Integrated Parking Lock Toothing for Compact Clutch Drivetrains
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Solution Overview
Problem
Conventional parking locks for motor vehicle drive trains require large installation space, are heavy, and costly to produce, necessitating a more compact and lightweight solution.
Innovation Solution
A parking lock design featuring a pivotable locking lever and a locking toothing integrated onto a multiple disk carrier, eliminating the need for a bulky parking lock wheel by utilizing the multiple disk carrier's function to provide a compact and lightweight solution, with the locking toothing formed either as part of the disk carrier or on a toothed rim, allowing for easy assembly and reduced production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional parking lock with a parking lock wheel fixed to a gear shaft is used, then reliable locking functionality is achieved, but the installation space requirement increases and the weight increases
Solution Approach 1:
The patent merges the parking lock wheel with the multiple-disk clutch assembly by integrating the locking toothing directly into the multiple-disk carrier. This eliminates the need for a separate parking lock wheel component and its associated gear shaft mounting, thereby reducing installation space while maintaining the locking function through the engagement of the locking lever with the integrated locking toothing.
Solution Approach 2:
The multiple-disk carrier is designed to serve dual functions: transmitting rotational force from the clutch to the drive train and providing the locking toothing for the parking lock function. This multi-functionality eliminates the need for a dedicated parking lock wheel, reducing overall component count and installation space requirements while preserving reliable locking capability.
2Reliability
If a conventional parking lock with a parking lock wheel fixed to a gear shaft is used, then reliable locking functionality is achieved, but the weight increases
Solution Approach 1:
The patent combines the parking lock wheel function with the multiple-disk clutch assembly, eliminating the need for a separate heavy parking lock wheel component. The locking toothing is integrated into the multiple-disk carrier, which is already part of the clutch assembly, thereby reducing overall weight while maintaining locking functionality through the locking lever engagement.
Solution Approach 2:
The multiple-disk carrier performs both torque transmission and provides the locking toothing structure, eliminating the need for a dedicated parking lock wheel. This multi-functional design reduces the total material required and consequently the weight of the parking lock system while preserving reliable locking capability.
3Reliability
If a conventional parking lock with a separate parking lock wheel is used, then locking functionality is achieved, but the production cost increases
Solution Approach 1:
The patent integrates the locking toothing directly into the multiple-disk carrier as a single component, eliminating the need for separate manufacturing and assembly of a dedicated parking lock wheel. This reduces the number of parts, simplifies the manufacturing process, and lowers production costs while maintaining reliable locking functionality through the locking lever engagement with the integrated toothing.
Solution Approach 2:
The multiple-disk carrier is designed to serve both torque transmission and locking functions, eliminating the need for a separate parking lock wheel component. This reduces the total part count, simplifies assembly operations, and decreases production costs while preserving the essential locking capability through the integrated locking toothing.
Data Source
AI summary
The present invention relates to a parking lock for the drive train of a motor vehicle, comprising a pivotable locking lever and a locking toothing, wherein the locking lever can be pivoted from a release position, in which the locking toothing is rotatable relative to the locking lever, into a locking position, in which the locking lever engages with the locking toothing and thus fixes the locking toothing. The locking toothing is provided on a multiple disk carrier of a multiple disk clutch. In addition, the present invention relates to a drive train having such a parking lock.