Sleeve Collar Prevents Bolt Twist on Non-Parallel Frames

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Solution Overview

Problem

Conventional clamping mechanisms for securing pivoting bolts to vehicle frames fail when the side walls do not run parallel, leading to noise issues during pivoting movements due to rotational and displacement misalignment.

Innovation Solution

A system utilizing a sleeve element with a collar region that interacts form-fittingly with a vehicle-frame-side engagement region, such as a protrusion or indentation, to secure the pivoting bolt against rotational and twisting movements, eliminating the need for a clamping mechanism and allowing secure mounting on non-parallel side walls.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional clamping mechanism is used to secure the pivoting bolt, then the pivoting bolt can be secured against rotational movements, but the clamping mechanism cannot be inserted between non-parallel side walls

Engineering Contradiction:

Improvesecuring of pivoting boltVSAvoidapplicability to non-parallel side walls

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

A sleeve element is introduced as an intermediary component between the pivoting bolt and the vehicle frame. The sleeve element includes a collar region that interacts form-fittingly with an engagement region on the vehicle frame, providing a mediating connection that accommodates non-parallel side walls while still securing the pivoting bolt against rotational movements.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The securing system is divided into separate functional components: the pivoting bolt, the sleeve element with collar region, and the engagement region on the vehicle frame. This segmentation allows each component to be optimized independently, with the collar region specifically designed to interact with the engagement region to provide both rotation prevention and adaptability to non-parallel geometries.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If the side walls do not run parallel, then the vehicle frame can accommodate mounting variations, but the conventional clamping mechanism cannot be inserted and noise is produced

Engineering Contradiction:

Improvemounting flexibilityVSAvoidnoise during pivoting

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The sleeve element acts as a mediator that absorbs the geometric mismatch between non-parallel side walls. The collar region's form-fitting interaction with the engagement region provides a stable reference that prevents the pivoting bolt from rotating or displacing, thereby eliminating noise while preserving the ability to mount on non-parallel walls.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

Instead of trying to force the pivoting bolt to fit between non-parallel side walls using a clamping mechanism, the solution inverts the approach by using the collar region and engagement region to define the secure connection, allowing the side walls to remain non-parallel without compromising securing reliability.

Inventive Principle:

Principle #13The other way round (Inversion)

3Reliability

If a clamping mechanism is used, then the pivoting bolt is secured, but the device complexity increases and mounting becomes more difficult

Engineering Contradiction:

Improvesecuring of pivoting boltVSAvoidclamping mechanism structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The complex clamping mechanism is extracted and replaced by a simpler sleeve element with a collar region. The essential function of preventing rotation is maintained through the form-fitting interaction between the collar region and engagement region, while eliminating the need for complex clamping structures, bolts, and adjustment mechanisms.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of using an active clamping mechanism that applies force to secure the pivoting bolt, the solution uses a passive form-fitting geometric connection between the collar region and engagement region. This inverted approach achieves securing through precise geometric matching rather than mechanical clamping forces.

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS11518439B2System for securing a pivoting bolt to a vehicle frame, vehicle frame for connecting a pivoting bolt and method for mounting a pivoting bolt to a vehicle frame

Publication Date: 2022.12.06 SAF HOLLAND GMBH

AI summary

A system for securing a pivoting bolt to a vehicle frame, on which, in a mounted state, a link element, is mounted pivotably, including a sleeve element for receiving the pivoting bolt, wherein a collar region is provided or formed on the sleeve element, wherein the collar region is configured in such a manner that, in a mounted state, the collar region interacts in a form-fitting manner with a vehicle-frame-side engagement region, including a protrusion or an indentation, in order to avoid twisting of the sleeve element.