Clamping mechanism, cover opening and closing assembly and cup separating device

Abstract

The utility model provides a clamping mechanism, a cover opening and closing assembly and a cup separating device. The clamping mechanism comprises at least two clamping pieces, each clamping piece is provided with a first clamping jaw and a second clamping jaw, the first clamping jaws are connected with the second clamping jaws, the first clamping jaws of the at least two clamping pieces define a first clamping cavity for clamping a first material pipe, and the second clamping jaws of the at least two clamping pieces define a second clamping cavity for clamping a second material pipe; wherein the second clamping cavity is communicated with the first clamping cavity, and the outer diameter of the first material pipe is larger than that of the second material pipe. Therefore, the clamping mechanism can meet the clamping requirements of the material pipes with different outer diameters, the use convenience of the clamping mechanism and the use experience feeling of an operator are effectively improved, and the detection efficiency of biological sample detection is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of biological sample sampling equipment, and particularly, to a clamping mechanism, a switch cover assembly and a cupping device. Background Art

[0002] In the automated detection of biological samples, it is necessary to divide the biological samples collected from users from a collection tube into test tubes for inspection. During the cupping process, it is usually necessary for a switch cover device to automatically open or close various test tubes.

[0003] However, the current switch cover device can only perform switch cover operations on test tubes of a single size. When facing test tubes of different sizes, it is necessary to replace the switch cover device of the corresponding size to achieve automatic switch cover, which brings great inconvenience and poor user experience to the operator. Moreover, the detection efficiency of biological sample detection is reduced. Summary of the Utility Model

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present utility model, a clamping mechanism is provided. The clamping mechanism includes at least two clamping members capable of moving towards each other. Each clamping member has a first clamping jaw and a second clamping jaw. The first clamping jaw is connected to the second clamping jaw. The first clamping jaws of at least two clamping members enclose a first clamping cavity for clamping a first material tube, and the second clamping jaws of at least two clamping members enclose a second clamping cavity for clamping a second material tube; wherein, the second clamping cavity is communicated with the first clamping cavity, and the outer diameter of the first material tube is larger than the outer diameter of the second material tube.

[0005] In the clamping mechanism of the present utility model, when multiple clamping members move towards each other, the first clamping jaws and the second clamping jaws of the multiple clamping members can enclose accommodating cavities of different sizes, so as to clamp the cover body of the material tube. Thus, the clamping mechanism can meet the clamping requirements of material tubes with different outer diameter sizes, effectively improving the convenience of using the clamping mechanism and the user experience of the operator, and further improving the detection efficiency of biological sample detection.

[0006] Exemplarily, the clamping mechanism further includes a driving member. The driving member is connected to at least two clamping members. At least two clamping members move towards each other and / or rotate around the central axis under the drive of the driving member. The first clamping jaw and the second clamping jaw are arranged along the direction of the central axis, and one end of the first clamping jaw far from the driving member is connected to the second clamping jaw.

[0007] Exemplarily, a first pressing portion is formed at one end of the first clamping jaw far from the second clamping jaw. The first pressing portion is configured to abut against the end of the first material tube when clamping the first material tube.

[0008] Exemplarily, the bottom of the first clamping jaw has a second pressing portion protruding towards the central axis relative to the second clamping jaw, and the second pressing portion is configured to abut against the end of the second material pipe when clamping the second material pipe.

[0009] Exemplarily, there are two clamping members, and the two clamping members are symmetrically arranged relative to the central axis.

[0010] Exemplarily, one side of the first clamping jaw and the second clamping jaw facing the central axis respectively has a plurality of clamping surfaces, and the plurality of clamping surfaces are connected in sequence.

[0011] Exemplarily, the plurality of clamping surfaces of the first clamping jaw and / or the second clamping jaw are connected and cooperate to form a preset included angle, and the included angle is 100 degrees to 140 degrees.

[0012] Exemplarily, the clamping surface located at the edge among the plurality of clamping surfaces extends towards the direction away from the central axis to form a contact surface, and a chevron groove is provided on the contact surface.

