Grabbing mechanism, grabbing device and sample analyzer

Abstract

The utility model relates to a grabbing mechanism, a grabbing device and a sample analyzer. The grabbing mechanism comprises a mounting base; the two clamping jaws are oppositely arranged and rotatably mounted on the mounting seat, and a clamping position is defined by the two clamping jaws; the elastic piece is connected between the two clamping jaws and used for providing pre-tightening force for closing the two clamping jaws; and the shielding piece is mounted on the mounting seat and shields one side, facing the clamping position, of the elastic piece. According to the grabbing mechanism, the grabbing device and the sample analyzer, the reliability of opening or closing of the clamping jaws of the grabbing mechanism can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a grasping mechanism, a grasping device and a sample analyzer. Background Art

[0002] During the in vitro diagnosis process, it is usually necessary to use a gripping mechanism to transfer reaction vessels such as reaction tubes, reaction cups, and magnetic bead cups containing samples between various workstations to complete the test. Moreover, after the test is completed, the gripping device also needs to transfer the reaction container to the cup throwing channel and perform the cup throwing action. However, as the test volume accumulates, the mixed liquid formed by the mixture of samples and reagents in the reaction container is shaken, collided, impacted, and other factors during the cup throwing process. The mixed liquid in the reaction container splashes out of the reaction container in the form of large or small droplets, and may accumulate on the gripping device. The accumulated droplets condense into lumps in the air, causing the gripping device's jaws to be unable to open or close smoothly, affecting the gripping and release of the reaction container, and then causing the entire machine to fail. Utility Model Content

[0003] Based on this, it is necessary to provide a gripping mechanism, a gripping device and a sample analyzer that can improve the reliability of opening or closing the gripping claws of the gripping mechanism in order to address the above problems.

[0004] A gripping mechanism, comprising:

[0005] Mounting seat;

[0006] Two clamping jaws arranged opposite to each other can be rotatably mounted on the mounting seat, and the two clamping jaws define a clamping position;

[0007] an elastic member connected between the two clamping jaws and used to provide a pre-tightening force for closing the two clamping jaws; and

[0008] A shielding member is installed on the mounting seat and shields a side of the elastic member facing the clamping position.

[0009] In some embodiments, the clamping jaws have a rotating portion and a clamping portion, and the clamping portions of the two clamping jaws define the clamping position;

[0010] The bottom end of the mounting seat is provided with a mounting notch, the grabbing mechanism further comprises a rotating shaft, the rotating shaft and the rotating part are both arranged in the mounting notch, and the rotating part is rotatably connected with the mounting seat through the rotating shaft, and the clamping part and the elastic member are located outside the mounting notch;

[0011] The shielding member shields a side of the installation notch facing the clamping position.

[0012] In some embodiments, the shielding member and the clamping portion are spaced apart, and the distance between the shielding member and the clamping portion is L, 0.2 mm≤L≤1 mm.

[0013] In some embodiments, the shielding member includes a shielding cover and a shielding plate. The shielding cover is disposed outside the mounting base and shields the side of the mounting base facing the clamping position. The shielding plate is connected to the shielding cover and shields the side of the elastic member facing the clamping position.

[0014] In some embodiments, the shielding cover comprises a panel, a top plate and two side plates, the two side plates are arranged opposite to each other, and the two side plates and the top plate are connected to the panel; the side of the mounting seat (111) facing the clamping position is defined as a first side, the panel shields the first side, the top plate shields the top side of the mounting seat, and the two side plates respectively shield the mounting seat at two opposite sides adjacent to the top side and the first side;

[0015] The panel, the top plate and the two side plates are arranged to form a mounting opening, and the mounting opening is located on a side of the mounting seat facing away from the clamping position.

[0016] In some embodiments, the shielding plate is formed by bending the bottom end of the panel.

[0017] In some embodiments, the gripping mechanism further includes a detachable component, and the shielding component is detachably connected to the mounting seat via the detachable component.

[0018] A grabbing device, comprising:

[0019] A gripping mechanism as described in any one of the above embodiments; and

[0020] A driving mechanism is connected to the grabbing mechanism in a transmission manner and is used to drive the grabbing mechanism to move in three dimensions.

[0021] A sample analyzer, comprising:

[0022] A mounting platform having a cup throwing channel thereon; and

[0023] As described in the above embodiment, the grabbing device is arranged on the mounting platform, and the grabbing device is used to transfer the reaction container after the detection to the cup throwing channel.

