Circuit testing device for multifunctional power adapter

Abstract

The invention discloses a circuit testing device for a multifunctional power adapter, and relates to the technical field of power adapter testing, the circuit testing device comprises a fixed seat, the side wall of the fixed seat is provided with a mounting hole, the inner wall of the mounting hole is fixedly connected with a ventilation ring, the inner wall of the ventilation ring is fixedly connected with a testing socket, and the testing socket is fixedly connected with a power supply. A pressing mechanism is arranged on the upper side of the interior of the fixing seat, a heat dissipation mechanism is arranged on the lower side of the interior of the fixing seat, an anti-adhesion mechanism is arranged on the side wall of the fixing seat, a rotating shaft is fixedly connected to the middle of the inner wall of the fixing seat, and a hinge frame is hinged to the outer wall of the rotating shaft through a torsional spring. The device can achieve the cooling effect on the clamping blocks in the process of testing the power adapter, further avoids the potential safety hazards caused by too high heat, and has the advantages of being high in practicability and capable of reducing the potential safety hazards caused by long-time use.

Description

Technical Field

[0001] The invention relates to the technical field of power adapter testing, in particular to a circuit testing device for a multifunctional power adapter. Background Art

[0002] The power adapter includes a housing, a power cord, a transfer cord and an adapter module. Before assembly, the adapter module needs to be tested for charging and discharging functions and overload protection functions. The adapter module includes a PCB board and various electronic components soldered on the PCB board;

[0003] When testing an assembled power adapter, generally, its output and input terminals are respectively inserted into a test circuit for power-on detection, so as to test whether the adapter can be used. In consideration of the safety of the power adapter, the test voltage is generally greater than the actual use voltage, so as to determine the actual performance of the adapter. However, since the adapter is inserted into the detection device in turn during the test, the detection device is greatly worn, and the socket is easily damaged. In addition, since the test voltage is high, frequent plugging and unplugging of the power causes the temperature of the test socket to rise, thereby causing safety hazards. Therefore, a device is needed to avoid the above situation.

[0004] Therefore, it is necessary to design a circuit testing device for a multifunctional power adapter that is highly practical and can reduce potential safety hazards caused by long-term use. Summary of the invention

[0005] The object of the present invention is to provide a circuit testing device for a multi-functional power adapter to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a circuit testing device for a multi-functional power adapter, comprising a fixed seat, a mounting hole is opened on the side wall of the fixed seat, a breathable ring is fixedly connected to the inner wall of the mounting hole, a test socket is fixedly connected to the inner wall of the breathable ring, a downward pressing mechanism is arranged on the upper inner side of the fixed seat, a heat dissipation mechanism is arranged on the lower inner side of the fixed seat, an anti-adhesion mechanism is arranged on the side wall of the fixed seat, a rotating shaft is fixedly connected to the middle part of the inner wall of the fixed seat, an articulated frame is hinged to the outer wall of the rotating shaft through a torsion spring, a clamping block is fixedly connected to one end of the articulated frame, a wiring harness hole is opened on the lower side of the fixed seat, and the wiring harness hole connects the interior of the fixed seat with the lower side of the fixed seat.

[0007] According to the above technical solution, the pressing mechanism includes a fixing frame, the outer wall of the fixing frame is fixedly connected to the outer wall of the fixing seat, the inner wall of the fixing frame is connected to a winding rod through a clockwork spring, the outer wall of the winding rod is fixedly connected to a pull rope, the lower part of the pull rope is wound around the outer wall of the winding rod, the upper side of the outer wall of the fixing seat is rotatably connected to a support rod through a bearing, the upper side of the inner wall of the fixing seat is slidably connected to a pressure plate, the upper end of the pull rope is fixedly connected to the upper surface of the pressure plate through the upper side of the support rod, and the heat dissipation mechanism is located on the lower side of the pressure plate.

[0008] According to the above technical solution, the heat dissipation mechanism includes a base plate, the lower surface of the base plate contacts the upper end of the clamping block, and the outer wall of the base plate is slidably connected to the inner wall of the fixed seat, the upper surface of the base plate is fixedly connected with an airbag, the upper end of the airbag is fixedly connected to the lower surface of the pressure plate, the upper side of the outer wall of the base plate is fixedly connected with a first spring, the upper end of the first spring is fixedly connected to the lower surface of the pressure plate, and an exhaust port is opened in the middle of the base plate, and the exhaust port connects the interior of the airbag with the lower side of the base plate.

