Clamping assembly, unscrewing mechanism and uncovering device

Abstract

The utility model relates to a clamping assembly, an unscrewing mechanism and an uncovering device. The clamping assembly comprises a thrust unit and a clamping unit, the thrust unit comprises a thrust shaft and a thrust block, the thrust block is installed on the thrust shaft, and the clamping unit is in transmission connection with the thrust shaft; the trigger plate is mounted on the mounting seat; in the first state, the thrust shaft and the thrust block descend, the thrust block is separated from the trigger plate, and the trigger plate is located at the first position; in the second state, the thrust shaft and the thrust block ascend; if the clamping unit does not clamp the pipe cap, the thrust shaft and the thrust block rise to a first height, and the thrust block pushes the trigger plate to move to a second position in the process; if the clamping unit clamps the pipe cover, the thrust shaft and the thrust block to rise to a second height, and in the process, the thrust block is still separated from the trigger plate, and the trigger plate is located at the first position; the second height is less than the first height. According to the clamping assembly, the unscrewing mechanism and the uncovering device, whether the clamping unit clamps the pipe cover or not can be visually, reliably and simply judged in structure.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a clamping assembly, a loosening mechanism and a cover opening device. Background Art

[0002] In the field of sample analysis, samples are generally placed in sample tubes. During testing, the sample tubes will go through processing steps such as centrifugation, opening the cover, collection, inspection, capping, storage and disinfection.

[0003] The loosening mechanism is used to loosen the tube cover of the sample tube relative to the tube body of the sample tube so as to subsequently remove the tube cover from the tube body. The loosening mechanism usually uses a clamping assembly to clamp the tube cover, and then the loosening mechanism drives the tube cover to rotate relative to the tube body, thereby finally loosening the tube cover.

[0004] In the process of loosening the tube cover by the loosening mechanism, it is necessary to judge whether the clamping assembly in the loosening mechanism has clamped the tube cover. Therefore, how to provide a judgment method that is intuitive, reliable and simple in structure has become an urgent problem to be solved. Utility Model Content

[0005] Based on this, it is necessary to provide a clamping assembly, a loosening mechanism and a cover opening device that can intuitively, reliably and simply judge whether the tube cover is clamped in order to solve the above problems.

[0006] A clamping assembly, the clamping assembly having a first state and a second state, and the clamping assembly comprising:

[0007] Mounting seat;

[0008] A thrust unit and a clamping unit, wherein the thrust unit is mounted on the mounting seat and comprises a thrust shaft and a thrust block, the thrust block is mounted on the thrust shaft, and the clamping unit is drivingly connected to the thrust shaft; and

[0009] A trigger unit, comprising a trigger plate, wherein the trigger plate is movably mounted on the mounting seat and has a first position and a second position with respect to the mounting seat;

[0010] When the clamping assembly is in the first state, at least one of the thrust shaft and the thrust block is controlled to drive the other to descend synchronously, the thrust shaft drives the clamping unit to open, the thrust block is separated from the trigger plate, and the trigger plate is switched from the second position to the first position;

[0011] When the clamping assembly is in the second state, at least one of the thrust shaft and the thrust block is controlled to drive the other to rise synchronously, and the thrust shaft drives the clamping unit to retract;

[0012] If the clamping unit does not clamp the tube cover and can be completely retracted, the thrust shaft and the thrust block rise to a first height, and during the rising process, the thrust block contacts the trigger plate and pushes the trigger plate to move from the first position to the second position; if the clamping unit clamps the tube cover of the sample tube and cannot be completely retracted, the thrust shaft and the thrust block rise to a second height, and during the rising process, the thrust block is still separated from the trigger plate, and the trigger plate is located at the first position; the second height is less than the first height.

