Meshing Clutch Releasing Guide for Low-Noise Transmission Shifts
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Solution Overview
Problem
Existing meshing clutch systems experience significant shift shock and noise during the release of meshing teeth due to increased internal circulation torque, leading to premature disengagement and noise generation.
Innovation Solution
A meshing clutch system with inclined releasing-guide parts on the meshing teeth, a moving mechanism for axial force generation, and an urging mechanism to manage torque transmission, reducing the meshing force and minimizing shift shock and noise by guiding the tooth tops into contact and releasing positions effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If guide faces are formed on meshing teeth in the rotational direction side, then meshing release is ensured, but internal circulation torque is considerably increased
Solution Approach 1:
The patent applies local quality by providing the releasing-guide part only at the tooth top portion of the meshing teeth, rather than forming guide faces across the entire rotational direction side. This localized approach at the critical disengagement point ensures reliable meshing release while minimizing the generation of internal circulation torque during the meshing process.
2Strength
If internal circulation torque is increased, then meshing force is strengthened, but shift shock and noise are greatly remained
Solution Approach 1:
The patent converts the potentially harmful internal circulation torque into a beneficial controlled release mechanism. By providing the releasing-guide part at the tooth top, the internal circulation torque that would normally cause shock and noise is instead channeled to guide the meshing teeth along a controlled path during release, reducing the harmful effects while maintaining sufficient meshing force.
Solution Approach 2:
The patent introduces a new dimensional aspect by adding the releasing-guide part at the tooth top, which provides a vertical guidance component in addition to the horizontal meshing force. This dimensional addition allows the meshing teeth to disengage in a controlled manner, converting the harmful internal circulation torque into a beneficial guiding action that reduces shift shock and noise.
3Power
If meshing teeth are pressed to each other, then torque transmission is enhanced, but instantaneous disengagement causes shock and noise
Solution Approach 1:
The patent applies preliminary action by providing the releasing-guide part at the tooth top that prepares the meshing teeth for controlled disengagement before the actual separation occurs. This guide part ensures that when the meshing teeth are pressed together for torque transmission, they are pre-configured to disengage in a controlled manner, preventing instantaneous separation and the associated shock and noise.
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 effectively reduces shift shock and noise by minimizing the meshing force during clutch release, enhancing smooth torque transmission and reducing internal circulation torque, thus improving the shifting process.
Implementation Method 1
the urging functional part is a coil spring, the contact body is brought into contact with the urging and converting part by the elastic force of the coil spring
Data Source
AI summary
A transmission comprises a moving mechanism to generate axial force to move the one rotary member and releases the axial force according to generation of coasting torque, an urging mechanism to urge the one rotary member with force being poorer than the axial force being generated by the moving mechanism so that the meshing teeth mesh, the contact body of the urging mechanism arranged in a supporting hole formed on the torque transmission member in a radial direction, and an urging and converting part provided to receive the contact body being urged in the radial direction by the urging functional part and convert a direction of the urging to the axial direction to urge the axial movement of the one rotary member.