Rocker arm sampling needle structure and automatic diagnosis equipment

Abstract

The utility model relates to the technical field of medical equipment, and discloses a rocker arm sampling needle structure and automatic diagnostic equipment, the rocker arm sampling needle structure comprises: a mounting seat, the top surface of which is provided with a mounting hole and an anti-rotation block; a guide hole is formed in the guide shaft sleeve; the sampling needle assembly comprises a sleeve, a sampling needle and a connecting plate, the sampling needle is in close fit with the sleeve, the sleeve is arranged in the guide hole, the connecting plate is in close fit with the periphery of the top of the sleeve through a connecting hole and is arranged on the top surface of the mounting seat, and the connecting plate is attached to the anti-rotation side surface of the anti-rotation check block; the elastic pressing assembly is connected with the connecting plate; the pipeline is communicated with the sampling needle; the rocker arm is fixedly connected with one end of the mounting seat. According to the utility model, the guide seat is provided with the guide hole, so that the sampling needle assembly is limited to swing; the connecting plate of the sampling needle assembly is attached to the anti-rotation side face of the anti-rotation check block, and therefore the sampling needle is limited to rotate around the sampling needle. Therefore, in the sampling process, the sampling needle is good in stability, and the sampling performance of the sampling needle is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a rocker sampling needle structure and automated diagnostic equipment. Background Art

[0002] In medical testing equipment, sampling devices are indispensable. The main function of the sampling device is to absorb and release test samples or reagents and mix the released samples and reagents to ensure the uniformity of the solution and the accuracy of the test results.

[0003] The rocker sampling needle structure is a part of the sampling device, which is used to quantitatively absorb and release samples or reagents. The sampling needle of the current rocker sampling needle structure is directly set in the needle seat. The sampling needle is easy to swing in the needle seat and rotate around itself. Therefore, during the sampling process, the sampling needle is prone to unpredictable movement, thereby affecting its own sampling performance. Utility Model Content

[0004] In view of this, the utility model provides a rocker sampling needle structure and an automated diagnostic device to solve the problem of the sampling needle swinging and rotating around itself in the prior art.

[0005] In a first aspect, the utility model provides a rocker sampling needle structure, comprising:

[0006] A mounting seat, with mounting holes and anti-rotation blocks arranged at intervals on the top surface;

[0007] A guide seat, comprising a guide sleeve and a mounting flange arranged around the guide sleeve, wherein the mounting flange is mounted on the bottom surface of the mounting seat, the guide sleeve is arranged in the mounting hole, and a guide hole is configured inside the guide sleeve;

[0008] The sampling needle assembly comprises a sleeve, a sampling needle and a connecting plate, wherein a partial section of the sampling needle is tightly matched with the inner circumference of the sleeve, the sleeve is arranged in the guide hole, the connecting plate is tightly matched with the top outer circumference of the sleeve through the connecting hole arranged thereon, and is arranged on the top surface of the mounting seat, and one side surface of the connecting plate is in contact with the anti-rotation side surface of the anti-rotation stopper;

[0009] An elastic pressing component connected to the connecting plate, wherein the connecting plate is in close contact with the top surface of the mounting seat;

[0010] a pipeline, connected to the sampling needle;

[0011] The rocker arm has one end fixedly connected to one end of the mounting seat, and the other end is suitable for connecting to the lifting and rotating mechanism through a rotating shaft.

[0012] Beneficial effect: The guide seat in the rocker sampling needle structure provided by the utility model is provided with a precise guide hole, thereby limiting the swing of the sampling needle assembly; one side of the connecting plate of the sampling needle assembly fits with the anti-rotation side of the anti-rotation block, thereby limiting the rotation of the entire sampling needle assembly, that is, limiting the sampling needle from rotating around itself. Therefore, during the sampling process, the sampling needle has good stability and will not have unpredictable movement states, thereby ensuring its own sampling performance.

