A port mis-insertion protection test fixture

Abstract

This utility model relates to a test fixture for port mis-insertion protection, comprising: a base; a test connector mounted on the base for guiding the port under test to be inserted in a single direction and defining the insertion endpoint position; a trigger structure disposed on the base for being contacted and driven during the insertion of the port under test; a locking structure connected to the trigger structure for entering a locked state after the trigger structure is driven, thus holding the port in the insertion position; and a detection structure linked to the locking structure for outputting a detection signal when the locking structure is in the locked state and not outputting a detection signal when the locking structure is in the unlocked state. The test fixture, through the linkage of the trigger structure, locking structure, and detection structure, ensures that the detection structure only outputs a valid detection signal after the port under test is correctly inserted and locked, thereby avoiding test instability caused by improper port insertion.

Description

Technical Field

[0001] This utility model relates to the field of electronic component testing technology, and in particular to a test fixture for port misinsertion protection. Background Technology

[0002] In the testing of electronic products, test fixtures are typically used to mate with the ports under test to verify electrical performance or functionality. Existing test fixtures often employ guide insertion and limiting structures to assist operators in port mating. However, in practice, due to similar port shapes, uneven insertion force, or insufficient positioning accuracy, incomplete mating often occurs.

[0003] When the port is not fully inserted, the test fixture may still make partial contact with the device under test (DUT), leading to abnormal detection signals, affecting the accuracy of test results, and potentially damaging the DUT. Existing improvements rely on electrical detection circuits or additional sensors to determine the insertion status, but these solutions are not only complex and costly to manufacture, but also cannot achieve passive detection in the absence of power.

[0004] Therefore, there is an urgent need in the existing technology for a port mis-insertion protection test fixture that can effectively solve the problem of test instability caused by improper port insertion through a reasonable mechanical structure. Utility Model Content

[0005] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of this utility model is to provide a test fixture for port mis-insertion protection, comprising: a base; a test connector, mounted on the base, for guiding the port under test to be inserted in a single direction and defining the insertion endpoint position; a trigger structure, disposed on the base, for being contacted and driven by the trigger structure during the insertion of the port under test; a locking structure, connected to the trigger structure, for entering a locked state after the trigger structure is driven, holding the port in the inserted position; and a detection structure, linked to the locking structure, for outputting a detection signal when the locking structure is in the locked state, and not outputting a detection signal when the locking structure is in the unlocked state; wherein, through the linkage of the trigger structure, locking structure, and detection structure, the test fixture ensures that the detection structure only outputs a valid detection signal after the port under test is correctly inserted and locked, thereby avoiding test instability caused by improper port insertion.

[0006] In one possible implementation, the test connector includes: a guide, fixedly mounted on the base and located on one side of the test connector, for guiding the port to be inserted in a predetermined direction; and a limiting member, disposed at one end of the guide, for limiting the insertion depth of the port, so that the port contacts the limiting member and stops when inserted to a preset position.

[0007] In one possible implementation, the triggering structure includes: a guide channel disposed on the base and extending along the port insertion direction to define the sliding path of the movable member; a movable member slidably disposed within the guide channel, located between the test connector and the limiting member, with one end facing the port insertion direction, and when the port is inserted to a predetermined depth, its front end face contacts the movable member and pushes the movable member to slide along the guide channel; a fixing member fixedly disposed on the base at the sliding termination position of the guide channel; a first contact point disposed on the front end face of the movable member; and a second contact point disposed on the fixing member, corresponding to the position of the first contact point; the first contact point and the second contact point are respectively electrically connected to the detection structure; wherein, when the movable member slides to the termination position of the guide channel under the push of the port, the first contact point and the second contact point contact each other to form a conductive circuit, triggering the detection structure to output a detection signal.

[0008] In one possible implementation, a reset member is provided between the movable member and the base, the reset member being used to apply force to the movable member after the port is pulled out, causing it to slide back to its initial position along the guide channel, so that the first contact and the second contact are disconnected.

[0009] In one possible implementation, the locking structure includes: a first permanent magnet fixedly disposed on the movable member; and a second permanent magnet fixedly disposed on the fixed member, the position of which corresponds to the end point of the guide channel; wherein, when the movable member slides to the end point position under the push of the port and the first contact point contacts the second contact point, the first permanent magnet and the second permanent magnet face each other and attract each other, thereby holding the movable member at the end point position and achieving locking and holding of the port.