[0013] Exemplarily, the chevron groove has an intersecting first groove inclined surface and a second groove inclined surface, the included angle formed by the intersection of the first groove inclined surface and the second groove inclined surface is 80 degrees to 100 degrees, and / or the length value range of the opening formed by the first groove inclined surface and the second groove inclined surface is 0.3 mm to 0.7 mm, and / or the value range of the distance between adjacent chevron grooves is 0.3 mm to 0.7 mm.

[0014] Exemplarily, the first pressing portion has a first side and a second side arranged at intervals in the central axis direction, and the second pressing portion has a third side and a fourth side arranged at intervals in the central axis direction.

[0015] According to another aspect of the present invention, there is also provided a switch cover assembly, the switch cover assembly includes a floating mechanism and the clamping mechanism as described above, the clamping mechanism further includes a driving member, the driving member is connected to at least two clamping members, and one end of the floating mechanism is connected to the end of the driving member away from the clamping members.

[0016] According to still another aspect of the present invention, there is also provided a cup separating device, the cup separating device includes a frame body, a sampling assembly, a clamping assembly and the switch cover assembly as described above, and the switch cover assembly, the clamping assembly and the sampling assembly are all arranged on the frame body.

[0017] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are specifically exemplified below. Description of the Drawings

[0018] The embodiments of the present utility model will be described in more detail with reference to the accompanying drawings, and the above and other objects, features and advantages of the present utility model will become more apparent. The drawings are used to provide a further understanding of the embodiments of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings, the same reference numerals generally represent the same components or steps.

[0019] Figure 1 A perspective view of a clamping mechanism according to an exemplary embodiment of the present utility model is shown;

[0020] Figure 2 A perspective view of a clamping member according to an exemplary embodiment of the present utility model is shown;

[0021] Figure 3 A top view of a clamping member according to an exemplary embodiment of the present utility model is shown;

[0022] Figure 4 A front view of a twill groove according to an exemplary embodiment of the present utility model is shown;

[0023] Figure 5 A front view of a clamping member according to an exemplary embodiment of the present utility model is shown;

[0024] Figure 6 A structural schematic diagram of a floating mechanism according to an exemplary embodiment of the present utility model is shown.

[0025] Among them, the components represented by the reference numerals in the drawings:

[0026] 1. Driving member; 2. Clamping member; 21. First jaw; 211. First clamping cavity; 212. First pressing part; 2121. First side; 2122. Second side; 213. Second pressing part; 2131. Third side; 2132. Fourth side; 22. Second jaw; 221. Second clamping cavity; 23. Clamping surface; 24. Contact surface; 241. Twill groove; 2411. First groove inclined surface; 2412. Second groove inclined surface; 3. Floating mechanism; 31. Floating plate; 32. Fixed plate; 33. Guide post; 34. Spring. Detailed implementation manners

[0027] In order to make the objectives, technical solutions and advantages of the present utility model more apparent, exemplary embodiments according to the present utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments of the present utility model. It should be understood that the present utility model is not limited by the exemplary embodiments described herein. Based on the embodiments of the present utility model described herein, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] In the following description, a large number of details are provided to enable a thorough understanding of the present utility model. However, those skilled in the art can understand that the following description only exemplarily shows the preferred embodiments of the present utility model, and the present utility model can be implemented without one or more such details. In addition, in order to avoid confusion with the present utility model, some technical features well known in the art are not described in detail.

[0029] In order to thoroughly understand the embodiments of the present utility model, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of the present utility model is not limited to the special details familiar to those skilled in the art. The preferred embodiments of the present utility model are described in detail as follows. However, in addition to these detailed descriptions, the present utility model can also have other embodiments.

[0030] In one embodiment of the present utility model, a clamping mechanism is provided. The clamping mechanism can be used in the fields of detection and laboratory research, etc. An operator can use the clamping mechanism to clamp material tubes with different outer diameters. The following will introduce in detail a clamping mechanism according to an embodiment of the present utility model with reference to the accompanying drawings.