[0024] In some embodiments, the cup channel has a first wall and a second wall that are arranged opposite to each other, and the grasping device transfers the reaction container after the detection into the cup channel and abuts against the first wall. The sample analyzer also includes a shock absorber, and the shock absorber at least covers the second wall.

[0025] The above-mentioned gripping mechanism, gripping device and sample analyzer, and in the present application, by setting a shielding member to shield the side of the elastic member facing the clamping position, due to the shielding of the shielding member, the splashed droplets directly adhere to the shielding member and are difficult to contact the elastic member. Therefore, the droplets will not accumulate on the elastic member, and the elastic member can always provide a pre-tightening force for the two clamping jaws so that the two clamping jaws can be smoothly opened or closed, so that the gripping mechanism maintains its gripping function. In addition, when the probability of the elastic member contacting the droplets is reduced, the possibility of corrosion and fracture of the elastic member is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural schematic diagram of a grabbing mechanism in one embodiment of the present application;

[0027] Figure 2 for Figure 1 A cross-sectional view of the grabbing mechanism shown along the AA direction;

[0028] Figure 3 for Figure 1 A right side view of the grabbing mechanism shown;

[0029] Figure 4 for Figure 1 An exploded view of the gripping mechanism shown;

[0030] Figure 5 for Figure 1 A schematic structural diagram of a shielding member in a grabbing mechanism shown;

[0031] Figure 6 A top view of a sample analyzer in one embodiment of the present application;

[0032] Figure 7 for Figure 6 A left side view of the sample analyzer is shown;

[0033] Figure 8 for Figure 7 A cross-sectional view of the sample analyzer along the CC direction is shown;

[0034] Fig. 9 for Figure 8 An enlarged schematic diagram of a local structure D in the sample analyzer shown;

[0035] Fig.10 This is a structural diagram of the cooperation between the grabbing mechanism and the mounting platform in one embodiment of the present application.

[0036] Figure Number:

[0037] 1. Sample analyzer; 2. Reaction container;

[0038] 10. Grabbing device; 20. Mounting platform; 30. Shock-absorbing member;

[0039] 11. Grabbing mechanism; 12. Mixing mechanism; 13. Driving mechanism;

[0040] 111, mounting seat; 1111, mounting notch; 1112, first mounting hole; 1113, first screw hole; 112, clamping claw; 1121, rotating part; 1122, clamping part; 1123, clamping position; 1124, second mounting hole; 113, elastic member; 114, shielding member; 1141, shielding cover; 1141a, panel; 1141b, top plate; 1141c, side plate; 1141d, mounting opening; 1142, shielding plate; 1143, second screw hole; 115, rotating shaft;

[0041] 21. Cup throwing channel; 22. Cup throwing mouth; 23. First wall surface; 24. Second wall surface;

[0042] 31. Part 1; 32. Part 2. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0044] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed on" 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", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0049] See also Figures 1 to 4 The present application provides a gripping mechanism 11, which is used to grip a reaction container 2. The gripping mechanism 11 includes a mounting seat 111, two clamping jaws 112, an elastic member 113 and a shielding member 114. The two clamping jaws 112 are arranged opposite to each other and can be rotatably mounted on the mounting seat 111. The two clamping jaws 112 define a clamping position 1123. The elastic member 113 is connected between the two clamping jaws 112 and is used to provide a pre-tightening force for closing the two clamping jaws 112. The shielding member 114 is installed on the mounting seat 111 and shields the side of the elastic member 113 facing the clamping position 1123.

[0050] Specifically, the clamping jaws 112 are provided with feature parts, and the feature parts of the two clamping jaws 112 are arranged opposite to each other and define a clamping position 1123. The feature parts on each clamping jaw 112 can be one or more, and the same feature parts on the two clamping jaws 112 define a clamping position 1123, and different feature parts define different clamping positions 1123 to adapt to different reaction containers 2. All feature parts on the same clamping jaw 112 can be arranged along the thickness direction of the clamping jaw 112 (such as Figure 1 Alternatively, they may be arranged in sequence along the length direction of the clamping jaw 112 (eg, Figure 1 The two clamping jaws 112 are arranged at intervals along the width direction of the clamping jaws 112 (as indicated in the X direction in the middle). Figure 1 The Y direction is indicated in the figure).

