Detector with a locking mechanism

Abstract

The present invention relates to a detector with a locking mechanism, which includes a circular turntable, a door located above the turntable and rotatable relative to the turntable, a first motor and a second motor. The turntable is driven by the first motor to rotate, thereby driving the plurality of test channels to rotate. The second motor is used to open the door. The detector further includes a locking mechanism. When the door is in the open state, the first motor stops driving the turntable to rotate, and the locking mechanism automatically locks the turntable to prevent it from rotating. When the door is in the closed state, the locking mechanism automatically releases the turntable, and the first motor drives the turntable to rotate. This detector has a locking mechanism that locks the turntable of the detector when the door is open, effectively preventing the turntable from rotating accidentally, solving technical problems such as difficulty in inserting the detection card due to inaccurate positioning of the turntable and affecting the normal progress of the detection. At the same time, it can avoid the problem of inaccurate detection results caused by incorrect insertion.

Description

Technical Field

[0001] The present invention belongs to the technical field of in vitro diagnostic devices, and particularly relates to a detector with a locking mechanism for multi-channel detection. Background Art

[0002] In vitro diagnosis is an important part of the medical testing field. It uses in vitro samples to analyze various physiological indicators of the subject, and the test results can be obtained by the naked eye or a detector. During the detection, the detector can be placed on the stage of the test card and transported into the detector. The detection light source irradiates the result display area of the test card. The photodiode receives the reflected light signal of the test card and transmits the data to the data processing system to complete the analysis of the test result, and the detector outputs the test result.

[0003] Fluorescence immunoassay technology is a method that combines the specificity of immunological reactions and the sensitivity of fluorescence technology. The fluorescence immunoanalyzer is based on the principle of immunochromatography. A light source with a specific wavelength irradiates the test area of the test card. The fluorescent label located in the test area emits light with a wavelength different from that of the light source after being excited and is captured by the photoelectric induction device to form a current signal. The magnitude of the current is related to the concentration of the analyte in the sample, thereby realizing qualitative or quantitative analysis of the analyte in the sample.

[0004] Fluorescence immunoanalyzers can be used for ordinary fluorescence detection and time-resolved fluorescence determination. Existing fluorescence immunoanalyzers are of two types: single-channel and multi-channel. The single-channel fluorescence immunoanalyzer can only detect one test plate at a time, resulting in low detection efficiency. The multi-channel fluorescence immunoanalyzer improves the detection efficiency. However, for existing multi-channel fluorescence immunoanalyzers, the following situations that affect detection often occur: 1. The test card is not fully inserted in place. When the test card is transported to the detection area of the analyzer, the test area on the test card deviates from the detection area of the analyzer, resulting in the analyzer being unable to correctly detect the test area of the test card, thus leading to inaccurate test results; 2. When the door of the analyzer is opened to place the test card on the turntable, the operator's finger may touch the turntable and cause the turntable to rotate accidentally, affecting the entire test process; 3. During the process of closing the door of the analyzer, if the operator's finger fails to be withdrawn in time, it may be clamped by the door, injuring the operator; 4. During the process of the analyzer ejecting the test card after the detection is completed, due to reasons such as accidental power failure, the test card is easily stuck in the test channel and cannot be smoothly ejected, resulting in analyzer failure; 5. One analyzer can only detect the same item, and the analyzer does not have universality. Therefore, when multiple different items need to be detected, multiple corresponding analyzers need to be purchased separately, greatly increasing the cost. The present invention is generated under such a background. Summary of the Invention

[0005] The object of the present invention is to provide a detector with a locking mechanism, which locks the turntable during the door opening process to prevent the turntable from being accidentally pushed, resulting in inaccurate positioning of the turntable and affecting the normal operation of the detector.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a detector with a locking mechanism, including a circular turntable, a door located above the turntable and rotatable relative to the turntable, a first motor and a second motor, the turntable is provided with a plurality of test channels extending from the central area of the turntable to the outer periphery of the turntable, each test channel can be inserted with a test card, the turntable is driven to rotate by the first motor and then drives the plurality of test channels to rotate, the second motor is used to open the door, and the detector also includes a locking mechanism, when the door is in an open state, the first motor stops driving the turntable to rotate, and the locking mechanism automatically locks the turntable to prevent the turntable from rotating; when the door is in a closed state, the locking mechanism automatically releases the turntable, and the first motor drives the turntable to rotate.

[0007] As a further improvement of the present invention, the locking mechanism includes a limiting hole with the same number as the test channel, a boss, a top block limited to move up and down only in the vertical direction, and a latch installed on the top block, the limiting hole is located in the central area of the turntable and each limiting hole corresponds to a test channel, the boss is located on the upper surface of the door, the boss and the top block respectively include a mutually fitting sloped surface, when the door is in the process of opening, the sloped surface on the boss gradually releases the sloped surface on the top block, causing the top block to move vertically downward, thereby driving the latch to move vertically downward, the lower end of the latch enters the limiting hole, and the latch automatically locks the turntable, thereby preventing the turntable from rotating; when the door is in the process of closing, the sloped surface on the boss gradually lifts the sloped surface on the top block, causing the top block to move vertically upward and driving the latch to move vertically upward, so that the lower end of the latch leaves the limiting hole, and the latch automatically releases the turntable, thereby not preventing the turntable from rotating.

[0008] As a further improvement of the present invention, a compression spring is sleeved on the middle part of the latch. When the door is opened, the door drives the boss to rotate together, the sloped surface on the boss is gradually separated from the sloped surface on the top block, the top block gradually loses the support of the boss, and the compression spring stretches to push the latch and the top block to slide vertically downward, so that the bottom end of the latch is inserted into the limiting hole on the turntable, locking the turntable and thus limiting the rotation of the turntable; conversely, when the door is closed, the door drives the boss to rotate in the opposite direction, the sloped surface on the boss is matched with the sloped surface on the top block, pushing the top block to move vertically upward, lifting the top block, pushing the latch in the top block to lift upward, so that the bottom of the latch is separated from the limiting hole on the turntable, thereby unlocking the turntable, so that the rotation of the turntable is no longer restricted, and at the same time the compression spring sleeved on the middle part of the latch is further compressed.

[0009] As a further improvement of the present invention, the top block and the plug pin are restricted by the guide posts of the detector to move only vertically up and down.

[0010] In a further technical solution, the detector further includes an automatic card pushing mechanism. The detector with the automatic card pushing mechanism can automatically push the test card that has not been inserted into the required position for detection into the required position for detection, so that the test card is accurately positioned in the detector, facilitating subsequent detection.

