Sample analyzer

Abstract

The invention discloses a sample analyzer which comprises an accommodating mechanism and a cover opening mechanism, and the cover opening mechanism comprises a support, a clamping piece, a first driving piece and a first abutting piece. The first driving part drives the clamping part to move from the first position to the second position to realize the cover pulling action, so that the container cover is pulled away from the sample container by the clamping part. The cover throwing action is achieved in the process that the first driving piece drives the clamping piece to move from the second position to the third position, and the pulled container cover is separated from the clamping piece. According to the scheme, driving force is provided for the cap throwing action and the cap pulling action of the cap opening mechanism through the first driving piece, compared with an existing structure that one driving piece is adopted for driving to complete the cap opening action and the other driving piece is adopted for driving to complete the cap throwing action, one driving part is omitted, the material cost of the cap opening mechanism can be reduced, and the cost of the cap opening mechanism is reduced. And the assembling difficulty can be reduced, and meanwhile the overall structural compactness of the cover opening mechanism can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sample analysis, and in particular to a sample analyzer. Background Art

[0002] The sample analyzer is used to analyze and process samples. The analyzed sample is stored in a sample container, and the port cover of the sample container is provided with a container cover to form a relatively closed space, thereby preventing the sample in the sample container from being contaminated. The sample analyzer includes a cover opening mechanism. Before performing sample analysis, in order to facilitate obtaining the sample in the sample container, the cover opening mechanism is used to separate the container cover on the sample container from the sample container. The cover opening mechanism includes a clamping member, and the clamping member has a clamping state of clamping the container cover and an opening state of releasing the container cover. After the clamping member clamps the container cover on the sample container, the container cover can be pulled away from the sample container. When the container cover is pulled away from the sample container, in order to facilitate the clamping member to open the cover of the subsequent sample container, the currently clamped container cover needs to be released.

[0003] In the related art, after the clamping member clamps the container cover on the sample container, a driving device is used to drive the clamping member to move in a direction away from the sample container, thereby pulling the container cover on the sample container off the sample container. When the container cover is separated from the sample container, another driving device is used to drive the clamping member to move from the clamping state to the open state, thereby completing the lid-throwing action of the container cover. In this solution, two sets of driving devices are used to correspondingly complete the lid-opening action and the lid-throwing action, which is relatively costly. Summary of the invention

[0004] The main purpose of the present invention is to provide a sample analyzer, which can reduce the material cost of the cover opening mechanism of the sample analyzer.

[0005] To achieve the above object, the present invention provides a sample analyzer, including a containing mechanism and a cover opening mechanism, wherein the containing mechanism is used to contain a sample container; the cover opening mechanism includes:

[0006] Bracket;

[0007] A clamping member, movably connected to the bracket, the clamping member comprises a first clamping arm and a second clamping arm, the first clamping arm and the second clamping arm are used to clamp the container cover on the sample container together, the clamping member has a clamping state for clamping the container cover and an open state for releasing the container cover, the clamping member has a first position in which the container cover is in the clamping state and is on the sample container, and a second position in which the container cover is in the clamping state and is pulled away from the sample container, the clamping member also has a third position in which the container cover is in the open state, and the second position is located between the first position and the third position;

[0008] a first driving member connected to the support, the first driving member driving the clamping member to move at least between the first position and the second position and between the second position and the third position relative to the support, and the container cover on the sample container is pulled away from the sample container during the movement of the clamping member from the first position to the second position; and

[0009] The first abutment is connected to the bracket. The clamping member is away from the first abutment when in the first position. In the process of the clamping member moving from the first position to the second position and from the second position to the third position, the clamping member gradually approaches the first abutment from being away from the first abutment until at least one of the first clamping arm and the second clamping arm abuts against the first abutment. The abutment causes the first clamping arm and the second clamping arm to move relative to each other, so that the clamping member is in an open state in the third position.

[0010] In some embodiments, the first abutment member is fixedly connected to the bracket.

[0011] In some embodiments, the first position is below the second position, the second position is below the third position, and the first driving member drives the clamping member to move between the first position and the second position and between the second position and the third position along a straight line in the vertical direction.

[0012] In some embodiments, the clamping member includes a base, and the first clamping arm and / or the second clamping arm are hinged to the base. During the process of the clamping member moving from the second position to the third position, at least one of the first clamping arm and the second clamping arm abuts against the first abutment member, so that the clamping arm abutting against the first abutment member rotates relative to the base, thereby placing the clamping member in an open state.

[0013] In some embodiments, the first clamping arm is hinged to the base, and the first clamping arm abuts against the first abutment member so that the first clamping arm rotates relative to the base, wherein:

[0014] The first clamping arm comprises a first support arm and a second support arm connected to each other, the first support arm is used to clamp the container cover, and the second support arm is hinged to the base; when the clamping member moves from the second position to the third position, the second support arm abuts against the first abutment member.

[0015] In some embodiments, the second position is located below the third position; the first arm is extended in the vertical direction, the second arm includes a first section extending in the horizontal direction and a second section extending in the vertical direction, the upper end of the first arm is connected to the second section, the first section is hinged to the base, the first abutment is arranged above the first section and during the process of the clamping member moving from the second position to the third position, the first section abuts against the first abutment.

[0016] In some embodiments, the first abutment member includes a first roller, and at least one of the first clamping arm and the second clamping arm abuts against the first roller and rolls relative to the first roller.

[0017] In some embodiments, the cover opening mechanism further comprises:

[0018] a first recovery member, the first recovery member being used to recover the container cover released by the clamping member;

[0019] The guide member includes a transmission part and a guide part. The first driving member is in transmission connection with the transmission part to drive the transmission part to move. The movement of the transmission part drives the guide part to move between the avoidance position and the guide position. When the guide part is in the avoidance position, the guide part is located outside the movement path of the clamping member from the first position to the second position. When the guide part is in the guide position, the guide part is located below the clamping member to guide the container cover released by the clamping member to the first recovery member.

[0020] When the clamp is located at the third position, the guide portion is at the guide position, and when the clamp is located between the first position and the second position, the guide portion is at the avoidance position.

[0021] In some embodiments, the cover opening mechanism also includes a second abutment member provided on the clamping member. When the first driving member drives the clamping member to move from the second position to the third position, the second abutment member abuts against the transmission part to drive the transmission part to move. The movement of the transmission part drives the guide part to move from the avoidance position to the guide position.

[0022] In some embodiments, the transmission part is hinged to the bracket, and the second abutment member includes a second roller, which is used to abut the transmission part and roll relative to the transmission part; when the guide part is in the avoidance position, the surface of the transmission part abutting against the second roller is tilted from bottom to top in the direction of the second roller, or the transmission part as a whole is tilted from bottom to top in the direction of the second roller.

[0023] In some embodiments, the first abutment member abuts against the first clamping arm, the second abutment member is disposed on a side of the second clamping arm away from the first clamping arm, and the guide portion is disposed on a side of the second abutment member away from the second clamping arm.

[0024] In some embodiments, the first recovery member is located below the clamping member, the guide portion includes a guide surface for guiding the container cover released by the clamping member, and when the guide portion is in the guiding position, the guide surface is located below the clamping member and tilted downward.

[0025] In some embodiments, the guide portion is provided with a cavity. When the guide portion is in the guiding position, the opening of the cavity is located below the container cover clamped by the clamping member. The opening size of the cavity is configured so that the container cover cannot enter the cavity.

[0026] In some embodiments, the first position is located below the second position, the second position is located below the third position, and the first driving member drives the clamping member to move between the first position and the second position and between the second position and the third position along a straight line in the vertical direction;

[0027] The cover opening mechanism also includes:

[0028] A first sliding block is slidably connected to the bracket, and the first driving member drives the first sliding block to slide in a vertical direction;

[0029] The second slider is slidably connected to the bracket and can slide in the vertical direction. The second slider is located above the first slider. The second slider is connected to the clamping member. When the first driving member drives the first slider to move upward, the first slider abuts against the second slider to drive the clamping member to move upward to the third position. When the first driving member stops driving, the clamping member slides to the first position with the second slider under the action of gravity;

[0030] a sensor configured to generate a control signal when detecting that the first slider is separated from the second slider;

[0031] The first limiting member is movably connected to the clamping member and is located between the first clamping arm and the second clamping arm. The clamping member also has a pre-clamping state before clamping the container cover. The clamping member also has a fourth position in which the container cover is on the sample container and is in the pre-clamping state. The fourth position is located between the first position and the second position. When the clamping member moves downward to the fourth position, the first limiting member abuts between the second slider and the container cover of the sample container, so that when the first limiting member moves downward to the first position, under the abutment of the first limiting member, the second slider moves upward relative to the first slider, so that the first slider is separated from the second slider.

[0032] The controller is configured to control the first driving member to drive the first slider to slide upward after obtaining a control signal during the process of controlling the first driving member to drive the first slider to slide downward, so as to drive the clamping member to move from the first position to the second position and then to the third position.

[0033] In some embodiments, the clamping member includes a base, the first clamping arm is hinged to the base, the center of gravity of the first clamping arm is located below the rotation center of the first clamping arm, and the line connecting the center of gravity of the first clamping arm and the rotation center of the first clamping arm is an oblique line extending from top to bottom and toward the second clamping arm;

[0034] And / or, the clamping member includes a base, the second clamping arm is hinged to the base, the center of gravity of the second clamping arm is located below the rotation center of the second clamping arm, and the line connecting the center of gravity of the second clamping arm and the rotation center of the second clamping arm is an oblique line extending from top to bottom and toward the first clamping arm.

[0035] In some embodiments, the clamping member includes a base, the clamping member further includes an elastic member, and the elastic member is connected between at least one of the first clamping arm and the second clamping arm and the base.

[0036] In some embodiments, the accommodating mechanism includes a placement position for placing the sample container, a second limiting member is provided on one side of the placement position, and a third abutment member is provided on the other side; the sample analyzer also includes a second driving member drivingly connected to the third abutment member, and the second driving member drives the third abutment member to move in a horizontal direction to clamp the sample container in the placement position between the third abutment member and the second limiting member.

[0037] In some embodiments, the sample analyzer further comprises:

[0038] The sample input and output mechanism includes an input module and an output module;

[0039] A sample analysis mechanism, used for analyzing and processing the sample in the sample container;

[0040] A transmission mechanism, used to transmit the sample container provided by the input module to the sample analysis mechanism, and to transmit the sample container analyzed by the sample analysis mechanism to the output module;

[0041] The accommodating mechanism is located in the input module, and the transmission mechanism transmits the sample container after the cover is opened in the input module to the sample analysis mechanism; alternatively, the accommodating mechanism and the sample input and output mechanism are separately arranged, and the transmission mechanism dispatches the sample container provided by the input module to the accommodating mechanism and outputs it to the sample analysis mechanism after the cover is opened.

[0042] The embodiment of the second aspect of the present invention further provides a sample analyzer, comprising a accommodating mechanism and a cover opening mechanism, wherein the accommodating mechanism is used to accommodate the sample container; the cover opening mechanism comprises:

[0043] Bracket;

[0044] A clamping member, movably connected to the bracket, the clamping member has a clamping state for clamping the container cover and an open state for releasing the container cover, the clamping member has a first position in which the container cover is on the sample container and a second position in which the container cover is pulled away from the sample container, the clamping member also has a third position in which the container cover is in the open state, and the second position is between the first position and the third position;

[0045] a first driving member connected to the bracket, the first driving member driving the clamping member to move at least between the first position and the second position and between the second position and the third position relative to the bracket, and the clamping member pulls the container cover on the sample container in the accommodating mechanism away from the sample container during the movement from the first position to the second position;

[0046] a cover-removing mechanism, wherein when the clamping member moves from the second position to the third position, the clamping member releases the container cover under the action of the cover-removing mechanism;

[0047] a first recovery member, the first recovery member being used to recover the container cap detached from the clamping member; and

[0048] The guide member includes a transmission part and a guide part. The first driving member is in transmission connection with the transmission part to drive the transmission part to move. The movement of the transmission part drives the guide part to move between the avoidance position and the guide position. When the guide part is in the avoidance position, the guide part is outside the movement path of the clamping member from the first position to the second position. When the guide part is in the guide position, the guide part is located below the clamping member to guide the container cover released by the clamping member to the first recovery member.

[0049] When the clamp is located at the third position, the guide portion is at the guide position, and when the clamp is located between the first position and the second position, the guide portion is at the avoidance position.

[0050] In some embodiments, the sample analyzer also includes a second abutment member disposed on the clamping member. When the first driving member drives the clamping member to move from the second position to the third position, the second abutment member abuts against the transmission part to drive the transmission part to move. The movement of the transmission part drives the guide part to move from the avoidance position to the guide position.

[0051] In some embodiments, the transmission part is hinged to the bracket, and the second abutment member includes a second roller, which is used to abut the transmission part and roll relative to the transmission part; when the guide part is in the avoidance position, the surface of the transmission part abutting against the second roller is tilted from bottom to top in the direction of the second roller, or the transmission part as a whole is tilted from bottom to top in the direction of the second roller.

[0052] In some embodiments, the guide portion is provided with a cavity. When the guide portion is in the guiding position, the opening of the cavity is located below the container cover clamped by the clamping member. The opening size of the cavity is configured so that the container cover cannot enter the cavity.

[0053] Compared with the prior art, the present invention has the following beneficial effects:

[0054] In the technical solution of the present invention, the first driving member drives the clamping member to move from the first position to the second position to realize the uncapping action, so that the container cover is pulled away from the sample container by the clamping member. The first driving member drives the clamping member to move from the second position to the third position to realize the cap throwing action, so that the pulled container cover is separated from the clamping member. Specifically, in the process of the clamping member moving from the first position to the second position and from the second position to the third position, the clamping member gradually approaches the first abutment member from being away from the first abutment member until at least one of the first clamping arm and the second clamping arm abuts against the first abutment member, and the abutment action causes the first clamping arm and the second clamping arm to move relative to each other, so that the clamping member is in an open state at the third position. In this solution, the cap throwing action and the cap uncapping action of the cover opening mechanism are both provided with driving force by the first driving member. Compared with the existing structure that uses one driving member to drive the cover opening action and another driving member to drive the cap throwing action, one driving component is reduced, which can not only reduce the material cost of the cover opening mechanism, but also reduce the assembly difficulty, and at the same time, it can also improve the overall structural compactness of the cover opening mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0056] Figure 1 It is a side view schematic diagram of the cover opening mechanism and the accommodating mechanism combination of the first embodiment of the present invention; wherein the clamping member is in the first position and in the clamping state, and the guide portion is in the avoidance position;

[0057] Figure 2 for Figure 1 A local enlarged schematic diagram of the middle A;

[0058] Figure 3 It is a side view schematic diagram of the cover opening mechanism and the accommodating mechanism combination of the first embodiment of the present invention; wherein the clamping member is in the third position and in the open state, and the guide portion is in the guide position;

[0059] Figure 4 for Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0060] Figure 5 for Figure 3 A partial enlarged schematic diagram of point C in the middle;

[0061] Figure 6It is a side view schematic diagram of the combination of the clamping member and the second abutting member of the first embodiment of the present invention; wherein the clamping member is in the third position and in the open state;

[0062] Figure 7 It is a three-dimensional schematic diagram of the combination of the clamping member and the second abutting member of the first embodiment of the present invention; wherein the clamping member is in the third position and in an open state;

[0063] Figure 8 It is a three-dimensional schematic diagram of a first viewing angle of a combination of a clamping member, a first slider, a second slider, a slide rail, a driving motor, a driving belt and other components in a first embodiment of the present invention;

[0064] Fig. 9 A perspective schematic diagram of a second viewing angle of a combination of a clamping member, a first slider, a second slider, a slide rail, a drive motor, a drive belt, and other components in a first embodiment of the present invention;

[0065] Fig.10 A three-dimensional schematic diagram of a sample transport mechanism and a sample pressing mechanism of a sample analyzer provided in a second embodiment of the present application when the pressing member is located far away from the cover opening station;

[0066] Fig.11 for Fig.10 A side view of the sample transport mechanism and the sample clamping mechanism shown;

[0067] Fig.12 A three-dimensional schematic diagram of a sample transport mechanism and a sample pressing mechanism of a sample analyzer provided in a second embodiment of the present application when the pressing member is located at an abutting position;

[0068] Fig.13 for Fig.12 A side view of the sample transport mechanism and the sample clamping mechanism shown;

[0069] Fig.14 A schematic diagram of a cover opening mechanism and a fourth driving member of a sample analyzer provided in a third embodiment of the present invention;

[0070] Fig.15 for Fig.14 A schematic diagram of the cover opening mechanism in FIG.

[0071] Fig.16 for Fig.14 A schematic diagram of the second clamping arm and the first clamping arm clamping the container cover;

[0072] Fig.17 for Fig.16 A schematic diagram of the first clamping arm moving to an open position;

[0073] Fig.18A schematic diagram of a cover opening mechanism in which the first clamping arm provided in the third embodiment of the present invention is used to abut against the top surface of the container cover;

[0074] Fig.19 for Fig.18 A schematic diagram of the first clamping arm moving to an open position;

[0075] Fig. 20 for Fig.16 A cross-sectional view of the structure shown along section AA;

[0076] Fig.21 is a schematic diagram of the third embodiment in which the cover opening mechanism clamps the container cover when both the first blocking portion and the second blocking portion are connected to the first clamping arm;

[0077] Fig. 22 is a schematic diagram of the third embodiment in which the cover opening mechanism clamps the container cover when the first blocking portion and the second blocking portion are not connected to any clamping arm;

[0078] Fig.23 is a schematic diagram of the third embodiment in which the first blocking portion and the second blocking portion are respectively connected to different clamping arms when the cover opening mechanism clamps the container cover;

[0079] Fig.24 for Fig.14 A schematic diagram of the cover opening mechanism when the second guide surface abuts against the container cover;

[0080] Fig.25 for Fig.14 A schematic diagram of the cover opening mechanism when the limiter abuts against the container cover;

[0081] Fig.26 for Fig.14 A schematic diagram of the cover opening mechanism when the first clamping arm abuts against the abutment member;

[0082] Fig. 27 A schematic diagram of a motion mechanism and a part of the structure of a sample analyzer provided in a fourth embodiment of the present invention;

[0083] Fig.28 for Fig. 27 A partial schematic diagram of a top view of ;

[0084] Fig.29 for Fig. 27 Schematic diagram of some structures in ;

[0085] Fig.30 for Fig. 27 A schematic diagram of a state in which the connecting member is in a fifth position;

[0086] Fig.31The motion mechanism and part of the structure of the sample analyzer provided in the fourth embodiment of the present invention are Figure 4 Top view of the state;

[0087] Fig.32 for Fig. 27 A schematic diagram of another state when the connecting member is in the fifth position;

[0088] Fig.33 A schematic diagram of a fourth embodiment of the present invention showing that the detection member is in a non-pressed state when the connecting member is in the fifth position and the fifth abutting member is in the seventh position;

[0089] Fig.34 for Fig.33 A schematic diagram showing that the detection member is in a pressed state when the middle connecting member is in the fifth position and the fifth abutting member is in the seventh position;

[0090] Fig.35 for Fig.33 A schematic diagram showing a situation in which the middle connecting member is in the fifth position and the fifth abutting member is in the seventh position;

[0091] Fig.36 A schematic diagram of a structure in which two detection components are provided in a fourth embodiment of the present invention;

[0092] Fig.37 for Fig.36 A top view of the illustrated embodiment and partial structure;

[0093] Fig.38 for Fig.36 A top view of the fifth abutment member in the embodiment shown in the first seventh position

[0094] Fig.39 for Fig.36 The illustrated embodiment is a top view of the fifth abutment member in the second seventh position.

[0095] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0096] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0097] In the related art, after the clamping member clamps the container cover on the sample container, a driving device is used to drive the clamping member to move in a direction away from the sample container, so that the container cover on the sample container is pulled off the sample container. When the container cover is separated from the sample container, another driving device is used to drive the clamping member to move from the clamping state to the open state, so as to complete the cover-throwing action of the container cover. Using two driving members to realize the cover-opening action and the cover-throwing action is relatively costly.

[0098] In view of this, see Figure 1-Figure 9 This embodiment provides a sample analyzer, which is used to analyze samples. The sample analyzed by the sample analyzer depends on actual needs. In this embodiment, the sample analyzer is used to analyze and process blood samples as an example for description.

[0099] In some embodiments, the sample analyzer may include a sample input and output mechanism, a sample analysis mechanism, a transmission mechanism, and an opening mechanism 100. The sample input and output mechanism may include an input module and an output module, the input module is used to obtain samples from the outside and temporarily store the samples, the output module is used to obtain samples that have been analyzed and processed and temporarily store the samples, and the operator can take out the samples that have been analyzed and processed from the output module. The sample analyzer may also include a accommodating mechanism 200, the accommodating mechanism 200 is used to accommodate a sample container 132 loaded with a sample, the sample container 132 is covered with a container cover 133, and the opening mechanism 100 is used to open the sample container 132 accommodated in the accommodating mechanism 200. In some embodiments, the accommodating mechanism 200 may be located in the input module, and the transmission mechanism transmits the sample container 132 after the cover is opened in the input module to the sample analysis mechanism, so as to analyze and process the sample in the sample container 132. In this embodiment, the opening mechanism 100 opens the sample container 132 located in the input module. In other embodiments, the accommodating mechanism 200 can be provided separately from the sample input and output mechanism, and the transmission mechanism dispatches the sample container 132 provided by the input module to the accommodating mechanism 200 and outputs it to the sample analysis mechanism after opening the cover. In this embodiment, the opening cover mechanism 100 opens the cover of the sample container 132 leaving the input module.

