Ratchet One-Way Clutch Spring Guide Member
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Solution Overview
Problem
The ratchet type one-way clutch experiences unstable spring actuation and attitude, leading to destabilization of the urging force applied to the pawl member, which decreases engagement performance and durability due to spring deformation when sandwiched between the outer race and pawl member.
Innovation Solution
Incorporating a space with a radial width capable of housing the end turn of the spring's edge portion and a guide member at the axial end of the spring pocket to stabilize the spring's urging force, preventing deformation and ensuring a stable urging force is applied to the pawl member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the spring is allowed to move freely to urge the pawl member, then the spring can apply urging force to the pawl member, but the spring may be deformed by being sandwiched between the outer race and the pawl member, destabilizing its attitude and reducing engagement performance
Solution Approach 1:
A guide member is introduced as an intermediary component between the spring and the outer race. This guide member constrains the spring's movement path, preventing the spring from being sandwiched between the outer race and pawl member while still allowing it to apply urging force to the pawl member, thus resolving the contradiction between force application and attitude stability
Solution Approach 2:
The spring's own end turn is utilized to interact with the guide member. The end turn of the spring engages with the guide member to self-constrain its movement, eliminating the need for additional complex constraint mechanisms while maintaining both urging force capability and attitude stability
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 stabilization of the spring's attitude results in improved engagement performance and increased durability of the ratchet type one-way clutch by maintaining a consistent urging force, enhancing the clutch's operational reliability.
Implementation Method 1
a spring for urging the pawl member to the inner race
Data Source
AI summary
A ratchet type one-way clutch is provided that includes an outer race having a pocket on an inner circumference thereof, an inner race arranged on an inner diameter side of the outer race so as to be coaxial therewith, the inner race having a notch on an outer circumference thereof, a pawl member housed in the pocket and engaged with the notch of the inner race to transmit torque between the inner race and the outer race, and a spring for urging the pawl member to the inner race. The ratchet type one-way clutch is provided with urging force stabilizing means for stabilizing an urging force of the spring.