[0011] As a further improvement of the present invention, the automatic card pushing mechanism is arranged at a suitable position on the outer periphery of the turntable of the transmission module. After the detector is started, the turntable drives the test card to rotate. When the test card reaches the position where the automatic card pushing mechanism is located, the automatic card pushing mechanism automatically pushes the test card that has not been inserted into the required position for detection into the required position in the test channel, so that the test card is accurately positioned in the test channel.

[0012] As a further improvement of the present invention, the automatic card pushing mechanism includes an inclined surface facing the outer periphery of the turntable. When the turntable drives the test card to pass through this inclined surface, this inclined surface squeezes the tail of the test card, and the inclined surface pushes the test card to move in the test channel towards the center direction of the turntable until the test card is inserted into the required position for detection.

[0013] As a further improvement of the present invention, the automatic card pushing mechanism includes a spring piece. The spring piece includes an inclined surface facing the outer periphery of the turntable. When the turntable rotates and drives the test card to pass through this inclined surface, the inclined surface squeezes the tail of the test card, thereby pushing the test card to move in the test channel towards the center direction of the turntable until the test card is inserted into the required position for detection.

[0014] As a further improvement of the present invention, a convex block is provided at the end of each test channel of the turntable. During the process of the test card being inserted into the test channel, when the head of the test card is blocked by this convex block, it means that the test card has been inserted into the required position for detection.

[0015] As a further improvement of the present invention, each test card respectively includes an identification corresponding to its biological parameter detection item. The detector has a component for identifying the identification on the test card, and the detector assigns incubation parameters corresponding to its identification information to each test card according to the identified information.

[0016] As a further improvement of the present invention, the identification on the test card includes three two-dimensional codes, and each two-dimensional code corresponds to a piece of information. Multiple groups of information can be obtained after arranging and combining the information of these three two-dimensional codes.

[0017] On the other hand, the present invention also provides a detection system. The detection system has multiple detection channels, can accommodate multiple test cards simultaneously, and is applicable to different types of test cards.

[0018] A detection system of the present invention includes the aforementioned detector and detection card. The detector further includes a housing and a detection component inside the housing. The housing includes an insertion port for inserting the detection card into the detector for detection. The detection component includes a transfer module, a test module, and an ejection module. The transfer module includes a circular turntable. At least three test channels are provided on the turntable, and the test channels are evenly distributed in a star shape on the turntable. One end of the test channel is close to the center of the turntable and the other end extends to the outer periphery of the turntable. Each test channel can insert a detection card. At least two identifiers are provided on the detection card. The detection component includes identifier recognition components equal in number to the identifiers on the detection card. During the process of the turntable transferring the detection card, these identifier recognition components sequentially recognize the identifiers on the detection card and form a signal combination, which is then transmitted to the control system of the detector. The signal combination at least includes the minimum incubation time of the detection card. After the detection card starts to incubate in the detector, the control system of the detector starts to count down for each detection card according to the minimum incubation time of each detection card and transfers each detection card to the test module for detection in the order of the end of the countdown. The test module outputs a detection result after recognizing the detection signal on the detection card. The ejection module is used to eject the detected detection card from the test channel.

[0019] As a further improvement of the present invention, at least two identifiers on the detection card are two-dimensional codes, barcodes, or a combination of two-dimensional codes and barcodes. The identifier recognition components on the detection component are staggeredly arranged in space. During the process of the turntable transferring the detection card, the first identifier component on the detection component recognizes the first identifier on the detection card, and then the second identifier component on the detection component recognizes the second identifier on the detection card, and so on, until all the identifiers on the detection card are recognized.

[0020] As a further improvement of the present invention, at least two identifiers on the detection card further include information corresponding to the detected biological parameters. The detector can be applicable to detection cards for detecting the same biological parameter items or detection cards for detecting different biological parameter items.

[0021] As a further improvement of the present invention, the detector sets the minimum incubation time according to the detected biological parameters included in the identifier on each detection card.

[0022] As a further improvement of the present invention, the detector further includes a door that can rotate relative to the turntable. Windows equal in number to the identifiers on the detection card and corresponding in position to the positions of the identifier recognition components on the detector are provided on the door. When the detector recognizes the identifiers on the detection card, these windows enable the identifiers on the detection card to be recognized by the corresponding identifier recognition components on the detector, while reducing the interference from other identifier components on the detector.

[0023] In a further technical solution, the test card can be inserted into the test channel when the door is opened, and the insertion of the test card into the test channel is blocked when the door is closed. The detection assembly further includes an elastic element, which is used to drive the door to close. When the second motor rotates forward, it is used to drive the door to open, and when it rotates backward, it is used to offset part of the resilience of the elastic element during the closing process of the door. Thus, the function of preventing pinching can be achieved.

[0024] As a further improvement of the present invention, the detection assembly further includes a robotic arm, and the door includes a stop block; when the second motor rotates forward, it drives the robotic arm to move forward, and the robotic arm unidirectionally pushes the stop block forward in a preset direction to open the door; when the second motor rotates backward, it drives the robotic arm to move backward, and the robotic arm blocks the stop block and offsets part of the resilience of the elastic element to close the door.

[0025] As a further improvement of the present invention, the door includes a horizontal part and a vertical part extending downward from the edge of the horizontal part. The vertical part is an arc consistent with the outer curvature of the turntable. The vertical part is close to the outer periphery of the turntable. The stop block is located on the upper surface of the horizontal part of the door, and the robotic arm is located above the horizontal part of the door. Driven by the second motor, the end of the robotic arm can move reciprocally.

[0026] As a further improvement of the present invention, the stop block includes a non-closed enclosure structure, and the end of the robotic arm extends to one side of the non-closed enclosure structure and the end of the robotic arm can freely enter and exit from the open side of the non-closed enclosure without being blocked.

[0027] As another improvement of the present invention, the detection assembly includes a robotic arm, and the door includes a groove. The end of the robotic arm extends into the groove; when the second motor rotates forward, it drives the robotic arm to move forward, and the end of the robotic arm pushes a proximal side wall of the groove to open the door; when the second motor rotates backward, it drives the robotic arm to move backward, and the end of the robotic arm blocks the proximal side wall of the groove and offsets part of the resilience of the elastic element to close the door.

[0028] As a further improvement of the present invention, the groove is an arc-shaped groove, the proximal side wall of the groove close to the end of the robotic arm is closed, and the distal side wall of the groove away from the end of the robotic arm can be either closed or non-closed.