[0013] In some embodiments, the thrust unit further includes a thrust driving member, which is mounted on the mounting seat and is transmission-connected to the thrust shaft, and is used to drive the thrust shaft to drive the thrust block to descend synchronously;

[0014] The thrust unit further comprises a thrust elastic member, which is installed between the mounting seat and the thrust block, and is used to provide an elastic force for driving the thrust block to drive the thrust shaft to rise.

[0015] In some embodiments, the trigger plate is rotatably mounted on the mounting seat, and when the trigger plate is located at the first position, the extension direction of the trigger plate is perpendicular to the lifting direction of the thrust shaft, and when the trigger plate is located at the second position, the extension direction of the trigger plate intersects the lifting direction of the thrust shaft at an acute angle;

[0016] The thrust block rises and pushes the trigger plate to rotate from the first position to the second position.

[0017] In some embodiments, the trigger unit further includes a mounting shaft and a retaining ring, wherein the mounting shaft protrudes from the mounting seat, the trigger plate is rotatably mounted outside the mounting shaft, and the retaining ring is mounted on the mounting shaft and blocks the side of the trigger plate facing away from the mounting seat.

[0018] In some embodiments, the trigger unit further includes a trigger elastic member, which is mounted on the mounting seat and connected to the trigger plate, and the trigger elastic member is used to provide the trigger plate with an elastic force to drive the trigger plate to move from the second position to the first position.

[0019] In some embodiments, the trigger elastic member includes an elastic portion and hooking portions connected to both ends of the elastic portion, a hooking shaft is protruding from the mounting seat, and hooking holes are provided on the hooking shaft and the trigger plate, one hooking portion of the elastic member is hooked in the hooking hole of the hooking shaft, and the other hooking portion of the elastic member is hooked in the hooking hole of the trigger plate.

[0020] In some of the embodiments, the clamping assembly further includes a detection unit, and the detection unit is mounted on the mounting seat;

[0021] The detection unit is used to send a first electrical signal when the trigger plate is located at the first position, and is used to send a second electrical signal when the trigger plate is located at the second position, the first electrical signal in the first state indicates that the clamping unit is open, the first electrical signal in the second state indicates that the clamping unit clamps the tube cover and is not completely retracted, and the second electrical signal indicates that the clamping unit does not clamp the tube cover and is completely retracted.

[0022] In some embodiments, the detection unit includes a transmitter and a receiver, wherein the transmitter and the receiver are arranged opposite to each other and define a detection space;

[0023] When the trigger plate is located at the first position, the trigger plate is located outside the detection space, and the receiver receives the signal transmitted by the transmitter and sends out the first electrical signal; when the trigger plate is located at the second position, the trigger plate partially extends into the detection space and blocks the signal transmitted by the transmitter, and the receiver cannot receive the signal transmitted by the transmitter and sends out the second electrical signal.

[0024] A loosening mechanism, comprising:

[0025] A clamping assembly as described in any one of the above items; and

[0026] The rotating assembly is mounted on the mounting seat, and the rotating assembly is used to drive the thrust shaft to drive the clamping unit to rotate relative to the mounting seat when the clamping unit clamps the pipe cover, so as to loosen the pipe cover from the pipe body.

[0027] A cover opening device, comprising:

[0028] frame;

[0029] A tube clamping mechanism, disposed on the rack and used to clamp the tube body of the sample tube;

[0030] A lifting mechanism is arranged on the frame; and

[0031] The loosening mechanism as described in the above embodiment is arranged on the lifting mechanism, and the loosening mechanism moves closer to or away from the tube clamping mechanism under the drive of the lifting mechanism.

