Laptop Hinge Sleeve Assembly for Ventilation and Repairability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing laptop hinges with press-in unibody designs face challenges in handling stresses and loads, leading to longer hinge caps that obstruct ventilation, limit material choices, and make repairs difficult due to the undetachable nature of the hinge shaft and cap.
Innovation Solution
The introduction of a sleeve that is inserted into the hinge cap, forming an interface with the hinge shaft, allowing for a shorter cap length that improves ventilation and enables detachability for easier repair and replacement, using materials like stainless steel or magnesium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a press-in unibody hinge design is used to handle stresses and loads, then the hinge cap length increases, but this obstructs ventilation and limits material choices
Solution Approach 1:
The hinge assembly is segmented into distinct components: a hinge cap, a separate sleeve inserted into the cap, and a hinge shaft. This segmentation allows the sleeve to bear the mechanical stresses and loads while the cap can be optimized for ventilation and aesthetics, resolving the contradiction between strength and ventilation area.
Solution Approach 2:
A sleeve is introduced as an intermediary component between the hinge cap and the hinge shaft. The sleeve acts as a mediator that handles the stress and load transmission, allowing the hinge cap to be shorter and not obstruct ventilation, while still maintaining the required structural strength through the sleeve-shaft interface.
2Strength
If a press-in unibody hinge design is used, then the hinge cap length increases, but this limits material choices to softer materials
Solution Approach 1:
By segmenting the hinge into cap, sleeve, and shaft components, the design allows different materials to be used for each part. The sleeve can be made from high-strength materials like stainless steel or magnesium to handle loads, while the cap can use softer, more versatile materials for aesthetic and functional purposes, thus expanding material selection versatility.
Solution Approach 2:
The hinge assembly effectively creates a composite structure where the sleeve (potentially stainless steel or magnesium) and the cap (softer material) work together. This composite approach allows leveraging the high strength of metal alloys while maintaining the formability and aesthetic qualities of softer materials, resolving the material selection limitation.
3Reliability
If the hinge shaft is pressed into the hinge cap, then the connection is secure, but repairs become difficult due to undetachability
Solution Approach 1:
The segmentation of the hinge into cap, sleeve, and shaft allows for controlled disassembly. The sleeve can be designed with features enabling it to be removed from the cap using specialized tools, while maintaining a secure press-fit connection during normal use. This resolves the contradiction by providing both connection security and repairability through the intermediate sleeve component.
Solution Approach 2:
The sleeve serves as an intermediary that facilitates both secure connection and controlled detachment. During normal operation, the press-fit provides reliable connection security. During repair, the sleeve can be removed from the cap using extraction tools, allowing the hinge to be serviced while maintaining connection integrity during use.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Hinges for electronic devices are disclosed herein. An example hinge includes a bracket capable of being coupled to a first portion of the electrical device. The bracket has a barrel defining a first opening. The hinge also includes a shaft in the first opening. The shaft is rotatable in the first opening. The hinge further includes a sleeve capable of being inserted into a bore in a second portion of the electronic device. The sleeve defines a second opening to receive a portion of the shaft.