[0009] According to the above technical solution, the force required for the deformation of the first spring is smaller than the force required for the deformation of the torsion spring at the connection between the outer wall of the rotating shaft and the hinge frame, and two clamping blocks are provided, the two clamping blocks are symmetrically arranged on the left and right, and the lower side of the exhaust port faces between the two clamping blocks.

[0010] According to the above technical solution, the anti-adhesion mechanism includes a conductive block, a sliding hole is opened on the side wall of the fixed seat, the sliding hole penetrates the inside and outside of the fixed seat, and the outer wall of the conductive block is slidably connected to the inner wall of the sliding hole, one end of the conductive block located on the outside of the fixed seat is fixedly connected to a second spring, the other end of the second spring is fixedly connected to the outer wall of the fixed seat, the other end of the conductive block extends to the interior of the fixed seat, and the end of the conductive block located inside the fixed seat is located on the deflection path of the clamping block.

[0011] According to the above technical solution, the anti-adhesion mechanism also includes a block, one end of which is fixedly connected to the inner wall of the fixed seat, a baffle is provided on the lower side of the block, the outer wall of the baffle is hinged to the inner wall of the fixed seat by a torsion spring, the upper surface of the baffle is in contact with the lower side of the block, one end of the inner wall of the baffle fixed seat is in contact with the outer wall of the clamping block, and the anti-adhesion mechanism also includes an elastic sheet, one end of which is fixedly connected to the outer wall of the clamping block.

[0012] According to the above technical solution, the elastic sheet is made of elastic metal material, and the end of the baffle away from the inner wall of the fixing seat is located on the deflection path of the elastic sheet.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are: by providing structures such as a fixing seat and a pressing mechanism, when the device tests the power adapter, the traditional plug-in plug is replaced with a plug with two-side contact, thereby avoiding the situation where the socket is damaged;

[0014] By providing a heat dissipation mechanism, the device can achieve a cooling effect on the clamping block during the test of the power adapter, thereby avoiding safety hazards caused by excessive heat;

[0015] By providing an anti-adhesion mechanism, the device can prevent dust and debris from remaining on the clamping block during use, thereby preventing electric sparks from being generated when in contact with the plug, thereby ensuring safety in use;

[0016] By providing a ventilation ring with openings and a heat dissipation mechanism, the internal heat of the device can be better dissipated, and the temperature of the test socket can also be controlled, thereby ensuring safe use.

[0017] According to the above technical solution, high-precision temperature sensors are also installed at key parts of the circuit connection module to monitor temperature changes in real time. When the temperature exceeds the set threshold, the control unit automatically starts the cooling fan to cool down and issues an alarm. If the temperature continues to rise, the control unit will automatically cut off the test circuit to prevent safety accidents such as fire caused by overheating.

[0018] According to the above technical solution, an overvoltage and overcurrent protection device is set in the test circuit. When the test voltage or current exceeds the preset safety range, the protection device immediately acts to cut off the circuit and protect the test device and the adapter from damage. At the same time, the protection device has a self-recovery function, which can automatically restore the circuit connection after the fault is eliminated, making it convenient to continue the test.

[0019] Specifically, during the test, the power adapter to be tested is placed on the fixed module of the test platform, and it is firmly fixed by adjusting the fixture to ensure that the input and output ports of the adapter are accurately connected to the corresponding interfaces of the connection module. After starting the test device, the input connection end automatically identifies the input specifications of the adapter, the output connection end identifies the output specifications, and transmits the information to the control unit. The control unit automatically configures the test circuit parameters, such as test voltage, current range, etc., according to the identification results. The control unit controls the charge and discharge test unit to charge and discharge the adapter. During the charge and discharge process, the voltage and current monitoring unit monitors the voltage and current change curves in real time, and transmits the data to the control unit for analysis to determine whether the charge and discharge function is normal. Gradually increase the load until it exceeds the rated overload value of the adapter, observe the response of the overload protection test unit, monitor whether the adapter can start the overload protection mechanism in time, cut off the circuit, and record the trigger time and action characteristics of the overload protection.

