Control Shaft Torsion Spring for Stable Powertrain Shifting
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Solution Overview
Problem
Existing shifting devices for motor vehicle powertrains face challenges in simplifying the force setting between clutch elements and compensating for component tolerances, often requiring complex sensor systems and additional damping or spring elements, which can increase complexity and reduce operational stability.
Innovation Solution
A shifting device with a spring element integrated into the control shaft, allowing torque transmission between sub-sections and enabling a simplified structure by absorbing energy during unsynchronized clutch engagement, thus eliminating the need for complex sensors and additional damping or spring elements, and providing a cushioning effect for improved durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If complex sensor systems and additional damping or spring elements are used to set force between clutch elements and compensate for component tolerances, then force setting precision and tolerance compensation are improved, but device complexity increases
Solution Approach 1:
The spring element is integrated directly into the control shaft, merging the force setting function and tolerance compensation function into the existing control structure. This eliminates the need for separate sensor systems and additional damping elements, achieving precise force control while maintaining simple device architecture.
Solution Approach 2:
The spring element automatically compensates for component tolerances and sets the force between clutch elements through its inherent elastic properties. The system uses the spring's natural characteristics to achieve precise force control without requiring external sensors or complex control mechanisms.
2Reliability
If additional damping or spring elements are added to compensate for play between components, then operational stability is improved, but device complexity increases
Solution Approach 1:
The spring element is combined with the control shaft structure, serving both as a force setting mechanism and a damping element that compensates for play between components. This integration achieves improved operational stability without adding separate damping devices or increasing overall system complexity.
3Duration of action of stationary object
If multiple spring and damping bearing means are used for clutch device components, then durability is improved, but device complexity increases
Solution Approach 1:
The spring element performs multiple functions simultaneously: it sets force between clutch elements, compensates for component tolerances, and provides damping during engagement. This multi-functionality achieves improved durability and service life while eliminating the need for multiple separate spring and damping bearing means.
Solution Approach 2:
The spring element is designed as a universal component that handles force setting, tolerance compensation, and shock absorption. This single multi-functional element replaces what would otherwise require multiple specialized components, simplifying the device while enhancing durability.
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 solution enables reliable and stable shifting into the closed position without additional sensors, absorbs impacts and vibrations, and simplifies the structure, enhancing operational stability and durability by using a torsion spring for torque transmission and energy absorption.
Implementation Method 1
a spring element, via which a torque of the first sub-section can be transmitted to the second sub-section, is provided between the two sub-sections
Implementation Method 2
Due to the integration of the spring element according to this application in the control shaft, further spring and/or damping bearing means for components of the clutch device can be dispensed with
Data Source
AI summary
A shifting device (1) for the powertrain of a motor vehicle, including a control shaft (10) for adjusting a control element (9), the control shaft (10) has a first sub-section (15) which can be driven by an actuator (36) and a second sub-section (16) which is designed to adjust the control element (9). The first sub-section (15) is rotatably mounted relative to the second sub-section (16). A spring element (11), via which a torque of the first sub-section (15) can be transmitted to the second sub-section (16), is provided between the two sub-sections (15, 16).