Mobile Terminal Slide Guide Rails for Smooth Low-Friction Operation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing guide devices for sliding units in sliding-type mobile terminals suffer from uneven and rough sliding operations due to friction issues, leading to a shortened lifespan and potential scratches during opening and closing, primarily because of the insert-injection method using PolyOxyMethylene (POM) materials.
Innovation Solution
A guide device with independently formed guide rails made of a polymer material, such as POM, are assembled with latch portions on a lower slide, featuring a ' '-shaped cross-section with recessed portions and buffering surfaces to minimize friction and enhance sliding smoothness, and are coupled with a guide plate having rack portions for improved mechanical processibility and structural stiffness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the latch member and injection portion are formed by insert-injection method using POM material, then sliding sensitivity is improved, but severe friction occurs and sliding operation becomes non-uniform
Solution Approach 1:
The guide device is divided into separate components: the guide plate with rack member and the guide rail with injection portion are manufactured independently and then assembled together. This segmentation allows each component to be optimized separately and assembled with precise fitting, reducing friction and improving sliding uniformity while maintaining sliding sensitivity.
2Device complexity
If the rack member and injection portion made of POM are formed by insert-injection, then the structure is simplified, but severe friction and non-uniform sliding occur
Solution Approach 1:
By segmenting the guide device into separately manufactured guide plate and guide rail components that are subsequently assembled, the invention achieves both structural simplicity and sliding smoothness. The separate manufacturing allows for optimized design of each component while the assembly process ensures proper fit and reduced friction.
Solution Approach 2:
The guide rail acts as an intermediary component between the sliding body and the guide plate, providing a smooth sliding surface through its injection portion that reduces direct friction between metal parts while maintaining structural simplicity.
3Ease of manufacture
If insert-injection method is used for latch member and injection portion, then manufacturing is simplified, but scratching occurs and lifespan is shortened
Solution Approach 1:
The separate manufacturing and assembly of the guide plate and guide rail components allows for optimized material selection and processing for each part, reducing scratching during operation while maintaining manufacturing simplicity through modular production.
Solution Approach 2:
The invention uses POM (PolyOxyMethylene) material for the injection portion of the guide rail, which provides self-lubricating properties that reduce friction and scratching. This composite material approach extends the lifespan of the sliding unit while keeping the manufacturing process simple.
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 provides a smooth sliding operation, reduces scratch generation, and extends the lifespan of the sliding unit while allowing for enhanced design flexibility and structural reinforcement, improving the overall performance and durability of the sliding mechanism.
Implementation Method 1
guide rails manufactured independently to be assembled with the latch portions... wherein the guide rails are disposed to extend in a longitudinal direction of the lower slide... made of a polymer material, such as POM... which reduces friction and enhances sliding smoothness by using materials with superior mechanical processibility and lubricity
Data Source
AI summary
A guide device for a sliding unit in a mobile terminal is provided. The guide device includes a lower slide including latch portions formed to open outwards, guide rails manufactured independently to be assembled with the latch portions, wherein the guide rails are disposed to extend in a longitudinal direction of the lower slide, and a guide plate comprising rack portions coupled with the guide rails, wherein the guide plate is disposed to face the lower slide.