[0020] According to the above technical solution, the charge and discharge test unit includes a charge and discharge circuit and a voltage detection circuit, and both are connected to the control unit of the device. In order to protect the product to be tested and the device, the device applies a load increment program and a protection response detection program. The control unit gradually increases the load of the load simulation circuit according to a preset load increment step (such as 0.1A), and reads the output current data in real time. When the output current reaches the rated overload value of the adapter, the overload protection trigger signal begins to be closely monitored. Once the overload protection trigger signal is detected, the trigger time is recorded and the load is stopped from being increased. Continue to monitor the output status of the adapter for a period of time (such as 10s), including whether the voltage and current return to normal or remain within a safe range, so as to judge the effectiveness and stability of the overload protection mechanism. If an abnormal situation occurs during the monitoring period (such as continuous voltage fluctuations, excessive current, etc.), the overload protection function is judged to be abnormal.

[0021] Specifically, the protection response detection procedure is carried out according to the following framework:

[0022] Trigger signal capture: When the overload protection trigger signal is detected by the trigger signal detection circuit and transmitted to the control unit, the control unit immediately enters the protection response detection program. First, the current system time is recorded as the overload protection trigger time t_trigger.

[0023] Condition monitoring initialization:

[0024] Start a timer and set the monitoring duration to T_monitor (e.g. 10s).

[0025] Initialize the variables n_voltage_abnormal and n_current_abnormal used to record the number of voltage and current abnormalities to 0.

[0026] The voltage and current abnormality judgment thresholds V_threshold and I_threshold are set. These thresholds are determined according to the normal working range and safety standards of the adapter.

[0027] Continuous monitoring state: During the operation of the timer, the output voltage V_output and the output current I_output of the adapter are read at a fixed time interval Δt (eg, 100ms).

[0028] Voltage judgment: If |V_output-V_nominal|>V_threshold (where V_nominal is the rated output voltage of the adapter), add 1 to n_voltage_abnormal.

[0029] Current judgment: If |I_output-I_normal|>I_threshold (where I_normal is the expected stable current of the adapter after normal operation or overload protection), n_current_abnormal is increased by 1.

[0030] Result determination: When the timer times out, the result determination is made based on the values ​​of n_voltage_abnormal and n_current_abnormal.

[0031] If n_voltage_abnormal==0 and n_current_abnormal==0, it is determined that the overload protection function is normal, and the adapter can stably recover to a normal working state or a safe state after the overload protection is triggered.

[0032] If n_voltage_abnormal>0 or n_current_abnormal>0, it is determined that the overload protection function is abnormal. There may be problems such as voltage or current instability. Further inspection or recording of detailed abnormal data is required to analyze the cause of the fault.

[0033] Even better, you can add redundancy-reducing programs to increase computing speed and improve device accuracy.

[0034] The specific manifestations are as follows:

[0035]

[0036]

[0037]

[0038]

[0039]

[0040] In this way, a self-check function is added to the original overload protection trigger signal processing function. The self-check function selfCheck will check whether key hardware connections (such as voltage and current sampling circuits), timers, and communication between the control unit and other modules are working properly. If any check fails during the self-check process, the function will directly return and set the self-check status to failure. Only after the self-check is successful will the subsequent overload protection trigger signal processing process continue to be executed. This can improve the reliability and stability of the entire detection program and discover potential problems in advance.

[0041] Through the above design, a multi-function power adapter circuit testing device is achieved which is highly practical and can reduce potential safety hazards caused by long-term use, and has great promotion and application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0043] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0044] Figure 2 It is a schematic diagram of the internal structure of the fixing seat of the present invention;

[0045] Figure 3 It is a schematic diagram of the structure of the pressing mechanism of the present invention;

[0046] Figure 4 It is a schematic diagram of the cross-sectional structure of the airbag of the present invention;

[0047] Figure 5 It is a schematic diagram of the cross-sectional structure of the present invention;

[0048] Figure 6 The present invention Figure 4 A is a schematic diagram of the enlarged structure of the middle part;

