Rocker Switch Knob Support Structure Against Inclined Detachment
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Solution Overview
Problem
Existing rocker switch devices face issues with the detachment of the operation knob during inclined rocking operations due to misalignment of the support shafts, leading to potential disengagement.
Innovation Solution
The rocker switch device incorporates projection portions on the support portions or operation knob surfaces to restrict movement in misaligned directions, preventing detachment by maintaining contact and alignment during rocking operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the operation knob is designed to rock in pulling-up and pushing-down directions about support shafts, then the switching device can achieve five operating states with reduced components, but the operation knob may detach when operated in an inclined orientation due to misalignment of holes with support shafts
Solution Approach 1:
The invention introduces asymmetric projection portions on the support portions that extend in the vertical direction. These projections create an asymmetric constraint structure that prevents the operation knob from detaching during inclined operations while maintaining the simple five-state switching functionality. The projections are positioned to provide restraint in the detachment direction without interfering with the normal rocking motion.
Solution Approach 2:
The projection portions act as intermediary elements between the support portions and the operation knob. These projections physically intervene to prevent misalignment and detachment when the operation knob is operated in inclined orientations, serving as a mechanical mediator that maintains proper alignment without adding complex structural components.
2Ease of manufacture
If the holes of the operation knob are brought close to the support portions from above for easy assembly, then the assembly process is simplified, but the operation knob becomes misaligned with the support shafts during inclined rocking operations
Solution Approach 1:
The projection portions are pre-formed on the support portions before the operation knob is assembled. These projections serve as preliminary alignment guides that ensure the operation knob maintains proper alignment with the support shafts during assembly and subsequent inclined operations, preventing misalignment before it occurs.
Solution Approach 2:
The asymmetric projection portions create a geometric constraint that compensates for the simplified assembly approach. By positioning these projections strategically, the design allows easy top-down assembly while simultaneously ensuring precise alignment is maintained during inclined rocking operations through the geometric interference of the projections.
Data Source
Figure 1~2
Figure 3~4
AI summary
A rocker switch device (1) includes an operation knob (3) with a close bottom cylindrical shape configured to be operated, a body (2) including a contact point configured such that current is interruptible by the operation knob and a support portion (2a) that projects toward an inside of the operation knob and supports the operation knob in a manner allowing for rocking, and a projection portion (20) that projects from a portion of a surface of the support portion of the body that opposes the operation knob or a portion of a surface of the operation knob that opposes the body toward an opposing member.