Seat frame
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Solution Overview
Problem
Existing seat frames for rotating sofas and swivel chairs face issues with limited bearing capacity, easy deformation, noise during rotation, and inflexible size adjustments, leading to instability and inconvenience in use.
Innovation Solution
A seat frame design featuring a lower and upper base with rotating devices, bearings, and a kidney-shaped track for increased stability and adjustable size, using rollers with a rubber coating to reduce noise and enhance bearing capacity, and incorporating telescopic supports for adaptable installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If steel balls are used in the seat frame for rotation, then the rotating function is achieved, but the bearing capacity is limited and the balls deform easily
Solution Approach 1:
The patent changes the material parameter from steel balls to nylon balls, which have different mechanical properties including higher deformation resistance and self-lubrication characteristics. This material parameter change resolves the contradiction by providing both adequate bearing capacity and resistance to deformation under load.
Solution Approach 2:
The patent uses nylon material which combines strength with self-lubricating properties, creating a composite effect that simultaneously provides bearing capacity and deformation resistance. The nylon material acts as a composite solution that addresses both the load-bearing requirement and the deformation prevention requirement.
2Ease of operation
If steel columns with balls are used for rotation, then the rotating function is achieved, but noise occurs due to collisions between balls and seat frame
Solution Approach 1:
The patent introduces nylon balls as an intermediary element between the steel columns and the seat frame. The nylon material acts as a noise-dampening mediator that absorbs collision impacts and reduces noise generation while still enabling the rotation function through rolling motion.
Solution Approach 2:
The patent converts the harmful collision noise into a beneficial self-lubricating effect. The nylon balls, when subjected to pressure and friction during rotation, generate heat that softens the material slightly, creating a lubricating effect that reduces friction and noise while maintaining smooth rotation.
3Ease of manufacture
If surface holes are used to fix the sofa, then the installation is achieved, but the hole size is limited and not adjustable due to cost and process considerations
Solution Approach 1:
The patent transitions from fixed-size holes to adjustable telescopic supports with movable plates. This dynamic structure allows the support length and positioning to be adjusted according to different installation requirements, providing versatility while maintaining ease of manufacture through a modular design that can be produced using standard machining processes.
4Ease of manufacture
If demountable chair feet are used, then production convenience is improved, but small parts drop during transportation making the swivel chair unusable
Solution Approach 1:
The patent merges the chair feet with the main body through integrated telescopic supports that are part of the unified seat frame structure. This combination eliminates separate small parts that could drop during transportation, while the telescopic mechanism maintains the demountable feature for production convenience. The integrated design ensures all components remain securely attached during handling and transport.
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 significantly enhances the bearing capacity, reduces noise, and allows for adjustable size, resulting in a more stable and user-friendly rotating mechanism suitable for various applications.
Implementation Method 1
an external rubber coating of the bearings reduces noise
Implementation Method 2
the rolling devices roll on a kidney plane, increasing a contact area
Implementation Method 3
a center of the lower base and a center of the upper base are provided with bearings and connected to each other
Data Source
AI summary
The present invention relates to a seat frame, including a lower base; an upper base; and a plurality of rotating devices disposed on the upper base or the lower base and including at least one rotating device capable of horizontally rotating the lower base relative to the upper base. The lower base is connected to the upper base. When the rotating devices make the lower base horizontally rotate relative to the upper base, the upper base and the lower base do not fall off each other. A plurality of connecting devices are disposed on the upper base. The present invention eliminates the noise generated in the rotating process; and a telescopic support enables the size of the seat frame to be adjustable, the installation is simple and convenient, the use effect is good, and it is more stable and is suitable for popularization.