Code scanning device and sample analyzer

By using a rotating component in the scanning device that works in a rotating component with the first drive member, the first rolling member, the second drive member and the clamping component in the code scanning device, the problem of complex structure and high cost of the rotating component in the prior art is solved, and the test tube is realized Correct identification of codes and normal transport of scheduling equipment, simple structure, efficient work and low cost.

CN222506907UActive Publication Date: 2025-02-18SHENZHEN COMEN MEDICAL INSTR
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Patent Information

Application Number
CN202420240877.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-31
Publication Date
2025-02-18
Estimated Expiration
2034-01-31

AI Technical Summary

Technical Problem

In the prior art, the rotating components on the code scanning device have a complex structure, resulting in high cost and inconvenient use.

Method used

Using a rotating assembly that works in conjunction with the first drive member, the first rolling member, the second drive member and the clamping member, the clamping member presses the test tube on the first rolling member by driving the second drive member, and the first drive member is Drive the first rolling member to rotate, and then drive the test tube to rotate, so that the marking on the test tube enters the identification area of ​​the code scanner.

Benefits of technology

It realizes the correct identification of test tube marking and ensures the normal transport of the dispatching equipment, with a simple structure, efficient work and low cost.

✦ Generated by Eureka AI based on patent content.

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Abstract

The embodiment of the utility model provides a code scanning device and sample analyzer, including mounting rack, code scanner and rotatory subassembly, be equipped with the accommodation space of test tube rack on the mounting rack, the code scanner is used for identifying the code on the test tube, and the rotatory subassembly is used for rotating the code on the test tube. The rotating assembly comprises a first driving part, a second driving part, a first rolling part and a clamping assembly, the first rolling part is connected with the output end of the first driving part, the clamping assembly is connected with the output end of the second driving part, the clamping assembly is located on one side of a test tube, and the first rolling part is connected with the output end of the second driving part. The first rolling part is located on the other side of the test tube, the clamping assembly can be driven by the second driving part to move so as to press the test tube on the first rolling part, and the first driving part is used for driving the first rolling part to move so as to drive the test tube to rotate. And the code on the test tube enters the identification area of the code scanner. The code scanning device is simple in structure and efficient in work.
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Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and in particular to a code scanning device and a dispatching device. Background Art

[0002] The sample analyzer is used to sample and analyze various medical samples. The samples are generally stored in test tubes, and multiple test tubes are placed on a test tube rack. Generally speaking, the test tubes in the test tube rack need to be scanned by the scanning device on the sample analyzer in order to read the information of the sample in the test tube, so as to determine to which kind of analysis device the sample needs to be transported. In order to ensure that the code on the test tube can be correctly scanned by the scanner, a rotating component is usually provided on the scanning mechanism, which is used to rotate the test tube so that the code on the test tube can enter the recognition area of ​​the scanner. The rotating component in the prior art has a complex structure, which affects its use. Utility Model Content

[0003] The embodiment of the utility model provides a code scanning device and a sample analyzer including the code scanning device, which are used to solve the problem of complex structure and high cost of the rotating component on the code scanning device in the prior art.

[0004] According to the first aspect, an embodiment of the utility model provides a code scanning device, including a mounting frame, a code scanner and a rotating assembly, wherein the mounting frame is formed with a accommodating space for placing a test tube rack, the code scanner is used to identify the code on the test tube, and the rotating assembly includes a first driving member, a second driving member, a first rolling member and a clamping assembly, the first rolling member is connected to the output end of the first driving member, the clamping assembly is connected to the output end of the second driving member, the clamping assembly is located on one side of the test tube, the first rolling member is located on the other side of the test tube, the clamping assembly can move under the drive of the second driving member to press the test tube against the first rolling member, and the first driving member is used to drive the first rolling member to move to drive the test tube to rotate, so that the code on the test tube enters the recognition area of ​​the code scanner.