[0051] The types of feature parts are different. Specifically, the feature parts may have different shapes, sizes, etc. Feature parts of different shapes form clamping positions 1123 of different shapes, and feature parts of different sizes form clamping positions 1123 of different sizes.

[0052] For example, taking the case where the characteristic parts on the two clamping jaws 112 are both arc surfaces, the arc surfaces on the two clamping jaws 112 are arranged opposite to each other and form a hollow cylindrical clamping position 1123 to clamp the cylindrical reaction container 2 .

[0053] It is worth mentioning that when the reaction container 2 is clamped at the clamping position 1123 , the opening of the reaction container 2 cannot be blocked, so as to facilitate adding samples or reagents into the reaction container 2 through the opening.

[0054] The elastic member 113 may be a compression spring, a tension spring or other elastic structure that can provide a pre-tightening force for closing the two clamping jaws 112 , and the pre-tightening force can ensure that the clamped reaction container 2 will not fall during the transfer process.

[0055] When the two clamping jaws 112 do not grasp the reaction container 2, the two clamping jaws 112 are closed or even closed under the action of the pre-tightening force of the elastic member 113. When the two clamping jaws 112 grasp the reaction container 2, the reaction container 2 opens the two clamping jaws 112 and clamps them into the clamping position 1123. In addition, the two clamping jaws 112 are closed or opened by rotating relative to the mounting seat 111.

[0056] The shielding member 114 may be made of metal or non-metal. To facilitate the grabbing mechanism 11 to be driven and moved by the external driving mechanism 13 to drive the reaction container 2 to be transferred, the weight of the shielding member 114 should be as light as possible.

[0057] In the process of cup tossing of the gripping mechanism 11 in the related art, the mixed liquid in the reaction container 2 splashes onto the elastic member 113 in the form of large or small droplets, and accumulates and condenses into blocks on the elastic member 113, causing the elastic member 113 to be unable to deform, and then the two clamping jaws 112 cannot be smoothly opened or closed, and the gripping function fails. For example, when the elastic member 113 is a tension spring or a compression spring, when the accumulated amount of droplets on the elastic member 113 reaches a certain level, the elastic member 113 is also prone to corrosion and fracture.

[0058] In the present application, by setting the shielding member 114 to shield the side of the elastic member 113 facing the clamping position 1123, the splashed droplets directly adhere to the shielding member 114 due to the shielding of the shielding member 114, and it is difficult to contact the elastic member 113. Therefore, the droplets will not accumulate on the elastic member 113, and the elastic member 113 can always provide a pre-tightening force for the two clamping jaws 112, so that the two clamping jaws 112 can be smoothly opened or closed, so that the grasping mechanism 11 maintains its grasping function. In addition, when the probability of the elastic member 113 contacting the droplets is reduced, the possibility of corrosion and fracture of the elastic member 113 is also reduced.

[0059] In some embodiments, the clamping jaw 112 has a rotating portion 1121 and a clamping portion 1122, and the clamping portions 1122 of the two clamping jaws 112 define a clamping position 1123; a mounting notch 1111 is provided at the bottom end of the mounting seat 111, and the gripping mechanism 11 also includes a rotating shaft 115, and the rotating shaft 115 and the rotating portion 1121 are both disposed in the mounting notch 1111, and the rotating portion 1121 is rotatably connected to the mounting seat 111 through the rotating shaft 115, and the clamping portion 1122 and the elastic member 113 are located outside the mounting notch 1111; the shielding member 114 shields the side of the mounting notch 1111 facing the clamping position 1123.

[0060] The rotating portion 1121 and the clamping portion 1122 are bent, and the elastic member 113 can be connected between the rotating portions 1121 of the two clamping jaws 112 or between the clamping portions 1122 .

[0061] The mounting seat 111 is provided with a first mounting hole 1112. There are two first mounting holes 1112, two mounting notches 1111 and two rotating shafts 115, and each corresponds to the clamping jaws 112. A second mounting hole 1124 is provided on the rotating portion 1121 of the clamping jaw 112. The rotating shaft 115 and the rotating portion 1121 of the clamping jaw 112 are located in the corresponding mounting notches 1111. The rotating shaft 115 is passed through the corresponding first mounting hole 1112 and the second mounting hole 1124, and is rotatably connected to the mounting seat 111. The provision of the rotating shaft 115 enables the clamping jaw 112 to rotate relative to the mounting seat 111, so as to realize the opening or closing of the two clamping jaws 112.

