Brake Backing Plate Coupling With Elastic Locking Pin Retention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing brake systems for vehicles, particularly aircraft, face challenges in efficiently coupling the backing plate to the torque tube, requiring additional components like cotter pins that limit heat sink material and complicate installation, while also not effectively managing the transfer of compression forces during braking.
Innovation Solution
A coupling system is introduced that uses a pin with a shank portion and locking tail, coupled by an elastic member, to securely attach the backing plate to the torque tube, allowing for increased heat sink material and simplified installation, while managing compression forces efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional cotter pins are used to couple the backing plate to the torque tube, then the connection is secure, but the heat sink material is limited and installation is complicated
Solution Approach 1:
The patent removes the cotter pin component from the coupling system, extracting the problematic element that limited heat sink material and complicated installation. The pin with locking tail directly couples the backing plate to the torque tube without requiring separate cotter pins, thereby increasing available space for heat sink material and simplifying the installation process
Solution Approach 2:
The patent combines the pin and locking tail into a single integrated component that performs multiple functions: coupling the backing plate to the torque tube and providing secure retention. This merging eliminates the need for separate cotter pins and reduces the number of parts, thereby improving heat transfer performance by increasing heat sink material space and simplifying installation
2Reliability
If additional components like cotter pins are used for coupling, then the connection is secure, but the number of parts increases and installation becomes more complex
Solution Approach 1:
The patent merges the pin and locking tail into a single integrated component that performs multiple functions: coupling the backing plate to the torque tube and providing secure retention. This reduces the total number of components while maintaining connection security through the locking tail engagement
Solution Approach 2:
The pin component serves multiple functions: it acts as a coupling element between the backing plate and torque tube, provides structural support, and the locking tail ensures secure retention. This multi-functionality eliminates the need for separate cotter pins and other additional components, reducing overall device complexity while maintaining reliability
3Ease of operation
If a simple pin design is used to couple the plate member to the support member, then installation is simplified, but effective management of compression forces is compromised
Solution Approach 1:
The patent combines the pin and locking tail into a single component that simultaneously provides simple installation through direct insertion and effective compression force management through the locking tail engagement with the torque tube, eliminating the need for complex separate components
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 coupling system enhances heat transfer performance and simplifies installation by eliminating the need for cotter pins, allowing for improved operational life and efficient force transfer between the backing plate and torque tube.
Implementation Method 1
an elastic member configured to dispose within the plate passage and between the head portion and the locking tail when the head portion is disposes within the plate passage and the locking tail engages the support member, wherein the elastic member is configured to exert a force on the pin in a direction from the support member to the plate member
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Brake system (12) configured to compress a brake disc stack to reduce and/or limit rotational motion of a wheel about a wheel axis. The brake system (12) is configured to transmit a compression force on the disc stack to a plate member (20), such as a backing plate. The plate member (20) may be configured to transmit the compression force to a support member (64) such as a torque tube via one or more torque pads. The brake system (12) includes a coupling system configured to couple the plate member and the support member. The coupling includes an elastic member (96) configured to exert a force on a pin (97) in a direction opposite the compression force to assist in keeping a locking tail of the pin (97) engaged with the support member. (64)