Clutch Center Tooth Oil Channels for Plate Lubrication Flow

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Solution Overview

Problem

Conventional clutch devices face inefficiencies in distributing clutch oil from the clutch center to the input-side and output-side rotating plates, leading to suboptimal performance in transferring rotation driving force.

Innovation Solution

The clutch device incorporates oil channels in the center-side fitting teeth of the clutch center, allowing clutch oil to flow from the inner to the outer peripheral surface, and recesses in the fitting teeth to facilitate efficient oil distribution between the clutch center and pressure plate, ensuring adequate supply to the rotating plates.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If clutch oil is distributed in the clutch center without oil channels, then the structure is simpler, but clutch oil cannot efficiently flow from the inside to the outside of the clutch center to supply the rotating plates

Engineering Contradiction:
Improveclutch oil flow efficiencyVSAvoidclutch center structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The clutch center is segmented by incorporating multiple oil channels within the center-side fitting teeth, dividing the oil distribution function into discrete pathways that guide clutch oil from the inner peripheral surface to the outer peripheral surface, thereby improving flow efficiency without significantly complicating the overall structure

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The oil channels act as intermediary structures that facilitate the transfer of clutch oil from the clutch center interior to the exterior, enabling efficient oil supply to the rotating plates while maintaining a relatively simple clutch center design

Inventive Principle:
Principle #24Intermediary (Mediator)

2Quantity of substance

If clutch oil flow to the outside of the clutch center is insufficient, then the structure requires fewer flow pathways, but the input-side and output-side rotating plates do not receive adequate clutch oil supply

Engineering Contradiction:
Improveclutch oil supply quantityVSAvoidoil channel configuration
Core Design Contradiction:
Quantity of substanceVSDevice complexity

Solution Approach 1:

The center-side fitting teeth are designed with localized oil channels at specific positions to optimize clutch oil distribution to the rotating plates, ensuring adequate supply quantity while minimizing unnecessary structural complexity

Inventive Principle:
Principle #3Local quality

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 design enhances the efficient flow and distribution of clutch oil, improving the transfer of rotation driving force and reducing friction and heat absorption, thereby enhancing the clutch's operational efficiency and durability.

Implementation Method 1

an oil channel located in an end portion of at least one of the center-side fitting teeth in the second direction... and the oil channel allows clutch oil flowing at least at an inner peripheral surface of the outer peripheral wall to be discharged to outside of the clutch center

Methodology Applied
Scientific EffectFluid flow through channel:

Implementation Method 2

a recess that is recessed in a first direction from an end surface of at least one of the center-side fitting teeth in a second direction... and the recess is open toward an inner peripheral surface and an outer peripheral surface of the outer peripheral wall

Methodology Applied
Scientific EffectFluid distribution through recess:

Data Source

PatentUS11946513B1Clutch device and motorcycle
Publication Date: 2024.04.02 FCC KK
  • US11946513B1 patent drawing
  • US11946513B1 patent drawing
  • US11946513B1 patent drawing

AI summary

A clutch device includes a clutch center, and a pressure plate movable toward or away from the clutch center, rotatable relative to the clutch center, and operable to press input-side rotating plates and output-side rotating plates. The clutch center includes center-side fitting teeth holding the input-side rotating plates and the output-side rotating plates, projecting radially outward from an outer peripheral surface of an outer peripheral wall, and arranged in circumferential directions, and an oil channel in an end portion of at least one of the center-side fitting teeth in a second direction. The oil channel allows clutch oil flowing at least at an inner peripheral surface of the outer peripheral wall to be discharged to outside of the clutch center.