Wheel Hub Recess Structure for Higher Brake Disk Clamping Torque
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Solution Overview
Problem
Conventional wheel hubs have limited clamping length and braking torque due to the conventional screw-based connection method of brake disks, which restricts the application of higher bracing forces and does not allow for increased braking torque.
Innovation Solution
A wheel hub design featuring an outer collar region and an inner core region with a primary recess that allows for increased clamping length, enabling higher bracing forces and braking torques, while also improving thermal management through strategic recess placement and rib elements for weight reduction and stress distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the brake disk is connected to the wheel hub using conventional screw-based connection method, then the construction space is limited, but the clamping length is restricted and braking torque cannot be increased
Solution Approach 1:
The invention transitions from a conventional flat connection interface to a three-dimensional connection structure by introducing a recess in the wheel hub that receives the brake disk. This dimensional change allows the clamping length to extend deeper into the wheel hub structure, increasing the effective clamping length from the limited surface level to a substantial depth within the hub, thereby resolving the contradiction between limited construction space and restricted clamping length.
Solution Approach 2:
The brake disk is nested within the recess of the wheel hub, creating a nested configuration where the brake disk sits inside the hub's recessed area. This nesting arrangement allows the brake disk to be positioned deeper within the available construction space, effectively increasing the clamping length without requiring additional external space, thus resolving the contradiction between limited construction space and the need for increased clamping length.
2Force
If the clamping length is increased to achieve higher bracing forces, then the braking torque can be increased, but the construction space requirements increase
Solution Approach 1:
The invention applies local quality by creating a recess specifically in the region where the brake disk connects to the wheel hub. This localized structural modification concentrates the increased clamping length where it is most needed - at the connection interface - without requiring a uniform increase in the entire wheel hub volume. The recess provides the necessary depth for increased bracing force while keeping the rest of the hub compact, thus resolving the contradiction between increased bracing force and hub volume.
3Temperature
If a larger clamping length is used to compensate for thermal effects, then the thermal management improves, but the fastening means requires higher strength
Solution Approach 1:
The recess creates a three-dimensional clamping path that extends deeper into the wheel hub, increasing the clamping length available for thermal expansion compensation. This dimensional change allows the brake disk and wheel hub to maintain thermal contact over a longer path, improving heat dissipation and thermal management capability without requiring excessively high fastening strength, thus resolving the contradiction between thermal effect compensation and fastening means strength requirements.
Data Source
AI summary
A wheel hub includes an outer collar region, as seen in the radial direction, and an inner core region, as seen in the radial direction, wherein, as seen in the axial direction, the inner core region is thicker than the outer collar region, and wherein, in the inner core region, the wheel hub has a substantially axially running primary recess for the connection of a brake disk.