Vehicle Handle Heating System with Direct Carrier Attachment

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Solution Overview

Problem

The production of handles with integrated heating devices for vehicles is cost-intensive and not suitable for large-scale production due to the complexity and sensitivity to abuse forces in conventional manufacturing methods.

Innovation Solution

A handle design featuring a hollow-cylindrical inner part with a heating device directly connected to the inner part via a carrier with toothed edges and circumferentially extending webs or grooves, allowing for a simplified manufacturing process and enhanced functionality by eliminating the need for a cladding element during casting and providing improved force absorption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the heating device is temporarily fixed with a raw rubber sheet and cast in a mold, then the heating device can be attached to the inner part, but the production process becomes complex and cost-intensive

Engineering Contradiction:
Improveattachment reliabilityVSAvoidmanufacturing process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The invention extracts and eliminates the raw rubber sheet from the manufacturing process. Instead of using the rubber sheet as a temporary fixing medium that requires subsequent removal and replacement, the heating device is directly attached to the inner part using adhesive or mechanical connection elements, simplifying the entire manufacturing process while maintaining reliable attachment.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The inner part is designed with integrated attachment features such as adhesive layers or mechanical connection elements that serve multiple functions: providing structural support, enabling direct attachment of the heating device, and ensuring reliable connection without requiring additional temporary fixing materials like raw rubber sheets.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of manufacture

If the heating device is directly connected to the inner part without a cladding element, then the manufacturing process is simplified, but the handle becomes sensitive to abuse forces

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidresistance to abuse forces
Core Design Contradiction:
Ease of manufactureVSStrength

Solution Approach 1:

The invention uses composite construction by combining the inner part made of a first material (e.g., metal or rigid plastic) with the cladding element made of a second material (e.g., rubber or thermoplastic elastomer). This composite structure allows the inner part to provide structural strength against abuse forces while the cladding element provides protection and aesthetic finish, achieving both manufacturing simplicity and force resistance.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The cladding element is designed to absorb and cushion abuse forces before they reach the heating device and inner part. By positioning the cladding element as the outer protective layer, it beforehand cushions impacts and mechanical stresses, protecting the more sensitive heating device while allowing direct connection simplification.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Stability of the object's composition

If the heating device covers the entire circumference of the inner part, then symmetrical heating is achieved, but the manufacturing process becomes more difficult due to potential creases

Engineering Contradiction:
Improveheating symmetryVSAvoidheating device flatness
Core Design Contradiction:
Stability of the object's compositionVSManufacturing precision

Solution Approach 1:

The heating device is pre-formed with the appropriate circumferential shape and tension characteristics before attachment. The carrier material and resistance track are prepared in advance with the correct geometry, allowing the heating device to be wrapped around the inner part without creating creases or deformations, thus achieving both full circumferential coverage and manufacturing ease.

Inventive Principle:
Principle #10Preliminary action

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 simplifies the manufacturing process, reduces production costs, and enhances the handle's functionality by ensuring reliable attachment and force absorption, enabling symmetrical heating and preventing relative movement between the heating device and inner part.

Implementation Method 1

a heating device arranged on the outside of the outer peripheral surface of the inner part with a carrier and at least one resistance track

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Data Source

PatentEP1866198B1Handle comprising a heating system
Publication Date: 2012.02.29 BREHMER THOMAS
  • EP1866198B1 patent drawingFigure 1
  • EP1866198B1 patent drawingFigure 2
  • EP1866198B1 patent drawingFigure 3

AI summary

The invention relates to handle comprising a heating device for vehicles such as motor bikes, snowmobiles and the like. The aim of the invention is to provide a handle that can be produced reliably, at low costs and in a reproducible manner. For this purpose, a handle (10) comprises a hollow-cylinder inner part (100), a heating device (200), mounted on the outside towards the outer shell of the inner part (100) and comprising a support (210) and at least one resistance strip (220, 221), and a cladding element (300) which is radially mounted, cast on or injection-molded onto. The heating device (200, 201) is directly connected to the inner part (100). The invention also relates to a method for producing such a handle.