Vertical Power Tool Wiring Base Assembly
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Solution Overview
Problem
The assembly of vertical power tools is complicated due to troublesome wiring work, especially when adding a circuit board, as existing designs require wiring between the motor and switch/power cord located under a tail cover, making it difficult to attach and connect components efficiently.
Innovation Solution
A vertical power tool design where the switch, power cord, and circuit board are attached to a wiring base on the upper portion of the body housing, covered by a top cover, allowing for easier wiring and assembly by eliminating the need for direct wiring between the motor and top cover, with a switch operation member on the top cover for easy activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the switch and power cord are attached to the tail cover (top cover) as in conventional designs, then the motor can be electrically connected to the switch and power cord, but the wiring work becomes troublesome and assembly becomes complicated
Solution Approach 1:
The invention introduces a separate wiring base that is distinct from both the motor housing and the top cover. This wiring base serves as a dedicated platform for mounting the switch and power cord, thereby segmenting the electrical connection functions from the mechanical housing structures. This segmentation eliminates the need for complex wiring between the motor and components embedded in the top cover, as the wiring base provides a centralized location for all electrical connections.
Solution Approach 2:
The wiring base acts as an intermediary component between the motor and the switch/power cord. Instead of directly wiring the motor to components embedded in the top cover, the wiring base serves as a mediator that consolidates all electrical connections. This intermediary structure simplifies the wiring process by providing a centralized location for connections, reducing the complexity of routing wires through the housing structures.
2Adaptability or versatility
If a circuit board is added to the conventional configuration with switch and power cord under the tail cover, then more functions can be integrated, but the wiring work becomes even more troublesome
Solution Approach 1:
The invention merges the circuit board with the switch and power cord on the same wiring base. This consolidation of all electrical components (motor, switch, power cord, and circuit board) onto a single wiring base creates a centralized electrical connection point. This merging approach allows multiple functions to be integrated while simplifying wiring, as all connections can be made at one location rather than routing wires through the housing to reach components distributed throughout the structure.
3Reliability
If components are arranged to cover the motor shaft from above, then the motor can be protected, but the overall height of the tool increases
Solution Approach 1:
The invention resolves the height issue by changing the spatial arrangement of the wiring base. Instead of positioning the wiring base directly over the motor shaft (which would increase height), the wiring base is arranged in a different dimensional configuration where it covers the motor shaft from above but does not extend vertically beyond the top cover. This dimensional reorganization allows the motor shaft to be protected while maintaining a compact overall height, as the wiring base utilizes horizontal space rather than adding vertical bulk.
Data Source
AI summary
Provided is a vertical power tool superior in assembling performance. The vertical power tool is provided with a power cord, and has body housings 2, 3 that accommodate a motor having a vertically extending axis as a grip portion. A wiring base 30 to which a switch 34 that activates and deactivates the motor, the power cord 35 and a circuit board 36 are attached is attached to upper portions of the body housings 2, 3. A top cover is provided to cover the wiring base 30. A switch operation member is attached to the top cover to switch the switch 34 on and off.