Wiring harness routing & packaging Rules Week 3 Challenge

Topic - Define the P Clamp, Backshell and create corrogated tubes and add in catlogue in Catia V5

Objective - To download the P clamp and back shell 3D data from the open source

To create electrical Cot tubes in electrical part design workbench

To define the parts electrical in electrical part design

To add the parts in respective catlogues

Introduction

Wiring harness is one the most essential parts of the vehicle industry. A wiring harness is an organized set of wires, terminals and connectors that run throughout the entire vehicle and transmit information and electric power, thereby playing a critical role in “connecting” a variety of components. Power and information travel through this network much like the circulatory and central nervous systems of the human body. It conducts electricity for all electrical loads on a vehicle.

Selection of components

Selection of connectors, fuses, lights, switches, sensors, wires, cables, relays, protection tubes, motors etc. are the core components of the wiring harness. The performance of these components directly determines the overall performance of the wiring harness and plays a decisive role in the stability and safety of the whole vehicle. The basis of the selection of these components is the voltage system and its current carrying capacity. Ambient temperature in the selection of these components is one of the most important aspects of wiring harness design. Proper selection of these electrical components and their conductors ensures reliability and safety. For example, for the requirements of high performance airbags like ABS and ECU with a terminal connector, gold-plated pieces are preferred to ensure safety and reliability.

Wiring Diagram

Wiring diagrams are also known as schematics or circuit diagrams. The selected components are placed and connected to each other in the diagram. These components belong to a set of libraries which can be modified and configured according to customer specific requirements. A wiring diagram shows each connection in detail. The schematics give an overview of the components that are part of the electrical design. Other items in the schematics are for example cables, sheet cross references and ECUs.

If an assembly is going to be used for communications or data signal transmission, twisted pairs should be considered to eliminate the risk of noise or EMI (electromagnetic interference) impacting on the performance of the assembly.

P Clamp

P-clamps lock cables and hoses in place and help ensure that machinery, vehicles and equipment keep running. They bracket wires, cables or hoses together mechanically and are fastened securely to an anchor point – usually with a screw or a bolt.

Backshells

Connector backshells are essential accessories that are threaded onto the rear of a circular or rectangular connector shell to provide additional support and protection and create a more polished aesthetic look. Backshells intermate with a connector's rear end (wire end) geometry, and specifying one can be difficult due to the wide range of connector rear end design types, nut/bolt appearances and assembly procedures. When selecting a connector backshell, you'll want to keep in mind: the angle/profile you require (straight, 90° or 45°), the coupling style you need (such as spin, self-lock or direct), the type of connector you're using and the overall requirements of your application.

Corrogated Tubes

Corrugated Flexible Tubes also known as Cot Tubes / Convoluted Conduits have a wide range of application for harnessing cables in: • Automobiles: HCVs / LCVs / Four Wheelers / Two Wheelers. • Electrical Control Panels. • Home Appliances: Washing Machines / Fridges. • Railway Coaches

Q1. Download following cad data & define it as Electrical support using Electrical Part design Workbench. Define all the necessary properties.

P Clamp

Download the given data of the P clamp in igs format and open in Catia V5

Go to part workbench and use points and planes on the entry/exit and base

Go to electrical part design workbench and define the electrical support

Q2. Download following Back shell cad data & define it as Electrical back shell using Electrical Part design Workbench. Define all the necessary properties.

Tyco 1738312-1

Download the given data of the backshell in igs format and open in Catia V5

Go to part workbench and use points and axis on the backshhell connection point and bundle connection point

Go to electrical part design workbench and define the backshell

Define the backshell connection point and bundle connection point

Q3. Create Following Corrugated tubes & Add them in Catalogue under “Slit COT” family.

Name	ID (mm)	OD (mm)	Thickness (mm)
15mm COT	12	15	1.5
20mm COT	17	20	1.5
35mm COT	32	35	1.5
10mm COT	7	10	1.5
5mm COT	3	5	1

Go to electrical part design workbench and define protection part

Fill the window with inner diameter, thickness and bend radius

save the part

Go to stare device and add the part in the catalogue

Conclusion

We have succesfully downloaded and defined the backshell and p clamp electrically and created cot tubes of various sizes and added them to the catalogue.