Automatic uncovering assembly and analyzer

By setting up a disc cover and opening and closing mechanism of the automatic opening assembly on the reagent plate of the analyzer, the problem of debris and dirt falling into the reagent bottle contaminated the reagent, effective isolation of the reagent is achieved, and the accuracy of the detection results is ensured.

CN222671832UActive Publication Date: 2025-03-25SHENZHEN COMEN MEDICAL INSTR
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Patent Information

Application Number
CN202420730438.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-09
Publication Date
2025-03-25
Estimated Expiration
2034-04-09

AI Technical Summary

Technical Problem

During the operation of the analyzer, debris, dirt, etc. fall into the open reagent bottle, causing contamination to the reagent and affecting the detection results.

Method used

An automatic cover opening assembly is designed, including setting a disk cover on the reagent plate, and opening a pick-up port on the plate cover, and setting an opening and closing mechanism at the pick-up port. The opening and closing mechanism consists of a base, guide rail, guide groove, beam frame, first connection piece, closing plate and direct drive module, and cooperates with each other to drive the closing plate to open or close the pick-up and release port.

Benefits of technology

By setting a disk cover and opening and closing mechanism on the reagent disk, a closed inner cavity is formed to reduce the communication between the inner cavity and the outside world, avoid contamination of the reagent, and ensure the accuracy of the detection results.

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Abstract

The utility model is applicable to the technical field of medical equipment, and provides an automatic uncovering component and an analyser, the automatic uncovering component comprises a tray cover arranged on a reagent tray, the tray cover is provided with a pick-and-place opening for picking and placing a reagent bottle, the pick-and-place opening is provided with an opening and closing mechanism, and the opening and closing mechanism comprises a base, a cover plate and a cover plate, the base comprises two base connecting parts which are oppositely arranged on the outer side of the pick-and-place opening, each base connecting part is provided with a guide rail, the two guide rails are parallel in the horizontal direction, and the opposite faces of at least one base connecting part are provided with guide grooves communicating the horizontal direction with the vertical direction and beam frames slidably connected with the two guide rails correspondingly; the closing plate is arranged between the beam frame and the pick-and-place opening; at least one first connecting piece is arranged between the beam frame and the closing plate, one end of the first connecting piece is hinged to the beam frame, the other end of the first connecting piece is hinged to the closing plate, and a guide block capable of sliding in the guide groove is arranged on the first connecting piece; and the straight driving module is connected with the beam frame.
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Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to an automatic cover opening component and an analyzer. Background Art

[0002] An analyzer is an instrument used to test samples. It drips a specific reagent into a test tube containing the sample, detects the changes after the reagent reacts with the sample, and obtains the test result. Different reagents are required for different test items.

[0003] Different reagents are contained in different reagent bottles, which are placed on the reagent tray. When testing, the reagents are taken according to the specific test requirements. The reagent bottles on the reagent tray are open, and the analyzer itself is a complex mechanism with many structures set above the reagent tray. During the operation of the analyzer, some debris, dirt, etc. will fall into the open reagent bottles, causing contamination to the reagents in the reagent bottles, thereby affecting the test results. Utility Model Content

[0004] The utility model provides an automatic cover opening component, which aims to solve the problem that during the operation of an analyzer, debris, dirt and the like fall into an open reagent bottle, causing contamination to the reagent in the reagent bottle, thereby affecting the detection result.

