Flywheel Torque Limiter Layout to Cut Transmission Manufacturing Cost
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Solution Overview
Problem
Current power transmission devices are costly due to complex configurations and manufacturing processes, particularly in the interaction between the flywheel, torque limiter unit, and damper unit.
Innovation Solution
A power transmission device configuration that integrates a flywheel with a torque limiter unit and a damper unit, where the torque limiter unit includes side plates and a friction plate, and the damper unit includes an input rotational body and an output plate elastically coupled by an elastic member, allowing for reduced manufacturing steps and costs by eliminating the need for cutting the outer circumferential surface of the output plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the first side plate and the output plate are cut from a single member, then manufacturing complexity is reduced, but the outer circumferential surface of the output plate must be cut, increasing manufacturing cost
Solution Approach 1:
The patent positions the output plate axially between the first side plate and the flywheel, creating spatial separation in the axial dimension. This dimensional arrangement allows the first side plate and output plate to be formed as a single integrated member without requiring costly outer circumferential cutting of the output plate, as the axial positioning prevents interference between components
2Device complexity
If the first side plate and the output plate are integrated, then the number of parts is reduced, but interference between the first side plate and flywheel occurs during rotation
Solution Approach 1:
By utilizing the axial dimension to position the output plate between the first side plate and the flywheel, the patent enables the first side plate and output plate to function as an integrated component while preventing rotational interference. The axial separation ensures that the outer circumferential surfaces do not collide during rotation, maintaining reliability while reducing part count
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 configuration reduces manufacturing costs by simplifying the production process and preventing interference between components, thereby lowering the overall cost of the power transmission device.
Implementation Method 1
The elastic member elastically couples the input rotational body to the output plate
Implementation Method 2
The torque limiter unit is configured to restrict transmission of torque with a predetermined value or more, between the flywheel and the damper unit
Data Source
AI summary
A power transmission device includes a flywheel, a torque limiter unit, and a damper unit. The torque limiter unit includes first and second side plates and a friction plate. The first side plate is attached to the flywheel. The first side plate is disposed on a first axial side to the flywheel. The friction plate is disposed axially between the first side plate and the second side plate. The damper unit includes input rotational bodies, an output plate, and an elastic member. The output plate is disposed axially between the first side plate and the flywheel.