Integrated Transmission Shifting Assembly for Single-Actuation Gear Changes
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Solution Overview
Problem
Existing shifting assemblies for transmissions require complex actuation and high energy consumption to achieve multiple gear ratios, often resulting in inefficient power transmission and increased construction space, especially when implementing reverse gears and energy recuperation in vehicles.
Innovation Solution
A shifting assembly with a friction clutch, a positively locking clutch, and a freewheel clutch unit, where the friction and positively locking clutches are mechanically or hydraulically connected, allowing for single-actuation control and enabling power transmission in both directions, reducing the need for multiple multidisk clutches and preventing unwanted idling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple multidisk clutches are used to achieve multiple gear ratios including reverse gear, then the transmission can provide multiple shifting states, but the actuation complexity and energy consumption increase significantly
Solution Approach 1:
The patent combines a friction clutch and a positively locking clutch into a single integrated shifting assembly that shares common components (coupling parts, actuating means). This merging allows the system to achieve multiple gear ratios including reverse gear while reducing actuation complexity, as both clutches can be controlled by a single actuating mechanism rather than requiring separate actuation systems for each clutch.
Solution Approach 2:
The friction clutch and positively locking clutch are designed to work together in a multi-functional shifting assembly that can provide multiple gear ratios, forward motion, and reverse motion. The connection means enables both clutches to be shiftable by means of a single actuation, making the system more versatile while reducing the number of independent control systems needed.
2Adaptability or versatility
If multiple multidisk clutches are used to achieve multiple gear ratios, then the transmission can provide various shifting positions, but the construction space and manufacturing effort increase
Solution Approach 1:
By merging the friction clutch and positively locking clutch into a compact integrated assembly with shared components and a common actuating means, the patent reduces the overall construction space required compared to using separate multidisk clutches. The connection means enables both clutches to be shiftable by means of a single actuation, consolidating the spatial requirements.
Solution Approach 2:
The shifting assembly employs a nested arrangement where the friction clutch and positively locking clutch are integrated within a compact structure. The connection means connects coupling parts of both clutches in a space-efficient manner, allowing the clutches to be shiftable by means of a single actuation while minimizing the volume occupied by the shifting mechanism.
3Adaptability or versatility
If two multidisk clutches are used for shifting, then multiple gear ratios can be achieved, but the energy consumption for shifting increases considerably
Solution Approach 1:
The patent merges the friction clutch and positively locking clutch into an integrated system where a single actuating means controls both clutches. This consolidation reduces the energy consumption for shifting compared to operating two independent multidisk clutches, as the connection means enables both clutches to be shiftable by means of a single actuation, eliminating redundant energy expenditure.
4Adaptability or versatility
If a positively locking clutch is added for reverse torque direction, then power transmission in both directions is enabled, but the device complexity increases
Solution Approach 1:
The patent integrates the positively locking clutch with the friction clutch in a unified shifting assembly. The connection means connects the coupling parts of both clutches, enabling them to be shiftable by means of a single actuation. This merging approach enables power transmission in both directions (forward and reverse) while minimizing the increase in device complexity through shared components and coordinated actuation.
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
This configuration allows for efficient power transmission with reduced energy consumption and simplified actuation, enabling the implementation of multiple gear ratios and reverse speeds without traction power interruption, while ensuring safe and selective operation of the positively locking clutch for reverse torque direction.
Implementation Method 1
a friction clutch (14) is arranged between the first component (11) and the second component (12)
Implementation Method 2
a positively locking clutch (15) is arranged between the second component (12) and the third component (13)
Implementation Method 3
a freewheel clutch unit (16) is arranged between the second component (12) and the third component (13)
Data Source
AI summary
A shifting assembly for a transmission at least has a first component, a second component, and a third component, the components interacting according to the shift state in that a friction clutch is arranged between the first component and the second component, a positively-locking clutch is arranged between the second component and the third component, and a freewheel unit is arranged between the second component and the third component. A connection means is provided which connects a clutch part of the friction clutch to a clutch part of the positively-locking clutch.