Stirring device and sample analyzer

Abstract

The invention relates to a stirring device and a sample analyzer. The stirring device comprises a transmission part, a stirring part and a pressing mechanism. Through mutual clamping and separation of the first clamping part and the second clamping part, assembly and disassembly of the stirring piece are completed, disassembly and assembly of the stirring piece can be completed without any tool, the disassembly and assembly steps are simplified, meanwhile, the disassembly and assembly time is shortened, and disassembly and assembly convenience and efficiency are improved. The first clamping part is matched with the second clamping part, so that the stirring part is positioned, and the pressing mechanism is used for applying pressing force to the stirring part in the axial direction of the stirring part, so that double locking is formed, axial displacement of the stirring part can be restrained, reliable dynamic pre-tightening can be provided, the stability and reliability of connection between the transmission part and the stirring part are improved, and the service life of the stirring part is prolonged. The stirring piece is prevented from loosening in the rotating process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sample analysis, in particular to a stirring device and a sample analyzer. BACKGROUND

[0002] In a sample analyzer, a stirring device is usually used to mix samples and reagents. The stirring device generally comprises a connecting piece, a stirring shaft and a transmission shaft. The connecting piece is fixedly connected with the stirring shaft and the transmission shaft through threads. Special tools are needed during installation, and the steps are complicated, which makes the replacement and maintenance of the stirring shaft extremely inconvenient. In addition, the stability and reliability of the stirring device are poor, and the stirring shaft is prone to looseness during high-speed rotation. SUMMARY

[0003] Therefore, it is necessary to provide a stirring device and a sample analyzer, which can be disassembled and assembled without the aid of auxiliary tools, simplify the disassembly and assembly steps, shorten the disassembly and assembly time, improve the disassembly and assembly convenience and efficiency, and improve the stability and reliability of the stirring device.

[0004] In a first aspect, the present application provides a stirring device, comprising:

[0005] a transmission member provided with a first clamping portion;

[0006] a stirring member provided with a second clamping portion, the first clamping portion and the second clamping portion being clamped and matched to position the stirring member; and

[0007] a pressing mechanism for applying axial pressure to the stirring member to make the second clamping portion abut against the first clamping portion.

[0008] In one of the embodiments, the stirring device comprises a locking member connected with the first end of the transmission member, and an elastic member, one end of which is connected with the locking member, and the other end of which is connected with the stirring member.

[0009] In one of the embodiments, the stirring device further comprises an abutting member provided between the stirring member and the elastic member, one end of the abutting member being connected with the first end of the stirring member, and the other end of the abutting member being connected with the elastic member.

[0010] In one of the embodiments, the transmission member is provided with an inner hole penetrating through the transmission member along the axial direction of the transmission member, the first end of the stirring member is arranged in the inner hole, and the second end of the stirring member is arranged as a stirring portion.

[0011] In one of the embodiments, at least one of the first clamping part and the second clamping part is provided with a clamping groove, and at least one of the first clamping part and the second clamping part is provided with a clamping protrusion, which is arranged in the clamping groove.

[0012] In one of the embodiments, the clamping groove is arranged at the second end of the transmission member, and the second end of the transmission member is further provided with a gap, which is in communication with the clamping groove, and the gap is used for allowing the clamping protrusion to enter the clamping groove.

[0013] In one of the embodiments, the gap comprises a first opening and a second opening, the first opening extends along the axial direction of the transmission member and penetrates through the end face of the second end of the transmission member, and the second opening is arranged between the first opening and the clamping groove, and the second opening is in communication with the first opening and the clamping groove.

[0014] In one of the embodiments, the stirring device further comprises a housing, the transmission member is arranged in the housing, and the transmission member is provided with a bearing, and the transmission member is connected with the housing through the bearing.

[0015] In one of the embodiments, the first clamping part and the second clamping part are both arranged outside the housing, and the second end of the transmission member is further provided with a limiting boss, which is arranged outside the housing and abuts against the bearing.

