Split Drive Train With Evoloid Toothing for Compact Force Transmission
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Solution Overview
Problem
Existing drive units for adjustable elements in vehicles and devices are often bulky and inefficient, particularly when space is limited, and there is a need for compact and high-efficiency solutions.
Innovation Solution
A compact drive unit with a split drive train and evoloid toothing, which halves the power flow through two separate drive paths, allowing for smaller and lighter drive elements, reduced play, and improved force transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a conventional unsplit drive train is used, then the drive unit can transmit sufficient force, but the drive unit becomes bulky and occupies excessive space
Solution Approach 1:
The drive train is divided into a first drive path and a second drive path that split from a common input and rejoin at the output. This segmentation allows the power flow to be distributed across two separate paths, enabling the use of smaller drive elements in each path while maintaining overall force transmission capability. The split architecture reduces the volume required for each individual drive element and the drive unit as a whole.
2Volume of moving object
If smaller drive elements are used to reduce space, then the drive unit becomes more compact, but play increases and reliability decreases
Solution Approach 1:
By splitting the drive train into two parallel paths, the load on each individual drive element is reduced, allowing the use of smaller elements without excessive play. The redundant path structure provides mutual support and reduces cumulative play effects compared to a single overloaded path.
Solution Approach 2:
The first and second drive paths are merged at the output to combine their force transmission capabilities. This merging allows the smaller drive elements in each path to work together to achieve the required total force transmission, maintaining reliability while keeping individual elements compact.
3Productivity
If a split drive train with evoloid toothing is implemented, then force transmission efficiency improves and space is reduced, but device complexity increases
Solution Approach 1:
The drive train is segmented into two distinct drive paths with separate drive elements, allowing optimized force distribution. This segmentation improves force transmission efficiency by reducing crowding and interference between components while maintaining a structured, manageable complexity through the systematic split architecture.
Solution Approach 2:
The evoloid toothing introduces a sophisticated gear geometry that operates in a different dimensional configuration compared to conventional toothing. This dimensional change in the gear engagement allows for improved force transmission characteristics and compact packaging, as the evoloid profile enables more efficient contact patterns and load distribution across the gear surfaces.
Data Source
AI summary
Drive unit for adjusting an adjustable element between at least a first position and a second position, comprising a drive train having an input shaft and an output shaft, wherein the drive train is split into at least a first drive path and a second drive path, wherein at least one drive element in the drive train comprises an evoloid toothing.