[0062] The shielding member 114 shields the side of the installation notch 1111 facing the clamping position 1123. This design can reduce the risk of the rotating shaft 115 being exposed, making it difficult for splashing droplets to splash onto the rotating shaft 115, the gap between the rotating shaft 115 and the first installation hole 1112, and the gap between the rotating shaft 115 and the second installation hole 1124 and accumulate, thereby allowing the rotating shaft 115 to maintain its rotation reliability, and the grasping process is also smoother.

[0063] In some embodiments of the present application, the shielding member 114 includes a shielding cover 1141 and a shielding plate 1142. The shielding cover 1141 is disposed outside the mounting base 111 and shields the side of the mounting base 111 facing the clamping position 1123. The shielding plate 1142 is connected to the shielding cover 1141 and shields the side of the elastic member 113 facing the clamping position 1123.

[0064] Specifically, the shielding cover 1141 is disposed outside the mounting seat 111 and shields the side of the mounting seat 111 facing the clamping position 1123, and can shield the mounting seat 111 and the rotating shaft 115 at the same time, so as to prevent the liquid droplets from splashing onto the mounting seat 111. In this way, the liquid droplets will not flow down along the mounting seat 111, and will not flow into the first mounting hole 1112 through the gap between the mounting seat 111 and the rotating portion 1121 and contact the rotating shaft 115, thereby ensuring the reliability of the rotation of the clamping jaw 112. In addition, the shielding cover 1141 is disposed outside the mounting seat 111 to facilitate the installation of the shielding member 114. The shielding plate 1142 shields the side of the elastic member 113 facing the clamping position 1123, thereby reducing the risk of splashing liquid droplets adhering to the elastic member 113 and causing the elastic member 113 to deform and fail.

[0065] Please refer again Figures 1 to 4 , and also see Figure 5 Further, in some optional embodiments of the present application, the shielding cover 1141 includes a panel 1141a, a top plate 1141b and two side plates 1141c, the two side plates 1141c are arranged opposite to each other, and the two side plates 1141c and the top plate 1141b are connected to the panel 1141a; the side of the mounting seat (111) facing the clamping position 1123 is defined as the first side, the panel 1141a blocks the first side, the top plate 1141b blocks the top side of the mounting seat 111, and the two side plates 1141c respectively block the two opposite sides of the mounting seat 111 adjacent to the top side and the first side. The panel 1141a, the top plate 1141b and the two side plates 1141c are arranged to form a mounting opening 1141d, and the mounting opening 1141d is located on the side of the mounting seat 111 facing away from the clamping position 1123.

[0066] The arrangement of the panel 1141a, the top plate 1141b and the two side plates 1141c can shield the mounting seat 111 from all sides, and the shielding effect is good, which can further prevent the risk of droplets flowing down the mounting seat 111, flowing into the first mounting hole 1112 through the gap between the mounting seat 111 and the rotating part 1121, and contacting the rotating shaft 115. In addition, the arrangement of the mounting opening 1141d can not only reduce the weight of the outer cover and achieve lightweight outer cover, but also realize the installation of the shielding cover 1141 in various ways, for example, the shielding cover 1141 can be installed from top to bottom, or from the side of the mounting seat 111 facing the clamping position 1123 to the side of the mounting seat 111 facing away from the clamping position 1123.

[0067] In some optional embodiments of the present application, the shielding plate 1142 is formed by bending the bottom end of the panel 1141a. This method can realize the integral forming of the shielding plate 1142 and the panel 1141a, facilitate the production of the shielding member 114, and reduce costs.

[0068] See also Figure 1 and Figure 2 In some optional embodiments of the present application, the shielding member 114 and the clamping portion 1122 are spaced apart, and the distance between the shielding member 114 and the clamping portion 1122 is L, 0.2mm≤L≤1mm.

