Bicycle Hydraulic Bracket with Integrated Attachment Bore
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Solution Overview
Problem
The bicycle hydraulic system requires a reduction in the number of parts, simplification, and cost reduction of its components, particularly in the hydraulic operating device, to enhance efficiency and usability.
Innovation Solution
A bicycle hydraulic operation device featuring a bracket with a grip portion, a hydraulic cylinder, a piston, and an attachment bore that allows fluid flow, along with a hose, compression sleeve, and connecting bolt, which simplifies the connection and reduces the number of parts while maintaining functionality, including a mechanical shifting unit and electrical switch unit for integrated braking and shifting functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the hydraulic operating device uses traditional separate components for hose attachment, then the connection reliability is maintained, but the device complexity and part count increase
Solution Approach 1:
The patent combines the hose attachment function directly into the bracket by providing an attachment bore with threaded portion and compression sleeve integrated into the bracket structure. This merging of the hose attachment mechanism with the bracket eliminates separate attachment components while maintaining secure hose connection, thereby reducing part count without compromising connection reliability
Solution Approach 2:
The bracket is designed with multi-functionality by incorporating both the structural support function and the hose attachment function within a single component. The attachment bore with threaded portion and compression sleeve allows the bracket to serve as both a mounting structure and a fluid connection point, reducing the need for separate dedicated attachment components
2Device complexity
If the hydraulic operating device integrates multiple functions into single components, then the device complexity is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The attachment bore is segmented into distinct functional zones: a threaded portion for screw engagement and a compression sleeve section for hose clamping. This segmentation within the integrated structure allows each zone to be manufactured and assembled with appropriate tolerances, reducing the overall manufacturing precision burden while maintaining functional integration
Solution Approach 2:
The compression sleeve acts as an intermediary element between the threaded portion and the hose. It provides a dedicated interface for hose attachment that can be manufactured with standard tolerances, mediating between the bracket structure and the hose to achieve reliable connection without requiring ultra-precise manufacturing of the entire integrated assembly
3Area of stationary object
If the attachment bore is arranged radially surrounding the hydraulic cylinder, then the space utilization is optimized, but the manufacturing complexity increases
Solution Approach 1:
The attachment bore is nested within the bracket structure in a radial arrangement around the hydraulic cylinder, similar to a nested doll configuration. This allows the attachment bore to utilize the existing bracket material volume efficiently, optimizing space utilization while being manufactured as an integral feature of the bracket rather than as a separate complex component
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 the complexity and cost of the hydraulic operating device while maintaining its functionality, providing an efficient and user-friendly system for both braking and gear shifting with a minimized part count and optimized design.
Implementation Method 1
the connecting bolt is adapted to be threaded to the thread portion to compress the compression sleeve between the step and the connecting bolt
Implementation Method 2
a piston located within the hydraulic cylinder, and the piston is movable in an axial direction of the hydraulic cylinder; and an attachment bore provided on the bracket. The attachment bore is connected with the hydraulic cylinder so that fluid flows through the attachment bore in response to movement of the piston
Data Source
AI summary
A bicycle hydraulic operation device includes a bracket configured to be attached to a bicycle part. A hydraulic cylinder is provided on the bracket, and a piston is located within the hydraulic cylinder. An attachment bore provided on the bracket, and the attachment bore is connected with the hydraulic cylinder. The attachment bore includes a step. At least part of the attachment bore is arranged in an area that radially surrounds the hydraulic cylinder.