[0031] Refer to Figure 1 , the clamping mechanism includes at least two clamping members 2 that can move towards each other. Each clamping member 2 has a first clamping jaw 21 and a second clamping jaw 22. The first clamping jaw 21 is connected to the second clamping jaw 22. The first clamping jaws 21 of at least two clamping members 2 enclose to form a first clamping cavity 211 for clamping a first material tube, and the second clamping jaws 22 of at least two clamping members 2 enclose to form a second clamping cavity 221 for clamping a second material tube; wherein, the second clamping cavity 221 communicates with the first clamping cavity 211, and the outer diameter of the first material tube is larger than the outer diameter of the second material tube.

[0032] The multiple clamping members 2 can move towards each other. When the clamping mechanism is applied to switch the device, the multiple clamping members 2 can rotate around the central axis, and the central axis forms the rotation center of the multiple clamping members 2. The movement towards each other can mean that two or more clamping members 2 can move in directions approaching or moving away from each other.

[0033] When multiple clamping members 2 approach each other, the multiple clamping members 2 can form a clamping cavity adapted to the outer diameter of the material tube to complete the clamping operation of the material tube. When the multiple clamping members 2 move away from each other, the clamping mechanism can release the clamped material tube.

[0034] When applying the clamping mechanism to switch the device, the clamping mechanism clamps the cover of the material tube, and the clamping member 2 can rotate counterclockwise around the rotation center of the multiple clamping members 2 to achieve the operation of opening the cover of the material tube. Conversely, when rotating clockwise, the operation of closing the cover of the material tube can be achieved.

[0035] The first clamping claws 21 and the second clamping claws 22 of the multiple clamping members 2 can respectively enclose and form clamping cavities with different cross-sectional areas. When the outer diameter of the material tube is relatively large, the clamping cavity formed by the multiple first clamping claws 21 can be used to achieve the clamping or cover opening / closing operation. When the outer diameter of the material tube is relatively small, the clamping cavity formed by the multiple second clamping claws 22 can be used to achieve the clamping or cover opening / closing operation.

[0036] Exemplarily, when the diameter of the cover of the material tube is 20 mm to 32 mm, the first clamping claws 21 can be used to clamp the material tube. When the diameter of the cover of the material tube is 10 mm to 28 mm, the second clamping claws 22 can be used to clamp the material tube.

[0037] For the clamping mechanism of the present utility model, when the multiple clamping members 2 move towards each other, the first clamping claws 21 and the second clamping claws 22 of the multiple clamping members 2 can enclose and form clamping cavities of different sizes, thereby clamping the cover of the material tube. Thus, the clamping mechanism can meet the clamping requirements of material tubes with different outer diameter sizes, effectively improving the convenience of using the clamping mechanism and the experience of the operator, and further improving the detection efficiency of biological sample detection.

[0038] In some embodiments, referring to Figure 1 , the clamping mechanism further includes a driving member 1. The driving member 1 is connected to at least two clamping members 2. The at least two clamping members 2 move towards each other and / or rotate around the central axis under the drive of the driving member 1. The first clamping claws 21 and the second clamping claws 22 are arranged along the direction of the central axis. One end of the first clamping claw 21 away from the driving member 1 is connected to the second clamping claw 22.

[0039] One end of the first clamping claw 21 is connected to the driving member 1, and the other end of the first clamping claw 21 away from the driving member 1 is connected to the second clamping claw 22. The central axis can correspond to the center line of the output shaft of the driving member 1.

[0040] The first clamping claws 21 and the second clamping claws 22 can be integrally formed. The integrally formed setting can reduce the connection points and seams between the first clamping claws 21 and the second clamping claws 22, thereby improving the overall strength and rigidity of the clamping member 2. In addition, the integrally formed setting can also reduce the waste of materials, improve the performance and service life of the clamping member 2.

[0041] In the above embodiments, the first jaw 21 and the second jaw 22 can be arranged vertically along the direction of the central axis, and the first jaw 21 is arranged above the second jaw 22. In this way, the layout of the clamping member 2 can be made more reasonable, effectively improving the rationality of the structure of the clamping mechanism.

