Sliding Display Mechanism With Parallel Springs for High Stroke
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional rollable electronic devices using the link method experience force loss, limited stroke implementation, and permanent deformation of springs due to misalignment between the compression/tension direction of the spring and the sliding direction of the display.
Innovation Solution
A sliding device with a parallel stacked arrangement of elastic members, where the direction of compression/tension aligns with the sliding direction, allowing for high stroke implementation and reduced permanent deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the link method is used to generate sliding force, then the spring can be mounted perpendicular to the driving direction, but force loss occurs because the spring compression/tension direction does not align with the sliding direction
Solution Approach 1:
The patent extracts the link structure from the force transmission path, eliminating the directional conversion mechanism. The spring is mounted directly in the sliding direction without perpendicular linkage, removing the source of force loss while maintaining manufacturing flexibility
Solution Approach 2:
Instead of mounting the spring perpendicular to the sliding direction and using a link to convert force direction, the patent inverts the approach by mounting the spring parallel to the sliding direction, eliminating the need for directional force conversion and preventing force loss
2Ease of manufacture
If the link structure is used to generate sliding movement, then the spring can be positioned perpendicular to the driving direction, but the stroke is limited above a certain level
Solution Approach 1:
The link structure that limited stroke is extracted and removed from the system. The spring is positioned directly in the sliding direction, allowing the full expansion and compression range of the spring to translate into sliding stroke without geometric constraints
Solution Approach 2:
The spring positioning is inverted from perpendicular to parallel relative to the sliding direction. This inversion allows the spring's full length change to directly contribute to the sliding stroke, enabling high-stroke implementation
3Force
If the spring is used up to its design limit to generate sufficient sliding force, then the required force can be achieved, but permanent deformation occurs in the spring
Solution Approach 1:
The force generation system is segmented into multiple components working in parallel: the spring provides elastic force within its safe operating range, while the elastic deformation of the housing structure and guides provides additional force. This segmentation allows the spring to operate below its design limit, preventing permanent deformation
Solution Approach 2:
The housing structure and guides are designed with elastic deformation capabilities that act as a cushion, absorbing peak forces and preventing the spring from being overloaded. This beforehand cushioning protects the spring from exceeding its elastic limit
4Length of moving object
If a parallel stacked arrangement of elastic members is used, then high stroke can be implemented and force loss prevented, but the device complexity increases
Solution Approach 1:
The housing structure serves multiple functions: it provides the sliding guide, acts as a spring mount, and functions as an elastic element itself. The guides also serve dual purposes of constraining motion and providing elastic force. This multi-functionality reduces the number of separate components needed
Solution Approach 2:
The housing, guides, and spring mounting structure are merged into an integrated assembly. The guides are combined with the housing structure, and the spring mounting is integrated into the guide assembly, reducing overall device complexity while maintaining high-stroke capability
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 force loss and enables high stroke implementation while minimizing spring deformation, suitable for narrow structures.
Implementation Method 1
one or more elastic members disposed on the guides... configured to cause the second housing to move elastically
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
An electronic device according to an embodiment of the present disclosure may comprise: a first housing; a second housing coupled to be slidable with respect to the first housing; a display of which the area visible to the outside increases or decreases as the second housing slides; and a sliding device which has an end coupled to the first housing and the other end coupled to the second housing and which enables the second hosing to elastically move, wherein the sliding device comprises a first plate, a second plate, a plurality of guides, and at least one elastic member arranged on the guides, at least one of the plurality of guides is coupled to the first housing, and at least one of the plurality of guides is coupled to the second housing.