[0005] As a further optional scheme for the code scanning device, the clamping assembly includes a clamping member, a sliding seat and an elastic member, the sliding seat is connected to the output end of the second driving member, the clamping member is slidably connected to the sliding seat, the elastic member is connected to the sliding seat and the clamping member, the force-bearing direction of the elastic member is along the movement direction of the sliding seat, the second driving member can drive the clamping member to press against the test tube through the sliding seat, and after the clamping member presses against the test tube, it slides relative to the sliding seat, so that the elastic member is deformed, and the elastic member generates elastic force to push the clamping member to press the test tube.

[0006] As a further optional scheme for the code scanning device, the sliding seat includes a bottom, a first mounting portion connected to the bottom, and a second mounting portion connected to the bottom, the bottom is slidably connected to the mounting frame, the first mounting portion and the second mounting portion are spaced apart, the first mounting portion is closer to the accommodating space than the second mounting portion, and both the first mounting portion and the second mounting portion are provided with through holes; the clamping member includes a rod portion, a connecting portion and a rolling portion, the rod portion is slidably inserted through the through holes of the first mounting portion and the second mounting portion, the portion of the rod portion protruding from the first mounting portion is connected to the connecting portion, and the rolling portion is connected to the connecting portion; the elastic member is sleeved on the portion of the rod portion located between the connecting portion and the first mounting portion, and the elastic member is connected to the connecting portion and the first mounting portion.

[0007] As a further optional scheme of the code scanning device, the number of the rod portions is at least two, the number of through holes of the first mounting portion, the number of through holes of the second mounting portion, and the number of the elastic members are the same as the number of the rod portions; and / or, the number of the rolling portions is two.

[0008] As a further optional scheme of the code scanning device, the code scanning device also includes an eccentric piece, a sliding groove is provided on the sliding seat, the eccentric piece is connected to the output end of the second driving member, the eccentric piece has a matching portion, the matching portion can be slidably inserted in the sliding groove, and the matching portion and the output end of the second driving member are non-coaxially arranged.

[0009] As a further optional solution of the code scanning device, the slide groove is in a runway shape.

[0010] As a further optional solution of the code scanning device, the matching portion includes a mounting shaft and a second rolling element sleeved on the mounting shaft.

[0011] As a further optional solution of the code scanning device, the rotating component also includes a sensor component, and the sensor component is arranged on the motion track of the sliding seat.

[0012] As a further optional solution of the code scanning device, the code scanning device also includes a static-eliminating brush, and the static-eliminating brush is used to remove static electricity on the test tube.

[0013] According to the second aspect, an embodiment of the utility model further provides a sample analyzer, comprising a detection device and a code scanning device as described in any of the above embodiments, wherein the detection device is used to detect the sample in the test tube.

[0014] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0015] The rotating component of the code scanning device adopts a first driving member, a first rolling member, a second driving member and a clamping member to work together. The clamping member generates a pressing force to press the test tube against the side wall of the first rolling member. The first driving member drives the first rolling member to rotate, and then drives the test tube to rotate, so that the code on the test tube can enter the recognition area of ​​the code scanner, so that the information about the sample in the test tube can be correctly read, ensuring that the scheduling equipment can normally transport the test tube rack. The structure is simple, the operation is efficient, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] in:

[0018] Figure 1 This is a schematic diagram of the structure of a code scanning device in one embodiment of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of a rotating assembly in one embodiment of the utility model;

[0020] Figure 3 This is a partial structural schematic diagram of a clamping assembly in one embodiment of the utility model;

[0021] Figure 4 This is a partial structural schematic diagram of a clamping assembly in one embodiment of the utility model;

[0022] Figure 5 This is a partial structural schematic diagram of a clamping assembly in one embodiment of the utility model;

[0023] Figure 6 This is a partial structural schematic diagram of a clamping assembly in one embodiment of the utility model;

