Multi-stage transmission with torque-dependent shifting
The transmission system addresses gear shifting inefficiencies by adapting to torque and load, reducing power losses and achieving efficient operation in electric vehicles with a compact, mechanically autonomous design.
Patent Information
- Application Number
- DE202025001433
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-05-28
- Publication Date
- 2025-08-07
- Estimated Expiration
- 2035-05-31
AI Technical Summary
Existing transmissions in vehicles shift gears at a fixed speed, leading to power losses due to friction and lack of adaptability to torque and load variations, particularly in electric vehicles which typically lack shift transmissions.
A transmission system that shifts gears based on torque and load, operating in a favorable power range by switching to faster gears during strong acceleration, with a compact design and mechanical autonomy without actuators or sensors.
Reduces power losses by optimizing gear shifts based on torque and load, ensuring efficient operation in electric vehicles with a compact, mechanically autonomous design.
Abstract
Description
Transmissions and clutches are known which shift under centrifugal control or switch between gears. However, this shifting process always takes place at the same speed. In addition, losses of power arise due to friction.The present invention switches depending on the torque and hence the load, therefore the driving motor can be operated in the more favorable power range. For example, the transmission only switches to the faster gear at a higher speed when there is a strong acceleration. This is important in electric vehicles since they usually have no shift transmission.The transmission functions autonomously and purely mechanically, i.e. without actuator, sensor or external actuation.Since all elements are arranged on a shaft, the invention also has a compact design. The machine elements are protected by friction clutches.
Claims
Multi-stage transmission characterized in that a claw is moved axially on an axle via threads depending on the torque and drives wheels in a force-locking manner.Transmission according to claim 1 characterised in that an axially movable claw is located on an axle between rotatable wheels.A transmission according to any one of the preceding claims, characterised in that the movable jaw is connected to the axle via a thread.A transmission according to any one of the preceding claims, characterised in that the claw moves axially via the thread.A transmission according to any preceding claim, characterised in that a change in torque can cause axial movement of the pawl.Transmission according to Claim 1, characterized in that the claw forms a friction clutch with the wheels.A transmission according to claim 1 characterised in that the axial position of the pawl is assisted or controlled by springs.A transmission according to claim 1 characterised in that the axial position of the pawl is assisted by magnets.A transmission according to claim 1 characterised in that the axial position of the pawl is assisted by locking.Transmission according to claim 1 characterised in that the wheels are rotatably mounted on the axle.