[0049] In the figure: 1, fixing seat; 2, breathable ring; 3, test socket; 4, pressing mechanism; 5, heat dissipation mechanism; 6, anti-adhesion mechanism; 7, rotating shaft; 8, hinged frame; 9, clamping block; 10, wiring harness hole; 401, fixing frame; 402, winding rod; 403, pull rope; 404, support rod; 405, pressure plate; 501, bottom plate; 502, airbag; 503, first spring; 504, exhaust port; 601, conductive block; 602, second spring; 603, block; 604, baffle; 605, elastic sheet. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] See also Figure 1-6The present invention provides a technical solution: a circuit testing device for a multifunctional power adapter, comprising a fixing seat 1, a mounting hole is provided on the side wall of the fixing seat 1, a breathable ring 2 is fixedly connected to the inner wall of the mounting hole, a test socket 3 is fixedly connected to the inner wall of the breathable ring 2, a pressing mechanism 4 is provided on the upper inner side of the fixing seat 1, a heat dissipation mechanism 5 is provided on the lower inner side of the fixing seat 1, an anti-adhesion mechanism 6 is provided on the side wall of the fixing seat 1, a rotating shaft 7 is fixedly connected to the middle part of the inner wall of the fixing seat 1, an articulated frame 8 is hinged to the outer wall of the rotating shaft 7 through a torsion spring, a clamping block 9 is fixedly connected to one end of the articulated frame 8, a wiring harness hole 10 is provided on the lower side of the fixing seat 1, and the wiring harness hole 10 connects the interior of the fixing seat 1 with the lower side of the fixing seat 1.

[0052] The pressing mechanism 4 comprises a fixing frame 401, the outer wall of the fixing frame 401 is fixedly connected to the outer wall of the fixing seat 1, the inner wall of the fixing frame 401 is connected to a winding rod 402 through a clockwork spring, the outer wall of the winding rod 402 is fixedly connected to a pull rope 403, the lower part of the pull rope 403 is wound around the outer wall of the winding rod 402, the upper side of the outer wall of the fixing seat 1 is rotatably connected to a support rod 404 through a bearing, the upper side of the inner wall of the fixing seat 1 is slidably connected to a pressing plate 405, the upper end of the pull rope 403 is fixedly connected to the upper surface of the pressing plate 405 through the upper side of the support rod 404, and the heat dissipation mechanism 5 is located at the lower side of the pressing plate 405;

[0053] The anti-adhesion mechanism 6 includes a conductive block 601, a sliding hole is provided on the side wall of the fixed seat 1, the sliding hole penetrates the inside and outside of the fixed seat 1, and the outer wall of the conductive block 601 is slidably connected to the inner wall of the sliding hole, one end of the conductive block 601 located outside the fixed seat 1 is fixedly connected to a second spring 602, the other end of the second spring 602 is fixedly connected to the outer wall of the fixed seat 1, the other end of the conductive block 601 extends to the inside of the fixed seat 1, and the end of the conductive block 601 located inside the fixed seat 1 is located on the deflection path of the clamping block 9

[0054] When in use, the two conductive blocks 601 and the test socket 3 are energized. When testing the power adapter, it is only necessary to insert the output end of the power adapter into the test socket 3, and then place the plug of the power adapter on the two pressure plates 405. At this time, the two pins of the plug are located between the pressure plates 405, and the edge of the plug is located on the upper surface of the two pressure plates 405. Then press down. In the process of pressing down the pressure plate 405, the pressure plate 405 will pull the pull rope 403 to move, and then the pull rope 403 will drive the pull rope 403 to rotate, so that the clockwork spring at the connection between the winding rod 402 and the fixing frame 401 is tightened, and then the downward movement of the pressure plate 405 will eventually press the clamping block 9 downward. Then, the clamping block 9 drives the articulated frame 8 to deflect downward around the rotating shaft 7, so that the clamping block 9 contacts the energized conductive block 601, and then the two clamping blocks 9 move toward the middle to contact the two pins of the power adapter, thereby completing the power supply to the power adapter. After the test is completed, stop applying pressure to the exhaust port 504, and under the elastic force of the torsion spring at the connection between the articulated frame 8 and the rotating shaft 7 and the elastic force of the spring at the connection between the winding rod 402 and the fixed frame 401, the pressure plate 405, the pull rope 403, and the clamping block 9 are reset, and then the power adapter can be safely removed, and the traditional plug-in and unplugging is replaced by the form of close contact on both sides, thereby avoiding damage to the socket;