[0032] The above-mentioned clamping assembly, loosening mechanism and cover opening device, in the present application, can intuitively, reliably and simply determine whether the clamping unit has clamped the tube cover by converting the degree of contraction of the clamping unit into a mechanical position change of the trigger plate, thereby facilitating the judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a structural schematic diagram of a clamping assembly in an embodiment of the present application when it is in a first state;

[0034] Figure 2 for Figure 1 The front view of the clamping assembly shown in the first state without the clamping unit;

[0035] Figure 3 A front view of a clamping assembly according to an embodiment of the present application in a second state and a trigger plate in a second position;

[0036] Figure 4 for Figure 3 The front view of the clamping assembly shown without the clamping unit;

[0037] Figure 5 for Figure 3 A schematic diagram of the structure when the clamping assembly is in the second state and the trigger plate is in the second position;

[0038] Figure 6 for Figure 5 An enlarged schematic diagram of a local structure A of the clamping assembly is shown.

[0039] Figure Number:

[0040] 1. Clamping assembly;

[0041] 10. thrust unit; 20. clamping unit; 30. trigger unit; 40. detection unit; 50. mounting seat;

[0042] 11. thrust shaft; 12. thrust block; 13. thrust elastic member;

[0043] 31. trigger plate; 311. trigger part; 312. detection part; 32. trigger elastic member; 321. elastic part; 322. hook part; 33. mounting shaft; 34. retaining ring;

[0044] 41. Transmitter; 42. Receiver; 43. Detection space;

[0045] 51. Hook shaft; 52. Hook hole. DETAILED DESCRIPTION

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] A cover opening device provided in one embodiment of the present application is used to open the cover of a sample tube. The sample tube includes a tube body and a tube cover. The tube body is used to contain a liquid sample. The tube cover is fixed to the tube body by a threaded connection, so that the tube cover seals the inner cavity of the tube body. When the tube cover needs to be opened to absorb the sample in the tube body, the cover opening device can unload the tube cover from the tube body, and finally realize the opening of the sample tube.

[0053] The cover opening device includes a frame, a tube clamping mechanism, a lifting mechanism, a loosening mechanism and a controller. The tube clamping mechanism, the lifting mechanism and the controller are all arranged on the frame, and the loosening mechanism is arranged on the lifting mechanism. The tube clamping mechanism is used to clamp the tube body of the sample tube, and the loosening mechanism is used to clamp the tube cover of the sample tube to loosen the tube cover from the tube body. The lifting mechanism can drive the loosening mechanism to move away from the tube clamping mechanism so that the tube cover is completely separated from the tube body; of course, before loosening the tube cover, the lifting mechanism can also drive the loosening mechanism to move close to the tube clamping mechanism so that the loosening mechanism contacts the tube cover, so that the subsequent loosening mechanism can perform the operation of loosening the tube cover. The controller is electrically connected to the tube clamping mechanism, the lifting mechanism and the loosening mechanism, and is used to control the operation of the tube clamping mechanism, the loosening mechanism and the lifting mechanism.

[0054] Among them, the lifting mechanism and the pipe clamping mechanism are conventional technologies in the art, so they will not be described here in detail.

[0055] See also Figures 1 to 5The loosening mechanism includes a clamping assembly 1 and a rotating assembly. The clamping assembly 1 has a first state and a second state, and the clamping assembly 1 includes a mounting seat 50, a thrust unit 10, a clamping unit 20 and a trigger unit 30. The thrust unit 10 is mounted on the mounting seat 50, and includes a thrust shaft 11 and a thrust block 12. The thrust block 12 is mounted on the thrust shaft 11, and the clamping unit 20 is transmission-connected to the thrust shaft 11. The trigger unit 30 includes a trigger plate 31, which is movably mounted on the mounting seat 50 and has different first and second positions relative to the mounting seat 50. When the clamping assembly 1 is in the first state, at least one of the thrust shaft 11 and the thrust block 12 is controlled to drive the other to descend synchronously, the thrust shaft 11 drives the clamping unit 20 to open, the thrust block 12 is separated from the trigger plate 31, and the trigger plate 31 switches from the second position to the first position. When the clamping assembly 1 is in the second state, at least one of the thrust shaft 11 and the thrust block 12 is controlled to drive the other to rise synchronously, and the thrust shaft 11 drives the clamping unit 20 to retract. If the clamping unit 20 does not clamp the tube cover and can be completely retracted, the thrust shaft 11 and the thrust block 12 rise to the first height, and during the rising process, the thrust block 12 contacts the trigger plate 31 and pushes the trigger plate 31 to move from the first position to the second position; if the clamping unit 20 clamps the tube cover of the sample tube and cannot be completely retracted, the thrust shaft 11 and the thrust block 12 rise to the second height, and during the rising process, the thrust block 12 and the trigger plate 31 are still separated, and the trigger plate 31 is located at the first position; the second height is less than the first height. The rotating assembly is mounted on the mounting seat 50, and the rotating assembly is used to drive the thrust shaft 11 to drive the clamping unit 20 to rotate relative to the mounting seat 50 when the clamping unit 20 clamps the tube cover, so as to loosen the tube cover from the tube body.