[0100] See also Figure 1-Figure 4 The cover opening mechanism 100 includes a support 101, a clamping member 103, a first driving member 111 and a first abutting member 114. The cover opening mechanism 100 is used to pull the container cover 133 covering one end of the opening of the sample container 132 away from the sample container 132, so that the subsequent sample analysis mechanism can easily obtain the sample in the sample container 132, thereby analyzing and processing the sample.

[0101] The clamping member 103, the first driving member 111 and the first abutting member 114 are all connected to the bracket 101. Specifically, the clamping member 103 is movably connected to the bracket 101. The clamping member 103 can be slidably connected to the bracket 101 and can slide along a straight line, a curve or a folded line relative to the bracket 101. The clamping member 103 can also be rotatably connected to the bracket 101 and can rotate relative to the bracket 101. The following description is based on an example in which the clamping member 103 is configured to slide relative to the bracket 101 and slides along a straight line relative to the bracket 101.

[0102] The clamping member 103 has a clamping state for clamping the container cover 133 and an opening state for releasing the container cover 133. When the clamping member 103 is in the clamping state, the clamping member 103 can clamp the container cover 133 when the container cover 133 is connected to the sample container 132, and can also clamp the container cover 133 after the container cover 133 is separated from the sample container 132. Figure 1-Figure 2 ,as well as Figure 6-Figure 7 In some embodiments, the clamping member 103 includes a first clamping arm 104 and a second clamping arm 109 (in other embodiments, the clamping member 103 may also include a third clamping arm or more clamping arms, and the following is an example in which the clamping member 103 only includes the first clamping arm 104 and the second clamping arm 109), and the first clamping arm 104 and the second clamping arm 109 can clamp the container cover 133 together or release the clamped container cover 133 by generating relative motion. Specifically, in this embodiment, the first clamping arm 104 and the second clamping arm 109 can clamp the container cover 133 or release the container cover 133 by rotating relative to each other. Specifically, the clamping member 103 may include a base 110, and the first clamping arm 104 and / or the second clamping arm 109 are hinged to the base 110, so that the first clamping arm 104 and / or the second clamping arm 109 can rotate relative to the base 110. In other embodiments, the first clamping arm 104 and the second clamping arm 109 can move toward each other to clamp the container cover 133, and move away from each other to release the clamped container cover 133. In this solution, the clamping member 103 can include a base 110, and the first clamping arm 104 and / or the second clamping arm 109 are slidably connected to the base 110.

[0103] The clamping member 103 has a first position in which the clamping member 103 is in a clamping state and clamps the container cover 133 connected to the sample container 132, a second position in which the clamping member 103 is in a clamping state and the container cover 133 is pulled away from the sample container 132, and a third position in which the container cover 133 is pulled away from the sample container 132 and is in an open state. During the movement of the clamping member 103 from the first position to the second position, the container cover 133 on the sample container 132 is pulled upward from the sample container 132, and the clamping member 103 continues to maintain the clamping state during the process. During the process of pulling away the container cover 133, the clamping member 103 can pull the container cover 133 away from the sample container 132 through the friction between the first clamping arm 104 and the second clamping arm 109 and the container cover 133. The clamping member 103 can also be provided with a hook member, and the hook member abuts against the lower end position of the container cover 133 to push the container cover 133 upward away from the sample container 132. During the movement of the clamping member 103 from the second position to the third position, the clamping member 103 changes from the clamping state at the second position to the open state at the third position, so that the container cover 133 is released when the clamping member 103 is at the third position.

[0104] See also Figure 1-Figure 2 In the structure shown in the figure, the clamping member 103 is in the first position. At this time, the container cover 133 is covered on the sample container 132, the clamping member 103 is in a clamping state, and the first clamping arm 104 and the second clamping arm 109 clamp the container cover 133 together. At this time, the container cover 133 is covered on the port of the sample container 132 to maintain the sealed state of the sample container 132. Figure 3-Figure 4 ,as well as Figure 6-Figure 7 In the structure shown in the figure, the clamping member 103 is in the third position. At this time, the clamping member 103 is in an open state, and the clamping member 103 of the first clamping arm 104 and the clamping member 103 of the second clamping arm 109 are away from each other, so that the container cover 133 pulled off from the sample container 132 cannot be clamped and fixed by the first clamping arm 104 and the second clamping arm 109, thereby detaching from the clamping member 103. The second position is between the first position and the third position. It should be noted that "the second position is between the first position and the third position" is not defined by the relative positions of the first position, the second position and the third position, but by the movement trajectory of the clamping member 103. In other words, the second position is between the first position and the third position, so that the clamping member 103 passes through the second position when moving from the first position to the third position, and passes through the second position when moving from the third position to the first position. In this embodiment, in terms of orientation, the second position is also located between the first position and the third position. Specifically, the second position is located above the first position, and the third position is located above the second position.

[0105] See also Figure 1-Figure 2 ,as well as Figure 6-Figure 8, the first driving member 111 is connected to the bracket 101 and the clamping member 103, and the first driving member 111 drives the clamping member 103 to move at least between the first position and the second position and between the second position and the third position relative to the bracket 101. In other words, the first driving member 111 can drive the clamping member 103 in the first position to the second position, and drive the clamping member 103 in the second position to the third position, and the first driving member 111 can also drive the clamping member 103 in the third position to the second position, and drive the clamping member 103 in the second position to the first position. In addition to being able to drive the clamping member 103 to move between the first position, the second position and the third position for position switching, in other embodiments, the clamping member 103 can also drive the clamping member 103 to move to other positions, which will not be repeated here.

[0106] See also Figure 2 , Figure 4 as well as Figure 6-Figure 8, the first abutment 114 is connected to the bracket 101. Specifically, the first abutment 114 can be movably connected to the bracket 101 or fixedly connected to the bracket 101. In this embodiment, the first abutment 114 is fixedly connected to the bracket 101. When the clamping member 103 is in the first position, it is away from the first abutment 114 (that is, the clamping member 103 and the first abutment 114 are spaced from each other). In the process of the clamping member 103 moving from the first position to the second position and from the second position to the third position, the clamping member 103 gradually approaches the first abutment 114 from being away from the first abutment 114 until at least one of the first clamping arm 104 and the second clamping arm 109 abuts against the first abutment 114. The abutment action causes the first clamping arm 104 and the second clamping arm 109 to move relative to each other, so that the clamping member 103 is in an open state in the third position. Specifically, during the process of the clamping member 103 moving from the first position to the second position, the clamping member 103 moves relative to the bracket 101 from a position farther from the first abutment member 114 to a position closer to the first abutment member 114 (i.e., the clamping member 103 gradually approaches the first abutment member 114); at a certain moment during the process of the clamping member 103 moving from the second position to the third position, the clamping member 103 abuts against the first abutment member 114 (at least one of the first clamping arm 104 and the second clamping arm 109 abuts against the first abutment member 114), and when the clamping member 103 continues to move toward the third position after abutting against the first abutment member 114, the first abutment member 114 blocks the movement position of at least one of the first clamping arm 104 and the second clamping arm 109. The arrangement enables at least one of the first clamping arm 104 and the second clamping arm 109 to give a thrust to the first abutment 114 (the thrust is originally provided by the first driving member 111). After the first abutment 114 is acted upon by the thrust from at least one of the first clamping arm 104 and the second clamping arm 109, a counter-thrust is generated on at least one of the first clamping arm 104 and the second clamping arm 109. The counter-thrust can promote relative movement between at least one of the first clamping arm 104 and the second clamping arm 109 and the first abutment 114, thereby causing relative movement between the first clamping arm 104 and the second clamping arm 109, and finally causing the clamping member 103 to move to the third position and then be in an open state.

[0107] During the movement of the clamping member 103 from the second position to the third position, at least one of the first clamping arm 104 and the second clamping arm 109 abuts against the first abutment member 114. Specifically, in some embodiments, the first clamping arm 104 abuts against the first abutment member 114, and the second clamping arm 109 does not abut against the first abutment member 114; in some embodiments, the first clamping arm 104 does not abut against the first abutment member 114, and the second clamping arm 109 abuts against the first abutment member 114; in some embodiments, both the first clamping arm 104 and the second clamping arm 109 abut against the first abutment member 114. For ease of description, the following is an example in which the first clamping arm 104 abuts against the first abutment member 114, and the second clamping arm 109 does not abut against the first abutment member 114 during the movement of the clamping member 103 from the second position to the third position.

[0108] The following is a cover opening process of the cover opening mechanism 100 in one embodiment:

[0109] In the initial state, the clamping member 103 is located at the first position, at which time the clamping member 103 is in a clamping state, and the first clamping arm 104 and the second clamping arm 109 jointly clamp the container cover 133 connected to the sample container 132, and the container cover 133 is completely covered at the port position of the sample container 132. The first driving member 111 starts to drive the clamping member 103 to move upward to the second position, and in the process of the first driving member 111 driving the clamping member 103 to move from the first position to the second position, the container cover 133 connected to the sample container 132 is gradually pulled away from the sample container 132 by the clamping member 103, and after the clamping member 103 is driven to the second position by the first driving member 111, the clamping member 103 maintains the clamping state of clamping the container cover 133, and the container cover 133 is separated from the sample container 132. The first driving member 111 continues to drive the clamping member 103 to move upward to the third position, and in the process of the clamping member 103 moving from the second position to the third position, the first clamping arm 104 can move to the position of abutting the first abutting member 114 (the first clamping arm 104 can just abut the first abutting member 114 at the second position, or abut the first abutting member 114 at a certain position in the process of moving to the third position). When the first driving member 111 continues to drive the clamping member 103 to move toward the third position, the first abutting member 114 can passively push the first clamping arm 104 to move, so that the clamping member 103 gradually moves from the clamping state to the open state. After the clamping member 103 is driven to the third position by the first driving member 111, the clamping member 103 is in the open state, so that the container cover 133 clamped by the clamping member 103 is released, and the container cover 133 naturally falls due to the action of gravity, thereby realizing the cap throwing action.

[0110] In this embodiment, the first driving member 111 drives the clamping member 103 to move from the first position to the second position to realize the cover pulling action, so that the container cover 133 is pulled away from the sample container 132 by the clamping member 103. The first driving member 111 drives the clamping member 103 to move from the second position to the third position to realize the cover throwing action, so that the pulled container cover 133 is separated from the clamping member 103. In addition, the cover throwing action and the cover pulling action of the cover opening mechanism 100 are both provided with driving force by the first driving member 111. Compared with the existing structure that uses one driving member to drive the cover opening action and another driving member to drive the cover throwing action, one driving component is reduced, which can not only reduce the material cost of the cover opening mechanism 100, but also reduce the difficulty of assembly, and at the same time, it can also improve the overall structural compactness of the cover opening mechanism 100.

[0111] The first position, the second position and the third position of the clamping member 103 are all based on the bracket 101 as a reference. The specific arrangement positions of the first position, the second position and the third position of the clamping member 103 depend on actual needs. It is only necessary that the clamping member 103 can be suitable for clamping the container cover 133 connected to the sample container 132 when it is in the first position, can clamp the container cover 133 pulled out of the sample container 132 when it is in the second position, and can release the container cover 133 pulled out of the sample container 132 when it is in the third position. Figure 1-Figure 4 In some embodiments, the first position is below the second position, and the second position is below the third position. The first driving member 111 drives the clamping member 103 to move between the first position and the second position and between the second position and the third position along a vertical straight line (which may be a vertical straight line perpendicular to the horizontal plane, or a vertically extending straight line not perpendicular to the horizontal plane). In this solution, the driving process of the clamping member 103 is simpler, and it is more conducive to extracting the container cover 133 on the vertically arranged sample container 132. In this embodiment, the first position is located directly below the second position, and the second position is located directly below the third position, that is, the movement path of the clamping member 103 is a vertically (perpendicular to the horizontal plane) arranged straight line. In other embodiments, the movement path of the clamping member 103 may be an inclined vertically arranged straight line, curve or broken line.

[0112] When the clamping member 103 is driven from the second position to the third position, the abutment position of the first abutment member 114 with respect to the clamping member 103 depends on actual needs. In some embodiments, the first abutment member 114 just starts to abut the first clamping arm 104 when the clamping member 103 is in the second position. In other embodiments, the first abutment member 114 abuts the first clamping arm 104 after the clamping member 103 rises a certain distance from the second position. In this scheme, the first abutment member 114 is configured to be spaced apart from the first clamping arm 104 when the clamping member 103 is in the first position and the second position, so that the first clamping arm 104 and the second clamping arm 109 can stably clamp the container cover 133 when the clamping member 103 is pulled away from the sample container 132, thereby improving the success rate of separating the sample container 132 from the container cover 133.

[0113] See also Figure 1-Figure 2 ,as well as Figure 6-Figure 7 In some embodiments, the clamping member 103 includes a base 110, the first clamping arm 104 and the second clamping arm 109 are both connected to the base 110, and at least one of the first clamping arm 104 and the second clamping arm 109 is hinged to the base 110. In this embodiment, the first clamping arm 104 and the second clamping arm 109 are both hinged to the base 110. During the movement of the clamping member 103 from the second position to the third position, at least one of the first clamping arm 104 and the second clamping arm 109 abuts against the first abutting member 114, so that the clamping arm abutting against the first abutting member 114 rotates relative to the base 110, so that the clamping member 103 is in an open state. Compared with the structure in which the first abutting member 114 abuts against the first clamping arm 104 and / or the second clamping arm 109 to slide in a straight line relative to the base 110, in this embodiment, the first abutting member 114 abuts against the first clamping arm 104 and / or the second clamping arm 109 and causes the first clamping arm 104 and / or the second clamping arm 109 to rotate relative to the base 110, which is more convenient for releasing the container cover 133 on the one hand, and on the other hand, due to the lever effect, the first abutting member 114 has a higher pushing efficiency for the first clamping arm 104, which is more convenient for placing the clamping member 103 in an open state. In other embodiments, the first abutting member 114 can also be configured to push the first clamping arm 104 to move. For example, the first abutting member 114 can be arranged above the first clamping arm 104, and the first abutting member 114 is provided with an inclined surface, which is arranged obliquely from bottom to top in the direction from the second clamping arm 109 to the first clamping arm 104. When the first clamping arm 104 is driven to move upward, the upper end of the first clamping arm 104 abuts against the inclined surface and is pushed by the inclined surface to slide in a direction away from the second clamping arm 109 , thereby placing the clamping member 103 in an open state.

[0114] See also Figure 2 , Figure 4 , Figure 6 as well as Figure 7 In some embodiments, the first clamping arm 104 may include a first arm 105 and a second arm 106 connected to each other, the first arm 105 is used to clamp the container cover 133, the second arm 106 is hinged to the base 110, and the second arm 106 abuts against the first abutment 114 during the movement of the clamping member 103 from the second position to the third position. In other words, in this embodiment, the first abutment 114 abuts against the second arm 106 of the first clamping arm 104 that does not clamp the container cover 133, thereby pushing the first clamping arm 104 to rotate. On the one hand, the arrangement position of the first abutment 114 is more flexible, and it is not easy to cause position interference with the container cover 133. On the other hand, due to the principle of lever, the pushing efficiency of the first abutment 114 is higher, and the clamping member 103 is more easily converted from the clamping state to the open state. Of course, in other embodiments, the first abutment 114 can also abut and push the first arm 105 to drive the first clamping arm 104 to move, which will not be repeated here.

[0115] When the first clamping arm 104 is hinged to the base 110, the specific structural arrangement of the first clamping arm 104 and the specific matching relationship between the first clamping arm 104 and the first abutting member 114 depend on actual needs. Figure 2 , Figure 4 , Figure 6 as well as Figure 7In some embodiments, when the clamping member 103 is in the clamping state, the first arm 105 is extended in the vertical direction, the second arm 106 includes a first section 107 extending in the horizontal direction and a second section 108 extending in the vertical direction, the upper end of the first arm 105 is connected to the second section 108, the first section 107 is hinged to the base 110, and the first abutment member 114 is arranged above the first section 107 and in the process of the clamping member 103 moving from the second position to the third position, the first section 107 abuts against the first abutment member 114. Specifically, after the first abutment member 114 abuts against the first section 107, it can slide along the upper wall surface of the first section 107, thereby pushing the first arm 105 of the first clamping arm 104 to move in a direction away from the second clamping arm 109, so that the clamping member 103 is in the open state after moving to the third position. In this solution, the structural design of the first clamping arm 104 is simpler, easier to process and manufacture, and lower in cost. In the above-mentioned embodiment, during the movement of the clamping member 103 from the second position to the third position, the first abutting member 114 slides along the side wall of the first clamping arm 104. In other embodiments, during the movement of the clamping member 103 from the second position to the third position, the first clamping arm 104 can slide along the side wall of the first abutting member 114. Specifically, the first abutting member 114 is arranged at the upper end of the first clamping arm 104, and the first abutting arm has an inclined surface facing the upper end of the first clamping arm 104, and from bottom to top, the inclined surface is arranged in an inclined direction from the first clamping arm 104 to the second clamping arm 109. When the first clamping arm 104 moves upward, its upper end abuts against the above-mentioned inclined surface, and in the process of continuing to move upward, the part driven to the lower end for clamping the container cover 133 moves in a direction away from the second clamping arm 109, and the upper end moves in a direction close to the second clamping arm 109, so that the clamping member 103 is in an open state after moving to the second position. In this solution, the first clamping arm 104 slides along the wall surface of the first abutment member 114 .

[0116] In some embodiments, the first arm 105 and the second arm 106 can be connected by assembly (non-integrated connection), specifically, the two can be threaded or welded. Further, the first arm 105 can be formed by bending a sheet metal part. This solution is more conducive to the processing and manufacturing of the first clamping arm 104. In other embodiments, the first arm 105 and the second arm 106 can also be connected by integral molding, which will not be described here.

[0117] See also Figure 2 , Figure 4 , Figure 6 as well as Figure 7In some embodiments, the first abutment member 114 includes a first roller 115. When the clamping member 103 moves from the second position to the third position, at least one of the first clamping arm 104 and the second clamping arm 109 abuts against the first roller 115 and rolls relative to the first roller 115. In this solution, the friction force when the first abutment member 114 and the first clamping arm 104 move relative to each other is smaller. On the one hand, it can reduce resistance and reduce the burden on the first driving member 111. On the other hand, it can also reduce the wear between the first abutment member 114 and the first clamping arm 104, thereby increasing the service life of both the first abutment member 114 and the first clamping arm 104.

[0118] To recycle the released container cap 133, see Figure 1-Figure 4 In some embodiments, the cover opening mechanism 100 further includes a first recovery member 134 and a guide member 116. The guide member 116 includes a transmission part 118 and a guide part 117. The transmission part 118 is driven by the driving component to drive the transmission part 118 to move, and the movement of the transmission part 118 drives the guide part 117 to the avoidance position (see Figure 2 ) and guide position (see Figure 4 ). When the guide portion 117 is in the avoidance position, the guide portion 117 is outside the movement path of the clamping member 103 from the first position to the second position (that is, the clamping member 103 will not touch the guide portion 117 located in the avoidance position when moving from the first position to the second position); when the guide portion 117 is in the guiding position, the guide portion 117 is located below the clamping member 103 to guide the container cover 133 released by the clamping member 103 to the first recovery member 134. Specifically, when the clamping member 103 is in the third position, the guide portion 117 is in the guiding position, and when the clamping member 103 is between the first position and the second position, the guide portion 117 is in the avoidance position. Specifically, see Figure 3-Figure 4 , the first recovery member 134 can define a first recovery chamber 135, and when the guide member 116 is located at the guide position, the opening of the first recovery chamber 135 faces the guide portion 117, so that the guide portion 117 guides the container cover 133 released by the clamp 103 to the first recovery chamber 135. In this solution, compared with the structure of driving the clamp 103 to release the container cover 133 at different positions, the clamp 103 can achieve the operation of pulling out the cover and recovering the cover by moving vertically, and the movement mode of the clamp 103 is simpler and easier to process and manufacture. In other embodiments, the clamp 103 can be pulled away from the container cover 133 at the first position, and release the container cover 133 at a second position located laterally beside the first position, and a recovery component is set below the second position to obtain the container cover 133 released by the clamp 103.

