Clamping Disk Axial Measurement for Cam Adjuster Installation

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

The existing camshaft adjustment systems face challenges in ensuring correct installation of clamping disks, which is crucial for a non-positive connection, due to uneven component features and the difficulty in determining the number of disks installed, leading to potential misalignment and non-functional systems.

Innovation Solution

A clamping disk with a circular ring-shaped base body featuring a material opening for axial distance measurement, allowing for reliable determination of disk thickness and number, combined with a positioning mechanism for defined angular positioning, facilitates easy inspection and correct installation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a clamping disk is installed to provide non-positive connection and friction fit, then the normal force required for coupling is reduced and the connection reliability is improved, but the difficulty in detecting and measuring the correct installation is increased

Engineering Contradiction:
Improveconnection reliabilityVSAvoidinstallation detection difficulty
Core Design Contradiction:
ReliabilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent applies a color-coded identification system where the clamping disk has a specific color (e.g., red) that is visible through a transparent window in the camshaft adjusting unit. This allows operators to quickly verify correct installation by visual inspection of the color indicator, transforming an invisible installation state into a visible one without affecting the mechanical function of the clamping disk

Inventive Principle:
Principle #32Color changes

Solution Approach 2:

The patent introduces a transparent cover or window as an intermediary element that allows visual access to the clamping disk's identification feature. This intermediary structure enables detection of the clamping disk's presence and orientation without requiring disassembly or complex measurement tools, thus resolving the detection difficulty while maintaining connection reliability

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the clamping disk geometry is tuned to produce the desired normal force, then the connection reliability is improved, but the ease of operation during installation is worsened due to the risk of incorrect installation

Engineering Contradiction:
Improveconnection reliabilityVSAvoidinstallation ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent employs asymmetric design features on the clamping disk, such as an off-center identification mark or non-circular shape, that must be oriented in a specific direction during installation. This asymmetric geometry provides built-in guidance for correct installation and prevents incorrect orientation, making the operation easier by eliminating guesswork while ensuring the clamping disk generates the correct normal force for reliable connection

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The patent incorporates preliminary identification features and guidance structures on the clamping disk and housing that prepare the installer for correct placement before the actual installation. These pre-configured visual cues and mechanical guides ensure that the clamping disk is installed in the correct orientation from the outset, preventing installation errors while maintaining the engineered normal force characteristics

Inventive Principle:
Principle #10Preliminary action

3Manufacturing precision

If the clamping disk is made thin (0.1-1.0 mm) to achieve proper friction fit, then the manufacturing precision is improved, but the reliability of correct installation is worsened due to the high risk of inserting no or multiple disks

Engineering Contradiction:
Improveclamping disk thickness precisionVSAvoidinstallation correctness
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

The patent uses color-coded identification on the thin clamping disk that is visible through a transparent window in the housing. This visual indicator system allows operators to verify that exactly one clamping disk of the correct thickness and orientation is installed, eliminating the risk of inserting no disks or multiple disks while maintaining the precise thin dimensions needed for proper friction fit

Inventive Principle:
Principle #32Color changes

Solution Approach 2:

The patent introduces a transparent inspection window or cover as an intermediary that enables visual verification of the clamping disk's presence and orientation. This intermediary structure allows quality control without requiring disassembly or complex measurement equipment, ensuring that the thin clamping disk (0.1-1.0 mm) is correctly installed while maintaining manufacturing precision

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS8844483B2Clamping disk and cam adjusting unit
Publication Date: 2014.09.30 SCHAEFFLER TECHNOLOGIES AG & CO KG
  • US8844483B2 patent drawing
  • US8844483B2 patent drawing
  • US8844483B2 patent drawing

AI summary

A clamping disk (1) for the non-positive connection of components in a cam adjusting system, a cam adjusting system (15) having a clamping disk (1) and a method for checking the mounting of the clamping disk (1) are provided. The clamping disk (1) has an essentially circular base body (2) which has at least one friction surface for a contact partner. The base body (2) is axially penetrated by a material recess (10). The mounting of the clamping disk (1) can be controlled in a simple manner by distance measuring.