[0056] Among them, the thrust shaft 11 descends to drive the clamping unit 20 to open, the thrust shaft 11 rises and drives the clamping unit 20 to close, and the rotating component drives the thrust shaft 11 to drive the clamping unit 20 to rotate relative to the mounting seat 50. These are conventional technical means in this field, so they will not be repeated here.

[0057] It is worth mentioning that the power for at least one of the thrust shaft 11 and the thrust block 12 to drive the other to descend or ascend synchronously does not come from the lifting mechanism. Before the lifting mechanism drives the loosening mechanism to approach the clamping mechanism or during the process of approaching the clamping mechanism, at least one of the thrust shaft 11 and the thrust block 12 drives the other to ascend and descend synchronously relative to the lifting mechanism by means of other driving structures, so as to realize the opening or closing of the clamping unit 20.

[0058] Specifically, when the clamping assembly 1 is in the first state, at least one of the thrust shaft 11 and the thrust block 12 is controlled to drive the other to descend synchronously, and the descent of the thrust shaft 11 drives the clamping unit 20 to open. The more the thrust shaft 11 descends, the greater the degree of opening of the clamping unit 20, so that the clamping unit 20 can be adapted to pipe caps of different sizes. During the descent of the thrust shaft 11, the thrust block 12 synchronously descends and moves back to the trigger plate 31, so that the thrust block 12 is separated from the trigger plate 31, and the trigger plate 31 switches from the second position to the first position.

[0059] When the clamping assembly 1 is in the second state, at least one of the thrust shaft 11 and the thrust block 12 is controlled to drive the other to rise synchronously. The rise of the thrust shaft 11 will drive the clamping unit 20 to retract. The higher the thrust shaft 11 rises, the greater the degree of retraction of the clamping unit 20, so that the clamping unit 20 can clamp pipe caps of different sizes.

[0060] If the clamping unit 20 is folded and does not clamp the pipe cover, there is no restriction of the pipe cover, and the clamping unit 20 can be completely folded, so the thrust shaft 11 and the thrust block 12 can both rise significantly and rise to the first height. The thrust shaft 11 rises significantly, so that the clamping unit 20 can be folded significantly, and the thrust block 12 rises significantly. The thrust block 12 rises a large distance and can contact the trigger plate 31, and pushes the trigger plate 31 to move from the first position to the second position, so as to achieve the position change of the trigger plate 31.

[0061] If the clamping unit 20 is retracted and clamps the pipe cover, the clamping unit 20 cannot be completely retracted due to the restriction of the pipe cover, resulting in the thrust shaft 11 and the thrust block 12 only being able to rise slightly and rise to the second height. In the process of the thrust shaft 11 and the thrust block 12 rising to the second height, the thrust shaft 11 drives the clamping unit 20 to retract slightly, but not completely, to clamp the pipe cover. At the same time, the thrust block 12 is still separated from the trigger plate 31, and the trigger plate 31 is still located at the first position.

