Test tube feeding mechanism

Abstract

The utility model discloses a test tube sample introduction mechanism relates to sample detection technical field, wherein, test tube sample introduction mechanism includes sample introduction door, is equipped with sample introduction window, turns over the door, is located in sample introduction window, and turns over the door with sample introduction door rotation connection to open or close sample introduction window, reset subassembly is used for connecting turns over the door and sample introduction window to make turns over the door have the tendency of keeping closing sample introduction window, support seat is used for carrying test tube, abuts structure, protruding is located in the side of support seat towards sample introduction door, and drive subassembly is with support seat drive connection, and drive subassembly is used for driving support seat moves along the first direction, makes abuts structure contact turns over the door, and drives turns over the door to rotate to open sample introduction window, abuts structure is driven by drive subassembly and is away from turns over the door, and turns over the door is driven by reset subassembly and rotates to close sample introduction window. The utility model provides technical scheme can realize the automatic opening and closing of turns over the door, reduces manufacturing cost, reduces the space occupied.

Description

Technical Field

[0001] This utility model relates to the field of sample detection technology, and in particular to a test tube sample injection mechanism. Background Technology

[0002] In some automated analytical instruments and chromatographs, an important step is to load the test tube containing the sample into the analytical system. In the sample injection mechanism of existing equipment, the sample gate mostly requires an independent drive motor to perform its opening and closing action, which increases the manufacturing cost, and the complex structure also increases the space occupied, which is not conducive to miniaturization and compact design. Utility Model Content

[0003] The main purpose of this invention is to propose a test tube injection mechanism that aims to solve the current technical problems of complex injection structures, high costs, and large space occupation.

[0004] To achieve the above objectives, the test tube injection mechanism proposed in this utility model includes:

[0005] The sample inlet gate is equipped with a sample inlet window;

[0006] A hinged door is provided at the sample inlet window, and the hinged door is rotatably connected to the sample inlet door to open or close the sample inlet window;

[0007] A reset component is used to connect the flap door and the sample inlet window so that the flap door tends to keep the sample inlet window closed;

[0008] Support base, used to hold the test tube;

[0009] The abutment structure protrudes from the side of the support base facing the sample inlet gate; and

[0010] A driving component is driven to the support base. The driving component is used to drive the support base to move along a first direction, so that the abutment structure contacts the flip door and drives the flip door to rotate to open the sample injection window; the abutment structure moves away from the flip door under the drive of the driving component, and the flip door rotates under the drive of the reset component to close the sample injection window.

[0011] In one embodiment, the reset component is configured as a torsion spring, which connects the sample inlet door and the flap door.

[0012] In one embodiment, the sample inlet gate is provided with a clearance groove, which is located above the sample inlet window.

[0013] In one embodiment, the abutment structure includes a support rod and an abutment protrusion. The support rod is located at the lower end of the support base facing the sample inlet gate and extends downward. The abutment protrusion is located at the end of the support rod away from the support base and protrudes towards the sample inlet gate.

[0014] In one embodiment, the test tube has a bottom cap at its lower end, and the support base has a through hole at its lower end. The lower end of the test tube passes through the through hole and protrudes from the support base, and the bottom cap protrudes from the through hole. The test tube injection mechanism further includes a cap removal assembly, which includes:

[0015] A base plate is fixedly disposed below the driving assembly. The base plate has a through-hole. The inner diameter of the through-hole is larger than the outer diameter of the cap body and smaller than the outer diameter of the lower end of the cap. The test tube enters the through-hole under the drive assembly, and the through-hole restricts the cap from rising.

[0016] In one embodiment, the notch has an opening on the side facing the injection gate, and the drive assembly drives the support to move away from the injection gate in a first direction, so that the test tube moves through the opening to the notch and the bottom cap is located below the notch.

[0017] In one embodiment, the cap removal assembly further includes a collection bucket located below the notch for receiving the bottom cap that detaches from the test tube.

[0018] In one embodiment, the cap removal assembly further includes a protective cover disposed between the collection bucket and the bottom plate, with both ends of the protective cover communicating with the notch and the collection bucket, respectively, to guide the bottom cap to the collection bucket.

