Motorcycle Brake Pipe Mounting via Common Fastener
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In saddle-straddling type motor vehicles, the fixed arrangement of brake pipes to the frame reduces flexibility and increases the vehicle size due to the need for multiple fixing points, limiting the arrangement of other components.
Innovation Solution
The hydraulic unit is positioned between the seat frames, with brake pipes extending in a common direction from the unit to the pivot shaft, allowing for a common fastening member to fix both pipes to the seat frame, reducing the number of components and creating space for other components, while using flexible and rigid pipes made of different materials to minimize space occupation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If brake pipes are individually fixed to the frame at multiple locations, then the brake pipes are securely positioned, but the number of fixing points increases, reducing flexibility in component arrangement and increasing vehicle size
Solution Approach 1:
The patent combines multiple brake pipe fixing operations into a single fixing point. The left and right brake pipes are both fixed to the seat frame at one location using a common fastening member, eliminating the need for separate fixing points for each pipe. This merging approach maintains secure positioning while significantly improving flexibility in component arrangement.
Solution Approach 2:
The common fastening member serves multiple functions simultaneously: it fixes both the left and right brake pipes to the seat frame, and it positions both pipes in the rearward direction. This multi-functional component reduces the overall number of parts needed while maintaining reliable brake pipe positioning.
2Reliability
If brake pipes are individually fixed to the frame, then each pipe is securely positioned, but spaces for fixing are needed at multiple locations, increasing vehicle size
Solution Approach 1:
The patent merges the fixing locations of multiple brake pipes into a single space on the seat frame. By positioning both left and right brake pipes at one fixing point rather than distributing them across multiple locations, the overall vehicle size is reduced while maintaining secure fixation of all brake pipes.
3Device complexity
If common fastening member is used to fix both brake pipes, then the number of components is decreased, but the brake pipes must be arranged in a specific configuration
Solution Approach 1:
The patent uses a common fastening member to fix both left and right brake pipes to the seat frame at a single location. This approach decreases the number of components by eliminating separate fastening members for each pipe, while the specific arrangement of pipes extending in the rearward direction from the hydraulic unit accommodates this unified fixing approach.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A hydraulic unit (50) is provided below a seat (8) held by a seat frame (2) and above a rear wheel suspension swing arm (9). At least a part of the hydraulic unit (50) is positioned between a pair of frame members (2a,2b) of the seat frame (2). A brake (5a) for braking a front wheel (5) is connected to a hydraulic unit (50) through a front wheel brake pipe (L2), and a brake (10a) for braking a rear wheel (10) is connected to the hydraulic unit (50) through a rear wheel brake pipe (L4). A joining member (60) of the front wheel brake pipe (L2) and a joining member (70) of the rear wheel brake pipe (L4) are fixed to the seat frame (2) by a common fastening member between the hydraulic unit (50) and a pivot shaft (AP) of the swing arm (9) when seen in side view to sandwich a part of the seat frame (2) therebetween.