[0005] The utility model is implemented as follows: an automatic cover opening assembly comprises: a tray cover arranged on a reagent tray, the tray cover is provided with a take-in and place-out opening for taking and placing reagent bottles, an opening and closing mechanism is arranged on the take-in and place-out opening, and the opening and closing mechanism comprises:

[0006] A base, wherein the base includes two base connection parts arranged opposite to each other on the outside of the access opening, each of the base connection parts is provided with a guide rail, the two guide rails are parallel in the horizontal direction, and a guide groove connecting the horizontal direction and the vertical direction is provided on one opposite side of at least one of the base connection parts, and the guide rail is arranged at a position higher than the guide groove;

[0007] A beam frame slidably connected to the two guide rails respectively; a closing plate arranged between the beam frame and the access opening, wherein the projection of the closing plate at the access opening covers the access opening;

[0008] At least one first connecting member is disposed between the beam frame and the closing plate, one end of the first connecting member is hinged to the beam frame, and the other end is hinged to the closing plate, and a guide block that can slide in the guide groove is disposed on the first connecting member; and

[0009] A straight driving module connected to the beam, wherein the driving direction of the straight driving module is consistent with the extending direction of the guide rail.

[0010] Optionally, the guide groove includes a transverse guide groove and a vertical guide groove that are interconnected.

[0011] Optionally, the communicating positions of the transverse guide groove and the vertical guide groove are smoothly connected.

[0012] Optionally, the guide rail is arranged on the top of the base.

[0013] Optionally, a circle of sealed edges is arranged along the access opening, and a sealing step is arranged on a surface of the closing plate facing the access opening, and the sealing step is matched with an inner edge of the sealed edge.

[0014] Optionally, at least one second connecting member is further provided between the beam frame and the closing plate, one end of the second connecting member is hinged to the beam frame, and the other end is hinged to the closing plate, and the first connecting member and the second connecting member are arranged in parallel.

[0015] Optionally, the straight driving module comprises: a rotating motor, a lead screw and a connecting seat;

[0016] The output end of the rotating motor is connected to the screw rod, the connecting seat is fixedly connected to the beam frame, a threaded hole matched with the screw rod is arranged on the connecting seat, and the screw rod passes through the threaded hole.

[0017] Optionally, the beam frame is slidably connected to the guide rail via a sliding seat.

[0018] Optionally, a position sensing device is provided at the taking and placing opening.

[0019] The utility model also provides an analyzer, comprising the automatic cover opening component.

[0020] The beneficial effects achieved by the utility model are that a disc cover is provided on the reagent disc, a take-in and put-out port is provided on the disc cover, and an opening and closing mechanism is provided at the take-in and put-out port. The disc cover and the reagent disc form a closed inner cavity, so that the reagent contained in the reagent bottle in the inner cavity is not easily contaminated by the outside world. The opening and closing mechanism includes a base, a guide rail, a guide groove, a beam frame, a first connecting member, a closing plate and an execution drive mechanism, which cooperate with each other to drive the closing plate to move the base to open or close the take-in and put-out port. The opening and closing mechanism is simple to control, has a stable structure, and slides smoothly, and is convenient for controlling the opening and closing of the take-in and put-out port, further reducing the connection between the inner cavity and the outside world, and avoiding the contamination of the reagent. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the automatic cover opening assembly provided by the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the opening and closing mechanism provided by the utility model;

[0023] Figure 3 It is a cross-sectional schematic diagram of the opening and closing mechanism provided by the utility model.

[0024] Description of reference numerals:

[0025] 100, automatic cover opening assembly; 110, tray cover; 120, access opening; 130, opening and closing mechanism 131; base connection part; 1311, guide groove; 132, closing plate; 133, first connecting piece; 134, straight driving module; 1341, rotating motor; 1342, lead screw; 1343, connecting seat; 135, second connecting piece; 136, guide rail; 137, sliding seat; 138, beam frame; 140, closed edge; 150, sealing step;

[0026] 200. Reagent disk. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. In addition, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0028] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "left", "right", "horizontal", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0029] 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 technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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, an electrical connection, or mutual communication; 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. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the utility model. In addition, the utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed in itself. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0033] The utility model is characterized in that a disc cover is arranged on the reagent disc, and a take-in and put-out port is provided on the disc cover, and an opening and closing mechanism is arranged at the take-in and put-out port. The disc cover and the reagent disc form a closed inner cavity, so that the reagent contained in the reagent bottle in the inner cavity is not easily contaminated by the outside world. The opening and closing mechanism includes a base, a guide rail, a guide groove, a beam frame, a first connecting member, a closing plate and an execution driving mechanism, which cooperate with each other to drive the closing plate to move the base to realize the opening or closing of the take-in and put-out port. The opening and closing mechanism is simple to control, has a stable structure, and slides smoothly, and is convenient for controlling the opening and closing of the take-in and put-out port, further reducing the connection between the inner cavity and the outside world, and avoiding the contamination of the reagent.