[0042] In some embodiments, referring to Figure 2 , a first pressing portion 212 is formed at one end of the first jaw 21 away from the second jaw 22, and the first pressing portion 212 is configured to abut against the end of the first material pipe when clamping the first material pipe.

[0043] When using a plurality of first jaws 21 to open the lid of the first material pipe, the plurality of first pressing portions 212 of the plurality of first jaws 21 can closely fit with the lid of the first material pipe, so that the lid can be firmly limited within the first clamping cavity 211, and then the lid can be opened quickly and conveniently.

[0044] When using a plurality of first jaws 21 to close the lid of the first material pipe, the plurality of first pressing portions 212 can apply a downward pressure to the lid, so that the lid can be closed quickly and stably, avoiding situations such as the lid not being rotated and closed in place or being loose.

[0045] In the above embodiments, when the clamping mechanism performs the operation of opening and closing the lid of the first material pipe, the first pressing portion 212 can make the clamping member 2 better contact with the lid of the first material pipe, effectively improving the stability of the abutment between the clamping member 2 and the first material pipe, and further improving the practicability and reliability of the clamping mechanism.

[0046] In some embodiments, referring to Figure 2 , the bottom of the first jaw 21 has a second pressing portion 213 protruding toward the central axis relative to the second jaw 22, and the second pressing portion 213 is configured to abut against the end of the second material pipe when clamping the second material pipe.

[0047] The cross-sectional area of the second clamping cavity 221 can be smaller than the cross-sectional area of the first clamping cavity 211. When facing a material pipe with a smaller outer diameter, the operator can use the second jaw 22 to perform operations such as clamping and opening and closing the lid. In this way, the operator can use the first jaw 21 and the second jaw 22 to clamp the first material pipe and the second material pipe with different outer diameters respectively, greatly improving the convenience of use.

[0048] When using a plurality of second jaws 22 to open the lid of the second material pipe, the plurality of second pressing portions 213 of the plurality of second jaws 22 can closely fit with the lid of the second material pipe, so that the lid can be firmly limited within the second clamping cavity 221, and then the lid can be opened quickly and conveniently.

[0049] When using multiple second jaws 22 to close the lid of the second material tube, multiple second pressing parts 213 can apply a downward pressure to the lid, so that the lid can be quickly and stably closed, avoiding situations such as the lid not being properly closed or loosened due to rotation.

[0050] In the above embodiment, when facing a second material tube with a relatively small outer diameter, the second pressing part 213 can make the clamping member 2 better contact with the lid of the second material tube, effectively improving the stability of the abutment between the clamping member 2 and the second material tube, and further improving the practicality and reliability of the clamping mechanism.

[0051] In some embodiments, refer to Figure 1 , there are two clamping members 2, and the two clamping members 2 are symmetrically arranged relative to the central axis.

[0052] In the above embodiment, the clamping mechanism can have two clamping members 2. When using the clamping mechanism to clamp the material tube, the two clamping members 2 can clamp the material tube from opposite sides of the material tube. Thus, a small number of clamping members 2 can be used to firmly clamp the material tube. While ensuring the clamping effect, the structural layout of the clamping mechanism is effectively simplified, the manufacturing difficulty is reduced, and the failure rate of the clamping mechanism is reduced and the reliability is improved.

[0053] In some embodiments, refer to Figure 3 , one side of the first jaw 21 and the second jaw 22 facing the central axis respectively has a plurality of clamping surfaces 23, and the plurality of clamping surfaces 23 are connected in sequence.

[0054] A plurality of clamping surfaces 23 can be formed on the inner walls of the first jaw 21 and the second jaw 22 facing the direction of the material tube. During the rotation operation, the clamping surfaces 23 can ensure that the clamping cavity and the material tube remain fixed and stable, preventing relative movement or detachment between the two, thus ensuring the overall structural stability during the rotation operation. Moreover, the clamping member 2 can also transmit force and torque to the material tube through the clamping surfaces 23, so that the lid of the material tube can be better stressed and quickly complete the operation of opening and closing the lid after being stressed.

