Meshing Clutch Release Guide for Low-Shock Transmission Shifts
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Solution Overview
Problem
Existing meshing clutches in transmissions experience significant shift shock and noise during the release of meshing due to increased internal circulation torque, leading to instantaneous disengagement of meshing faces.
Innovation Solution
A meshing clutch design with inclined releasing-guide parts on meshing teeth that guide the release through relative rotation, reducing meshing force and shock by allowing gradual disengagement through contact with a releasing-guide part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the meshing teeth are designed with conventional guide faces on the rotational direction side, then the meshing can be maintained, but the internal circulation torque is considerably increased during simultaneous meshing
Solution Approach 1:
The releasing-guide part is designed to engage with the meshing tooth in advance before complete meshing occurs. This preliminary engagement creates a controlled release path that prevents the buildup of internal circulation torque during simultaneous meshing operations, allowing smoother gear transitions.
Solution Approach 2:
The releasing-guide part acts as an intermediary element between the meshing teeth. It provides a controlled interface that manages the interaction between engaging gears, redirecting forces to prevent excessive internal circulation torque while maintaining proper meshing engagement.
2Force
If the meshing faces are pressed together due to increased internal circulation torque, then the torque transmission is maintained, but the meshing faces are relatively shifted in the disengaging direction and instantaneously disengage to release the torque
Solution Approach 1:
The releasing-guide part is positioned to engage before complete meshing occurs, creating a preliminary release path. This prevents the sudden buildup and release of internal circulation torque that causes instantaneous disengagement, shift shock, and noise during gear transitions.
Solution Approach 2:
The releasing-guide part converts the potentially harmful internal circulation torque into a beneficial controlled release mechanism. By providing a guided path for the meshing tooth, it transforms the force that would cause shock and noise into a controlled disengagement process.
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 design significantly reduces shift shock and noise by guiding the release of meshing clutches, ensuring smooth transitions between shift stages with minimal force disruption.
Implementation Method 1
friction between a surface of the releasing-guide part and a surface of the meshing tooth
Data Source
Figure 1
Figure 2~3(B)
Figure 4~5
AI summary
Provided are a transmission and a meshing clutch, capable of further reducing shock and noise when a meshing clutch on which torque acts is released. A meshing clutch 51 is provided to connect one shift stage with meshing and be released when changing connection to another shift stage through simultaneously meshing, wherein a tooth top of meshing tooth 51a, 25a on one side or on another side is provided with a releasing-guide part, a moving mechanism is provided to generate axial force to move the one rotary member 63 and releases the axial force according to generation of coasting torque, an urging mechanism 1000 is provided to urge the one rotary member 63 with force being poorer than the axial force being generated by the moving mechanism so that the meshing teeth 51a, 25a mesh, the contact body of the urging mechanism 1000 is arranged in a supporting hole formed on the torque transmission member 57 in a radial direction, and an urging and converting part is provided to receive the contact body being urged in the radial direction by the urging functional part 1000 and convert a direction of the urging to the axial direction to urge the axial movement of the one rotary member 63.