[0024] In the figure: 10-mounting frame; 11-slide rail; 12-first side plate; 13-second side plate; 14-roller bracket; 20-barcode scanner; 30-rotating assembly; 31-first driving member; 32-first rolling member; 33-clamping assembly; 331-clamping member; 3311-rod; 3312-connecting portion; 3313-rolling portion; 332-elastic member; 333-sliding seat; 3331-first part; 3332-second part; 33321-bottom; 33322-first mounting portion; 33323-second mounting portion; 334-eccentric member; 3341-matching portion; 33411-mounting shaft; 33412-second rolling member; 335-slide; 34-sensing assembly; 341-reverse-beam sensor; 342-baffle; 35-second driving member; 40-antistatic brush. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] The embodiment of the utility model provides a code scanning device and a sample analyzer including the code scanning device, which are used to solve the problem of complex structure and high cost of the rotating components on the code scanning device in the prior art.

[0029] In an embodiment of the utility model, the sample analyzer includes a detection device and a code scanning device. The detection device is used to detect the sample in the test tube, and the code scanning device is used to scan the code on the test tube.

[0030] Please refer to Figure 1and Figure 2 The code scanning device includes a mounting frame 10, a code scanner 20 and a rotating assembly 30. The mounting frame 10 is formed with a storage space for placing a test tube rack. The code scanner 20 is used to identify the code on the test tube. The rotating assembly 30 includes a first driving member 31, a second driving member 35, a first rolling member 32 and a clamping assembly 33. The first rolling member 32 is connected to the output end of the first driving member 31, and the clamping assembly 33 is connected to the output end of the second driving member 35. The clamping assembly 33 is located on one side of the test tube, and the first rolling member 32 is located on the other side of the test tube. The clamping assembly 33 can move under the drive of the second driving member 35 to press the test tube against the first rolling member 32. The first driving member 31 is used to drive the first rolling member 32 to move to drive the test tube to rotate so that the code on the test tube enters the recognition area of ​​the code scanner.

[0031] The rotating assembly 30 of the code scanning device adopts the cooperation of the first driving member 31, the first rolling member 32, the second driving member 35 and the clamping assembly 33. The clamping assembly 33 generates a pressing force to press the test tube against the side wall of the first rolling member 32. The first driving member 31 drives the first rolling member 32 to rotate, and then drives the test tube to rotate, so that the code on the test tube can enter the recognition area of ​​the code scanner 20, so that the information about the sample in the test tube can be correctly read, ensuring that the scheduling equipment can normally transport the test tube rack. The structure is simple, the operation is efficient, and the cost is low.

[0032] In one embodiment, the mounting frame 10 includes a bottom plate (not shown), a first side plate 12 and a second side plate 13. The first side plate 12 and the second side plate 13 are arranged parallel to and spaced apart from each other on the bottom plate, and the gap between the first side plate 12 and the second side plate 13 forms a receiving space for placing a test tube. In this way, the mounting frame 10 has a simple structure, is easy to manufacture, and can save production costs.

[0033] In one embodiment, a connecting hole connected to the accommodating space is provided on the first side plate 12 and / or the second side plate 13, and the mounting frame further includes a roller bracket 14 and a roller (not shown in the figure). The roller bracket 14 is connected to the first side plate 12 and / or the second side plate 13 and is located on the side of the first side plate 12 and / or the second side plate 13 that is away from the accommodating space. The roller is connected to the roller bracket 14 and exposed in the accommodating space through the connecting hole. The roller is used to contact with the test tube rack to improve the stability and smoothness of the test tube rack during movement and reduce the possibility of the test tube rack getting stuck during movement.

[0034] In one embodiment, the clamping assembly 33 includes a clamping member 331 , and the clamping member 331 is connected to an output end of the second driving member 35 , and the second driving member 35 drives the clamping member 331 to move.

[0035] In another embodiment, please refer to Figure 3 to Figure 4The clamping assembly 33 includes a clamping member 331, a sliding seat 333 and an elastic member 332. The sliding seat 333 is connected to the output end of the second driving member 35. The clamping member 331 is slidably connected to the sliding seat 333. The elastic member 332 is connected to the sliding seat 333 and the clamping member 331. The force-bearing direction of the elastic member 332 is along the movement direction of the sliding seat 333. The second driving member 35 can drive the clamping member 331 to press against the test tube through the sliding seat 333. After the clamping member 331 presses against the test tube, it slides relative to the sliding seat 333, so that the elastic member 332 is deformed. The elastic member 332 generates elastic force to push the clamping member 331 to press the test tube.

