Gravity Latch with Remote Pull Line and Solar Lighting
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Solution Overview
Problem
Current gate latching systems lack user-operable components for opening and closing, and there is a need for an aesthetically improved and functional interface on the side opposite the pull knob.
Innovation Solution
A gate latch system with an elongated tube and cap assembly, a coil spring, and a pull knob with lighting elements, allowing user operation and automatic re-latching, featuring a gravity latch mechanism with adjustable mounting and a user-friendly interface for manual operation, along with solar-powered lighting for enhanced usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple vertical latch mechanism is used, then the device complexity is reduced, but the ease of operation deteriorates because there are no user-operated components for opening or closing the latch
Solution Approach 1:
A pull line is introduced as an intermediary element that transmits force from the user-operated pull knob on one side of the gatepost to the latch plate on the other side. This allows remote operation of the latch without adding complex mechanical linkages to the latch mechanism itself.
Solution Approach 2:
The latch mechanism is designed to automatically latch when the gate closes, utilizing the gate's own motion to engage the latch plate with the latch bar. The spring-loaded mechanism provides automatic re-latching without requiring user intervention, simplifying the overall system while maintaining ease of operation.
2Ease of operation
If a pull line assembly with spring is used, then the ease of operation improves with remote latch release, but the device complexity increases due to additional components on one side
Solution Approach 1:
The pull line, spring, tube, and cap elements are merged into a single integrated assembly that fits through the gatepost. This consolidation reduces the number of separate components and simplifies installation while maintaining the remote operation capability.
Solution Approach 2:
The pull line assembly serves multiple functions: it provides the pulling force to release the latch, the spring provides return force and resistance, the tube contains and protects the line, and the cap elements secure the assembly. This multi-functionality reduces the need for separate components.
3Ease of operation
If lighting elements are added to the pull knob, then the ease of operation improves for nighttime use, but the use of energy increases
Solution Approach 1:
Solar-powered lighting elements are integrated into the pull knob or gatepost, allowing the system to generate its own power. The solar cells convert sunlight into electrical energy to illuminate the area during nighttime operation, eliminating the need for external power sources or batteries.
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 user-operable and aesthetically enhanced gate latching and unlatching with automatic re-latching functionality, improving user convenience and safety through adjustable and illuminated interfaces.
Implementation Method 1
a coil spring having a spring length surrounding the latch line within the elongated tube with a first end bearing on the closed end of the first cap element and a second end bearing on a crimp element crimped to the latch line
Implementation Method 2
Gravity keeps the latch plate in the closed position. Gravity then urges the latch plate down over the latch bar providing a latched gate
Data Source
AI summary
A gate latch system has a latch line operating sub-assembly, a gravity latch mechanism, and a latch bar. The latch line operating sub-assembly has a tube of a first length having male threading along the entire length, allowing the tube to be trimmed to length for gateposts of different widths. The system comprises lighting elements in handles and knobs to aid a user in operation.