[0019] In one embodiment, the test tube injection mechanism further includes a base, and the driving assembly includes:

[0020] The drive motor is located on the base.

[0021] A synchronous pulley is rotatably mounted on the base, and the output end of the drive motor is connected to the synchronous pulley via a synchronous belt.

[0022] A connecting seat is slidably disposed on the base along a first direction, and the connecting seat is fixedly connected to the timing belt and the supporting seat.

[0023] In one embodiment, the driving assembly further includes a photoelectric switch disposed on the base for detecting the position of the connector.

[0024] In this invention, a sample inlet window is provided on the sample inlet gate, and a hinged door is rotatably installed at the sample inlet window. The hinged door is connected to the sample inlet gate via a reset assembly. A drive assembly and a support base are provided on one side of the sample inlet gate. An abutment structure is provided on the side of the support base facing the sample inlet gate. The drive assembly moves the support base toward the sample inlet gate, causing the abutment structure to contact the hinged door. As the drive assembly drives the hinged door to continuously apply a pushing force, the hinged door rotates relative to the sample inlet gate to open the sample inlet window. The support base moves outside the sample inlet window to receive the test tube. The drive assembly drives the support base to move in the opposite direction, away from the hinged door, releasing the drive on the hinged door. Under the drive of the reset assembly, the hinged door rotates in the opposite direction until the sample inlet window is closed, thus completing the sample inlet process. By setting an abutment structure to first contact the flip door and push it to rotate, the support base is prevented from contacting the flip door first. During the contact with the flip door, the flip door will collide with the test tubes and other samples, thus damaging the test tubes. Through the design of the flip door and sample injection door rotation and the cooperation of the reset component, the entire sample injection mechanism can be automatically closed without the need for additional drive, which reduces manufacturing costs and has a simple structure that occupies less space. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 A schematic diagram of a test tube injection mechanism according to an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of the sample inlet gate in the test tube injection mechanism provided by this utility model;

[0028] Figure 3 A schematic diagram of the flap door in the test tube injection mechanism provided by this utility model;

[0029] Figure 4 A schematic diagram of another embodiment of the test tube injection mechanism provided by this utility model;

[0030] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0031] Figure 6 A schematic diagram of another embodiment of the test tube injection mechanism provided by this utility model.

[0032] Explanation of icon numbers:

[0033] 10. Test tube; 20. Bottom cap;

[0034] 100. Sample inlet gate; 101. Sample inlet window; 102. Clearance groove;

[0035] 200. Flip-up door; 210. Sliding strip;

[0036] 300. Torsion spring;

[0037] 400. Support base;

[0038] 500, abutment structure; 510, support rod; 520, abutment protrusion;

[0039] 600. Drive assembly; 610. Drive motor; 620. Synchronous pulley; 630. Synchronous belt; 640. Connecting base; 650. Connecting block; 660. Photoelectric switch;

[0040] 700. Hat removal assembly; 710. Base plate; 711. Notch; 720. Protective cover;

[0041] 800, base.

[0042] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0044] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0045] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0046] This utility model proposes a test tube injection mechanism.

[0047] Please see Figure 1 and Figure 2 In one embodiment of this utility model, the sample injection mechanism of the test tube 10 includes:

[0048] The sample inlet gate 100 is equipped with a sample inlet window 101;

[0049] A hinged door 200 is provided at the sample inlet window 101. The hinged door 200 is rotatably connected to the sample inlet door 100 to open or close the sample inlet window 101.

[0050] A reset component is used to connect the flap 200 and the injection window 101 so that the flap 200 tends to keep the injection window 101 closed;

[0051] Support base 400 is used to support test tube 10;

[0052] The abutment structure 500 protrudes from the support base 400 on the side facing the sample inlet gate 100; and

[0053] The drive assembly 600 is driven to connect with the support base 400. The drive assembly 600 is used to drive the support base 400 to move along a first direction, so that the abutment structure 500 contacts the flip door 200 and drives the flip door 200 to rotate to open the sample injection window 101. The abutment structure 500 moves away from the flip door 200 under the drive of the drive assembly 600, and the flip door 200 rotates under the drive of the reset assembly to close the sample injection window 101.