[0062] The size of the retraction degree of the clamping unit 20 represents whether the clamping unit 20 has clamped the tube cover. In the present application, by converting the size of the retraction degree of the clamping unit 20 into a mechanical position change of the trigger plate 31, it is possible to intuitively, reliably and simply judge whether the clamping unit 20 has clamped the tube cover, which is convenient for judgment.

[0063] Please refer again Figure 1 and Figure 3Further, in some optional embodiments of the present application, the thrust unit 10 further includes a thrust driving member, which is mounted on the mounting seat 50 and is in transmission connection with the thrust shaft 11, and the thrust driving member is used to drive the thrust shaft 11 to drive the thrust block 12 to descend synchronously. The thrust unit 10 further includes a thrust elastic member 13, which is mounted between the mounting seat 50 and the thrust block 12, and the thrust elastic member 13 is used to provide an elastic force to drive the thrust block 12 to drive the thrust shaft 11 to rise.

[0064] That is to say, the power for the thrust shaft 11 and the thrust block 12 to descend comes from the thrust driving member, which drives the thrust shaft 11 to drive the thrust block 12 to descend synchronously. The power for the thrust shaft 11 and the thrust block 12 to ascend comes from the thrust elastic member 13, which drives the thrust block 12 to drive the thrust shaft 11 to ascend synchronously.

[0065] The thrust driving member has a telescopic shaft, which abuts against the thrust shaft 11 after extending downward to a certain length and drives the thrust shaft 11 to drive the thrust block 12 downward. During the descending process, the thrust elastic member 13 is compressed. When the telescopic shaft of the thrust driving member contracts, the telescopic shaft of the thrust driving member is separated from the thrust shaft 11, and the elastic force provided by the thrust elastic member 13 drives the thrust block 12 to drive the thrust shaft 11 upward.

[0066] For example, the thrust driving member may be a telescopic cylinder, the thrust elastic member 13 may be a spring, and the thrust elastic member 13 is sleeved outside the thrust shaft 11 .

[0067] The thrust drive member can stably provide the thrust shaft 11 with a driving force to descend, so that the thrust shaft 11 can stably descend and drive the clamping unit 20 to open. The thrust elastic member 13 has a buffering effect, and in the process of pushing the thrust block 12 to ascend, it can reduce the magnitude of the impact force between the thrust block 12 and the trigger plate 31, thereby achieving the purpose of extending the service life of the thrust block 12 and the trigger plate 31.

[0068] Of course, the way in which the thrust shaft 11 and the thrust block 12 descend and ascend is not limited to the above-mentioned one. For example, the thrust unit 10 includes a thrust driving member, which is transmission-connected to the thrust shaft 11 and is used to push the thrust shaft 11 to drive the thrust block 12 to descend or ascend synchronously.

[0069] Please refer again Figure 2In some optional embodiments of the present application, the trigger plate 31 is rotatably mounted on the mounting seat 50, and when the trigger plate 31 is in the first position, the extension direction of the trigger plate 31 is perpendicular to the lifting direction of the thrust shaft 11, and when the trigger plate 31 is in the second position, the extension direction of the trigger plate 31 intersects the lifting direction of the thrust shaft 11 at an acute angle. In other words, when the trigger plate 31 is in the first position, the trigger plate 31 is horizontally arranged, and when the trigger plate 31 is in the second position, the trigger plate 31 is tilted. The thrust block 12 rises and pushes the trigger plate 31 to rotate from the first position to the second position.

[0070] By arranging the trigger plate 31 to be rotatably connected to the mounting seat 50 , and under the pushing action of the thrust block 12 , the trigger plate 31 can simply and quickly realize the conversion from the first position to the second position by rotating.

