Biaxial Hinge with Sinking Keyboard and Rubber Feet
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Solution Overview
Problem
Conventional biaxial hinges in tablet notebook PCs fail to prevent the keyboard portion and rubber feet from protruding when the device is used in a folded state, leading to erroneous operations and hindered folding due to contact with the surface or other casings.
Innovation Solution
A biaxial hinge design featuring a synchronous rotation mechanism, friction torque generating mechanism, and sucking mechanism that allows the keyboard portion and rubber feet to sink into the first casing, ensuring they do not protrude and enabling smooth opening and closing of the casings to 360 degrees, with the ability to automatically maintain a predetermined angle without a latching mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the keyboard portion and rubber feet are provided on the first casing, then the device can function as a notebook PC and tablet PC, but the keyboard portion and rubber feet protrude from the upper surface of the first casing when folded, causing erroneous operations and hindering folding
Solution Approach 1:
The keyboard portion and rubber feet are designed to dynamically change their position relative to the first casing. Through the sucking mechanism and cam member, these components can sink into or protrude from the first casing depending on the opening/closing angle, transforming from a static structure to a dynamic one that adapts to different usage states
Solution Approach 2:
The system automatically adjusts the position of the keyboard portion and rubber feet based on the opening/closing angle of the casings. The sucking mechanism and cam member work together to enable the components to sink or protrude automatically without manual intervention, making the system self-regulating
2Stability of the object's composition
If rubber feet are provided on the lower surface of the first casing, then the device can provide stable support, but the rubber feet touch the backside of the second casing when folded, preventing the casings from folding to a horizontal position
Solution Approach 1:
The rubber feet are designed to dynamically adjust their position relative to the first casing. Through the sucking mechanism, the rubber feet can sink into the first casing when the device is folded, preventing contact with the second casing and enabling horizontal folding, while protruding when needed for stable support
3Stability of the object's composition
If a latching mechanism is added to maintain a predetermined angle, then the device can stabilize at specific positions, but the device complexity increases
Solution Approach 1:
The system uses the opening/closing motion of the casings itself to drive the sucking mechanism and cam member, which automatically position the keyboard portion and rubber feet at appropriate locations. The system leverages its own operational motion to achieve the positioning function, eliminating the need for separate latching mechanisms
Solution Approach 2:
The sucking mechanism and cam member serve multiple functions: they control the positioning of the keyboard portion, control the positioning of the rubber feet, and enable automatic adjustment based on opening/closing angle. This multi-functionality replaces what would otherwise require multiple separate mechanisms
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 biaxial hinge design prevents erroneous operations by keeping the keyboard and rubber feet submerged, allowing for seamless 360-degree operation and stable stopping of the casings at any angle, enhancing usability and eliminating the need for a latching mechanism.
Implementation Method 1
a cam member attached to the first hinge shaft, wherein the cam member is rotatable along with opening and closing operations of the first casing and said second casing
Implementation Method 2
elastic means for urging a sliding movement of the actuating member in one direction
Implementation Method 3
friction torque generating mechanism, and sucking mechanism that allows the keyboard portion and rubber feet to sink into the first casing
Data Source
AI summary
In order to provide a biaxial hinge and terminal device which ensure that a first and a second casings can open and close 360 degrees relative to each other, as well as enable a keyboard portion and rubber feet to sink relative to the upper surface of the first casing, from a predetermined opening/closing angle, the biaxial hinge comprises a biaxial hinge portion and an actuating mechanism for actuating operating mechanism(s) working on keyboard and rubber feet. Further, the actuating mechanism comprises a cam part moving in association with the movement of the biaxial hinge portion and together with opening/closing operations of the first and the second casings, and a slide part of which an end contacts with the cam part. The slide part is further provided on the attaching plate attached to the first and the second hinge shafts so as to start moving from a predetermined opening/closing angle.