[0054] In this invention, a sample inlet window 101 is provided on the sample inlet gate 100, and a hinged door 200 is rotatably disposed at the sample inlet window 101. The hinged door 200 is connected to the sample inlet gate 100 via a reset assembly. A drive assembly 600 and a support base 400 are provided on one side of the sample inlet gate 100. An abutment structure 500 is provided on the side of the support base 400 facing the sample inlet gate 100. The drive assembly 600 moves towards the sample inlet gate 100, causing the abutment structure 500 to contact the hinged door 200. As the drive assembly 600 drives the hinged door 200, a continuous pushing force is applied, causing the hinged door 200 to rotate relative to the sample inlet gate 100, thereby opening the sample inlet window 101. The support base 400 moves outside the sample inlet window 101 to receive the test tube 10. The drive assembly 600 drives the support base 400 to move in the opposite direction, away from the flip door 200, releasing the drive on the flip door 200. Under the drive of the reset assembly, the flip door 200 rotates in the opposite direction until the sample injection window 101 is closed, thus completing the sample injection process. By setting the abutment structure 500 to first contact the flip door 200 and push it to rotate, the support base 400 is prevented from contacting the flip door 200 first, thus avoiding collisions between the flip door 200 and samples such as test tubes 10 during contact, which could damage the test tubes 10. Through the design of the flip door 200 and the sample injection door 100 rotating, and the cooperation of the reset assembly, the entire sample injection mechanism can achieve self-closing without the need for additional drive, reducing manufacturing costs and resulting in a simple structure with a small footprint.

[0055] Specifically, the sample introduction mechanism of the test tube 10 in this embodiment is applied to a sample detection machine, including but not limited to a respiratory pathogen detection instrument. After the user completes self-sampling, the sample enters the detection machine through the sample introduction mechanism of the test tube 10 for self-testing. The detection machine includes an introduction door 100, which is vertically arranged on one side of the machine. The two sides of the introduction door 100 are the inside and outside of the machine, respectively. An introduction window 101 is provided on the introduction door 100, and the shape of the introduction window 101 is not limited. In this embodiment, the sample is carried by the test tube 10, and the introduction window 101 is rectangular and extends vertically to facilitate the entry and exit of the test tube 10. In one embodiment, the flip door 200 can be designed as a downward flip door 200, i.e. Figure 2 and Figure 3As shown, specifically, a pressure plate is provided at the lower end of the sample inlet window 101. The pressure plate has an upward-opening "U" shape. A pivot is provided at the opening of the pressure plate, and the pivot passes through the flip door 200 and the pressure plate, allowing the flip door 200 to rotate relative to the pivot along its lower end. In other embodiments, the flip door 200 can also be designed to flip upwards, to the left, or to the right. Correspondingly, the pivot and pressure plate are located on the rotating side, which is not limited here. In addition, a slide bar 210 is provided on the side of the flip door 200 facing the support base 400 to reduce the friction during the contact process of the contact structure 500 and prevent the contact structure 500 from scratching the inside of the flip door 200. In this embodiment, the hinged door 200 is folded downwards, and the slide bar 210 is configured to extend vertically along the hinged door 200. The abutment structure 500 contacts the slide bar 210. As the hinged door 200 rotates, the abutment structure 500 gradually slides along the slide bar 210 and moves upwards until the support seat 400 moves outside the sample inlet window 101. If the hinged door 200 is folded to the left or right, the slide bar 210 is configured to extend horizontally, that is, the abutment structure 500 moves along the length of the slide bar 210 after abutting against the hinged door 200. In one embodiment, the slide bar 210 can be made of POM material, which has high strength and rigidity, avoiding deformation after repeated contact with the slide bar 210, providing less friction during the contact process, and reducing driving resistance. In other embodiments, the slide bar 210 can also be made of nylon, PBT (polybutylene terephthalate), or PPS (polyphenylene sulfide), etc., without limitation.