[0010] In one possible implementation, the reset element is an electric push rod, which is installed in the base and connected to the moving element. The electric push rod is used to receive a control signal and drive the moving element to slide back to the initial position along the guide channel when the port is not pulled out, so as to release the contact between the first contact and the second contact.

[0011] In one possible implementation, the electric actuator is controlled by an electric button disposed on the base, the electric button being used to send a drive signal to the electric actuator when pressed, so as to drive the moving part to slide back to the initial position.

[0012] In one possible implementation, the detection structure includes a signal output port for outputting an electrical detection signal when the first contact and the second contact are in contact and connected, so as to allow external testing equipment to identify the port insertion status.

[0013] In one possible implementation, the first contact and the second contact are resilient contact structures, used to provide a stable electrical connection during contact and to counteract the effect of insertion force fluctuations on contact stability.

[0014] Based on the above technical solution, this utility model provides a port mis-insertion protection test fixture. Through the coordinated operation of a base, test connector, trigger structure, locking structure, and detection structure, it achieves accurate judgment and protection of the insertion state of the port under test. Specifically, when the port under test is inserted into the test fixture, the test connector first guides the port to be inserted correctly in a single direction and limits its final insertion position. During the port insertion process, it contacts and drives the trigger structure. After the trigger structure is driven, it will activate the locking structure to enter the locking state, firmly holding the port in the correct insertion position and preventing loosening or detachment due to improper insertion. At the same time, the detection structure is linked with the locking structure. The detection structure will only output a valid detection signal when the locking structure is in the locked state (i.e., the port has been correctly inserted and locked). Therefore, the test fixture will only issue a "ready" signal after the port is completely and correctly inserted and locked, thereby avoiding the instability and misjudgment problems caused by testing when the port is not fully in place. This solves the technical problem of unstable test results caused by uncertain port insertion state in traditional testing, significantly improving test efficiency and data accuracy. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of the port mis-insertion protection test fixture provided in this embodiment of the utility model; Figure 2 for Figure 1 Internal structure diagram; Figure 3 for Figure 2 Enlarged view of the middle section.

[0017] Explanation of reference numerals in the attached figures: 100. Base; 200. Test connector; 210. Guide component; 220. Limiting component; 300. Triggering structure; 310. Guide channel; 320. Moving component; 330. Fixing component; 340. First contact; 350. Second contact; 360. Reset component; 370. Electric button; 400. Locking structure; 410. First permanent magnet; 420. Second permanent magnet; 500. Detection structure; 510. Signal output port. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] Figure 1 A schematic diagram of the structure of the port mis-insertion protection test fixture provided in this embodiment of the utility model; Figure 2 for Figure 1 Internal structure diagram; Figure 3 for Figure 2 Enlarged view of the middle section.

[0023] Please see Figure 1-3 In one possible implementation, the port mis-insertion protection test fixture includes: a base 100; a test connector 200, mounted on the base 100, for guiding the port under test to be inserted in a single direction and defining the insertion endpoint position; a trigger structure 300, disposed on the base 100, for being contacted and driven during the insertion of the port under test; a locking structure 400, connected to the trigger structure 300, for entering a locked state after the trigger structure 300 is driven, keeping the port in the inserted position; and a detection structure 500, linked to the locking structure 400, for outputting a detection signal when the locking structure 400 is in the locked state, and not outputting a detection signal when the locking structure 400 is in the unlocked state. The test fixture, through the linkage of the trigger structure 300, the locking structure 400, and the detection structure 500, ensures that the detection structure 500 only outputs a valid detection signal after the port under test is correctly inserted and locked, thus avoiding test instability caused by improper port insertion.

[0024] Existing test fixtures often suffer from abnormal test signals due to improper port insertion, affecting the accuracy of test results and even damaging the equipment. Traditional solutions, such as electrical detection circuits or additional sensors, have limitations such as complex structure, high cost, and inability to test without power. The purpose of this invention is to solve the problem of improper port insertion through a mechanical structure, ensuring stable testing. Specifically, the coordinated action of the trigger structure 300, locking structure 400, and detection structure 500 achieves accurate judgment of the port insertion status. When the port under test is correctly inserted and drives the trigger structure 300, the locking structure 400 immediately enters the locking state, fixing the port. At this time, the detection structure 500 outputs a valid signal, indicating that the port is correctly connected. If the port is not fully inserted or not locked, no valid signal will be output, thus avoiding test instability caused by misinsertion. This design achieves precise control using simple mechanical actions, avoiding complex circuits and high-cost sensors, and improving reliability and applicability.

