Continuity Test Device Pneumatic Timing Control
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Solution Overview
Problem
Conventional continuity test devices face operational failures and increased costs due to manual or sequential mechanical operations for locking connectors, requiring precise timing adjustments, which can lead to incomplete lock actuations and probe pin extrusions, resulting in test failures.
Innovation Solution
An operation control structure for a continuity test device using two air cylinders with the same air pressure, where a speed control valve with a fine hole in the second cylinder allows timely locking of the connector and actuation of the continuity test part, eliminating the need for frequent adjustments and reducing parts costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual or sequential mechanical operation is used for locking connector and actuating continuity test part, then device complexity is reduced, but operation reliability deteriorates due to operational failures and timing issues
Solution Approach 1:
The patent applies pneumatic actuators (cylinders) to replace manual or mechanical sequential operations. The first cylinder locks the connector while the second cylinder actuates the continuity test part, both controlled by air pressure supply. This pneumatic system eliminates operational failures associated with manual operation while maintaining relatively simple device structure through the use of standard pneumatic components.
2Manufacturing precision
If timing control is performed using commercially available speed controller, then operation timing precision is improved, but parts cost increases and adjustment time increases
Solution Approach 1:
The patent applies local quality by providing different hole diameters in the air supply passage: a first hole for the first cylinder and a second hole (with fine hole) for the second cylinder. This creates different air flow characteristics locally, causing the first cylinder to operate earlier than the second cylinder without requiring external timing controllers. The timing precision is achieved through the structural design of the air passage itself rather than through complex control systems.
3Measurement precision
If connector locking is performed before continuity test part actuation, then test accuracy is improved, but operation timing control becomes more difficult
Solution Approach 1:
The patent implements preliminary action by designing the air supply system so that the first cylinder (connector locking) operates before the second cylinder (continuity test part actuation). The different hole diameters in the air passage cause the first cylinder to receive sufficient air pressure first, ensuring connector locking is completed before the continuity test part is actuated. This eliminates the risk of probe pin extrusion while maintaining ease of operation through automatic timing control.
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
This solution enables timely and reliable locking and actuation of the continuity test part, reducing man-hour costs and ensuring smooth, rapid continuity testing without the need for frequent setup or replacement of speed control components.
Implementation Method 1
a fine hole much thinner than a hole in a plug of the first cylinder being provided in the speed control valve
Data Source
AI summary
There is provided an operation control structure for a continuity test device for performing lock of a connector and actuation of a continuity test part timely, low cost, easily, and surely including a connector attachment part 3, a continuity test part 4 having a probe pin 12, a first cylinder 16 for locking a connector 10 in the connector attachment part, a second cylinder 15 for moving the continuity test part to the connector attachment part, wherein plugs 30 and 54 of the first cylinder and the second cylinder respectively are supplied with the same pressured air, a speed control valve 26 being provided within a plug 30 of the second cylinder 15, a fine hole 28 thinner than a hole 56 in a plug 54 of the first cylinder being provided in the speed control valve, and wherein the continuity test part is actuated by the second cylinder through the fine hole following lock of the connector by the first cylinder. A hole 37 for air discharge is provided in the speed control valve 26 is connected to a hole 31 of the plug via a gap 38 between the outer circumference of the speed control valve and the inner circumference of the plug 30 of the second cylinder 15, and wherein a test valve 36 is provided in the gap.