Portable Machining Device Controller Positioning
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Solution Overview
Problem
Conventional portable machining devices face issues with increased size, reduced operability, and handle maneuverability due to the placement and orientation of the controller, which interferes with the handle operation and movement of the machining main body.
Innovation Solution
The controller is strategically positioned behind the handle and tilted to avoid interference, allowing for improved handle maneuverability and a more compact design by minimizing space usage and allowing the machining device main body to be swung at larger angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the controller is housed in an erect manner in the up-to-down direction at the rear of the electric motor, then the controller can be stably positioned, but it interferes with handle operation and requires the handle to be arranged in the upward direction, reducing handle maneuverability
Solution Approach 1:
The controller is repositioned from the rear of the electric motor to the lower surface side of the base, changing its spatial dimension and arrangement orientation. This dimensional shift allows the controller to be positioned without interfering with handle operation, resolving the conflict between stable controller positioning and handle maneuverability
2Volume of moving object
If the controller is housed in a slanted manner at the rear of the electric motor, then space utilization is improved, but it obstructs movement of the machining main body when approaching the operation lever or base
Solution Approach 1:
The controller is extracted from its traditional position at the rear of the electric motor and relocated to the lower surface side of the base. This extraction removes the obstruction that prevented free movement of the machining main body, while the controller remains securely positioned through its new mounting location
3Ease of manufacture
If the controller depth is increased to accommodate housing requirements, then the controller can be properly contained, but the handle has to be arranged in the upward direction, increasing overall device size
Solution Approach 1:
The controller is positioned on the lower surface side of the base, utilizing the vertical dimension and space below the base rather than extending the device lengthwise. This dimensional repositioning allows adequate controller housing without increasing the overall device size, as the controller fits within the existing vertical profile of the device
Data Source
AI summary
When the protruding length of a cutting blade 11 protruding below a lower surface of a base 2 of a portable machining device 1 is set to its maximum length, at least a part of a controller 31 for controlling an electric motor 12 is configured to be located behind a handle 14 in the front-to-rear direction. Furthermore, the controller 31 is disposed so as to be tilted in the left-to-right direction or in the up-to-down direction with respect to the cutting blade 11. Because of this configuration, the height of the handle 14 can be restricted and at the same time the controller 31 can be disposed in a compact manner.