Hollow Axis Encoder Slip Ring Nesting for Cable Twisting
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Solution Overview
Problem
Existing surveillance apparatuses with rotation assemblies face challenges in accurately measuring and controlling the rotation movement of the camera, leading to inefficiencies in surveillance operations.
Innovation Solution
A rotation assembly comprising a base unit, a rotation frame unit, a rotation driving unit, an encoder, and a slip ring, where the encoder's hollow axis coincides with the rotation axis, allowing precise measurement and control of rotation movements while preventing cable twisting, thereby enhancing the precision and efficiency of the rotation assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional encoder structure is used in the rotation assembly, then the rotation measurement function is provided, but the cable twisting problem occurs and measurement accuracy deteriorates
Solution Approach 1:
The slip ring is disposed inside the hollow axis of the encoder, utilizing the internal space of the encoder structure. This nesting arrangement allows the slip ring to be integrated within the encoder's through-hole, preventing cable twisting while maintaining rotation measurement functionality without requiring additional external space.
Solution Approach 2:
The invention transitions from a conventional external encoder structure to a configuration where the encoder's hollow axis provides a three-dimensional space for accommodating the slip ring. By utilizing the vertical dimension through the hollow axis, the design resolves the cable twisting issue while preserving measurement precision.
2Ease of manufacture
If separate components are used for encoder and slip ring, then each component can be optimized independently, but the overall assembly volume increases and assembling efficiency decreases
Solution Approach 1:
The slip ring and encoder are merged into a single integrated structure where the slip ring is disposed within the hollow axis of the encoder. This combination reduces the total assembly volume by eliminating separate mounting spaces and simplifies the assembly process by reducing the number of discrete components that need to be installed.
Solution Approach 2:
By nesting the slip ring inside the encoder's hollow axis, the design achieves compact integration. The internal space of the encoder is utilized to house the slip ring, thereby reducing the overall footprint of the rotation assembly while maintaining the functional independence of both components.
3Strength
If the encoder axis is solid rather than hollow, then structural strength is improved, but the slip ring cannot be accommodated and cable twisting occurs
Solution Approach 1:
The hollow axis structure allows the slip ring to be nested within the encoder, providing a pathway for cables that prevents twisting during rotation. This design maintains sufficient structural strength while enabling the slip ring integration necessary for accurate rotation measurement and cable management.
Solution Approach 2:
By creating a hollow interior space within the encoder axis, the design adds a third-dimensional pathway for cable routing. This dimensional change allows the slip ring to rotate without twisting cables, while the outer structure of the axis maintains its strength for mechanical support.
Data Source
AI summary
Provided a rotation assembly including: a base unit; a rotation frame unit rotatably installed on the base unit; a rotation driving unit which drives the rotation unit to rotate; an encoder including a hollow axis installed on the base unit and an encoder main body installed on the rotation frame unit; and a slip ring installed on the base unit, wherein a portion of the slip ring or a portion of a cable connected to the slip ring is disposed in a through hole provided in the hollow axis.