[0013] Due to the elastic force of the elastic pressing assembly, the connecting plate is pressed against the top surface of the mounting seat, so that the sampling needle assembly as a whole is kept in a pressed state with the top surface of the mounting seat, thereby maintaining the stability of the sampling needle assembly during operation.

[0014] In an optional embodiment, the elastic pressure assembly includes a stud, a washer and a spring, a limiting ring is arranged around the stud, a limiting hole is opened on the top surface of the mounting seat and is spaced apart from the mounting hole, the limiting hole includes a countersunk hole and a through hole which are coaxially arranged and connected, the stud passes through the washer and the avoidance hole on the connecting plate from top to bottom and is inserted into the limiting hole, the limiting ring is arranged in the countersunk hole, the spring is sleeved on the stud and has its two ends respectively connected to the head of the stud and the washer.

[0015] Beneficial effects: The elastic pressure assembly includes a stud, a washer and a spring. The stud passes through the washer and the avoidance hole on the connecting plate in sequence and is inserted into the limiting hole. The limiting ring on the stud is set in the limiting hole, and the spring connects the head of the stud and the washer. Due to the elastic force of the spring, the connecting plate is pressed against the top surface of the mounting seat, so that the sampling needle assembly as a whole is kept in a pressed state with the top surface of the mounting seat, thereby maintaining the stability of the sampling needle assembly during operation.

[0016] In an optional embodiment, it also includes a sensing component, which includes a matching optocoupler baffle and an optocoupler switch, the optocoupler baffle is aligned with the detection slot of the optocoupler switch, the optocoupler baffle is connected to the connecting plate, and the optocoupler switch is fixed on the mounting base.

[0017] Beneficial effects: the sampling needle assembly is kept in a pressed state with the top surface of the mounting seat, the optocoupler baffle is located in the detection slot of the optocoupler switch, and the optocoupler switch senses that the sampling needle assembly is in a normal working state; when the sampling needle of the sampling needle assembly is subjected to an upward external force, the sampling needle assembly overcomes the pressure of the elastic pressure assembly and moves upward, and the connecting plate of the sampling needle assembly leaves the top surface of the mounting seat, thereby driving the optocoupler baffle to disengage from the detection slot of the optocoupler switch, and the optocoupler switch thereby senses that the sampling needle assembly is in an abnormal working state.

[0018] In an optional implementation, a mounting groove is further provided on the top surface of the mounting seat, and the optical coupling switch is installed in the mounting groove.

[0019] Beneficial effect: By installing the optocoupler switch through the mounting groove, the optocoupler switch can be ensured to be at an appropriate height so as to cooperate with the optocoupler baffle; the optocoupler switch can also be confined in an independent space, thus playing a certain protective role.

[0020] In an optional embodiment, the optocoupler baffle is L-shaped, one side plate of the optocoupler baffle is fixedly connected to a side of the connecting plate away from the block, and the other side plate of the optocoupler baffle is aligned with the detection slot of the optocoupler switch.

[0021] Beneficial effects: The optocoupler baffle is L-shaped, has a simple and reasonable structure, is convenient for connecting the connecting plate and cooperating with the optocoupler switch.

[0022] In an optional embodiment, at least a partial section of the pipeline is arranged along the length direction of the rocker arm, and a pipe hole is provided on the rocker arm, and the pipe hole is suitable for passing a binding piece to fix the pipeline.

[0023] Beneficial effect: Pipe holes are arranged on the rocker arm, which facilitates the fixing of pipes through binding pieces and ensures orderly arrangement of pipes.

[0024] In an optional embodiment, a vertical plate is provided on the rocker arm, and a plurality of the tube holes are provided on the top of the vertical plate.

[0025] Beneficial effect: A vertical plate is arranged on the rocker arm, and a plurality of pipe holes are arranged on the top of the vertical plate, so that the pipeline can be fixed at multiple locations to ensure that the pipeline is orderly and regular.

