Compact Hinge Device with Sliding Rotary Unit
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Solution Overview
Problem
Conventional rotatable hinge devices for mobile apparatuses are bulky, occupy large space, and expose installation lines, compromising the compactness and aesthetics of mobile devices like camcorders.
Innovation Solution
A compact hinge device featuring a sliding unit with a rotary unit that allows the display part to rotate and slide, incorporating a sliding body with curved design, cam mechanisms for free stop functionality, and a detector for rotational angle sensing, which can be integrated within the device to minimize external exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a conventional rotatable hinge device is used, then the display part can be rotated and adjusted, but the device occupies large space and has exposed installation lines
Solution Approach 1:
The hinge device is nested within the main bracket structure, with the cam mechanism and elastic member integrated into the bracket's cavity. The shaft is rotatably engaged within the bracket, and the cam protrusion fits into the cam recess formed by the bracket structure itself, creating a compact nested arrangement that reduces overall volume while maintaining full rotational functionality
Solution Approach 2:
The invention merges the hinge functionality directly into the main bracket by forming the cam recess as an integral part of the bracket structure rather than using separate components. The elastic member is positioned within the bracket's cavity, and the shaft serves dual purposes as both the rotation axis and the mounting element for the cam mechanism, consolidating multiple functions into a unified structure
2Shape
If a conventional rotatable hinge device is used, then the display part can be rotated, but installation lines are exposed which compromises aesthetics
Solution Approach 1:
The cam mechanism is extracted from the external environment and fully integrated within the main bracket's internal cavity. The cam protrusion and cam recess are positioned such that all mechanical components are contained within the bracket structure, eliminating any external installation lines or visible mechanical parts, thus achieving a clean aesthetic appearance while maintaining the complex internal mechanism
3Volume of moving object
If the hinge device is made compact, then space is reduced, but the detector for rotational angle sensing may not be properly positioned
Solution Approach 1:
The detector is positioned in the vertical dimension above the cam mechanism, utilizing the vertical space within the bracket's cavity rather than requiring additional horizontal space. This vertical arrangement allows the detector to sense the rotational angle through the cam protrusion's vertical displacement or angular position, achieving precise measurement within the compact horizontal footprint of the hinge device
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 solution enables a more compact and aesthetically refined mobile apparatus design by reducing the space required for the hinge and hiding the installation lines, allowing for smooth and adjustable display part operation.
Implementation Method 1
an elastic member (15) disposed between the pair of cams (13 and 14) and the penetrating opening (11a) to press the main bracket (11)
Implementation Method 2
the lower cam (14) and the upper cam (13) are placed into friction contact with each other so that the hinge implements a free stop movement
Data Source
AI summary
A mobile apparatus includes a main body, a display part, and a hinge device. The hinge device opens and closes the display part from the main body and allows the display part to rotate. The hinge device includes a sliding unit that slides with respect to the main body, and a rotary unit rotatably formed with the sliding unit to engage the display part. The hinge device requires less installation space so that the mobile apparatus may be more compact. Furthermore, there is no visible installation line of the hinge device so that the mobile apparatus may have a more refined design.