Elastic Centering Device for Tolerance Compensation in Vehicle Mounting

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Solution Overview

Problem

Existing devices for compensating tolerances between components in vehicle construction, such as between a roof plate and a support structure, face challenges in maintaining precise alignment and secure mounting, especially in unfavorable positions where direct visibility is limited, leading to complex screw member insertion and positioning.

Innovation Solution

A device equipped with an elastic centering arrangement, formed as an elastic contour or body, provides spring force to maintain the device in a nominal position, ensuring easy mounting and alignment without affecting tolerance compensation, using a fastening member with distributed elastic centering members that counteract weight forces and support the device radially.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the device is mounted in unfavorable positions without direct visibility, then the mounting complexity increases and positioning becomes difficult, but adding complex positioning mechanisms increases device complexity

Engineering Contradiction:
Improvemounting easeVSAvoidpositioning mechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The elastic centering arrangement automatically centers the device on the first component through elastic restoring forces without requiring manual intervention or complex positioning mechanisms. The device self-corrects its position by utilizing the elastic deformation and recovery of the centering arrangement, making the mounting process simpler even in unfavorable positions.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The elastic centering arrangement creates a stable equilibrium position where the elastic forces balance the gravitational and mounting forces. By designing the elastic centering arrangement with appropriate stiffness and geometry, the device achieves a stable centered position regardless of mounting orientation, effectively creating an equipotential state for positioning.

Inventive Principle:
Principle #12Equipotentiality

2Measurement precision

If the elastic centering arrangement provides strong spring force to maintain nominal position, then centering precision improves, but the force required for tolerance compensation increases

Engineering Contradiction:
Improvecentering precisionVSAvoidforce for tolerance compensation
Core Design Contradiction:
Measurement precisionVSForce

Solution Approach 1:

The elastic centering arrangement provides localized elastic support at specific points (centering members) rather than uniform support across the entire device. This allows the centering function to be performed with minimal elastic force while maintaining precision, as the centering members only need to provide enough force to maintain radial positioning, not to support the entire device weight or compensate for all tolerances.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The centering function is segmented into multiple discrete centering members distributed around the device periphery. Each centering member handles a portion of the centering task, allowing the system to achieve precise centering through distributed small forces rather than a single large force, thereby reducing the total force requirement for tolerance compensation.

Inventive Principle:
Principle #1Segmentation

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 elastic centering arrangement simplifies the mounting process by maintaining the device in a consistent position, facilitating screw member insertion and tolerance compensation, while ensuring the device remains securely aligned and functional, even in unfavorable installation positions.

Implementation Method 1

The elastic centering arrangement is in particular formed as an elastic contour and/or an elastic body

Methodology Applied
Scientific EffectSpring force: Spring

Implementation Method 2

the elastic centering arrangement provides spring force to maintain the device in a nominal position

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 3

a screw member for screwing the components, for example a screw or threaded bolt, is passed through correspondingly provided openings in the components and through the device. When screwing the screw member, the compensating member is twisted relative to the base member by means of a driving spring connected between the screw member and the compensating member

Methodology Applied
Scientific EffectSpring force: Spring

Data Source

PatentUS11592044B2Device for compensating of tolerances between a first component and a second component
Publication Date: 2023.02.28 WITTE AUTOMOTIVE GMBH
  • US11592044B2 patent drawing
  • US11592044B2 patent drawing
  • US11592044B2 patent drawing

AI summary

A device for compensating of tolerances between a first component and a second component is described. The device may have an elastic centering arrangement which is provided for centering the device in a nominal position on the first component, which may be formed for this purpose.