[0119] The driving mode of the guide member 116 depends on actual needs, see Figure 1-Figure 4 , Figure 6-Figure 7 In some embodiments, the transmission part 118 is in transmission connection with the first driving member 111 and is driven by the first driving member 111. The transmission part 118 and the driving member may be connected at all times, or they may be connected when the transmission part 118 needs to be driven, and they may be separated from each other when the transmission part 118 does not need to be driven. It should be noted that in this embodiment, when the power source driving the transmission part 118 to move is defined as the first driving member 111, the transmission part 118 is said to be in transmission connection with the first driving member 111.

[0120] See also Figure 1-Figure 4 , Figure 6-Figure 7 In this embodiment, the cover opening mechanism 100 includes a second abutting member 122, which is connected to the clamping member 103. The second abutting member 122 is configured to abut against the transmission part 118 and generate relative movement with the transmission part 118 during the process of the clamping member 103 being driven from the second position to the third position, so that the transmission part 118 drives the guide part 117 to move from the avoidance position to the guide position. Specifically, during the upward movement of the clamping member 103, the second abutting member 122 moves upward with the clamping member 103 and can move to abut against the transmission part 118. During the upward movement, the second abutting member 122 continues to be driven by the first driving member 111 and can generate relative movement with the transmission part 118. After the clamping member 103 moves to the third position, the transmission part 118 drives the guide part 117 to move from the avoidance position to the guide position (the driving force of the second abutting member 122 is provided by the first driving member 111). In the above scheme, one power component (i.e., the first driving component 111) can drive the lid opening action, the lid throwing action, and the recovery action. Compared with setting up other power components to complete the recovery action, the number of power components is less, the material cost is lower, and the processing and assembly are simpler. In other embodiments, the driving force of the transmission part 118 can come from other power components other than the first driving component 111, that is, the lid opening mechanism 100 can also include an additional power component, which is dedicated to driving the guide part 117 to move between the avoidance position and the guide position.

[0121] The guide member 116 can be connected to the bracket 101 in a rotatable or sliding manner. Figure 1-Figure 4In some embodiments, the guide member 116 is rotatably connected to the bracket 101. Specifically, the transmission part 118 is hinged to the bracket 101, and the second abutment member 122 is configured to abut the transmission part 118 during the process of the clamping member 103 being driven from the second position to the third position, so that the transmission part 118 drives the guide part 117 to rotate from the avoidance position to the guiding position. Compared with the structure in which the guide member 116 is slidably connected to the bracket 101, and the guide part 117 is configured to slide along a straight line relative to the bracket 101, the driving efficiency of the rotation action is higher, and it is more convenient to drive the guide part 117 from the avoidance position to the guiding position.

[0122] See also Figure 1-Figure 4 In some embodiments, along the transverse direction ( Figure 1 The second abutment 122 is located between the guide member 116 and the clamping member 103, specifically, the second abutment 122 is located between the second clamping arm 109 and the guide member 116, and the second abutment 122 is located on the side of the second clamping arm 109 away from the first clamping arm 104, and the guide portion 117 is arranged on the side of the second abutment 122 away from the second clamping arm 109. When the guide portion 117 is in the avoidance position, the guide portion 117 is arranged vertically, the transmission portion 118 is located above the guide portion 117 and is arranged obliquely from bottom to top toward the direction close to the second abutment portion, or the surface of the transmission portion 118 abutting against the second abutment 122 is arranged obliquely from bottom to top toward the direction of the second abutment portion. In this solution, the driving efficiency of the second abutment 122 abutting against the transmission portion 118 is higher, and the structural setting and position setting of the guide member 116 are simpler.

[0123] See also Figure 1-Figure 4 ,as well as Figure 6-Figure 7 In some embodiments, the second abutting member 122 includes a second roller 123, and the second roller 123 is used to abut the transmission part 118 and roll relative to the transmission part 118. The structural setting of the second roller 123 makes the friction between the second abutting member 122 and the transmission part 118 smaller, thereby alleviating the burden of the first driving member 111, and reducing the wear between the transmission part 118 and the second abutting member 122, thereby improving the service life of both.

[0124] The following is a specific working process of the cover opening mechanism 100 in one embodiment:

[0125] In the initial state, the clamping member 103 is located at the first position, at which time the clamping member 103 is in a clamping state, the first clamping arm 104 and the second clamping arm 109 jointly clamp the container cover 133 connected to the sample container 132, and the guide portion 117 is in an avoidance position. The first driving member 111 starts to drive the clamping member 103, and in the process of the first driving member 111 driving the clamping member 103 to move from the first position to the second position, the container cover 133 connected to the sample container 132 is pulled away from the sample container 132. In the process of the first driving part driving the clamping member 103 to move from the second position to the third position, the first clamping arm 104 can move to the position of abutting the first abutment member 114 (the first clamping arm 104 can abut the first abutment member 114 at the second position, or abut the first abutment member 114 at a position in the process of moving from the second position to the third position); and in this process, the second abutment member 122 can move with the clamping member 103 to abut the guide member 116 (specifically abut the transmission part 118 of the guide member 116). When the first driving member 111 continues to drive the clamping member 103 to move toward the third position, the first abutment member 114 can push the first clamping arm 104 to move, so that the clamping member 103 gradually moves from the clamping state to the open state. After the clamping member 103 is driven to the third position by the first driving member 111, the clamping member 103 is in the open state, so that the container cover 133 clamped by the clamping member 103 is released, and the container cover 133 naturally falls due to gravity. Furthermore, during the process of the first driving member 111 driving the clamping member 103 to move from the second position to the third position, the second abutting member 122 can push the transmission part 118 to rotate relative to the bracket 101, thereby driving the guide part 117 to move from the avoidance position to the guide position, so that when the clamping member 103 is in the third position, the guide part 117 of the guide member 116 is located below the clamping member 103 (the moment when the guide part 117 moves to the guide position may occur before the moment when the clamping member 103 is in the open state), so that the container cover 133 released by the clamping member 103 is caught by the guide part 117 during the falling process, and then slides down along the guide part 117 and falls into the first recovery member 134. After the container cover 133 falls and is recovered, the first driving member 111 drives the clamping member 103 to move downward to the second position, and the guide part 117 returns to the avoidance position.

[0126] During the movement of the clamping member 103 from the clamping state to the open state, the first clamping arm 104 is provided with a driving force by the first driving member 111 so as to move. During the movement of the clamping member 103 from the open state to the clamping state, in one embodiment, the first clamping arm 104 can provide a driving force by its own gravity (at this time, when the first clamping arm 104 is only subject to gravity and the support force of the base 110, the first clamping arm 104 can clamp the container cover 133 together with the second clamping arm 109). In another embodiment, the first clamping arm 104 can provide a driving force by a reset spring (the specific structure of the reset spring is described below). In the process of the guide portion 117 moving from the avoidance position to the guide position, the driving force is provided by the first driving member 111. In the process of the guide portion 117 returning from the guide position to the avoidance position, in one embodiment, the driving force can be provided by the gravity of the guide portion 117 itself (at this time, when the guide portion 117 is only affected by gravity and the support force of the bracket 101, the guide portion 117 is in the avoidance position). In another embodiment, the driving force can be provided by a reset spring, that is, a reset spring is connected between the guide portion 117 and the bracket 101, and the reset spring provides an elastic force to pull the guide portion 117 to the avoidance position.

[0127] The specific guiding direction of the guiding portion 117 depends on actual needs, see Figure 1-Figure 4 ,as well as Figure 6-Figure 7In some embodiments, the second abutment member 122 is disposed on the side of the second clamping arm 109 away from the first clamping arm 104, and the guide portion 117 is disposed on the side of the second abutment member 122 away from the second clamping arm 109. The guide portion 117 includes a guide surface 119 for guiding the container cover 133. When the guide portion 117 is in the guiding position, the guide surface 119 is disposed below the clamping member 103. From top to bottom, the guide surface 119 is arranged obliquely in the direction from the second clamping arm 109 to the first clamping arm 104. In this solution, the guide portion 117 can guide the falling container cover 133 obliquely downward in the direction from the second clamping arm 109 to the first clamping arm 104. At this time, the first recovery member 134 can be disposed below the side of the first clamping arm 104 away from the second clamping arm 109, so as to obtain the container cover 133 guided by the guide portion 117. In other embodiments, the second abutment 122 is disposed on the side of the second clamping arm 109 away from the first clamping arm 104, and the guide portion 117 is disposed on the side of the second abutment 122 away from the second clamping arm 109. The guide portion 117 includes a guide surface 119 for guiding the container cover 133. When the guide portion 117 is in the guiding position, the guide surface 119 is disposed below the clamping member 103, and the guide surface 119 is arranged obliquely from top to bottom in the direction from the first clamping arm 104 to the second clamping arm 109. In this solution, the guide portion 117 can guide the falling container cover 133 obliquely downward in the direction from the first clamping arm 104 to the second clamping arm 109. At this time, the first recovery member 134 can be disposed below the side of the second clamping arm 109 away from the first clamping arm 104, so as to obtain the container cover 133 guided by the guide portion 117.

[0128] In other embodiments, the second abutment member 122 can also be arranged on the side of the first clamping arm 104 away from the second clamping arm 109, and the guide portion 117 is arranged on the side of the second abutment member 122 away from the first clamping arm 104. At this time, the first recovery member 134 can be adaptively arranged in position, which is not repeated here.

[0129] The applicant has found that when the container cover 133 is pulled away from the sample container 132 by the clamping member 103, residual liquid may adhere to the inner wall of the container cover 133, and the dripping of the residual liquid may contaminate the sample in the sample container 132. Therefore, the residual liquid needs to be recovered. Figure 2-Figure 4In some embodiments, the guide portion 117 is provided with a concave cavity 120, and the concave cavity 120 is configured to open below the container cover 133 clamped by the clamping member 103 when the guide portion 117 is in the guiding position. When the guide portion 117 is in the guiding position, the residual liquid attached to the container cover 133 clamped by the clamping member 103 can drip into the concave cavity 120 and be collected by the concave cavity 120, thereby preventing the residual liquid from continuing to fall and contaminating the sample in the sample container 132. In order to make the guide portion 117 have the function of collecting residual liquid and guiding the container cover 133, in some embodiments, the opening width of the concave cavity 120 is smaller than the diameter or height of the container cover 133. Specifically, the width of the opening of the concave cavity 120 in at least one direction is smaller than the diameter or height of the container cover 133, that is, it is considered that the opening width of the concave cavity 120 is smaller than the diameter or height of the container cover 133. This solution prevents the container cover 133 from entering the concave cavity 120 during the falling process. In order to further prevent the container cover 133 from getting stuck in the cavity 120, in some embodiments, two convex ribs 121 may be provided at the opening of the cavity 120, and the distance between the two convex ribs 121 is smaller than the diameter or height of the container cover 133. When the guide portion 117 is in the guide position, the two convex ribs 121 are arranged horizontally on opposite sides of the opening of the cavity 120, and a portion of the lower end of the second clamping arm 109 extends into the cavity 120 and is located between the two convex ribs 121, so that the container cover 133 is guided by the upper ends of the two convex ribs 121 during the falling process, thereby preventing the container cover 133 from getting stuck in the cavity 120, thereby improving the success rate of sample recovery. In addition, the arrangement of the cavity 120 can also avoid the clamping member 103, which effectively avoids the position interference between the guide portion 117 and the clamping member 103.

[0130] In the aforementioned embodiment, the guide portion 117 guides the container cover 133 to the first recovery member 134 for recovery. In other embodiments, the guide portion 117 can also directly recover the container cover 133. Specifically, in some embodiments, the cover opening mechanism 100 also includes a second recovery member (not shown in the figure), the second recovery member has an avoidance position and a guide position, the second recovery member includes a recovery section, the recovery section defines a second recovery chamber, when the second recovery member is in the avoidance position, the recovery section is located outside the movement path of the clamping member 103 from the first position to the second position, when the second recovery member is in the guide position and the clamping member 103 is in the third position, the recovery section is located below the clamping member 103, so as to obtain the container cover 133 released from the clamping member 103. In this solution, the second recovery member directly recovers the container cover 133, and the container cover 133 in the second recovery member can be cleaned up manually later, or the container cover 133 stored in the second recovery member can be cleaned up by other transmission methods. In other words, this embodiment is equivalent to removing the first recovery member 134 in the aforementioned embodiment, and setting a second recovery chamber on the guide portion 117 in the aforementioned embodiment, so that the container cover 133 is directly collected in the second recovery chamber. At this time, the guide portion 117 is not used for guiding, but for recovering the container cover 133.

[0131] In some embodiments, the cover opening mechanism 100 further includes a transfer part (not shown in the figure), the transfer part has an avoidance position and a guide position, the transfer part includes a transfer section, the transfer section defines a transfer cavity, when the transfer part is in the avoidance position, the transfer section is located outside the movement path of the clamping member 103 from the first position to the second position, when the transfer part is in the guide position and the clamping member 103 is in the third position, the transfer section is located below the clamping member 103, so as to obtain the container cover 133 released from the clamping member 103. The cover opening mechanism 100 further includes a third recovery member (not shown in the figure), the third recovery member defines a third recovery cavity, when the transfer part is in the avoidance position, the opening of the third recovery cavity faces the transfer section, and the container cover 133 in the transfer cavity falls into the third recovery cavity. In this embodiment, the transfer part neither directly guides the container cover 133 to the third recovery member, nor directly recovers the container cover 133. After the transfer part obtains the container cover 133 at the guide position, it releases the container cover 133 at the avoidance position and allows the container cover 133 to fall into the third recovery part.

[0132] See also Figure 1-Figure 2 , Figure 5 as well as Figure 8-Figure 9In some embodiments, the first position is located below the second position, and the first driving member 111 is configured to drive the clamping member 103 to move between the first position and the second position along a straight line. The cover opening mechanism 100 also includes a first slider 124, a second slider 125, a sensor 127, a first stopper 126, and a controller. The first slider 124 is slidably connected to the bracket 101, and the first driving member 111 is configured to drive the first slider 124 to slide vertically. The second slider 125 is slidably connected to the bracket 101 and can slide vertically. The second slider 125 is located above the first slider 124. The second slider 125 is connected to the clamping member 103. When the first driving member 111 drives the first slider 124 to move upward, the first slider 124 abuts against the second slider 125 to drive the clamping member 103 to move upward to the third position. When the first driving member 111 stops driving, the clamping member 103 slides to the first position under the action of gravity along with the second slider 125. The sensor 127 is configured to generate a control signal when detecting that the first slider 124 is separated from the second slider 125. The first stopper 126 is movably connected to the clamping member 103 and is located between the first clamping arm 104 and the second clamping arm 109. The first stopper 126 slides relative to the bracket 101 along with the second slider 125. The clamping member 103 also has a pre-clamping state before clamping the container cover 133. The clamping member 103 also has a fourth position in the pre-clamping state and the container cover 133 is on the sample container 132. The fourth position is located between the first position and the second position, that is, the clamping member 103 passes through the fourth position during the movement from the first position to the second position, and passes through the fourth position during the movement from the second position to the first position. When the clamping member 103 moves downward to the fourth position, the first stopper 126 abuts between the second slider 125 and the container cover 133 of the sample container 132, so that when the first stopper 126 moves downward to the first position, under the abutment of the first stopper 126, the second slider 125 moves upward relative to the first slider 124, so that the first slider 124 is separated from the second slider 125. The controller is configured to control the first drive member 111 to drive the first slider 124 to slide upward after obtaining a control signal during the process of controlling the first drive member 111 to drive the first slider 124 to slide downward, so as to drive the clamping member 103 to move from the first position to the second position and then to the third position.

[0133] In the above embodiment, when the first driving member 111 drives the clamping member 103 to slide down from the second position to the first position, the first driving member 111 drives the first slider 124 to slide down, and the second slider 125 is supported by the first slider 124. When the first slider 124 slides down, the second slider 125 slides down along with the first slider 124 due to its own gravity and the gravity of the clamping member 103. After the clamping member 103 slides down to the upper end where the first stopper 126 abuts against the container cover 133, the clamping member 103 is in the fourth position, and the clamping member 103 is in a pre-clamping state. When the first slider 124 continues to slide down, the first stopper 126 is movably connected between the first clamping arm 104 and the second clamping arm 109, so that the second slider 125 can continue to slide down due to gravity. At this time, the first stopper 126 and the second slider 125 move relative to each other (elastic elements can be connected between the two, so that the two can move relative to each other within a certain range). When the first stopper 126 and the second slider 125 move relative to each other until they are in hard contact with each other, the container cover 133 can support the clamping member 103 and the second slider 125, so that the second slider 125 and the clamping member 103 cannot continue to slide down. At this time, the clamping member 103 is in the first position. When the first driving member 111 continues to drive the first slider 124 to slide down, the first slider 124 and the second slider 125 are separated. When the sensor 127 detects the separation between the first slider 124 and the second slider 125, a control signal is generated, and the controller obtains the control signal or controls the first driving member 111 to drive the first slider 124 to slide upward, so as to drive the clamping member 103 to move from the first position to the fourth position, from the fourth position to the second position, and then from the second position to the third position. In this solution, the opening action of the clamping member 103 can be fully automatically controlled without manual control of the opening action, thereby improving the opening efficiency.

[0134] In the above embodiment, an elastic element is connected between the first limiter 126 and the second slider 125, so that relative displacement can occur between the first limiter 126 and the second slider 125. In another embodiment, the first limiter 126 can also be hard-connected with the second slider 125, so that when the first limiter 126 abuts against the container cover 133, the clamping member 103 is in the first position, and the second slider 125 cannot continue to slide down due to gravity.

[0135] In some embodiments, the first driving member 111 may include a driving motor 112 and a driving belt 113, and the starting motor drives the driving belt 113 to perform circular rotation or circular reciprocating motion. The driving belt 113 is connected to the first slider 124, the bracket 101 is provided with a slide rail 102, and the first slider 124 and the second slider 125 are both slidably connected to the slide rail 102 of the bracket 101 (in other embodiments, the first slider 124 and the second slider 125 can also be connected to different slide rails 102 respectively). In the above scheme, when the driving motor 112 rotates in one direction, it can drive the first slider 124 to slide up, and when the driving motor 112 rotates in the opposite direction, it can drive the first slider 124 to slide down.

[0136] In some embodiments, the sensor 127 is a pressure sensor 127, which is used to detect the pressure between the first slider 124 and the second slider 125, and generates a control signal when the pressure value between the first slider 124 and the second slider 125 is zero. In some embodiments, the sensor 127 is a distance sensor 127, which is used to detect the distance between the first slider 124 and the second slider 125, and generates a control signal when the minimum distance between the first slider 124 and the second slider 125 is greater than zero. In some embodiments, the sensor 127 is a current sensor 127, which is used to detect the current between the first slider 124 and the second slider 125, and generates a control signal when the current between the first slider 124 and the second slider 125 is disconnected. Figure 8-Figure 9 In this embodiment, the sensor 127 is an optical coupling sensor 127, and generates a control signal when the separation between the first slider 124 and the second slider 125 is detected. Specifically, the sensor 127 includes an optical coupling device 128 and a light shielding plate 129, the optical coupling device 128 is connected to the second slider 125 (indirectly connected to the second slider 125, and moves with the movement of the second slider 125), and the light shielding plate 129 is connected to the first slider 124 (indirectly connected to the first slider 124, and moves with the movement of the first slider 124). When the first slider 124 supports the second slider 125, the light shielding plate 129 shields the optical coupling device 128. When the first slider 124 is separated from the second slider 125, the light shielding plate 129 is separated from the optical coupling device 128, and the light shielding plate 129 does not shield the light, so that the optical coupling device 128 can generate a control signal. In other embodiments, the specific structure and sensing method of the optical coupling sensor 127 can also be set separately, which is not repeated here.

[0137] See also Figure 1-Figure 4In some embodiments, the first stopper 126 is disposed between the first clamping arm 104 and the second clamping arm 109, and the clamping member 103 further includes an elastic member, and an elastic member is connected between at least one of the first clamping arm 104 and the second clamping arm 109 and the base 110. Specifically, the elastic member includes a first elastic member 130 and a second elastic member 131, one end of the first elastic member 130 is connected to the first clamping arm 104, and the other end is connected to the first stopper 126, and the first elastic member 130 is used to pull the first clamping arm 104 to clamp the container cover 133. In this solution, the first elastic member 130 can reset the first clamping member 103 to the position of clamping the container cover 133, so as to facilitate the clamping member 103 to reset to the clamping state, and the first elastic member 130 is connected to the first stopper 126, so that the first elastic member 130 is more convenient to generate a pulling force in a suitable direction on the first clamping arm 104. One end of the second elastic member 131 is connected to the second clamping arm 109, and the other end is connected to the first stopper 126. The second elastic member 131 is used to pull the second clamping arm 109 to clamp the container cover 133. In this solution, the second elastic member 131 can reset the second clamping member 103 to the position of clamping the container cover 133, which is convenient for the clamping member 103 to reset to the clamping state. In addition, the second elastic member 131 is connected to the first stopper 126, so that the second elastic member 131 is more convenient to generate a pulling force in a suitable direction on the second clamping arm 109.

