Elastic Positioning Tongue Reduces Abrasion in Portable Memory Slides
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Solution Overview
Problem
Existing portable memory storage devices suffer from abrasion issues between the shell and body components, leading to disengagement problems, reduced service life, and increased production costs due to complex assembly processes and the use of threaded elements.
Innovation Solution
A portable extension memory storage device design featuring a body with slide grooves and elastic positioning tongues, and a slide positioning member with inner positioning ribs, which reduces abrasion and allows for secure engagement without threaded elements, simplifying assembly and reducing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If hard material stopping plates and guide blocks are used for positioning, then positioning precision is achieved initially, but abrasion occurs over time leading to disengagement and reduced reliability
Solution Approach 1:
The patent changes the material parameter from hard material to soft elastic material for the positioning tongue, and changes the geometric parameter from flat surface to arc-shaped surface. This allows the positioning tongue to deform elastically during sliding, reducing abrasion while maintaining positioning precision through the arc-shaped guidance.
Solution Approach 2:
The patent uses a composite structure combining hard guide blocks with soft elastic positioning tongues. The hard guide blocks provide structural support and guidance, while the soft elastic positioning tongues provide friction-based positioning and reduce abrasion through elastic deformation.
2Strength
If threaded elements and multiple components are used for assembly, then structural strength is improved, but device complexity and production cost increase
Solution Approach 1:
The patent merges the positioning function and the engagement function into a single integrated structure. The arc-shaped positioning tongue serves both to guide the sliding motion and to provide the engagement force, eliminating the need for separate threaded elements and reducing assembly complexity.
Solution Approach 2:
The patent extracts and eliminates unnecessary components such as threaded elements and multiple guide blocks from the design. The essential positioning and engagement functions are achieved through the simplified arc-shaped positioning tongue structure, reducing the number of parts and assembly steps.
3Force
If hard material components are used for sliding engagement, then initial engagement firmness is achieved, but abrasion reduces service life
Solution Approach 1:
The patent changes the material parameter from hard to soft elastic material for the positioning tongue, enabling elastic deformation during engagement. This maintains sufficient engagement force through elastic recovery while significantly reducing abrasion and extending service life.
Solution Approach 2:
The patent converts the potential harm of soft material (insufficient engagement force) into a benefit by utilizing elastic deformation. The elastic positioning tongue deforms during engagement to provide smooth motion, then recovers to maintain firm engagement, transforming what could be a weakness into a strength.
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 design ensures assured and firm engagement, extends the device's service life by minimizing abrasion, and simplifies assembly, thereby improving user convenience and product competitiveness.
Implementation Method 1
the top surface of the body includes two elastic positioning tongues. The respective positioning tongues are elastically deformed in a direction vertical to the top surface of the body
Data Source
AI summary
A portable extension memory storage device comprises a body and a slide positioning member. The body includes an elastic positioning tongue. The slide positioning member includes a positioning rib to be engaged into a positioning concave in the positioning tongue. With the elastic positioning tongue, the abrasion can be reduced, and the service life can be extended. The positioning concave offers an assured and firm engagement to improve the convenience in use. The assembly of the portable extension memory storage device can be finished without using any other threaded elements or locking elements, thus reducing the material and labor cost.