Drop-In Anchor Drive Pin Assembly Without Manual Hammering
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Solution Overview
Problem
The repeated striking of setting tools with a hammer to install drop-in anchors, particularly overhead, causes significant user fatigue and potential injuries.
Innovation Solution
A power tool with a drive pin assembly that includes a drive pin and a threaded die, movable between retracted and extended positions, driven by a motor or hydraulic mechanism, to expand and set drop-in anchors without manual hammering, featuring a modular design for different anchor sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hammer is used to repeatedly strike the setting tool to install drop-in anchors, then the anchor can be expanded and set in the concrete hole, but significant user fatigue and potential injuries occur, especially when working overhead
Solution Approach 1:
The patent replaces the manual hammering mechanical system with a power-driven mechanical system. The power tool uses an motor or hydraulic mechanism to drive a drive pin that directly engages and expands the anchor, eliminating the need for repeated hammer strikes and thereby reducing user fatigue and potential injuries.
Solution Approach 2:
The power tool system performs the anchor installation automatically once positioned. The drive pin, when actuated by the power source, self-propels to engage and expand the anchor without requiring continuous manual intervention or hammering, allowing the system to complete the setting operation autonomously.
2Adaptability or versatility
If a power tool with modular drive pin assembly is used to install drop-in anchors, then tool changes for different anchor sizes can be made quickly, but the device complexity increases
Solution Approach 1:
The drive pin assembly is divided into separable modular components that can be independently changed. The drive pin body, drive pin, and threaded die can be detached and replaced as a unit or individually, allowing quick adaptation to different anchor sizes without replacing the entire power tool, thus balancing versatility with manageable complexity.
Solution Approach 2:
The power tool is designed with a universal interface and standardized mounting mechanisms that accommodate various drive pin and threaded die configurations. This allows a single base tool to perform multiple functions across different anchor sizes through simple component exchanges, achieving high adaptability without proportionally increasing overall device 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
Reduces user fatigue and injury risk by automating the anchor installation process, enhances efficiency through modularity, and allows quicker tool changes for various anchor sizes.
Implementation Method 1
The drive pin includes a ramped portion that forces the threaded die to move radially outward as the drive pin moves from the retracted position toward the extended position
Implementation Method 2
the biasing member is a coil spring
Implementation Method 3
the gasket is a rubber gasket that is configured to absorb axial forces and allow axial movement between the anchor and the power tool
Data Source
AI summary
A power tool includes a housing, a motor positioned within the housing, a drive assembly at least partially positioned within the housing and coupled to the motor, and a drive pin assembly supported by the housing. The drive pin assembly includes a drive pin body extending from the housing, a drive pin configured to be inserted into a drop-in anchor and coupled to the drive assembly for movement relative to the drive pin body between a retracted position and an extended position, and a threaded die supported by the drive pin body and configured to be inserted into the drop-in anchor with the drive pin. The threaded die is configured to be movable radially outward by the drive pin as the drive pin moves from the retracted position toward the extended position.