Brake Fluid Pressure Control Device Yoke Arrangement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing brake fluid pressure control devices face challenges in increasing the magnetic path area of yoke parts without enlarging the device size, leading to increased manufacturing costs due to the need for additional clamp pedestals.
Innovation Solution
The design incorporates a chamfered peripheral wall part with a flange and stopper parts to increase the distance between yoke parts, allowing for a larger magnetic path area without increasing the device size, and includes a motor within the housing to reduce overall size, while providing clamp pedestals and secure mounting without enlarging the base.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the area of the yoke part is increased to increase the magnetic path area, then the magnetic path area is improved, but the size of the control device is increased
Solution Approach 1:
The patent repositions the yoke parts from a horizontal arrangement to a vertical arrangement along the axial direction of the piston. This dimensional change allows the magnetic path area to be increased by utilizing the vertical space within the control chamber, rather than expanding the horizontal footprint of the device. The yoke parts are arranged at different heights along the piston axis, enabling larger individual yoke areas without increasing the overall device width or length.
2Ease of manufacture
If clamp pedestals are additionally provided to support clamp fittings during machining, then the manufacturing process is enabled, but the size of the base is increased
Solution Approach 1:
The patent integrates the clamp pedestal function directly into the housing structure by forming protrusions on the inner surface of the housing that extend toward the piston. These protrusions serve dual purposes: they provide the necessary support points for clamping the piston during machining operations, and they are structurally merged with the housing itself rather than being separate additive components. This eliminates the need for additional external clamp pedestals that would increase the base size.
3Area of moving object
If the distance between yoke parts of adjacent coils is increased, then the area of the yoke part is improved, but the size of the housing is increased
Solution Approach 1:
The patent transitions from a horizontal arrangement of yoke parts to a vertical arrangement along the piston axis. By spacing the yoke parts at different heights rather than side-by-side horizontally, the design achieves adequate separation distance for magnetic field independence while maintaining a compact horizontal footprint. The vertical dimension provides the necessary separation without expanding the housing's horizontal dimensions.
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 effectively increases the magnetic path area and reduces the size and manufacturing cost of the brake fluid pressure control device while ensuring stable mounting and improved assembly properties.
Implementation Method 1
an electromagnetic coil (33) including a yoke part (86) having a flat side surface (86a)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A brake fluid pressure control device (10,10B) for a vehicle, includes: a base (40,40B) which includes a brake fluid passage (A1); an electromagnetic valve (15) which opens and closes the brake fluid passage (A1); an electromagnetic coil (33) which drives the electromagnetic valve (15); a control board (99) which controls the electromagnetic valve (15) and the electromagnetic coil (33); and a housing (36) which stores the electromagnetic valve (15), the electromagnetic coil (339 , and the control board (99). The housing (36) includes a peripheral wall part (84) which includes openings formed on a front side and a rear side; a board storage part (85) which stores the control board (99); and a connector part (37). The peripheral wall part (84) has a substantially quadrangular shape in an axial direction, a storage chamber (89) which stores the electromagnetic valve (15) and the electromagnetic coil (33) is provided inside the peripheral wall part (84), the electromagnetic coil (33) includes a yoke part (86) having a flat side surface (86a), and the electromagnetic coil (33) is stored in the storage chmaber (89) such that the side surface (86a) of the yoke part (86) and a corner of the peripheral wall part (84) face each other.