Hotplate device

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Solution Overview

Problem

Existing hob devices face challenges in achieving stable and secure attachment of fastening units to hob plates, particularly in reducing the influence of manufacturing tolerances and minimizing the risk of damage to the hob plate, while maintaining a low probability of optical defects and optimizing adhesive layer usage.

Innovation Solution

The hob device incorporates a fastening unit with multiple surface areas, where at least one surface area is maintained at a specific distance from the hob plate using an adhesive layer, and a second surface area with a reduced distance, allowing for a smaller contact surface and homogeneous adhesive layer application, along with recesses for adhesive material escape, ensuring secure and stable attachment while minimizing contact and optimizing layer thickness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single continuous surface area is used for fastening, then the fastening unit can be attached to the hob plate, but manufacturing tolerances cause instability and the adhesive layer thickness varies leading to inconsistent attachment quality

Engineering Contradiction:

Improveattachment stabilityVSAvoidadhesive layer thickness uniformity

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The fastening unit is divided into different surface areas with different distances to the hob plate. The first surface area has a first distance for stable adhesive attachment, while the second surface area has a second distance for reduced contact. This local differentiation allows each area to fulfill its specific function optimally, resolving the contradiction between attachment stability and manufacturing precision.

Inventive Principle:

Principle #3Local quality

2Strength

If the entire surface of the fastening unit contacts the hob plate, then maximum attachment area is achieved, but the risk of hob plate damage increases and optical defects occur

Engineering Contradiction:

Improveattachment strengthVSAvoidhob plate damage risk

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The contact surface is segmented into a first surface area for adhesive attachment and a second surface area with reduced distance. This segmentation allows the attachment function to be distributed: the first surface area provides bonding strength through adhesive, while the second surface area minimizes direct contact pressure on the hob plate, reducing damage risk and optical defects.

Inventive Principle:

Principle #1Segmentation

3Reliability

If a larger adhesive layer thickness is used, then sufficient adhesive material is available for stable attachment, but the overall distance and device height increase

Engineering Contradiction:

Improveattachment stabilityVSAvoidfastening unit distance from hob plate

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

Different surface areas have different distances to the hob plate. The first surface area maintains an optimal distance for adhesive layer application and bonding stability, while the second surface area has a reduced distance. This local differentiation allows the device to achieve stable attachment without unnecessarily increasing overall height.

Inventive Principle:

Principle #3Local quality

4Object-affected harmful factors

If the contact surface area is reduced, then the risk of hob plate damage and optical defects decreases, but the attachment stability may be compromised

Engineering Contradiction:

Improveoptical defects probabilityVSAvoidattachment stability

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The surface area is segmented into a first surface area for adhesive attachment and a second surface area with reduced distance. The first surface area provides sufficient bonding area for stable attachment, while the second surface area minimizes direct contact to reduce optical defects and damage risk. This segmentation resolves the contradiction between attachment stability and harm reduction.

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

This configuration enhances the stability and quality of attachment, reduces the influence of manufacturing tolerances, lowers the risk of hob plate damage, and optimizes adhesive material usage, achieving a secure and stable fastening while minimizing optical defects and adhesive layer thickness.

Implementation Method 1

at least one adhesive layer (18), which is arranged between the first surface area (16) and the hob plate (12) in the assembled state, in order to attach the first surface area to the hob plate

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentEP3106758B1Hotplate device

Publication Date: 2019.07.10 BSH HAUSGERATE GMBH

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AI summary

The invention is based on a hob device (10) with at least one hob plate (12) and with at least one fastening unit (14) which is intended for fastening to the hob plate (12) and which has at least one first surface area (16) which for attachment to the hob plate (12) by means of at least one adhesive layer (18) and which has a first spacing (44) from the hob plate (12) in at least one assembled state. In order to provide a generic device with improved properties in terms of advantageous attachment, it is proposed that the attachment unit (14) has at least one second surface area (20) which, in the assembled state, has a second distance from the hob plate that is different from the first distance (44). (12).