Pre-Assembled Cable Module for Quieter Vehicle Drive Unit Assembly
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Solution Overview
Problem
The existing drive units for motor vehicle adjusting elements face complexity in electrical contacting due to manual cable connections and a complex three-part circuit board holder design, which complicates assembly and acoustic damping.
Innovation Solution
The drive unit is designed with a pre-assembled cable module that can be easily assembled by an assembly movement, allowing for simultaneous electrical connection and acoustic decoupling between the cable module cover and circuit board holder, simplifying the assembly process and improving acoustic damping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual cable connections are used for electrical contacting, then the drive unit can be assembled, but the assembly process becomes complex and time-consuming
Solution Approach 1:
The cable module is pre-assembled with all electrical connections (cables, connectors, circuit board holder) prepared in advance before being integrated into the drive unit. This preliminary preparation of the cable module allows for simplified final assembly where the pre-assembled unit is simply inserted into the drive housing, eliminating complex manual cable routing and connection steps during final assembly
2Object-affected harmful factors
If a three-part circuit board holder is used for acoustic damping, then vibration transmission is reduced, but the design becomes complex
Solution Approach 1:
The circuit board holder is integrated directly with the cable module cover as a single unified component rather than a separate three-part assembly. This merging maintains acoustic damping functionality through the inherent structural design of the integrated holder, eliminating the complexity of assembling multiple separate parts while still providing vibration isolation between the cable module cover and the drive motor
3Ease of operation
If the cable module cover is connected to the circuit board holder in a fixed manner, then assembly is simplified, but acoustic decoupling is lost
Solution Approach 1:
A damping element is introduced as an intermediary component between the cable module cover and the circuit board holder. This damping element serves as a mediator that maintains the mechanical connection and assembly simplicity while simultaneously providing acoustic decoupling and vibration damping, allowing the cover and holder to remain connected structurally while blocking sound and vibration transmission
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
The pre-assembled cable module simplifies the assembly of the drive unit by enabling a simple assembly movement that decouples the cable module cover from the circuit board holder, achieving both electrical connection and acoustic decoupling, while reducing the force required for assembly.
Implementation Method 1
In order to dampen a transmission of vibrations from the drive motor or the circuit board holder to the cable module cover
Data Source
AI summary
A drive unit for a drive for adjusting an adjusting element of a motor vehicle along a geometric drive axis, wherein the drive unit has a dynamic unit having a drive motor, a cable module having a motor circuit board as well as a drive unit housing for receiving at least the drive motor and the cable module, wherein the cable module for fixing the motor circuit board has a circuit board holder and a cable module cover, into which one or multiple cables for electrical connection to the drive motor and/or the motor circuit board are routed, and a first drive connection which is connected to the cable module cover, and a geometric cable module axis, wherein the dynamic unit is connected to the cable module in an axially fixed manner. It is proposed that the cable module can be designed as a pre-assembled functional unit.