[0055] Alternatively, one side of the first jaw 21 and the second jaw 22 facing the central axis can respectively have arc-shaped surfaces. The arc-shaped surfaces can better adapt to the curved surface shape of the clamped material tube, ensuring that the clamping force received by the clamping member 2 can be evenly distributed on the surface in contact with the material tube, thereby providing a more firm and stable clamping effect. Moreover, the arc-shaped surfaces have the characteristic of being formed in one processing, making the manufacturing process of the clamping member 2 more efficient.

[0056] In the above embodiments, the clamping surface 23 can transfer the driving force applied by the driving member 1 to the clamping member 2 to the material pipe, effectively reducing the attenuation of the driving force, improving the driving efficiency of the driving member 1, and further improving the stability and service efficiency of the clamping mechanism.

[0057] In some embodiments, referring to Figure 5 , a plurality of clamping surfaces 23 of the first clamping jaw 21 and / or the second clamping jaw 22 are connected and cooperate to form a preset angle α1, and the preset angle α1 is 100 degrees to 140 degrees.

[0058] A plurality of clamping surfaces 23 of the first clamping jaw 21 and a plurality of clamping surfaces 23 of the second clamping jaw 22 can respectively form a preset angle. The first clamping jaw 21 and the second clamping jaw 22 with a preset angle can make the clamping surface 23 fit more closely to the surface of the material pipe to provide a more stable clamping force, effectively reducing the occurrence of the material pipe moving or sliding during the clamping process.

[0059] The first clamping jaw 21 and the second clamping jaw 22 with a preset angle can also ensure the stability of the posture and direction required for the material pipe to maintain during the clamping process, thereby improving the stability and reliability of the clamping member 2.

[0060] The value range of the preset angle α1 is 100 degrees to 140 degrees (°), for example, 100°, 110

[0061] °, 120°, 130°, 140°, preferably 120°.

[0062] In the above embodiments, through the first clamping jaw 21 and the second clamping jaw 22 with a preset angle, the stability of the material pipe during the clamping process can be improved, and further the stability and reliability of the clamping mechanism can be improved.

[0063] In some embodiments, referring to Figure 3 , among the plurality of clamping surfaces 23, the clamping surfaces 23 located at the edge extend in a direction away from the central axis to form a contact surface 24, and a chevron groove 241 is provided on the contact surface 24.

[0064] When the clamping mechanism clamps the material pipe or the cover of the material pipe, the contact surface 24 can abut against the outer surface of the material pipe. Providing the chevron groove 241 on the contact surface 24 can effectively increase the friction force during abutment, so that the driving force generated by the driving member 1 can be better transferred to the material pipe.

[0065] Alternatively, convex points, reticulations, or other components or patterns that can increase the friction force can also be provided on the contact surface 24. All components or patterns on the contact surface 24 that can increase the friction force are within the protection scope of this application, and this application makes no limitations.

[0066] In the above embodiments, a twill groove 241 is provided on the contact surface 24, which can improve the frictional force, stability and the efficiency of opening and closing the material pipe cover generated during the clamping process, thereby improving the stability and practicability of the clamping mechanism.

[0067] In some embodiments, referring to Figure 4 , the twill groove 241 has an intersecting first groove inclined surface 2411 and a second groove inclined surface 2412. The included angle α2 formed by the intersection of the first groove inclined surface 2411 and the second groove inclined surface 2412 is 80 degrees to 100 degrees, and / or the length value range of the opening formed by the first groove inclined surface 2411 and the second groove inclined surface 2412 is 0.3 millimeters to 0.7 millimeters, and / or the value range of the distance between adjacent twill grooves 241 is 0.3 millimeters to 0.7 millimeters.

[0068] The value range of the included angle α2 formed by the intersection of the first groove inclined surface 2411 and the second groove inclined surface 2412 is 80 degrees to 100 degrees (°), for example, 80°, 85°, 90°, 95°, 100°, and preferably 90°.