[0016] In a second aspect, the application further provides a sample analyzer comprising the stirring device as described in any one of the embodiments.

[0017] The stirring device and the sample analyzer as described above can complete the installation and disassembly of the stirring member by the mutual clamping and separation of the first clamping part and the second clamping part, so that the disassembly and assembly of the stirring member can be completed without any tools, which can not only simplify the disassembly and assembly steps, but also shorten the disassembly and assembly time, and improve the disassembly and assembly convenience and efficiency. Through the cooperation of the first clamping part and the second clamping part, the positioning of the stirring member is realized, and the pressing mechanism is used to apply a pressing force to the stirring member along the axial direction of the stirring member, so as to form a double locking, which can not only constrain the axial displacement of the stirring member, but also provide reliable dynamic pre-tightening, thereby improving the stability and reliability of the connection between the transmission member and the stirring member, and effectively preventing the stirring member from loosening during high-speed rotation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural schematic diagram of a stirring device according to an embodiment of the application.

[0019] Figure 2 FIG. 2 is a structural schematic diagram of a stirring member and a transmission member of the stirring device according to an embodiment of the application before assembly.

[0020] Figure 3 FIG. 3 is a structural schematic diagram of the stirring device according to an embodiment of the application after assembly.Figure 1 A sectional view of the stirring device shown.

[0021] Figure 4 A structural schematic view of a driving member of the stirring device according to an embodiment of the present application.

[0022] Figure 5 A structural schematic view of a stirring member of the stirring device according to an embodiment of the present application. Figure 4 A front view of the driving member of the stirring device shown.

[0023] Figure 6 A front view of the driving member of the stirring device shown. Figure 4 A side view of the driving member of the stirring device shown.

[0024] Figure 7 A structural schematic view of a stirring member of the stirring device according to an embodiment of the present application.

[0025] BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 10, stirring device; 11, driving member; 111, first clamping portion; 1111, clamping groove; 112, notch; 1121, first opening; 1122, second opening; 113, limiting boss; 114, inner hole; 12, stirring member; 121, second clamping portion; 1211, clamping boss; 13, pressing mechanism; 131, elastic member; 132, locking member; 15, pressing member; 16, housing; 161, first opening; 162, second opening; 163, avoiding opening; 17, first bearing; 18, second bearing; 19, driving wheel. DETAILED DESCRIPTION

[0027] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the scope of the present application, and it is understood that similar modifications can be made by those skilled in the art in the light of the following disclosure, and therefore the present application is not limited to the following embodiments disclosed.

[0028] An embodiment of the present application provides a sample analyzer, which includes, but is not limited to, a biochemical analyzer, an immune analyzer, a blood cell analyzer and a blood coagulation analyzer.

[0029] Referring to Figure 1 The sample analyzer includes a stirring device 10, which is used to stir a reaction solution so as to uniformly mix a sample and a reagent in the reaction solution.

[0030] Furthermore, the sample analyzer also includes a drive unit. The drive unit is connected to the stirring device 10 and is used to move the stirring device 10 above the reaction solution and drive the stirring end of the stirring device 10 into the reaction solution, thereby driving the stirring device 10 to rotate to stir the reaction solution.

[0031] In one embodiment, see Figure 1 , Figure 2 and Figure 3 The stirring device 10 includes a transmission component 11, a stirring component 12, and a pressing mechanism 13. The transmission component 11 has a first engaging portion 111, and the stirring component 12 has a second engaging portion 121. The first engaging portion 111 and the second engaging portion 121 engage with each other to position the stirring component 12. The pressing mechanism 13 is connected to the stirring component 12 and applies axial pressure to the stirring component 12 so that the second engaging portion 121 presses against the first engaging portion 111.

