Heating Cooker Turntable Radial Locking to Prevent Slide-Off
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Solution Overview
Problem
Conventional heating cookers face issues with turntable stability and safety, as the turntable can slide off during food removal, posing a risk of falling and failing to meet safety standards like IEC Standard 60335-2-25, due to the connection of the rotation shaft to the turntable.
Innovation Solution
A heating cooker design featuring a turntable with radial movement restricting portions on its bottom surface, preventing rollers from moving inwardly or outwardly, ensuring the turntable remains securely positioned within the heating chamber, using annular ridge portions to lock rollers in place when a force is applied.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the turntable is merely placed on a plurality of rollers to enable smooth attachment and detachment, then the ease of operation is improved, but the stability deteriorates and the turntable may slide off the heating chamber
Solution Approach 1:
The movement restriction function is segmented into three distinct radial movement restricting portions (first, second, and third) arranged at different positions and heights on the turntable bottom surface. Each portion handles specific movement scenarios, creating a modular safety system that maintains ease of operation while preventing sliding off.
Solution Approach 2:
The radial movement restricting portions are pre-configured on the turntable bottom surface before operation. The first restricting portion is positioned to lock rollers during normal operation, the second is positioned to catch rollers during outward movement, and the third restricts excessive outward movement, creating preliminary safety barriers against sliding off.
2Stability of the object's composition
If the rotation shaft is connected to the turntable to provide stable rotation, then the stability is improved, but the ease of operation deteriorates and attachment and detachment cannot be performed smoothly
Solution Approach 1:
The rotation shaft connection is extracted from the turntable structure. Instead of connecting the rotation shaft to the turntable, the patent uses the radial movement restricting portions to maintain rotational stability while allowing the turntable to be freely attached and detached from the rollers.
Solution Approach 2:
The radial movement restricting portions act as intermediaries between the turntable and rollers. They provide the necessary stability and control for rotation while allowing smooth attachment and detachment operations, mediating between the need for stability and ease of operation.
Data Source
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AI summary
A heating cooker has a heating chamber (2), a plurality of rollers (202) arranged at intervals in a circumferential direction on a bottom surface of the heating chamber (2), a connecting member (201) configured to connect the plurality of rollers (202), and a turntable (100) placed on the bottom surface of the heating chamber (2) with the plurality of rollers (202) interposed therebetween. The turntable (100) includes a first radial movement restricting portion (101) provided on the bottom surface of the turntable (100) and on an inner circumferential side of a track on which the plurality of rollers (202) roll in a circumferential direction, the first radial movement restricting portion (101) configured to restrict radially inward movement of the plurality of rollers (202).