Hinge Assembly Two-Phase Opening Mechanism
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Solution Overview
Problem
Conventional hinges restrict the opening angle of doors to around 90 degrees due to interference between the door body and frame, limiting their operational range.
Innovation Solution
A hinge assembly featuring a two-phase door opening mechanism with a curved plate structure joint base, hooks, and a torsion spring, allowing for a larger opening range up to 180 degrees through multi-axis switching and snap-fit connections, and optionally incorporating a force sensor and electronic lock for enhanced safety and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional hinges are used for door mounting, then the door can be opened, but the opening angle is limited to around 90 degrees due to interference between door body and frame
Solution Approach 1:
The hinge assembly is divided into multiple functional modules: door frame shaft base, joint base with curved plate structure, door body shaft base, and hooks. Each module performs a specific function in the two-phase opening mechanism, allowing the complex motion to be broken down into manageable segments that achieve 180 degrees opening without requiring overly complex individual components
Solution Approach 2:
The hinge assembly transitions from a static single-axis rotation to a dynamic two-phase motion system. The first phase uses the guide slot for constrained linear motion, then transitions to the second phase with rotational motion around the main shaft hole. This dynamic adaptation of motion modes enables the door to open to 180 degrees while maintaining reasonable structural complexity
2Ease of operation
If a two-phase door opening mechanism with hooks and snap-fit connections is implemented, then the opening range increases to 180 degrees, but the device complexity increases
Solution Approach 1:
The hooks are rotatably mounted on the joint base and nest within the structure during operation. The catching parts of the hooks engage with corresponding features on the door body shaft base, allowing the locking mechanism to be integrated within the existing hinge components rather than adding separate external locking devices, thus managing complexity while achieving extended opening range
Solution Approach 2:
The curved plate structure of the joint base acts as an intermediary between the door frame and door body. It translates the motion from the first phase (constrained by guide slot) to the second phase (rotation around main shaft hole), enabling the two-phase opening mechanism while keeping the overall structure manageable through this mediating component
3Reliability
If limit posts and guide slots are used to constrain motion, then the door opening is controlled, but friction force limits the engaging force of hooks
Solution Approach 1:
The hinge operation occurs in two distinct periodic phases: first phase with motion constrained by guide slot and limit posts, and second phase with rotation around the main shaft hole. The torsion spring periodically engages and disengages the hooks from the catching parts, creating periodic locking and unlocking actions that maintain reliable motion control while overcoming friction limitations through the periodic force application
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 smooth and stable operation with a larger opening range, improved safety performance, and compact design, allowing for concealed installation and real-time monitoring of door component states.
Implementation Method 1
a torsion spring is provided over a rotating shaft of the hook to press an end of the catching part of the hook against a cambered surface of the hook groove
Implementation Method 2
the hooks are deformed and disengaged from the hook grooves
Data Source
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AI summary
The present invention discloses a hinge assembly and a door structure, relates to the technical field of hardware fittings, and solves the problem of how to improve the reliability and flexibility of door rotation. The technical solution is characterized by including: door frame shaft bases each having a first main shaft hole and a first guide slot; a joint base which is of a curved plate structure with shaft channels being arranged at two ends respectively and upper and lower end faces being provided with limit posts matching the first guide slot in the door frame shaft base, one of the shaft channels being rotatably connected to the first main shaft holes; hooks rotatably mounted to the upper and lower end faces of the joint base. The reliability and flexibility of the structure is improved through a two-phase door opening operation.