[0032] The mixing component 12 can be installed and disassembled by interlocking and separating the first snap-fit ​​part 111 and the second snap-fit ​​part 121. In this way, the mixing component 12 can be installed and disassembled without the need for any tools, which not only simplifies the installation and disassembly process and reduces the requirements for operators, but also shortens the installation and disassembly time and improves the convenience and efficiency of installation and disassembly.

[0033] The first locking part 111 and the second locking part 121 cooperate to achieve axial positioning of the stirring component 12, and the clamping mechanism 13 applies a clamping force to the stirring component 12 along its axial direction, thereby forming a double lock. In this way, the axial displacement of the stirring component 12 can be restrained, and reliable dynamic pre-tightening can be provided, thereby improving the stability and reliability of the connection between the transmission component 11 and the stirring component 12, and effectively preventing the stirring component 12 from loosening during high-speed rotation.

[0034] In one embodiment, see Figure 4 The transmission component 11 has an inner hole 114, which extends through the transmission component 11 along its axial direction. It can be understood that the transmission component 11 is hollow.

[0035] See Figure 3 and Figure 4The first end of the stirring element 12 is located in the inner hole 114, and the second end of the stirring element 12 is designated as the stirring section, i.e., the second end of the stirring shaft 12 is used to extend into the reaction solution to stir the reaction solution. Optionally, the second end of the stirring element 12 is cylindrical or flat. In this way, the inner hole 114 extending axially along the transmission member 11 provides a receiving space and axial guidance for the stirring element 12, ensuring that the stirring element 12 maintains counterweight and stability during transmission, reducing radial runout, and also making the structure compact, which is beneficial to the miniaturization of the stirring device 10. In addition, the first end of the stirring element 12 forms an internally fitted connection with the transmission member 11, so that the driving force is directly and efficiently transmitted from the transmission member 11 to the first end of the stirring element 12, reducing energy loss; the first end of the stirring element 12 bears the torque, and the second end of the stirring element 12 bears the stirring load, which is beneficial to improving the strength and durability of the overall structure.

[0036] In one embodiment, see Figure 3 The clamping mechanism 13 also includes a locking element 132 and an elastic element 131. The locking element 132 is connected to the first end of the transmission element 11. One end of the elastic element 131 is connected to the locking element 132, and the other end of the elastic element 131 is connected to the stirring element 12.

[0037] Optionally, the elastic element 131 is a spring, which extends and retracts along the axial direction of the stirring element 12.

[0038] Of course, in other embodiments, the elastic element 131 may also be a component with elastic function such as a rubber column, and is not limited thereto.

[0039] Optionally, the locking element 132 is a nut, which is threadedly connected to the first end of the transmission element 11. The elastic element 131 is disposed inside the nut, with one end of the elastic element 131 connected to the top of the nut and the other end of the elastic element 131 connected to the stirring element 12.

[0040] Of course, in other embodiments, the locking member 132 may also be a screw cap or an end cap with a snap fastener.

[0041] Because the axial clamping force applied by the elastic element 131 to the agitator 12 can not only provide dynamic pre-tightening for the agitator 12, but also effectively buffer and absorb energy when the agitator 12 is subjected to axial collision, reducing the risk of damage to the agitator 12 due to instantaneous impact, thereby improving the service life and reliability of the agitator 10.

[0042] By setting the locking element 132, the locking element 132 can adjust and lock the axial pressing force of the elastic element 131 on the stirring element 12, ensuring that the stirring element 12 can maintain constant pressing during long-term operation, and preventing the connection between the transmission element 11 and the stirring element 12 from loosening due to pressure relaxation.

[0043] By setting the locking component 132, the elastic component 131 is integrated into an independent and adjustable functional module, which facilitates the unified adjustment of the pre-tightening state during assembly and also makes it easier to replace or adjust the elastic component 131 separately during subsequent maintenance without disassembling the overall structure.

[0044] In one embodiment, see Figure 3 The stirring device 10 also includes a pressing member 15. The pressing member 15 is disposed between the stirring member 12 and the elastic member 131. One end of the pressing member 15 is connected to the first end of the stirring member 12, and the other end of the pressing member 15 is connected to the elastic member 131.