[0029] As a further improvement of the present invention, one end of the elastic element is fixed and the other end is connected to the door. During the process of the second motor rotating forward to drive the robotic arm to open the door in a preset direction, the elastic deformation amount of the elastic element gradually increases to store energy. When the second motor rotates backward to drive the robotic arm, the elastic element gradually rebounds to drive the door to close, and the robotic arm abuts against the stop block or the proximal side wall of the groove and offsets part of the resilience of the elastic element.

[0030] As a further improvement of the present invention, the elastic element includes a tension spring, a compression spring, a leaf spring, a torsion spring, and a rubber band.

[0031] As a further improvement of the present invention, during the process that the second motor drives the robotic arm to open the door in a preset direction, the elastic element is gradually stretched; when the second motor drives the robotic arm in the reverse direction, the elastic element gradually contracts to drive the door to close.

[0032] As a further improvement of the present invention, the detector further includes two fixed opto-couplers, which respectively correspond to the positions of the stoppers on the door when the door is fully closed and fully opened. When the stoppers pass through these two opto-couplers respectively, the opto-couplers send signals indicating that the door is fully closed or fully opened to the control system of the detector.

[0033] In a further technical solution, the detector further includes a third motor. The first motor is used to drive the turntable to rotate and then drive the plurality of test channels to rotate. The second motor is used to open the door to facilitate inserting the test card into the test channel. The third motor is used to eject the tested test card from the turntable. At least one pair of process grooves are provided on two opposite side walls of the test channel. The detector further includes a slider. When a certain test card is tested, the turntable rotates and conveys the test card to an initial position close to the slider. The third motor starts and drives the slider to push the tested test card out of the test channel from its initial position, and then the slider returns to the initial position. The lengths of two sides of the slider are greater than the lengths of the process grooves on two opposite side walls of the test channel, so that the slider will not be stuck in the process grooves when sliding in the test channel. This can effectively avoid the technical problem that the test card is stuck in the test channel due to reasons such as accidental power-off, resulting in detector failure.

[0034] The present invention has the following beneficial effects: 1. The detector of the present invention realizes multi-channel testing, improving the testing speed; 2. The detector has eight testing channels, enabling the simultaneous detection of eight identical or different samples. One detector realizes all the functions of eight single-channel detectors, greatly improving the detection efficiency, reducing the cost of purchasing detectors, reducing the space occupied by the instruments, saving the site cost, and only requiring one person to operate, thus also saving the labor cost. Therefore, it has the advantage of low detection cost; 3. Any one of the eight testing channels of the detector of the present invention can be used for emergency testing, so it is also applicable to the testing rooms in the emergency departments of hospitals, with a wide range of applications; 4. The detector of the present invention can intelligently and automatically identify the identification information on the test card (this information includes information corresponding to the test sample or test item), then set the corresponding incubation time for each inserted test card according to this information, and automatically perform a countdown. When a certain test card reaches the incubation time, the detector automatically transfers the test card to the detection block area for detection. Therefore, this detector is applicable to the detection of identical or different samples or test items, greatly expanding the scope of application of the analyzer; 5. Since the detector of the present invention has an automatic card pushing mechanism, it can automatically push the test card that is not inserted to the bottom to the bottom, making it reach the area defined by the detector, so the success rate of the detection results is high; 6. The detector of the present invention has an anti-pinch mechanism to prevent the operator's fingers from being pinched by the tester during the operation, avoiding the occurrence of medical accidents. The structure of the present invention is simple, with low cost and few faults; 7. The detector of the present invention has a locking mechanism that locks the turntable of the detector when the door is opened, effectively preventing the turntable from rotating accidentally, and solving technical problems such as difficult insertion of the test card due to inaccurate turntable positioning and affecting the normal progress of the detection; 8. When the detector of the present invention ejects the test card after the detection is completed, it effectively solves the technical problem that the test card is easily stuck in the analysis test channel due to accidental power failure or other reasons, greatly reducing the failure rate of the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a three-dimensional external view schematic diagram of the detector of the present invention.

[0036] Figure 2 is a three-dimensional schematic diagram of the detector of the present invention after removing the outer shell.

[0037] Figure 3 is Figure 2 a partial enlarged schematic diagram in [Figure number], with the door in a fully closed state.

[0038] Figure 4 is a three-dimensional schematic diagram of the detector of the present invention after removing the upper shell and some components.

[0039] Figure 5 isFigure 4 Partial enlarged schematic diagram in the middle.

[0040] Figure 6 It is a top plan view schematic diagram of the detector of the present invention after removing the housing. The test card is not inserted into the correct position and the door is in the open state.

[0041] Figure 7 It is another top plan view schematic diagram of the detector of the present invention after removing the housing. The door is in a state where it is blocked by the test card and cannot be fully closed.

[0042] Figure 8 It is another top plan view schematic diagram of the detector of the present invention after removing the housing. The door is in a state where it is not blocked by the test card but has not been fully closed yet.

[0043] Figure 9 It is another top plan view schematic diagram of the detector of the present invention after removing the housing. The door is in the fully closed state and the test card moves to just touch the automatic test card pushing mechanism.

[0044] Figure 10 It is Figure 9 Partial enlarged schematic diagram in the middle.

[0045] Figure 11 It is another top plan view schematic diagram of the detector of the present invention after removing the housing. The test card is in a state where it is pushed to the correct position by the automatic test card pushing mechanism.

[0046] Figure 12 It is Figure 11 Partial enlarged schematic diagram in the middle.

[0047] Figure 13 It is another top plan view schematic diagram of the detector of the present invention after the test card moves past the automatic test card pushing mechanism.

[0048] Figure 14 It is a three-dimensional external appearance schematic diagram of the test card.

[0049] Figure 15 It is a three-dimensional schematic diagram of the present invention after removing the housing. The door is in the fully open state.

[0050] Figure 16 It is Figure 15 Partial enlarged schematic diagram in the middle.

[0051] Figure 17 It is of the present invention Figure 15 Schematic diagram of another implementation manner of the illustrated embodiment.

[0052] Figure 18 It is a cross-sectional view of the detector of the present invention after removing the housing and some components. The door is in the fully open state.

[0053] Figure 19 is Figure 18 the partially enlarged schematic view in

[0054] Figure 20 is the perspective schematic view of the detector of the present invention after removing the housing and some components, with the door in the fully closed state.

[0055] Figure 21 is Figure 20 the partially enlarged schematic view in

[0056] Figure 22 is the cross-sectional view of the detector of the present invention after removing the housing and some components, with the door in the fully closed state.

[0057] Figure 23 is Figure 22 the partially enlarged schematic view in

[0058] Figure 24 is the perspective schematic view of the detector of the present invention after removing the housing, with the card ejection mechanism in the card ejection state.

