Holding Device Pin Recess Mechanism Impact Absorption

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing holding devices for rear view mirrors in motor vehicles do not allow for a translatory movement in the longitudinal direction during an impact, which is necessary to absorb and distribute force effectively.

Innovation Solution

A holding device with a base element and a cover part that uses pins and recesses to create a form-fitting connection, allowing for limited displacement when a force exceeds a threshold, ensuring secure attachment while permitting movement in the longitudinal direction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a form-fitting connection is used to securely attach the mirror device to the windshield, then the holding strength is improved, but the ability to permit translatory movement during impact is worsened

Engineering Contradiction:

Improveholding strengthVSAvoidability to permit translatory movement

Core Design Contradiction:

StrengthVSAdaptability or versatility

Solution Approach 1:

The connection system is segmented into multiple recesses (first recess and second recess) that can independently engage with protrusions. This segmentation allows partial movement in one direction while maintaining overall structural integrity and holding strength.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The connection system transitions from a static rigid connection to a dynamic semi-rigid connection. The recesses are designed to allow controlled translatory movement when force is applied, enabling the system to adapt to impact forces while maintaining secure attachment under normal conditions.

Inventive Principle:

Principle #15Dynamics

2Stability of the object's composition

If a rigid connection is used to securely fasten the mirror device, then the stability is improved, but the ability to absorb impact force through movement is worsened

Engineering Contradiction:

ImprovestabilityVSAvoidimpact force

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The recesses are pre-designed to accommodate protrusions in a way that allows controlled movement during impact. This beforehand design creates a cushioning effect that absorbs impact forces while maintaining stable attachment during normal operation.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS11242005B2Holding device for holding a vehicle component on a pane surface of a motor vehicle

Publication Date: 2022.02.08 BAYERISCHE MOTOREN WERKE AG

AI summary

A holding device holds a vehicle component such as an internal rear view mirror on a pane surface of a motor vehicle. The holding device includes a base element having a fastening surface for attachment to the pane surface of the motor vehicle, a cover part for fastening to the base element and for holding a foot element, wherein the cover part is held on the base element by engaging at least one pin in an associated recess in a holding element of the cover part. The holding element has an auxiliary recess which is arranged offset to the recess in a direction of extension such that when force is applied in the direction of extension with an amount of force which is greater than a threshold amount, the cover part shifts on the base part and the at least one pin is at least partially accommodated in the auxiliary recess.