[0045] By setting up the pressing member 15, which serves as an intermediate force transmission component, the axial clamping force of the elastic member 131 can be transmitted more evenly to the end face of the stirring member 12, avoiding local stress concentration and improving the load-bearing stability and durability of the connection interface.

[0046] By inserting the pressing member 15 through at least one of the transmission member 11 and the locking member 132, the axial movement trajectory of the stirring member 12 can be constrained during elastic compression, improving the alignment accuracy of the stirring member 12 and reducing its sway. Furthermore, the pressing member 15 can form additional support, increasing overall axial stiffness, while allowing the elastic member 131 to be appropriately separated from the stirring member 12 in space, providing arrangement space for elastic members 131 of different sizes and improving structural adaptability.

[0047] In this embodiment, see Figure 3 One end of the pressing member 15 is located inside the transmission member 11, and the other end of the pressing member 15 is located inside the locking member 132. The elastic member 131 is located inside the locking member 132, with one end of the elastic member 131 connected to the pressing member 15 and the other end of the elastic member 131 connected to the locking member 132.

[0048] In one embodiment, at least one of the first engaging portion 111 and the second engaging portion 121 is provided with a slot 1111, and at least the other of the first engaging portion 111 and the second engaging portion 121 is provided with a protrusion 1211, which is disposed within the slot 1111. Thus, with the cooperation of the protrusion 1211 and the slot 1111, a detachable connection between the transmission member 11 and the stirring member 12 can be achieved.

[0049] In this embodiment, see Figure 4 , Figure 5 , Figure 6 and Figure 7 The first snap-fit ​​part 111 is provided with a snap-fit ​​groove 1111, and the second snap-fit ​​part 121 is provided with a snap-fit ​​protrusion 1211. The snap-fit ​​protrusion 1211 is provided in the snap-fit ​​groove 1111 to axially position the stirring component 12.

[0050] In one embodiment, the second end of the transmission member 11 faces the second end of the stirring member 12, and the slot 1111 is provided at the second end of the transmission member 11.

[0051] See Figure 4 , Figure 5 and Figure 6 The second end of the transmission component 11 is also provided with a notch 112, which is connected to the slot 1111. The notch 112 is used to allow the card protrusion 1211 to enter the slot 1111.

[0052] During installation, the first end of the agitator 12 is inserted into the transmission member 11, and the locking protrusion 1211 of the agitator 12 enters the notch 112. Then, the agitator 12 is pushed towards the locking member 132 and rotated, so that the locking protrusion 1211 enters the slot 1111 from the notch 112. After the external force acting on the agitator 12 is removed, the elastic member 131 applies an axial clamping force to the agitator 12, thereby pressing the locking protrusion 1211 against the groove wall of the slot 1111, thus realizing the installation of the agitator 12.

[0053] During disassembly, push the agitator 12 toward the locking member 132, and then rotate the agitator 12 in the opposite direction so that the agitator 12 exits from the slot 1111 into the notch 112. Then, pull the agitator 12 away from the locking member 132 to remove the agitator 12 from the transmission member 11.

[0054] By setting a notch 112, the protrusion 1211 can easily enter or exit the slot 1111 through the notch 112, thereby realizing the installation and disassembly of the mixing component 12. The whole process does not require any tools, which not only simplifies the disassembly and assembly steps and reduces the requirements for operators, but also shortens the disassembly and assembly time and improves the convenience and efficiency of disassembly and assembly.

[0055] In one embodiment, see Figure 4 The notch 112 includes a first opening 1121 and a second opening 1122. The first opening 1121 extends axially along the transmission member 11 and penetrates the end face of the second end of the transmission member 11. The second opening 1122 is located between the first opening 1121 and the slot 1111, and extends circumferentially along the transmission member 11, communicating with both the first opening 1121 and the slot 1111. It can be understood that the first opening 1121 and the second opening 1122 communicate to form an inverted L-shape.

