Rotatable bath chair
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Solution Overview
Problem
Existing rotatable bath chairs experience increased friction resistance and reduced smoothness of rotation due to the structure design, which causes inconvenience when users sit on the seat assembly, leading to a large downward pressure that presses against the tripod assembly or seat assembly, resulting in friction and discomfort.
Innovation Solution
A rotatable bath chair design featuring a rotating mechanism with a first and second plane support assembly, utilizing rolling members and accommodating holes to reduce contact forces and friction between the upper and lower limit members and the rotating base, enhancing smooth rotation and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rotating structure similar to a dining table turntable is adopted with balls arranged between the inner ring and outer ring, then the requirement of smooth rotation is met, but when a user sits on the seat assembly, a large downward pressure is formed causing the inner ring to press against the upper part of the tripod assembly or the outer ring to press against the bottom surface of the seat assembly, increasing friction resistance and reducing rotation smoothness
Solution Approach 1:
The patent introduces a pressure relief component as an intermediary element between the inner ring and the tripod assembly/seat assembly. This mediator component receives and distributes the downward pressure from the inner ring, preventing direct contact and high friction between the inner ring and the tripod assembly or seat assembly. The pressure relief component acts as a buffer that maintains the rolling contact functionality while reducing the harmful contact forces that increase friction resistance.
2Adaptability or versatility
If the inner ring is fixed to the seat assembly and the outer ring is fixed to the tripod assembly with balls arranged between them, then the rotating mechanism is established, but the contact force between the rings and support structures increases friction and reduces rotation smoothness
Solution Approach 1:
The pressure relief component serves as a mediator that enables the rotating function to be maintained while improving rotation smoothness. It allows the inner ring to rotate relative to the tripod assembly or seat assembly through rolling contact with the pressure relief component, rather than direct contact, thus maintaining adaptability while reducing friction and improving ease of operation.
Solution Approach 2:
The patent changes the physical parameters of the contact interface by introducing the pressure relief component with specific geometric features (such as curved surfaces or rolling elements). This parameter change transforms the contact mode from direct sliding or pressing contact to rolling contact, which significantly reduces friction coefficients and improves rotation smoothness while preserving the rotating function.
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 reduces friction and noise during rotation, providing a smoother and more comfortable experience by spacing apart the limit members from the rotating base, while maintaining structural compactness and durability against water exposure.
Implementation Method 1
the first upper ring and the first lower ring are in rolling connection by means of the first rolling member to reduce the friction
Data Source
AI summary
A rotatable bath chair is disclosed, including a tripod assembly, a seat assembly and a rotating mechanism. The seat assembly is located above the tripod assembly. The rotating mechanism is arranged between the tripod assembly and the seat assembly, and includes a rotating base, a rotating shaft, an upper limit member and a first plane support assembly. The upper limit member is connected to an upper end of the rotating shaft, and is arranged on the seat assembly. The rotating base is arranged on the tripod assembly, and the rotating shaft passes through the rotating base in a vertical direction. The first plane support assembly is arranged between the upper limit member and the rotating base, and includes a first upper ring, a first rolling member and a first lower ring which are arranged vertically.