[0034] Embodiment 1

[0035] like Figures 1 to 3As shown, this embodiment provides an automatic cover opening assembly 100, comprising:

[0036] The tray cover 110 is arranged on the reagent tray 200, and the tray cover 110 is provided with a take-in and put-out port 120 for taking and putting the reagent bottle, and an opening and closing mechanism 130 is arranged on the take-in and put-out port 120, and the opening and closing mechanism 130 includes:

[0037] The base includes two base connection parts arranged opposite to each other on the outside of the access opening 120, each base connection part is provided with a guide rail 136, the two guide rails 136 are parallel in the horizontal direction, and a guide groove 1311 connecting the horizontal direction and the vertical direction is provided on the opposite side of at least one base connection part, and the guide rail 136 is provided at a position higher than the guide groove 1311;

[0038] A beam frame 138 slidably connected to the two guide rails 136; a closing plate 132 disposed between the beam frame 138 and the access opening 120, wherein the projection of the closing plate 132 at the access opening 120 covers the access opening 120;

[0039] At least one first connecting member 132 is disposed between the beam frame 138 and the closing plate 132. One end of the first connecting member 132 is hinged to the beam frame 138, and the other end is hinged to the closing plate 132. A guide block that can slide in the guide groove 1311 is disposed on the first connecting member 132; and

[0040] The straight driving module 134 connected to the beam 138 has a driving direction that is consistent with an extending direction of the guide rail 136 .

[0041] The reagent tray 200 is used to hold reagent bottles for testing. Usually, the reagent tray 200 is set in a disc shape so that when the reagent tray 200 rotates around its axis, it will not affect the equipment or structure outside the reagent tray 200. A plurality of reagent positions are arranged circumferentially on the reagent tray 200, and a reagent bottle can be placed in each reagent position.

[0042] The tray cover 110 is disposed on the reagent tray 200, and forms a closed inner cavity with the reagent tray 200. The reagent bottles are isolated from the outside world in the inner cavity. Since the bottle caps of the reagent bottles in the reagent tray 200 are all in an open state, the arrangement of the tray cover 110 is conducive to preventing the reagents in the reagent bottles from being contaminated by impurities or dirt from the outside. The tray cover 110 is provided with a take-in and put-out port 120, which is used to leave a passage for taking out or putting in the reagent bottles. The take-in and put-out port 120 is provided with an opening and closing mechanism 130 for opening and closing the take-in and put-out port 120.

[0043] The opening and closing mechanism 130 includes a base, a guide rail 136, a guide groove 1311, a beam frame 138, a first connecting member 132, a closing plate 132 and an execution drive mechanism. The base is arranged on the disk cover 110, and includes two base connecting parts, which are arranged opposite to each other on both sides of the outer edge of the access opening 120 to provide positioning for the opening and closing mechanism 130. The closing plate 132 can cover the access opening 120, and the projection of the closing plate 132 at the access opening 120 completely covers the access opening 120. When the closing plate 132 covers the access opening 120, the access opening 120 is closed.

[0044] The closing plate 132 is opened and closed to the access opening 120 by the cooperation of the guide rail 136, the guide groove 1311, the beam 138 and the first connecting member 132. The two guide rails 136 are respectively arranged on the two base connection parts, and the two guide rails 136 are parallel in the horizontal direction. The two ends of the beam 138 are respectively slidably connected to the two guide rails 136, so that the beam 138 spans over the access opening 120, and the straight driving module 134 drives the beam 138 to reciprocate along the guide rails 136. A guide groove 1311 is arranged on the opposite side of at least one base connection part, and the guide groove 1311 connects the horizontal direction and the vertical direction, and the guide groove 1311 is arranged between the beam 138 and the access opening 120.