[0025] Specifically, the base 100 serves as the support structure for the entire fixture, upon which all components are mounted, ensuring the fixture's stability and integration. The test connector 200 is mounted on the base 100 and is used to guide the port under test into the predetermined direction, precisely defining the final insertion position of the port to prevent over-insertion or misalignment. The trigger structure 300 is located on the base 100 and is contacted and driven by the port during insertion, serving as the initial signal for the port to be fully inserted. The locking structure 400 is mechanically connected to the trigger structure 300. When the trigger structure 300 is activated, the locking structure 400 immediately enters a locked state, firmly holding the port in the fully inserted position to prevent it from loosening or falling off during testing. The detection structure 500 and the locking structure 400 are linked and can output a detection signal according to the status of the locking structure 400: when the locking structure 400 is in the locked state, the detection structure 500 outputs a valid signal, indicating that the port has been correctly inserted and locked; when the locking structure 400 is in the unlocked state, the detection structure 500 does not output a signal, indicating that the port is not fully inserted or not locked.

[0026] Furthermore, through the linkage of the trigger structure 300, locking structure 400, and detection structure 500, accurate judgment of the port insertion status is achieved, effectively avoiding test instability caused by improper port insertion and greatly improving the accuracy and reliability of test results. Secondly, this fixture uses a mechanical structure for misinsertion protection. Compared to existing solutions that rely on electrical detection circuits or additional sensors, its structure is simpler, its manufacturing cost is lower, and it can achieve passive detection even in the absence of power, broadening its applicability. In addition, the locking structure 400 firmly holds the port under test in the insertion position, preventing accidental loosening or detachment during testing, further ensuring the stability and safety of the testing process and reducing potential damage to the device under test. This fixture is easy to operate, improves testing efficiency, reduces the risk of operator error, and has good practicality and market competitiveness.

[0027] In the above embodiments, the base 100 can be made of high-strength aluminum alloy or engineering plastic to balance lightweight and structural stability. The test connector 200 can be designed as a replaceable module to adapt to different types and specifications of test ports, enhancing the versatility of the fixture. The triggering structure 300 can adopt various mechanical triggering forms, such as lever mechanisms, cam mechanisms, or push rod mechanisms, to ensure reliable operation when the port is inserted. In addition to mechanical locking, the locking structure 400 can also consider magnetic locking or pneumatic locking to provide faster or stronger locking force. In addition to outputting electrical signals, the detection structure 500 can also integrate optical or acoustic sensors to provide various forms of insertion status feedback, such as prompts via LED indicators or buzzers. Furthermore, to improve the automation level of the fixture, microswitches or proximity sensors can be introduced into the triggering structure 300 and locking structure 400 to transmit their status signals to the host computer, realizing automated test process control. Anti-slip pads or fixing holes can be added to the bottom of the base 100 to ensure the stability of the fixture on the test platform. The guide surface of the test connector 200 can be designed in a tapered or arc shape to further optimize the insertion guidance of the port.

[0028] Please see Figure 1-3 In one possible implementation, the test connector 200 includes: a guide 210, which is fixedly mounted on the base 100 and located on one side of the test connector 200, for guiding the port to be inserted in a predetermined direction; and a limiting member 220, which is disposed at one end of the guide 210, for limiting the insertion depth of the port, so that the port contacts the limiting member 220 and stops when inserted to a preset position.

[0029] This invention ensures that the port is inserted in the correct direction and depth through the coordinated action of the guide member 210 and the limiting member 220. The test connector 200 achieves precise control over the insertion process of the port under test through the cooperation of the guide member 210 and the limiting member 220. The guide member 210 provides directional guidance at the initial stage of port insertion, ensuring that the port enters along a predetermined path. As the port continues to be inserted, the limiting member 220 contacts the port at a preset position, preventing further insertion and thus precisely limiting the insertion depth. This design physically guarantees correct port insertion, avoiding misinsertion and overinsertion.