[0059] Figure 25 is Figure 24 the partially enlarged schematic view in

[0060] Figure 26 is Figure 24 the perspective schematic view of another embodiment of the embodiment.

[0061] Figure 27 is Figure 26 the partially enlarged schematic view in

[0062] Figure 28 is Figure 24 or Figure 26 the schematic view of the detector of the shown embodiment after completing card ejection and returning to the initial state.

[0063] Figure 29 is Figure 28 the partially enlarged schematic view in

[0064] Figure 30 is Figure 27 the schematic view of another embodiment of the embodiment.

[0065] Figure 31 is the perspective schematic view of another angle of the present invention after removing the housing.

[0066] Figure 32 is Figure 31 the partially enlarged schematic view in Detailed implementation manners

[0067] The following further describes the structures involved in the present invention or the technical terms used therein. In the following detailed description, the reference numerals attached to the legends are a part here, which illustrate in a way of specific embodiments in which the present invention may be implemented. We do not exclude that the present invention can also implement other specific embodiments and change the structure of the present invention without departing from the scope of use of the present invention.

[0068] As Figure 1-13 shown, the detector 1 includes a base 10, an upper shell 20 cooperating with the base, and a detection component 30 (refer to Figure 2 ), wherein the base and the upper shell are combined into a housing 40, and the detection component is fixed inside the housing. The upper shell 20 includes an insertion port 210, a display screen 220, and a printing port 230. One side of the base 10 is provided with a collection box 110 for collecting the test card 120 after the test is completed ( Figure 4 ). In a preferred embodiment, the collection box 110 is assembled to the base 10 in the form of a drawer and can be pulled out from the base.

[0069] Figure 2 - Figure 13 shows the structure and working mode of the detection component 30. The detection component 30 includes a transfer module 310, a test module 350, and an ejection module 380. The transfer module is used to transfer the test card 120 from the position of the insertion port 210 to the detection position, and then transfer the test card to the ejection position after the test is completed. The test module 350 uses the fluorescence immunology method to identify the color signal displayed by the test card 120 after the test is fully completed, and then outputs the test result to the display screen. The ejection module 380 is used to eject the test card after the test is completed into the collection box 110, and then perform environmental protection treatment as biological waste.

[0070] As Figure 4 and Figure 5 shown, the transfer module 310 includes a circular turntable 311, which is driven by a first motor 312 (refer to Figure 2 ) to rotate around its central axis (not shown in the figure). The turntable is provided with a plurality of test channels 313 for placing and fixing the test card 120 respectively. The number of test channels is preferably two, three, four, five, six, eight, ten, etc. (the present invention takes eight as an example for detailed description), and is preferably evenly distributed in a star shape on the turntable, so that the included angle between adjacent two test channels is equal, and a region similar to a regular polygon is formed at the center position of the turntable. A convex block 329 is provided at the end of each test channel in this polygonal region (please refer to Figure 5 , and its function will be described later). As Figure 2As shown, there is a door 314 above the turntable 311. The door 314 can rotate reciprocally clockwise or counterclockwise around the central axis of the turntable, thereby opening or closing the door. When the door is open, there is just an empty test channel (referred to as "the first test channel") at the insertion port 210. At this time, the first test card 120 can be inserted, and then the door is closed. The turntable rotates, and after the first test card is removed from the insertion port, incubation is carried out ("incubation" means allowing the biological sample on the test card to fully react with the reagents on the test card within a suitable temperature range until a color signal or other signal recognizable by the detector appears in the detection area of the test card). Then, the second test channel is transferred to the insertion port. The door is opened, and after the second test card is inserted, the door is closed again. The turntable rotates, and after the second test card is removed from the insertion port, incubation is carried out. Then, the third test channel is transferred to the insertion port. The door is opened, and after the third test card is inserted, the door is closed. Such operations are repeated until all test channels are placed and fixed with test cards. As Figure 14 shown, the test card 120 has symbols (such as one or more two-dimensional codes or barcodes or a combination of two-dimensional codes and barcodes, etc., preferably three two-dimensional code identifiers 121, 122, and 123 in the present invention) for identifying information of the test card (such as test items, minimum incubation time, manufacturer, shelf life, production batch, etc.). The test module 350 reads these symbol information and transmits these symbol information to the control system of the detector. The control system determines when to transfer the corresponding test card to the corresponding detection position according to the minimum incubation time required for each test card, and the test module starts and detects the color signal or other signals on the test card. The structure of the test card other than the identification symbols and the working mode of the test module belong to the prior art and will not be elaborated here.

[0071] The detector 1 of the present invention is applicable to test cards of the same detection type (that is, several test cards successively placed on the test channel 313 are all test cards for detecting the same item, and their minimum incubation time required in the detector is the same. Therefore, they are sequentially detected by the test module in the order of the insertion time of the test cards, so as to shorten the average incubation waiting time of each test card, thereby increasing the detection efficiency by several times), and is also applicable to test cards of different detection types (for example, some are test cards for detecting item A, and some are test cards for detecting items B, C, D, etc., and even the detection items of the test cards placed in each test channel are different, but the outer dimension specifications and structures of the test cards should be the same). At this time, the minimum incubation time required for test cards of different detection items may be different. At this time, the control system will identify the symbol information (such as two-dimensional code) on each test card by the detection component 30 to determine the minimum incubation time required for it, and then send these test cards to the detection position in turn according to the order of reaching the minimum incubation time for detection by the detection module. Therefore, the detector of the present invention has better versatility, that is, one detector can complete the detection of multiple different detection items, so as to achieve the effect of "one machine with multiple functions". In this way, it not only greatly reduces the cost of purchasing multiple different types of detectors, but also greatly saves the operation space required for placing multiple detectors in the laboratory, avoiding waste. The reason why the present invention can achieve "one machine with multiple functions" is that for different detection items, except that the immunochromatographic reagents on the test strips of the test cards are different, the outer dimension specifications and structures of the test cards are the same, and the test results of the test cards are all presented by showing colors (including the depth of the colors) or color changes in the detection area of the test cards, and the detector's recognition method for colors (including the depth of the colors) is exactly the same. The structure of the test card 120 except for the identification symbol and the content of the internal test strip thereof belong to the prior art and will not be elaborated here.