[0026] In an optional embodiment, it also includes a board card fixing plate and a board card, the board card fixing plate is vertically fixed on the rocker arm, at least one side of the board card fixing plate is vertically connected to the first waterproof board, the top surface of the board card fixing plate is vertically connected to the second waterproof board, the board card is fixed to one side of the board card fixing plate and is located in the space surrounded by the first waterproof board, the second waterproof board and the board card fixing plate, and the connection between the sampling needle and the pipeline is located above the second waterproof board.

[0027] Beneficial effect: The first waterproof plate and the second waterproof plate can prevent liquid in the pipeline, such as water, from flowing out and wetting the board, thereby ensuring the normal operation of the board.

[0028] In an optional embodiment, the second waterproof plate is bent upward to form a first waterproof retaining edge;

[0029] And / or, a notch is provided at one end of the board and card fixing plate for avoiding parts of the board and card, an upper edge of the board and card fixing plate corresponding to the notch is vertically connected to a second waterproof retaining edge, and a side edge of the board and card fixing plate corresponding to the notch is vertically connected to a third waterproof retaining edge;

[0030] And / or, a pipe buckle is provided at one end of the second waterproof plate.

[0031] Beneficial effects: The first waterproof rib, the second waterproof rib and the third waterproof rib can further protect the board from being wetted by liquids such as water; the pipe buckle can fix the pipe to further ensure the stability of the pipe.

[0032] In a second aspect, the utility model also provides an automated diagnostic device, comprising:

[0033] The rocker arm sampling needle structure;

[0034] A lifting and rotating mechanism, connected to an end of the rocker arm away from the mounting seat via a rotating shaft;

[0035] The detection mechanism is used to receive the reagent collected by the rocker sampling needle structure and perform detection.

[0036] Beneficial effect: The lifting and rotating mechanism drives the rocker arm sampling needle structure to move up and down and rotate, thereby facilitating the rocker arm sampling needle structure to move to a set position for sampling, and then send it to the set position of the detection mechanism for detection.

[0037] Because the automated diagnostic equipment includes a rocker sampling needle structure, it has the same effect as the rocker sampling needle structure, that is, the guide seat in the rocker sampling needle structure is provided with a precise guide hole, thereby limiting the swing of the sampling needle assembly; one side of the connecting plate of the sampling needle assembly fits with the anti-rotation side of the anti-rotation block, thereby limiting the rotation of the entire sampling needle assembly, that is, limiting the sampling needle from rotating around itself. Therefore, during the sampling process, the sampling needle has good stability and will not have unpredictable motion states, thereby ensuring its own sampling performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 This is a structural schematic diagram of a rocker sampling needle structure of an embodiment of the utility model;

[0040] Figure 2 It is a partial structural schematic diagram of the rocker sampling needle structure of an embodiment of the utility model;

[0041] Figure 3 A partial cross-sectional view of the rocker sampling needle structure of an embodiment of the utility model;

[0042] Figure 4 This is a schematic diagram of the structure of the sampling needle assembly of an embodiment of the utility model;

[0043] Figure 5 This is a schematic diagram of the structure of the mounting base of an embodiment of the utility model;

[0044] Figure 6 This is a schematic diagram of the structure of the rocker arm of an embodiment of the utility model;

[0045] Figure 7 It is a schematic structural diagram of a board fixing plate and a board according to an embodiment of the utility model.

[0046] Description of reference numerals:

[0047] 10. Mounting seat; 11. Mounting hole; 12. Anti-rotation block; 13. Countersunk hole; 14. Through hole; 15. Mounting groove; 20. Guide seat; 21. Guide sleeve; 22. Mounting flange; 30. Sampling needle assembly; 31. Sleeve; 32. Sampling needle; 33. Connecting plate; 331. Connecting hole; 332. Avoidance hole; 40. Pipe; 50. Rocker arm; 51. Pipe hole; 52. Vertical plate; 60. Elastic pressure assembly; 61. Stud; 611. Limiting ring; 62. Washer; 63. Spring; 70. Induction assembly; 71. Optocoupler baffle; 72. Optocoupler switch; 80. Board fixing plate; 81. First waterproof board; 82. Second waterproof board; 83. First waterproof rib; 84. Second waterproof rib; 85. Third waterproof rib; 86. Pipe buckle; 90. Board. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0049] Combine the following Figures 1 to 7 , describing an embodiment of the utility model.

