Vehicle Hinge Assembly With Translational-Rotational Sealing Motion
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Solution Overview
Problem
Existing hinge mechanisms for vehicle panels offer either rotational or translational motion, but not both, which hinders sealing performance when rotational motion is required for alignment and compactness.
Innovation Solution
A hinge assembly with a knuckle, mounting plate, passive arm, bevel gear head, and engagement arm that allows both translational and rotational motion, using a detent mechanism to switch between phases for optimal sealing and compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If rotational motion is provided in the hinge mechanism, then the mechanism becomes more compact, but sealing performance deteriorates due to misalignment between the panel and the opening
Solution Approach 1:
The hinge mechanism dynamically transitions between two operational phases: a first phase with primarily translational motion for sealing alignment, and a second phase with rotational motion for compact positioning. This dynamic switching allows the system to optimize for sealing during the initial closing phase and for compactness during the final positioning phase, resolving the contradiction between sealing performance and mechanism compactness
Solution Approach 2:
The hinge operation is divided into periodic phases: an initial phase where the engagement arm translates the mounting plate for alignment, followed by a second phase where the bevel gear engages to provide rotational motion. This periodic action sequence ensures that sealing alignment occurs before rotational compactness, maintaining both sealing performance and compact design
2Reliability
If translational motion is provided without rotational movement, then sealing performance is improved through proper alignment, but the hinge mechanism becomes less compact
Solution Approach 1:
The hinge mechanism dynamically transitions between two operational phases: a first phase with primarily translational motion for sealing alignment, and a second phase with rotational motion for compact positioning. This dynamic switching allows the system to optimize for sealing during the initial closing phase and for compactness during the final positioning phase, resolving the contradiction between sealing performance and mechanism compactness
Solution Approach 2:
The hinge operation is divided into periodic phases: an initial phase where the engagement arm translates the mounting plate for alignment, followed by a second phase where the bevel gear engages to provide rotational motion. This periodic action sequence ensures that sealing alignment occurs before rotational compactness, maintaining both sealing performance and compact design
3Reliability
If both rotational and translational motion are provided, then device complexity increases, but sealing performance and compactness can be achieved simultaneously
Solution Approach 1:
The hinge mechanism is segmented into distinct functional components that operate in sequence: an engagement arm for initial translational motion, a bevel gear head for rotational motion, and a detent bearing assembly for phase transition control. This segmentation allows each component to perform its specific function efficiently, managing overall complexity through modular functional division
Solution Approach 2:
The detent bearing assembly acts as an intermediary mechanism that mediates the transition between the first phase (translational motion) and the second phase (rotational motion). This intermediary component controls the sequential engagement of motion modes, managing the complexity of coordinating both translational and rotational movements through a dedicated transition mechanism
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
The hinge assembly provides effective sealing and compact design by allowing translational motion for alignment and rotational motion for access, enhancing sealing performance and panel alignment during opening and closing.
Implementation Method 1
The bevel gear head includes a plurality of teeth, a detent bearing assembly, and a head receptacle. Teeth of the plurality of teeth are operably coupled to the bevel gear of the mounting plate.
Data Source
AI summary
A hinge assembly includes a knuckle, a mounting plate, a passive arm, a bevel gear head, and an engagement arm. The mounting plate includes a bevel gear and an input shaft. The input shaft is coupled to the knuckle. The passive arm includes a knuckle end and a passive base end. The knuckle end is operably coupled to the knuckle. The bevel gear head includes a plurality of teeth, a detent bearing assembly, and a head receptacle. Teeth of the plurality of teeth are operably coupled to the bevel gear of the mounting plate. The engagement arm includes a gear end, an engagement base end, and a detent. The gear end is operably coupled with both the head receptacle of the bevel gear head and the knuckle. The detent is selectively coupled with the detent-bearing assembly of the bevel gear head.