Friction Device End Play Adjustment Element Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In automatic transmissions, the small inner diameter of the end play adjustment plate interferes with other elements during assembly, making the process cumbersome and requiring additional assembly lines, increasing costs and complexity.
Innovation Solution
The inner diameter of the end play adjustment element is increased to be greater than the outermost diameter of the second friction device, allowing for interference-free assembly and enabling the end play adjustment without disassembling the clutch assembly, thus simplifying the assembly process and reducing equipment costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the inner diameter of the end play adjustment plate is kept small to match the brake plate inner diameter, then the brake assembly structure is compact, but the plate interferes with the clutch assembly during assembly, requiring additional buffer lines and increasing assembly complexity
Solution Approach 1:
The patent changes the inner diameter parameter of the end play adjustment plate from matching the brake plate inner diameter to being larger than the clutch assembly outer diameter. This parameter change eliminates interference with the clutch assembly during assembly, allowing the end play adjustment plate to be assembled independently without requiring additional buffer lines or complex assembly procedures.
2Ease of manufacture
If the inner diameter of the end play adjustment plate is increased to avoid interference with the clutch assembly, then the assembly process is simplified, but the material usage and weight of the adjustment plate increase
Solution Approach 1:
The patent optimizes the inner diameter parameter to be larger than the clutch assembly outer diameter, which simplifies the assembly process by eliminating interference. While this increases material usage compared to a smaller diameter design, the increase is minimal and necessary to achieve the interference-free assembly condition.
3Volume of stationary object
If the end play adjustment plate has a small inner diameter, then it fits within the brake assembly space, but replacing the plate requires disassembling the clutch assembly, increasing maintenance time and complexity
Solution Approach 1:
The patent increases the inner diameter of the end play adjustment plate to be larger than the clutch assembly outer diameter. This design allows the end play adjustment plate to be replaced independently without disassembling the clutch assembly, significantly improving maintenance ease and reducing repair time.
4Stability of the object's composition
If the end play adjustment plate inner diameter matches the brake plate inner diameter, then the design is consistent with the brake assembly, but additional buffer lines are required for assembly, increasing equipment costs
Solution Approach 1:
The patent changes the inner diameter parameter from matching the brake plate to being larger than the clutch assembly. This design modification maintains consistency with the brake assembly structure while eliminating the need for additional buffer lines in the assembly process, thereby reducing equipment costs and simplifying the assembly line configuration.
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 ease of assembly, reduces production costs, and minimizes material usage by allowing the end play adjustment element to be replaced independently without affecting the clutch assembly, thereby simplifying the assembly process and reducing equipment costs.
Implementation Method 1
an end play adjustment element provided on an end of the first friction device to adjust an end play defined between the first friction device and the piston
Implementation Method 2
a first friction device comprising a plurality of discs and a plurality of plates alternately arranged and configured such that a frictional force is created between the discs and the plates by a pressing force of a piston
Data Source
AI summary
A friction device assembly structure for an automatic transmission includes a first friction device and an end play adjustment element. The first friction device includes a plurality of discs and a plurality of plates which are alternately arranged and configured such that a frictional force is created between the discs and the plates by the pressing force of a piston. The end play adjustment element is provided on an end of the first friction device to adjust an end play defined between the first friction device and the piston. The end play adjustment element is hollow such that an inner diameter thereof is greater than an outermost diameter of a second friction device which is provided inside the first friction device. Thereby, the end play adjustment element is able to be assembled without any interference from the second friction device.