[0071] Further, in some optional embodiments of the present application, the trigger unit 30 further includes a mounting shaft 33 and a retaining ring 34, the mounting shaft 33 is protrudingly arranged on the mounting seat 50, the trigger plate 31 is rotatably sleeved outside the mounting shaft 33, and the retaining ring 34 is installed on the mounting shaft 33 and blocks the side of the trigger plate 31 facing away from the mounting seat 50. The mounting shaft 33 is used to realize the rotational connection between the trigger plate 31 and the mounting seat 50, and the retaining ring 34 is used to prevent the trigger plate 31 from withdrawing from the mounting shaft 33, thereby improving the reliability of the installation of the trigger plate 31.

[0072] In some optional embodiments of the present application, the clamping assembly 1 also includes a trigger elastic member 32, which is mounted on the mounting seat 50 and connected to the trigger plate 31. The trigger elastic member 32 is used to provide the trigger plate 31 with an elastic force that drives the trigger plate 31 to move from the second position to the first position.

[0073] Take the trigger plate 31 being rotatably mounted on the mounting seat 50 as an example. Specifically, the trigger plate 31 is eccentrically mounted on the mounting seat 50. In the absence of the trigger elastic member 32, the trigger plate 31 is tilted under the action of gravity. By designing the trigger elastic member 32, one end of the trigger plate 31 is rotatably mounted on the mounting seat 50, and the other end of the trigger elastic member 32 is connected to the trigger elastic member 32. This can improve the balance of the trigger plate 31, so that the trigger plate 31 is maintained in the first position when not pushed by the thrust block 12. When the thrust block 12 rises and drives the trigger plate 31 to rotate relative to the mounting seat 50, the trigger plate 31 switches to the second position. When the thrust plate descends and separates from the trigger block, the trigger elastic member 32 drives the trigger plate 31 to reverse and return to the first position, so that the trigger plate 31 can be automatically reset.

[0074] It can be seen that the configuration of the trigger elastic member 32 enables the trigger plate 31 to automatically reset to the first position and maintain the first position when the trigger plate 31 is not in contact with the thrust block 12 .

[0075] Please also read Figure 5 and Figure 6 Further, in some optional embodiments of the present application, the trigger elastic member 32 includes an elastic portion 321 and hook portions 322 connected to both ends of the elastic portion 321, a hook shaft 51 is protrudingly provided on the mounting seat 50, and hook holes 52 are provided on the hook shaft 51 and the trigger plate 31, one hook portion 322 of the elastic member is hooked in the hook hole 52 of the hook shaft 51, and the other hook portion 322 of the elastic member is hooked in the hook hole 52 of the trigger plate 31. The use of the hooking installation method is conducive to improving the simplicity of installation of the trigger elastic member 32.

[0076] See also Figure 5 In some optional embodiments of the present application, the clamping assembly 1 also includes a detection unit 40, and the detection unit 40 is installed on the mounting seat 50; the detection unit 40 is used to send a first electrical signal when the trigger plate 31 is located at the first position, and is used to send a second electrical signal when the trigger plate 31 is located at the second position, the first electrical signal in the first state indicates that the clamping unit 20 is open, the first electrical signal in the second state indicates that the clamping unit 20 clamps the tube cover and is not completely retracted, and the second electrical signal indicates that the clamping unit 20 does not clamp the tube cover and is completely retracted.

[0077] The detection unit 40 is electrically connected to the controller. The controller can determine whether the clamping unit 20 is open, whether the pipe cover is clamped, etc. according to the first electrical signal and the second electrical signal when the clamping assembly 1 is in different states, which is conducive to realizing automatic work.

[0078] Furthermore, in some optional embodiments of the present application, the detection unit 40 includes a transmitter 41 and a receiver 42, and the transmitter 41 and the receiver 42 are arranged opposite to each other and define a detection space 43; when the trigger plate 31 is in the first position, the trigger plate 31 is located outside the detection space 43, and the receiver 42 receives the signal transmitted by the transmitter 41 and sends a first electrical signal; when the clamping mechanism is in the second state and the trigger plate 31 is in the second position, the trigger plate 31 partially extends into the detection space 43 and blocks the signal transmitted by the transmitter 41, and the receiver 42 cannot receive the signal transmitted by the transmitter 41 and sends a second electrical signal.