[0072] As described above, when the door 314 is opened, the control system of the detector moves a certain test channel 313 exactly to the position opposite to the insertion port 210, and at this time, it is suitable to insert the test card. As Figure 2 - Figure 5As shown, the test channel 313 has a slide rail structure, with at least one hole 338 opened at its bottom. An arched elastic piece 339 is installed in each hole, and the top of the arched elastic piece protrudes from the bottom surface of the test channel. At least one process groove 337 is respectively opened on two opposite side walls of the test channel to facilitate the manufacture of the turntable. Except for the process grooves, the top of the test channel is provided with a top 340 extending a proper distance from two opposite side walls of the test channel towards each other. The arched elastic piece has any structure with a high middle and low ends, such as an arc shape, an arch shape, a trapezoid, an inverted "V" shape, etc. When the detection card 120 is inserted into the test channel 313, the two side walls of the test channel act as slide rails to guide the insertion of the detection card, and the arched elastic pieces in the test channel push the detection card upwards, making the upper surface of the detection card abut against the top 340 of the test channel, so as to accurately position the detection card. When the detection card is continuously inserted until the front end of the detection card abuts against the bump 329 at the end of the test channel (as Figure 4 shown), it means that the detection card has been inserted to the bottom.

[0073] If the detection card is inserted too shallowly so that the end of the detection card stays at a position far from the central axis of the turntable 311 (as Figure 6 shown), then when the door is to be closed, the outer edge of the door will be blocked by the end of the detection card (as Figure 7 shown), so that the door cannot be completely closed. The control system of the detector prevents the turntable 311 from rotating. At this time, the display screen 220 will prompt "Please push the detection card to the bottom" or give a voice prompt "Please push the detection card to the bottom".

[0074] The present invention has an automatic card pushing mechanism that automatically pushes the detection card 120 to the bottom (i.e., the required position for detection). If the detection card is inserted deep enough but still not completely inserted to the bottom, for example, the end of the detection card does not exceed the inner side of the outer edge of the door 314, so that the end of the detection card will not prevent the door from closing (as Figure 8 shown), at this time, the control system of the detector will not prevent the turntable from rotating ( Figure 8 shown as rotating counterclockwise), and the turntable drives the detection card to rotate around the central axis of the turntable. As Figure 6 - Figure 13As shown in the figure, the present invention provides an automatic card pushing mechanism 315 at a suitable position on the outer periphery of the turntable, which is used to automatically push the test card that has not been fully inserted to the bottom and firmly fix the test card in the test channel 313, so as to accurately position the test card on the turntable, which is more conducive to the test module 350 to detect the color (showing the background color when no substance to be detected is detected, and showing a color different from the background color when a substance to be detected is detected) or color change (changing from the color before the start of detection to another color after the detection is completed) displayed on the detection area of the test card. Since the position of the test module 350 is fixed, if the test card is not fully inserted to the bottom, the color area displayed on the detection area of the test card may not be aligned with the position required by the test module, resulting in the test module being unable to accurately identify the color signal of the detection area of the test card, and further causing the detector to be unable to give a detection result or an accurate detection result, leading to a detection failure. This is obviously a problem that needs to be overcome with great efforts.

[0075] As Figure 9 - Figure 13 shown, the automatic card pushing mechanism 315 includes an inclined surface 316. When the test card 120 is driven by the turntable until the end (tail) edge of the test card touches the inclined surface 316, the inclined surface applies a force to push the test card to slide in the test channel towards the central axis of the turntable, so as to automatically insert the test card to the bottom (the position required for detection), align the detection area of the test card with the position required by the test module, and facilitate the test module to accurately identify the color or color change of the detection area of the test card. In a preferred embodiment, the automatic card pushing mechanism 315 includes a spring piece with one end fixed and the other end free. When the end of the test card touches the spring piece, the spring piece is squeezed by the end of the test card and undergoes elastic deformation, and the spring piece applies a reaction force to the end of the test card, thereby pushing the test card to the bottom, aligning the detection area of the test card with the position required by the test module, and facilitating the test module to accurately identify the color or color change of the detection area of the test card. As Figure 2 and Figure 10 shown, the automatic card pushing mechanism 315 is fixed to the outer periphery of the turntable 311 by a support frame 317, and the support frame also plays a role in preventing the opening amplitude of the blocking door 314 from being too large.

[0076] When the first test card continues to rotate counterclockwise after passing through the automatic card pushing mechanism, and then the first test card passes through the first, second, and third test card symbol recognition devices 318, 319, and 320 in sequence (please refer to Figure 2), the three symbols (preferably two-dimensional barcodes) on the first test card are sequentially recognized, and then the recognized information is transmitted to the control system of the detector. The control system determines the test items of the first test card and the required incubation time based on this, and then starts the incubation countdown. When the incubation time ends, the first test card is immediately transferred to the area required by the test module 350 for testing. After the test is completed, the control system transmits the test result to the display screen for display. At the same time, the turntable transfers the first test card to the ejection module 380, and this ejection module ejects the first test card into the collection box 110. When the collection box has received enough test cards, the test cards are treated as biological waste in an environmentally friendly manner. Other test cards are also detected by the detector in the above manner, and the test cards are treated as biological waste in an environmentally friendly manner after the test is completed. In this way, the average incubation waiting time of each test card is shortened, and the test efficiency is improved.

[0077] Please refer to Figure 14 , at appropriate positions on the upper surface of each test card 120, there are respectively included identifiers corresponding to its biological parameter test items. The detector has a component for recognizing the identifiers on the test card, and the detector assigns incubation parameters corresponding to the identifier information to each test card according to the recognized information. In a preferred embodiment, the identifiers on the test card 120 include three two-dimensional barcode identifiers 121, 122, and 123, and each two-dimensional barcode corresponds to a piece of information. After arranging and combining the information of these three two-dimensional barcodes, multiple groups of information can be obtained.