[0056] During installation, the locking protrusion 1211 first enters the first opening 1121, and then the stirring component 12 is rotated. The locking protrusion 1211 then enters the locking groove 1111 from the first opening 1121 through the second opening 1122, thus installing the stirring component 12. During disassembly, the stirring component 12 is rotated in the opposite direction, and the locking protrusion 1211 exits through the second opening 1122 back into the first opening 1121, thus disassembling the stirring component 12.

[0057] In one embodiment, multiple protrusions 1211 and slots 1111 are provided, and the multiple protrusions 1211 and slots 1111 are engaged one-to-one. In this way, the reliability of the connection between the transmission member 11 and the stirring member 12 can be improved, and the stirring member 12 can be prevented from becoming loose from the transmission member 11 during high-speed rotation.

[0058] Furthermore, multiple protrusions 1211 are spaced apart circumferentially along the stirring member 12, and multiple slots 1111 are spaced apart circumferentially along the drive shaft.

[0059] In this embodiment, see Figure 4 and Figure 7 The transmission component 11 has two slots 1111 and two notches 112. The two slots 1111 and the two notches 112 are centrally symmetrical. The stirring shaft has two protrusions 1211. The two protrusions 1211 are centrally symmetrical and are positioned in the two slots 1111 respectively through the notches 112.

[0060] In one embodiment, see Figure 1 and Figure 3 The stirring device 10 also includes a housing 16. A transmission component 11 passes through the housing 16. The transmission component 11 is provided with a bearing, and the transmission component 11 is connected to the housing 16 through the bearing.

[0061] By setting up the housing 16, which serves as the basic structure of the entire stirring device 10, the housing 16 provides an installation reference and support for the transmission component 11 and the stirring component 12, ensuring overall rigidity. At the same time, the housing 16 can also form a closed space, which can effectively isolate the internal transmission components from the external environment and protect the internal components.

[0062] Since the transmission component 11 is connected to the housing 16 via a bearing, sliding friction is converted into rolling friction, which reduces the resistance and friction loss during the rotation of the transmission component 11, making the transmission of driving force more efficient and stable, and reducing heat loss caused by frictional heat generation. The bearing can provide high-precision rotation guidance for the transmission component 11, effectively constraining the radial and axial movement of the transmission component 11, ensuring the trajectory accuracy of the stirring end, and making the stirring process more stable.

[0063] In this embodiment, see Figure 3The shell 16 has a first opening 161 and a second opening 162, which are located at opposite ends of the shell 16 along the axial direction of the stirring member 12. Two bearings are provided: a first bearing 17 and a second bearing 18. The first bearing 17 is located at the first opening 161, and the second bearing 18 is located at the second opening 162. Thus, the shell 16, the first bearing 17, and the second bearing 18 form a closed space.

[0064] In one embodiment, see Figure 3 The second end of the transmission component 11 is provided with a limiting boss 113, which is located outside the housing 16 and abuts against the second bearing 18. During installation, the first end of the agitator 12 is inserted into the transmission component 11, and the agitator 12 is pushed along its axial direction until the limiting boss 113 abuts against the second bearing 18. By abutting against the second bearing 18, the limiting boss 113 provides a mechanical stop for the insertion depth of the agitator 12, ensuring the consistency of the agitator 12 during each installation. In addition, it can automatically correct the axial installation reference of the agitator 12, ensuring the concentricity and overall stability of the agitator 12, and reducing vibration and wear caused by installation errors.

[0065] Further, see Figure 3 Both the first latching part 111 and the second latching part 121 are located outside the housing 16, and the limiting boss 113 is located on the side of the first latching part 111 facing the first end of the transmission member 11. This arrangement facilitates operation and observation, avoids complex force transmission to the housing 16, and also eliminates the need to open or disassemble the housing 16 during maintenance and repair, thus improving the convenience of maintenance.

