Co-Clamped Brake Disc and Pulsar Ring Assembly
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Solution Overview
Problem
Conventional wheel speed detecting devices require separate securing of the pulsar ring and brake disc, increasing assembly man-hours and complexity.
Innovation Solution
A wheel speed detecting device where the brake disc and pulsar ring are co-clamped to a mounting portion on the wheel hub using fastening members, with extension stays and spigot portions for simultaneous positioning and reduced fastening needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the pulsar ring and brake disc are secured separately to the wheel hub, then each component can be individually positioned and secured, but the assembly process requires more steps and increases man-hours
Solution Approach 1:
The patent combines the pulsar ring and brake disc into a single integrated assembly unit that is secured to the wheel hub together. The pulsar ring is mounted on the brake disc, and both are fastened simultaneously using the same mounting portion and fastening members on the wheel hub, merging two separate securing operations into one unified process.
2Measurement precision
If the pulsar ring is secured separately from the brake disc, then positioning accuracy can be maintained, but the number of fastening members and mounting operations increases
Solution Approach 1:
The wheel hub's mounting portion and fastening members serve dual functions: they secure both the pulsar ring and the brake disc simultaneously. The same mounting structure and fastening components are used for both components, eliminating the need for separate fastening systems and reducing overall device complexity.
3Manufacturing precision
If the pulsar ring is mounted separately on a different mounting surface, then positioning can be achieved, but assembly complexity and time increase
Solution Approach 1:
The patent consolidates the mounting surfaces by positioning both the pulsar ring and brake disc on the same mounting portion of the wheel hub. This unified mounting approach allows both components to be attached in a single operation at one location, eliminating the need for separate mounting surfaces and reducing assembly time.
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 simplifies assembly, reduces man-hours, enhances attachment accuracy, and maintains detection precision while allowing for easier wheel attachment and removal without interfering with the magnetic sensor.
Implementation Method 1
a magnetic sensor (760) configured to detect a passing of a detected portion (722) disposed on the pulsar ring (720)
Data Source
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AI summary
To provide a wheel speed detecting device that ensures reducing man-hours for assembly of a wheel while enhancing accuracy of attachment of a pulsar ring. A wheel hub (730) a pulsar ring (720), and a magnetic sensor (760) are provided. The wheel hub (730) supports an axle (770). A brake disc (700) is secured to the wheel hub (730). The pulsar ring (720) is secured to the wheel hub (730). The magnetic sensor (760) is configured to detect a passing of a pulsar hole (722) disposed on the pulsar ring (720). The wheel hub (730) forms a cylindrical outer peripheral surface (746) as an outer peripheral side spigot portion. The brake disc (700) includes a disc-side spigot portion (715) in contact with the cylindrical outer peripheral surface (746). The pulsar ring (720) includes a ring-side spigot portion (725) in contact with the cylindrical outer peripheral surface (746). The brake disc (700) and the pulsar ring (720) are co-clamped and secured to a hub-side flange (731) formed at the wheel hub (730).