Hydraulic Operating Device Symmetric Base for Dual-Side Use
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Solution Overview
Problem
Current hydraulic operating devices for human-powered vehicles are costly to manufacture due to their design, which often requires separate components for left-hand and right-hand operations, leading to increased production expenses.
Innovation Solution
A hydraulic operating device with a base member, operating member, and mounting member, featuring symmetric designs and hose-attachment holes that allow for dual functionality, reducing manufacturing costs by enabling the same device to serve as both left-hand and right-hand operating devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If separate components are designed for left-hand and right-hand operations, then operational functionality is ensured, but manufacturing cost increases
Solution Approach 1:
The base member is designed with symmetric features including a symmetric mounting member with a centrally positioned mount opening, and hose-attachment holes arranged symmetrically on a reference plane. This universal design allows the same component to be installed on either the left or right handlebar, enabling one part to serve multiple functions and positions, thereby reducing manufacturing costs while maintaining adaptability.
2Ease of manufacture
If symmetric design is implemented for dual-side usage, then manufacturing cost is reduced, but hose-attachment alignment may become complex
Solution Approach 1:
While the overall base member design is symmetric to enable dual-side usage, the hose-attachment holes are positioned asymmetrically relative to the cylinder bore axis. Specifically, one hose-attachment hole is positioned at a first position and the other at a second position that is asymmetric with respect to the cylinder bore centerline. This asymmetric positioning within the symmetric framework allows proper hose routing for both left and right installations without requiring complex adaptive mechanisms.
3Ease of operation
If the mount opening is positioned off-center, then installation flexibility is improved, but the device cannot be used on both sides
Solution Approach 1:
The mounting member features a mount opening that is asymmetric with respect to the cylinder bore axis, positioned at a specific offset to accommodate handlebar mounting requirements. This asymmetric positioning within the overall symmetric base member design allows the device to be properly installed on either the left or right side of the vehicle, achieving both installation flexibility and bilateral interchangeability.
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
The solution reduces manufacturing costs by allowing the same hydraulic operating device to function as both left-hand and right-hand devices, improving design flexibility and stability while maintaining effective operation.
Implementation Method 1
a piston (32) movably provided in the cylinder bore (30) and operatively coupled to the operating member (14) to move relative to the base member (12) in response to a pivotal movement of the operating member (14)
Data Source
AI summary
A hydraulic operating device comprises a base member, an operating member, a piston, and a mounting member. The base member includes a cylinder bore, a first hose-attachment hole, and a second hose-attachment hole. The first hose-attachment hole is configured to be in fluid communication with the cylinder bore. The second hose-attachment hole is configured to be in fluid communication with the cylinder bore. The operating member is pivotally coupled to the base member about a pivot axis. The mounting member is configured to couple the base member to a handlebar. The mounting member includes a mount opening through which the handlebar is to extend. The first hose-attachment hole, the second hose-attachment hole, and the mount opening are provided on a reference plane perpendicular to the pivot axis.