Input Output Device Production Method Preventing Dust Ingress
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing production methods for input/output devices in process control systems face challenges such as increased work costs and reduced efficiency due to the exposure of electronic devices to external environments during connection processes, which can lead to failures from dust and sand ingress, and require additional dustproof measures.
Innovation Solution
A production method that involves connecting cables to a terminal block housed within the casing, attaching electronic devices with a connector portion, and then attaching the terminal block to the connector portion, all while keeping the casing closed, thereby preventing external exposure and eliminating the need for dustproof devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If electronic devices are attached to the casing main body before cable connection, then the production process can be simplified, but electronic devices are exposed to external environments and may fail due to dust and sand ingress
Solution Approach 1:
The terminal block is preliminarily attached to the casing main body before the electronic device is installed. This allows cable connections to be made to the terminal block while it is protected inside the casing, preventing dust and sand ingress. The electronic device is then attached later, completing the assembly without exposing sensitive components to the external environment during the cable connection process.
Solution Approach 2:
The assembly process is segmented into distinct stages: first attaching the terminal block to the casing main body, then connecting cables to the terminal block, and finally attaching the electronic device. This segmentation allows each component to be positioned and connected in an optimal sequence that protects sensitive electronics while maintaining production efficiency.
2Reliability
If dustproof devices are added to protect electronic devices, then reliability improves, but work costs increase and efficiency decreases
Solution Approach 1:
The terminal block is attached to the casing main body before the electronic device is installed, creating a protected workspace inside the casing. This preliminary action eliminates the need for additional dustproof devices because the terminal block serves as both a functional component and a protective structure during the cable connection process.
3Reliability
If cables are connected after the casing is closed, then environmental protection is maintained, but access to terminal blocks becomes difficult
Solution Approach 1:
The terminal block is preliminarily attached to the casing main body in a state where it is accessible from the outside through the opening portion. This allows cable connections to be made easily while the terminal block remains protected inside the casing. The opening/closing member is kept open during this preliminary connection phase, providing easy access without requiring the casing to be fully disassembled.
Data Source
AI summary
A production method of an input/output device is provided, including a cable connecting step of connecting a cable to be connected to a field device disposed outside a casing main body to a terminal block in a state where the terminal block is housed in the casing main body having an opening portion, an electronic device attaching step of attaching an electronic device to the casing main body by housing the electronic device having a connector portion, which the terminal block can be attached to and detached from, in the casing main body through the opening portion, a terminal block attaching step of attaching the terminal block to the connector portion, and a closing step of closing the opening portion of the casing main body by an opening/closing member.