[0030] Specifically, the guide 210 is fixedly mounted on the base 100, located on one side of the test connector 200. This provides precise physical guidance, ensuring that the port under test smoothly enters the test fixture in a unique and predetermined direction, avoiding insertion difficulties or port damage due to incorrect orientation. The guide 210 is typically designed as a slotted or tapered structure that matches the shape of the port under test, facilitating initial alignment and insertion. A limiting member 220 is located at one end of the guide 210 to limit the insertion depth of the port. When the port under test is inserted along the guide 210 and reaches the preset correct insertion depth, the front face or a specific part of the port will contact the limiting member 220, thereby preventing further insertion. This physical limiting mechanism ensures that the port is always inserted into the optimal electrical contact position, avoiding poor contact due to insufficient insertion depth or mechanical stress on the equipment caused by excessive insertion. The coordinated work of the guide 210 and the limiting member 220 constitutes the core function of the test connector 200, providing a reliable guarantee for accurate and stable port insertion.

[0031] Please see Figure 1-3 In one possible implementation, the trigger structure 300 includes: a guide channel 310 disposed on the base 100 and extending along the port insertion direction to define the sliding path of the movable member 320; a movable member 320 slidably disposed within the guide channel 310, located between the test connector 200 and the limiting member 220, with one end facing the port insertion direction, and when the port is inserted to a predetermined depth, its front end face contacts the movable member 320 and pushes the movable member 320 to slide along the guide channel 310; and a fixing member 330 fixedly disposed on the base 100. On the guide channel 310, the first contact 340 is located at the sliding end position; the second contact 350 is located on the fixed member 330, corresponding to the position of the first contact 340; the first contact 340 and the second contact 350 are electrically connected to the detection structure 500 respectively; wherein, when the moving member 320 slides to the end position of the guide channel 310 under the push of the port, the first contact 340 and the second contact 350 come into contact, forming a conductive circuit, triggering the detection structure 500 to output a detection signal.

[0032] Specifically, the trigger structure 300 of this utility model includes a guide channel 310, a movable member 320, a fixing member 330, a first contact 340, and a second contact 350. The guide channel 310 is disposed on the base 100 and extends along the port insertion direction, thereby providing a precise sliding track for the movable member 320, ensuring that the movable member 320 can move smoothly and accurately along a predetermined path. The movable member 320 is slidably disposed within the guide channel 310, located between the test connector 200 and the limiting member 220, with one end facing the port insertion direction. When the port under test is inserted to a predetermined depth, the front end face of the port will precisely contact and push the movable member 320 to slide along the guide channel 310. The fixing member 330 is fixedly disposed on the base 100, located at the sliding termination position of the guide channel 310, serving as a reference for the endpoint of the movable member 320's sliding. The first contact 340 is located on the front end face of the movable member 320, and the second contact 350 is located on the fixed member 330, precisely corresponding to the position of the first contact 340. Both the first contact 340 and the second contact 350 are electrically connected to the detection structure 500. When the movable member 320 slides precisely to the end position of the guide channel 310 under the push of the port, the first contact 340 and the second contact 350 come into contact, forming a conductive circuit. This conductive signal immediately triggers the detection structure 500 to output a detection signal, thereby achieving precise electrical detection of the port being fully inserted.

[0033] Furthermore, through the coordinated action of the moving part 320, the guide channel 310, the first contact 340, and the second contact 350, precise electrical detection of the port being fully inserted is achieved, avoiding errors from traditional manual judgment and greatly improving the accuracy and reliability of the test. Secondly, when the port is not fully inserted, the circuit is not conductive, and the detection structure 500 does not output a signal, effectively preventing misjudgment and eliminating test instability caused by improper port insertion at the source. In addition, the above structural design is relatively simple, easy to manufacture and maintain, and has good durability, capable of withstanding repeated insertion and removal operations. This physical contact-based triggering mechanism provides physical feedback even in the absence of power, enhancing the versatility and robustness of the fixture.

[0034] In the above embodiments, the inner wall of the guide channel 310 can be polished or coated with a low-friction material to reduce the resistance when the moving part 320 slides, ensuring smooth operation. The material of the moving part 320 can be a lightweight, high-strength engineering plastic to reduce inertia and improve response speed. The first contact 340 and the second contact 350 can be made of highly conductive and oxidation-resistant materials such as gold or silver plating to ensure long-term stable electrical contact.

[0035] Please see Figure 1-3In one possible implementation, a reset member 360 is provided between the movable member 320 and the base 100. The reset member 360 is used to apply force to the movable member 320 after the port is pulled out, so that it slides back to the initial position along the guide channel 310, so that the first contact 340 and the second contact 350 are disconnected.

