Hydraulic Clutch Cancellation Plate Assembly Mechanism
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Solution Overview
Problem
In hydraulic clutch devices, the clip used to lock the canceller plate is prone to deformation under centrifugal force, making assembly difficult due to high binding forces, which complicates the workability of the assembly process.
Innovation Solution
A hydraulic clutch device configuration where a projection portion on the canceller plate engages with a notch portion on the clutch piston guide, and a locking tool with an engagement hook is used, allowing the locking tool to be supported by an inner peripheral groove, reducing the binding force and enabling easier assembly. The locking tool can be a linear spring, and the design allows operating oil to pass through, eliminating the need for additional oil paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clip is used to lock the canceller plate with increased binding force to prevent deformation under centrifugal force, then the reliability of the locking mechanism is improved, but the ease of assembly deteriorates due to difficulty in assembling against large binding force
Solution Approach 1:
A locking tool is introduced as an intermediary device to facilitate the assembly of the clip. The locking tool engages with the inner peripheral groove of the projection portion and regulates axial movement of the canceller plate, allowing the clip to be assembled without directly opposing the large binding force with human hands. This mediator enables easy assembly while maintaining the necessary locking reliability.
Solution Approach 2:
The locking mechanism transitions from a simple radial clip design to a three-dimensional structure involving axial movement regulation. The locking tool operates in the axial dimension by engaging with the inner peripheral groove and regulating axial movement of the canceller plate, adding a new dimensional approach to solving the locking problem without increasing radial binding force.
2Ease of operation
If the base circle of the projection portion is set larger than the outer diameter of the engagement portion to allow oil flow, then the ease of operation is improved by eliminating additional oil paths, but the device complexity increases due to the larger projection portion
Solution Approach 1:
The projection portion is designed to serve multiple functions simultaneously: it provides the locking engagement surface for the locking tool, maintains structural integrity, and creates a flow passage for operating oil. By making the base circle larger than the outer diameter of the engagement portion, the structure between the base circle and engagement portion naturally forms an oil passage, eliminating the need for separate oil path components and simplifying the overall structure.
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 solution reduces the binding force required for assembly, improves workability, and simplifies the structure by allowing operating oil to flow through the system without additional oil paths, enhancing the efficiency and ease of assembly while maintaining the integrity of the clutch mechanism.
Implementation Method 1
the locking tool is not removed by the centrifugal force when the clutch piston guide is rotated
Implementation Method 2
the projection portion and the notch portion being engaged with each other and assembled
Implementation Method 3
a locking tool that is disposed and engaged in an inner peripheral groove of the projection portion and regulates axial movement of the canceller plate
Data Source
AI summary
In a first hydraulic clutch device 36 provided with a first clutch inner 84, a pressure bearing plate portion 84D disposed on the first clutch inner 84 opposing driving and driven friction plates 85 and 86, a clutch piston 91 that is consecutively disposed to a pressurizing plate portion 91D and moves to the side to pressurize the driving and driven friction plates 85 and 86 in accordance with an increase in a hydraulic pressure in a control hydraulic chamber 96, a piston guide 92 that forms a control hydraulic chamber 96 between itself and the clutch piston 91, and a canceller plate 93 that forms a hydraulic canceller chamber 97 on the side opposite to the control hydraulic pressure chamber 96, a projection portion 133 of the canceller plate 93 and a notch portion 122 disposed in the piston guide 92 and engaged with the projection portion 133 are engaged with each other and assembled, and a clip 135 that is engaged with an engagement groove 123 of the notch portion 122 and regulates axial movement of the canceller plate 93 is disposed.