[0045] At least one first connecting member 132 is arranged between the beam frame 138 and the closing plate 132. The two ends of the first connecting member 132 are respectively hinged to the beam frame 138 and the closing plate 132, and a guide block is arranged on the first connecting member 132. The guide block is adapted to the guide groove 1311. Driven by the guide block, the first connecting member 132 moves along the guide groove 1311.

[0046] Under the action of the guide rail 136, the beam 138 moves linearly in the horizontal direction, and its position in the vertical direction remains unchanged. One end of the first connecting member 132 is hinged to the closing plate 132, and the plate surface of the closing plate 132 faces downward. The other end of the first connecting member 132 is hinged to the beam 138, and the distance between the closing plate 132 and the beam 138 can be changed by changing the hinge angle of the first connecting member 132 and the beam 138.

[0047] The guide groove 1311 connects the horizontal direction and the vertical direction. Specifically, the guide groove 1311 can be an inverted "L" shape, a "C" shape, or other shapes that connect the horizontal direction and the vertical direction. Taking the inverted "L" shape as an example, when the direction guided by the guide groove 1311 is parallel to the guide rail 136, the hinge angle between the first connecting member 132 and the beam frame 138 does not change, and the first connecting member 132 moves horizontally with the beam frame 138, and drives the closing plate 132 to move in the horizontal direction; when the direction guided by the guide groove 1311 is perpendicular to the guide rail 136, the first connecting member 132 does not move in the horizontal direction, and the hinge angle with the beam frame 138 changes, driving the closing plate 132 to move in the vertical direction.

[0048] In the present embodiment, since the disc cover 110 is arranged on the reagent disc 200, and the access opening 120 is provided on the disc cover 110, the opening and closing mechanism 130 is arranged at the access opening 120. The disc cover 110 and the reagent disc 200 form a closed inner cavity, so that the reagent contained in the reagent bottle in the inner cavity is not easily contaminated by the outside world. The opening and closing mechanism 130 includes a base, a guide rail 136, a guide groove 1311, a beam frame 138, a first connecting member 132, a closing plate 132 and an execution drive mechanism, which are mutually linked and coordinated to drive the closing plate 132 to realize the opening or closing of the access opening 120 for the movement of the base. The opening and closing mechanism 130 is simple to control, has a stable structure, and slides smoothly, and is convenient for controlling the opening and closing of the access opening 120, further reducing the connection between the inner cavity and the outside world, and avoiding the contamination of the reagent.

[0049] In one embodiment, the guide groove 1311 includes a transverse guide groove and a vertical guide groove that are interconnected, the guide direction of the transverse guide groove is parallel to the guide rail 136, and the guide direction of the vertical guide groove is perpendicular to the guide rail 136. When the closing plate 132 is needed to close the access port 120, the closing plate 132 is now horizontally moved to the upper side of the corresponding position of the access port 120 under the action of the transverse guide groove and the first connecting member 132, and then vertically moved to cover the access port 120 under the action of the vertical guide groove and the first connecting member 132, completing the closure of the access port 120. The distance that the closing plate 132 needs to move in the vertical direction is small, so that the overall height of the automatic cover opening assembly 100 is relatively low, and it is not easy to interfere with other components of the analyzer.

[0050] Furthermore, the connecting position of the transverse guide groove and the vertical guide groove is smoothly connected, which drives the movement of the closing plate 132 to be smoother and avoids sudden changes in the direction of the closing plate 132. At the same time, it can also avoid sharp points at the connecting position from damaging the guide block on the first connecting member 132, thereby extending the service life of the parts.