[0138] In the above embodiment, an elastic member is used to keep the first clamping arm 104 and the second clamping arm 109 in a clamping state. In other embodiments, the elastic member may not be provided, and the first clamping arm 104 and the second clamping arm 109 may be kept in a clamping state only by designing the center of gravity of the first clamping arm 104 and the second clamping arm 109. Specifically, in some embodiments, the first clamping arm 104 is hinged to the bracket 101, the center of gravity of the first clamping arm 104 is located below the rotation center of the first clamping arm 104, and the line connecting the center of gravity of the first clamping arm 104 and the rotation center of the first clamping arm 104 is an oblique line extending from top to bottom and toward the second clamping arm 109. That is to say, when the first clamping arm 104 is only subjected to gravity and the support force of the hinged position, its lower end deviates in the direction close to the second clamping arm 109, so that the first clamping arm 104 can clamp the container cover 133 by gravity. In some embodiments, the second clamping arm 109 is hinged to the bracket 101, the center of gravity of the second clamping arm 109 is located below the rotation center of the second clamping arm 109, and the line connecting the center of gravity of the second clamping arm 109 and the rotation center of the second clamping arm 109 is an oblique line extending from top to bottom in the direction of the first clamping arm 104. That is to say, when the second clamping arm 109 is only supported by gravity and the support force of the hinged position, its lower end deviates in the direction close to the first clamping arm 104, so that the second clamping arm 109 can clamp the container cover 133 by gravity. In this embodiment, see Figure 1-Figure 2The clamping member 103 not only clamps the container cover 133 by designing the center of gravity, but also assists in clamping the container cover 133 by the elasticity generated by the first elastic member 130 and the second elastic member 131, so that a better clamping effect can be achieved without setting an elastic member with a large elastic coefficient, and the clamping is more stable.

[0139] The accommodating mechanism 200 includes a placement position for placing the sample container 132, a second stopper 201 is provided on one side of the placement position, and a third abutment member 202 is provided on the other side. The sample analyzer also includes a second driving member 203 drivingly connected to the third abutment member 202, and the second driving member 203 drives the third abutment member 202 to move in a horizontal direction to clamp the sample container 132 in the placement position between the third abutment member 202 and the second stopper 201. This solution makes the position of the sample container 132 relatively stable when the cover opening mechanism 100 opens the cover of the sample container 132, thereby improving the success rate of opening the cover.

[0140] See also Figure 1-Figure 9The second aspect of the present application also provides a sample analyzer, which includes a accommodating mechanism 200 and a cover opening mechanism 100. The accommodating mechanism 200 is used to accommodate a sample container 132. The cover opening mechanism 100 includes a bracket 101, a clamping member 103, a first driving member 111, a cover removal mechanism, a first recovery member 134, and a first guide member 116. The clamping member 103 is movably connected to the bracket 101. The clamping member 103 has a clamping state of clamping the container cover 133 and an open state of releasing the container cover 133. The clamping member 103 has a first position in which the container cover 133 is in a clamping state and is on the sample container 132, and a second position in which the container cover 133 is in a clamping state and is pulled away from the sample container 132. The clamping member 103 also has a third position in which it is in an open state, and the second position is located between the first position and the third position. The first driving member 111 is connected to the bracket 101, and the first driving member 111 drives the clamping member 103 to move between the first position and the second position and between the second position and the third position relative to the bracket 101. In the process of the clamping member 103 moving from the first position to the second position, the container cover 133 on the sample container 132 in the accommodating mechanism 200 is pulled away from the sample container 132. In the process of the clamping member 103 moving from the second position to the third position, the container cover 133 is separated from the clamping member 103 under the action of the cover removal mechanism. The first recovery member 134 is used to recover the container cover 133 separated from the clamping member 103. The guide member 116 includes a transmission part 118 and a guide part 117. The first driving member 111 is connected to the transmission part 118 in a transmission manner to drive the transmission part 118 to move, and the movement of the transmission part 118 drives the guide part 117 to move between the avoidance position and the guide position. When the guide portion 117 is in the avoidance position, the guide portion 117 is located outside the movement path of the clamping member 103 from the first position to the second position. When the guide portion 117 is in the guiding position, the guide portion 117 is located below the clamping member 103 to guide the container cover 133 of the clamping member 103 to the first recovery member 134. When the clamping member 103 is in the third position, the guide portion 117 is in the guiding position, and when the clamping member 103 is between the first position and the second position, the guide portion 117 is in the avoidance position.

[0141] In the sample analyzer of the present embodiment, the first driving member 111 drives the clamping member 103 to move from the first position to the second position to realize the cover opening action; when the first driving member 111 drives the clamping member 103 to move from the second position to the third position, the first driving member 111 drives the transmission part 118 to move, thereby driving the guide part 117 to move to the guide position to complete the cover throwing action. The power sources of the cover opening action and the recovery action are both the first driving member 111. Compared with the structural setting of using one driving component to realize the cover opening action and another driving component to realize the recovery action, one driving component is reduced and the cost is lower. The cover removal mechanism in the present embodiment is used to separate the container cover 133 from the clamping member 103 during the process of the clamping member 103 moving from the second position to the third position. In some embodiments, the power source of the cover removal mechanism may be other driving components other than the first driving member 111. See. Figure 1-Figure 4 In some embodiments, the power source of the cover removal mechanism may be the first driving member 111. Specifically referring to the above embodiment, the cover removal mechanism may include a first abutting member 114, and the first abutting member 114 cooperates with the clamping member 103 to achieve separation of the container cover 133 from the clamping member 103. In the above scheme, one power component (i.e., the first driving member 111) can drive the cover opening action, the cover throwing action, and the recovery action. Compared with setting up other power components to complete the cover throwing action, the number of power components is less, the material cost is lower, and the processing and assembly are simpler.

[0142] The transmission part 118 is in transmission connection with the first driving member 111 and is driven by the first driving member 111. The transmission part 118 and the driving member can be connected at all times, or they can be connected when the transmission part 118 needs to be driven and separated when the transmission part 118 does not need to be driven. It should be noted that in this embodiment, when the power source driving the transmission part 118 is defined as the first driving member 111, the transmission part 118 is said to be in transmission connection with the first driving member 111. In some embodiments, see Figure 1-Figure 4 , Figure 6-Figure 7The cover opening mechanism 100 includes a second abutment member 122, which is connected to the clamping member 103. The second abutment member 122 is configured to abut against the transmission part 118 and generate relative movement with the transmission part 118 during the process of the clamping member 103 being driven from the second position to the third position, so that the transmission part 118 drives the guide part 117 to move from the avoidance position to the guide position. Specifically, during the upward movement of the clamping member 103, the second abutment member 122 moves upward with the clamping member 103 and can move to abut against the transmission part 118. The second abutment member 122 continues to be driven by the first driving member 111 to move upward and can generate relative movement with the transmission part 118. After the clamping member 103 moves to the third position, the transmission part 118 drives the guide part 117 to move from the avoidance position to the guide position (the driving force of the second abutment member 122 is provided by the first driving member 111).

[0143] See also Figure 1-Figure 4 ,as well as Figure 6-Figure 7 In some embodiments, the second abutment member 122 includes a second roller 123, which is used to abut the transmission part 118 and generate relative rolling with the transmission part 118. The structural setting of the second roller 123 makes the friction between the second abutment member 122 and the transmission part 118 smaller, thereby reducing the burden of the first driving member 111, and reducing the wear between the transmission part 118 and the second abutment member 122, and improving the service life of both. Further, when the guide part 117 is in the avoidance position, the surface of the transmission part 118 abutting against the second roller 123 is tilted from bottom to top in the direction of the second roller 123, or the transmission part 118 is tilted from bottom to top in the direction of the second roller 123. This solution can facilitate the second abutment part to drive the transmission part 118 and drive the transmission part 118 to rotate relative to the bracket 101 during the upward movement of the clamping member 103, thereby driving the guide part 117 to move from the avoidance position to the guide position.

[0144] See also Figure 2-Figure 4In some embodiments, the guide portion 117 is provided with a concave cavity 120, and the concave cavity 120 is configured to open below the container cover 133 clamped by the clamping member 103 when the guide portion 117 is in the guiding position. When the guide portion 117 is in the guiding position, the residual liquid attached to the container cover 133 clamped by the clamping member 103 can drip into the concave cavity 120 and be collected by the concave cavity 120, thereby preventing the residual liquid from continuing to fall and contaminating the sample in the sample container 132. In order to make the guide portion 117 have the function of collecting residual liquid and guiding the container cover 133, in some embodiments, the opening width of the concave cavity 120 is smaller than the diameter or height of the container cover 133. Specifically, the width of the opening of the concave cavity 120 in at least one direction is smaller than the diameter or height of the container cover 133, that is, it is considered that the opening width of the concave cavity 120 is smaller than the diameter or height of the container cover 133. This solution prevents the container cover 133 from entering the concave cavity 120 during the falling process. In order to further prevent the container cover 133 from getting stuck in the cavity 120, in some embodiments, two convex ribs 121 may be provided at the opening of the cavity 120, and the distance between the two convex ribs 121 is smaller than the diameter or height of the container cover 133. When the guide portion 117 is in the guide position, the two convex ribs 121 are arranged horizontally on opposite sides of the opening of the cavity 120, and a portion of the lower end of the second clamping arm 109 extends into the cavity 120 and is located between the two convex ribs 121, so that the container cover 133 is guided by the upper ends of the two convex ribs 121 during the falling process, thereby preventing the container cover 133 from getting stuck in the cavity 120, thereby improving the success rate of sample recovery. In addition, the arrangement of the cavity 120 can also avoid the clamping member 103, which effectively avoids the position interference between the guide portion 117 and the clamping member 103.

[0145] See also Figure 10-13 The third aspect of the present application also provides a sample analyzer, wherein when the sample analyzer processes the sample in the sample container 2111 having the container cover 2112, the sample container 2111 needs to be fixed first, and then the container cover 2112 of the sample container 2111 needs to be removed, and then the sample needs to be sucked and transferred. In the related art, an embracing positioning mechanism can be arranged above the sample container 2111, the sample container 2111 can be clamped in the circumferential direction of the sample container 2111, and then the container cover 2112 of the sample container 2111 can be removed by the cover opening mechanism to realize the automatic cover opening operation. However, on the one hand, the container cover 2112 of the sample container 2111 needs to be opened by pulling up or twisting it to fall off from the top of the sample container 2111, so the cover opening mechanism usually needs to be arranged above the sample container 2111. When the internal space of the sample analyzer is limited, the structural layout is more difficult; on the other hand, the structure of the embracing positioning mechanism is more complicated, resulting in a higher manufacturing cost of the sample analyzer.

[0146] Based on this, some embodiments of the present application provide a sample analyzer including a sample transport mechanism 2200 and a sample pressing mechanism 2300. Figures 10 to 13 The sample transport mechanism 2200 is used to transport the sample component 2100, the sample component 2100 is used to carry a plurality of container components 2110, the container components 2110 include a sample container 2111 for accommodating the sample and a container cover 2112 for sealing the sample container 2111, the sample transport mechanism 2200 is used to transport the plurality of sample containers 2111 carried on the sample component 2100 to the cover opening station in sequence; the sample pressing mechanism 2300 includes a fourth driving member 2310 and a pressing member 2320, the fourth driving member 2310 and the pressing member 2320 The output end of the moving member 2310 is connected to the pressing member 2320. The fourth driving member 2310 can drive the pressing member 2320 to move between an abutting position against the side wall of the sample container 2111 located at the cover opening station and a position away from the cover opening station. When the pressing member 2320 is located at the abutting position, the sample container 2111 is pressed between the pressing member 2320 and the sample component 2100, thereby fixing the sample container 2111, preparing for the subsequent cover opening operation, and ensuring the stability of the sample container 2111 during the cover opening operation.

[0147] A sample clamping mechanism 2300 is provided in the sample analyzer. The clamping member 2320 of the sample clamping mechanism 2300 can clamp the sample container 2111 at the side of the sample container 2111. Therefore, the sample clamping mechanism 2300 can be arranged on the side of the sample container 2111, so that there is a larger space above the sample container 2111, thereby reducing the difficulty of the structural layout of the sample analyzer; and the sample clamping mechanism 2300 is arranged on one side of the sample container 2111, and cooperates with the sample component 2100 to clamp the sample container 2111. The structure is relatively simple, which is conducive to reducing the manufacturing cost of the sample analyzer.

[0148] The sample analyzer may further include a cover opening mechanism, a sample dispensing mechanism, a reagent dispensing mechanism, a mixing mechanism, a reaction mechanism, and a measuring mechanism. After the sample pressing mechanism 2300 presses the sample container 2111, the cover opening mechanism may clamp the container cover 2112 and pull the container cover 2112 upwards, thereby separating the container cover 2112 from the sample container 2111.

[0149] The sample dispensing mechanism is used to absorb the sample in the sample container 2111 and discharge it into the reaction cup. For example, the sample dispensing mechanism may include a sample needle and a first displacement mechanism for driving the sample needle to move, and the first displacement mechanism may be set as a two-dimensional or three-dimensional displacement platform. Driven by the first displacement mechanism, the sample needle can move to the opened sample container 2111 and absorb the sample inside the sample container 2111; after absorbing the sample, the sample needle moves to the reaction cup to be loaded with the sample under the drive of the first displacement mechanism, and then discharges the sample into the reaction cup.

[0150] The reagent dispensing mechanism is used to absorb the reagent and discharge it into the reaction cup. For example, the reagent dispensing mechanism may include a reagent needle and a second displacement mechanism for driving the reagent needle to move, and the second displacement mechanism may be set as a two-dimensional or three-dimensional displacement platform. Driven by the second displacement mechanism, the reagent needle can move to the reaction cup to be added with the reagent; then, the reagent needle discharges the reagent into the reaction cup. The reagent discharged by the reagent needle can be drawn from a container for storing the reagent of the reagent dispensing mechanism.

[0151] The mixing mechanism is used to mix the reaction liquid in the reaction cup so that the sample and the reagent are fully mixed. The reaction liquid is at least a mixture of the sample and the reagent. The mixing mechanism can fix the reaction cup and drive the reaction cup to perform periodic motion, thereby achieving mixing of the reaction liquid.

[0152] The reaction mechanism is used to place the reaction cup and incubate the reaction liquid in the reaction cup. The reaction mechanism has at least one placement position for placing the reaction cup. After mixing, the reaction cup will be placed in the reaction mechanism.

[0153] The detection mechanism is used to measure the reaction solution after incubation to obtain the detection result. For example, the detection mechanism includes an instrument for measuring a certain component; for another example, the detection mechanism includes a light measuring component, which detects the luminous intensity of the reaction solution so that the detection mechanism can calculate the concentration of the component to be measured in the sample.

[0154] Reference Fig.10 and Fig.12 The sample pressing mechanism 2300 also includes a fourth abutment member 2330. The fourth abutment member 2330 and the pressing member 2320 are respectively located on both sides of the sample component 2100. When the pressing member 2320 presses the sample container 2111, the fourth abutment member 2330 abuts against and limits the sample component 2100 to keep the sample component 2100 upright, thereby keeping the sample container 2111 upright and preventing the sample container 2111 from tipping over and causing the sample to be contaminated.

[0155] There are many ways to implement the specific contact position of the clamping member 2320 and the sample container 2111. For example, in some embodiments, the clamping member 2320 can be pressed on one side of the portion of the sample container 2111 exposed from above the sample component 2100, and the other side of the sample container 2111 abuts against the sample component 2100, so that the forces on both sides of the sample container 2111 are balanced, thereby achieving compression of the sample container 2111.

[0156] In other embodiments, reference Fig.10 and Fig.12The sample component 2100 includes a first side wall 2120 and a second side wall 2130. There is at least one carrying cavity 2140 between the first side wall 2120 and the second side wall 2130. The first side wall 2120 is provided with at least one first opening 2121. The first opening 2121 is correspondingly connected to the carrying cavity 2140. The carrying cavity 2140 is used to accommodate the sample container 2111. The fourth driving member 2310 is configured to drive the pressing member 2320 to extend into the first opening 2121 to abut against the side wall of the sample container 2111. The first side wall 2120 and the second side wall 2130 are arranged opposite to each other, and a first opening 2121 is opened on the first side wall 2120. When the pressing member 2320 presses the side wall of the sample container 2111 exposed from the first opening 2121, the other side of the sample container 2111 opposite to the pressed side directly abuts against the second side wall 2130, that is, on both sides of the sample container 2111, the pressing force of the pressing member 2320 on the sample container 2111 and the supporting force of the second side wall 2130 on the sample container 2111 are located on the same straight line, so that the sample container 2111 will not have a rotation tendency, which is beneficial to improving the stability of the pressing of the sample container 2111.

[0157] Reference Fig.10 and Fig.12 The sample transport mechanism 2200 includes a first guide plate 2210 and a second guide plate 2220. The first guide plate 2210 and the second guide plate 2220 both extend along the transport direction of the sample component 2100. The first guide plate 2210 is located outside the first side wall 2120, and the second guide plate 2220 is located outside the second side wall 2130. The first guide plate 2210 and the second guide plate 2220 guide the sample component 2100 on both sides of the sample component 2100, respectively, so that the sample component 2100 is transported in an upright state along a set direction, and the sample component 2100 is lifted. The first guide plate 2210 has a second opening 2211. When the sample container 2111 reaches the cover opening station, in the moving direction of the pressing member 2320, the projection of the second opening 2211 and the projection of the first opening 2121 corresponding to the sample container 2111 at least partially overlap. Therefore, in the process of the pressing member 2320 moving toward the direction close to the sample component 2100 to the abutting position, it can smoothly pass through the second opening 2211 and the first opening 2121 in sequence and abut against the side wall of the sample container 2111, thereby ensuring the smooth progress of the pressing action.

[0158] It should be noted that the second guide plate 2220 can be used as the fourth abutment member 2330, which not only plays the role of guiding the sample member 2100 when the sample transport member transports the sample member 2100, but also plays the role of abutting and limiting the sample member 2100 when the sample clamping part 2322 clamps the sample container 2111. There is no need to set up two components to perform two functions respectively, which is beneficial to reducing the number of components and reducing manufacturing costs.

[0159] The fourth driving member 2310 can drive the clamping member 2320 to move between the abutment position and the position away from the cover position in a variety of ways. By way of example, several specific embodiments of the connection method between the fourth driving member 2310 and the clamping member 2320 are given below. It should be noted that the following are only examples and are not intended to limit the present application.

[0160] Example 1

[0161] Reference Figures 10 to 13 The fourth driving member 2310 is a rotating motor. The sample pressing mechanism 2300 also includes a connecting rod 2340, a pushing member 2350 and a sliding block 2360. One end of the connecting rod 2340 is connected to the output shaft of the fourth driving member 2310, and the other end is connected to the pushing member 2350, so that the rotation of the output shaft of the fourth driving member 2310 can drive the pushing member 2350 to rotate; the sliding block 2360 has a pushing groove 2361, and the pushing member 2350 is accommodated in the pushing groove 2361 and abuts against the pushing groove 2361, so that the rotation of the pushing member 2350 can drive the sliding block 2360 to move; the sliding block 2360 is connected to the pressing member 2320, so that the movement of the sliding block 2360 can drive the pressing member 2320 to move between the abutting position and the position away from the cover position. The rotational driving force output by the rotary motor can be converted into a linear driving force through the connecting rod 2340, the pushing member 2350 and the sliding block 2360 provided with a pushing groove 2361, so as to realize the movement of the clamping member 2320 between the abutment position and the position away from the cover position. The structure is relatively simple and easy to install.

[0162] Further, refer to Fig.11 and Fig.13 The output shaft of the fourth driving member 2310 can rotate in a first rotation direction and a second rotation direction, the first rotation direction being opposite to the second rotation direction, and the sample pressing mechanism 2300 is configured such that when the output shaft of the fourth driving member 2310 rotates in the first rotation direction, the rotation of the output shaft drives the pushing member 2350 to rotate in a direction close to the sample component 2100, and the pushing member 2350 abuts against the inner wall of the pushing groove 2361 on the side close to the sample component 2100, thereby pushing the sliding block 2360 to move in a direction close to the abutting position, so that the pressing member 2320 moves in a direction close to the abutting position until the sample pressing mechanism 2300 is moved by Fig.11The status shown reaches Fig.13 When the output shaft of the fourth driving member 2310 rotates along the second rotation direction, the rotation of the output shaft drives the pushing member 2350 to rotate in the direction away from the sample component 2100, and the pushing member 2350 abuts against the inner wall of the pushing groove 2361 on the side away from the sample component 2100, thereby pushing the sliding block 2360 to move in the direction away from the cover station, so that the pressing member 2320 moves in the direction away from the cover station until the sample pressing mechanism 2300 is closed. Fig.13 The status shown reaches Fig.11 By rotating in two different directions to drive the pressing member 2320 to move in two different directions respectively, the idling time of the fourth driving member 2310 can be reduced, the energy consumption can be reduced, and the energy utilization efficiency can be improved.