[0056] Please refer to Figure 3 In an embodiment of this utility model, the reset component is configured as a torsion spring 300. The torsion spring 300 connects the sample inlet gate 100 and the flip door 200. The torsion spring 300 is sleeved on the rotating shaft, with one end connected to the sample inlet gate 100 and the other end connected to the flip door 200. When the flip door 200 is pushed to rotate and open the sample inlet window 101, the torsion spring 300 stores elastic potential energy by twisting when the flip door 200 is opened. This ensures that no matter how large the angle of rotation of the flip door 200 is (within the working range of the torsion spring 300), there is always a pulling force that pulls the flip door 200 back to the position of closing the sample inlet window 101. When the drive assembly 600 drives the support base 400 and the abutment structure 500 away from the flip door 200, the torsion spring 300 rebounds and drives the flip door 200 to rotate and close the sample inlet window 101, thus achieving automatic closing of the flip door 200 without a long response time. During the process of the abutment structure 500 gradually moving away from the flip door 200, even if the abutment structure 500 is not completely disengaged from the flip door 200, the torsion spring 300 is still driving the flip door 200 to reset.

[0057] like Figure 2As shown in the embodiment of this utility model, the sample inlet gate 100 is provided with a clearance groove 102, which is located above the sample inlet window 101. A recess is provided above the sample inlet window 101, and the recess is set towards the inside of the sample inlet gate 100. The recess is configured as the clearance groove 102. That is to say, when the support base 400 moves outside the sample inlet window 101, the test tube 10 containing the sample needs to be placed on the support base 400. The test tube 10 has a certain length in the vertical direction. When the user holds the test tube 10 and places it on the support base 400, there is a need for longitudinal movement space. In order to facilitate the placement of the test tube 10 without being affected by the sample inlet gate 100, a clearance groove 102 is provided above the sample inlet gate 100 to avoid the test tube 10 and prevent damage to the test tube 10. It also provides the user with hand movement space, making the placement process of the test tube 10 smoother.

[0058] Please refer to Figure 4 and Figure 5 In an embodiment of this utility model, the abutment structure 500 includes a support rod 510 and an abutment protrusion 520. The support rod 510 is located at the lower end of the support base 400 facing the sample inlet gate 100 and extends downward. The abutment protrusion 520 is located at the end of the support rod 510 away from the support base 400 and protrudes towards the sample inlet gate 100. It can be understood that, since the abutment protrusion 520 protrudes from the plane of the support base 400 facing the sample inlet gate 100, when the support base 400 moves towards the sample inlet gate 100, the abutment protrusion 520 will first contact the flip door 200 and remain in contact with the support base 400. As the device continues to move toward the sample inlet gate 100, it pushes the flip door 200 to rotate. Since the flip door 200 rotates downwards in this embodiment, the upper end of the flip door 200 gradually rotates away from the sample inlet window 101. Therefore, the support rod 510 is set at the lower end of the support base 400. In particular, when the lower end of the test tube 10 passes through the support base 400 and protrudes from the support base 400, the support rod 510 being set at the lower end and extending downwards can prevent the lower end of the test tube 10 from contacting the flip door 200 when it comes into contact with the flip door 200, causing the test tube 10 to move upwards, detach from the support base 400, and tilt or fall.

[0059] Please refer to Figure 5 and Figure 6 In an embodiment of this utility model, a bottom cap 20 is provided at the lower end of the test tube 10, and a through hole is provided at the lower end of the support base 400. The lower end of the test tube 10 passes through the through hole and protrudes from the support base 400, and the bottom cap 20 protrudes from the through hole. The sample injection mechanism of the test tube 10 also includes a cap removal assembly 700, which includes:

[0060] The base plate 710 is fixedly disposed below the drive assembly 600. The base plate 710 has a through notch 711. The inner diameter of the notch 711 is larger than the outer diameter of the cap body of the bottom cap 20 and smaller than the outer diameter of the lower end of the bottom cap 20. The test tube 10 enters the notch 711 under the drive assembly 600, and the notch 711 restricts the bottom cap 20 from rising.