[0036] Specifically, the reset element 360 of this invention is disposed between the movable element 320 and the base 100. The main function of the reset element 360 is to apply a preset restoring force to the movable element 320 after the port under test is removed from the test fixture. This force allows the movable element 320 to slide smoothly along its specific guide channel 310 and automatically return to its initial position. When the movable element 320 returns to its initial position, the contact between the first contact 340 and the second contact 350 caused by the port insertion will be broken. This break ensures that the detection circuit returns to a non-conductive state, thus preparing for the next port insertion test. The reset element 360 can be a spring (such as a compression spring or a tension spring), a pneumatic device, a hydraulic device, or an electric push rod, etc. Its selection and design must ensure that sufficient reset force is provided without affecting the smooth sliding of the movable element 320 during port insertion. Through the integration of the reset element 360, this invention achieves automated reset of the fixture, significantly improving operating efficiency and test reliability.

[0037] Furthermore, the reset component 360 enables the automatic reset of the moving component 320, eliminating the need for manual intervention and greatly improving testing efficiency and ease of operation. Moreover, by ensuring that the first contact 340 and the second contact 350 automatically disconnect after the port is unplugged, erroneous signal output due to failure to reset is avoided, thus ensuring the accuracy and reliability of subsequent tests and preventing misjudgments.

[0038] In the above embodiments, the reset element 360 can take various forms. The most common is a helical compression spring, the size and elastic coefficient of which should be precisely selected based on the mass of the moving element 320 and the required reset force. To ensure the stability of the spring, a guide sleeve can be provided externally. Besides springs, pneumatic or hydraulic cylinders can also be used as the reset element 360, driving the moving element 320 to reset via preset air or hydraulic pressure. This is particularly suitable for scenarios requiring more precise control of reset speed and force. For applications requiring more flexible control, a small electric actuator can also be used as the reset element 360, achieving precise reset of the moving element 320 through a control circuit. The installation position of the reset element 360 should ensure that its force direction is consistent with the sliding direction of the moving element 320 to improve reset efficiency. To extend the service life of the reset element 360, fatigue-resistant materials can be selected, and surface treatment can be performed if necessary to improve corrosion resistance.

[0039] Please see Figure 1-3In one possible implementation, the locking structure 400 includes: a first permanent magnet 410, fixedly disposed on the movable member 320; and a second permanent magnet 420, fixedly disposed on the fixing member 330, with its position corresponding to the end point of the guide channel 310. When the movable member 320 slides to the end point position under the push of the port and the first contact 340 contacts the second contact 350, the first permanent magnet 410 and the second permanent magnet 420 face each other and attract each other, thereby keeping the movable member 320 in the end point position and achieving the locking and holding of the port.

[0040] Specifically, the locking structure 400 of this invention utilizes the magnetic attraction of the first permanent magnet 410 and the second permanent magnet 420 to precisely lock the moving part 320, thereby maintaining the port in a fully inserted state. When the port being tested pushes the moving part 320 to the end position of the guide channel 310, the first contact 340 contacts the second contact 350. Simultaneously, the first permanent magnet 410 fixed on the moving part 320 and the second permanent magnet 420 fixed on the fixing part 330 are directly opposite each other. At this time, the strong magnetic attraction between the two permanent magnets 410 and 420 firmly attracts the moving part 320 to the end position, thereby effectively keeping the port in a fully inserted and locked state.

[0041] The locking structure 400 of this invention includes a first permanent magnet 410 and a second permanent magnet 420. The first permanent magnet 410 is fixedly mounted on the movable member 320 and slides together with the movable member 320. The second permanent magnet 420 is fixedly mounted on the fixed member 330, and its position precisely corresponds to the end point of the guide channel 310. The above structure ensures that when the movable member 320 slides to its preset end position, the two permanent magnets 410 and 420 can be precisely aligned and magnetically attracted. When the port under test pushes the movable member 320 to slide along the guide channel 310 until it reaches the end position, the first contact 340 and the second contact 350 come into contact, forming a conductive circuit. At the same time, the first permanent magnet 410 and the second permanent magnet 420 are exactly facing each other and attract each other due to the attraction of opposite poles. This magnetic attraction firmly holds the movable member 320 in the end position, thereby achieving the locking and retention of the port under test. This locking mechanism is contactless, avoiding mechanical wear and providing a stable holding force, ensuring the connection stability of the port during testing.

