Vehicle Holder Damping Device Uniform Extension

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Solution Overview

Problem

Existing vehicle interior receiving devices experience an unpleasant increase in speed towards the end of the extension movement, leading to a sudden and forceful protrusion of the receiving section, which can cause user discomfort, material stress, and reduced service life.

Innovation Solution

A receiving device with a drive unit that applies a first driving force for initial movement and a stronger second driving force for final protrusion, combined with a damping device that counteracts these forces to maintain a uniform extension movement, preventing sudden snapping and material stress.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a stronger second driving force is applied to move the receiving section from the intermediate position to the receiving position, then the receiving section can be reliably extended, but the speed of movement increases significantly causing unpleasant user perception and material stress

Engineering Contradiction:
Improvereceiving section extension reliabilityVSAvoidextension movement speed
Core Design Contradiction:
Ease of operationVSSpeed

Solution Approach 1:

A damping device is introduced as an intermediary element between the drive unit and the receiving section. This damping device mediates the force transmission by applying a damping force that counteracts the driving force, thereby controlling the movement speed and preventing excessive acceleration while still allowing the receiving section to extend reliably to its receiving position.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the total driving force increases to ensure the receiving section reaches the receiving position, then the extension reliability improves, but the service life of the device decreases due to material stress and abrupt stops

Engineering Contradiction:
Improvereceiving position achievementVSAvoiddevice service life
Core Design Contradiction:
ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The damping device provides beforehand cushioning by continuously applying a damping force during the extension movement. This cushioning effect prevents abrupt stops and reduces material stress on the receiving section and base body, thereby extending the device's service life while ensuring the receiving section reliably reaches its receiving position.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Adaptability or versatility

If the receiving section is spring-loaded to increase arrangement height, then the receiving functionality is improved, but the extension movement speed increases causing user discomfort

Engineering Contradiction:
Improvereceiving functionalityVSAvoidextension movement speed
Core Design Contradiction:
Adaptability or versatilityVSSpeed

Solution Approach 1:

The spring-loaded mechanism, which initially causes harmful excessive speed increase, is transformed into a beneficial system by introducing the damping device. The damping device converts the harmful kinetic energy and excessive motion into controlled, uniform movement, thereby maintaining the improved receiving functionality while eliminating the user discomfort caused by rapid extension.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

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 solution ensures a smooth, uniform extension of the receiving section, enhancing user experience, reducing maintenance needs, and prolonging the device's service life by controlling the movement forces and preventing abrupt stops.

Implementation Method 1

a damping device 30 which is designed to apply a damping force (80, 81) to the receiving section (10) counter to the driving force (70, 71)

Methodology Applied
Scientific EffectDamping: Damping

Data Source

PatentEP3484748B1Holder device for a vehicle interior and method for damping a movement of a receiving section of a holder device
Publication Date: 2022.04.20 HS PRODS ENG
  • EP3484748B1 patent drawingFigure 1
  • EP3484748B1 patent drawingFigure 2
  • EP3484748B1 patent drawingFigure 3

AI summary

The invention relates to a holder device (1) for a vehicle interior (90), comprising a receiving section (10) for receiving objects in a receiving position (A) of the receiving section (10), a base body (2), in which the receiving section (10) is located when said receiving section (10) is in a resting position (R), an actuating unit (20) for moving the receiving section (10) out of the resting position (R) through an intermediate position (Z) into the receiving position (A), in which the receiving section (10) projects from the base body (2), wherein the actuating unit (20) applies a first actuating force (70) to the receiving section (10) to move it out of the resting position (R) into the intermediate position (Z) and a second actuating force (71) to move it out of the intermediate position (Z) into the receiving position (A), wherein the first actuating force (70) is smaller than the second actuating force (71). The invention further relates to a method for damping a movement of a receiving section (10) of such a holder device (1) for a vehicle interior (90).