Cam-Pin Coupling Assembly for Foldable Screen Support
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Solution Overview
Problem
Foldable devices face structural stability and functionality issues due to inadequate support and deformation in their coupling assemblies, leading to wrinkles and reduced service life.
Innovation Solution
A coupling assembly with a pin shaft and cam structure that allows rotation and translation within a non-standard pin hole, providing adjustable support and reducing deformation by accommodating different connection spaces and orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a standard pin hole is used to connect the pin shaft, then the structure is simple and easy to manufacture, but the coupled object lacks sufficient support space causing wrinkles and deformation
Solution Approach 1:
The pin hole is designed with non-standard dimensions where the aperture in the predetermined plane is larger than the outer diameter of the pin shaft. This parameter change allows the pin shaft to translate within the pin hole while maintaining rotational connection, providing adjustable support space for the coupled object and preventing wrinkles and deformation without complicating the manufacturing process
2Stability of the object's composition
If the pin shaft is fixed firmly in the pin hole, then rotational connection is stable, but the coupled object cannot accommodate different connection spaces leading to deformation
Solution Approach 1:
The connection between the pin shaft and pin hole is designed to allow both rotation and translation. The pin shaft can rotate within the pin hole while also translating along the axis perpendicular to the predetermined plane. This dynamic capability enables the coupling assembly to adapt to different connection spaces and orientations while maintaining rotational stability for reliable operation
3Stability of the object's composition
If the aperture of the pin hole equals the outer diameter of the pin shaft, then the connection is tight and stable, but there is insufficient space for the coupled object causing wrinkles
Solution Approach 1:
The pin hole aperture is intentionally designed to be larger than the pin shaft outer diameter in the predetermined plane. This parameter change creates clearance that provides sufficient accommodation space for the coupled object, preventing wrinkles and deformation while the cam structure maintains connection stability through controlled contact
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 enhances the stability and usability of foldable screens by preventing wrinkles and deformation, extending the service life and improving user experience.
Implementation Method 1
a first cam 111 and a first pin shaft 112 at an end of the first connector 11, the first pin shaft 112 being arranged on a side of the first cam 111
Data Source
Figure 1~3
Figure 4
Figure 5
AI summary
A coupling assembly includes a support part (10). The support part includes: a first connector (11) including a first cam (111) and a first pin shaft (112) arranged on a side of the first cam; and a second connector (12) including a support plate (121), a connection block (122) and a support projection (123) having a support surface (124). The connection block has a pin hole (125) with an aperture larger than an outer diameter of the first pin shaft in a predetermined plane parallel to the support plate; the first pin shaft is mounted in the pin hole; the first connector assumes a posture paralleling the predetermined plane, and the first cam is in contact with a first position of the support surface; the second connector assumes a posture intersecting the predetermined plane, and the first cam is in contact with a second position of the support surface.