Position Detecting Device With Segmented Sensor Portions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing position detecting devices with two magnetic sensors face challenges in maintaining consistent output characteristics due to variations in resin molding processes, and devices with one magnetic sensor cannot function as intended with two sensors, leading to increased costs and design complexities.
Innovation Solution
A position detecting device design featuring two independent sensor portions with identical configurations, where each portion includes a magnetic sensor, wiring, and a mold resin object, with a protrusion part to maintain clearance between sensors, allowing for the production of devices with one or two magnetic sensors using common parts, reducing costs and minimizing stress-induced variations in output characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If two magnetic sensors are molded together with resin material to an attachment object, then the position detecting device can detect position accurately, but the output characteristics of the magnetic sensors vary and fluctuate due to resin molding stress
Solution Approach 1:
The invention divides the sensor mounting structure into separate sensor portions that are not molded together as a single integrated component. Each magnetic sensor is mounted in its own separate portion, eliminating the resin molding stress that causes output characteristic variations while maintaining the ability to detect position accurately through the relative positioning of the sensors.
2Adaptability or versatility
If a position detecting device is designed with two magnetic sensors, then detection functionality is improved, but design and manufacturing costs increase
Solution Approach 1:
The invention creates a universal sensor portion design that can be used with either one or two magnetic sensors. The same basic sensor portion structure serves multiple functions: it can accommodate a single sensor for simplified applications or two sensors for enhanced detection capability, thereby reducing design and manufacturing complexity while maintaining versatility.
3Volume of moving object
If magnetic sensors are mounted close to each other to reduce device size, then compactness is achieved, but stress from resin molding affects sensor output characteristics
Solution Approach 1:
The invention segments the sensor mounting areas into separate portions that are positioned close together for compactness, but are not molded together as a single integrated component. This segmentation allows the sensors to be mounted in close proximity to minimize device size while eliminating the resin molding stress that would otherwise affect sensor output characteristics.
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 design enables the production of position detecting devices with consistent output characteristics, reduced costs, and improved accuracy by using common parts for both single and dual magnetic sensor configurations, while preventing stress-induced fluctuations in sensor outputs.
Implementation Method 1
a noncontact type device that detects a rotation angle of a shaft based on a change in a magnetic field
Data Source
AI summary
A position detecting device includes a first sensor portion having a first mold resin object molded for a first magnetic sensor and a first wiring and a second sensor portion having a second mold resin object molded for a second magnetic sensor and a second wiring. The first sensor portion and the second sensor portion have a protrusion part defined between the first magnetic sensor of the first sensor portion and the second magnetic sensor of the second sensor portion to provide a clearance between the first magnetic sensor and the second magnetic sensor.