Rotary Electrical Connection Assembly Axial Miniaturization
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Solution Overview
Problem
Existing hair styling products face challenges in miniaturization due to the increased length required for rotary electrical connections with multiple poles, which hinders product compactness.
Innovation Solution
A rotary electrical connection assembly is designed with a sleeved configuration between different types of contacts, allowing for more groups of contacts to be disposed without increasing the axial dimension, utilizing rotary and fixed contacts at different radial positions to optimize space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple groups of closed annular contacts are axially disposed, then electrical connectivity for multiple poles is achieved, but the axial length of the rotary electrical connection assembly increases
Solution Approach 1:
The patent applies nesting by placing rotary closed contacts inside rotary non-closed contacts, and fixed closed contacts inside fixed non-closed contacts. This nested arrangement allows multiple contact groups to share the same axial space, enabling electrical connectivity for multiple poles without increasing the axial length of the assembly.
Solution Approach 2:
The patent transitions from axial arrangement to radial arrangement by positioning contacts at different radial positions within the same axial plane. This dimensional change allows multiple contact groups to be disposed side-by-side radially rather than stacked axially, reducing the axial length while maintaining electrical connectivity.
2Reliability
If more contact groups are disposed axially, then electrical connectivity is improved, but miniaturization of the device is hindered
Solution Approach 1:
By nesting contacts within each other (rotary closed inside rotary non-closed, and fixed closed inside fixed non-closed), the patent reduces the overall volume required for multiple contact groups. This nested configuration allows contact groups to occupy overlapping spatial volumes, enabling miniaturization while maintaining electrical connectivity.
Solution Approach 2:
The patent utilizes radial positioning to arrange contact groups in the radial dimension rather than extending them axially. This dimensional reorganization allows multiple contact groups to coexist within a compact cylindrical volume, facilitating device miniaturization without compromising electrical connectivity.
3Volume of moving object
If axial space is reduced for miniaturization, then device compactness is improved, but electrical connectivity may be compromised
Solution Approach 1:
The patent compensates for reduced axial space by utilizing the radial dimension. Contacts are positioned at different radial positions within the same axial plane, allowing multiple electrical connections to be established without requiring additional axial length. This maintains electrical connectivity while achieving device compactness.
Solution Approach 2:
The nested configuration allows contact groups to share axial space by positioning them concentrically. This enables the assembly to maintain adequate electrical connectivity with sufficient contact pressure and alignment while occupying a reduced axial volume, thereby achieving both compactness and reliability.
Data Source
AI summary
The present invention discloses a rotary electrical connection assembly. The rotary electrical connection assembly includes: a fixed part disposed fixedly and a rotating part disposed rotatably relative to the fixed part. The rotating part is provided with at least two rotary contacts. In the rotary electrical connection assembly provided in the present invention, provided that more groups of the rotary contacts and the fixed contacts are disposed, at least some of the contacts may be disposed at different radial positions corresponding to the same axial position without additionally occupying an axial dimension space, and therefore the increase of an axial dimension of a device may be avoided, and miniaturization of the device is facilitated.