Foldable Terminal Damping Assembly With Differential Interference Fit
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Solution Overview
Problem
Existing damping assemblies in foldable terminals are complex in structure and occupy a large space, which hinders the lightweight and thin design of these terminals.
Innovation Solution
A damping assembly with a simple structure, comprising a damping section with multiple damping parts and a shaft sleeve with varying interference amounts, providing a damping force through friction between the damping section and the shaft sleeve, and designed to occupy a small space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If existing damping assemblies are used to provide damping force, then damping function is achieved, but structure becomes complex and space occupation increases
Solution Approach 1:
The patent combines the damping function with the shaft sleeve structure by integrating damping parts directly into the shaft sleeve. The shaft sleeve includes multiple damping parts (first damping part, second damping part, third damping part) that work together with corresponding shafts to provide damping force, eliminating the need for separate damping mechanisms and simplifying the overall structure.
Solution Approach 2:
The shaft sleeve serves multiple functions: it provides structural support, enables rotation, and simultaneously provides damping through its integrated damping parts. This multi-functional design reduces the number of separate components needed, addressing the contradiction between achieving damping function and maintaining structural simplicity.
2Force
If existing damping assemblies are used to provide damping force, then damping function is achieved, but space occupation increases
Solution Approach 1:
The damping parts are nested within the shaft sleeve structure. The first damping part is arranged on the first shaft and nested within the shaft sleeve, the second damping part is arranged on the second shaft and nested within the shaft sleeve, and the third damping part is arranged on the third shaft and nested within the shaft sleeve. This nesting arrangement allows the damping mechanism to occupy minimal space while still providing effective damping force.
3Ease of manufacture
If damping assembly structure is simplified, then manufacturing and installation are easier, but damping force consistency may be affected
Solution Approach 1:
The patent applies different interference amounts to different damping parts to optimize both simplicity and performance. The first interference amount between the first shaft sleeve part and first damping part, the second interference amount between the second shaft sleeve part and second damping part, and the third interference amount between the third shaft sleeve part and third damping part are all different. This localized differentiation ensures consistent damping force while maintaining simple installation procedures.
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 damping assembly effectively provides a consistent damping force throughout its life cycle, optimizing user experience while enabling a lightweight and thin design for foldable terminals.
Implementation Method 1
The damping assembly includes a damping section and a shaft sleeve sleeved onto the damping section... an interference amount between the first shaft sleeve part and the first damping part is a first interference amount... providing a damping force through friction between the damping section and the shaft sleeve
Data Source
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AI summary
Embodiments of this application provide a damping assembly, a rotating mechanism, and a foldable terminal. The damping assembly has a simple structure and occupies a relatively small space, which is conductive to a lightening and thinning design of a foldable terminal. The damping assembly includes a damping section and a shaft sleeve sleeved onto the damping section, where the damping section includes first damping parts and second damping parts that are arranged in an axial direction of the damping section, and the shaft sleeve includes first shaft sleeve parts and second shaft sleeve parts that are arranged in an axial direction of the shaft sleeve; the first shaft sleeve parts are sleeved onto the first damping parts, and an interference amount between a first shaft sleeve section and a first damping section is a first interference amount; and a second shaft sleeve section is sleeved onto a second damping section, an interference amount between the second shaft sleeve section and the second damping section is a second interference amount, and the second interference amount is less than the first interference amount.