[0163] Further, refer to Figures 10 to 13 The pushing member 2350 is cylindrical and rotatably connected to the connecting rod 2340. During the movement of the pressing member 2320 between the abutment position and the position away from the cover position, the pushing member 2350 moves relative to the inner wall of the pushing groove 2361. The pushing member 2350 is cylindrical and rotatably connected to the connecting rod 2340, which can cause rolling friction between the pushing member 2350 and the inner wall of the pushing groove 2361. Compared with sliding friction, the resistance to the movement of the pushing member 2350 is smaller, and the movement of the sample pressing mechanism 2300 can be smoother.

[0164] Further, refer to Fig.11 and Fig.13 The pushing groove 2361 has a limiting wall 2362 at one end in the third direction. When the connecting rod 2340 rotates to the limit position along the first rotation direction, the pushing member 2350 abuts against the limiting wall 2362, that is, the limiting wall 2362 can limit the limit position of the connecting rod 2340 rotating along the first rotation direction, limit the rotation range of the connecting rod 2340, and prevent the fourth driving member 2310 from idling. In addition, the pushing groove 2361 may also be provided with a limiting wall 2362 at the other end in the third direction. When the connecting rod 2340 rotates to the limit position along the second rotation direction, the pushing member 2350 abuts against the limiting wall 2362, that is, the limiting wall 2362 can limit the limit position of the connecting rod 2340 rotating along the second rotation direction; or, the pushing groove 2361 may also be provided with limiting walls 2362 at both ends in the third direction, and the limiting walls 2362 at both ends respectively limit the limit position of the connecting rod 2340 rotating along the first rotation direction and the limit position of the connecting rod 2340 rotating along the second rotation direction, so that no matter in which direction the connecting rod 2340 rotates, its rotation range is limited, thereby better preventing the fourth driving member 2310 from idling.

[0165] Furthermore, it can be arranged that when the pressing member 2320 is in the abutting position, the pushing member 2350 abuts against the limiting wall 2362, and the limiting wall 2362 cooperates with the connecting rod 2340 to limit, so that the connecting rod 2340 can stay at the position where the pressing member 2320 presses the sample container 2111 to the utmost when rotating in the first rotation direction, thereby preventing the connecting rod 2340 from rotating to exceed the position where the pressing member 2320 presses the sample container 2111 to the utmost, causing the pressing member 2320 to retreat, thereby reducing the stability of the fixation of the sample container 2111.

[0166] Example 2

[0167] The fourth driving member 2310 is a rotary motor. The sample pressing mechanism 2300 further includes an eccentric wheel and a sliding block 2360. The eccentric wheel is connected to the output shaft of the fourth driving member 2310 so that the output shaft of the fourth driving member 2310 can drive the eccentric wheel to rotate. The sliding block 2360 has a pushing groove 2361. The eccentric wheel is accommodated in the pushing groove 2361 and abuts against the inner wall of the pushing groove 2361 so that the rotation of the eccentric wheel can drive the sliding block 2360 to move. The sliding block 2360 is connected to the pressing member 2320 so that the movement of the sliding block 2360 can drive the pressing member 2320 to move between the abutting position and the position far from the cover position. The driving force in the form of rotation output by the rotary motor can be converted into a linear driving force through the eccentric wheel and the sliding block 2360 provided with the pushing groove 2361, so as to realize the movement of the pressing member 2320 between the abutting position and the position far from the cover position. The structure is relatively simple and easy to install.

[0168] Example 3

[0169] The fourth driving member 2310 is a linear motor, and the moving direction of the mover of the fourth driving member 2310 is consistent with the moving direction of the pressing member 2320. The linear motor has a simple structure and a small size, which is conducive to reducing the space occupied by the sample pressing mechanism 2300. In addition, the linear motor outputs a stable motion with high repetitive accuracy, which is conducive to improving the stability and accuracy of the pressing action.

[0170] In addition to the above embodiments, other structural forms can also be set. For example, the fourth driving member 2310 is set to a cylinder, an oil cylinder, etc., and the output rod of the fourth driving member 2310 is connected to the clamping member 2320, so that the moving direction of the output rod is consistent with the moving direction of the clamping member 2320; or, the fourth driving member 2310 is set to a rotary motor, and the output member and the clamping member 2320 are connected by other transmission mechanisms that can realize linear reciprocating motion; as long as the fourth driving member 2310 can drive the clamping member 2320 to move between the abutment position and the position away from the cover position.

[0171] Reference Figures 10 to 13The sample clamping mechanism 2300 also includes a guide rail 2370 and a sliding assembly 2380. The sliding assembly 2380 includes a third slider 2381. The third slider 2381 is slidably connected to the guide rail 2370. The clamping member 2320 is connected to the third slider 2381. The guide rail 2370 extends along the moving direction of the clamping member 2320. The fourth driving member 2310 is configured to drive the third slider 2381 to move along the guide rail 2370 so that the clamping member 2320 moves between the abutment position and the position away from the cover position. The guide rail 2370 can limit the moving direction of the third slider 2381, so that the third slider 2381 can only move along the extension direction of the guide rail 2370, and the extension direction of the guide rail 2370 is consistent with the preset moving direction of the clamping member 2320. The clamping member 2320 is connected to the third slider 2381 to ensure that the clamping member 2320 can stably move along its preset moving direction and prevent the clamping member 2320 from shifting during the movement. When the position of the sample container 2111 at the opening station is accurate, the clamping member 2320 can accurately press the side wall of the sample container 2111 each time it performs a clamping action, thereby ensuring the stability and accuracy of the clamping action.

[0172] Reference Figures 10 to 13 The sliding assembly 2380 also includes a fourth slider 2382 and an elastic member 2383. The fourth slider 2382 is slidably connected to the guide rail 2370 and is located on the side of the third slider 2381 away from the sample component 2100. The output end of the fourth driving member 2310 is connected to the fourth slider 2382, so that the fourth slider 2382 moves along the guide rail 2370; the elastic member 2383 is located between the third slider 2381 and the fourth slider 2382. The expansion and contraction direction of the elastic member 2383 is consistent with the moving direction of the pressing member 2320. When the elastic member 2383 is not compressed, there is a gap between the third slider 2381 and the fourth slider 2382. When the fourth slider 2382 moves along the guide rail 2370, the elastic member 2383 can drive the third slider 2381 to move along the guide rail 2370, so that the pressing member 2320 moves between the abutment position and the position away from the cover position. The third slider 2381 and the fourth slider 2382 are provided to be spaced apart from each other in the initial state, and the two are connected by the elastic member 2383. The fourth driving member 2310 is connected to the fourth slider 2382. The fourth slider 2382 transmits the driving force to the third slider 2381 through the elastic member 2383. When the pressing member 2320 has abutted against the sample container 2111 and the fourth driving member 2310 is still outputting the driving force, the elastic member 2383 can buffer the driving force to prevent the excessive driving force from being directly transmitted to the pressing member 2320, causing the pressing member 2320 to crush the sample container 2111. Specifically, the elastic member 2383 can be a spring, an elastic telescopic rod, or the like.

[0173] Further, refer to Figures 10 to 13The sliding assembly 2380 also includes a connecting piece 2384, which is connected to the fourth slider 2382 and protrudes relative to the fourth slider 2382. The elastic piece 2383 is clamped between the clamping piece 2320 and the connecting piece 2384. The driving force transmitted by the elastic piece 2383 can be directly transmitted to the clamping piece 2320. When the clamping piece 2320 is pressed against the side wall of the sample container 2111, the reaction force of the side wall of the sample container 2111 acting on the clamping piece 2320 and the pressure of the elastic piece 2383 acting on the clamping piece 2320 act on both ends of the clamping piece 2320 respectively, so that the force on both sides of the clamping piece 2320 is more balanced, thereby providing a more stable clamping force.

[0174] Further, refer to Figures 10 to 13 The sliding assembly 2380 further includes a limiting structure 2385, which is penetrated by the connecting member 2384 and connected to the pressing member 2320. The elastic member 2383 is sleeved on the limiting structure 2385. The limiting structure 2385 can limit the elastic member 2383 so that the elastic member 2383 can only be extended and retracted along the extension direction of the limiting structure 2385 without bending, thereby ensuring that the elastic member 2383 can stably transmit the driving force of the fourth driving member 2310, and the connecting member 2384 can be relatively The limiting structure 2385 slides, so that when the fourth driving member 2310 drives the fourth slider 2382 to move toward the sample component 2100, the connecting member 2384 that moves with the fourth slider 2382 can smoothly compress the elastic member 2383. When the fourth driving member 2310 drives the fourth slider 2382 to move away from the sample component 2100, the connecting member 2384 can be smoothly reset under the elastic force of the elastic member 2383, so that the sample clamping mechanism 2300 can operate smoothly.

[0175] Further, refer to Figures 10 to 13 The limiting structure 2385 includes a limiting element 2386 and a guiding element 2387. The limiting element 2386 is connected to one end of the guiding element 2387. The guiding element 2387 is passed through the connecting piece 2384 and is connected to the clamping piece 2320. The limiting element 2386 is located on the side of the connecting piece 2384 away from the clamping piece 2320 and can abut against the connecting piece 2384. The limiting element 2386 can abut and limit the connecting piece 2384 to prevent the connecting piece 2384 from detaching from the limiting structure 2385 and causing the elastic piece 2383 to fall off, thereby improving the stability of the sample clamping mechanism 2300.

[0176] Reference Fig.10 and Fig.12The pressing member 2320 includes a connecting portion 2321 and a pressing portion 2322 which are connected to each other. The width of the connecting portion 2321 is greater than the width of the pressing portion 2322. The connecting portion 2321 is connected to the output end of the fourth driving member 2310, and the pressing portion 2322 is used to press the sample container 2111. The pressing portion 2322 with a smaller width can still press the side wall of the sample container 2111 when the sample container 2111 is small in size, and can also press the side wall of the sample container 2111 when the sample container 2111 is large in size, and has a wider application range; the connecting portion 2321 with a larger width has a higher strength and is convenient for connecting other components. For example, in the embodiment where the pressing member 2320 is connected to the fourth slider 2382 through the elastic member 2383, the connecting portion 2321 has a larger width, which can more stably abut against the elastic member 2383, thereby improving the structural stability.

[0177] See also Figure 14-Figure 26 The fourth aspect of the present application also provides a sample analyzer, specifically referring to Fig.14 In one embodiment, the sample analyzer includes a cover opening mechanism 100 and a first driving member 111 , and the sample analyzer can open the cover of the sample container 132 and discard the cover. Fig.14 A sample container 132 is also shown, and the opening cover of the sample container 132 is provided with a container cover 133. Specifically, a space capable of accommodating a sample is provided inside the sample container 132, an opening for the sample to enter and exit is provided at the top of the sample container 132, and the container cover 133 is detachably connected to the top of the sample container 132 and blocks the opening. The sample container 132 can be a test tube, a bottle, etc. In the drawings of the present invention, the sample containers 132 are all test tubes, and the sample containers 132 are the tube bodies of the test tubes.

[0178] Fig.15 Shows Fig.14 The cover opening mechanism 100, Fig.16 Shows Fig.15 The state when the cover opening mechanism 100 clamps the container cover 133. Fig.15 The cover opening mechanism 100 includes a second clamping arm 109 and a first clamping arm 104, and the second clamping arm 109 and the first clamping arm 104 are used to clamp the container cover 133 together. The second clamping arm 109 includes a cover opening hook 136, Fig.16 In the embodiment, the cover opening hook 136 is located at the first clamping position, and the cover opening hook 136 is used to abut against the bottom surface of the container cover 133 at the first clamping position. Fig.16 When the second clamping arm 109 and the first clamping arm 104 clamp the container cover 133 together, the portion of the container cover 133 abutted by the cover-opening hook 136 is spaced apart from the center of gravity 204 of the container cover 133 in the horizontal direction. Fig.16In the embodiment, the part of the container cover 133 abutted by the cover opening hook 136 is located on the left side of the center of gravity 204 of the container cover 133. When the container cover 133 is cylindrical, the center of gravity 204 of the container cover 133 is located on the central axis of the container cover 133. Fig.16 The first clamping arm 104 is in the second clamping position, and the first clamping arm 104 is used to abut against other outer surfaces of the container cover 133 other than the bottom surface at the second clamping position, and the first clamping arm 104 abuts against the side surface of the container cover 133 (such as Fig.16 In another embodiment, the first clamping arm 104 may also abut against the top surface of the container cover 133 (as shown in Fig.18 When the cross-sectional shape of the container cover 133 is circular, the side surface of the container cover 133 is the outer peripheral surface of the container cover 133.

[0179] When the cover opening hook 136 is in the first clamping position and the first clamping arm 104 is in the second clamping position, the second clamping arm 109 and the first clamping arm 104 clamp the container cover 133. After the second clamping arm 109 and the first clamping arm 104 clamp the container cover 133 and the cover opening hook 136 abuts against the bottom surface of the container cover 133, the first driving member 111 drives the second clamping arm 109 and the first clamping arm 104 to rise, and the container cover 133 rises together with the second clamping arm 109 and the first clamping arm 104. The container cover 133 moves upward relative to the sample container 132 and is separated from the sample container 132 (the sample container 132 is fixed and does not rise together with the second clamping arm 109 and the first clamping arm 104). In this way, the cover of the sample container 132 is opened.

[0180] After the container cover 133 is separated from the sample container 132, the first driving member 111 drives the first clamping arm 104 to move from the second clamping position to the open position, so that the container cover 133 falls off. Fig.17 The first clamping arm 104 is in the open position, and there is a gap between the portion of the first clamping arm 104 that is used to abut the container cover 133 and the container cover 133. During the process of the first clamping arm 104 moving from the second clamping position to the open position. After the first clamping arm 104 moves to the open position, the second clamping arm 109 and the first clamping arm 104 release the container cover 133. Fig.17 As shown, since the second clamping arm 109 is provided with a cover opening hook 136 for abutting against the bottom surface of the container cover 133 and the first clamping arm 104 does not abut against the bottom surface of the container cover 133, during the process of the second clamping arm 109 and the first clamping arm 104 opening to each other, the container cover 133 will be initially carried by the second clamping arm 109. Fig.17As shown, with one end of the cover opening hook 136 abutting against the container cover 133 as a fulcrum, the moment generated by the gravity of the container cover 133 itself causes the container cover 133 to rotate (the top of the container cover 133 rotates to the right), thereby causing the container cover 133 to fall off the cover opening hook 136. In this way, the container cover 133 is thrown away.

[0181] Since the second clamping arm 109 abuts against the bottom surface of the container cover 133 and the first clamping arm 104 does not abut against the bottom surface of the container cover 133, the container cover 133 will briefly stay on the second clamping arm 109 after the second clamping arm 109 and the first clamping arm 104 are opened; and since the portion of the container cover 133 abutted by the cover-opening hook 136 is located on one side of the center of gravity 204 of the container cover 133 in the horizontal direction, the container cover 133 that stays on the second clamping arm 109 will fall in a preset direction under the action of its own gravity. Among them, the portion of the container cover 133 abutted by the cover-opening hook 136 and the center of gravity 204 of the container cover 133 are arranged in sequence according to the preset direction ( Fig.17 The preset direction is from left to right. Therefore, the sample analyzer of the present invention can improve the controllability of the falling direction of the container cover 133 and reduce the risk of deviation in the falling position of the container cover 133.

[0182] In one embodiment, the sample analyzer may further include a fixing mechanism, a sample dispensing mechanism, a reagent dispensing mechanism, a mixing mechanism, a reaction mechanism, a detection mechanism, and a recovery mechanism.

[0183] The fixing mechanism is used to fix the sample container 132. The fixing mechanism can be provided with a plurality of sample positions for placing the sample container 132, and the fixing mechanism can clamp the sample container 132 to fix the sample container 132. After the fixing mechanism fixes the sample container 132, the cover opening mechanism 100 can clamp the container cover 133 and pull the container cover 133 upward, so that the container cover 133 is separated from the sample container 132.

[0184] The sample dispensing mechanism is used to absorb the sample in the sample container 132 and discharge it into the reaction cup. For example, the sample dispensing mechanism may include a sample needle and a first displacement mechanism for driving the sample needle to move, and the first displacement mechanism may be set as a two-dimensional or three-dimensional displacement platform. Driven by the first displacement mechanism, the sample needle can move to the opened sample container 132 and absorb the sample inside the sample container 132; after absorbing the sample, the sample needle moves to the reaction cup to be loaded with the sample under the drive of the first displacement mechanism, and then discharges the sample into the reaction cup.

[0185] The reagent dispensing mechanism is used to absorb the reagent and discharge it into the reaction cup. For example, the reagent dispensing mechanism may include a reagent needle and a second displacement mechanism for driving the reagent needle to move, and the second displacement mechanism may be set as a two-dimensional or three-dimensional displacement platform. Driven by the second displacement mechanism, the reagent needle can move to the reaction cup to be added with the reagent; then, the reagent needle discharges the reagent into the reaction cup. The reagent discharged by the reagent needle can be drawn from a container for storing the reagent of the reagent dispensing mechanism.

[0186] The mixing mechanism is used to mix the reaction liquid in the reaction cup so that the sample and the reagent are fully mixed. The reaction liquid is at least a mixture of the sample and the reagent. The mixing mechanism can fix the reaction cup and drive the reaction cup to perform periodic motion, thereby achieving mixing of the reaction liquid.

[0187] The reaction mechanism is used to place the reaction cup and incubate the reaction liquid in the reaction cup. The reaction mechanism has at least one placement position for placing the reaction cup. After mixing, the reaction cup will be placed in the reaction mechanism.

[0188] The detection mechanism is used to measure the reaction solution after incubation to obtain the detection result. For example, the detection mechanism includes an instrument for measuring a certain component; for another example, the detection mechanism includes a light measuring component, which detects the luminous intensity of the reaction solution so that the detection mechanism can calculate the concentration of the component to be measured in the sample.

[0189] The recycling mechanism is used to recycle the container cover 133 dropped from the cover opening mechanism 100. For example, the recycling mechanism includes a first recycling member with an opening at the top, and the first recycling member is used to collect the discarded container cover 133. The recycling mechanism may also include a movable guide portion 117 (such as Fig.14 As shown), after the opening process is completed, the guide portion 117 can move to the bottom of the second clamping arm 109, and the container cover 133 can fall into the guide portion 117 after falling from the second clamping arm 109. Subsequently, the container cover 133 slides along the inclined guide portion 117 into the first recovery member.

[0190] Reference Fig.16, the cover opening hook 136 includes a first abutting surface 139, and the first abutting surface 139 is tilted upward. More specifically, the second clamping arm 109 also includes a connecting body 138, the cover opening hook 136 is connected to the bottom end of the connecting body 138, and the end of the first abutting surface 139 away from the connecting body 138 is used to abut against the bottom surface of the container cover 133, and the height of the first abutting surface 139 gradually increases from the end (left end) of the first abutting surface 139 close to the connecting body 138 to the end (right end) of the first abutting surface 139 away from the connecting body 138. The advantage of this arrangement is that the cover opening hook 136 can more easily hook the edge of the bottom surface of the container cover 133, and the risk of the container cover 133 falling is low when the second clamping arm 109 and the first clamping arm 104 clamp the container cover 133.

[0191] Reference Fig.16 In one embodiment, when the second clamping arm 109 and the first clamping arm 104 clamp the container cover 133 together, the horizontal distance between the portion of the container cover 133 abutted by the cover opening hook 136 and the connecting body 138 is smaller than the horizontal distance between the center of gravity 204 of the container cover 133 and the connecting body 138. That is, the portion of the container cover 133 abutted by the cover opening hook 136 is closer to the connecting body 138 than the center of gravity of the container cover 133. Fig.16 For example, the portion of the container cover 133 abutted by the cover opening hook 136 is arranged on the left side of the center of gravity of the container cover 133. This arrangement is conducive to shortening the horizontal length of the cover opening hook 136 and reducing the shape complexity of the cover opening hook 136. In addition, this arrangement is also conducive to rotating the container cover 133 in a direction away from the connecting body 138 of the second clamping arm 109 and falling, reducing the risk of the connecting body 138 hindering the container cover 133 from falling, and improving the success rate of the container cover 133 falling in a preset direction.

[0192] Reference Fig.17 The first clamping arm 104 includes a second abutting surface 141, which is used to clamp the container cover 133 together with the second clamping arm 109. The second abutting surface 141 is set to a plane to reduce the shape complexity of the first clamping arm 104, thereby reducing the processing difficulty of the first clamping arm 104.

[0193] In one embodiment, the second clamping arm 109 is configured such that: during the process in which the first driving member 111 drives the first clamping arm 104 to move from the second clamping position to the open position, the second clamping arm 109 remains fixed. Fig.16 and Fig.17"The second clamping arm 109 remains fixed" can be understood as that the cover-opening hook 136 remains in the first clamping position. Since the second clamping arm 109 remains fixed, during the process of the second clamping arm 109 and the first clamping arm 104 opening each other, the cover-opening hook 136 holding the bottom surface of the container cover 133 will not move in the horizontal direction, and the container cover 133 will not be driven by the cover-opening hook 136 to produce horizontal movement. In this way, the position of the container cover 133 before it falls is fixed, and the falling direction of the container cover 133 will not be affected by its own horizontal movement. The controllability of the falling direction of the container cover 133 and the accuracy of the falling position of the container cover 133 are higher.

