Rolling Bearing Sensor Cable Duct Segmentation
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Solution Overview
Problem
The process of drawing output cables from the sensor housing of a rolling bearing with a rotation sensor through a tubular duct is laborious and prone to damage.
Innovation Solution
A method involving a tubular duct with an opening extending from the proximal to the distal end on its side face, allowing the output cables to be easily inserted and a lid to be mounted for closure, preventing damage and simplifying the extraction process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If output cables are drawn through a tubular duct in a conventional sensor housing, then the cables are protected from damage, but the drawing process becomes laborious and time-consuming
Solution Approach 1:
The tubular duct is segmented by introducing an opening that divides the cable extraction path into two separate entrances (proximal end and distal end). This segmentation allows cables to be introduced more easily through the opening while still maintaining protection through the complete tubular duct structure, thereby reducing extraction difficulty without compromising cable protection.
Solution Approach 2:
The opening in the tubular duct performs a preliminary action by providing a pre-prepared access point for cable introduction. Instead of requiring cables to be forced through the entire duct length from one end, the opening allows cables to be preliminarily inserted through a convenient access point, significantly easing the extraction process while maintaining the protective enclosure.
2Reliability
If output cables are drawn through a tubular duct, then the cables are protected from damage, but the process becomes prone to cable damage due to laborious manipulation
Solution Approach 1:
By segmenting the duct with an opening, the cable introduction process is divided into manageable steps: insertion through the opening rather than forcing through the entire duct. This reduces manipulation complexity and the associated risk of cable damage while maintaining the protective function of the complete duct structure.
Solution Approach 2:
The opening provides a preliminary access point that allows cables to be gently inserted without the need for forceful manipulation through the entire duct length. This preliminary action through the opening significantly reduces the risk of cable damage during the extraction process.
3Reliability
If the tubular duct is sealed without an opening, then cable protection is maximized, but cable extraction becomes extremely difficult and laborious
Solution Approach 1:
The duct structure is segmented by adding an opening, transforming it from a completely sealed tube into a structure with accessible entry/exit points. This segmentation maintains the protective enclosure function while enabling easy cable extraction through the opening, significantly improving operational ease.
Solution Approach 2:
The opening acts as an intermediary element between the sealed duct structure and the cable extraction operation. It provides a mediating access point that allows cables to be easily introduced and removed without compromising the overall protective function of the duct, thus resolving the contradiction between sealing and ease of operation.
Data Source
Figure 1
Figure 2
Figure 3(a)~3(b)
AI summary
The object is to protect the output cables of the magnetic sensor from damages and, at the same time, to make the process of drawing out the output cables easier. A tubular duct 9a for output cables 12 is formed integrally with a sensor housing 9, provided with an opening 14 having a uniform width from the proximal end to the distal end of the duct 9a on the side face thereof. The output cables 12 are put through the duct 9a from this opening 14, and then a slidable lid 15 is mounted to close the opening 14. Thus damage to the output cables 12 connected to a magnetic sensor 7 is prevented and, at the same time, drawing the output cables 12 outside the sensor housing 9 is made easier.