easily through the hole while preventing them from continuing on a trajectory that would lead to contact with the user's hands.
Solution Approach 2:
The protective portion is positioned in advance to counteract the harmful effect of chips falling onto the user's hands. By extending downward from the chip removal hole, it preemptively blocks the path of chips before they can reach the user, thus preventing harm before it occurs.
3Ease of manufacture
If the external structure is not well designed, then manufacturing is simpler, but the tool becomes unstable during operation
Solution Approach 1:
The housing is divided into a main body section and a grip section, with the grip section extending rearward. This segmentation allows the grip section to be optimized for user comfort and control stability, while the main body section houses the cutting mechanism. The distinct sections work together to provide both manufacturability and operational stability.
Data Source
AI summary
The present invention provides a hand-held electric tool comprising a housing and an operating component. The housing has a main body section and a grip section extending from the rear side of the main body section, and the front end of the main body section is provided with a mounting interface. The operating component is mounted at the mounting interface of the housing and protrudes from the housing. A chip removal hole is formed in the bottom wall of the main body section of the housing, and a protective portion that extends downwards at least partially is provided at the bottom end at the position where the main body section joins the grip section. The bottom of a hand-held electric tool of the present invention is substantially closed, except for being provided with a chip removal hole, which allows removal of chips while preventing a user's hand from being inadvertently extended into the housing and contacting a component operating at a high speed. Moreover, chips removed through the chip removal hole are blocked by the protective portion, without reaching the grip section, which offers considerable advantages in terms of safety and hygiene.