Rotating Camera Wiring Layout for Compact Cable Stress Relief
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Solution Overview
Problem
Existing multi-purpose cameras with rotation drive devices face challenges in reducing stress on wires and connections, which hinders downsizing and increases the projected installation area.
Innovation Solution
The electronic apparatus incorporates a movable cylinder and a support cylinder with a flexible wire bundle that includes fixed parts on both cylinders, allowing the wire bundle to be stored in a compact area and follow rotational movements without excessive stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible cable is used to connect the rotation unit to the fixed unit, then the cable can follow the motion of the movable part, but the cable becomes slack and increases the projected area
Solution Approach 1:
The cable is divided into multiple segments with fixed parts at both ends and a flexible intermediate part. This segmentation allows the cable to maintain fixed connection points while accommodating rotational movement through the flexible intermediate section, reducing the projected area compared to a completely slack cable.
Solution Approach 2:
The cable is routed through a storage area that utilizes three-dimensional space within the housing. By arranging the cable in a compact three-dimensional path rather than allowing it to extend radially in two dimensions, the projected installation area is significantly reduced while still accommodating the necessary cable flexibility.
2Reliability
If the cable is made more slack to reduce stress on cable connection parts, then connection reliability improves, but the apparatus size increases
Solution Approach 1:
The cable connection system is segmented into fixed parts at both ends and a flexible intermediate part. This segmentation concentrates the stress-absorbing function in the flexible intermediate section while keeping the connection parts compact, thereby maintaining connection reliability without increasing overall apparatus volume.
Solution Approach 2:
The flexible intermediate cable is nested within a storage area that is integrated into the housing structure. This nesting arrangement allows the cable to have sufficient length and flexibility for reliable connections while being contained within the existing housing volume, preventing apparatus size increase.
3Adaptability or versatility
If the cable is radially slackened to accommodate movement, then motion flexibility is improved, but the projected area increases
Solution Approach 1:
Instead of allowing the cable to slacken radially in a two-dimensional plane, the cable is routed through a three-dimensional storage area within the housing. This dimensional change allows the cable to accommodate rotational movement while maintaining a compact projected area, as the cable utilizes vertical and depth dimensions rather than extending outward radially.
Solution Approach 2:
The cable is segmented into fixed parts and a flexible intermediate part that is specifically designed to accommodate rotational movement. This segmentation allows motion flexibility to be concentrated in the flexible intermediate section while the fixed parts maintain compact connections, reducing the overall projected installation area.
Data Source
AI summary
An electronic apparatus includes a movable cylinder, a support cylinder configured to support the movable cylinder rotatably around a panning rotation axis, a flexible wire connecting to a panning control circuit board in the support cylinder, and a storage area communicating with the movable cylinder and the support cylinder and containing the flexible wire. The flexile wire includes a first fixed part on the movable cylinder and a second fixed part on the support cylinder. In the storage area, the first fixed part is fixed to a first fixing part of the movable cylinder. In the storage area, the second fixed part is fixed to a second fixing part of the support cylinder.