[0051] In another embodiment, the beam frame 138 is slidably connected to the guide rail 136 via a slide seat 137, so as to facilitate maintenance or replacement.

[0052] Embodiment 2

[0053] like Figure 2 and Figure 3 As shown, based on the first embodiment, a circle of sealed edge 140 is set along the access opening 120, and a sealing step 150 is set on the side of the closing plate 132 facing the access opening 120, and the sealing step 150 is matched with the inner edge of the sealed edge 140.

[0054] The sealing step 150 is matched with the inner edge of the sealed edge 140. When the closing plate 132 covers the access port 120, under the action of the sealing step 150 and the sealed edge 140, the closing plate 132 can better isolate the inner cavity formed by the reagent disk 200 and the disk cover 110 from the outside world, thereby preventing external dirt from contaminating the reagent in the reagent bottle.

[0055] In one embodiment, the sealing edge 140 is integrally connected to the base connection portion.

[0056] Embodiment 3

[0057] like Figures 1 to 3 As shown, on the basis of the first embodiment, at least one second connecting member 135 is further arranged between the beam frame 138 and the closing plate 132, one end of the second connecting member 135 is hinged to the beam frame 138, and the other end is hinged to the closing plate 132, and the first connecting member 132 and the second connecting member 135 are arranged in parallel.

[0058] The second connecting member 135 serves as a connection and auxiliary support to help ensure the orientation of the closing plate 132. The first connecting member 132 and the second connecting member 135 are arranged in parallel, and when the hinge angle between the first connecting member 132 and the beam frame 138 changes, the hinge angle between the second connecting member 135 and the second connecting member 135 also changes synchronously.

[0059] Specifically, since the hinge angles of the first connecting member 132 and the second connecting member 135 with the beam frame 138 are different, and the first connecting member 132 and the second connecting member 135 are parallel, the second connecting member 135 is equal in length to the first connecting member 132, thereby ensuring that the closing plate 132 always remains horizontal during movement.

[0060] Embodiment 4

[0061] like Figure 2 As shown, based on the first embodiment, the straight driving module 134 includes: a rotating motor 1341, a screw rod 1342 and a connecting seat 1343;

[0062] The output end of the rotating motor 1341 is connected to the screw rod 1342 , and the connecting seat 1343 is fixedly connected to the beam frame 138 . The connecting seat 1343 is provided with a threaded hole matched with the screw rod 1342 , and the screw rod 1342 passes through the threaded hole.

[0063] One end of the screw rod 1342 is connected to the output end of the rotating motor 1341, and the rotating motor 1341 drives the screw rod 1342 to rotate. The connection seat 1343 is provided with a threaded hole adapted to the screw rod 1342, and the screw rod 1342 is threadedly connected to the connection seat 1343. The connection seat 1343 is fixedly connected to the beam frame 138. When the screw rod 1342 rotates, the position of the threaded connection between the connection seat 1343 and the screw rod 1342 changes, and the connection seat 1343 moves forward or backward on the screw rod 1342 along the extension direction of the screw rod 1342, driving the beam frame 138 to move forward or backward synchronously.

[0064] It can be understood that a fixed connection means that no relative movement can occur between the parts after the connection, including detachable fixed connections, such as screw connections, pin connections, snap connections, etc., and non-detachable fixed connections include welding, riveting, gluing, etc., which are not limited here.

[0065] In this embodiment, the rotational force of the rotating motor 1341 is converted into a force that pushes the connecting seat 1343 to move straight by utilizing the cooperation of the rotating motor 1341, the threaded hole on the connecting seat 1343 and the screw rod 1342. The structure is simple, the processing precision is low, the production cost is low, and it is easy to inspect or maintain.

[0066] Embodiment 5

[0067] On the basis of the first embodiment, a position sensing device is provided at the taking and placing opening 120 .

