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 are ergonomically challenging due to uneven weight distribution, leading to increased arm burden for workers over time.
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 twist motor, which improves weight balance by allowing the handle to be gripped closer to the machine's center, reducing strain on the worker'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 control unit is easier to access, but the weight balance deteriorates and arm burden increases
Solution Approach 1:
The circuit board is rotated 180 degrees so that its mounting surface faces the inner wall surface toward the handle portion rather than facing the twist motor. This dimensional reorientation allows the circuit board to be positioned closer to the handle for better accessibility while maintaining optimal distance from the twist motor, thereby improving weight balance without sacrificing control unit accessibility
2Weight of moving object
If the circuit board is arranged closer to the twist motor, then the weight balance improves, but the control unit becomes harder to access
Solution Approach 1:
By rotating the circuit board 180 degrees to face the inner wall surface toward the handle portion, the design enables the circuit board to be positioned optimally between the twist motor and the handle. This dimensional change allows the mounting surface to face away from the twist motor while still being accessible from the handle side, achieving both good weight balance and control unit accessibility simultaneously
Data Source
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.