Handlebar Switch Center-Expanded Case Asymmetry
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Solution Overview
Problem
Conventional handlebar switches for motorcycles appear large due to their packaging of multiple switches, affecting their external appearance and compactness.
Innovation Solution
A handlebar switch design featuring a center-expanded switch case with manipulation members positioned on the first face, a thinner second face, and chamfered corners, which creates a visually compact appearance while maintaining switch capacity and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple switches are packaged together in a conventional switch case, then the switch capacity is sufficient, but the external appearance becomes large and bulky
Solution Approach 1:
The switch case is designed with an expanded center portion that protrudes beyond the end portions in the width direction, creating a non-uniform width profile. This dimensional variation allows the manipulation members to be positioned in the expanded center area, effectively utilizing space in a different dimensional arrangement to accommodate multiple switches while maintaining a compact overall appearance when viewed from the front.
Solution Approach 2:
The switch case employs an asymmetric width distribution where the center portion has a greater width than the end portions. This asymmetric design concentrates the manipulation members in the expanded center region, creating a visually compact appearance at the ends while providing sufficient internal space in the center for housing multiple switches with their manipulation members.
2Volume of moving object
If the switch case is made compact, then the external appearance is improved, but the switch capacity is reduced
Solution Approach 1:
By expanding the center portion in the width direction beyond the end portions, the design creates additional internal volume concentrated where the manipulation members are needed, while maintaining a compact overall width at the ends. This dimensional strategy allows sufficient switch capacity in the expanded center region without increasing the maximum external dimensions.
Solution Approach 2:
The switch case has non-uniform width distribution with the center portion being wider than the end portions. This local quality variation concentrates the internal capacity where it is most needed (in the center for manipulation members) while keeping the ends compact for improved external appearance, effectively optimizing both capacity and appearance in different locations.
3Volume of moving object
If manipulation members are arranged in the center expanded section, then the visual compactness is improved, but the arrangement complexity increases
Solution Approach 1:
The asymmetric width profile with an expanded center portion naturally guides the arrangement of manipulation members to the center region. This asymmetric structure simplifies the design process by providing a clear spatial organization principle: place manipulation members in the expanded center area where space is most abundant, rather than attempting uniform distribution.
Data Source
AI summary
A handlebar switch can include a switch case housing switches, and manipulation members arranged on the switch case and configured to be manipulated by a driver to operate the respective switches. A center portion of the switch case 66 on which the manipulation members are arranged is formed as an expanded section expanded in radial directions of a main body section beyond a right end portion, and a left an end portion of the main body section. The manipulation members are arranged in a center part of the expanded section.