Split Calibration Knob Assembly for Precise Orientation Setting

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing control knobs for adjustable devices require custom manufacturing and specific tooling, leading to increased costs and variability in appearance, and often lack a standardized method for calibration that allows for easy orientation and adjustment.

Innovation Solution

A split calibration knob system comprising a lower knob with a biasing feature and an upper knob that can be securely attached to the lower knob via press-fit and positioning features, allowing for linked rotation and independent orientation, enabling calibration without custom printing or tooling and standardizing the device's appearance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If custom manufacturing and specific tooling are used for control knobs, then the device can be calibrated, but manufacturing costs increase and variability in appearance occurs

Engineering Contradiction:

Improvecalibration precisionVSAvoidmanufacturing cost

Core Design Contradiction:

Measurement precisionVSEase of manufacture

Solution Approach 1:

The patent applies universality by designing a control knob with a standardized attachment interface that can be used across multiple adjustable devices. The attachment interface includes standardized features such as a tube with press-fit features and positioning features that engage with corresponding features on a hub, allowing the same knob design to be universally applied to different devices without custom tooling, thereby reducing manufacturing costs while maintaining calibration precision

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The control knob is segmented into two separate components: a lower knob portion with an attachment interface and an upper knob portion with corresponding engagement features. This segmentation allows the components to be manufactured separately using standard processes and then assembled through the attachment interface, eliminating the need for custom tooling while preserving calibration functionality

Inventive Principle:

Principle #1Segmentation

2Measurement precision

If custom manufacturing is used for control knobs, then calibration can be achieved, but variability in appearance increases

Engineering Contradiction:

Improvecalibration accuracyVSAvoidappearance consistency

Core Design Contradiction:

Measurement precisionVSStability of the object's composition

Solution Approach 1:

By designing a universal attachment interface with standardized features (tube with press-fit and positioning features engaging with hub features), the patent enables the same knob design to be consistently manufactured and applied across multiple devices, ensuring appearance consistency while maintaining calibration accuracy

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of manufacture

If a standardized attachment interface is used for the split calibration knob, then manufacturing costs are reduced, but the complexity of securing and orienting the upper knob to the lower knob increases

Engineering Contradiction:

Improvemanufacturing costVSAvoidattachment interface complexity

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The attachment interface is segmented into distinct functional features: press-fit features for securing the upper knob to the lower knob, and positioning features for fixing the orientation. This segmentation allows each feature to perform its specific function independently, managing complexity through functional decomposition while enabling standardized manufacturing

Inventive Principle:

Principle #1Segmentation

4Measurement precision

If the upper knob is securely attached to the lower knob with fixed orientation, then calibration is standardized, but the device complexity increases

Engineering Contradiction:

Improvecalibration standardizationVSAvoidknob assembly complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The knob assembly is segmented into an upper knob portion and a lower knob portion with an attachment interface between them. This segmentation allows the two portions to be manufactured separately and assembled with standardized features (press-fit and positioning features), achieving calibration standardization while managing complexity through modular design

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The attachment interface serves multiple functions: it secures the upper knob to the lower knob through press-fit features and fixes the orientation through positioning features. This multi-functionality reduces the need for additional components, achieving calibration standardization without proportionally increasing device complexity

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11157033B2Calibration knob

Publication Date: 2021.10.26 ROCKWELL AUTOMATION SWITZERLAND

AI summary

A split calibration knob can include a lower knob with a lower-knob attachment interface and an upper knob with an upper-knob attachment interface configured to be engaged with the lower-knob attachment interface. One of the lower-knob attachment interface and the upper-knob attachment interface can include a tube with a first press-fit feature and a first positioning feature positioned on the tube. The other of the lower-knob attachment interface and the upper-knob attachment interface can include a hub having an outward facing surface, a second press-fit feature configured to be engaged with the first press-fit feature to secure the upper knob to the lower knob, and a second positioning feature configured to be engaged with the first positioning feature to fix an orientation of the upper knob relative to the lower knob, thereby linking rotation of the lower knob to the rotation of the upper knob.