Hydraulic Unit Bore Positioning for Brake System Miniaturization
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Solution Overview
Problem
Existing hydraulic units for slip-controlled brake systems are not simple, economical, or miniaturizable without compromising immersion tightness and noise behavior.
Innovation Solution
The hydraulic unit features a housing body with optimized bore positioning and configuration, including a blind leakage receiving bore, noise damping chambers, and a tie bolt fastening mechanism for the electric motor, which ensures miniaturization, immersion tightness, and reduced noise, while allowing for easy assembly and space-efficient design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the housing body is designed with multiple bores for valves and pump, then the functionality is improved, but the device complexity increases
Solution Approach 1:
The housing body is segmented into multiple functional zones with precisely positioned bores for different components (inlet valves, outlet valves, pump, motor). This segmentation allows each component to be independently positioned and functionally optimized while maintaining overall system integration through the housing structure.
Solution Approach 2:
The housing body serves multiple functions simultaneously: it provides structural support, contains and positions multiple valve bores, houses the pump bore, accommodates the motor, and manages hydraulic fluid pathways. This multi-functionality reduces the need for separate structural components.
2Volume of moving object
If the housing body size is reduced for miniaturization, then the volume is improved, but the manufacturing precision requirements worsen
Solution Approach 1:
The design optimizes the spatial arrangement of bores in three-dimensional space within the housing body. By carefully positioning bores at specific angles and depths (transverse to entry direction, perpendicular orientations), the patent achieves compact volume while maintaining adequate clearance and positioning accuracy for all components.
Solution Approach 2:
The patent employs specific geometric parameters for bore positioning, including angular orientations (transverse, perpendicular) and dimensional relationships between bores. These parameter optimizations enable miniaturization while ensuring that manufacturing tolerances remain achievable for precise bore alignment and component fitting.
3Adaptability or versatility
If the number of bores and components is increased for enhanced functionality, then the adaptability is improved, but the ease of manufacture worsens
Solution Approach 1:
The housing body is designed with distinct, pre-positioned bores for different components (inlet valves, outlet valves, pump, motor), allowing each component to be manufactured and assembled independently. This segmentation simplifies the manufacturing process by enabling modular assembly rather than complex integrated machining.
Solution Approach 2:
Different regions of the housing body are optimized for specific functions: valve holding bores are positioned for easy valve installation, the pump bore is oriented for optimal pump mounting, and the motor holding bore is perpendicular to the pump bore for efficient space utilization. This local optimization facilitates easier manufacturing and assembly for each component zone.
Data Source
AI summary
A hydraulic unit for a slip-controlled braking system includes a housing body provided with a flange surface into which at least one additional bore joins. The bore, in addition to a cable through bore arranged in the housing body, is covered by an electromotor and/or a control device. The additional bore is either a leakage receiving bore or a noise reducing chamber.