Multi-Plate Clutch Axial Guide Adjustment for Drag-Free Opening
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Solution Overview
Problem
Existing multi-disc friction clutches face challenges in ensuring accurate alignment and adjustment of friction plates due to manufacturing tolerances, leading to complex and costly assembly processes, particularly in dry double clutches where oil lubrication is not used, resulting in drag torque issues.
Innovation Solution
A transmission system with axial guide devices and an adjusting mechanism, utilizing washers, rivets, and flanges to adjust the relative position of transmission devices and friction plates, allowing for precise alignment and force characteristic adjustment post-assembly, enabling reliable torque transmission without direct actuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If leaf spring-based guide devices are used to synchronize intermediate plate movement with pressure plate movement, then the clutch can achieve drag-free opening, but the guide mechanism requires precise matching to clutch geometry and characteristics, increasing assembly complexity
Solution Approach 1:
The patent makes the guide device adjustable after assembly through the use of adjustment elements (such as adjustable stop surfaces or positioning elements) that allow the guide device to be adapted to the specific clutch geometry and characteristics. This dynamic adjustability resolves the contradiction by enabling the guide device to maintain reliable drag-free opening while accommodating variations in clutch design without requiring complex pre-matching during assembly.
2Manufacturing precision
If adjustment devices are added to adapt guide devices to clutch properties, then manufacturing tolerances can be compensated, but the assembly process becomes more complex and expensive
Solution Approach 1:
The patent incorporates adjustment elements directly into the guide device structure that can be configured during assembly to compensate for manufacturing tolerances. The adjustment mechanism is designed to be simple and intuitive, allowing technicians to make necessary adjustments without complex procedures. This preliminary action principle is applied by pre-designing the adjustment capability into the guide device, enabling tolerance compensation while keeping the assembly process manageable.
3Power
If multiple friction plates are used to increase transmissible torque, then torque capacity increases, but the alignment and coordination of multiple plates becomes more difficult
Solution Approach 1:
The patent designs a universal guide device that can accommodate multiple friction plates of different types (intermediate plates and pressure plates) through a standardized adjustment mechanism. The guide device serves multiple functions: guiding axial movement, synchronizing plate coordination, and compensating for tolerances across all friction plates. This multi-functionality resolves the contradiction by enabling high torque capacity through multiple plates while maintaining simple and unified coordination through the adjustable guide device.
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 system simplifies the assembly process by allowing late-stage adjustment of friction clutches, ensuring desired force and torque characteristics, reducing complexity and cost while ensuring proper friction plate alignment and torque transmission.
Implementation Method 1
at least one adjusting device (10) by means of which the relative position between the at least one translation device (8) and/or a friction plate (6, 7) and/or the associated axial guide device (3, 4) can be adjusted
Data Source
Figure 1~3
Figure 4~9
Figure 10~16
AI summary
A transmission system (1) for a multi-plate friction clutch (2) comprises at least the following components: a plurality of axial guiding devices (3, 4), each arranged between two friction plates (5, 6, 7) that move axially relative to one another, wherein at least one first axial guiding device (3) is arranged between an axially fixed counter plate (5) and a first axially movable pressure plate (6), and wherein at least one further axial guiding device (4) is arranged between an axially movable pressure plate (6) or the axially fixed counter plate (5) and a further axially movable pressure plate; at least one transmission device (8) with at least one transmission receiver (9) fastened to a pressure plate (6), wherein a transmission device is assigned to an axial guiding device (3), wherein the assigned axial guiding device is arranged integrated into a multi-plate friction clutch between different friction plates (5, 6). The transmission system is particularly characterized in that, furthermore, it further comprises at least one adjustment device, by means of which the relative position between the at least one transmission device and/or one friction plate and/or the assigned axial guiding device can be adjusted. The proposed adjusting device enables the transmission ratio to be adjusted after installation of the friction elements of a multi-plate friction clutch.