Cam Profile Guide Part for Slimmer Sliding Terminal
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Solution Overview
Problem
Conventional sliding opening and closing devices for portable terminals, such as cellular phones, become thick due to the inclusion of a plunger and spring, leading to wear and tear and loss of functionality over time, which compromises the device's slim design and portability.
Innovation Solution
A sliding opening and closing device with a cam profile formed on a guide part covering the second plate, featuring an elastic module with a housing, plunger, roller, and spring, where the elastic module is mounted on the second plate to interact with the cam profile, reducing the overall thickness by integrating the cam profile within the guide part and eliminating the need for additional thickness from the plunger and spring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plunger and spring are used to provide elastic force in a conventional sliding opening and closing device, then the opening and closing function is achieved, but the device becomes thick and the components are prone to wear and tear
Solution Approach 1:
The cam profile is integrated into the guide part structure, merging the guiding function and the elastic force generation function into a single component. This eliminates the need for separate plunger and spring assemblies, reducing thickness while maintaining the opening and closing function.
Solution Approach 2:
The elastic force generation function is extracted from the traditional plunger-spring mechanism and relocated to the cam profile structure. The cam profile interacts with the guide part to provide the necessary elastic force, removing the bulky spring component.
2Reliability
If a torsion spring is used with a large working range and small elastic force, then the opening and closing function is maintained, but the torsion spring deforms greatly and becomes easily worn out due to fatigue
Solution Approach 1:
The cam profile is designed with specific geometric parameters that optimize the interaction with the guide part. The cam profile's shape and dimensions are carefully controlled to provide appropriate elastic force and movement range, reducing excessive deformation and fatigue wear on the elastic components.
3Length of moving object
If the cam profile is formed on the guide part covering the second plate, then the overall thickness is reduced, but the complexity of the guide part structure increases
Solution Approach 1:
The guide part is designed to perform multiple functions: it guides the sliding motion of the second plate, provides the cam profile for elastic force generation, and supports the roller mechanism. This multi-functionality reduces the need for additional separate components, effectively managing structural complexity while achieving thickness reduction.
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 device allows for a thinner portable terminal design while maintaining effective sliding functionality, reducing wear on components and enhancing durability by distributing the elastic force efficiently through the cam profile and guide parts.
Implementation Method 1
an elastic module mounted on the second plate, one end of the elastic module being in contact with the cam profile to slide therealong
Data Source
AI summary
The present invention relates to a sliding opening and closing device for a portable terminal. The sliding opening and closing device for a portable terminal according to the present invention includes: a first plate; a second plate slidably joined to the first plate; a cam profile formed at the first plate along a sliding direction of the second plate; and an elastic module mounted on the second plate, wherein one end of the elastic module is in contact with the cam profile to slide therealong. A guide part is formed at the first plate and the cam profile is formed along an edge portion of the guide part.