Knob assembly with display device and cooking apparatus having knob assembly

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Solution Overview

Problem

In composite cooking apparatuses, users face difficulty in distinguishing between knobs for adjusting power level and timer time due to similar designs, leading to user convenience issues and the need for separate displays for different information.

Innovation Solution

A knob assembly featuring a knob handle for power level adjustment and a rotatable knob ring with a display for timer time adjustment, where the knob ring can rotate independently and return to its initial position, with encoders to detect rotational amounts and display power level and timer time on a single display.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If separate displays are provided for power level and timer time information, then information display completeness is improved, but device complexity increases

Engineering Contradiction:
Improveinformation display completenessVSAvoiddevice complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent combines the display of power level information and timer time information into a single display device. The display shows different types of information at different times: power level information when the knob handle is rotated, and timer time information when the knob ring is rotated. This merging eliminates the need for separate displays while maintaining complete information display.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The display dynamically changes its displayed information based on which component is being manipulated. When the knob handle is rotated for power level adjustment, the display shows power level information. When the knob ring is rotated for timer time adjustment, the display shows timer time information. This dynamic switching allows one display to serve multiple functions.

Inventive Principle:
Principle #15Dynamics

2Ease of manufacture

If similar knob designs are used for power level and timer time adjustment, then manufacturing cost is reduced, but ease of operation deteriorates

Engineering Contradiction:
Improvemanufacturing costVSAvoiduser convenience
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The patent applies local quality by giving distinct visual characteristics to different parts of the knob assembly. The knob handle and knob ring are provided with different colors or patterns in specific regions, allowing users to easily distinguish which component controls power level and which controls timer time, while still using a unified knob structure.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent uses color differentiation to distinguish between the power level adjustment component and the timer time adjustment component. Different colors or color patterns are applied to the knob handle and knob ring, providing intuitive visual cues to users about the function of each component without requiring completely different designs.

Inventive Principle:
Principle #32Color changes

3Device complexity

If a unified display is used for both power level and timer time, then device complexity is reduced, but ease of operation requires clear differentiation

Engineering Contradiction:
Improvedevice complexityVSAvoidfunction differentiation
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The patent applies local quality by giving distinct visual characteristics to different parts of the knob assembly. The knob handle and knob ring are provided with different colors or patterns in specific regions, allowing users to easily distinguish which component controls power level and which controls timer time, while still using a unified knob structure.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent segments the knob assembly into two distinct functional components: the knob handle for power level adjustment and the knob ring for timer time adjustment. Each segment has its own visual identification features and controls a different function, allowing clear differentiation within a unified display system.

Inventive Principle:
Principle #1Segmentation

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

Enhances user convenience by clearly differentiating power level and timer time functions through distinct color display and reduces the need for separate displays across various cooking apparatuses, allowing for component sharing and improved design unity.

Implementation Method 1

A knob assembly is provided that may include a knob ring configured to be rotatable independent of the knob handle, and provided with a display, wherein a power level set through manipulation of the knob handle and a timer time set through manipulation of the knob ring may be displayed on the display

Methodology Applied
Scientific EffectEncoder detection:

Data Source

PatentUS10890330B2Knob assembly with display device and cooking apparatus having knob assembly
Publication Date: 2021.01.12 LG ELECTRONICS INC
  • US10890330B2 patent drawing
  • US10890330B2 patent drawing
  • US10890330B2 patent drawing

AI summary

A knob assembly with a display that displays information such as power level and a timer time, and a cooking apparatus including a knob assembly are provided. The knob assembly may include a knob coupled to an adjustment shaft configured to adjust power level and a knob ring configured to surround a periphery of the knob, configured to be rotatable independent of the knob, and provided with a display. The display may be provided at the knob ring, and information may be displayed on the display so that a user may easily manipulate the knob assembly.