Fastener Driver with Replaceable Gas Spring and Pre-Stretched Linkage
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Solution Overview
Problem
Existing electromechanical fastener driving devices suffer from complex designs, high costs, poor ergonomics, non-portability, safety issues, and inefficient energy transfer due to integrally formed gas spring and anvil assemblies, leading to premature wear and increased maintenance costs.
Innovation Solution
The fastener driving apparatus incorporates a gas spring assembly with a floating piston and a flexible linkage drive assembly featuring a one-way element, allowing independent replacement of components and efficient energy transfer through a pre-stretched flexible linkage element, reducing wear and slapping, and utilizing a one-way element to prevent stretching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If gas spring and anvil are integrally formed, then manufacturing simplicity is improved, but component wear increases and maintenance costs increase
Solution Approach 1:
The gas spring assembly and anvil are separated into independent replaceable components. The anvil can be removed and replaced independently from the gas spring, allowing worn components to be individually replaced rather than requiring replacement of an integral assembly. This segmentation reduces wear impact and maintenance costs while maintaining manufacturing simplicity for each individual component.
2Power
If complex drive mechanism is used, then fastener driving capability is improved, but device complexity increases
Solution Approach 1:
The drive mechanism is extracted and simplified to essential components only. Unnecessary intermediate components and complex transmission elements are removed, retaining only the critical elements needed for fastener driving. This extraction maintains adequate driving capability while significantly reducing overall device complexity and improving reliability.
3Ease of manufacture
If flexible linkage element is not pre-stretched, then manufacturing cost is reduced, but wear and slapping increase
Solution Approach 1:
The flexible linkage element is pre-stretched during manufacturing or initial installation to establish proper tension before service begins. This preliminary action prevents excessive wear and slapping that would occur during normal operation, extending component life and maintaining reliable operation without requiring complex tensioning mechanisms during use.
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 design enhances efficiency, safety, and reduces maintenance costs by allowing independent replacement of gas spring and anvil components, improving ergonomics, and minimizing wear and energy loss, resulting in improved performance and reduced operational complexity.
Implementation Method 1
move the rod to an energized position generating potential energy, and disengage from the anvil when the anvil is at the second position causing the rod to release at least a portion of the potential energy and accelerate the anvil
Data Source
AI summary
A fastener driving apparatus includes a gas spring piston, a first drive shaft, a second drive shaft, a drive mechanism operatively coupled to the first drive shaft and the second drive shaft, an actuator fixedly coupled to the drive mechanism, and an anvil moveable between a first position and a second position. During an operational cycle of the fastener driving apparatus, the first drive shaft and the second drive shaft may drive the drive mechanism causing the actuator to engage to the anvil when the anvil is at the first position, to move the anvil from the first position to the second position and compress the gas spring piston to generate potential energy, and to disengage from the anvil when the anvil is at the second position causing the gas spring piston to release the potential energy and accelerate the anvil to drive a fastener.