Extension Cable Rotary Coupling for Pipe Processing Devices
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Solution Overview
Problem
Pipe processing devices face issues with electrical cable damage and incompatibility with different power sockets across countries, requiring multiple device variants and complicating cable replacement, which is often unsafe for non-electricians to perform.
Innovation Solution
A flexible electrical extension cable system with a universal cable plug and coupling design that allows for easy adaptation to various power sockets, enabling a single device to work across countries and allowing for cable replacement without opening the device, using a rotary coupling and locking mechanism for secure connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the cable is made replaceable without opening the device, then ease of repair is improved, but device complexity increases due to the cable coupling mechanism
Solution Approach 1:
The cable coupling mechanism is extracted as a separate, self-contained component that can be independently replaced. The cable is completely separable from the pipe processing device through the cable coupling, allowing the cable to be removed and replaced without disassembling the main device structure. This resolves the contradiction by making repair easy while keeping the added complexity isolated to a small, replaceable component rather than the entire device.
Solution Approach 2:
The electrical connection system is segmented into distinct modules: the cable, the cable coupling with locking mechanism, and the device interface. This segmentation allows the cable to be independently replaced by simply disconnecting it from the cable coupling, which remains attached to the device. The locking mechanism ensures secure connection during operation but allows quick release for replacement, balancing ease of repair with connection reliability.
2Adaptability or versatility
If a universal cable plug design is used, then adaptability to different countries is improved, but compatibility with local sockets may be reduced
Solution Approach 1:
The cable coupling is designed as a universal interface that can accept various cable plug types from different countries. Instead of hardcoding the device to work with one specific plug type, the cable coupling provides a standardized connection point that accommodates multiple international plug standards. This allows the same pipe processing device to be used worldwide by simply replacing the cable (and its attached plug) with one suitable for the local electrical standard, maintaining both adaptability and connection reliability.
3Ease of operation
If the cable is made more flexible for easy handling, then ease of operation is improved, but susceptibility to damage increases
Solution Approach 1:
The cable is provided with sufficient length and appropriate flexibility to allow easy handling and positioning of the pipe processing device during operation. The cable coupling incorporates a locking mechanism that secures the cable connection before operation begins, preventing accidental disconnection or damage during use. This beforehand preparation allows the cable to be flexible enough for easy operation while protecting it from damage through proper securing and adequate length to avoid excessive bending or pulling.
Data Source
Figure 1~4
Figure 2
Figure 5
AI summary
The invention relates to a flexible electrical extension cable (2) and a pipe processing device (40) adapted thereto. The extension cable (2) is divided into two cable pieces (2-1, 2-2) by a rotational coupling (4). The front end of the front cable piece (2-1) has a cable plug (6) that is embodied as a mains plug for plugging into a socket of a public electricity grid. A cable coupling (8) having a structure that is not compatible with the cable plug (6) is connected to the rear of the rear cable piece (2-2) such that said cable coupling may not be coupled to said cable plug. The cable coupling (8) is adapted to a cable plug (20) of the pipe processing device (40) or to an electrical plug (108) attached to the pipe processing device (40) in a fixed manner such that said cable coupling may be coupled with said plug.