[0079] The trigger plate 31 has a trigger portion 311 and a detection portion 312 . The trigger portion 311 refers to the portion of the trigger plate 31 that contacts or separates from the thrust block 12 , and the detection portion 312 refers to the portion of the trigger plate 31 that extends into or out of the detection space 43 .

[0080] When the trigger plate 31 is in the first position, the trigger portion 311 is separated from the thrust block 12, and the detection portion 312 is located outside the detection space 43. At this time, the signal emitted by the transmitter 41 is not blocked by the detection portion 312 and can be successfully received by the receiver 42. When the receiver 42 receives the signal emitted by the transmitter 41, the receiver 42 sends a first electrical signal to the controller.

[0081] When the trigger plate 31 is in the second position, the trigger portion 311 abuts against the thrust block 12, and the detection portion 312 extends into the detection space 43. At this time, the signal transmitted by the transmitter 41 is blocked by the detection portion 312 and cannot be received by the receiver 42. When the receiver 42 cannot receive the signal transmitted by the transmitter 41, the receiver 42 sends a second electrical signal to the controller.

[0082] By changing the position of the trigger plate 31 and converting it into different electrical signals sent by the receiver 42 to the controller, it is possible to reliably and simply determine whether the tube cover is clamped.

[0083] The above-mentioned clamping assembly 1, loosening mechanism and cover opening device, in the present application, by converting the degree of retraction of the clamping unit 20 into a mechanical position change of the trigger plate 31, can intuitively, reliably and simply determine whether the clamping unit 20 has clamped the tube cover, which is convenient for judgment.

[0084] 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.

[0085] 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 clamping assembly, characterized in that: The clamping assembly has a first state and a second state, and the clamping assembly includes: Mounting seat (50); A thrust unit (10) and a clamping unit (20), wherein the thrust unit (10) is mounted on the mounting seat (50) and comprises a thrust shaft (11) and a thrust block (12), wherein the thrust block (12) is mounted on the thrust shaft (11), and the clamping unit (20) is transmission-connected to the thrust shaft (11); and A trigger unit (30) comprising a trigger plate (31), wherein the trigger plate (31) is movably mounted on the mounting seat (50) and has different first and second positions relative to the mounting seat (50); When the clamping assembly is in the first state, at least one of the thrust shaft (11) and the thrust block (12) is controlled to drive the other to descend synchronously, the thrust shaft (11) drives the clamping unit (20) to open, the thrust block (12) is separated from the trigger plate (31), and the trigger plate (31) is switched from the second position to the first position; When the clamping assembly is in the second state, at least one of the thrust shaft (11) and the thrust block (12) is controlled to drive the other to rise synchronously, and the thrust shaft (11) drives the clamping unit (20) to retract; If the clamping unit (20) does not clamp the pipe cover and can be completely retracted, the thrust shaft (11) and the thrust block (12) rise to a first height, and during the rising process, the thrust block (12) contacts the trigger plate (31) and pushes the trigger plate (31) to move from the first position to the second position; If the clamping unit (20) clamps the tube cover of the sample tube and cannot be completely retracted, the thrust shaft (11) and the thrust block (12) rise to a second height, and during the rising process, the thrust block (12) and the trigger plate (31) are still separated, and the trigger plate (31) is located at the first position; the second height is less than the first height.

2. The clamping assembly according to claim 1, characterized in that: The thrust unit (10) further comprises a thrust driving member, which is mounted on the mounting seat (50) and is transmission-connected to the thrust shaft (11), and is used to drive the thrust shaft (11) to drive the thrust block (12) to descend synchronously; The thrust unit (10) further comprises a thrust elastic member (13), wherein the thrust elastic member (13) is installed between the mounting seat (50) and the thrust block (12), and the thrust elastic member (13) is used to provide an elastic force for driving the thrust block (12) to drive the thrust shaft (11) to rise.