[0042] Furthermore, the magnetic attraction between the first permanent magnet 410 and the second permanent magnet 420 securely locks the moving part 320, ensuring that the tested port remains fully inserted and locked throughout the testing process. This effectively prevents loosening or detachment caused by fluctuations in insertion / extraction force, vibration, or accidental contact, significantly improving the stability and reliability of the test. Secondly, compared to traditional mechanical latches, the permanent magnet locking mechanism is non-contact, avoiding mechanical wear and jamming issues, extending the fixture's lifespan, and reducing maintenance costs. In addition, magnetic locking features rapid response and easy release, improving operational efficiency. This locking method can also provide holding force in the absence of power, increasing the fixture's applicability and robustness.

[0043] In the above embodiments, the first permanent magnet 410 and the second permanent magnet 420 can be neodymium iron boron permanent magnets to obtain higher magnetic field strength and attraction force. The permanent magnets 410 and 420 can be designed in cylindrical, square, or ring shapes to adapt to different space constraints and magnetic force requirements. To ensure the reliability of magnetic attraction, the magnetic pole directions of the permanent magnets 410 and 420 should be correctly configured, typically with opposite poles facing each other. In some scenarios where the locking force needs to be adjusted, magnetic materials with adjustable magnetic flux can be considered, or the attraction force can be fine-tuned by changing the spacing between the permanent magnets.

[0044] Please see Figure 1-3 In one possible implementation, the reset member 360 is an electric push rod, which is installed in the base 100 and connected to the moving member 320. It is used to receive control signals and drive the moving member 320 to slide back to the initial position along the guide channel 310 when the port is not unplugged, so as to release the contact between the first contact 340 and the second contact 350.

[0045] The moving part 320 is controlled and reset by using an electric push rod as a reset element 360, improving operational flexibility and automation. The reset element 360 of this invention is an electric push rod, which is installed within the base 100 and mechanically connected to the moving part 320. When an external control signal is received, the electric push rod precisely drives the moving part 320 to slide along the guide channel 310 to its initial position. Even if the port under test is still inserted, the electric push rod can overcome the holding force of the locking structure 400 (such as the attraction force of a permanent magnet), forcing the moving part 320 to reset. When the moving part 320 returns to its initial position, the contact between the first contact 340 and the second contact 350 immediately breaks, thereby releasing the conductive circuit. This electric reset mechanism allows unlocking via electrical signals without removing the port, greatly improving the automation and intelligence level of the test fixture, and is suitable for complex testing processes requiring remote control or programmed operation.

[0046] An electric actuator is installed inside the base 100 and mechanically connected to the moving part 320. The main function of the electric actuator is to receive external control signals while the port under test is still inserted (i.e., not yet removed). Once a control signal is received, the electric actuator precisely drives the moving part 320, causing it to slide along the guide channel 310 and forcing it back to its initial position. During this process, the electric actuator needs to overcome the holding force of the locking structure 400 (e.g., the attraction force of a permanent magnet) on the moving part 320. When the moving part 320 successfully returns to its initial position, the contact between the first contact 340 and the second contact 350, previously caused by port insertion, is immediately broken, thus releasing the conductive circuit. This design allows the fixture to achieve the release of the locking state and the reset of the trigger circuit through electrical control without physically removing the port, greatly improving the flexibility and automation of the testing process, especially suitable for scenarios requiring remote control or intermediate state switching during testing.

[0047] Furthermore, the moving part 320 is reset via an electrical control signal, thereby releasing the contact between the first contact 340 and the second contact 350. This enhances the operational flexibility and automation level of the test fixture, making it particularly suitable for complex testing scenarios requiring remote control, programmed operation, or intermediate state switching during testing. Secondly, the electric push rod provides precise thrust, reliably overcoming the holding force of the locking structure 400, ensuring successful execution of the reset action. This design reduces manual intervention, lowers operational intensity, and avoids errors or damage to equipment that may result from manual operation, improving testing efficiency and safety.

[0048] Specifically, the selection of the electric linear actuator should consider its stroke, thrust, speed, and accuracy. The actuator's stroke should be slightly greater than the sliding distance of the moving part 320 to ensure complete reset. The thrust should be large enough to reliably overcome the attraction force of the locking structure 400 (such as a permanent magnet) and the frictional resistance of the moving part 320. The electric linear actuator can be driven by a stepper motor or a DC motor to achieve precise position control.

[0049] Please see Figure 1-3 In one possible implementation, the electric actuator is controlled by an electric button 370 located on the base 100. The electric button 370 is used to send a drive signal to the electric actuator when pressed, so as to drive the moving part 320 to slide back to the initial position.

