Impact Tool Split Anvil Assembly for Replacement Without Disassembly
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Solution Overview
Problem
Impact tools experience premature wear and breakage of anvils due to increased power and limited sizing standards, requiring disassembly for replacement, leading to downtime and inefficiency.
Innovation Solution
A split anvil assembly with a removable external portion that can be easily detached and replaced without disassembling the impact tool, featuring a biasing member and retaining mechanism to secure the external anvil to an internal portion, allowing for interchangeable anvil attachments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If impact tools become more powerful, then the torque output increases, but the anvil strength is limited by sizing standards resulting in premature wear and breakage
Solution Approach 1:
The anvil is divided into two separate parts: a durable internal anvil portion that remains in the impact tool and an external anvil portion that can be easily removed and replaced. This segmentation allows the internal portion to withstand the high torque forces while the external portion can be quickly exchanged when worn or damaged, resolving the contradiction between power and reliability.
2Reliability
If the anvil is strengthened to withstand higher power, then durability improves, but the device complexity increases and requires disassembly for replacement
Solution Approach 1:
By segmenting the anvil into internal and external portions with a simple retention mechanism, the design achieves durability through the robust internal portion while maintaining simplicity for replacement through the easily detachable external portion, avoiding increased device complexity.
Solution Approach 2:
The external anvil portion is extracted as a separate replaceable component that can be removed without disassembling the impact tool. This extraction allows the main tool body to remain simple while the worn component can be easily replaced, resolving the contradiction between durability and replacement complexity.
3Ease of repair
If the anvil is made replaceable without disassembly, then ease of repair improves, but the device complexity increases
Solution Approach 1:
The anvil is segmented into a permanent internal portion and a replaceable external portion connected by a simple retention mechanism. This segmentation enables easy replacement without tool disassembly while adding minimal complexity, as the retention mechanism is designed to be straightforward and integrated into the existing tool structure.
Data Source
AI summary
An impact tool having a split anvil assembly includes an internal anvil portion fixed inside a housing of the impact tool and an external anvil portion that is removably attached to the internal anvil portion and extends outside of the housing. The external anvil portion includes a retractable pin biased to an extended position to engage the internal anvil portion to secure the external anvil portion to the internal anvil portion and depressed to a retracted position to permit the external anvil portion to be disengaged from the internal anvil portion. The internal anvil portion and the external anvil portion may include respective internal and external grooves that interconnect with each other to link the movement of the internal anvil portion to the external anvil portion.