Binding Machine PCB Layout for Better Weight Balance
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Solution Overview
Problem
The existing binding machines used for tasks like reinforcing bars at construction sites cause arm strain due to uneven weight distribution, affecting usability over extended periods.
Innovation Solution
The binding machine design includes a circuit board positioned between the twist motor and the inner wall of the body portion, closer to the handle, which improves weight balance by allowing components to be centered, reducing strain on the user's arm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the circuit board is arranged closer to the handle portion, then the weight balance is improved and arm strain is reduced, but the space for component mounting becomes more limited
Solution Approach 1:
The circuit board is rotated 90 degrees so that its mounting surface faces the inner wall surface of the body portion toward the handle portion. This dimensional reorientation allows the board to be positioned closer to the handle (improving weight balance) while still providing adequate mounting space for control components.
2Ease of operation
If the circuit board is positioned closer to the twist motor, then the weight balance improves, but the heat interference from the motor increases
Solution Approach 1:
The circuit board is positioned asymmetrically between the twist motor and the inner wall surface, closer to the motor than the wall surface. This asymmetric placement optimizes weight balance while the motor's housing and the board's orientation create natural thermal separation, reducing heat interference.
3Ease of operation
If the components are centralized to improve weight balance, then operability improves, but the heat dissipation space is reduced
Solution Approach 1:
The internal space is segmented into functional zones: the circuit board occupies the central region for weight balance, while peripheral areas around the motor and battery provide heat dissipation pathways. This spatial segmentation allows component centralization without compromising thermal management.
Data Source
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AI summary
A binding machine includes: a twisting unit configured to twist a binding member which is guided in a loop shape so as to wrap around an object, and thus to bind the object; a twist motor configured to drive the twisting unit; a circuit board having a mounting surface on which a control unit configured to control the twist motor is mounted; a body portion housing the twisting unit, the twist motor and the circuit board; and a handle portion protruding outward from the body portion. The circuit board is arranged between the twist motor and an inner wall surface of the body portion which is located toward the handle portion in such a manner that the mounting surface faces the inner wall surface and the circuit board is closer to the twist motor than the inner wall surface.