[0050] The electric push rod of this invention is controlled by an electric button 370 mounted on the base 100. When the operator presses the electric button 370, the button immediately sends a drive signal to the electric push rod. Upon receiving the signal, the electric push rod drives the moving part 320 to slide along the guide channel 310 according to a preset program, returning it to its initial position. This allows the operator to conveniently and quickly manually control the reset action of the electric push rod, making it particularly suitable for testing scenarios requiring immediate unlocking or manual intervention, thus improving the ease of use and operation of the fixture.

[0051] In the above embodiment, the electric button 370 can be an industrial-grade button with good tactile feedback and durability to withstand frequent operation. The button can be designed as a momentary contact type, that is, it closes when pressed and opens when released to ensure single triggering. To prevent accidental activation, the button can be equipped with a protective cover or a recessed design. The button surface can have clear markings, such as "Reset" or "Unlock", and can integrate LED indicator lights to show the working status of the electric actuator (e.g., green indicates reset, red indicates not reset).

[0052] Please see Figure 1-3 In one possible implementation, the detection structure 500 includes a signal output port 510 for outputting an electrical detection signal when the first contact 340 and the second contact 350 are in contact and connected, so as to allow external testing equipment to identify the port insertion status.

[0053] Specifically, when the first contact 340 and the second contact 350 make contact and form a conductive circuit (i.e., the port is fully inserted and locked), the detection structure 500 immediately outputs a preset electrical detection signal through the signal output port 510. This signal can be a digital high / low level, a pulse signal, or an analog voltage signal, and its purpose is to clearly indicate to the external test equipment that the current port insertion state is "inserted and locked". The external test equipment can determine whether to start testing, record test data, or perform other subsequent operations based on the received signal. This standardized signal output design greatly simplifies the integration between the fixture and the external test system, and improves the efficiency and reliability of automated testing.

[0054] In the above embodiments, the signal output port 510 can adopt various standard interfaces, such as DB9 connectors, USB interfaces, RJ45 interfaces (for Ethernet communication), or fiber optic interfaces, to adapt to different external test equipment. The output electrical detection signal can be a simple switching signal (high level indicates conduction, low level indicates disconnection), or it can be a pulse signal or a coded signal to transmit richer information. To improve the signal's anti-interference capability, optocoupler isolation or differential signal transmission circuits can be added to the signal output port 510. In some scenarios requiring long-distance transmission, RS485 or CAN bus protocols can be used for communication. For ease of debugging and status indication, LED indicators can be integrated inside the detection structure 500 to visually display the signal output status. The power supply to the signal output port 510 should be stable and can be integrated with overvoltage and overcurrent protection circuits to prevent damage to the fixture caused by external equipment failures.

[0055] Please see Figure 1-3 In one possible implementation, the first contact 340 and the second contact 350 are resilient contact structures used to provide a stable electrical connection during contact and to counteract the effect of insertion force fluctuations on contact stability.

[0056] Specifically, both the first contact 340 and the second contact 350 employ a resilient contact structure. This structure allows the contacts to deform upon contact, thereby creating stable contact pressure on the contact surface. This resilient deformation effectively compensates for the effects of fluctuations in insertion force, port size tolerances, or slight alignment deviations, ensuring a reliable electrical connection between the contacts even under non-ideal insertion and removal conditions. Furthermore, the resilient contacts can absorb the impact force during insertion and removal to a certain extent, reducing contact wear and extending the service life of the fixture, thus significantly improving the stability and reliability of the signal output.

[0057] Both the first contact 340 and the second contact 350 employ a resilient contact structure. This resilient contact structure undergoes a certain degree of elastic deformation under pressure, thus providing a continuous and stable contact force during contact. Even if there are fluctuations in insertion force or slight alignment deviations or dimensional tolerances between the port and the fixture during insertion, the resilient contact effectively absorbs these uncertainties, ensuring a stable and reliable electrical connection between the first contact 340 and the second contact 350. Furthermore, the resilient contact can also buffer the impact during insertion and removal to a certain extent, reducing contact wear and extending its service life, thereby significantly improving the stability of the detection signal and the overall reliability of the fixture.

