Movement Guide Sensor Housing With Integrated Cable Bushing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional sensors attached to movement guide devices restrict the stroke of the moving member due to their size, making it difficult to downsize the housing while ensuring electrical connectivity and insulation.
Innovation Solution
A sensor design featuring a housing with a conduction hole in the cable bushing that allows electrical connection between the housing and shielded cable, reducing the overall length and enabling downsizing by using a separable body with a cable bushing and conduction parts for secure and insulated connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional sensor structure with cable bushing and insulating area is used, then electrical connectivity and insulation are ensured, but the housing length increases making downsizing difficult
Solution Approach 1:
The cable bushing is integrated directly into the housing structure, merging the cable bushing and housing into a single unified component. This eliminates the need for a separate insulating area between the cable bushing and sensor substrate, as the integrated design provides both mechanical support and electrical insulation through its structural configuration, thereby reducing the overall housing length while maintaining electrical connectivity and insulation requirements
Solution Approach 2:
The cable bushing is positioned and embedded within the housing structure in a nested arrangement, where the cable bushing fits into a dedicated cavity or recess in the housing. This nested configuration allows the cable bushing to be surrounded by the housing material that provides electrical insulation, eliminating the need for additional insulating areas and reducing the overall length of the housing in the longitudinal direction
2Length of moving object
If the sensor size is reduced to ensure moving member stroke, then stroke is preserved, but electrical connectivity and insulation become difficult to maintain
Solution Approach 1:
The cable bushing is merged with the housing structure, creating a compact integrated assembly where the cable bushing and housing form a unified component. This integration eliminates the need for separate insulating structures and reduces the overall sensor length while maintaining proper electrical connectivity and insulation through the integrated design configuration
Solution Approach 2:
The design transitions from a linear arrangement where the cable bushing, insulating area, and sensor substrate are arranged sequentially in the longitudinal direction to a more compact three-dimensional configuration. The cable bushing is positioned within the housing structure in a way that utilizes vertical or lateral space rather than extending the longitudinal length, thereby maintaining electrical connectivity and insulation while reducing the sensor's length in the longitudinal direction
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for a reduced length of the housing in the longitudinal direction, enabling the sensor to be downsized without compromising electrical connectivity or insulation, thus preserving the stroke of the moving member.
Implementation Method 1
The cable bushing has a conduction hole that allows the housing and the shielded cable to be electrically connected to each other
Data Source
AI summary
To provide a sensor that can be downsized in order to ensure a stroke of a moving member when the sensor is mounted on a track member, and a movement guide device including the sensor. A sensor that is attached to a movement guide device having a track member extending in a longitudinal direction and a moving member attached to the track member in such a manner that the moving member is movable in the longitudinal direction includes: a housing that houses a sensor substrate; a shielded cable connected to the sensor substrate; and a cable bushing that holds and secures the shielded cable to the housing. The cable bushing has a conduction hole that allows the housing and the shielded cable to be electrically connected to each other, and the housing has a conduction part that can be inserted into the conduction hole.