[0069] The length L1 of the opening formed by the first groove inclined surface 2411 and the second groove inclined surface 2412 has a value range of 0.3 millimeters to 0.7 millimeters (mm), for example, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, and preferably 0.5mm.

[0070] The distance L2 between adjacent twill grooves 241 has a value range of 0.3 millimeters to 0.7 millimeters (mm), for example, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, and preferably 0.5mm.

[0071] The size and shape of the twill groove 241 can be reasonably combined by any of the above numerical values.

[0072] In the above embodiments, when facing material pipes of different sizes, the shape or size of the twill groove 241 can be flexibly set according to the actual situation, so as to improve the firmness and adaptability when the contact surface 24 contacts the material pipe, thereby effectively improving the universality of the clamping mechanism.

[0073] In some embodiments, referring to Figure 5 , the first pressing portion 212 has a first side 2121 and a second side 2122 that are spaced apart in the central axis direction, and the second pressing portion 213 has a third side 2131 and a fourth side 2132 that are spaced apart in the central axis direction.

[0074] The distance between the first side 2121 and the second side 2122 of the first pressing part 212, and the distance between the third side 2131 and the fourth side 2132 of the second pressing part 213 can be adapted to the outer diameter of the material tube to be clamped. The operator can determine the distance between the first side 2121 and the second side 2122, and the distance between the third side 2131 and the fourth side 2132 according to the actual situation and needs.

[0075] In the above embodiment, the operator can determine the distance between the first side 2121 and the second side 2122 or the distance between the third side 2131 and the fourth side 2132 according to the outer diameter of the material tube to be clamped, so as to select a more suitable clamping member 2, effectively ensuring that the first pressing part 212 or the second pressing part 213 is in contact with the cover of the material tube, and further ensuring the firmness during the clamping process.

[0076] According to another aspect of the present invention, there is also provided a switch cover assembly. Refer to Figure 6 , the switch cover assembly includes a floating mechanism 3 and the clamping mechanism as described above. The clamping mechanism further includes a driving member 1, the driving member 1 is connected to at least two clamping members 2, and one end of the floating mechanism 3 is connected to the end of the driving member 1 away from the clamping members 2.

[0077] The floating mechanism 3 may include a floating plate 31, a fixing plate 32, a guiding column 33 and a spring 34. One end of the floating plate 31 is connected to the end of the clamping mechanism away from the clamping members 2. The other end of the floating plate 31 is connected to the fixing plate 32 through the guiding column 33. A spring 34 is sleeved outside the guiding column 33, and the clamping mechanism can drive the floating plate 31 to slide along the guiding column 33.

[0078] When using the switch cover assembly to perform the switch cover operation on the material tube, after the clamping mechanism abuts against the cover of the material tube, the spring 34 can undergo a compressive deformation and release a reaction force under the action of the floating plate 31, so that the floating mechanism 3 can apply a downward pressure to the cover of the material tube through the clamping mechanism, thereby improving the stability of the switch cover assembly for switching the cover.

[0079] The switch cover assembly of the present invention includes the clamping mechanism as described above. Since the above clamping mechanism has the beneficial effects as described above, the switch cover assembly including the above clamping mechanism will also necessarily have the above beneficial effects.

[0080] According to still another aspect of the present invention, there is also provided a cup separating device. The cup separating device includes a frame body, a sampling assembly, a clamping assembly and the switch cover assembly as described above. The switch cover assembly, the clamping assembly and the sampling assembly are all arranged on the frame body.

[0081] The cup-dividing device of the present utility model includes the switch cover assembly as described above. Since the above-mentioned switch cover assembly has the beneficial effects as described above, the cup-dividing device including the above-mentioned switch cover assembly will necessarily have the above-mentioned beneficial effects.

[0082] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present utility model thereto. Those of ordinary skill in the art can make various changes and modifications therein without departing from the scope and spirit of the present utility model. All such changes and modifications are intended to be included within the scope of the present utility model as claimed in the appended claims.

[0083] For the sake of convenience of description, the term "connected" can be used herein to describe the relationship between one or more elements or features shown in the drawings and other elements or features. It should be understood that "connected" can include direct connection or indirect connection via other elements or features, and all such cases are intended to be included herein.

