Brake Piston-Spindle Threading to Eliminate Clamping Lag
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Solution Overview
Problem
Existing brake systems experience lag time and increased complexity due to the presence of a nut between the spindle and brake piston, which affects the response time and efficiency of clamping force creation.
Innovation Solution
A brake system design where the spindle is directly threadably connected to the brake piston, eliminating the need for a nut and incorporating anti-rotation features to maintain parallelism and prevent rotation, allowing for immediate axial movement of the brake piston upon spindle rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a nut is provided between the spindle and the brake piston, then the brake system can convert rotational motion to linear motion, but lag time occurs between spindle rotation and brake piston movement
Solution Approach 1:
The patent removes the nut from the brake system, eliminating the intermediate component that caused lag time. The spindle is directly threadably engaged with the brake piston, allowing immediate conversion of rotational motion to linear motion without the delay of nut engagement and movement.
Solution Approach 2:
The patent combines the functions of the spindle and nut by directly threadably engaging the spindle with the brake piston. This merging eliminates the separate nut component and reduces the number of parts while maintaining the rotary-to-linear motion conversion function.
2Ease of manufacture
If a nut is provided between the spindle and the brake piston, then the brake system can create clamping force, but the number of components and manufacturing complexity increases
Solution Approach 1:
The nut is extracted from the system, reducing the number of parts that need to be manufactured and assembled. The direct threaded engagement between the spindle and brake piston simplifies the component list and assembly process.
Solution Approach 2:
The functions previously performed by separate spindle and nut components are merged into a direct threaded connection, reducing the total number of parts and simplifying manufacturing and assembly operations.
3Weight of moving object
If a nut is provided between the spindle and the brake piston, then the brake system can convert torque to linear force, but the weight and packaging space increase
Solution Approach 1:
The nut is removed from the brake system, directly reducing the overall weight. The elimination of this intermediate component also reduces the packaging space required for the brake system.
Solution Approach 2:
By merging the spindle and brake piston into a direct threaded connection, the total component mass is reduced, resulting in a lighter brake system that requires less packaging space.
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 design reduces the number of components, simplifies manufacturing and assembly, decreases weight and packaging space, and enhances response time by eliminating lag time in creating clamping force, while maintaining the brake piston's position and preventing rotation during operation.
Implementation Method 1
The piston pocket includes a threaded portion that is adapted to directly, threadably engage a threaded portion of a spindle. Rotation of the spindle causes the brake piston to move axially along the longitudinal axis as soon as the spindle is rotated.
Data Source
AI summary
A brake system that includes a brake piston and a spindle. The brake piston includes a piston pocket defined in the brake piston. The piston pocket includes a threaded portion. The spindle includes a threaded portion. The threaded portion of the spindle is adapted to threadably engage the threaded portion of the piston pocket.