[0078] Such as Figure 2 , Figure 3 , Figure 15 and Figure 16 shown, the present invention further includes an anti-pinch mechanism during the closing process of the door. This anti-pinch mechanism includes a robotic arm 321, a stop block 322, and an elastic element 323. The elastic element includes a tension spring, a compression spring, a spring sheet, a torsion spring, a rubber band, etc., which are well-known elastic elements in the art. The function of the elastic element is to return the door from the open state to the closed state. The robotic arm 321 is driven by a second motor 333 to reciprocally swing in a certain angular range in the counterclockwise or clockwise direction around a certain base point. One end of the robotic arm is a free end 324. When the robotic arm swings in the counterclockwise direction, this free end pushes the stop block 322 to rotate in the counterclockwise direction as well, and the stop block drives the door to rotate in the counterclockwise direction, thereby opening the door 314. Preferably, the stop block and the door are integrally formed or separately manufactured and then fixedly connected to the door, so that the stop block and the door move synchronously. More preferably, the stop block protrudes above the door and can abut against the free end 324 of the robotic arm. Such as Figure 17As shown, in another solution, a sector-shaped track 347 is provided at the top of the door. One track sidewall 348 of the sector-shaped track forms the stop block 322. The free end of the robotic arm bends downward and extends into the sector-shaped track and can reciprocally swing within a certain angular range in the counterclockwise or clockwise direction within the sector-shaped track. However, the free end of the robotic arm can never touch the other relative track sidewall of the sector-shaped track 347. Therefore, the robotic arm 321 cannot push the door to move in the clockwise direction. One end of the elastic element 323 is connected to the base 10 or the bracket of the base and thus cannot move. The other end of the elastic element is connected to the door 314 and can undergo elastic deformation (such as being stretched or compressed) when the door rotates. When the free end 324 of the robotic arm swings in the counterclockwise direction, the free end abuts against the stop block 322 (including the sidewall 348 of the sector-shaped track), thereby pushing the door to rotate in the counterclockwise direction and then opening the door. At this time, the elastic element undergoes elastic deformation and stores the energy to make the door return to the closed state. When the door is opened to the preset maximum angle, the second motor stops, the robotic arm stops swinging counterclockwise, and the door loses the driving force to continue swinging counterclockwise. On the contrary, at this time, the elastic element stores the maximum energy to make the door return to the closed state. Therefore, the door cannot be opened to a larger angle (in addition, the support frame 317 also limits the door from being opened to a larger angle). When the door needs to be closed, the elastic element drives the door to close. The second motor does not directly drive the door to close. On the contrary, the second motor is used to offset part of the pulling force of the elastic element during the closing process of the door, playing an auxiliary role in closing the door to slow down the closing speed of the door and reduce the impact of the door, thereby avoiding pinching the operator's fingers. Specifically, during the closing process of the door, the second motor rotates in reverse (clockwise), causing the robotic arm to lose the thrust to push the stop block to rotate counterclockwise. At this time, the elastic element will pull the door to rotate in the clockwise direction due to the recovery of deformation (also known as "rebound"). Since the reverse rotation speed of the second motor is controlled to be relatively slow, under the pulling force of the elastic element, the stop block still abuts against the free end of the robotic arm. Therefore, the rebound speed of the elastic element will become relatively gentle, and the closing speed of the door will also become relatively gentle, effectively avoiding the door from generating a large impact and pinching the operator's fingers. If there is no second motor and only the elastic element is relied on to close the door, then the resilience of the elastic element may be relatively large, and the closing speed of the door will be relatively fast, generating a large impact force. And only after the second motor rotates in reverse can the elastic element rebound and pull the door. Therefore, during the closing of the door, the second motor plays an auxiliary role in reducing the speed. At this time, the elastic element releases energy, gradually reduces the elastic deformation, and pulls or pushes the door back to the closed state.Regardless of the structures of the robotic arm 321 and the stopper 322, the robotic arm can only push the stopper in one direction to rotate counterclockwise, and cannot push the moving stopper in the reverse direction to rotate clockwise (because at this time, the free end of the robotic arm cannot exert a force on the stopper to cause the door to rotate clockwise, but can offset a part of the pulling force of the elastic element and slow down the impact when the door closes). The door rotates clockwise by relying on the driving force generated by the elastic element to restore its deformation, and the second motor rotates in reverse to offset a part of the pulling force of the elastic element. Therefore, during the closing process of the door, even if the operator's finger is clamped by the door, the acting force is not large and will not cause harm to the operator, thus achieving the purpose of preventing pinching. The motor of the present invention is preferably a stepper motor.

[0079] As Figure 2 , Figure 15 and Figure 16 shown, the detector further includes two fixed opto-coupler switches 341 and 342, and these two opto-coupler switches respectively correspond to the positions of the stopper 322 on the door when the door is fully closed ( Figure 2 ) and fully opened ( Figure 15 and Figure 16 ). When the stopper passes through these two opto-coupler switches respectively, the opto-coupler switches send signals to the control system of the detector indicating that the door has been fully closed or fully opened. As Figure 16 shown, in one embodiment, the stopper 322 includes a horizontally extending block 343. When the stopper passes through the opto-coupler switch 341 or the opto-coupler switch 342, the horizontally extending block enters the groove of the opto-coupler switch to cut off the opto-coupler, thereby enabling the opto-coupler switch to send a signal to the control system of the detector indicating that the door has been fully closed or fully opened.

[0080] The present invention further includes a turntable locking mechanism. When the door is opened, this locking mechanism locks the turntable, and the turntable cannot rotate or swing, thus facilitating the accurate insertion of the test card into the corresponding test channel. On the contrary, if there is no locking mechanism, then during the process of inserting the test card into the corresponding test channel on the turntable, the test card may push the turntable to rotate, resulting in difficult insertion or the test card cannot be fully inserted into the corresponding test channel, and further causing the door not to close or the test module cannot accurately detect the color or color change of the test area of the test card, resulting in a detection failure.

[0081] As Figure 4 , Figure 5 , Figure 15 , Figure 16 , Figure 18 - Figure 23 shown, the locking mechanism includes a limit hole 325, a plug 326, a top block 327, and a boss 328. As Figure 4 and Figure 5As shown in the figure, eight test channels 313 are evenly arranged on the upper surface of the turntable 311. These eight test channels spread from the central axis area of the turntable to the outer circumference of the turntable. The included angle between adjacent two channels is equal, about 45 degrees. Each test channel is provided with a bump 329 in the central axis area of the turntable. During the process of inserting the test card into the test channel, when the front end of the test card abuts against the bump 329, the bump prevents the test card from being inserted deeper, indicating that the test card has been inserted in place. Therefore, the bump 329 has the function of prompting that the test card has been correctly inserted. The turntable 311 is evenly provided with a number of limiting holes 325 as described above on the circumference of its central axis area. The number of limiting holes is equal to the number of test channels 313 on the turntable. Each limiting hole corresponds to a test channel and is distributed in the middle position of the corresponding test channel terminal. As Figure 18 - Figure 21 As shown in the figure, the locking mechanism further includes a convex platform 328 located on the top surface of the door 314 and a top block 327 cooperating with the convex platform. The convex platform and the top block are respectively provided with mutually cooperating inclined surfaces 330. When the door is opened or closed, the door 314 drives the convex platform 328 to rotate. The inclined surface 330 of the convex platform pushes the top block 327 to move up and down. The top block is fixedly connected to a latch 326 that can move up and down synchronously with the top block. A spring 331 is sleeved on the middle part of the latch. During the process of opening the door, the door rotates counterclockwise, driving the convex platform at the top of the door to rotate counterclockwise together. The top block loses the supporting force of the inclined surface of the convex platform. Under the squeezing force of the spring 331, the top block 327 and the latch 326 move downward along the guide post 344 together, so that the bottom end of the latch is inserted into the limiting hole 325 on the turntable. And the top block and the latch are restricted to move only in the vertical direction and cannot move in the horizontal direction (the movement of the top block and the latch in the horizontal direction is restricted by the guide post 344 fixed to the base bracket). In this way, the latch 326 restricts the rotation of the turntable, achieving the purpose of locking the turntable. On the contrary, during the process of closing the door, as Figure 20 - Figure 23 As shown in the figure, the clockwise rotation of the door drives the convex platform 328 to rotate clockwise. The inclined surface 330 of the convex platform pushes the top block 327 up against the resistance generated by the compression of the spring 331. Under the guiding action of the guide post 344, the top block together with the latch 326 inside the top block is lifted upward, so that the bottom of the latch is disengaged from the limiting hole 325 on the turntable. At this time, the rotation of the turntable is no longer restricted, thus achieving the purpose of unlocking. To sum up, the locking mechanism locks the turntable when the door is fully opened, making the turntable accurately positioned, facilitating operations such as inserting the test card, etc.; when the door is fully closed, the locking mechanism unlocks the turntable, enabling the turntable to operate normally, thus not affecting the normal operation of the detector of the present invention.