[0061] Specifically, the lower end of test tube 10 is a detection chamber containing detection powder, while the upper end is a hollow cavity containing a processing solution. A sealing membrane separates the hollow cavity from the detection chamber. When a swab is placed into the hollow cavity above test tube 10, the processing solution releases the sample collected from the swab. By puncturing the sealing membrane, the hollow cavity and the detection chamber are connected. The processing solution containing the sample mixes with the powder in the detection chamber, allowing for further detection of the material within the chamber. To protect test tube 10, a bottom cap 20 is provided at its bottom. This not only prevents the bottom of test tube 10 from impacting but also keeps it upright. Test tube 10 is placed on a support 400 at the sample inlet window and passes through the support 400 from top to bottom. The outer diameter of test tube 10 is larger than the outer diameter of the bottom cap 20 at its lower end, and the support 400 passes through it. The aperture of the hole is smaller than the outer diameter of the test tube 10 and larger than the outer diameter of the bottom cap 20, allowing the lower end of the test tube 10 and the bottom cap 20 to pass downward through the support base 400. The through hole can also hold the body of the test tube 10 in place to prevent it from falling. When testing the inside of the test tube 10, the bottom cap 20 needs to be removed to expose the testing chamber and clearly see the test results inside. To better facilitate the removal of the cap from the test tube 10, the structure of this solution includes a base 800, a drive assembly 600 mounted on the base 800, and a drive base 400 that moves the support base 400. A base plate 710 is also mounted on the base 800. After the test tube 10 is placed in the sample inlet window 101, the drive assembly 600 drives the support base 400 to move into the sample inlet gate 100. A base plate 710 is mounted on the base 800, and a notch 711 is mounted on the base plate 710. The inner diameter of the notch 711 is larger than the outer diameter of the bottom cap 20. The support base 400 is moved onto the base plate 710, and the test tube 10 protrudes downward from the through hole of the support base 400. The bottom cap 20 is below the through hole and also below the notch 711. Since the outer diameter of the lower end of the bottom cap 20 is larger than the inner diameter of the notch 711, when the test tube 10 is moved upward, the inner wall of the notch 711 abuts against the bottom cap 20, preventing the bottom cap 20 from rising, thereby separating the bottom cap 20 from the test tube 10. This makes it easier to observe the test results inside the test tube 10. By setting the notch 711 on the base plate 710, the separation of the test tube 10 body from the bottom cap 20 can be achieved simply by driving the test tube 10 upward. This avoids setting up clamping structures to position the test tube and bottom cap, and also eliminates the need for additional driving. The structure is simple and easy to implement.

[0062] Please refer to Figure 4 and Figure 5 In an embodiment of this utility model, the notch 711 has an opening on the side facing the sample inlet gate 100. The drive assembly 600 drives the support base 400 to move away from the sample inlet gate 100 in a first direction, so that the test tube 10 moves through the opening to the notch 711 and the bottom cap 20 is located below the notch 711.

[0063] Specifically, notches 711 are provided through the top and bottom of the base plate 710, and an opening is also provided through the side of the base plate 710 facing the sample inlet gate 100. The opening is connected to the notches 711. When the drive assembly 600 drives the support base 400 to receive the test tube 10 outside the sample inlet window 101, the drive support base 400 and the test tube 10 are moved into the sample inlet window 101 and to the base plate 710. Due to the opening, the outer periphery of the bottom cap 20 protruding below the support base 400 moves from the opening to the notch 711, and the lower end of the bottom cap 20 is located below the notch 711. The notch 711 of the base plate 710 forms a restriction on the bottom cap 20. The process from sampling to cap removal is a continuous process, which improves the cap removal efficiency and avoids damaging the test tube 10.

[0064] In an embodiment of this utility model, the cap removal assembly 700 further includes a collection bucket (not shown), which is located below the notch 711 and is used to receive the bottom cap 20 that has detached from the test tube 10. When the test tube 10 rises (for example, by being grasped by a robotic arm above the test tube 10), the bottom plate 710 snaps the bottom cap 20 into place, causing the bottom cap 20 to detach from the test tube 10. Under the action of gravity, the bottom cap 20 falls directly into the collection bucket below, which facilitates the collection of the detached bottom cap 20 and avoids the bottom cap 20 splashing, which would affect the detection.