[0036] As for the material of the elastic member 332 , it can be generally selected from elastic materials such as springs, rubbers and silicone rubbers.

[0037] In this embodiment, the clamping assembly 33 includes an elastic member 332. After the clamping member 331 contacts the test tube, the clamping member 331 moves relative to the sliding seat 333 to drive the elastic member 332 to deform, so that the elastic force on the elastic member 332 gradually increases, that is, the pressure of the clamping member 331 on the test tube gradually increases, thereby avoiding the situation where the clamping member 331 hits the test tube and causes damage to the test tube; in addition, by selecting the elastic coefficient of the elastic member 332 and / or changing the size of the movement stroke of the sliding seat 333, the size of the elastic force generated by the elastic member 332 can be changed, thereby improving the stability of the clamped test tube rack while reducing the possibility of the test tube rack being crushed.

[0038] In a specific embodiment, the sliding seat 333 includes a bottom 33321, a first mounting portion 33322 connected to the bottom 33321, and a second mounting portion 33323 connected to the bottom 33321, the bottom 33321 is slidably connected to the mounting frame 10, the first mounting portion 33322 and the second mounting portion 33323 are arranged at intervals, the first mounting portion 33322 is closer to the accommodating space than the second mounting portion 33323, and the first mounting portion 33322 and the second mounting portion 33323 are both provided with through holes; the clamping member 331 includes The rod portion 3311 includes a connecting portion 3312 and a rolling portion 3313. The rod portion 3311 can be slidably inserted into the through holes of the first mounting portion 33322 and the second mounting portion 33323. The portion of the rod portion 3311 protruding from the first mounting portion 33322 is connected to the connecting portion 3312, and the rolling portion 3313 is connected to the connecting portion 3312. The elastic member 332 is sleeved on the portion of the rod portion 3311 located between the connecting portion 3312 and the first mounting portion 33322, and the elastic member 332 is connected to the connecting portion 3312 and the first mounting portion 33322.

[0039] In this embodiment, the rod 3311 of the clamp 331 is slidably connected to the sliding seat through the through hole on the sliding seat 333. The structure is simple and easy to implement. The first mounting portion 33322 and the second mounting portion 33323 support the rod 3311, which can improve the stability of the structure. The rolling portion 3313 is used to contact the test tube, which is conducive to reducing the resistance of the test tube during rotation, making the rotation process of the test tube smoother, thereby improving the success rate of scanning the code. The elastic member 332 is sleeved on the rod 3311, which can limit the deformation direction of the elastic member 332 to the moving direction of the clamp 331 as much as possible, so that the elastic force generated by the elastic member 332 acts on the clamp 331 as much as possible, and then acts on the test tube rack, which is conducive to improving the stability of the clamp test tube rack.

[0040] In a more specific embodiment, the number of the rod portions 3311 is at least two, and the number of through holes of the first mounting portion 33322 , the number of through holes of the second mounting portion 33323 , and the number of elastic members 332 are the same as the number of the rod portions 3311 .

[0041] Providing two or more rod portions 3311 can improve the stability of the structure, which is beneficial to improving the stability of the movement of the clamping member 331, and further improving the reliability of the operation of the clamping assembly.

[0042] In a further specific embodiment, there are at least two elastic members 332 , and the number of the elastic members 332 corresponds to the number of the rod portions 3311 .

[0043] By providing two or more elastic members 332, the elastic force generated by the elastic member 332 can act on the connecting portion 3312 at multiple points, making the force on the connecting portion 3312 more uniform, and further making the force of the rolling portion 3313 acting on the test tube more uniform, thereby improving the stability of pushing the test tube and preventing the test tube from being damaged due to concentrated force.