[0082] The present invention also discloses a card ejection mechanism for ejecting the test card 120 after the test from the test channel 313 into the collection box 110. As Figure 24 - Figure 29As shown, the card ejection mechanism includes a third motor 346 fixed on the base bracket 332, a belt 334 driven by the third motor, and a push block 335 fixedly connected to the belt. The belt 334 is preferably a toothed belt or a chain to facilitate the accurate transmission of the stroke of the third motor, and the push block 335 moves synchronously with the belt. The push block 335 includes a slider 336, which is driven by the third motor via the belt to reciprocate in the test channel 313, so as to eject the test card out of the test channel into the collection box after the detection is completed. In order to make the mold for producing the turntable easier to open, at least a pair of process grooves 337 (the present invention preferably has two pairs, three pairs or four pairs of process grooves) are provided at appropriate positions on the two opposite side walls of the test channel 313 on the turntable. In one solution, the process groove penetrates the thickness of the turntable, and in another solution, the process groove does not penetrate the thickness of the turntable.

[0083] If the detector suddenly loses power during the card ejection process, and when the power is lost, the slider 336 is exactly located at the position of the process groove 337 ( Figure 24 and Figure 25 ), when the detector is powered on again or the turntable that was originally stationary rotates a little due to collision or other situations of the detector, causing the bottom of the slider 336 to get stuck in the process groove 337, the slider cannot move, and thus the test card cannot be ejected into the collection box. To prevent the above situation from occurring, as Figure 26 and 27 shown, the length of the bottom of the slider 336 is designed to be greater than the length of the process groove 337 in the present invention. In this way, even if the slider is exactly located at the position of the process groove when the power is off, the slider will not be stuck in the process groove, so the slider can still slide in the test channel and eject the test card into the collection box. To facilitate the smooth sliding of the slider in the test channel, the head and tail of the slider are rounded or chamfered, and the two ends of the process groove are also rounded or chamfered, so as to further reduce the probability of the slider being stuck in the process groove of the channel. Any pair of the above process grooves are arranged face to face ( Figure 25 and Figure 27 ) or alternately offset ( Figure 30 ) on the opposite side walls of the test channel. As Figure 24 - Figure 27 shown, if a pair of process grooves are arranged face to face, the two side edges of the bottom of the slider intersect with this pair of process grooves at the same time (the side edges of the bottom of the slider overlap or partially overlap with the process groove). At this time, during the sliding process of the slider, the head of the bottom of the slider loses guidance and may enter the process groove and be stuck by the process groove. If a pair of process grooves are arranged alternately offset ( Figure 30), so that the two side edges at the bottom of the slider do not intersect with this pair of process grooves simultaneously (the two side edges at the bottom of the slider do not overlap or partially overlap with this pair of process grooves). At this time, during the sliding process of the slider, only one side edge at the bottom of the slider loses the guiding of one side wall of the test channel due to intersecting with the process groove, but the other side edge at the bottom of the slider can still be guided by the other side wall of the test channel, thus further reducing the probability of the slider being stuck by the process groove. In this embodiment, as Figure 30 shown, the tops 340 of the test channels are also arranged alternately with each other, so that the top 340 of one side wall of the test channel faces the process groove 337 on the opposite side wall of the test channel, which can further reduce the risk of the bottom of the slider 336 being stuck by the process groove. After the card ejection mechanism ejects the test card after the detection from the test channel into the collection box, the card ejection mechanism automatically returns to the initial position, ready to be used to eject the next detected test card conveyed to the card ejection position ( Figure 28 and Figure 29 ).

[0084] As Figure 14 shown, the test card includes an upper cover and a lower plate combined with each other, a test strip is installed between the upper cover and the lower plate, and the upper cover includes a sample addition port and an observation window. Three two-dimensional codes are printed on the upper cover of the test card. Among them, the first two-dimensional code identifier 121 and the second two-dimensional code identifier 122 are located upstream of the sample addition port, and the third two-dimensional code identifier 123 is located between the sample addition port and the observation window. These three two-dimensional codes correspond to information A, B, and C respectively. Then there are 3×3 = 27 combinations of these three two-dimensional codes. Each combination can correspond to a detection item. Then the combinations of these three two-dimensional codes can correspond to twenty-seven detection items.

[0085] As Figure 31 and Figure 32 shown, three scanning windows 501, 502, and 503 are opened on the door. During the process of the turntable driving the test card to rotate, these three scanning windows can respectively correspond to the three two-dimensional code identifiers 121, 122, and 123 of the test card. Three identifier recognition devices 318, 319, and 320 (preferably general two-dimensional code scanning devices) are respectively installed above the three scanning windows. The three identifier recognition devices perform scanning through the scanning windows arranged at staggered angles on the door, which can reduce the mutual interference during the scanning process and prevent mis-scanning due to the scanning windows being too close (the three two-dimensional codes respectively correspond to the positions of three test channels, and the scanning devices are also correspondingly installed at three positions. The three two-dimensional codes are separated by the door and do not interfere with each other, and no mis-scanning will occur).

