Portable operating element having a ring magnet and a specific magnetic field influencer, as well as an operating device
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Solution Overview
Problem
Existing portable control elements for cooking appliances have limitations in detecting minor and specific actuations, such as tilting and rotational movements, due to their geometric design and magnetic field influence capabilities.
Innovation Solution
A portable control element with a housing containing a ring magnet and a magnetic field influencer, featuring a ring with tabs that overlap radially and axially, allowing for improved direction and detection of magnetic field lines, enabling precise detection of tilting and rotational movements by enhancing the magnetic field influence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a circular disc plate flux concentrator is used, then the magnetic field can be concentrated, but the detection precision of minor tilting and rotational movements is insufficient
Solution Approach 1:
The magnetic field influencer is segmented into multiple discrete tabs extending radially outward from the longitudinal axis. These tabs divide the continuous magnetic field into distinct zones, enabling the detection system to differentiate between various rotational positions and tilting angles by detecting which tabs are positioned over the ring magnet segments.
Solution Approach 2:
Different regions of the magnetic field influencer have different properties - the tabs have different radial positions and extensions, creating localized magnetic field concentrations at specific angular positions. This allows the detection system to identify specific rotational orientations and tilting movements by detecting which local magnetic field zones are activated.
2Adaptability or versatility
If a flat disc-shaped flux concentrator is used, then the structure is simple, but the magnetic field lines can only be influenced in a limited way
Solution Approach 1:
The magnetic field influencer transitions from a two-dimensional flat disc to a three-dimensional structure with tabs extending radially outward from the longitudinal axis. This adds a radial dimension to the magnetic field manipulation, allowing the tabs to intercept and redirect magnetic field lines from multiple angular positions, thereby enhancing the overall magnetic field influence capability.
Solution Approach 2:
The magnetic field influencer is designed to rotate together with the ring magnet, making its orientation dynamic rather than fixed. This dynamic configuration allows the tabs to selectively position themselves over different segments of the ring magnet during rotation, enabling the system to detect multiple discrete rotational positions and various tilting movements.
3Measurement precision
If the ring magnet and magnetic field influencer are closely coupled, then the magnetic field detection is enhanced, but the detection of very specific and minor actuations is still limited
Solution Approach 1:
The ring magnet is divided into multiple segments around the longitudinal axis, and the magnetic field influencer has corresponding tabs that can position over these segments. This segmentation creates discrete detection zones, allowing the system to detect very specific rotational positions and minor tilting movements by identifying which segment-tab combinations are magnetically coupled.
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 design allows for more accurate detection of minor tilting movements and increased resolution of discrete rotational positions, improving the precision of actuation detection and enabling more specific operating condition settings.
Implementation Method 1
The control element has a ring magnet (28) arranged in the housing (17). The control element further has a magnetic field influencer (29) that is separate and distinct from the ring magnet (28).
Implementation Method 2
The portable control element is designed for non-destructive attachment and removal from a control element holder (8) of the control device (7).
Implementation Method 3
The magnetic field influencer (29) has a ring (30) which is arranged above the ring magnet (28). The ring (30) overlaps the ring magnet (28) in the radial direction of the control element (9). The magnetic field influencer (29) further comprises at least one tab (31) which is arranged on an inner edge of the ring (30).
Implementation Method 4
the detection of an actuation of the portable operating element with regard to tilting and/or rotating is possible on the basis of this magnetic field detection
Data Source
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AI summary
The invention relates to a portable operating element (9) for an operating device (7) for a cooking appliance (1), which is designed for non-destructive application and removal to and from an operating element holder (8) of the operating device (7), and can be actuated in the applied state in order to adjust the operating conditions of the cooking appliance (1), wherein the operating element (9) comprises a housing (17) and a ring magnet (18), which is arranged in the housing (17), and the operating element (9) has a magnetic field influencer (29) that is separate from the ring magnet (28), which is arranged in the housing (17), wherein the magnetic field influencer (29) has a ring (30) arranged above the ring magnet (28) and overlapping the ring magnet (28) in the radial direction of the operating element (9), wherein the magnetic field influencer (29) also has at least one lug (31) which is arranged on an inner edge (30a) of the ring (30) and oriented axially downwards, such that it overlaps the ring magnet (28) in the direction of a longitudinal axis (A) of the operating element (9). The invention also relates to an operating device (7).