Quick-Release Spindle Mount for Air Damper Rotary Drive

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Solution Overview

Problem

Existing air flap rotary drive systems require numerous rotations of the drive shaft to fix or release an axle, making the process time-consuming and laborious.

Innovation Solution

An axle mount with a quick-clamping mechanism, where the drive shaft and drive shaft guide function as a quick-release device, allowing for axial movement and rotation to secure or release the axle with minimal rotations, incorporating a sector thread for positive locking and a reset device for automatic release.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional spindle drive with pressure yoke and tension yoke is used, then the axle can be securely fixed, but a large number of rotations of the drive shaft are required to secure or release the axle, making the process time-consuming

Engineering Contradiction:

Improveaxle fixation securityVSAvoidtime for securing and releasing axle

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The drive shaft is made axially movable relative to the drive shaft guide, allowing dynamic adjustment between engaged and disengaged states. This enables rapid transition between secured and released states without requiring multiple rotations, directly resolving the time-consuming issue while maintaining secure fixation through the positive-locking mechanism

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The coupling between drive shaft and drive shaft guide is segmented into two functional zones: a positive-locking contour for secure engagement and an axial movement capability for rapid release. This segmentation allows the system to achieve both reliable fixation and quick release by separating the locking function from the release mechanism

Inventive Principle:

Principle #1Segmentation

2Productivity

If the drive shaft is designed to allow axial movement for quick release, then the release process becomes faster, but the mechanism complexity increases due to the positive-locking contour and guide structure

Engineering Contradiction:

Improvespeed of axle releaseVSAvoiddrive shaft and guide structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The positive-locking contour and the axial movement capability are merged into a single integrated mechanism. The drive shaft itself serves both as the rotating element for engagement and as the axially movable element for quick release, eliminating the need for separate complex release mechanisms and reducing overall device complexity

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The drive shaft performs multiple functions: it transmits rotational motion for positioning, provides axial movement for quick release, and engages with the positive-locking counter-contour for secure fixation. This multi-functionality reduces the need for additional components, thereby limiting the increase in device complexity

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4443036A1Spindle support for a ventilation flap rotary drive and ventilation flap rotary drive

Publication Date: 2024.10.09 SIEMENS SCHWEIZ AG

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AI summary

A shaft mount (10) intended for fixing to an axle (20) is specified, comprising a pull bar (12) and a pressure bar (14) movable relative to the pull bar (12) by means of a drive shaft (30), wherein the drive shaft (30) is guided in a drive shaft guide (34) in the pull bar (12), and which is characterized in that the drive shaft (30) and the drive shaft guide (34) function as a quick-release clamping device, as well as an air damper rotary drive (74) with such a shaft mount (10).