[0194] As described above, the first clamping arm 104 is used to abut against the outer surface of the container cover 133 other than the bottom surface. Fig.16 In one embodiment, the first clamping arm 104 is configured such that the first clamping arm 104 abuts against the side of the container cover 133 to cooperate with the second clamping arm 109 to clamp the container cover 133, and the movement of the first clamping arm 104 from the second clamping position to the open position includes a movement component in the horizontal direction. During the movement from the second clamping position to the open position, the first clamping arm 104 can move in the horizontal direction; or, referring to Fig.16 and Fig.17 , the first clamping arm 104 can also rotate upward, and during the rotation of the first clamping arm 104, the horizontal position of the part of the first clamping arm 104 that abuts against the container cover 133 will also change. Since the second clamping arm 109 and the first clamping arm 104 are both abutted against the side of the container cover 133, when the second clamping arm 109 and the first clamping arm 104 clamp the container cover 133, the container cover 133 is not easy to move horizontally, and the position stability of the container cover 133 is relatively high.

[0195] The first clamping arm 104 may not abut against the side of the container cover 133. Fig.18 In another embodiment, the first clamping arm 104 is configured such that the first clamping arm 104 abuts against the top surface of the container cover 133 to cooperate with the first clamping arm 104 to clamp the container cover 133, and the movement of the first clamping arm 104 from the second clamping position to the open position includes a movement component in the vertical direction. Fig.18 As shown, when the second clamping arm 109 and the first clamping arm 104 clamp the container cover 133 together, the part of the container cover 133 abutted by the cover opening hook 136 is the first part 205, and the part of the container cover 133 abutted by the first clamping arm 104 is the second part 206. The first part 205 and the second part 206 are both arranged on the same side of the center of gravity, and the second part 206 is located on the side of the first part 205 away from the center of gravity. Fig.18For example, the first portion 205 and the second portion 206 are both located on the left side of the center of gravity, and the second portion 206 is located on the left side of the first portion 205. Fig.19 As shown, during the process of the first clamping arm 104 moving from the second clamping position to the open position, the first clamping arm 104 may move vertically upward; in other embodiments, when the first clamping arm 104 needs to move to the open position, the bottom end of the first clamping arm 104 may also rotate upward. Based on the relative positions of the first portion 205 and the second portion 206, the container cover 133 will not fall immediately after being separated from the sample container 132, so as to prevent the container cover 133 from falling when the guide portion 117 is not moved to the position where the container cover 133 can be received. Specifically, with one end of the cover opening hook 136 used to abut the container cover 133 as a fulcrum, the torque generated by the force applied by the first clamping arm 104 to the second portion 206 and the torque generated by the gravity of the container cover 133 can offset each other, and the container cover 133 can be stably clamped by the second clamping arm 109 and the first clamping arm 104, and the container cover 133 is not easy to fall before the second clamping arm 109 and the first clamping arm 104 open to each other.

[0196] In some embodiments, the cover opening mechanism 100 further includes a first blocking portion 137 and a second blocking portion 143 . Fig. 20 1 shows the matching relationship among the second clamping arm 109, the first clamping arm 104, the first blocking portion 137, the second blocking portion 143 and the container cover 133 when both the first blocking portion 137 and the second blocking portion 143 are connected to the second clamping arm 109. Fig. 20 When the second clamping arm 109 and the first clamping arm 104 clamp the container cover 133 together, there is a gap between the portion of the container cover 133 abutted by the cover opening hook 136 and the center of gravity 204 of the container cover 133 along the first horizontal direction; the cover opening mechanism 100 also includes a first blocking portion 137 and a second blocking portion 143 distributed along the second horizontal direction, the first blocking portion 137 and the second blocking portion 143 are both connected to the second clamping arm 109 (the first blocking portion 137 and / or the second blocking portion 143 can be connected to the side of the connecting body 138), the second direction and the first direction are perpendicular to each other, and there is a gap between the first blocking portion 137 and the second blocking portion 143 for accommodating the container cover 133, and the first blocking portion 137 is used to limit the container cover 133 in the second direction. For example, referring to Fig. 20 The first direction corresponds to the left-right direction, and the second direction corresponds to the front-back direction. The first blocking portion 137 is arranged in front of the second blocking portion 143; when the second clamping arm 109 and the first clamping arm 104 clamp the container cover 133, the container cover 133 is arranged in the gap, and the first blocking portion 137 and the second blocking portion 143 are both abutted against the side of the container cover 133. The first blocking portion 137 hinders the container cover 133 from moving forward, and the second blocking portion 143 hinders the container cover 133 from moving backward.

[0197] In the case where the cover opening mechanism 100 includes the first blocking portion 137 and the second blocking portion 143, when the container cover 133 is clamped by the second clamping arm 109 and the first clamping arm 104, the container cover 133 is limited in both the first direction and the second direction, and the container cover 133 is not easily offset. On the other hand, during the process of throwing the cover, the first blocking portion 137 and the second blocking portion 143 can prevent the container cover 133 from rotating in the second direction, reducing the risk of the container cover 133 rotating in directions other than the first direction, thereby improving the controllability of the falling direction of the container cover 133 and the accuracy of the falling position.

[0198] In order to limit the container cover 133 in the second direction, the first blocking portion 137 and the second blocking portion 143 may also be arranged at other positions, as long as the force applied by the first blocking portion 137 to the container cover 133 has a non-zero component in the second direction, and the force applied by the second blocking portion 143 to the container cover 133 has a non-zero component in the second direction. Fig.21 In another embodiment, the first blocking portion 137 and the second blocking portion 143 are both connected to the first clamping arm 104. Fig. 22 The first blocking portion 137 and the second blocking portion 143 are not connected to any clamping arm, the first blocking portion 137 is separately provided with the second clamping arm 109 and the first clamping arm 104, and the second blocking portion 143 is separately provided with the second clamping arm 109 and the first clamping arm 104, and the first blocking portion 137 and the second blocking portion 143 can be connected to a bracket 101 of the sample analyzer. For another example, referring to Fig.23 In another embodiment, one of the first blocking portion 137 and the second blocking portion 143 is connected to the second clamping arm 109 , and the other is connected to the first clamping arm 104 .

[0199] Reference Fig. 20 In the case where both the first blocking portion 137 and the second blocking portion 143 are connected to the second clamping arm 109, the first blocking portion 137 and the second blocking portion 143 may also satisfy the following conditions: along the direction from the second clamping arm 109 to the first clamping arm 104 (corresponding to Fig. 20In the direction from left to right in the figure), the distance between the first blocking portion 137 and the second blocking portion 143 in the second direction gradually increases, so that the first blocking portion 137 and the second blocking portion 143 abut the container cover 133 along the first direction and cooperate with the first clamping arm 104 to clamp the container cover 133. "The first blocking portion 137 and the second blocking portion 143 abut the container cover 133 along the first direction" means that the force applied by the first blocking portion 137 to the container cover 133 has a non-zero component in the first direction, and the force applied by the second blocking portion 143 to the container cover 133 has a non-zero component in the first direction. Based on the distance change relationship between the first blocking portion 137 and the second blocking portion 143, the width of the opening side of the gap is larger, and the container cover 133 is easier to enter and exit the gap, and the container cover 133 is not easy to get stuck in the process of entering and exiting the gap. The first blocking portion 137 and the second blocking portion 143 abut the container cover 133 along the first direction, so that the cover opening mechanism 100 can clamp the container cover 133 more stably in the first direction. It should be noted that Fig. 20 The second clamping arm 109 does not directly contact the side of the container cover 133. At this time, the second clamping arm 109 and the first clamping arm 104 clamping the container cover 133 can be understood as: the second clamping arm 109 indirectly presses the side of the container cover 133 through the first blocking portion 137 and the second blocking portion 143, thereby clamping the container cover 133 along the horizontal direction (the horizontal direction is specifically the first direction) with the first clamping arm 104.

[0200] Similarly, if Fig.21 As shown, when the first blocking portion 137 and the second blocking portion 143 are both connected to the first clamping arm 104, the first blocking portion 137 and the second blocking portion 143 can also meet the following conditions: along the direction from the first clamping arm 104 to the second clamping arm 109 (corresponding to Fig.21 The distance between the first blocking portion 137 and the second blocking portion 143 in the second direction gradually increases, so that the first blocking portion 137 and the second blocking portion 143 abut against the container cover 133 along the first direction and cooperate with the second clamping arm 109 to clamp the container cover 133. This arrangement can improve the smoothness of the container cover 133 when entering and exiting the gap, and at the same time enable the cover opening mechanism 100 to clamp the container cover 133 more stably in the first direction. It should be noted that Fig.21 The first clamping arm 104 does not directly contact the side of the container cover 133. At this time, the second clamping arm 109 and the first clamping arm 104 clamping the container cover 133 can be understood as the first clamping arm 104 indirectly presses the side of the container cover 133 through the first blocking portion 137 and the second blocking portion 143, thereby clamping the container cover 133 along the horizontal direction (the horizontal direction is specifically the first direction) with the second clamping arm 109.

[0201] The first driving member 111 will be introduced below.

[0202] In some embodiments, the first driving member 111 may include a lifting power source and an opening and closing power source. The opening and closing power source can drive the second clamping arm 109 and the first clamping arm 104 to close together, so that the second clamping arm 109 and the first clamping arm 104 clamp the container cover 133; the opening and closing power source can also drive the second clamping arm 109 and the first clamping arm 104 to open each other, so that the second clamping arm 109 and the first clamping arm 104 release the container cover 133. The lifting power source is used to lift the opening and closing power source, thereby driving the second clamping arm 109 and the first clamping arm 104 to lift. The opening and closing power source can be set to a cylinder, an oil cylinder, a linear motor, an electromagnet, etc., and the lifting power source can be set to a cylinder, an oil cylinder, a linear motor, a screw module, etc.

[0203] In other embodiments, in order to save the number of power sources and reduce the cost of the sample analyzer, the first driving member 111 may include only one lifting power source. Fig.24 As shown, the cover opening mechanism 100 also includes a base 110, the second clamping arm 109 and the first clamping arm 104 are both movably connected to the base 110, the base 110 is connected to a lifting power source, and the lifting power source is connected to the base 110 and drives the base 110 to rise and fall.

[0204] In the case where the first driving member 111 is only provided with a lifting power source, the second clamping arm 109 and the first clamping arm 104 can clamp the container cover 133 by the gravity of the second clamping arm 109 and the first clamping arm 104. The second clamping arm 109 and the first clamping arm 104 are both rotatably connected to the base 110, and the cover opening hook 136 is configured to be maintained at the first clamping position under the gravity of the second clamping arm 109, and the first clamping arm 104 is maintained at the second clamping position under the gravity of the first clamping arm 104. For example, the second clamping arm 109 includes an upper clamping arm section and a lower clamping arm section, the upper clamping arm section is located on the upper side of the rotation center of the second clamping arm 109, the lower clamping arm section is located on the lower side of the rotation center of the second clamping arm 109, and the cover opening hook 136 is located at the lower clamping arm section. When the second clamping arm 109 is in the first clamping position, the second clamping arm 109 is slightly tilted, the center of gravity of the upper clamping arm section is located on the left side of the rotation center, the center of gravity of the lower clamping arm section is located on the right side of the rotation center, the center of gravity of the upper clamping arm section is located on the upper left side of the center of gravity of the lower clamping arm section, and the torque generated by the gravity of the upper clamping arm section is greater than the torque generated by the gravity of the lower clamping arm section. In this way, the lower clamping arm section will rotate upward and have a tendency to move to the right and approach the first clamping arm 104, and the second clamping arm 109 has a tendency to press against the container cover 133, and the second clamping arm 109 is maintained in the first clamping position under the action of its own gravity. The specific method in which the first clamping arm 104 is maintained in the second clamping position under the action of its own gravity is similar to the above method, and will not be repeated here.

[0205] Alternatively, when the first driving member 111 is only provided with a lifting power source, the second clamping arm 109 and the first clamping arm 104 can clamp the container cover 133 by the elastic force of the elastic member. Fig.25 In one embodiment, the cover opening mechanism 100 includes a second elastic member 131, and the two ends of the second elastic member 131 are respectively connected to the second clamping arm 109 and the base 110, and the elastic force of the second elastic member 131 is used to drive the second clamping arm 109 and the first clamping arm 104 to move closer to each other. The second elastic member 131 can be configured as a tension spring. When the second clamping arm 109 is in the first clamping position, the second elastic member 131 is in a stretched state, and the second elastic member 131 has a tendency to drive the second clamping arm 109 and the first clamping arm 104 to move closer to each other, so that the second clamping arm 109 and the first clamping arm 104 clamp the container cover 133. For another example, referring to Fig.25 In one embodiment, the cover opening mechanism 100 includes a first elastic member 130, and the two ends of the first elastic member 130 are respectively connected to the first clamping arm 104 and the base 110, and the elastic force of the first elastic member 130 is used to drive the first clamping arm 104 and the second clamping arm 109 to approach each other. The first elastic member 130 can also be set as a tension spring. When the first clamping arm 104 is in the second clamping position, the first elastic member 130 is in a stretched state, and the first elastic member 130 has a tendency to drive the second clamping arm 109 and the first clamping arm 104 to approach each other, so that the second clamping arm 109 and the first clamping arm 104 clamp the container cover 133. For another example, the cover opening mechanism 100 includes a third elastic member (not shown), the two ends of the third elastic member are respectively connected to the second clamping arm 109 and the first clamping arm 104, and the third elastic member can also be set as a tension spring. When the second clamping arm 109 is in the first clamping position and the first clamping arm 104 is in the second clamping position, the third elastic member is in a stretched state, and the third elastic member has a tendency to drive the second clamping arm 109 and the first clamping arm 104 to approach each other, so that the second clamping arm 109 and the first clamping arm 104 clamp the container cover 133. In addition, it should be noted that the cover opening mechanism 100 may include at least one of the second elastic member 131, the first elastic member 130 and the third elastic member.

[0206] The above mentioned how to make the second clamping arm 109 and the first clamping arm 104 clamp the container cover 133 when the first driving member 111 is only provided with a lifting power source; the following describes how to open the second clamping arm 109 and the first clamping arm 104 when the first driving member 111 is only provided with a lifting power source.

[0207] When the first clamping arm 104 abuts against the side of the container cover 133 , when the second clamping arm 109 and the first clamping arm 104 need to open and then clamp the container cover 133 , the opening of the second clamping arm 109 and the first clamping arm 104 can be driven by the container cover 133 .

[0208] like Fig.16 As shown, the cover opening hook 136 has a first guide surface 140, and the top end of the first guide surface 140 is connected to the first abutting surface 139 for abutting against one end of the container cover 133. The first clamping arm 104 has a second guide surface 142, and the top end of the second guide surface 142 is connected to the bottom end of the second abutting surface 141. The first guide surface 140 and the second guide surface 142 are inclined. When the lifting power source drives the second clamping arm 109 and the first clamping arm 104 to descend, the first guide surface 140 and the second guide surface 142 will abut against the edge portion of the top surface of the container cover 133; please refer to Fig.14 , Fig.24 and Fig.25 Since the first guide surface 140 and the second guide surface 142 are inclined, as the second clamping arm 109 and the first clamping arm 104 gradually descend, the container cover 133 will push the second clamping arm 109 and the first clamping arm 104 to move horizontally, thereby driving the second clamping arm 109 and the first clamping arm 104 to open each other, so that the second clamping arm 109 and the first clamping arm 104 can descend to a position suitable for clamping the container cover 133. Subsequently, the second clamping arm 109 and the first clamping arm 104 close together and clamp the container cover 133.

[0209] Reference Fig.25 The cover opening mechanism 100 further includes a first stopper 126, which is fixedly connected to the base 110, and the first stopper 126 is synchronously lifted and lowered with the base 110, and the first stopper 126 is synchronously lifted and lowered with the second clamping arm 109 and the first clamping arm 104. The first stopper 126 is arranged between the second clamping arm 109 and the first clamping arm 104. When the base 110 is driven by the first driving member 111 to move downward to the abutting position, the bottom surface of the first stopper 126 abuts against the top surface of the container cover 133 to limit the downward movement of the base 110, and at this time, the cover opening hook 136 abuts against the bottom surface of the container cover 133 or is lower than the bottom surface of the container cover 133. The first stopper 126 can prevent the second clamping arm 109 and the first clamping arm 104 from being too low, thereby reducing the risk that the second clamping arm 109 and the first clamping arm 104 cannot accurately clamp the container cover 133. After the base 110 moves to the abutting position, the first driving member 111 drives the base 110 to move upward, and the second clamping arm 109 and the first clamping arm 104 pull the container cover 133 out of the top of the sample container 132 .

[0210] In addition, refer to Fig.25, the second elastic member 131 tends to drive the second clamping arm 109 to move rightward. In order to keep the second clamping arm 109 fixed during the lid ejection process, when the lid opening hook 136 is in the first clamping position, the second elastic member 131 is in a stretched state, and the first stopper 126 abuts against the second clamping arm 109 (such as Fig.16 As shown in FIG. 1 , the first limiting member 126 limits the second clamping arm 109. In this way, the elastic force applied to the second clamping arm 109 by the second elastic member 131 and the force applied to the second clamping arm 109 by the first limiting member 126 are balanced with each other, so that the second clamping arm 109 remains fixed during the cap ejection process.

[0211] Reference Fig.26 , the cover opening mechanism 100 also includes a first abutment 114, and the first driving member 111 and the first abutment 114 are installed on the same bracket 101. When the second clamping arm 109 and the first clamping arm 104 need to be opened to allow the container cover 133 to fall off, the first clamping arm 104 is pushed by the first abutment 114, thereby achieving the opening of the second clamping arm 109 and the first clamping arm 104. More specifically, the first clamping arm 104 is rotatably connected to the base 110. After the cover opening mechanism 100 pulls out the container cover 133, the first driving member 111 drives the base 110 to continue to rise a certain distance until the top end of the first clamping arm 104 abuts against the first abutment 114; after the top end of the first clamping arm 104 abuts against the first abutment 114, as the base 110 continues to rise to Fig.26 In the position shown, the first abutment member 114 pushes the top end of the first clamping arm 104 to rotate, and the bottom end of the first clamping arm 104 rotates upward and away from the container cover 133 (the second clamping arm 109 remains fixed during this process). In this way, the first clamping arm 104 is opened during the cap throwing process.

[0212] As the base 110 rises, the guide portion 117 will gradually move to the bottom of the second clamping arm 109. When the first clamping arm 104 opens, the container cover 133 falls into the guide portion 117. The guide portion 117 can be driven by another power source, or connected to the cover opening mechanism 100 through some linkage mechanisms. Under the action of the linkage mechanism, as the base 110 rises, the guide portion 117 gradually moves to the bottom of the second clamping arm 109. After the cap is thrown, the first driving member 111 drives the base 110 to descend, so that the first abutting member 114 is separated from the first clamping arm 104, so that the first clamping arm 104 is reset under the action of its own gravity or the elastic force of the first elastic member 130.

[0213] In one embodiment, the lifting power source may include a motor, a first pulley, a second pulley and a belt. The first driving member 111 also includes a bracket 101, a motor is mounted on the bracket 101, the motor is connected to the first pulley and drives the first pulley to rotate, the second pulley is rotatably mounted on the bracket 101, the first pulley is arranged below the second pulley at an interval, and the belt is wound around the first pulley and the second pulley. The base 110 is fixedly connected to the belt, and the section of the belt used to connect to the base 110 is vertically arranged. When the motor drives the first pulley to rotate, the belt moves and drives the base 110 to rise and fall, thereby realizing the lifting and lowering of the second clamping arm 109 and the first clamping arm 104.

[0214] See also Figure 27-Figure 39 In a fifth aspect, the present application further provides a sample analyzer, referring to Figures 27 to 32 A sample analyzer in an embodiment of the present application includes a sample position, a fourth driving member 2310, a motion mechanism 2300, a detection component and a controller, the sample position is used to place a sample container 2111, and the sample container 2111 is used to accommodate a sample; the fourth driving member 2310 is used to drive the motion mechanism 2300 to move closer to or away from the sample position, the detection component is used to output detection parameters, and the controller is used to determine the type of the sample container 2111 of the sample position according to the detection parameters output by the detection component.

[0215] The motion mechanism 2300 includes a fifth abutment member 2320, a connecting member 2330 and an elastic member 2383, wherein the elastic member 2383 is connected between the fifth abutment member 2320 and the connecting member 2330, and one end of the connecting member 2330 that is away from the fifth abutment member 2320 is connected to the fourth driving member 2310, so that the connecting member 2330 is driven to move to the fifth position by the fourth driving member 2310. When the connecting member 2330 is at the fifth position, the fifth abutment member 2320 is at the sixth position relative to the connecting member 2330 and the free end is at the position where the sample container 2111 is located. When the fifth abutment member 2320 at the sixth position is acted upon by an external force, it retreats from the sixth position to the seventh position relative to the connecting member 2330, and the seventh position is located between the sixth position and the fifth position.