[0044] In a more specific embodiment, there are two rolling parts 3313. Providing two rolling parts 3313 can increase the contact area between the rolling part 3313 and the test tube, which is conducive to making the test tube rotate more smoothly, thereby improving the success rate of code scanning.

[0045] In a more specific embodiment, a slide rail 11 is disposed on the mounting frame 10 , and the sliding seat 333 is slidably connected to the mounting frame 10 by cooperating with the slide rail 11 .

[0046] In one embodiment, the code scanning device also includes a transmission mechanism, the second driving member 35 can output rotational motion, the transmission mechanism is connected between the clamping assembly 33 and the output end of the second driving member 35, and the transmission mechanism is used to convert the rotational motion output by the second driving member 35 into reciprocating linear motion of the clamping assembly 331.

[0047] In this embodiment, the second driving member 35 can be selected from a stepping motor and a servo motor.

[0048] In a specific embodiment, please refer to Figure 5 and Figure 6 The transmission mechanism includes an eccentric member 334, a sliding groove 335 is provided on the sliding seat 333, the eccentric member 334 is connected to the output end of the second driving member 35, the eccentric member 334 has a matching portion 3341, the matching portion 3341 can be slidably inserted in the sliding groove 335, the clamping member 331 is slidably connected to the sliding seat 333, and the matching portion 3341 is non-coaxially arranged with the output end of the second driving member 35.

[0049] Specifically, the sliding seat 333 may include a first portion 3331 and a second portion connected to the first portion 3331. The first portion 3331 and the second portion 3332 of the sliding seat 333 may be integrally formed or connected by other connecting parts, which is not limited here. The first portion 3331 of the sliding seat 333 is provided with a slide groove 335, and the second portion 3332 of the sliding seat 333 includes a bottom 33321, a first mounting portion 33322 connected to the bottom 33321, and a second mounting portion 33323 connected to the bottom 33321.

[0050] In a more specific embodiment, the matching portion 3341 includes a mounting shaft 33411 and a second rolling member 33412 sleeved on the mounting shaft. Here, the second rolling member 33412 may be selected from, but is not limited to, a roller and a bearing.

[0051] In a more specific embodiment, the chute 335 is configured as a runway. Specifically, the wall of the chute 335 includes two straight segments and two arc segments, the two straight segments are arranged in parallel and spaced apart, the two arc segments are connected to both ends of the two straight segments, and the arc segments are smoothly connected to the straight segments.

[0052] Setting the slide groove 335 to be in a track shape can make the movement process of the matching portion 3341 smoother and more stable, thereby making the movement process of the sliding seat 333 smoother and more stable.

[0053] In another specific embodiment, the transmission mechanism includes a gear and a rack. The gear is connected to the output end of the second driving member 35, and the rack is connected to the clamping assembly 33. When the output end of the second driving member 35 rotates, the gear is driven to rotate. The gear and the rack are meshed and connected. The rotation of the gear is converted into linear motion of the rack, and the rack further drives the clamping assembly 33 to perform linear motion.

[0054] In another embodiment, the second driving member 35 directly outputs a linear motion to drive the clamping assembly 33 to perform a linear motion. In this embodiment, the second driving member 35 can be selected from a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder.

[0055] In one embodiment, the rotating assembly 30 further includes a sensor assembly 34, which is disposed on the motion track of the sliding seat 333. The sensor assembly 34 is used to identify the position of the clamping assembly 33 to mark the initial point for the motion of the clamping assembly 33. By providing the sensor assembly 34, it is beneficial to automatically control the code scanning device.

[0056] In a more specific embodiment, the sensing assembly 34 includes a through-beam sensor 341 and a baffle 342. The baffle 342 is connected to the clamping assembly 33 to follow the movement of the clamping assembly 33. The baffle 342 can enter the sensing slot of the through-beam sensor 341 after the clamping assembly 33 moves away from the test tube rack by a preset distance.