[0050] According to an embodiment of the utility model, on the one hand, a rocker sampling needle structure is provided, comprising:

[0051] A mounting seat 10, a top surface of which is provided with mounting holes 11 and an anti-rotation stopper 12 at intervals;

[0052] The guide seat 20 includes a guide sleeve 21 and a mounting flange 22 arranged around the guide sleeve 21, the mounting flange 22 is mounted on the bottom surface of the mounting seat 10, the guide sleeve 21 is arranged in the mounting hole 11, and the guide sleeve 21 is configured as a guide hole;

[0053] The sampling needle assembly 30 includes a sleeve 31, a sampling needle 32 and a connecting plate 33. A partial section of the sampling needle 32 is tightly matched with the inner periphery of the sleeve 31. The sleeve 31 is arranged in the guide hole. The connecting plate 33 is tightly matched with the top outer periphery of the sleeve 31 through a connecting hole 331 arranged thereon, and is arranged on the top surface of the mounting seat 10. One side surface of the connecting plate 33 is in contact with the anti-rotation side surface of the anti-rotation stopper 12.

[0054] The elastic pressing component 60 is connected to the connecting plate 33, and the connecting plate 33 is closely attached to the top surface of the mounting seat 10;

[0055] A pipeline 40 is connected to the sampling needle 32;

[0056] One end of the rocker arm 50 is fixedly connected to one end of the mounting base 10, and the other end is suitable for connecting the lifting and rotating mechanism through a rotating shaft, wherein a rotating shaft hole 53 adapted to the rotating shaft is provided at the other end of the rocker arm 50. The pipeline 40 can be a water pipe.

[0057] The guide seat 20 in the rocker sampling needle structure provided in this embodiment is provided with a precise guide hole, thereby limiting the swing of the sampling needle assembly 30; one side of the connecting plate 33 of the sampling needle assembly 30 is in contact with the anti-rotation side of the anti-rotation block 12, thereby limiting the rotation of the entire sampling needle assembly 30, that is, limiting the sampling needle 32 from rotating around itself. Therefore, during the sampling process, the sampling needle 32 has good stability and will not have unpredictable motion states, thereby ensuring its own sampling performance.

[0058] Due to the elastic force of the elastic pressing assembly 60, the connecting plate 33 is pressed against the top surface of the mounting seat 10, so that the sampling needle assembly 30 as a whole is kept pressed against the top surface of the mounting seat 10, thereby maintaining the stability of the sampling needle assembly 30 during operation.

[0059] like Figures 1 to 3 As shown, in one embodiment, the elastic pressure component 60 includes a stud 61, a washer 62 and a spring 63. A circle of limiting ring 611 is arranged around the stud 61. The top surface of the mounting seat 10 is provided with a limiting hole arranged at an interval with the mounting hole 11. The limiting hole includes a countersunk hole 13 and a through hole 14 coaxially arranged and connected. The stud 61 passes through the washer 62 and the avoidance hole 332 on the connecting plate 33 from top to bottom and is inserted into the limiting hole. The limiting ring 611 is arranged in the countersunk hole 13. The spring 63 is sleeved on the stud 61 and the two ends are respectively connected to the head of the stud 61 and the washer 62. The connecting plate 33 is tightly attached to the top surface of the mounting seat 10 under the elastic action of the spring 63.

[0060] The elastic pressing assembly 60 includes a stud 61, a washer 62 and a spring 63. The stud 61 passes through the washer 62 and the avoidance hole 332 on the connecting plate 33 in sequence and is inserted into the limiting hole. The limiting ring 611 on the stud 61 is set in the limiting hole to limit the stud 61; the spring 63 connects the head of the stud 61 and the washer 62. Due to the elastic force of the spring 63, the connecting plate 33 is pressed against the top surface of the mounting seat 10, so that the sampling needle assembly 30 as a whole is kept in a pressed state with the top surface of the mounting seat 10, thereby maintaining the stability of the sampling needle assembly 30 during operation.