[0055] The heat dissipation mechanism 5 includes a bottom plate 501, the lower surface of the bottom plate 501 contacts the upper end of the clamping block 9, and the outer wall of the bottom plate 501 is slidably connected to the inner wall of the fixing seat 1, the upper surface of the bottom plate 501 is fixedly connected with an air bag 502, the upper end of the air bag 502 is fixedly connected to the lower surface of the pressing plate 405, the upper side of the outer wall of the bottom plate 501 is fixedly connected with a first spring 503, the upper end of the first spring 503 is fixedly connected to the lower surface of the pressing plate 405, an exhaust port 504 is opened in the middle of the bottom plate 501, the exhaust port 504 connects the inside of the air bag 502 with the lower side of the bottom plate 501, the force required for the deformation of the first spring 503 is less than the force required for the deformation of the torsion spring at the connection between the outer wall of the rotating shaft 7 and the hinge frame 8, and two clamping blocks 9 are provided, the two clamping blocks 9 are symmetrically arranged on the left and right, and the lower side of the exhaust port 504 faces between the two clamping blocks 9;

[0056] During the process of the pressing plate 405 descending, the pressing plate 405 will first press down the airbag 502, causing the airbag 502 to shrink downward. At this time, the gas inside the airbag 502 is discharged downward through the exhaust port 504, and the airflow blows the clamping block 9 and the inside of the fixing seat 1, so that the heat inside the fixing seat 1 is discharged outward, so that the airflow inside the fixing seat 1 is better exchanged with the external airflow. Then, after the airbag 502 and the first spring 503 shrink to the limit, they will push the bottom plate 501 to move downward to complete the test, thereby avoiding the safety hazard caused by the excessively high temperature inside the fixing seat 1.

[0057] The anti-adhesion mechanism 6 also includes a stopper 603, one end of which is fixedly connected to the inner wall of the fixing seat 1, a baffle 604 is arranged on the lower side of the stopper 603, the outer wall of the baffle 604 is hinged to the inner wall of the fixing seat 1 through a torsion spring, the upper surface of the baffle 604 contacts the lower side of the stopper 603, one end of the baffle 604 on the inner wall of the fixing seat 1 contacts the outer wall of the clamping block 9, the anti-adhesion mechanism 6 also includes an elastic sheet 605, one end of the elastic sheet 605 is fixedly connected to the outer wall of the clamping block 9, the elastic sheet 605 is made of elastic metal, and one end of the baffle 604 away from the inner wall of the fixing seat 1 is located on the deflection path of the elastic sheet 605;

[0058] When the clamping block 9 is pressed downward, the elastic sheet 605 will move to the other side of the baffle 604 by pushing the baffle 604 to deflect. When the test clamping block 9 is reset, the clamping block 9 is separated from the conductive block 601 at this time, so that the clamping block 9 is powered off. At the same time, the elastic sheet 605 will be blocked by the baffle 604 during the reset process. As the elastic sheet 605 is reset, the baffle 604 will pull the elastic sheet 605 to deform. Then, the elastic sheet 605 passes through the baffle 604. Due to the elasticity of the elastic sheet 605 itself, it hits the clamping block 9, and the dust and debris adhered to the surface of the clamping block 9 are shaken off, thereby avoiding the situation that the debris adhered to the surface of the clamping block 9 causes sparks.

[0059] Since the dust adhered to the surface of the clamping block 9 will be shaken off, and then air flow will be ejected from the lower side of the base plate 501, the air flow will carry the dust and be discharged outward through the breathable ring 2. The discharged air flow will cool the test socket 3, and the dust inside the fixing seat 1 will be cleaned synchronously, thereby achieving a better cooling and dust removal effect and reducing safety hazards.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A circuit testing device for a multifunctional power adapter, comprising a fixing seat (1), characterized in that: The side wall of the fixing seat (1) is provided with a mounting hole, the inner wall of the mounting hole is fixedly connected with a vent ring (2), the inner wall of the vent ring (2) is fixedly connected with a test socket (3), the upper inner side of the fixing seat (1) is provided with a pressing mechanism (4), the lower inner side of the fixing seat (1) is provided with a heat dissipation mechanism (5), the side wall of the fixing seat (1) is provided with an anti-adhesion mechanism (6), the middle part of the inner wall of the fixing seat (1) is fixedly connected with a rotating shaft (7), the outer wall of the rotating shaft (7) is hinged with an articulated frame (8) through a torsion spring, one end of the articulated frame (8) is fixedly connected with a clamping block (9), the lower side of the fixing seat (1) is provided with a wiring harness hole (10), the wiring harness hole (10) connects the interior of the fixing seat (1) with the lower side of the fixing seat (1).

