Rotating Unit Pin Segmentation for Working Machine Durability
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Solution Overview
Problem
The existing driving device is prone to idling strikes due to breakage or failure of pins on the pin wheel, leading to potential plunger breakage and reduced durability.
Innovation Solution
The driving machine incorporates a rotating unit with a base unit and multiple engaging portions, including a first engaging portion for engagement with the striking unit when it moves to one side, and a second engaging portion that remains unengaged, providing additional support and preventing accidental movement to the bottom dead center.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pin wheel with pins is used to engage with the plunger, then the plunger can be wound up and driven, but the durability is reduced due to risk of pin breakage causing idling strikes
Solution Approach 1:
The pin wheel is segmented into multiple independent pins (first pin, second pin, third pin) distributed around its circumference. Each pin can independently engage with the plunger at different rotational positions, ensuring that if one pin breaks, the others can still provide engagement and prevent idling strikes.
Solution Approach 2:
The pin wheel is designed with multiple pins positioned in advance at different angular locations. This preliminary arrangement ensures that regardless of the rotational position or potential pin failure, there is always a pin available to engage with the plunger and prevent accidental movement to the bottom dead center.
2Reliability
If multiple pins are provided on the pin wheel, then the reliability is improved by preventing idling strikes, but the device complexity increases
Solution Approach 1:
Multiple pins are integrated into a single pin wheel component, merging the function of multiple engagement elements into one unified structure. This reduces assembly complexity and ensures synchronized rotation of all pins, while still providing the reliability benefits of multiple engagement points.
Solution Approach 2:
The pin wheel serves multiple functions: it drives the plunger during normal operation, provides backup engagement points to prevent idling strikes, and maintains a compact rotational structure. Each pin on the pin wheel can potentially engage with the plunger, making the pin wheel a multi-functional component that enhances reliability without proportionally increasing complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances the durability of the driving machine by reducing the occurrence of idling strikes and preventing plunger breakage, thereby improving the overall reliability and longevity of the device.
Implementation Method 1
a biasing unit configured to bias the striking unit to the one side in the first direction
Implementation Method 2
a rotating unit configured to be rotated by a driving force of the driving source, thereby moving the striking unit to the other side in the first direction
Data Source
AI summary
A driving device includes an electric motor, a striking unit configured to strike a fastener by moving to a lower side in an up-down direction, a biasing unit configured to bias the striking unit to the lower side in the up-down direction, and a rotating unit configured to move the striking unit to an upper side in the up-down direction and including first to third gears. The rotating unit includes a wheel and a plurality of engaging portions provided so as to be engageable with the striking unit, and the plurality of engaging portions include a second pin and a third pin that are engaged with the striking unit when the striking unit is moved to the upper side in the up-down direction and a stopper pin that is not engaged with the striking unit when the striking unit is moved to the upper side in the up-down direction.