Vehicle Air Vent Roller Knob Volume Control Mechanism

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Solution Overview

Problem

Modern vehicle air vents face challenges in integrating aesthetically into limited instrument panel spaces while providing efficient control over airflow direction and volume, often requiring multiple control elements which complicates design and operation.

Innovation Solution

A vehicle air vent design featuring a volume control door, a primary vane, and a roller knob connected via gear shafts and pivot shafts, allowing for independent control of airflow direction and volume through a single, intuitive control mechanism, with secondary vanes for side-to-side airflow adjustment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If multiple control elements are used for airflow direction and volume control, then control precision is improved, but device complexity increases

Engineering Contradiction:

Improvecontrol precisionVSAvoiddevice complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent combines multiple control functions (airflow direction control and volume control) into a single integrated control element. The primary vane structure incorporates both the upper and lower control arms that work together to achieve bidirectional airflow control while maintaining a unified design, thereby reducing device complexity while preserving control precision.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The primary vane is designed as a multi-functional control element that can perform both airflow direction control (through upper arm rotation) and airflow volume control (through lower arm rotation). This universal design allows a single component to fulfill multiple control functions, eliminating the need for separate control elements and reducing overall device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Area of stationary object

If space is optimized in instrument panel, then area of air vent is reduced, but ease of operation deteriorates

Engineering Contradiction:

Improvearea of air ventVSAvoidease of operation

Core Design Contradiction:

Area of stationary objectVSEase of operation

Solution Approach 1:

The control mechanism employs a nested structure where the roller knob is mounted on the primary vane, which itself is integrated into the air vent housing. The upper and lower control arms are arranged in a compact configuration within the limited space, allowing the control element to maintain ergonomic operability while occupying minimal instrument panel area.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent utilizes three-dimensional spatial arrangement to maximize control functionality within a compact footprint. The primary vane extends in multiple directions with control arms positioned at different heights and angles, effectively using vertical and lateral dimensions to accommodate control mechanisms without increasing the overall horizontal footprint in the instrument panel.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS11338649B2Air vent for a vehicle

Publication Date: 2022.05.24 GM GLOBAL TECHNOLOGY OPERATIONS LLC

AI summary

A vehicle air vent includes a volume control door pivotally mounted in a housing, a primary vane pivotally mounted in the housing to direct an air flow from an outlet of the vehicle air vent in an up/down direction, and a roller knob mounted on the primary vane and connected to the volume control door such that a rotation of the roller knob causes a rotation of the volume control door.