Geared Hinge Pin Remover Tool for Damage-Free Extraction
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Solution Overview
Problem
Existing methods for removing door hinge pins, such as using a hammer and screwdriver, often cause damage to the hinge pin, assembly, door, door frame, and surrounding walls, and prior art hinge pin removers are cumbersome, expensive, and ineffective.
Innovation Solution
A hinge pin remover featuring a geared wheel with teeth, a handle, a geared shaft with engaged teeth, a lower push rod for pushing the pin, and a forked clip for pulling the pin, allowing for controlled and safe removal of the hinge pin through rotational motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a hammer and screwdriver are used to push the hinge pin out, then the hinge pin can be removed, but damage is caused to the hinge pin, hinge assembly, door, door frame, and surrounding walls
Solution Approach 1:
The patent introduces a specialized hinge pin remover tool as an intermediary device between the user and the hinge pin. This tool includes a body with a recess that cradles the hinge pin, a geared wheel with teeth that engage the pin, and a handle that applies controlled force. The intermediary tool distributes and controls the removal force, preventing direct damage to the hinge pin and surrounding structures while efficiently extracting the pin.
Solution Approach 2:
The hinge pin remover is divided into multiple functional segments: a body with a recess for positioning, a geared wheel with engagement teeth for gripping, a handle for applying force, and internal geared shaft mechanisms. This segmentation allows each component to perform its specific function optimally - the recess positions the pin, the geared teeth grip it securely, and the handle transmits controlled force, collectively achieving damage-free removal.
2Productivity
If prior art hinge pin removers are used, then hinge pin removal is possible, but the devices are cumbersome, expensive, and ineffective
Solution Approach 1:
The patent merges multiple functions into a single integrated tool: the body serves as both the housing and the positioning mechanism with its recess, the geared wheel combines gripping teeth with force transmission, and the handle integrates with the geared shaft mechanism. This merging eliminates the need for separate positioning devices, gripping tools, and force application mechanisms, resulting in a compact, cost-effective, and efficient single-tool solution.
Solution Approach 2:
The hinge pin remover is designed to be self-contained and self-operating. The geared wheel teeth automatically engage with the hinge pin when positioned in the recess, and rotating the handle automatically drives the geared shaft and push rod to exert controlled force on the pin. The tool requires no external power source, adjustment mechanisms, or additional accessories - simply position and rotate the handle to complete the removal.
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
Enables the safe and efficient removal of hinge pins without causing damage, providing a practical and effective solution for maintenance and repairs.
Implementation Method 1
A geared wheel (17) includes a plurality of geared wheel teeth (17b). A geared shaft (8) includes a plurality of geared shaft teeth (8b). The geared shaft teeth (8b) are engaged with the geared wheel teeth (17b).
Data Source
AI summary
A hinge pin remover for removing a hinge pin from a door hinge assembly. A geared wheel is rotatably connected to a hinge pin remover body. The geared wheel includes a plurality of geared wheel teeth. A handle is rigidly connected to the geared wheel. A geared shaft extends through the remover body. The geared shaft includes a plurality of geared shaft teeth. The geared shaft teeth are engaged with the geared wheel teeth. A lower push rod is connected to the geared shaft and is for pushing the hinge pin as the geared wheel is rotated. A forked clip is slidingly connected to the geared shaft and is for pulling the hinge pin as the geared wheel is rotated.