[0069] The distance between the shielding member 114 and the clamping portion 1122 refers to the distance between the bottom surface of the shielding plate 1142 and the top surface of the clamping portion 1122. When the shielding member 114 and the clamping portion 1122 are spaced apart, there is no friction between the shielding member 114 and the clamping portion 1122 during the rotation process, and the opening and closing of the clamping jaws 112 will not be affected. When the distance between the shielding member 114 and the clamping portion 1122 is L and 0.2mm≤L≤1mm, the splashing droplets gather to a certain amount and fall down due to gravity. They will be adsorbed in the gap between the shielding member 114 and the clamping portion 1122 due to the capillary action of the liquid and will not flow into the elastic member 113 or the gap between the rotating shaft 115 and the mounting seat 111. After the droplets are dried and solidified, the next time the two jaws 112 rotate and open relative to the shielding member 114, the solidified droplets are knocked away, so that the splashing liquid will not affect the opening and closing of the two jaws 112, thereby ensuring that even if splashing liquid occurs, the cup grabbing and releasing action will not be affected.

[0070] See also Figure 4 In some embodiments of the present application, the gripping mechanism 11 further includes a detachable member, and the shielding member 114 is detachably connected to the mounting seat 111 through the detachable member. By providing the detachable member, the reliability and stability of the installation between the shielding member 114 and the mounting seat 111 can be improved.

[0071] For example, the detachable part can be a screw, a pin or other components. Taking the detachable part as a screw, and the top plate 1141b is detachably connected to the top surface of the mounting base 111 by a screw, a first screw hole 1113 is provided on the top surface of the mounting base 111, and a second screw hole 1143 is provided on the top plate 1141b. The screw is passed through the first screw hole 1113 and the second screw hole 1143, and is screwed into the first screw hole 1113 and the second screw hole 1143.

[0072] See also Figure 1 , Figure 6 and Figure 8 The present application also provides a grasping device 10, which includes a driving mechanism 13 and a grasping mechanism 11 as described in any one of the above embodiments. The driving mechanism 13 is transmission-connected to the grasping mechanism 11 and is used to drive the grasping mechanism 11 to move in three dimensions.

[0073] The gripping device 10 in the present application has the effects brought by any of the above-mentioned embodiments, so it will not be described in detail here.

[0074] Specifically, for example, the driving mechanism 13 is a three-axis mechanical module. The driving mechanism 13 is a conventional technical means in this field, so it is not repeated here. The driving mechanism 13 is used to drive the grasping mechanism 11 to move three-dimensionally to realize the switching of the grasping mechanism 11 between workstations, thereby facilitating the grasping mechanism 11 to grasp and transfer the reaction container 2.

[0075] In some embodiments, the gripping device 10 further includes a mixing mechanism 12, which is disposed on the driving mechanism 13, and the gripping mechanism 11 is disposed on the mixing mechanism 12. The mixing mechanism 12 can move in three dimensions under the drive of the driving mechanism 13, and the gripping mechanism 11 mixes the sample in the clamped reaction container 2 under the drive of the mixing mechanism 12.

[0076] The mixing mechanism 12 includes but is not limited to mixing methods such as bubbles, stirring, ultrasound, and vibration.

[0077] See also Figure 1 , and also see Figures 6 to 10 The present application also provides a sample analyzer 1, which can be a coagulation analyzer, a chemiluminescence analyzer, or other instrument used for in vitro detection.

[0078] The sample analyzer 1 includes a mounting platform 20 and the above-mentioned grabbing device 10. The mounting platform 20 is provided with a cup throwing channel 21 and a waste cup bin connected to the cup throwing channel 21. The grabbing device 10 is arranged on the mounting platform 20, and the grabbing device 10 is used to transfer the reaction container 2 after the detection is completed to the cup throwing channel 21.

[0079] The specific cup throwing process is as follows: after the driving mechanism 13 drives the grabbing mechanism 11 to move to the top of the cup throwing channel 21, the driving mechanism 13 drives the grabbing mechanism 11 to move downward, so that the reaction container 2 partially enters the cup throwing channel 21 and is as close to the center position of the cup throwing channel 21 as possible (such as Fig.10 Middle Arrow M 1 Then, the driving mechanism 13 drives the grasping mechanism 11 to move horizontally to retreat relative to the cup throwing channel 21 (such as Fig.10 The reaction vessel 2 contacts the wall of the cup channel 21 (as indicated by the arrow a in the middle). Fig. 9 As shown in FIG. 1 ). Because the wall of the cup throwing channel 21 restricts the reaction container 2 from continuing to move with the gripping mechanism 11, during this process, the two clamping jaws 112 gradually open, so that the reaction container 2 can gradually be ejected from the clamping position 1123. After the reaction container 2 is ejected, the reaction container 2 falls into the waste cup bin (as shown in FIG. 1 ) through the cup throwing channel 21 under the action of gravity. Fig.10 Middle Arrow M 3 The position of the reaction container 2 referred to is the position where the reaction container 2 passes through during the process of falling into the waste cup bin), completing the cup throwing process to achieve the recovery of the discarded reaction container 2, and the two clamps 112 are gradually closed under the action of the pre-tightening force of the elastic member 113.