[0058] The resilient contact structure effectively counteracts the effects of insertion force fluctuations, port tolerances, or slight alignment deviations on contact stability, ensuring a stable and reliable electrical connection between the first contact 340 and the second contact 350. This guarantees the accuracy of the detection signal and the reliability of the test. Secondly, the resilient contact absorbs some impact force during contact, reducing contact wear and significantly extending contact lifespan, thus lowering fixture maintenance costs. Furthermore, the stable electrical connection reduces the risk of signal jitter and false triggering, improving the overall performance and efficiency of the testing system.

[0059] In the above embodiments, the elastic contact structure can take various forms. A common one is the pogopin structure, which contains a miniature spring that expands and contracts under pressure, providing a stable contact force. Another form is an elastic metal sheet or elastic conductive rubber, achieving contact through the elastic deformation of the material itself. The contact surface can be designed as a spherical, crown-shaped, or V-groove to optimize the contact area and self-cleaning ability. The contact material should be a highly conductive, corrosion-resistant, and wear-resistant alloy, such as a gold-plated beryllium copper alloy. This is to ensure long-term stability.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0063] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A port mis-insertion protection test fixture, characterized in that, include: Base; A test connector, mounted on the base, is used to guide the port under test to be inserted in a unique direction and to define the insertion endpoint position; A trigger structure is provided on the base, which is used to be contacted and driven to move during the insertion of the port under test; A locking structure, connected to the triggering structure, is used to enter a locking state after the triggering structure is driven, thereby keeping the port in the insertion position; The detection structure is linked to the locking structure and is used to output a detection signal when the locking structure is in a locked state and not output a detection signal when the locking structure is in an unlocked state. Specifically, the detection structure only outputs a valid detection signal after the port under test is correctly inserted and locked.

2. The port mis-insertion protection test fixture according to claim 1, characterized in that, The test connector includes: A guide component, fixedly installed on the base and located on one side of the test connector, is used to guide the port to be inserted in a predetermined direction; A limiting member is disposed at one end of the guide member to limit the insertion depth of the port, so that the port stops when it contacts the limiting member when inserted to a preset position.

3. The port mis-insertion protection test fixture according to claim 1, characterized in that, The triggering structure includes: A guide channel, disposed on the base and extending along the insertion direction of the port, is used to define the sliding path of the moving part; The movable component is slidably disposed within the guide channel, located between the test connector and the limiting component, with one end facing the port insertion direction. When the port is inserted to a predetermined depth, its front end face contacts the movable component and pushes the movable component to slide along the guide channel. A fixing element is fixedly mounted on the base and located at the sliding termination position of the guide channel; The first contact point is located on the front end face of the moving part; The second contact is disposed on the fixing member, and is positioned corresponding to the first contact. The first contact and the second contact are respectively electrically connected to the detection structure; When the moving part slides to the end position of the guide channel under the push of the port, the first contact point and the second contact point make contact to form a conductive circuit, triggering the detection structure to output a detection signal.

4. The port mis-insertion protection test fixture according to claim 3, characterized in that, A reset member is provided between the movable member and the base. The reset member is used to apply force to the movable member after the port is pulled out, so that it slides back to the initial position along the guide channel, so that the first contact and the second contact are disconnected.

5. The port mis-insertion protection test fixture according to claim 4, characterized in that, The locking structure includes: A first permanent magnet is fixedly mounted on the moving part; The second permanent magnet is fixedly mounted on the fixing member, and its position corresponds to the end point of the guide channel; When the movable component slides to the endpoint position under the push of the port and the first contact point contacts the second contact point, the first permanent magnet and the second permanent magnet face each other and attract each other, thereby keeping the movable component at the endpoint position and locking the port.

6. The port mis-insertion protection test fixture according to claim 4, characterized in that, The reset component is an electric push rod, which is installed inside the base and connected to the moving component. It is used to receive a control signal and drive the moving component to slide back to the initial position along the guide channel when the port is not pulled out, so as to release the contact between the first contact and the second contact.

7. The port mis-insertion protection test fixture according to claim 6, characterized in that, The electric push rod is controlled by an electric button mounted on the base. The electric button is used to send a drive signal to the electric push rod when pressed, so as to drive the moving part to slide back to the initial position.

8. The port mis-insertion protection test fixture according to claim 7, characterized in that, The detection structure includes a signal output port for outputting an electrical detection signal when the first contact and the second contact are in contact and connected, so that external testing equipment can identify the port insertion status.

9. The port mis-insertion protection test fixture according to claim 8, characterized in that, The first contact and the second contact are elastic contact structures, which are used to provide a stable electrical connection during contact and to offset the influence of insertion force fluctuations on contact stability.

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