[0065] Please refer to Figure 6 In an embodiment of this utility model, the cap removal assembly 700 further includes a protective cover 720, which is disposed between the collection bucket and the bottom plate 710. The two ends of the protective cover 720 are respectively connected to the notch 711 and the collection bucket to guide the bottom cap 20 to the collection bucket. In one embodiment, the protective cover 720 adopts a cuboid structure. In other embodiments, the protective cover 720 may also adopt a cylindrical structure. No limitation is made here. Under the guidance of the protective cover 720, the bottom cap 20 falls directly into the collection bucket below to prevent the bottom cap 20 from splashing.

[0066] In another embodiment, reference is made to Figure 5 and Figure 6The protective cover 720 is provided with a clearance opening for the abutment structure 500. The clearance opening is located at the upper end of the protective cover 720 facing the sample inlet gate 100. When the bottom cap 20 of the test tube 10 is located in the notch of the bottom plate 710, the abutment structure 500 is located in the clearance opening. The structure of the abutment structure 500 protruding from the support base 400 also prevents the bottom cap 20 from splashing outwards during the detachment process, and guides the bottom cap 20 as it falls into the collection bucket through the protective cover 720.

[0067] In an embodiment of this utility model, the driving component 600 includes:

[0068] The drive motor 610 is located on the base 800;

[0069] Synchronous pulley 620 is rotatably mounted on base 800, and the output end of drive motor 610 is connected to synchronous pulley 620 via synchronous belt 630;

[0070] The connecting seat 640 is slidably disposed on the base 800 along the first direction, and the connecting seat 640 is fixedly connected to the timing belt 630 and the support seat 400.

[0071] Please refer to Figure 1 and Figure 4A drive motor 610 is mounted on the base 800 at the end furthest from the sample inlet gate 100. An output wheel is mounted on the output end of the drive motor 610. A synchronous pulley 620 is mounted on the end of the base 800 closest to the sample inlet gate 100. The synchronous pulley 620 and the output wheel are connected by a synchronous belt 630. The drive motor 610 drives the synchronous pulley 620 and the synchronous belt 630 to rotate. The synchronous belt 630 extends along a first direction. A connecting seat 640 is slidably mounted on the upper end of the base 800 and is fixed to the synchronous belt 630. As the synchronous belt 630 moves, the synchronous pulley 620 rotates along the first direction on the base 800. The upper part rotates, and the connecting seat 640 is fixedly connected to the support seat 400 through a connecting block 650, which drives the support seat 400 to move in the first direction, thereby driving the support seat 400 to move to the flip door 200 and drive the flip door 200 to rotate, so that the support seat 400 moves to the outside of the sample inlet window 101 to receive the test tube 10, and then moves in the opposite direction to the inside of the sample inlet window 101 until it is above the bottom plate 710. The bottom cap 20 of the test tube 10 also moves to the bottom of the notch 711, waiting for the mechanical gripper or other tube picking mechanism to take away the test tube 10 and rise to complete the cap removal, and then the test tube 10 is transferred to the detection module, and the above process is repeated. To ensure more stable movement of the connecting seat 640 and the support seat 400 in the first direction, a guide rail extending in the first direction is provided on the top of the base 800. Slider blocks are provided at the bottom of both the connecting seat 640 and the connecting block 650. The sliders slide on the guide rail. Driven by the drive motor 610 and the synchronous belt 630, the movement of the connecting seat 640, the connecting block 650 and the support seat 400 in the first direction is more stable, avoiding deviation and shaking that would affect sampling.