[0216] When the fourth driving member 2310 and the moving mechanism 2300 are in the initial position as a whole, the fifth abutting member 2320 is at a certain distance from the position of the sample position for placing the sample container 2111. In the case that the sample position does not have the sample container 2111, the fourth driving member 2310 drives the connecting member 2330 to move toward the sample position to the fifth position, and the connecting member 2330 pushes the fifth abutting member 2320 to move toward the sample position through the elastic member 2383. The fifth abutting member 2320 can move to the sixth position and the free end of the fifth abutting member 2320 can be located at the position for accommodating the sample container 2111. In the case that the sample position has the target sample container 2111, the fifth abutting member 2320 abuts against the target sample container 2111 during the above movement, and can retreat to the seventh position relative to the connecting member 2330 under the abutment of the sample container 2111. The sixth position and the seventh position of the fifth abutting member 2320 relative to the connecting member 2330 can be detected by the detection component to output detection parameters, so the controller can determine the type of the sample container 2111 at the sample position based on the detection parameters.

[0217] For ease of understanding, the different types of sample containers 2111 mentioned in the embodiments of the present invention can be simply divided into first type sample containers 2111, second type sample containers 2111, third type sample containers 2111, etc. In some embodiments of the present invention, the controller determines the type of sample container 2111 of the sample position based on the detection parameters output by the detection component, which can be one of a hard sample container 2111, a soft sample container 2111, and a micro-cup sample container 2111; the hardness of the hard sample container 2111 is greater than that of the soft sample container 2111, so the displacement of the fifth abutment 2320 abutting against the hard sample container 2111 relative to the connecting member 2330 will be greater than the displacement of the fifth abutment 2320 abutting against the soft sample container 2111 relative to the connecting member 2330, thereby different detection parameters can be output through the detection component to achieve identification of the two. The height of the micro-cup sample container 2111 is smaller than that of the hard sample container 2111 and the soft sample container 2111. Therefore, the fifth abutment member 2320 can abut against the sides of the hard sample container 2111 and the soft sample container 2111 and retreat relative to the connecting member 2330 without abutting against the micro-cup sample container 2111 and thus not retreating. Thus, different detection parameters can be output through the detection component to distinguish the micro-cup sample container 2111 from the hard sample container 2111 and the soft sample container 2111; or when the elastic member 2383 is relatively elastic and the material of the soft sample container 2111 is relatively soft, it abuts against the soft sample container 2111 without retreating, thereby distinguishing the hard sample container 2111 from the soft sample container 2111 and the micro-cup sample container 2111. The hard sample container 2111, the soft sample container 2111, and the micro-cup sample container 2111 are several types of sample containers 2111 commonly used in sample analyzers, wherein the hard sample container 2111 can be provided with a container cover to seal the sample, so when the sample analyzer needs to analyze the sample in the hard sample container 2111, it is necessary to remove the cover first. As a reference, in some embodiments of the present invention, the first type of sample container 2111 can also be specifically understood as a hard sample container 2111, the second type of sample container 2111 can be specifically understood as a soft sample container 2111, and the third type of sample container 2111 can be specifically understood as a micro-cup sample container 2111, and the specific types are only used as references for specific implementations.

[0218] According to different detection methods, the detection parameters output by the detection component may have different categories to reflect whether the fifth abutment 2320 reaches the seventh position; or, the detection parameters output by the detection component may have different parameter ranges to reflect the relative position change between the fifth abutment 2320 and the connecting member 2330.

[0219] In some embodiments, when the fifth abutment 2320 is located at the sixth position and the seventh position, the detection parameters output by the detection component have different categories, and the controller determines the type of the sample container 2111 of the sample position based on the category of the detection parameter. For example, the detection component detects that the fifth abutment 2320 is located at the seventh position and outputs the first category detection parameter, otherwise it outputs the second category detection parameter, and the controller determines that the sample position has the first type of sample container 2111 based on the first category detection parameter.

[0220] When implementing it, refer to Fig.29 The detection component may include an optical coupling sensor 2400 and a shielding member 2410, one of the optical coupling sensor 2400 and the shielding member 2410 is connected to the fifth abutment member 2320, and the other is connected to the connecting member 2330 or fixed on the frame, when the fifth abutment member 2320 is located at the sixth position, the shielding member 2410 shields the optical coupling sensor 2400, and when the fifth abutment member 2320 is located at the seventh position, the optical coupling sensor 2400 and the shielding member 2410 are staggered; or, when the fifth abutment member 2320 is located at the sixth position, the shielding member 2410 and the optical coupling sensor 2400 are staggered, and when the fifth abutment member 2320 is located at the seventh position, the shielding member 2410 shields the optical coupling sensor 2400; the categories of the detection parameters output by the optical coupling sensor 2400 being blocked by the shielding member 2410 and the optical coupling sensor 2400 and the shielding member 2410 being staggered are different. For example, when the fifth abutment 2320 is located at the sixth position, the shielding member 2410 shields the optical coupling sensor 2400, and the optical coupling sensor 2400 outputs the second category detection parameter; when the fifth abutment 2320 is located at the seventh position, the optical coupling sensor 2400 and the shielding member 2410 are staggered, and the optical coupling sensor 2400 outputs the first category detection parameter; or, when the fifth abutment 2320 is located at the sixth position, the shielding member 2410 and the optical coupling sensor 2400 are staggered, and the optical coupling sensor 2400 outputs the second category detection parameter; when the fifth abutment 2320 is located at the seventh position, the shielding member 2410 shields the optical coupling sensor 2400, and the optical coupling sensor 2400 outputs the first category detection parameter. The controller determines that the sample position has the first type of sample container 2111 based on the first category detection parameter.

[0221] During the implementation of this embodiment, the detection component can be used to detect whether the fifth abutment 2320 is located at the seventh position, thereby confirming whether the sample position has the target sample container 2111. Specifically, during the movement of the connecting member 2330 to the fifth position, the fifth abutment 2320 retreats to the seventh position relative to the connecting member 2330 via the abutment with the target sample container 2111, thereby outputting the first category detection parameter via the detection component. The controller determines that the sample position has the first type of sample container 2111 based on the first category detection parameter, so as to facilitate subsequent processing by the adapted sample analyzer.

[0222] refer to Figure 33 to Figure 36 In some embodiments, the motion mechanism 2300 may further include a detection member, which is disposed at the free end of the fifth abutment member 2320. When the fifth abutment member 2320 is located at the sixth position and the seventh position, the types of signals output by the detection member are different; the controller is further configured to determine the sample container 2111 according to the types of signals output by the detection member and the types of detection parameters output by the detection component. For example, the detection member can output a first signal when abutted, and output a second signal otherwise, wherein the controller determines that the sample position has a first type of sample container 2111 based on the first signal and the first type of detection parameter; the controller determines that the sample position has a second type of sample container 2111 based on the first signal and the second type of detection parameter; the controller determines that the sample position has a third type of sample container 2111 or does not have a sample container 2111 based on the second signal and the second type of detection parameter.

[0223] In a specific implementation, the detection member may include a telescopic rod 2340 and a first sensor, the first sensor being connected to the free end of the fifth abutment 2320, the telescopic rod 2340 being connected to the first sensor and extending toward the sample position, and in the process of the fourth driving member 2310 driving the connecting member 2330 to move to the fifth position, the detection member located at the free end of the fifth abutment 2320 moves toward the sample position, and the telescopic rod 2340 is suitable for retracting toward the fifth abutment 2320 under the action of an external force, and the first sensor is used to output a first signal when the telescopic rod 2340 retracts toward the fifth abutment 2320, and output a second signal when the telescopic rod 2340 does not retract toward the fifth abutment 2320, wherein the first sensor may be a sliding rheostat, and its resistance value may be controlled by mechanical displacement (i.e., the telescopic displacement of the telescopic rod 2340) to achieve measurement of displacement parameters. The detection member may also be a pressure sensor, which is used to output a first signal when the connecting member 2330 is displaced to the fifth position and is pressed by an external force, and to output a second signal when it is not pressed.

[0224] Take the detection component as the optical coupler sensor 2400 as an example:

[0225] refer to Fig.33 , the connecting member 2330 is located at the fifth position, the telescopic rod 2340 is not pressed, the fifth abutting member 2320 is located at the sixth position, the first sensor outputs the second signal, the optical coupling sensor 2400 is not blocked and outputs the second category detection parameter, and the controller determines whether the sample position has the third type of sample container 2111 or does not have the sample container 2111 based on the second signal and the second category detection parameter;

[0226] refer to Fig.34, the connecting member 2330 is located at the fifth position, the telescopic rod 2340 is pressed, the fifth abutting member 2320 is located at the sixth position, the first sensor outputs the first signal, the optical coupling sensor 2400 is not blocked and outputs the second category detection parameter, and the controller determines that the sample position has the second type sample container 2111 based on the first signal and the second category detection parameter;

[0227] refer to Fig.35 , the connecting member 2330 is located at the fifth position, the telescopic rod 2340 is pressed and the fifth abutting member 2320 is located at the seventh position, the first sensor outputs a first signal, the optical coupling sensor 2400 is not blocked and outputs a first category detection parameter, and the controller determines that the sample position has a first type of sample container 2111 based on the first signal and the first category detection parameter;

[0228] In the above embodiments, reference Figures 10 to 12 , the fifth abutment member 2320 retreats to the seventh position relative to the connection member 2330, and can be configured to have at least two seventh positions, the two seventh positions are at different distances from the fifth position, and at least two of the above-mentioned detection components are provided, and one detection component is provided for each seventh position. When the fourth driving member 2310 drives the connection member 2330 to move to the fifth position, the controller determines that the sample position has a first type of sample container 2111 based on two first category detection parameters; the controller determines that the sample position has a second type of sample container 2111 based on one first category detection parameter; the controller determines that the sample position has a third type of sample container 2111, or does not have a sample container 2111, based on the second category detection parameter.

[0229] refer to Figure 36 to Figure 38 Taking the detection component as the optical coupling sensor 2400 as an example, the sample analyzer is provided with two optical coupling sensors 2400 and a shielding sheet, which are arranged along the movement direction of the fifth abutment member 2320 (as shown in the left and right direction in the figure), and the shielding sheet is set corresponding to the light exit gap of the optical coupling. During identification:

[0230] refer to Fig.36 , when the connecting member 2330 is located at the fifth position, the fifth abutting member 2320 is located at the sixth position, the two optical coupling sensors 2400 are not blocked, and the second category detection parameters are output, and the controller determines that the sample position has the third type sample container 2111 or does not have the sample container 2111 based on the absence of the first category detection parameters and the second category detection parameters;

[0231] refer to Fig.37When the connecting member 2330 is located at the fifth position, the fifth abutting member 2320 is abutted and retracted to the first seventh position, the optical coupling sensor 2400 located on the right side is blocked and outputs a first category detection parameter, and the optical coupling sensor 2400 located on the left side is not blocked and outputs a second category detection parameter. The controller determines that the sample position has a second type sample container 2111 based on a first category detection parameter;

[0232] refer to Fig.38 When the connecting member 2330 is located at the fifth position, the fifth abutting member 2320 is abutted and retracted to the second seventh position, the two optical coupling sensors 2400 are blocked, and two first category detection parameters are output. The controller determines that the sample position has a second type sample container 2111 based on the two first category detection parameters.

[0233] In other embodiments of the present invention, when the fifth abutment 2320 is located at the sixth position and the seventh position, the detection parameters output by the detection component are in different parameter intervals, and the controller determines the type of the sample container 2111 of the sample position based on the parameter interval of the detection parameters. For example, when the fifth abutment 2320 is located at the seventh position, the detection parameters output by the detection component are in the first parameter interval, and when the fifth abutment 2320 is located at the sixth position, the detection parameters output by the detection component are in the second parameter interval, and the first parameter interval and the second parameter interval are different from each other. The controller determines that the sample position has a first type of sample container 2111 based on the detection parameters being in the first parameter interval.

[0234] In a specific embodiment, the detection component may be a distance sensor, which is connected to the connecting member 2330 or the fifth abutment 2320. When the connecting member 2330 is located at the fifth position, the distance sensor detects the distance between the connecting member 2330 and the fifth abutment 2320 and outputs a detection parameter. The controller determines that the sample position has a first type of sample container 2111 based on the detection parameter being in the first parameter range. Specifically, the distance between the fifth abutment 2320 located at the seventh position and the connecting member 2330 is greater than the distance between the fifth abutment 2320 located at the sixth position and the connecting member 2330. The distance sensor detects the distance between the connecting member 2330 and the fifth abutment 2320 located at the seventh position and outputs a detection parameter in the first parameter range. The distance sensor detects the distance between the connecting member 2330 and the fifth abutment 2320 located at the sixth position and outputs a detection parameter in the second parameter range. The distance sensor may also output a detection signal only when the detected detection parameter is in the first parameter range, that is, it outputs a detection signal when it detects that the distance between the connecting member 2330 and the fifth abutment 2320 is in the first parameter range. The controller determines that the sample position has a first type of sample container 2111 based on the detection parameter being in the first parameter range.

[0235] In a specific embodiment, the detection component can also be a displacement sensor, which is connected to the connecting member 2330 or the fifth abutment 2320 and is used to detect the relative displacement of the connecting member 2330 and the fifth abutment 2320. When the fourth driving member 2310 drives the connecting member 2330 to move to the fifth position, the displacement sensor detects the relative displacement of the connecting member 2330 and the fifth abutment 2320 and outputs a detection parameter. The controller determines that the sample position has a first type of sample container 2111 based on the detection parameter being in the first parameter range. For example, the displacement sensor detects the relative displacement between the connecting member 2330 and the fifth abutment 2320 located at the seventh position, and outputs the detection parameters in the first parameter range. The displacement sensor detects the relative displacement between the connecting member 2330 and the fifth abutment 2320 located at the sixth position, and outputs the detection parameters in the second parameter range. The displacement sensor may also output a detection signal only when the detected detection parameter is in the first parameter range, that is, the detection signal is output when the relative displacement between the connecting member 2330 and the fifth abutment 2320 is detected to be in the first parameter range. The controller determines that the sample position has the first type of sample container 2111 based on the detection parameters in the first parameter range.

[0236] In the above embodiment, the fifth abutment 2320 retreats to the seventh position relative to the connection member 2330 and can be configured to have at least two seventh positions. When the detection component detects that the fifth abutment 2320 is located at each seventh position, the detection parameter is outputted respectively. When the fifth abutment 2320 is located at different seventh positions, the detection parameter outputted by the detection component is in different parameter intervals. When the fourth driving member 2310 drives the connection member 2330 to move to the fifth position, the controller determines that the sample position has a first type of sample container 2111 based on the detection parameter being in the first parameter interval, the controller determines that the sample position has a second type of sample container 2111 based on the detection parameter being in the second parameter interval, and the controller determines that the sample position has a third type of sample container 2111 or does not have a sample container 2111 based on the detection parameter being in the third parameter interval, wherein the second parameter interval is between the first parameter interval and the third parameter interval.

[0237] The sample analyzer of the embodiment of the present invention can identify one type of sample container 2111 from multiple types of sample containers 2111, or identify two types of sample containers 2111, or identify three types of sample containers 2111, and can be configured according to actual detection requirements. Taking identifying one type of sample container 2111 from multiple types of sample containers 2111 as an example:

[0238] For example, taking the target sample type sample container as a hard sample container 2111, in some usage scenarios, the sample analyzer needs to identify the hard sample container 2111 for subsequent operations, and needs to identify the hard sample container 2111 from other types of sample containers 2111 such as soft sample containers 2111 and micro cup sample containers 2111. During the process of the connecting member 2330 moving toward the sample position to the first position, the elastic member 2383 can be configured to be suitable for when the fifth abutting member 2320 abuts against the hard sample container 2111, the fifth abutting member 2320 can overcome the elastic force of the elastic member 2383 and retreat to the seventh position, while when abutting against the soft sample container 2111, the fifth abutting member 2320 cannot overcome the elastic force of the elastic member 2383 and basically remains in the sixth position, so that the controller can identify the hard sample container 2111 from the hard sample container 2111, the soft sample container 2111 and the micro cup sample container 2111 through different detection parameters detected by the detection component;

[0239] For another example, taking the target sample type sample container as a soft sample container 2111, in some usage scenarios, the sample analyzer needs to identify the hard sample container 2111 for subsequent operations, and needs to identify the hard sample container 2111 from other types of sample containers 2111 such as soft sample containers 2111 and micro cup sample containers 2111. During the process of the connecting member 2330 moving toward the sample position to the first position, the elastic member 2383 can be configured to be suitable for when the fifth abutment member 2320 abuts against the hard sample container 2111, the fifth abutment member 2320 can overcome the elastic force of the elastic member 2383 and retreat to the seventh position, while when abutting against the soft sample container 2111, the fifth abutment member 2320 cannot overcome the elastic force of the elastic member 2383 and basically remain in the sixth position, so that the controller can identify the hard sample container 2111 from the hard sample container 2111, the soft sample container 2111 and the micro cup sample container 2111 through the different detection parameters detected by the detection component.

[0240] In some embodiments of the present invention, the elastic member 2383 includes a first section and a second section connected to each other, the first section and the second section are extended along the movement direction of the fifth abutting member 2320, the elastic modulus of the first section is smaller than the elastic modulus of the second section, and one of the first section and the second section is connected to the connecting member 2330, so that when the fifth abutting member 2320 abuts against sample containers 2111 of different hardness, it can have different retraction displacements, thereby forming at least two seventh positions, so that different detection parameters can be output by the detection component to realize the identification of multiple types of sample containers 2111. Alternatively, the elastic member 2383 can also be provided with only one section, which can be adapted to be compressed and retracted by the fifth abutting member 2320 when the fifth abutting member 2320 abuts against a sample container 2111 of a relatively soft material, and thus can also be adapted to have different retraction displacements when the fifth abutting member 2320 abuts against sample containers 2111 of different hardness, thereby forming at least two seventh positions. When the fifth abutment member 2320 abuts against the hard sample container 2111 and has a need for tightening, the elastic member 2383 can be configured as a structure with a larger elastic modulus. Therefore, when the current sample container 2111 is a soft sample container 2111, the fifth abutment member 2320 does not retract relative to the connecting member 2330, so that the detection component can detect the output detection parameters to reflect the retraction of the fifth abutment member 2320 to identify whether the current sample container 2111 is a hard sample container 2111, so as to meet the tightening demand for the hard sample container 2111 and facilitate subsequent corresponding processing.

[0241] In some embodiments, reference Fig.29 The elastic member 2383 is a compression spring, the connecting member 2330 is provided with a through hole, a limiting structure is provided between the connecting member 2330 and the fifth abutting member 2320, the limiting structure includes a limiting element 2386 and a guiding element 2387, the limiting element 2386 is located on the side of the connecting member 2330 away from the fifth abutting member 2320 and can abut against the connecting member 2330, thereby limiting the compression spring between the fifth abutting member 2320 and the connecting member 2330, the compression spring is sleeved on the outer periphery of the guiding element 2387, and the two ends of the compression spring abut against the fifth abutting member 2320 and the connecting member 2330 respectively. When the fifth abutment 2320 retreats relative to the connection member 2330, the guide element 2387 is pushed to move along the through hole of the connection member 2330 toward the direction of the fifth abutment 2320 retreating, and the compression spring is further compressed; in the process of the fourth driving member 2310 driving the connection member 2330 away from the sample position, the elastic force of the compression spring causes the fifth abutment 2320 to rebound. The guide element 2387 is extended along the movement direction of the fifth abutment 2320, one end of the guide element 2387 is connected to the fifth abutment 2320, and the other end passes through the through hole and is connected to the limiting element 2386, and the guide element 2387 realizes the limiting and guiding of the compression spring.

[0242] In some embodiments, the sample analyzer further includes a cover opening mechanism, and when the type of the sample container 2111 is the target type (e.g., a hard sample container 2111), the fifth abutment member 2320 is located at the seventh position. The controller is at least used to control the cover opening mechanism to open the cover of the target type sample container 2111 to remove the container cover of the sample container 2111, so as to facilitate subsequent sampling processing, when the type of the sample container 2111 at the sample position is determined to be the target type according to the detection parameters output by the detection component. The sample analyzer of this embodiment can identify the type of the sample container 2111 at the same station and perform the cover opening operation on the sample container 2111 determined as the target type through the cover opening mechanism after the identification is completed. It can also identify the type of the sample container 2111 and perform the cover opening operation of the cover opening mechanism at different stations, that is, after the type is identified, the sample is transported to another station through the sample transport mechanism, and the cover opening operation of the cover opening mechanism is controlled after the target type sample container 2111 is pressed against by a fixing mechanism provided separately.

