Motorcycle Hydraulic Brake Pipe Layout Along Frame Upper Surface
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Solution Overview
Problem
The existing hydraulic brake apparatus for motorcycles faces challenges in compactly arranging brake fluid pipes along the frame members, which limits the size of equipment between the frame members and complicates the detachment of components like the air cleaner box and fuel tank.
Innovation Solution
The hydraulic brake apparatus features brake fluid pipes that extend rearward along the upper surface of the frame members, with one end being flexible and the other more rigid, and are secured by clamp members, allowing for compact arrangement and easy detachment, while also positioning the hydraulic control unit and front wheel caliper brake fluid pipe on the same side to shorten piping paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If brake fluid pipes are arranged on the inner side surfaces of the frame members, then the brake piping layout is compact, but the space between the right and left frame members becomes smaller, limiting the size of equipment arranged between the frame members
Solution Approach 1:
The brake fluid pipe is arranged to extend along the upper surface of the frame member in the fore-aft direction, transitioning from a lateral arrangement (along inner side surfaces) to a longitudinal arrangement (along upper surface). This dimensional change allows the pipe to utilize the fore-aft space rather than consuming the lateral space between frame members, thereby resolving the contradiction between compact piping layout and available equipment space.
2Reliability
If brake fluid pipes are arranged on the inner side surfaces of the frame members, then the piping is protected within the frame structure, but the detaching operation of equipment becomes difficult due to interference from the pipes
Solution Approach 1:
The brake fluid pipe is extracted from the interior space between the frame members and repositioned to extend along the upper surface. This extraction removes the pipe from the equipment arrangement zone, eliminating interference with equipment detachment operations while the pipe remains integrated with the frame structure for protection.
3Productivity
If the air cleaner box volume is increased to improve air intake performance, then more space is required between the frame members, but the brake fluid pipes occupy this space when arranged on inner side surfaces
Solution Approach 1:
By arranging the brake fluid pipe to extend along the upper surface of the frame member in the fore-aft direction rather than along the inner side surfaces, the pipe relocates from the lateral dimension to the longitudinal dimension. This creates additional lateral space between the frame members, enabling the air cleaner box to be enlarged for improved air intake performance without pipe interference.
Data Source
AI summary
An hydraulic brake apparatus of a motorcycle, including a main frame having a pair of right and left frame members extending rearward from a head pipe, and equipment arranged in a space between the right and left frame members. The hydraulic brake apparatus further includes at least one brake fluid pipe, wherein the at least one brake fluid pipe is arranged so as to extend rearward from near the head pipe along an upper surface at least one of the frame members.