[0084] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, components, assemblies, and / or combinations thereof.

[0085] It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0086] The present utility model has been described by the above embodiments, but it should be understood that the above embodiments are only for the purpose of exemplification and illustration and are not intended to limit the present utility model within the scope of the described embodiments. In addition, those skilled in the art can understand that the present utility model is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present utility model, and all such variations and modifications fall within the scope of protection required by the present utility model. The scope of protection of the present utility model is defined by the appended claims and their equivalent scope.

Claims

1. A clamping mechanism, characterized in that: comprising at least two clamping members capable of moving toward each other; Each of the clamping members comprises a first clamping jaw and a second clamping jaw, wherein the first clamping jaw is connected to the second clamping jaw, and the first clamping jaws of at least two of the clamping members are combined to form a first clamping cavity for clamping a first material pipe, and the second clamping jaws of at least two of the clamping members are combined to form a second clamping cavity for clamping a second material pipe; The second clamping cavity is communicated with the first clamping cavity, and the outer diameter of the first material tube is greater than the outer diameter of the second material tube.

2. The clamping mechanism according to claim 1, characterized in that: The clamping mechanism also includes a driving member, which is connected to at least two clamping members. At least two clamping members move toward each other and / or rotate around a central axis under the drive of the driving member. The first clamping jaw and the second clamping jaw are arranged along the direction of the central axis, and the end of the first clamping jaw away from the driving member is connected to the second clamping jaw.

3. The clamping mechanism according to claim 2, characterized in that: The first clamping jaw is formed with a first pressing portion at one end away from the second clamping jaw, and the first pressing portion is configured to abut against the end of the first material tube when clamping the first material tube.

4. The clamping mechanism according to claim 3, characterized in that: The bottom of the first clamping jaw has a second clamping portion protruding toward the central axis relative to the second clamping jaw, and the second clamping portion is configured to abut against the end of the second material tube when clamping the second material tube.

5. The clamping mechanism according to claim 2, characterized in that: There are two clamping members, and the two clamping members are symmetrically arranged relative to the central axis.

6. The clamping mechanism according to claim 2, characterized in that: The first clamping jaw and the second clamping jaw each have a plurality of clamping surfaces on one side facing the central axis, and the plurality of clamping surfaces are connected in sequence.

7. The clamping mechanism according to claim 6, characterized in that: The plurality of clamping surfaces of the first clamping jaw and / or the second clamping jaw are connected and cooperated to form a preset angle, and the angle is 100 degrees to 140 degrees.

8. The clamping mechanism according to claim 6, characterized in that: The clamping surfaces located at the edges of the plurality of clamping surfaces extend in a direction away from the central axis to form a contact surface, and the contact surface is provided with a diagonal groove.

9. The clamping mechanism according to claim 8, characterized in that: The twill groove has a first groove bevel and a second groove bevel intersecting each other, the angle formed by the intersection of the first groove bevel and the second groove bevel is 80 degrees to 100 degrees, and / or the length of the opening formed by the first groove bevel and the second groove bevel is in the range of 0.3 mm to 0.7 mm, and / or the distance between adjacent twill grooves is in the range of 0.3 mm to 0.7 mm.

10. The clamping mechanism according to claim 4, characterized in that: The first pressing portion has a first side and a second side that are spaced apart in the direction of the central axis, and the second pressing portion has a third side and a fourth side that are spaced apart in the direction of the central axis.

11. A switch cover assembly, characterized in that: The switch cover assembly includes a floating mechanism and a clamping mechanism as described in any one of claims 1 to 10, the clamping mechanism also includes a driving member connected to at least two clamping members, and one end of the floating mechanism is connected to an end of the driving member away from the clamping member.

12. A cup-dispensing device, characterized in that: The cup-dispensing device comprises a frame, a sampling assembly, a clamping assembly and a switch cover assembly as claimed in claim 11, wherein the switch cover assembly, the clamping assembly and the sampling assembly are all arranged on the frame.

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