[0080] In some optional embodiments of the present application, the cup channel 21 has a first wall 23 and a second wall 24 that are arranged opposite to each other. The gripping device 10 transfers the reaction container 2 after the detection into the cup channel 21 and abuts against the first wall 23. The sample analyzer 1 also includes a shock absorber 30, which at least covers the second wall 24.

[0081] Specifically, the shock absorbing member 30 may be foam, rubber, silicone or other shock absorbing components.

[0082] As an example, the shock absorber 30 may be located in the cup throwing channel 21 and only arranged on the second wall surface 24, or may be arranged on both the first wall surface 23 and the second wall surface 24, or the shock absorber 30 may be continuously arranged in a circle along the circumference of the cup throwing channel 21. As an example, the shock absorber 30 may also include a first portion 31 and a second portion 32 connected to each other, and the first portion 31 and the second portion 32 are bent 90°, the first portion 31 extends into the cup throwing channel 21 and is attached to the wall surface of the cup throwing channel 21, and the second portion 32 extends out of the cup throwing channel 21 and is attached to the edge of the cup throwing opening 22 of the cup throwing channel 21.

[0083] After the reaction container 2 is ejected, it will move in the opposite direction to the grasping mechanism 11. In order to ensure that the reaction container 2 does not become too loose and fall during transportation, the pre-tightening force of the elastic member 113 is designed with a certain margin (that is, even if the two clamps 112 do not clamp the reaction container 2, the elastic member 113 is in a deformed state and can provide pre-tightening force), so that most of the reaction container 2 will collide with the second wall 24 located in front of the first wall 23 after being ejected. In addition, due to manufacturing differences between the two clamps 112, such as the tolerance allowed by manufacturing, the damping of the rotation of the two clamps 112 is not completely equal, so that the resultant force provided by the two clamps 112 when the reaction container 2 is ejected is not perpendicular to the second wall 24, so the reaction container 2 will collide with the second wall 24 (such as Fig.10 Middle Arrow M 2 The position of the reaction container 2 is the position where the reaction container 2 is located when it collides with the second wall 24. After that, it may rotate along the circumference of the cup channel 21 and collide with the wall of the cup channel 21. In this way, when splashing liquid, the splashed droplets (such as Fig.10 The liquid droplets (indicated by the arrow B) will be distributed along the circumference of the cup channel 21, and some of the droplets will even fall into the gap between the elastic member 113 and the rotating shaft 115 and the first mounting hole 1112 when falling directly. As the sample analyzer 1 is used for a longer time and the test volume accumulates, these tiny splashing droplets accumulate to form a large area of ​​dirt, affecting the operator's experience, and even corroding the elastic member 113 or blocking the two clamping jaws 112, making the machine unable to continue to operate and malfunctioning.

[0084] In order to reduce the probability and amount of splashing, a shock absorber 30 is provided on at least the second wall 24. Taking the shock absorber 30 including a first part 31 and a second part 32 as an example, after the reaction container 2 is ejected from the two clamps 112, when the reaction container 2 collides with the second wall 24 or scrapes against the edge of the cup opening 22, due to the setting of the shock absorber 30, the impact force between the reaction container 2 and the wall of the cup channel 21 and / or the edge of the cup opening 22 can be effectively weakened, and the amount of splashing can be reduced. In this way, the risk of opening and closing failure of the clamp 112 can be further reduced, and the service life of the clamp 112 can be extended.