3. The clamping assembly according to claim 1, characterized in that: The trigger plate (31) is rotatably mounted on the mounting seat (50), and when the trigger plate (31) is located at the first position, the extension direction of the trigger plate (31) is perpendicular to the lifting direction of the thrust shaft (11), and when the trigger plate (31) is located at the second position, the extension direction of the trigger plate (31) intersects the lifting direction of the thrust shaft (11) at an acute angle; The thrust block (12) rises and pushes the trigger plate (31) to rotate from the first position to the second position.

4. The clamping assembly according to claim 3, characterized in that: The trigger unit (30) further comprises a mounting shaft (33) and a retaining ring (34); the mounting shaft (33) is protrudingly arranged on the mounting seat (50); the trigger plate (31) is rotatably sleeved outside the mounting shaft (33); and the retaining ring (34) is mounted on the mounting shaft (33) and blocks a side of the trigger plate (31) that is away from the mounting seat (50).

5. The clamping assembly according to claim 1, characterized in that: The trigger unit (30) further comprises a trigger elastic member (32), wherein the trigger elastic member (32) is mounted on the mounting seat (50) and connected to the trigger plate (31), and the trigger elastic member (32) is used to provide the trigger plate (31) with an elastic force for driving the trigger plate (31) to move from the second position to the first position.

6. The clamping assembly according to claim 5, characterized in that The trigger elastic member (32) comprises an elastic portion (321) and hooking portions (322) connected to both ends of the elastic portion (321); a hooking shaft (51) is protrudingly provided on the mounting seat (50); a hooking hole (52) is provided on the hooking shaft (51) and the trigger plate (31); one hooking portion (322) of the elastic member is hooked in the hooking hole (52) of the hooking shaft (51), and the other hooking portion (322) of the elastic member is hooked in the hooking hole (52) of the trigger plate (31).

7. The clamping assembly according to claim 1, characterized in that: The clamping assembly further comprises a detection unit (40), wherein the detection unit (40) is mounted on the mounting seat (50); The detection unit (40) is used to send out a first electrical signal when the trigger plate (31) is located at the first position, and is used to send out a second electrical signal when the trigger plate (31) is located at the second position, the first electrical signal in the first state indicating that the clamping unit (20) is open, the first electrical signal in the second state indicating that the clamping unit (20) clamps the tube cover and is not completely retracted, and the second electrical signal indicating that the clamping unit (20) does not clamp the tube cover and is completely retracted.

8. The clamping assembly according to claim 7, characterized in that The detection unit (40) comprises a transmitter (41) and a receiver (42), wherein the transmitter (41) and the receiver (42) are arranged opposite to each other and define a detection space (43); When the trigger plate (31) is located at the first position, the trigger plate (31) is located outside the detection space (43), and the receiver (42) receives the signal transmitted by the transmitter (41) and sends out the first electrical signal; when the trigger plate (31) is located at the second position, the trigger plate (31) partially extends into the detection space (43) and blocks the signal transmitted by the transmitter (41), and the receiver (42) cannot receive the signal transmitted by the transmitter (41) and sends out the second electrical signal.

9. A loosening mechanism, characterized in that: include: A clamping assembly as claimed in any one of claims 1 to 8; as well as A rotating assembly is mounted on the mounting seat (50), and the rotating assembly is used to drive the thrust shaft (11) to drive the clamping unit (20) to rotate relative to the mounting seat (50) when the clamping unit (20) clamps the pipe cover, so as to loosen the pipe cover from the pipe body.

10. A cover opening device, characterized in that: include: frame; A tube clamping mechanism, disposed on the rack and used to clamp the tube body of the sample tube; A lifting mechanism, arranged on the frame; as well as The loosening mechanism as described in claim 9 is arranged on the lifting mechanism, and the loosening mechanism moves closer to or away from the tube clamping mechanism under the drive of the lifting mechanism.

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