[0086] The detection system of the present invention includes a detector 1 and a test card 120. The detector includes a housing 40 and a detection component 30 inside the housing. The housing includes an insertion port 210 for inserting the test card into the detector for detection. The detection component 30 includes a transfer module 310, a test module 350, and an ejection module 380. The transfer module includes a circular turntable 311. There are eight test channels 313 provided on the turntable. The test channels are evenly distributed in a star shape on the turntable. One end of each test channel is close to the center of the turntable and the other end extends to the outer periphery of the turntable. Each test channel can insert a test card. There are three identifiers 121, 122, and 123 on the test card. The detection component includes identifier recognition components 318, 319, and 320 (preferably general QR code scanning devices) equal in number to the identifiers on the test card. During the process of the turntable transferring the test card, these identifier recognition components sequentially recognize the identifiers on the test card to form a signal combination and transmit it to the control system of the detector. The signal combination at least includes the minimum incubation time of the test card. After the test card starts to incubate in the detector, the control system of the detector starts to count down for each test card according to the minimum incubation time of each test card and transfers each test card to the test module for detection in the order of the countdown end. The test module outputs a detection result after recognizing the detection signal on the test card. After the detection is completed, the ejection module ejects the tested test card from the test channel.

[0087] The three identifiers on the test card are QR codes, barcodes, or a combination of QR codes and barcodes. The identifier recognition components on the detection component are staggeredly arranged in space. During the process of the turntable transferring the test card, the first identifier component on the detection component recognizes the first identifier on the test card, and then the second identifier component on the detection component recognizes the second identifier on the test card, and so on, until all the identifiers on the test card are recognized. The three identifiers on the test card also include information corresponding to the detected biological parameters. The detector can be applicable to test cards for detecting the same biological parameter items or test cards for detecting different biological parameter items. The detector sets the minimum incubation time according to the detected biological parameters included in the identifiers on each test card. The detector also includes a door that can rotate relative to the turntable. There are windows 501, 502, and 503 on the door that are equal in number to the identifiers on the test card and whose positions correspond to the positions of the identifier recognition components on the detector. When the detector recognizes the identifiers on the test card, these windows enable the identifiers on the test card to be recognized by the corresponding identifier recognition components on the detector, while reducing the interference from other identifier components on the detector.

Claims

1. A detector with a locking mechanism, characterized in that: The detector includes a circular turntable, a door located above the turntable and rotatable relative to the turntable, a first motor and a second motor. A plurality of test channels extending from the central area of the turntable to the outer periphery of the turntable are provided on the turntable. A test card can be inserted into each test channel. The turntable is driven by the first motor to rotate, thereby driving the plurality of test channels to rotate. The second motor is used to open the door. The detector further includes a locking mechanism. The locking mechanism includes a limiting hole on the turntable, a guide post fixed to the detector base or the base bracket and immovable, a convex platform on the top surface of the door, a top block cooperating with the convex platform, and a latch fixedly connected to the top block and capable of moving up and down synchronously with the top block. A spring is sleeved on the middle part of the latch. The top block and the latch are restricted by the guide post to move only up and down in the vertical direction. The convex platform and the top block are respectively provided with mutually cooperating inclined surfaces. When the door is in the process of opening or closing, the door drives the convex platform to rotate counterclockwise or clockwise. The inclined surface of the convex platform pushes the top block to move up and down. Under the squeezing force of the spring, the top block and the latch move up and down along the guide post together, so that the bottom of the latch is inserted into or disengaged from the limiting hole on the turntable, thereby locking or unlocking the turntable. When the door is in the open state, the first motor stops driving the turntable to rotate, and the locking mechanism automatically locks the turntable to prevent the turntable from rotating. When the door is in the closed state, the locking mechanism automatically releases the turntable, and the first motor drives the turntable to rotate.

2. The detector with a locking mechanism as claimed in claim 1, wherein: During the opening process of the door, the door drives the convex platform to rotate together. The inclined surface on the convex platform and the inclined surface on the top block are gradually separated. The top block gradually loses the support of the convex platform, and the compressed spring stretches to push the latch and the top block to slide vertically downward, so that the bottom end of the latch is inserted into the limiting hole on the turntable, locking the turntable and thus restricting the rotation of the turntable. On the contrary, during the closing process of the door, the door drives the convex platform to rotate in the opposite direction. The inclined surface on the convex platform fits with the inclined surface on the top block, pushing the top block to move vertically upward, lifting the top block, and pushing the latch in the top block to lift upward, so that the bottom of the latch is disengaged from the limiting hole on the turntable, thereby unlocking the turntable, making the rotation of the turntable no longer restricted, and at the same time, the compressed spring sleeved on the middle part of the latch is further compressed.

3. The detector with a locking mechanism according to claim 1, wherein: An automatic card pushing mechanism is provided at a suitable position on the outer periphery of the turntable of the detector. After the detector starts the detection, the turntable drives the test card to rotate. When the test card reaches the position where the automatic card pushing mechanism is located, the automatic card pushing mechanism automatically pushes the test card that has not been inserted to the required position for detection into the required position in the test channel, so that the test card is accurately positioned in the test channel.

4. The detector with a locking mechanism according to claim 3, wherein: The test channel is of a slide rail type structure. At least one hole is opened at the bottom of the test channel, and an arched elastic piece is installed in each hole. The top of the arched elastic piece protrudes from the bottom surface of the test channel. The test channel is provided with a top extending a proper distance from the two opposite side walls of the test channel. When the test card is inserted into the test channel, the two side walls of the test channel act as slide rails to guide the test card to be inserted. The arched elastic piece in the test channel pushes the test card upward, so that the upper surface of the test card abuts against the top of the test channel, thereby accurately positioning the test card.

5. The detector with a locking mechanism according to claim 3, characterized in that: The automatic card pushing mechanism includes an inclined surface facing the outer periphery of the turntable. When the turntable drives the test card past this inclined surface, the inclined surface squeezes the tail of the test card, and the inclined surface pushes the test card to move in the test channel towards the center of the turntable until the test card is inserted into the required position for detection.

6. The detector with a locking mechanism according to claim 3, wherein: The automatic card pushing mechanism includes a shrapnel, and the shrapnel includes an inclined surface facing the outer periphery of the turntable. When the turntable drives the test card past this inclined surface, the inclined surface squeezes the tail of the test card, thereby pushing the test card to move in the test channel towards the center of the turntable until the test card is inserted into the required position for detection.

7. The detector with a locking mechanism according to claim 3, characterized in that: The turntable is provided with a bump at the end of each test channel. During the process of the test card being inserted into the test channel, when the head of the test card is blocked by this bump, it means that the test card has been inserted into the required position for detection.

Images