Electric Braking Device Circuit Board Fixation via Motor Pin
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Solution Overview
Problem
Existing electric braking devices for vehicles face challenges in firmly fixing electric circuit boards to calipers without increasing device size, while also suppressing vibration amplification caused by resonance.
Innovation Solution
The electric braking device uses motor pins, pressing force pins, and rotation angle pins press-fitted through a holding member to securely attach the circuit board to the caliper, providing fixation, power supply, and signal transmission, thereby enhancing vibration resistance and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the circuit board is fixed at multiple points to suppress vibration amplification, then vibration resistance is improved, but device size increases
Solution Approach 1:
The motor pin is designed to perform multiple functions: it serves as both a power supply connector and a fixation element. By penetrating the circuit board and being press-fitted into the caliper, it simultaneously establishes electrical connection and provides mechanical support to suppress vibration, eliminating the need for separate fixation structures.
Solution Approach 2:
The patent combines the power supply function and fixation function into a single motor pin structure. The pin that supplies power to the motor also acts as a fixation element that suppresses vibration amplification of the circuit board, merging two previously separate functions into one component.
2Reliability
If the circuit board is firmly fixed to the caliper, then vibration amplification is suppressed, but the structure becomes more complex
Solution Approach 1:
The holding member is designed to perform multiple functions: it provides structural support for the circuit board, enables fixation through the caliper, and facilitates power supply and signal transmission. This multi-functional design eliminates the need for separate fixation structures, reducing overall structural complexity.
Solution Approach 2:
The patent merges the fixation structure with the power supply and signal transmission structures into a single integrated holding member. This consolidation simplifies the overall structure by eliminating the need for separate fixation components while maintaining firm attachment of the circuit board to the caliper.
Data Source
AI summary
This electric braking device is provided with: an electric motor MTR that, in accordance with an operation amount Bpa of a braking operation member BP caused by the driver of the vehicle, generates a pressing force Fba, being a force pressing a friction member MSB against a rotary member KTB that rotates integrally with a wheel WHL of the vehicle; a caliper CRP fixed to the electric motor MTR; a circuit board KBN to which a microprocessor MPR and a bridge circuit BRG are mounted, such that the electric motor MTR is driven; and a motor pin PMT that feeds power from the circuit board KBN to the electric motor MTR. The motor pin PMT penetrates a holding member HJB and is pressed into the circuit board KBN, which is fixed to the caliper CRP by the holding member HJB and the motor pin PMT.