Air Register Friction Mechanism for Stable Fin Tilt Load
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing air-conditioning registers face issues with load stability due to temperature variations, affecting the operation load and tilt load, leading to inconsistent performance in different temperature conditions.
Innovation Solution
The air-conditioning register incorporates a load generating mechanism with a pressure receiving portion, a pressing member, and a spring, where the pressing member and pressure receiving portion are made of hard resin materials, ensuring direct contact and reduced temperature influence, thereby maintaining consistent load generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If an elastic body is used in the load generating mechanism, then the pressing member can be pressed against the pressure receiving surface to generate load, but the elasticity of the elastic body is easily affected by air temperature causing operation load and tilt load to vary with temperature
Solution Approach 1:
The patent changes the material parameter from elastic body to hard resin material. This material substitution eliminates temperature-dependent elasticity variations, ensuring that the pressing member maintains consistent contact pressure with the pressure receiving surface across different temperature conditions, thereby stabilizing both operation load and tilt load
Solution Approach 2:
The patent employs hard resin material for both the pressing member and pressure receiving surface, creating a composite contact interface that resists temperature-induced property changes. This material combination provides stable friction characteristics and consistent load generation regardless of ambient temperature variations
2Force
If the elastic body becomes softer in summer, then the tilt load becomes smaller, but the movable fin becomes difficult to hold at the tilt angle set by operation of the operation knob
Solution Approach 1:
The patent changes the material parameter from temperature-sensitive elastic body to temperature-stable hard resin material. This ensures that the friction-based load generating mechanism maintains consistent tilt load across temperature variations, preventing the movable fin from drifting from its set tilt angle while still allowing smooth operation
3Reliability
If the pressing member and pressure receiving portion are made of hard resin materials and directly contact, then temperature influence is reduced and load generation becomes consistent, but the structure becomes more rigid
Solution Approach 1:
The patent changes the material parameter to hard resin material with appropriate friction characteristics. This material selection provides both temperature stability for reliable load generation and sufficient surface compliance through friction to accommodate minor misalignments and maintain smooth operation
Solution Approach 2:
The patent extracts the elastic body from the load generating mechanism and replaces it with direct contact between hard resin surfaces. This elimination of the elastic intermediary simplifies the structure while maintaining the necessary load generation function through friction between the pressing member and pressure receiving surface
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
This configuration stabilizes the load generated, improving operation feeling and preventing unintended tilting of the movable fin, regardless of temperature changes, ensuring consistent performance across varying conditions.
Implementation Method 1
the spring generates a load between the pressing member and the pressure receiving portion by urging the pressing member toward a side approaching the pressure receiving surface and pressing the pressing member against the pressure receiving surface
Implementation Method 2
the pressing member and the pressure receiving portion are each formed of a hard resin material and the pressing member is directly in contact with the pressure receiving surface to generate the load
Data Source
AI summary
An air-conditioning register includes: a movable fin; an operation knob; and a transmission mechanism. A load generating mechanism is provided in a middle of a force transmission path in the transmission mechanism. The load generating mechanism includes a pressure receiving portion, a pressing member, and a spring. The pressure receiving portion has a pressure receiving surface. The pressing member rotates with respect to the pressure receiving portion as the operation knob rotates. The spring generates a load between the pressing member and the pressure receiving portion by urging the pressing member toward a side approaching the pressure receiving surface and pressing the pressing member against the pressure receiving surface. The pressing member and the pressure receiving portion are each formed of a hard resin material, and the pressing member is directly in contact with the pressure receiving surface to generate the load.