Cam-Driven Stand Cover for Easy Display Panel Tilting
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Solution Overview
Problem
Existing display devices lack a convenient and efficient mechanism for mounting and tilting the display panel at various angles, especially for portable devices, which affects user experience and portability.
Innovation Solution
A display device design that includes a stand cover rotatably coupled to a back cover, an elastic member, and a follower shaft, where the stand cover features a cam with a ramp that expands the elastic member upon rotation, allowing semi-automatic folding and unfolding with minimal driving force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mounting structure is designed to allow easy folding and unfolding of the stand cover, then the ease of operation is improved, but the device complexity increases due to additional components like cam, follower shaft, and elastic member
Solution Approach 1:
The elastic member automatically returns the follower shaft to its initial position after the cam completes its rotation, enabling the stand cover to fold back without manual intervention. This self-service mechanism reduces the effort required by the user while maintaining operational simplicity.
Solution Approach 2:
The mounting structure transitions from a static configuration to a dynamic one during operation. The cam rotates to dynamically adjust the position of the follower shaft, enabling the stand cover to unfold to a predetermined angle automatically, thus improving ease of operation.
2Productivity
If a cam mechanism with ramp is used to expand the elastic member for semi-automatic unfolding, then the productivity is improved by reducing driving force, but the device complexity increases due to the cam and follower shaft components
Solution Approach 1:
The cam is pre-designed with a specific ramp profile that automatically guides the follower shaft to the correct position during rotation. This preliminary design of the cam geometry enables the stand cover to unfold to a predetermined angle without requiring real-time control or additional actuators, thus improving productivity.
Solution Approach 2:
The follower shaft acts as an intermediary between the rotating cam and the stand cover. It translates the rotational motion of the cam into linear motion that drives the stand cover to unfold, enabling semi-automatic operation with minimal driving force while maintaining a relatively simple mechanical structure.
3Adaptability or versatility
If the stand cover is designed to tilt the display panel at various angles for comfortable viewing, then the adaptability is improved, but the device complexity increases due to the rotatable mounting structure
Solution Approach 1:
The rotatable stand cover serves multiple functions: it acts as both a mounting structure and a tilting mechanism. By rotating the stand cover to different angles, the display panel can be positioned at various viewing angles, providing adaptability without requiring separate tilting mechanisms, thus avoiding increased device complexity.
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 easy adjustment of the display panel to comfortable viewing angles, improves portability, and reduces noise and vibration associated with the mounting mechanism, while maintaining a stable and secure stand.
Implementation Method 1
an elastic member extending in a direction intersecting a rotation axis of the stand cover, and having one end fixed to the back cover; and a follower shaft fixed to the other end of the elastic member and movable in a longitudinal direction of the elastic member
Implementation Method 2
a cam integrally rotating with the shaft to move the follower shaft, the cam including a ramp that contacts the follower shaft
Implementation Method 3
the ramp may include a nose protruding from the shaft in a direction intersecting the rotation axis, with a distance between the nose and the rotation axis increasing and then decreasing in a rotation direction of the rotation axis, such that the cam may expand the elastic member
Data Source
AI summary
A display device having a back cover coupled to a display panel and a stand cover rotatably coupled to the back cover. The device also includes an elastic member that extends in a direction that intersects the rotation axis of the stand cover. A follower shaft is coupled to the elastic member and is structured to be movable in a longitudinal direction. The stand cover includes a shaft extending toward the rotation axis and is structured to rotate about the rotation axis, and a cam integrally rotating with the shaft to move the follower shaft. The cam includes a ramp that contacts the follower shaft, and the ramp includes a nose protruding in a direction intersecting the rotation axis, where a distance between the nose and the rotation axis increases and then decreases as the stand cover is rotated about the rotation axis.