Damper Disc Assembly Intermediate Hub Torque Capacity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional damper disc assemblies face limitations in increasing transmission torque capacity and operational angle due to space constraints and the need for stop pins in the outer circumferential portion of the flange, which restricts the relative torsion angle and limits the space for torsion springs.
Innovation Solution
The damper disc assembly incorporates an intermediate hub between the hub flange and output hub, coupled by first and second elastic members, preventing relative rotation by specific angular ranges, thus eliminating the need for stop pins in the outer circumferential portion and allowing for increased space and torque capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If stop pins are arranged on the inner circumferential side of the outer circumferential edges of the input plates, then the stop mechanism can be configured, but the relative torsion angle between the input plates and the flange cannot be sufficiently increased
Solution Approach 1:
The invention moves the stop mechanism from the radial dimension (inner circumferential side of outer edges) to the axial dimension (between flange and output hub). This dimensional shift allows the stop pins to be positioned in the axial gap rather than consuming radial space, thereby enabling larger relative torsion angles without compromising the stop mechanism functionality.
Solution Approach 2:
The stop pins are nested within the axial space between the flange and the output hub, utilizing the existing axial gap in the structure. This nesting approach allows the stop mechanism to be integrated into the existing assembly without requiring additional radial space, thus preserving the outer circumferential area for torsion spring placement.
2Power
If stop pins are used in the conventional configuration, then the stop mechanism functions, but the space for torsion springs is limited and transmission torque capacity cannot be increased
Solution Approach 1:
The invention extracts the stop mechanism from the outer circumferential region where it would conflict with torsion spring placement. By relocating the stop pins to the axial space between the flange and output hub, the outer circumferential area is freed up, allowing torsion springs to be positioned optimally for maximizing transmission torque capacity.
3Ease of operation
If a considerable amount of space is provided around the flange portion for the stop mechanism, then the stop pins can be properly configured, but the relative torsion angle of the input plates and flange cannot be sufficiently increased
Solution Approach 1:
The invention merges the stop mechanism with the existing axial structure between the flange and output hub. Instead of creating a separate radial stop mechanism that would complicate the design, the stop pins are integrated into the axial gap that already exists in the assembly, simplifying the overall structure while achieving the desired torsion angle.
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 configuration enables a wider operational angle and enhanced transmission torque capacity without the need for stop pins, optimizing the space for elastic members and improving torque transmission efficiency.
Implementation Method 1
The plurality of first elastic members couple the hub flange and the intermediate hub elastically in a rotation direction. The plurality of second elastic members couple the intermediate hub and the output hub elastically in the rotation direction.
Data Source
AI summary
A clutch disc assembly includes a hub flange, an output hub, an intermediate hub, a plurality of first elastic members, and a plurality of second elastic members. Power from an engine is input into the hub flange. The output hub can be coupled to an input shaft of the transmission. The intermediate hub is arranged between the hub flange and the output hub in a diameter direction such that relative rotation with the hub flange by an angle greater than or equal to a first angular range is prevented, and such that relative rotation with the output hub by an angle greater than or equal to a second angular range is prevented. The plurality of first elastic members couple the hub flange and the intermediate hub elastically in a rotation direction. The plurality of second elastic members couple the intermediate hub and the output hub elastically in the rotation direction.