Torque Converter Reaction Plate Interface With Single-Weld Flanges

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Solution Overview

Problem

Current connection methods between the reaction plate, torque converter cover, and pump in torque converter assemblies are labor-intensive and costly, requiring expensive labor and tooling.

Innovation Solution

A modified connection interface using axially extending flanges on the torque converter cover, reaction plate, and pump, where a single connection, such as a weld or press-fit, directly contacts these components, simplifying assembly and reducing costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple separate connections are used between the reaction plate, torque converter cover, and pump, then reliable mechanical connection is achieved, but assembly complexity and manufacturing cost increase

Engineering Contradiction:
Improveconnection reliabilityVSAvoidassembly complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple separate connection operations (connecting reaction plate to cover, and cover to pump) into a single integrated connection step. The single connection member simultaneously joins all three components (reaction plate, torque converter cover, and pump), eliminating the need for multiple separate connections and reducing assembly complexity while maintaining connection reliability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The single connection member serves multiple functions: it connects the reaction plate to the torque converter cover, connects the torque converter cover to the pump, and provides structural support for all three components. This multi-functional design reduces the number of separate connection elements needed and simplifies the overall assembly process.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If multiple separate connections are used between the reaction plate, torque converter cover, and pump, then secure mechanical attachment is achieved, but labor and tooling costs increase

Engineering Contradiction:
Improvemechanical attachmentVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent merges multiple connection operations into a single manufacturing step. By using one connection member to join all three components simultaneously, the patent reduces the number of tooling setups, labor operations, and quality inspection steps required, thereby lowering manufacturing costs while maintaining secure mechanical attachment.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The components (reaction plate, torque converter cover, and pump) are positioned and aligned in advance before the single connection operation. This preliminary positioning ensures that when the single connection member is installed, all three components are already in their correct relative positions, eliminating the need for multiple separate connection operations and reducing manufacturing complexity.

Inventive Principle:
Principle #10Preliminary action

3Stability of the object's composition

If traditional multiple connection methods are used, then component alignment is achieved, but assembly time increases

Engineering Contradiction:
Improvecomponent alignmentVSAvoidassembly time
Core Design Contradiction:
Stability of the object's compositionVSLoss of time

Solution Approach 1:

The patent employs preliminary positioning features and alignment mechanisms that prepare the reaction plate, torque converter cover, and pump in advance. These features guide the components into their correct relative positions before the single connection operation, ensuring proper alignment is achieved without requiring multiple separate connection steps and reducing overall assembly time.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

By combining alignment and connection operations into a single integrated process, the patent eliminates the time required for multiple separate connection operations. The single connection member is installed while all components are already aligned, maintaining component alignment stability while significantly reducing assembly time.

Inventive Principle:
Principle #5Merging (Combining)

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 assembly complexity and costs by providing a reliable, cost-effective connection that securely joins the torque converter components, enhancing manufacturing efficiency and assembly simplicity.

Implementation Method 1

the single connection comprises a weld, which directly contacts the torque converter cover, the reaction plate, and the torque converter pump

Methodology Applied
Scientific EffectWelding: Welding

Implementation Method 2

a press-fit connection can be defined between the second axially extending flange and the first axially extending flange

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS11649883B1Connection interface for reaction plate in torque converter
Publication Date: 2023.05.16 SCHAEFFLER TECHNOLOGIES AG & CO KG
  • US11649883B1 patent drawing
  • US11649883B1 patent drawing
  • US11649883B1 patent drawing

AI summary

A torque converter assembly is disclosed herein. The assembly can include a torque converter cover having a first axially extending flange, a reaction plate having a second axially extending flange, and a torque converter pump having a third axially extending flange. The first axially extending flange, the second axially extending flange, and the third axially extending flange are connected to each other via a single connection. In one aspect, the single connection comprises a weld.