[0068] The position sensing device is used to sense the closing status of the closing plate 132 and the access port 120. When the closing plate 132 completely closes the access port 120, the position sensing device is triggered and sends a control signal to stop the driving module 134 from working, thereby preventing the closing plate 132 from excessive movement, crushing the disk cover 110 or causing damage to the components of the driving module 134.

[0069] The position sensing device can be a contact sensing device, which is touched when the closing plate 132 is closed in place at the access port 120; the position sensing device can also be a light sensing device, which is blocked when the closing plate 132 is closed in place at the access port 120.

[0070] The specific installation position of the position sensing device needs to be determined according to the closed state of the closing plate 132 and the access opening 120. If the closing plate 132 covers the access opening 120, the position sensing device is arranged on the side of the closing plate 132 facing the access opening 120; if the closing plate 132 is embedded in the access opening 120, the position sensing device is arranged on the side of the closing plate 132.

[0071] Embodiment 6

[0072] This embodiment further provides an analyzer, comprising the automatic cover opening assembly 100 of any one of the first to fifth embodiments.

[0073] Other implementations and beneficial effects of the analyzer of this embodiment are equivalent to the beneficial effects of the automatic cover opening assembly 100 described above, and will not be described in detail here.

[0074] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic cover opening assembly, characterized in that: include: A tray cover is arranged on the reagent tray, the tray cover is provided with a receiving and placing opening for taking and placing the reagent bottle, an opening and closing mechanism is arranged on the receiving and placing opening, and the opening and closing mechanism comprises: A base, wherein the base includes two base connection parts arranged opposite to each other on the outside of the access opening, each of the base connection parts is provided with a guide rail, the two guide rails are parallel in the horizontal direction, and a guide groove connecting the horizontal direction and the vertical direction is provided on one opposite side of at least one of the base connection parts, and the guide rail is arranged at a position higher than the guide groove; A beam frame slidably connected to the two guide rails respectively; a closing plate arranged between the beam frame and the access opening, wherein the projection of the closing plate at the access opening covers the access opening; At least one first connecting member is arranged between the beam frame and the closing plate, one end of the first connecting member is hinged to the beam frame, and the other end is hinged to the closing plate, and a guide block which can slide in the guide groove is arranged on the first connecting member; as well as A straight driving module connected to the beam, wherein the driving direction of the straight driving module is consistent with the extending direction of the guide rail.

2. The automatic cover opening assembly according to claim 1, characterized in that: The guide groove comprises a transverse guide groove and a vertical guide groove which are interconnected.

3. The automatic cover opening assembly according to claim 2, characterized in that: The communicating positions of the transverse guide groove and the vertical guide groove are smoothly connected.

4. The automatic cover opening assembly according to claim 1, characterized in that: The guide rail is arranged on the top of the base.

5. The automatic cover opening assembly according to claim 1, characterized in that: A circle of sealed edge is arranged along the access opening, and a sealing step is arranged on a surface of the closing plate facing the access opening, and the sealing step is matched with the inner edge of the sealed edge.

6. The automatic cover opening assembly according to claim 1, characterized in that: At least one second connecting member is also arranged between the beam frame and the closing plate, one end of the second connecting member is hinged to the beam frame, and the other end is hinged to the closing plate, and the first connecting member and the second connecting member are arranged in parallel.

7. The automatic cover opening assembly according to claim 1, characterized in that: The straight driving module comprises: a rotating motor, a lead screw and a connecting seat; The output end of the rotating motor is connected to the screw rod, the connecting seat is fixedly connected to the beam frame, a threaded hole matched with the screw rod is arranged on the connecting seat, and the screw rod passes through the threaded hole.

8. The automatic cover opening assembly according to claim 1, characterized in that: The beam frame is slidably connected to the guide rail via a sliding seat.

9. The automatic cover opening assembly according to claim 1, characterized in that: A position sensing device is arranged at the taking and placing opening.

10. An analyzer, characterized in that: An automatic lid opening assembly comprising any one of claims 1 to 9.