Vehicle Logo Sensor Assembly With Spring Motion Amplification

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Solution Overview

Problem

Existing vehicle tailgate and liftgate designs that incorporate a microbutton or microswitch into the logo require excessive movement for actuation, leading to undesirable logo flexing and inefficiency.

Innovation Solution

A sensor assembly integrated into the vehicle logo or badge, utilizing a spring element with a deformation limiting mechanism that amplifies the movement of a detection portion, allowing minimal actuation force to trigger a latch release mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a microbutton or microswitch is integrated into the vehicle logo, then the actuation function is achieved, but excessive logo movement and flexing occurs

Engineering Contradiction:
Improveactuation functionVSAvoidlogo movement
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

A sensor assembly is introduced as an intermediary component between the logo and the latch release mechanism. The sensor assembly includes a sensor body with a sensor input and a sensor output, where the sensor input receives movement from the logo and the sensor output triggers the latch release. This intermediary converts small logo movements into sufficient actuation signal without requiring excessive logo flexing.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the traditional mechanical microbutton or microswitch with a sensor-based system. Instead of using mechanical contacts that require significant movement, the sensor assembly detects logo movement and converts it into an electrical signal to trigger the latch release mechanism. This substitution reduces the required movement distance and prevents excessive logo flexing.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If a flat button design is used to allow any part of the logo to be pressed, then actuation versatility is improved, but the movement path becomes insufficient for effective operation

Engineering Contradiction:
Improveactuation versatilityVSAvoidmovement path
Core Design Contradiction:
Adaptability or versatilityVSLength of moving object

Solution Approach 1:

The sensor assembly replaces the mechanical flat button design with a sensor-based detection system. The sensor input can detect movements from various locations on the logo surface, providing versatility without requiring a long movement path. The sensor converts even minimal movements into effective actuation signals for the latch release mechanism.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The sensor assembly introduces a new dimension of detection capability by using a sensor that can detect movements in multiple directions and locations on the logo surface. This allows the system to respond to presses from any part of the logo without requiring significant movement distance, effectively converting spatial versatility into functional actuation.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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

Minimizes the required movement of the logo or badge for actuation, preventing excessive flexing and ensuring reliable operation of the latch release mechanism.

Implementation Method 1

A force is applied to the cover portion when the cover portion is pressed by a driver or passenger, which causes deflection of a spring element. The spring element is shaped such that movement of the spring element is a multiple or ratio of the movement of the cover portion.

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentEP4506525B1Sensor assembly having a spring element and ratio of movement
Publication Date: 2026.01.21 SCHAEFFLER TECHNOLOGIES AG & CO KG
  • EP4506525B1 patent drawingFigure 1~2
  • EP4506525B1 patent drawingFigure 3~4
  • EP4506525B1 patent drawingFigure 5~6

AI summary

The present invention relates to a trigger device (10) for triggering an opening mechanism configured to open a flap of a vehicle. The trigger device (10) comprises a housing assembly (10a) including a first housing element (12) being relatively movable between a non-triggering position and a triggering position. The trigger device (10) further comprises a sensor device (10d) configured to detect movement of the first housing element (12). The sensor device (10d) includes a trigger element (14) and a sensing element (32) configured to detect movement of the trigger element (14). The trigger device (10) further comprises at least one deformation limiting element (20a,20b) and at least one deformation portion (18a,18b,18c,18d) configured to be elastically deformed when the first housing element (12) applies force to the trigger element (14). The deformation limiting element (20a,20b) and the deformation portion (18a, 18b) are configured to increase the movement of the detection portion (16) to move the first housing element (12) between the non-triggering position and the triggering position.