[0061] like Figure 2 As shown, in one embodiment, it also includes a sensing component 70, the sensing component 70 includes a matching optocoupler baffle 71 and an optocoupler switch 72, the optocoupler baffle 71 is aligned with the detection slot of the optocoupler switch 72, the optocoupler baffle 71 is connected to the connecting plate 33, and the optocoupler switch 72 is fixed on the mounting base 10.

[0062] Specifically, the optical coupling baffle 71 and the optical coupling switch 72 are arranged vertically.

[0063] The sampling needle assembly 30 is kept in a pressed state with the top surface of the mounting seat 10, and the optical coupling baffle 71 is located in the detection slot of the optical coupling switch 72, and the optical coupling switch 72 senses that the sampling needle assembly 30 is in a normal working state; when the sampling needle 32 of the sampling needle assembly 30 is subjected to an upward external force, the sampling needle assembly 30 overcomes the pressure of the elastic pressing assembly 60 and moves upward, and the connecting plate 33 of the sampling needle assembly 30 leaves the top surface of the mounting seat 10, thereby driving the optical coupling baffle 71 to disengage from the detection slot of the optical coupling switch 72, and the optical coupling switch 72 thereby senses that the sampling needle assembly 30 is in an abnormal working state, and then sends a signal to the control unit.

[0064] For example, when the sampling needle assembly 30 is moving downward, the sampling needle 32 moves downward too much and contacts the bottom plate of the container. The sampling needle 32 is subjected to an upward reaction force, and the sampling needle assembly 30 overcomes the pressure of the elastic pressing assembly 60 and moves upward. The connecting plate 33 of the sampling needle assembly 30 leaves the top surface of the mounting seat 10, thereby driving the optical coupling baffle 71 to disengage from the detection slot of the optical coupling switch 72. The optical coupling switch 72 senses that the sampling needle assembly 30 is in an abnormal working state, and then sends a signal to the control unit. The control unit then drives the sampling needle assembly 30 to move upward by controlling the lifting and rotating mechanism, thereby protecting the sampling needle 32.

[0065] like Figure 5As shown, in one embodiment, a mounting groove 15 is further provided on the top surface of the mounting seat 10, and the optical coupler switch 72 is mounted in the mounting groove 15. By mounting the optical coupler switch 72 through the mounting groove 15, the optical coupler switch 72 can be ensured to be at an appropriate height, thereby cooperating with the optical coupler baffle 71; the optical coupler switch 72 can also be confined in an independent space, thereby playing a certain protective role.

[0066] like Figures 1 to 4 As shown, in one embodiment, the optical coupling baffle 71 is L-shaped, one side plate of the optical coupling baffle 71 is fixedly connected to a side of the connecting plate 33 away from the block, and the other side plate of the optical coupling baffle 71 is aligned with the detection slot of the optical coupling switch 72. The optical coupling baffle 71 is L-shaped, with a simple and reasonable structure, and is convenient for connecting the connecting plate 33 and cooperating with the optical coupling switch 72.

[0067] like Figure 1 As shown, in one embodiment, at least a partial section of the pipe 40 is arranged along the length direction of the rocker arm 50, and a pipe hole 51 is provided on the rocker arm 50, and the pipe hole 51 is suitable for passing a binding member to fix the pipe 40. The pipe hole 51 is provided on the rocker arm 50, so that the pipe 40 can be fixed by a binding member, thereby ensuring that the pipe 40 is arranged in an orderly manner. The binding member is such as a wire or a cable tie.

[0068] like Figure 1 and Figure 6 As shown, in one embodiment, a vertical plate 52 is provided on the rocker arm 50, and a plurality of pipe holes 51 are provided on the top of the vertical plate 52. The rocker arm 50 is provided with a vertical plate 52, and a plurality of pipe holes 51 are provided on the top of the vertical plate 52, so that the pipeline 40 can be fixed at multiple locations to ensure that the pipeline 40 is orderly and regular.