[0057] In another more specific embodiment, the sensor assembly 34 includes a travel switch, which is connected to the mounting bracket 10, and the clamping assembly 33 can contact the travel switch after being away from the test tube by a preset distance.

[0058] In yet another more specific embodiment, the sensing component 34 includes a Hall sensor, and the clamping component 33 is provided with a Hall sensor that can be triggered after being away from the test tube rack by a preset distance.

[0059] In one embodiment, the barcode scanning device further includes a destaticizing brush 40, which is used to remove static electricity on the test tube.

[0060] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0061] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent application. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A code scanning device, characterized in that: It includes a mounting frame, a barcode scanner and a rotating assembly, wherein a accommodating space for placing a test tube rack is formed on the mounting frame, the barcode scanner is used to identify the code on the test tube, and the rotating assembly includes a first driving member, a second driving member, a first rolling member and a clamping assembly, the first rolling member is connected to the output end of the first driving member, the clamping assembly is connected to the output end of the second driving member, the clamping assembly is located on one side of the test tube, the first rolling member is located on the other side of the test tube, the clamping assembly can move under the drive of the second driving member to press the test tube against the first rolling member, and the first driving member is used to drive the first rolling member to move to drive the test tube to rotate, so that the code on the test tube enters the recognition area of ​​the barcode scanner.

2. The code scanning device according to claim 1, characterized in that: The clamping assembly includes a clamping member, a sliding seat and an elastic member. The sliding seat is connected to the output end of the second driving member, the clamping member is slidably connected to the sliding seat, the elastic member is connected to the sliding seat and the clamping member, the force-bearing direction of the elastic member is along the movement direction of the sliding seat, the second driving member can drive the clamping member to press against the test tube through the sliding seat, and after the clamping member presses against the test tube, it slides relative to the sliding seat, so that the elastic member is deformed, and the elastic member generates elastic force to push the clamping member to press the test tube.

3. The code scanning device according to claim 2, characterized in that: The sliding seat comprises a bottom, a first mounting portion connected to the bottom, and a second mounting portion connected to the bottom, the bottom is slidably connected to the mounting frame, the first mounting portion and the second mounting portion are spaced apart, the first mounting portion is closer to the accommodation space than the second mounting portion, and both the first mounting portion and the second mounting portion are provided with through holes; The clamping member comprises a rod portion, a connecting portion and a rolling portion, wherein the rod portion is slidably inserted into the through holes of the first mounting portion and the second mounting portion, a portion of the rod portion protruding from the first mounting portion is connected to the connecting portion, and the rolling portion is connected to the connecting portion; The elastic member is sleeved on a portion of the rod portion located between the connecting portion and the first mounting portion, and the elastic member is connected to the connecting portion and the first mounting portion.

4. The code scanning device according to claim 3, characterized in that: The number of the rods is at least two, the number of through holes in the first mounting portion, the number of through holes in the second mounting portion, and the number of the elastic members are the same as the number of the rods; and / or, The number of the rolling parts is two.

5. The code scanning device according to any one of claims 2 to 4, characterized in that: The code scanning device also includes an eccentric member, a sliding groove is provided on the sliding seat, the eccentric member is connected to the output end of the second driving member, the eccentric member has a matching portion, the matching portion can be slidably inserted in the sliding groove, and the matching portion and the output end of the second driving member are non-coaxially arranged.

6. The code scanning device according to claim 5, characterized in that: The chute is in a racetrack shape.

7. The code scanning device according to claim 5, characterized in that: The matching portion includes a mounting shaft and a second rolling element sleeved on the mounting shaft.

8. The code scanning device according to claim 2, characterized in that: The rotating assembly further comprises a sensor assembly, and the sensor assembly is arranged on the motion track of the sliding seat.

9. The code scanning device according to claim 1, characterized in that: The code scanning device also includes a static-eliminating brush, which is used to remove static electricity on the test tube.

10. A sample analyzer, characterized in that: It comprises a detection device and a code scanning device as described in any one of claims 1 to 9, wherein the detection device is used to detect the sample in the test tube.