[0085] The above-mentioned gripping mechanism 11, gripping device 10 and sample analyzer 1, and in the present application, by setting a shielding member 114 to shield the side of the elastic member 113 facing the clamping position 1123, due to the shielding of the shielding member 114, the splashed droplets directly adhere to the shielding member 114, and it is difficult to contact the elastic member 113. Therefore, the droplets will not accumulate on the elastic member 113, and the elastic member 113 can always provide a pre-tightening force for the two clamping jaws 112, so that the two clamping jaws 112 can be smoothly opened or closed, so that the gripping mechanism 11 maintains its gripping function. In addition, when the probability of the elastic member 113 contacting the droplets is reduced, the possibility of corrosion and fracture of the elastic member 113 is also reduced.

[0086] 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.

[0087] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A gripping mechanism, characterized in that: The grabbing mechanism comprises: Mounting seat (111); Two clamping jaws (112) arranged opposite to each other are both rotatably mounted on the mounting seat (111), and the two clamping jaws (112) define a clamping position (1123); an elastic member (113), connected between the two clamping jaws (112) and used for providing a pre-tightening force for closing the two clamping jaws (112); and A shielding member (114) is mounted on the mounting seat (111) and shields a side of the elastic member (113) that faces the clamping position (1123).

2. The gripping mechanism according to claim 1, characterized in that: The clamping jaws (112) have a rotating portion (1121) and a clamping portion (1122), and the clamping portions (1122) of the two clamping jaws (112) define and form the clamping position (1123); The bottom end of the mounting seat (111) is provided with a mounting notch (1111), the grabbing mechanism further comprises a rotating shaft (115), the rotating shaft (115) and the rotating portion (1121) are both arranged in the mounting notch (1111), and the rotating portion (1121) is rotatably connected to the mounting seat (111) via the rotating shaft (115), and the clamping portion (1122) and the elastic member (113) are located outside the mounting notch (1111); The shielding member (114) shields the side of the installation notch (1111) that faces the clamping position (1123).

3. The gripping mechanism according to claim 2, characterized in that: The shielding member (114) and the clamping portion (1122) are arranged at an interval, and the distance between the shielding member (114) and the clamping portion (1122) is L, 0.2 mm≤L≤1 mm.

4. The gripping mechanism according to any one of claims 1 to 3, characterized in that: The shielding member (114) comprises a shielding cover (1141) and a shielding plate (1142); the shielding cover (1141) is arranged outside the mounting seat (111) and shields a side of the mounting seat (111) facing the clamping position (1123); the shielding plate (1142) is connected to the shielding cover (1141) and shields a side of the elastic member (113) facing the clamping position (1123).

5. The gripping mechanism according to claim 4, characterized in that: The shielding cover (1141) comprises a panel (1141a), a top plate (1141b) and two side plates (1141c), the two side plates (1141c) are arranged opposite to each other, and the two side plates (1141c) and the top plate (1141b) are both connected to the panel (1141a); a side of the mounting seat (111) facing the clamping position (1123) is defined as a first side, the panel (1141a) shields the first side, the top plate (1141b) shields the top side of the mounting seat (111), and the two side plates (1141c) respectively shield the two opposite sides of the mounting seat (111) adjacent to the top side and the first side; The panel (1141a), the top plate (1141b) and the two side plates (1141c) are arranged to form a mounting opening (1141d), and the mounting opening (1141d) is located on a side of the mounting seat (111) facing away from the clamping position (1123).

6. The gripping mechanism according to claim 5, characterized in that: The shielding plate (1142) is formed by bending the bottom end of the panel (1141a).

7. The gripping mechanism according to claim 1, characterized in that: The gripping mechanism further comprises a detachable part, and the shielding member (114) is detachably connected to the mounting seat (111) via the detachable part.

8. A gripping device, characterized in that: include: A gripping mechanism as claimed in any one of claims 1 to 7; as well as A driving mechanism (13) is connected to the grasping mechanism in a transmission manner and is used to drive the grasping mechanism to move in three dimensions.

9. A sample analyzer, characterized in that: include: A mounting platform (20) is provided with a cup throwing channel (21); and The gripping device as claimed in claim 8 is arranged on the mounting platform (20), and is used to transfer the reaction container (2) after the detection to the cup throwing channel (21).

10. The sample analyzer according to claim 9, characterized in that: The cup throwing channel (21) has a first wall surface (23) and a second wall surface (24) arranged opposite to each other. The grabbing device transfers the reaction container (2) after detection into the cup throwing channel (21) and abuts against the first wall surface (23). The sample analyzer also includes a shock absorbing component (30), and the shock absorbing component (30) at least covers the second wall surface (24).

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