[0069] like Figure 1 and Figure 7 As shown, in one embodiment, it also includes a board card fixing plate 80 and a board card 90, the board card fixing plate 80 is vertically fixed on the rocker arm 50, at least one side of the board card fixing plate 80 is vertically connected to the first waterproof plate 81, and the top surface of the board card fixing plate 80 is vertically connected to the second waterproof plate 82, the board card 90 is fixed to one side of the board card fixing plate 80, and is located in the space surrounded by the first waterproof plate 81, the second waterproof plate 82 and the board card fixing plate 80, and the connection between the sampling needle 32 and the pipeline 40 is located above the second waterproof plate 82. The first waterproof plate 81 and the second waterproof plate 82 can prevent the liquid in the pipeline 40, such as water, from flowing out and wetting the board card 90, thereby ensuring the normal operation of the board card 90.

[0070] like Figure 1 and Figure 7As shown, in one embodiment, the second waterproof plate 82 is bent upward to form a first waterproof rib 83; one end of the board card fixing plate 80 is provided with a notch for avoiding parts of the board card 90, the upper edge of the board card fixing plate 80 corresponding to the notch is vertically connected to the second waterproof rib 84, and the side edge of the board card fixing plate 80 corresponding to the notch is vertically connected to the third waterproof rib 85; one end of the second waterproof plate 82 is provided with a pipe buckle 86.

[0071] The first waterproof rib 83 , the second waterproof rib 84 and the third waterproof rib 85 can further protect the board 90 from being wetted by liquids such as water; the pipe buckle 86 can fix the pipe 40 to further ensure the stability of the pipe 40 .

[0072] According to an embodiment of the utility model, on the other hand, an automated diagnostic device is also provided, including: a rocker arm sampling needle structure; a lifting and rotating mechanism, connected to the end of the rocker arm 50 away from the mounting seat 10 through a rotating shaft; and a detection mechanism, used to receive the reagent collected by the rocker arm sampling needle structure and perform detection.

[0073] The lifting and rotating mechanism drives the rocker sampling needle structure to move up and down and rotate, so that the rocker sampling needle structure can be moved to the set position for sampling, and then sent to the set position in the detection mechanism for detection. Because the automated diagnostic equipment includes a rocker sampling needle structure, it has the same effect as the rocker sampling needle structure, that is, the guide seat 20 in the rocker sampling needle structure is provided with a precise guide hole, thereby limiting the swing of the sampling needle assembly 30; one side of the connecting plate 33 of the sampling needle assembly 30 fits with the anti-rotation side of the anti-rotation block 12, thereby limiting the rotation of the entire sampling needle assembly 30, that is, limiting the sampling needle 32 from rotating around itself. Therefore, during the sampling process, the sampling needle 32 has good stability and will not have unpredictable motion states, thereby ensuring its own sampling performance.

[0074] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A rocker sampling needle structure, characterized in that: include: A mounting seat (10) having mounting holes (11) and an anti-rotation stopper (12) arranged on the top surface at intervals; The guide seat (20) comprises a guide sleeve (21) and a mounting flange (22) arranged around the guide sleeve (21), wherein the mounting flange (22) is mounted on the bottom surface of the mounting seat (10), the guide sleeve (21) is arranged in the mounting hole (11), and a guide hole is configured inside the guide sleeve (21); A sampling needle assembly (30) comprises a sleeve (31), a sampling needle (32) and a connecting plate (33), wherein a partial section of the sampling needle (32) is tightly matched with the inner periphery of the sleeve (31), the sleeve (31) is arranged in the guide hole, the connecting plate (33) is tightly matched with the top outer periphery of the sleeve (31) through a connecting hole (331) arranged thereon, and is arranged on the top surface of the mounting seat (10), and a side surface of the connecting plate (33) is in contact with the anti-rotation side surface of the anti-rotation stopper (12); An elastic pressing component (60) is connected to the connecting plate (33), and the connecting plate (33) is in close contact with the top surface of the mounting seat (10); A pipeline (40) connected to the sampling needle (32); One end of the rocker arm (50) is fixedly connected to one end of the mounting seat (10), and the other end is suitable for being connected to the lifting and rotating mechanism through a rotating shaft.

