Vehicle Chassis Angle Measurement Sensor Mounting

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Solution Overview

Problem

Existing angle measurement devices on vehicle chassis require additional holding means and are vulnerable to environmental damage, limiting their effectiveness and reliability in detecting angular movements between pivotable components.

Innovation Solution

The sensor is arranged directly on the control arm at the pivot axis, with the signal emitter positioned on the pivot bearing, eliminating the need for additional holding means and protecting both components from damage, allowing for precise detection of angular positions through a magnetic field connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the sensor is arranged externally on the control arm with additional holding means, then the angle measurement device can be assembled, but the device complexity increases and the sensor is vulnerable to environmental damage

Engineering Contradiction:
Improvesensor protectionVSAvoidholding means
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The sensor is integrated directly into the control arm structure, merging the sensor mounting function with the control arm itself. This eliminates separate holding means while ensuring the sensor is protected within the control arm's structural envelope, resolving the contradiction between reliability and device complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The control arm serves multiple functions: it provides structural support for the suspension system and simultaneously serves as the mounting structure for the sensor. This multi-functionality eliminates the need for dedicated holding means while maintaining sensor protection, addressing both reliability and complexity concerns.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Measurement precision

If the sensor is arranged closer to the signal emitter, then the magnetic field connection is stronger, but the sensor may be more exposed to environmental influences

Engineering Contradiction:
Improveangular position detectionVSAvoidenvironmental damage
Core Design Contradiction:
Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The sensor is integrated into the control arm structure at the pivot axis, placing it close to the signal emitter on the pivot bearing while simultaneously providing structural protection. The control arm's structure serves as both the mounting platform and protective enclosure, resolving the contradiction between measurement precision and environmental protection.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of manufacture

If additional holding means are used to attach the sensor, then the sensor can be securely mounted, but the manufacturing complexity and assembly steps increase

Engineering Contradiction:
Improvesensor attachmentVSAvoidholding means and assembly
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The sensor mounting function is merged with the control arm structure itself. The control arm is designed with an integrated sensor mounting arrangement that incorporates the sensor directly into its structure, eliminating the need for separate holding means and reducing both manufacturing and assembly complexity.

Inventive Principle:
Principle #5Merging (Combining)

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

This arrangement enhances the reliability and durability of angle measurement by ensuring the sensor is protected and reduces the distance between the sensor and signal emitter, maintaining a strong magnetic field connection without interference, enabling accurate detection of angular movements.

Implementation Method 1

The angle measurement device has two components, a sensor and a signal emitter, these preferably being in the form of a magnetic sensor and a magnet

Methodology Applied
Scientific EffectMagnetic field: Magnetic Field

Data Source

PatentUS11498380B2Arrangement of an angle measurement device
Publication Date: 2022.11.15 ZF FRIEDRICHSHAFEN AG
  • US11498380B2 patent drawing
  • US11498380B2 patent drawing
  • US11498380B2 patent drawing

AI summary

An arrangement of an angle measurement device on the chassis of a vehicle. The chassis includes a control arm (1) and a pivot bearing (2) with a pivot axis. The control arm (1) pivots about the pivot axis and the angle measurement device has a sensor (3) and a signal emitter. The sensor (3) is arranged on the control arm (1), in the area of the pivot axis, and the signal emitter is arranged on the pivot bearing (2).