ABS Hydraulic Unit Angular Piston Hole for Handlebar Mounting
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Solution Overview
Problem
Existing ABS hydraulic units for motorcycles face space limitations when attached to handlebars, limiting their degree of freedom and compatibility with various motorcycle designs.
Innovation Solution
The ABS hydraulic unit features a piston insertion hole oriented at an angle intersecting but not orthogonal to the handlebar, allowing for a smaller width and improved attachment flexibility, along with a simplified configuration that includes a single-channel hydraulic circuit and strategic placement of the power supply connector to reduce cable length and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the piston insertion hole is formed along a direction parallel to the handlebar, then the ABS hydraulic unit can be easily attached to the handlebar, but the width of the ABS hydraulic unit in the direction parallel to the handlebar becomes larger, reducing the degree of freedom for attachment
Solution Approach 1:
The piston insertion hole is formed along a direction that intersects but is not orthogonal to the handlebar (at an angle of 45 degrees, for example), rather than being parallel or orthogonal to it. This angular orientation allows the ABS hydraulic unit to have a smaller width in the direction parallel to the handlebar while still maintaining ease of attachment, thereby improving the degree of freedom for attachment to handlebars of various motorcycle types.
2Ease of manufacture
If the power supply connector is disposed on the side opposite the mounting portion in the first direction, then the cable length can be shortened and manufacturing cost reduced, but the configuration becomes more complex
Solution Approach 1:
The power supply connector is strategically disposed on the side opposite the mounting portion in the first direction (a direction intersecting the handlebar), which is the side closer to where the motorcycle battery is typically installed (under the seat or in the side cowl). This localized placement optimizes cable routing and shortens cable length, reducing manufacturing cost without significantly increasing overall configuration complexity.
3Volume of moving object
If the hydraulic circuit is configured by one channel, then the ABS hydraulic unit can be reduced in size and configuration simplified, but the functionality may be limited
Solution Approach 1:
The hydraulic circuit is configured as a single channel that performs multiple functions: it supplies brake fluid to the wheel cylinder, enables ABS control by adjusting pressure, and maintains braking capability. This single-channel design achieves multi-functionality, reducing the size and configuration complexity of the ABS hydraulic unit while maintaining essential braking and anti-lock functions suitable for motorcycle applications.
Data Source
Figure 1(A)~1(C)
Figure 2
Figure 3(A)~3(B)
AI summary
To improve the degree of freedom with which an ABS hydraulic unit is attached to a handlebar. An ABS hydraulic unit comprises: a main housing that has at least part of a hydraulic circuit formed inside and is equipped with a mounting portion for mounting a brake lever and an attachment portion having at least part of a side surface of a through hole formed along a first direction, the through hole being for attaching the ABS hydraulic unit to a handlebar; and a master cylinder that has a piston portion that moves in conjunction with the brake lever, the master cylinder being for increasing, with the movement of the piston portion, the pressure of brake fluid inside the hydraulic circuit. A piston insertion hole that extends in the moving direction of the piston portion and is for inserting the master cylinder is formed in the main housing along a second direction that intersects, but is not orthogonal to, the first direction.