Guide Plate Recess Geometry for Cutting Near Walls and Floors
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Solution Overview
Problem
Electric cutting devices with guide plates struggle to cut objects near walls or floors due to insufficient recess depth, preventing proper insertion and cutting of objects with guide plates protecting the cutting blades.
Innovation Solution
The cutting device features guide plates with recesses that recede along a predetermined direction, with parallel linear edges maintaining a distance between the guide plate's front end and cutting blade's operation range of one-fourth or less of the recess width, allowing objects to be cut even when in contact with floors or walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If guide plates with recesses are provided to protect cutting blades, then cutting blade protection is improved, but the ability to cut objects near walls or floors deteriorates due to insufficient recess depth
Solution Approach 1:
The guide plate's recess is designed to extend in the depth direction (along the cutting blade's movement path) rather than only in the width direction. This dimensional extension allows the recess to accommodate objects near walls or floors while the guide plate's width remains sufficient to protect the cutting blade, resolving the contradiction between protection and adaptability
2Adaptability or versatility
If the recess depth is increased to enable cutting near walls, then adaptability to cut near walls is improved, but the guide plate's protective function deteriorates
Solution Approach 1:
The guide plate achieves extended recess depth along the cutting direction without increasing the guide plate's width in the protective dimension. This selective dimensional extension allows the recess to reach objects near walls while maintaining sufficient guide plate coverage for blade protection
3Reliability
If the guide plate extends further to protect the cutting blade, then cutting blade protection is improved, but the ability to insert objects near walls deteriorates
Solution Approach 1:
The guide plate's protective extension is directed along the cutting blade's movement path (depth dimension) rather than perpendicular to it (width dimension). This orientation allows the recess to accommodate objects near walls while the guide plate's lateral coverage maintains blade protection
Data Source
AI summary
An electric cutting device includes: a pair of cutting blades cutting an object by rotating about a rotation central axis; an electric motor for operating the cutting blades; and a guide plate having a recess in a manner of receding along a predetermined direction for housing the object in advance when cutting the object. An edge of the recess includes a pair of linear portions. When a position of the guide plate at a most front end along the predetermined direction is set as a first position, and a position in an operation range of each cutting blade at a most front end along the predetermined direction is set as a second position, a distance between the first position and the second position along the predetermined direction is one-fourth or less of the predetermined interval.