[0243] In some embodiments, the sample analyzer also includes a sample transport mechanism, which is arranged at the sample position and is used to transport a sample rack 2100, and the sample rack 2100 is used to carry multiple sample containers 2111. The controller is used to control the sample transport mechanism to transport the multiple sample containers 2111 carried on the sample component and move them to positions corresponding to the fifth abutment 2320 in sequence. When the type of the sample container 2111 is the target type, the controller controls the cover opening mechanism to remove the container cover of the sample container 2111. When the type of the sample container 2111 is not the target type, the controller controls the sample transport mechanism to continue to transport the next sample container 2111 and move it to a position corresponding to the fifth abutment 2320.

[0244] In some embodiments, the sample analyzer further includes a sample dispensing mechanism, a reagent dispensing mechanism, a mixing mechanism, a reaction mechanism, and a measuring mechanism. The sample dispensing mechanism is used to absorb the sample in the sample container 2111 and discharge it into the reaction cup. The reagent dispensing mechanism is used to absorb the reagent and discharge it into the reaction cup. The mixing mechanism is used to mix the reaction liquid in the reaction cup, and the reaction liquid is at least formed by mixing the sample and the reagent. The reaction mechanism is used to place the reaction cup and incubate the reaction liquid in the reaction cup. The measuring mechanism is used to measure the reaction liquid after incubation to obtain the detection result of the sample.

[0245] The controller is used to control the sample dispensing mechanism to absorb the sample in the sample container 2111 and discharge it into the reaction cup after the cover opening mechanism performs the cover opening operation on the target type sample container 2111. For example, the sample dispensing mechanism may include a sample needle and a first displacement mechanism for driving the sample needle to move, and the first displacement mechanism may be set as a two-dimensional or three-dimensional displacement platform. Driven by the first displacement mechanism, the sample needle can move to the opened sample container 2111 and absorb the sample inside the sample container 2111; after absorbing the sample, the sample needle moves to the reaction cup to be loaded with the sample under the drive of the first displacement mechanism, and then discharges the sample into the reaction cup.

[0246] The controller is used to control the reagent dispensing mechanism to absorb the reagent and discharge it into the reaction cup. For example, the reagent dispensing mechanism may include a reagent needle and a second displacement mechanism for driving the reagent needle to move, and the second displacement mechanism may be set as a two-dimensional or three-dimensional displacement platform. Driven by the second displacement mechanism, the reagent needle can move to the reaction cup to be added with the reagent; then, the reagent needle discharges the reagent into the reaction cup. The reagent discharged by the reagent needle can be drawn from a container for storing the reagent of the reagent dispensing mechanism.

[0247] The controller is used to control the mixing mechanism to mix the reaction liquid in the reaction cup so that the sample and the reagent are fully mixed. The reaction liquid is at least a mixture of the sample and the reagent. The mixing mechanism can fix the reaction cup and drive the reaction cup to perform periodic motion, thereby achieving mixing of the reaction liquid.

[0248] The controller is used to control the reaction mechanism to place the reaction cup and incubate the reaction liquid in the reaction cup. The reaction mechanism has at least one placement position for placing the reaction cup, and after mixing, the reaction cup will be placed in the reaction mechanism.

[0249] The controller is used to control the detection mechanism to measure the reaction solution after incubation, so as to obtain the detection result. For example, the detection mechanism includes an instrument for measuring a certain component; for another example, the detection mechanism includes a light measuring component, which detects the luminous intensity of the reaction solution so that the detection mechanism can calculate the concentration of the component to be measured in the sample.

[0250] In one embodiment, the sample analyzer may further include a fixing mechanism. In a scheme where the identification of the type of the sample container 2111 and the opening operation of the opening mechanism are performed at different stations, for example, an identification station and an opening station are respectively provided, and the fixing mechanism is used to fix the sample container 2111 at the opening station. The fixing mechanism may be provided with a plurality of sample positions for placing the sample container 2111, and the fixing mechanism may clamp the sample container 2111 to fix the sample container 2111. After the fixing mechanism fixes the sample container 2111, the opening mechanism may clamp the container cover and pull the container cover upward, thereby separating the container cover from the sample container 2111.

[0251] See also Figure 27-Figure 39 The sixth aspect of the present invention is a sample analyzer, a sample position, a fourth driving member 2310, a motion mechanism 2300, and a detection component; the sample position is used to place a sample container 2111, and the sample container 2111 is used to accommodate the sample; the motion mechanism 2300 includes a fifth abutment member 2320, a connecting member 2330 and an elastic member 2383, the elastic member 2383 is connected between the fifth abutment member 2320 and the connecting member 2330, and the end of the connecting member 2330 away from the fifth abutment member 2320 is connected to the fourth driving member 2310, so as to pass through the fourth driving member 2310 The connecting member 2330 is driven to move to the fifth position. When the connecting member 2330 is in the fifth position, the fifth abutting member 2320 is located at the sixth position relative to the connecting member 2330 and the free end is located at the position where the sample container 2111 is located. Under the action of external force, the fifth abutting member 2320 in the sixth position retreats from the sixth position to the seventh position relative to the connecting member 2330. The seventh position is located between the sixth position and the fifth position. The detection component is used to output detection parameters. When the fifth abutting member 2320 is located at the sixth position and the seventh position, the detection parameters output by the detection component are different. Therefore, the type of the sample container 2111 at the sample position can be determined by the controller according to the detection parameters output by the detection component.

[0252] In some embodiments, the detection component may include an optical coupling sensor 2400 and a shielding member 2410, one of the optical coupling sensor 2400 and the shielding member 2410 is connected to the fifth abutment 2320, and the other is connected to the connecting member 2330 or fixed on the frame, wherein when the fifth abutment 2320 is located at the sixth position, the shielding member 2410 shields the optical coupling sensor 2400, and when the fifth abutment 2320 is located at the seventh position, the optical coupling sensor 2400 and the shielding member 2410 are staggered; or, when the fifth abutment 2320 is located at the sixth position, the shielding member 2410 and the optical coupling sensor 2400 are staggered, and when the fifth abutment 2320 is located at the seventh position, the shielding member 2410 shields the optical coupling sensor 2400, and the optical coupling sensor 2400 is used to detect whether the fifth abutment 2320 is located at the seventh position. The optical coupling sensor 2400 may detect and output detection parameters having different categories, and thus, the type of the sample container 2111 of the sample position may be determined by the controller based on the category of the detection parameter.

[0253] Alternatively, the detection component may be a distance sensor, which is connected to the connection member 2330 or the fifth abutment member 2320, and is used to detect the distance between the connection member 2330 and the fifth abutment member 2320; or, the detection component may be a displacement sensor, which is connected to the connection member 2330 or the fifth abutment member 2320, and is used to detect the relative displacement between the connection member 2330 and the fifth abutment member 2320. Thus, when the fifth abutment member 2320 is located at the sixth position and the seventh position, the distance sensor or the displacement sensor may detect and output detection parameters in different parameter ranges, and thus, the type of the sample container 2111 at the sample position may be determined by the controller based on the parameter range of the detection parameter.

[0254] In some embodiments of the present invention, the sample analyzer further comprises a sample transport mechanism, a cover opening mechanism, a sample dispensing mechanism, a reagent dispensing mechanism, a mixing mechanism, a reaction mechanism and a measuring mechanism; the sample transport mechanism is arranged at the sample position, and is used to transport the sample rack 2100, and the sample rack 2100 is used to carry a plurality of sample containers 2111, and the sample transport mechanism is used to transport the plurality of sample containers 2111 carried on the sample rack 2100 to positions corresponding to the fifth abutment member 2320 in sequence, and the detection component is used to output detection parameters when the fourth driving member 2310 drives the connecting member 2330 to move to the fifth position, and the detection parameters are used to determine that the sample container 2111 corresponding to the fifth abutment member 2320 is a target type;

[0255] The cover opening mechanism is used to remove the container cover of the sample container 2111 when the sample container 2111 at the sample position is not of the target type, while the fifth abutting member 2320 abuts against the sample container 2111 .

[0256] The sample dispensing mechanism is used to absorb the sample in the sample container 2111 and discharge it into the reaction cup. For example, the sample dispensing mechanism may include a sample needle and a first displacement mechanism for driving the sample needle to move, and the first displacement mechanism may be set as a two-dimensional or three-dimensional displacement platform. Driven by the first displacement mechanism, the sample needle can move to the opened sample container 2111 and absorb the sample inside the sample container 2111; after absorbing the sample, the sample needle moves to the reaction cup to be loaded with the sample under the drive of the first displacement mechanism, and then discharges the sample into the reaction cup.

[0257] The reagent dispensing mechanism is used to absorb the reagent and discharge it into the reaction cup. For example, the reagent dispensing mechanism may include a reagent needle and a second displacement mechanism for driving the reagent needle to move, and the second displacement mechanism may be set as a two-dimensional or three-dimensional displacement platform. Driven by the second displacement mechanism, the reagent needle can move to the reaction cup to be added with the reagent; then, the reagent needle discharges the reagent into the reaction cup. The reagent discharged by the reagent needle can be drawn from a container for storing the reagent of the reagent dispensing mechanism.

[0258] The mixing mechanism is used to mix the reaction liquid in the reaction cup so that the sample and the reagent are fully mixed. The reaction liquid is at least a mixture of the sample and the reagent. The mixing mechanism can fix the reaction cup and drive the reaction cup to perform periodic motion, thereby achieving mixing of the reaction liquid.

[0259] The reaction mechanism is used to place the reaction cup and incubate the reaction liquid in the reaction cup. The reaction mechanism has at least one placement position for placing the reaction cup. After mixing, the reaction cup will be placed in the reaction mechanism.

[0260] The detection mechanism is used to measure the reaction solution after incubation to obtain the detection result. For example, the detection mechanism includes an instrument for measuring a certain component; for another example, the detection mechanism includes a light measuring component, which detects the luminous intensity of the reaction solution so that the detection mechanism can calculate the concentration of the component to be measured in the sample.

[0261] It can be seen from the above embodiments that the sample analyzer of the embodiment of the present invention can be used to identify different types of sample containers 2111. The sample type can be identified through a simple mechanical structure and detection feedback. It has the advantages of simple structure, easy implementation, low cost and high safety.

[0262] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0263] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0264] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0265] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A sample analyzer, characterized in that: It includes a containing mechanism and a cover opening mechanism, wherein the containing mechanism is used to contain the sample container; the cover opening mechanism includes: Bracket; A clamping member, movably connected to the bracket, the clamping member comprises a first clamping arm and a second clamping arm, the first clamping arm and the second clamping arm are used to clamp the container cover on the sample container together, the clamping member has a clamping state for clamping the container cover and an open state for releasing the container cover, the clamping member has a first position in which the container cover is on the sample container in the clamping state, and a second position in which the container cover is pulled away from the sample container in the clamping state, the clamping member also has a third position in the open state, and the second position is located between the first position and the third position; a first driving member connected to the support, the first driving member driving the clamping member to move at least between the first position and the second position and between the second position and the third position relative to the support, the container cover on the sample container being pulled away from the sample container during the movement of the clamping member from the first position to the second position; and A first abutment is connected to the bracket, and the clamping member is away from the first abutment when in the first position. During the process of the clamping member moving from the first position to the second position and from the second position to the third position, the clamping member gradually approaches the first abutment from away from the first abutment until at least one of the first clamping arm and the second clamping arm abuts against the first abutment, and the abutment causes the first clamping arm and the second clamping arm to move relative to each other, so that the clamping member is in the open state at the third position.

2. The sample analyzer according to claim 1, characterized in that: The first abutment member is fixedly connected to the bracket.

3. The sample analyzer according to claim 1, wherein: The first position is located below the second position, the second position is located below the third position, and the first driving member drives the clamping member to move between the first position and the second position and between the second position and the third position along a straight line in the vertical direction.

4. The sample analyzer according to claim 1, wherein: The clamping member includes a base, and the first clamping arm and / or the second clamping arm are hinged to the base. During the process of the clamping member moving from the second position to the third position, at least one of the first clamping arm and the second clamping arm abuts against the first abutment member, so that the clamping arm abutting against the first abutment member rotates relative to the base, thereby placing the clamping member in an open state.

5. The sample analyzer according to claim 4, characterized in that: The first clamping arm is hinged to the base, and the first clamping arm abuts against the first abutment member so that the first clamping arm rotates relative to the base, wherein: The first clamping arm includes a first support arm and a second support arm connected to each other, the first support arm is used to clamp the container cover, and the second support arm is hinged to the base; when the clamping member moves from the second position to the third position, the second support arm abuts against the first abutment member.

6. The sample analyzer according to claim 5, characterized in that: The second position is located below the third position; the first support arm is extended in the vertical direction, the second support arm includes a first section extending in the horizontal direction and a second section extending in the vertical direction, the upper end of the first support arm is connected to the second section, the first section is hinged to the base, the first abutment is arranged above the first section and during the process of the clamping member moving from the second position to the third position, the first section abuts against the first abutment.

7. The sample analyzer according to claim 1, wherein: The first abutment member includes a first roller, and at least one of the first clamping arm and the second clamping arm abuts against the first roller and rolls relative to the first roller.

8. The sample analyzer according to claim 1, wherein: The cover opening mechanism also includes: a first recovery member, the first recovery member being used to recover the container cover released by the clamping member; A guide member, wherein the guide member comprises a transmission part and a guide part, the first driving member is in transmission connection with the transmission part to drive the transmission part to move, and the movement of the transmission part drives the guide part to move between an avoidance position and a guide position; when the guide part is in the avoidance position, the guide part is located outside a movement path of the clamping member from the first position to the second position, and when the guide part is in the guide position, the guide part is located below the clamping member to guide the container cover released by the clamping member to the first recovery member; Wherein, when the clamping member is located at the third position, the guide portion is at the guide position, and when the clamping member is located between the first position and the second position, the guide portion is at the avoidance position.

9. The sample analyzer according to claim 8, characterized in that: The cover opening mechanism also includes a second abutment member arranged on the clamping member. When the first driving member drives the clamping member to move from the second position to the third position, the second abutment member abuts against the transmission part to drive the transmission part to move. The movement of the transmission part drives the guide part to move from the avoidance position to the guide position.

10. The sample analyzer according to claim 9, characterized in that: The transmission part is hinged to the bracket, and the second abutment member includes a second roller, which is used to abut the transmission part and roll relative to the transmission part; when the guide part is in the avoidance position, the surface of the transmission part abutting against the second roller is inclined from bottom to top in the direction of the second roller, or the transmission part as a whole is inclined from bottom to top in the direction of the second roller.

11. The sample analyzer according to claim 9, characterized in that: The first abutment member abuts against the first clamping arm, the second abutment member is arranged on a side of the second clamping arm away from the first clamping arm, and the guide portion is arranged on a side of the second abutment member away from the second clamping arm.

12. The sample analyzer according to claim 8, wherein: The first recovery member is located below the clamping member, the guide portion includes a guide surface for guiding the container cover released by the clamping member, and when the guide portion is in the guiding position, the guide surface is located below the clamping member and tilted downward.

13. The sample analyzer according to claim 8, characterized in that: The guide portion is provided with a concave cavity. When the guide portion is in the guide position, the opening of the concave cavity is located below the container cover clamped by the clamping member. The opening size of the concave cavity is configured so that the container cover cannot enter the concave cavity.

14. The sample analyzer according to claim 1, wherein: The first position is located below the second position, the second position is located below the third position, and the first driving member drives the clamping member to move between the first position and the second position and between the second position and the third position along a straight line in the vertical direction; The cover opening mechanism also includes: A first sliding block is slidably connected to the bracket, and the first driving member drives the first sliding block to slide in a vertical direction; a second slider, slidably connected to the bracket and capable of sliding in a vertical direction, the second slider being located above the first slider, the second slider being connected to the clamping member, and when the first driving member drives the first slider to move upward, the first slider abuts against the second slider to drive the clamping member to move upward to the third position, and when the first driving member stops driving, the clamping member slides to the first position with the second slider under the action of gravity; a sensor configured to generate a control signal when detecting that the first slider is separated from the second slider; A first limiting member is movably connected to the clamping member and is located between the first clamping arm and the second clamping arm, the clamping member also has a pre-clamping state before clamping the container cover, the clamping member also has a fourth position in the pre-clamping state and the container cover is on the sample container, the fourth position is located between the first position and the second position, when the clamping member moves downward to the fourth position, the first limiting member abuts between the second slider and the container cover of the sample container, so that when the first limiting member moves downward to the first position, under the abutment of the first limiting member, the second slider moves upward relative to the first slider, so that the first slider is separated from the second slider; The controller is configured to control the first driving member to drive the first slider to slide upward after obtaining the control signal during the process of controlling the first driving member to drive the first slider to slide downward, so as to drive the clamping member to move from the first position to the second position and then to the third position.

15. The sample analyzer according to claim 1, wherein: The clamping member includes a base, the first clamping arm is hinged to the base, the center of gravity of the first clamping arm is located below the rotation center of the first clamping arm, and a line connecting the center of gravity of the first clamping arm and the rotation center of the first clamping arm is an oblique line extending from top to bottom and toward the second clamping arm; And / or, the second clamping arm is hinged to the base, the center of gravity of the second clamping arm is located below the rotation center of the second clamping arm, and the line connecting the center of gravity of the second clamping arm and the rotation center of the second clamping arm is an oblique line extending from top to bottom in the direction of the first clamping arm.

16. The sample analyzer according to claim 15, characterized in that: The clamping member includes a base, and the clamping member also includes an elastic member, and the elastic member is connected between at least one of the first clamping arm and the second clamping arm and the base.

17. The sample analyzer according to claim 1, wherein: The accommodating mechanism includes a placement position for placing the sample container, a second limiting member is provided on one side of the placement position, and a third abutting member is provided on the other side; the sample analyzer also includes a second driving member drivingly connected to the third abutting member, and the second driving member drives the third abutting member to move in a horizontal direction to clamp the sample container in the placement position between the third abutting member and the second limiting member.

18. The sample analyzer according to claim 1, wherein: The sample analyzer also includes: A sample input and output mechanism, the sample input and output mechanism comprising an input module and an output module; A sample analysis mechanism, used for analyzing and processing the sample in the sample container; A transmission mechanism, used to transmit the sample container provided by the input module to the sample analysis mechanism, and to transmit the sample container analyzed by the sample analysis mechanism to the output module; The accommodating mechanism is located in the input module, and the transmission mechanism transmits the sample container after the cover is opened in the input module to the sample analysis mechanism; alternatively, the accommodating mechanism is separately arranged from the sample input and output mechanism, and the transmission mechanism dispatches the sample container provided by the input module to the accommodating mechanism and outputs it to the sample analysis mechanism after the cover is opened.

19. A sample analyzer, characterized in that: It includes a containing mechanism and a cover opening mechanism, wherein the containing mechanism is used to contain the sample container; the cover opening mechanism includes: Bracket; A clamping member, movably connected to the bracket, the clamping member having a clamping state for clamping the container cover and an open state for releasing the container cover, the clamping member having a first position in which the container cover is on the sample container and a second position in which the container cover is pulled away from the sample container, the clamping member also having a third position in the open state, the second position being between the first position and the third position; a first driving member connected to the support, the first driving member driving the clamping member to move at least between the first position and the second position and between the second position and the third position relative to the support, the container cover on the sample container in the accommodating mechanism being pulled away from the sample container during the movement of the clamping member from the first position to the second position; a cover-removing mechanism, wherein the clamping member releases the container cover under the action of the cover-removing mechanism during the movement of the clamping member from the second position to the third position; a first recovery member, the first recovery member being used to recover the container cover released by the clamping member; and A guide member, wherein the guide member comprises a transmission part and a guide part, the first driving member is in transmission connection with the transmission part to drive the transmission part to move, and the movement of the transmission part drives the guide part to move between an avoidance position and a guide position; when the guide part is in the avoidance position, the guide part is located outside a movement path of the clamping member from the first position to the second position, and when the guide part is in the guide position, the guide part is located below the clamping member to guide the container cover released by the clamping member to the first recovery member; Wherein, when the clamping member is located at the third position, the guide portion is at the guide position, and when the clamping member is located between the first position and the second position, the guide portion is at the avoidance position.

20. The sample analyzer according to claim 19, wherein: The sample analyzer also includes a second abutment member disposed on the clamping member. When the first driving member drives the clamping member to move from the second position to the third position, the second abutment member abuts against the transmission part to drive the transmission part to move. The movement of the transmission part drives the guide part to move from the avoidance position to the guide position.

21. The sample analyzer according to claim 20, characterized in that: The transmission part is hinged to the bracket, and the second abutment member includes a second roller, which is used to abut the transmission part and roll relative to the transmission part; when the guide part is in the avoidance position, the surface of the transmission part abutting against the second roller is inclined from bottom to top in the direction of the second roller, or the transmission part as a whole is inclined from bottom to top in the direction of the second roller.

22. The sample analyzer according to claim 19, wherein: The guide portion is provided with a concave cavity. When the guide portion is in the guide position, the opening of the concave cavity is located below the container cover clamped by the clamping member. The opening size of the concave cavity is configured so that the container cover cannot enter the concave cavity.

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