[0072] In embodiments of this utility model, such as Figure 1 and Figure 4 As shown, the drive assembly 600 also includes a photoelectric switch 660, which is located on the base 800 to detect the position of the connector 640 and reset the support 400 to its origin (the movement of the support 400 is controlled by the number of steps of the drive motor 610, and the photoelectric switch 660 provides the reset origin for the drive motor 610). The photoelectric switch 660 is located at the end of the base 800 away from the sample inlet gate 100. When the photoelectric switch 660 detects the connector 640, it indicates that the support 400 has moved above the bottom plate 710, and the bottom cap 20 has also moved accordingly to below the notch 711. The drive motor 610 is then stopped to avoid excessive movement that could affect the removal of the cap from the test tube 10.

[0073] In one embodiment, the photoelectric switch 660 may have a detection plate provided at one end of the connector 640 facing the photoelectric switch 660. The photoelectric switch 660 may be a through-beam photoelectric switch 660, a fiber optic photoelectric switch 660, or a proximity switch may be used instead of the photoelectric switch 660. No limitation is made here.

[0074] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A test tube sample injection mechanism, characterized in that, include: The sample inlet gate is equipped with a sample inlet window; A hinged door is provided at the sample inlet window, and the hinged door is rotatably connected to the sample inlet door to open or close the sample inlet window; A reset component is used to connect the flap door and the sample inlet window so that the flap door tends to keep the sample inlet window closed; Support base, used to hold the test tube; The abutting structure is protruding on the side of the support base facing the sample inlet gate; as well as A driving component is driven to the support base. The driving component is used to drive the support base to move along a first direction, so that the abutment structure contacts the flip door and drives the flip door to rotate to open the sample injection window; the abutment structure moves away from the flip door under the drive of the driving component, and the flip door rotates under the drive of the reset component to close the sample injection window.

2. The test tube injection mechanism as described in claim 1, characterized in that, The reset component is configured as a torsion spring, which connects the sample inlet door and the flip door.

3. The test tube injection mechanism as described in claim 2, characterized in that, The sample inlet gate is provided with a clearance groove, which is located above the sample inlet window.

4. The test tube injection mechanism as described in claim 1, characterized in that, The abutment structure includes a support rod and an abutment protrusion. The support rod is located at the lower end of the support base facing the sample inlet gate and extends downward. The abutment protrusion is located at the end of the support rod away from the support base and protrudes towards the sample inlet gate.

5. The test tube injection mechanism as described in claim 1, characterized in that, The test tube has a bottom cap at its lower end, and the support base has a through hole at its lower end. The lower end of the test tube passes through the through hole and protrudes from the support base, with the bottom cap protruding from the through hole. The test tube injection mechanism also includes a cap removal assembly, which includes: A base plate is fixedly disposed below the driving assembly. The base plate has a through-hole. The inner diameter of the through-hole is larger than the outer diameter of the cap body and smaller than the outer diameter of the lower end of the cap. The test tube enters the through-hole under the drive assembly, and the through-hole restricts the cap from rising.

6. The test tube injection mechanism as described in claim 5, characterized in that, The notch has an opening on the side facing the sample inlet. The drive assembly drives the support to move away from the sample inlet in a first direction, so that the test tube moves through the opening to the notch and the bottom cap is located below the notch.

7. The test tube injection mechanism as described in claim 6, characterized in that, The cap removal assembly also includes a collection bucket located below the notch for receiving the bottom cap that detaches from the test tube.

8. The test tube injection mechanism as described in claim 7, characterized in that, The cap removal assembly also includes a protective cover, which is disposed between the collection bucket and the bottom plate, and the two ends of the protective cover are respectively connected to the notch and the collection bucket to guide the bottom cap to the collection bucket.

9. The test tube injection mechanism as described in claim 5, characterized in that, The test tube injection mechanism also includes a base, and the driving component includes: The drive motor is located on the base. A synchronous pulley is rotatably mounted on the base, and the output end of the drive motor is connected to the synchronous pulley via a synchronous belt. A connecting seat is slidably disposed on the base along a first direction, and the connecting seat is fixedly connected to the timing belt and the supporting seat.

10. The test tube injection mechanism as described in claim 9, characterized in that, The driving assembly also includes a photoelectric switch, which is disposed on the base for detecting the position of the connector.

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