2. The rocker sampling needle structure according to claim 1, characterized in that: The elastic pressure component (60) comprises a stud (61), a washer (62) and a spring (63); a circle of limiting ring (611) is arranged around the stud (61); a limiting hole is provided on the top surface of the mounting seat (10) and is spaced apart from the mounting hole (11); the limiting hole comprises a countersunk hole (13) and a through hole (14) which are coaxially arranged and connected; the stud (61) passes through the washer (62) and the avoidance hole (332) on the connecting plate (33) from top to bottom and is inserted into the limiting hole; the limiting ring (611) is arranged in the countersunk hole (13); the spring (63) is sleeved on the stud (61) and its two ends are respectively connected to the head of the stud (61) and the washer (62).

3. The rocker sampling needle structure according to claim 1 or 2, characterized in that: The invention also comprises a sensing component (70), wherein the sensing component (70) comprises a matching optical coupling baffle (71) and an optical coupling switch (72), wherein the optical coupling baffle (71) is aligned with a detection slot of the optical coupling switch (72), the optical coupling baffle (71) is connected to the connecting plate (33), and the optical coupling switch (72) is fixed on the mounting seat (10).

4. The rocker sampling needle structure according to claim 3, characterized in that: The top surface of the mounting seat (10) is also provided with a mounting groove (15), and the optical coupling switch (72) is mounted in the mounting groove (15).

5. The rocker sampling needle structure according to claim 3, characterized in that: The optical coupling baffle (71) is L-shaped, one side plate of the optical coupling baffle (71) is fixedly connected to a side surface of the connecting plate (33) away from the baffle, and the other side plate of the optical coupling baffle (71) is aligned with the detection slot of the optical coupling switch (72).

6. The rocker sampling needle structure according to claim 1 or 2, characterized in that: At least a partial section of the pipeline (40) is arranged along the length direction of the rocker arm (50), and a pipe hole (51) is provided on the rocker arm (50), and the pipe hole (51) is suitable for passing a binding piece to fix the pipeline (40).

7. The rocker sampling needle structure according to claim 6, characterized in that: A vertical plate (52) is provided on the rocker arm (50), and a plurality of the tube holes (51) are provided on the top of the vertical plate (52).

8. The rocker sampling needle structure according to claim 1 or 2, characterized in that: It also includes a board card fixing plate (80) and a board card (90), wherein the board card fixing plate (80) is vertically fixed on the rocker arm (50), at least one side of the board card fixing plate (80) is vertically connected to the first waterproof plate (81), and the top surface of the board card fixing plate (80) is vertically connected to the second waterproof plate (82), the board card (90) is fixed to one side of the board card fixing plate (80), and is located in a space surrounded by the first waterproof plate (81), the second waterproof plate (82) and the board card fixing plate (80), and the connection between the sampling needle (32) and the pipeline (40) is located above the second waterproof plate (82).

9. The rocker sampling needle structure according to claim 8, characterized in that: The second waterproof plate (82) is bent upward to form a first waterproof retaining edge (83); And / or, one end of the board card fixing plate (80) is provided with a notch for avoiding parts of the board card (90), the upper edge of the board card fixing plate (80) corresponding to the notch is vertically connected to the second waterproof retaining edge (84), and the side edge of the board card fixing plate (80) corresponding to the notch is vertically connected to the third waterproof retaining edge (85); And / or, a pipe buckle (86) is provided at one end of the second waterproof plate (82).

10. An automated diagnostic device, characterized in that: include: The rocker sampling needle structure according to any one of claims 1 to 9; A lifting and rotating mechanism connected to an end of the rocker arm (50) away from the mounting seat (10) via a rotating shaft; The detection mechanism is used to receive the reagent collected by the rocker sampling needle structure and perform detection.

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