2. A circuit testing device for a multifunctional power adapter according to claim 1, characterized in that: The pressing mechanism (4) comprises a fixing frame (401), the outer wall of the fixing frame (401) is fixedly connected to the outer wall of the fixing seat (1), the inner wall of the fixing frame (401) is connected to a winding rod (402) via a spring, the outer wall of the winding rod (402) is fixedly connected to a pull rope (403), the lower part of the pull rope (403) is wound around the outer wall of the winding rod (402), the upper side of the outer wall of the fixing seat (1) is rotatably connected to a support rod (404) via a bearing, the upper side of the inner wall of the fixing seat (1) is slidably connected to a pressure plate (405), the upper end of the pull rope (403) is wound around the upper side of the support rod (404) and is fixedly connected to the upper surface of the pressure plate (405), and the heat dissipation mechanism (5) is located at the lower side of the pressure plate (405).

3. The circuit testing device for a multifunctional power adapter according to claim 2, characterized in that: The heat dissipation mechanism (5) comprises a base plate (501), the lower surface of the base plate (501) contacts the upper end of the clamping block (9), and the outer wall of the base plate (501) is slidably connected to the inner wall of the fixing seat (1), the upper surface of the base plate (501) is fixedly connected with an air bag (502), the upper end of the air bag (502) is fixedly connected to the lower surface of the pressing plate (405), the upper side of the outer wall of the base plate (501) is fixedly connected with a first spring (503), the upper end of the first spring (503) is fixedly connected to the lower surface of the pressing plate (405), and an exhaust port (504) is opened in the middle of the base plate (501), and the exhaust port (504) connects the interior of the air bag (502) with the lower side of the base plate (501).

4. The circuit testing device for a multifunctional power adapter according to claim 3, characterized in that: The force required for the deformation of the first spring (503) is smaller than the force required for the deformation of the torsion spring at the connection between the outer wall of the rotating shaft (7) and the hinge frame (8), and two clamping blocks (9) are provided, and the two clamping blocks (9) are symmetrically arranged on the left and right, and the lower side of the exhaust port (504) faces between the two clamping blocks (9).

5. The circuit testing device for a multifunctional power adapter according to claim 4, characterized in that: The anti-adhesion mechanism (6) comprises a conductive block (601), a sliding hole is provided on the side wall of the fixed seat (1), the sliding hole penetrates the inside and outside of the fixed seat (1), and the outer wall of the conductive block (601) is slidably connected to the inner wall of the sliding hole, one end of the conductive block (601) located outside the fixed seat (1) is fixedly connected to a second spring (602), the other end of the second spring (602) is fixedly connected to the outer wall of the fixed seat (1), the other end of the conductive block (601) extends to the inside of the fixed seat (1), and the end of the conductive block (601) located inside the fixed seat (1) is located on the deflection path of the clamping block (9).

6. The circuit testing device for a multifunctional power adapter according to claim 5, characterized in that: The anti-adhesion mechanism (6) further comprises a stopper (603), one end of which is fixedly connected to the inner wall of the fixed seat (1); a baffle (604) is provided on the lower side of the stopper (603); the outer wall of the baffle (604) is hinged to the inner wall of the fixed seat (1) via a torsion spring; the upper surface of the baffle (604) contacts the lower side of the stopper (603); one end of the inner wall of the baffle (604) fixed seat (1) contacts the outer wall of the clamping block (9); and the anti-adhesion mechanism (6) further comprises an elastic sheet (605), one end of which is fixedly connected to the outer wall of the clamping block (9).

7. The circuit testing device for a multifunctional power adapter according to claim 6, characterized in that: The elastic sheet (605) is made of an elastic metal material, and one end of the baffle (604) away from the inner wall of the fixing seat (1) is located on the deflection path of the elastic sheet (605).

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