Monitor Hinge Locking Mechanism for Stable Angle Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display devices experience auto-lift-up issues when adjusting the monitor's angle beyond a certain point due to a loss of balance between the elastic force of the spiral spring and the monitor's load, preventing precise angle adjustment.
Innovation Solution
A display device with a locking unit that includes a cam and cam follower system, which selectively locks the head mount's motion as the connecting block rotates, ensuring the monitor remains stable by engaging rack gears and using a guide unit to direct the cam follower's motion, preventing upward movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the monitor is rotated backwardly to adjust the angle beyond a predetermined angle, then the angle adjustment range is improved, but the balance between elastic force and monitor load is lost causing auto-lift-up
Solution Approach 1:
The locking unit is activated preliminarily when the monitor rotation angle exceeds a predetermined threshold. The cam mechanism detects the excessive angle and engages the cam follower with the rack gear before auto-lift-up occurs, preventing the instability problem in advance rather than correcting it after occurrence.
Solution Approach 2:
The locking unit acts as an intermediary mechanism between the monitor and the stand. When the monitor rotates beyond the predetermined angle, the locking unit engages to prevent further rotation, serving as a mediator that transfers and controls the force between the monitor load and the stand structure.
2Reliability
If a locking unit is added to prevent auto-lift-up, then position stability is improved, but device complexity increases
Solution Approach 1:
The locking unit is merged with the existing hinge assembly structure. The cam is integrated into the connecting block that is already part of the hinge assembly, and the cam follower is combined with the vertical movement guidance structure. This merging approach adds the locking function without creating entirely separate components, thereby limiting the increase in device complexity.
3Manufacturing precision
If the cam mechanism is used for locking, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The cam mechanism serves multiple functions simultaneously: it provides the locking action to prevent auto-lift-up, guides the cam follower's movement path, and defines the engagement/disengagement timing based on the monitor rotation angle. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while achieving precise angle adjustment control.
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
Prevents auto-lift-up, allowing users to adjust the monitor's angle precisely without losing stability, enhancing user satisfaction and enabling a slim structure without increasing the device's thickness.
Implementation Method 1
A display device includes a connecting block rotatably fastened to an end of a stand assembly; a head mount vertically movable with respect to the connecting block; and a locking unit that selectively locks the motion of the head mount as the connecting block rotates. The locking unit may include a cam provided on a rotation shaft of the stand assembly; and a cam follower selectively locked to the head mount, being contacted with the cam.
Implementation Method 2
A display device with a locking unit that includes a cam and cam follower system, which selectively locks the head mount's motion as the connecting block rotates, ensuring the monitor remains stable by engaging rack gears
Data Source
AI summary
A display device is disclosed. A display device includes a connecting block (40) rotatably fastened to an end of a stand assembly (20); a head mount (43) vertically movable with respect to the connecting block (40); and a locking unit that selectively locks the motion of the head mount (43) as the connecting block (40) rotates.