Gate Hinge Projection Engagement for Wear-Resistant Closure
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Solution Overview
Problem
Conventional safety gate hinges rely on internal ramps for biasing the gate barrier, leading to increased wear and reduced support against external forces, and may inadvertently leave access points unsecured when held open.
Innovation Solution
A gate hinge design featuring an upper hinge portion with inclined ramps and a lower hinge portion that allows rotation and translation, incorporating projections and receptacles to secure the gate in the closed position, and a spring mechanism to bias the hinge toward closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If internal ramps are used to bias the gate barrier, then the gate can be held open, but wear increases and support against external forces decreases
Solution Approach 1:
The patent removes the internal ramps from the hinge mechanism entirely. Instead of using ramps within the hinge to bias the gate, the invention uses external counterweight members that hang below the gate barrier. This extraction of the biasing mechanism from the hinge itself eliminates the wear problem while maintaining the gate-holding function through gravitational counterbalance.
Solution Approach 2:
The patent introduces counterweight members as intermediary elements that provide the biasing force. These counterweights act as mediators between the gate barrier and the hinge, transferring the biasing function away from the hinge's internal ramps. The counterweights create a gravitational moment that balances the gate in the open position without requiring contact surfaces that wear.
2Force
If internal ramps are used for biasing, then the gate can be biased toward closure, but support against external forces is reduced
Solution Approach 1:
The biasing function is extracted from the hinge's internal structure and relocated to external counterweight members. This allows the hinge to focus on providing strong rotational support while the counterweights provide the biasing force, separating the functions of force generation and force resistance.
Solution Approach 2:
The patent employs counterweight members that hang below the gate barrier to create a gravitational counterbalance. These counterweights generate a moment that biases the gate toward closure and simultaneously provide support against external forces attempting to hold the gate open, leveraging gravitational force rather than mechanical contact surfaces.
3Device complexity
If conventional hinge designs are used, then the structure is simple, but security is compromised when gate is held open
Solution Approach 1:
The counterweight members serve as intermediary elements that provide security independent of the latch mechanism. When the gate is held open by the counterweights, the security function is maintained through the gravitational bias toward closure rather than relying solely on the latch, adding a layer of security without significantly increasing structural complexity.
Solution Approach 2:
The counterweight members create a preliminary anti-action force that constantly biases the gate toward the closed position. This gravitational counterforce acts in advance to prevent the gate from being held open unintentionally, providing security before the latch is even engaged by creating a natural tendency toward closure.
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
Enhances security by resisting external torques and ensuring the gate remains closed without relying solely on a latch, while minimizing wear and improving manufacturing simplicity.
Implementation Method 1
a spring mechanism to bias the hinge toward closure
Implementation Method 2
the first ramp is inclined downward away from the first receptacle in a first direction
Implementation Method 3
a first ramp disposed adjacent the first receptacle, where the first ramp is inclined downward away from the first receptacle
Data Source
AI summary
A gate includes a gate barrier, an upper hinge configured to rotatably support the gate barrier about a rotation axis, and a lower hinge configured to rotatable support the gate barrier about the rotation axis. The upper hinge portion may include a first upper hinge portion having a first receptacle and a first ramp disposed adjacent the first receptacle, and a second upper hinge portion having an upper hinge projection configured to engage the first receptacle to inhibit rotation of the first upper hinge portion. The lower hinge may include a first lower hinge portion coupled to the gate barrier, the first lower hinge portion having a receptacle and a lower hinge projection extending from a base of the receptacle, and a second lower hinge portion having an annular projection configured to engage the receptacle and receive the lower hinge projection.