[0066] In one embodiment, see Figure 3 The stirring device 10 also includes a transmission wheel 19, which is disposed on the transmission component 11. The transmission wheel 19 is in transmission cooperation with the drive device. Specifically, the transmission wheel 19 is disposed inside the housing 16, and the transmission wheel 19 is sleeved on the transmission component 11 and fixedly connected to the transmission component 11.

[0067] In use, the drive device drives the transmission wheel 19 to rotate. Since the transmission wheel 19 is fixedly connected to the transmission component 11, and the transmission component 11 is fixedly connected to the stirring component 12, the drive device can drive the transmission component 11 to rotate around its own axis through the transmission wheel 19, thereby driving the stirring component 12 to rotate around its own axis, thus stirring the reaction solution.

[0068] Optionally, the transmission wheel 19 is a gear. It is understood that the transmission component 11 is driven by a drive device outside the housing 16 via a gear.

[0069] Optionally, the transmission wheel 19 is a pulley. It is understood that the transmission component 11 is connected to the drive device outside the housing 16 via the pulley.

[0070] Of course, in other embodiments, the transmission wheel 19 may not be provided, and the transmission component 11 may be directly driven by a motor.

[0071] In one embodiment, see Figure 1 and Figure 3 The side wall of the housing 16 is provided with a clearance opening 163. The clearance opening 163 is used for connecting the drive device outside the housing 16 to the transmission component 11. By providing the clearance opening 163, it is convenient for part of the drive device to enter the housing 16 through the clearance opening 163 and connect with the transmission component 11, avoiding installation interference problems.

[0072] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0073] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0074] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0075] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0076] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0077] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A stirring device, characterized in that, include: The transmission component is provided with a first engaging portion; A stirring component, wherein the stirring component is provided with a second locking portion, and the first locking portion engages with the second locking portion to position the stirring component; and A clamping mechanism is used to apply axial pressure to the stirring component so that the second locking portion presses against the first locking portion.

2. The stirring device according to claim 1, characterized in that, The stirring device includes a locking element and an elastic element. The locking element is connected to the first end of the transmission element; one end of the elastic element is connected to the locking element, and the other end of the elastic element is connected to the stirring element.

3. The stirring device according to claim 2, characterized in that, The stirring device further includes a pressing member, which is disposed between the stirring member and the elastic member. One end of the pressing member is connected to the first end of the stirring member, and the other end of the pressing member is connected to the elastic member.

4. The stirring device according to claim 1, characterized in that, The transmission component has an inner hole that extends through the transmission component along its axial direction. The first end of the stirring element is located in the inner hole, and the second end of the stirring element is designated as the stirring section.

5. The stirring device according to claim 1, characterized in that, At least one of the first latching portion and the second latching portion is provided with a latching groove, and at least the other of the first latching portion and the second latching portion is provided with a latching protrusion, the latching protrusion being disposed within the latching groove.

6. The stirring device according to claim 5, characterized in that, The slot is located at the second end of the transmission component; The second end of the transmission component is also provided with a notch, which communicates with the slot and is used to allow the card protrusion to enter the slot.

7. The stirring device according to claim 6, characterized in that, The notch includes a first opening and a second opening. The first opening extends along the axial direction of the transmission member and penetrates the end face of the second end of the transmission member. The second opening is located between the first opening and the slot, and the second opening communicates with the first opening and the slot.

8. The stirring apparatus according to any one of claims 1 to 7, characterized in that, The stirring device also includes a housing, the transmission component passes through the housing, the transmission component is provided with a bearing, and the transmission component is connected to the housing through the bearing.

9. The stirring device according to claim 8, characterized in that, Both the first and second locking parts are located outside the housing; the second end of the transmission component is also provided with a limiting boss, which is located outside the housing and abuts against the bearing.

10. A sample analyzer, characterized in that, Includes the stirring device as described in any one of claims 1 to 9.

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