Brake Pressure Control Board Grounding With Conductive Plate Spring
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Solution Overview
Problem
Existing brake hydraulic pressure control systems that ground the control board using a coil spring require high positional and dimensional accuracy for through holes, leading to increased manufacturing costs due to the need for precise machining.
Innovation Solution
A brake hydraulic pressure control system using a conductive plate spring with a longer free length than the distance between the control board and the connected component, eliminating the need for through holes to prevent deformation perpendicular to the spring's expansion and contraction direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a coil spring is used to ground the control board, then the control board can be electrically connected to the substrate, but the coil spring deforms under vibration perpendicular to its expansion and contraction direction, causing loss of electrical connection
Solution Approach 1:
The patent changes the structural parameters of the spring from a coil configuration to a plate configuration. This parameter change fundamentally alters the deformation characteristics, making the plate spring resistant to deformation in directions perpendicular to its expansion and contraction axis, thereby maintaining stable electrical connection under vibration conditions
Solution Approach 2:
The plate spring design eliminates the need for complex through-hole machining and precise positioning features, representing a simpler, more robust solution that is easier and cheaper to manufacture while maintaining reliable electrical connection
2Manufacturing precision
If a through hole is formed to hold the coil spring, then the coil spring can be restrained from deforming perpendicular to its expansion direction, but high positional and dimensional accuracy is required for machining the through hole, increasing manufacturing cost
Solution Approach 1:
The plate spring design eliminates the need for complex through-hole machining and precise positioning features. The plate spring can be simply inserted and retained without requiring high-precision holes, dramatically reducing manufacturing complexity and cost while maintaining functional effectiveness
Solution Approach 2:
The invention extracts the problematic through-hole requirement from the design by using a plate spring configuration that does not need to be held within a precision-machined hole. The plate spring's geometry inherently prevents perpendicular deformation without requiring extraction of material to create containment features
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 reduces manufacturing costs by allowing for lower positional and dimensional accuracy requirements during machining, thereby suppressing the increase in costs associated with existing systems using coil springs.
Implementation Method 1
the plate spring has a first end part connected to the control board and a second end part connected to the electrically connected component... the plate spring is less susceptible to deform in the direction perpendicular to the direction in which the plate spring expands and contracts
Implementation Method 2
the control board is electrically connected to the substrate via the plate spring and the electrically connected component. Thereby, it is possible to ground the control board, and thus suppress the electrostatic charging of the control board
Data Source
AI summary
To achieve a brake hydraulic pressure control system which makes it possible to suppress an increase of the manufacturing cost as compared to existing brake hydraulic pressure control systems which ground a control board using a coil spring.A brake hydraulic pressure control system according to the present invention includes: a metallic substrate (80) in which a flow channel for brake fluid is formed; and a control board (76) of a hydraulic pressure control mechanism for the brake fluid provided in the flow channel. The brake hydraulic pressure control system according to the present invention further includes at least one conductive plate spring (90) which is provided between the control board (76) and a component that is electrically connected to the substrate (80). The free length of the plate spring (90) is longer than the distance between the control board (76) and the component, and the plate spring (90) has a first end part (93) connected to the control board (76) and a second end part (94) connected to the component.