Brake Disk Connection Device Using Non-Positive Locking
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Solution Overview
Problem
Existing connection devices for brake disks and wheel hubs require costly internal threads, which can compromise the loading capacity and are complex to produce, especially in commercial vehicle applications where safety and durability are critical.
Innovation Solution
A connection device that uses a non-positive locking mechanism, eliminating the need for internal threads by interacting with the wheel hub's recess in a frictional or non-positive locking manner, allowing for a thread-free design that is simpler to produce and maintain the necessary loading capacity, featuring a sleeve-shaped primary region and collar-shaped secondary region for enhanced stability and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If an internal thread is used in the wheel hub recess for screw-connecting the brake disk, then the connection achieves sufficient loading capacity, but the manufacturing cost increases and production complexity increases
Solution Approach 1:
The invention extracts the threading operation from the wheel hub production process by using a separate connection device with external threading. The connection device is inserted into a simple recess in the wheel hub and then threaded externally, eliminating the need to machine internal threads in the wheel hub itself. This resolves the contradiction by maintaining loading capacity through proper threading while simplifying wheel hub manufacturing.
Solution Approach 2:
The connection device serves as an intermediary element between the wheel hub and brake disk. It features a first portion that interfaces with the wheel hub recess and a second portion that threads into the brake disk. This mediator approach allows the wheel hub to have a simple recess geometry while the connection device provides the necessary threading function, thus reducing manufacturing complexity while maintaining connection strength.
2Reliability
If an internal thread is machined in the wheel hub recess, then the brake disk can be securely connected, but the production time and manufacturing steps increase
Solution Approach 1:
The connection device is pre-threaded externally before insertion into the wheel hub. The threading operation is performed in advance on the connection device itself rather than during wheel hub assembly. This preliminary action maintains connection security through proper threading while improving production efficiency by eliminating time-consuming internal threading operations from the wheel hub manufacturing process.
Solution Approach 2:
The invention replaces the mechanical threading system (internal threads in wheel hub) with an alternative mechanical system (external threads on connection device). This substitution maintains the functional requirement of secure connection while simplifying the manufacturing process, as external threading on the connection device can be performed more efficiently than internal threading in the wheel hub.
3Ease of manufacture
If a thread-free recess design is used in the wheel hub, then manufacturing is simplified, but the connection device must be deformable to achieve non-positive locking
Solution Approach 1:
The connection device incorporates dynamic characteristics through its deformable first portion that can elastically deform during insertion into the recess. This dynamic behavior allows the rigid connection device to adapt to the thread-free recess geometry and achieve secure non-positive locking. The simplicity of the wheel hub recess is maintained while the connection device's controlled deformability enables reliable connection without increasing overall system complexity.
Solution Approach 2:
The connection device utilizes parameter changes in its mechanical properties, specifically its ability to deform elastically under insertion forces. This parameter change allows the device to transition from a rigid state during normal operation to a slightly deformable state during installation, enabling it to engage with the thread-free recess and achieve secure locking. This resolves the contradiction by keeping the wheel hub manufacturing simple while enabling the connection device to adapt through controlled deformation.
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 provides a sturdy, cost-effective, and efficient connection that maintains the loading capacity while simplifying the production process, ensuring reliable operation under heavy loads and reducing assembly complexity, with the added benefit of thermal isolation between the brake disk and wheel hub.
Implementation Method 1
the connection device is deformed such that there is non-positive locking contact with the inner side of the recess
Data Source
AI summary
A connection device for connecting a brake disk to a wheel hub, wherein the connection device is arrangeable at least in part in a recess of the wheel hub and is transferable into a fixed state in which the connection device interacts in a non-positive locking manner with the recess.