CN212845432U - In vitro diagnosis analyzer and fixing mechanism - Google Patents

Abstract

The utility model discloses an in vitro diagnostic analyzer and a fixing mechanism, the fixing mechanism comprises a taking and placing unit and a driving unit, the taking and placing unit comprises a mounting seat, at least two clamping jaws and a transmission part, at least one clamping jaw is movably arranged on the mounting seat and is matched with other clamping jaws to form an openable clamping groove, the transmission part is provided with a matching surface which is in one-to-one correspondence with the movable clamping jaw, and the transmission part is movably connected with the mounting seat; the driving unit is used for driving the mounting seat to move, and the driving unit is also used for driving the transmission piece to move, so that the matching surface is matched with the corresponding clamping jaw to open or close the clamping groove. The fixing mechanism can realize the movement of the clamping jaw, the picking and placing unit and avoid the interference on the rotation of the sample tube plate. The in vitro diagnosis analyzer adopts the fixing mechanism, and is beneficial to the miniaturization development of the in vitro diagnosis analyzer.

Description

In vitro diagnosis analyzer and fixing mechanism

Technical Field

The utility model relates to the technical field of medical equipment, especially relate to an external diagnostic analyzer and fixed establishment.

Background

An in vitro diagnostic analyzer is an apparatus capable of quantitatively or qualitatively analyzing a body fluid sample of a patient, a sample tube used by the apparatus is generally a vacuum blood collection tube or a centrifuge tube, and the sample tube is mostly in a cap state before being sent to a detection device for measurement.

At this time, an automatic uncapping mechanism is often used to complete the separation of the sample tube and the sample tube cap in the in vitro diagnostic analyzer. In this process, the sample tube needs to be fixed by a fixing mechanism. And traditional fixed establishment is applied to the analysis appearance that uses sample tube dish to carry because of structural design defect, can interfere the rotation of sample tube dish, leads to needing to design great dodge space, is unfavorable for external diagnostic analyzer's miniaturized development.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing, there is a need for an in vitro diagnostic analyzer and securing mechanism. The fixing mechanism can realize the movement of the clamping jaw, the picking and placing unit and avoid the interference on the rotation of the sample tube plate. The in vitro diagnosis analyzer adopts the fixing mechanism, and is beneficial to the miniaturization development of the in vitro diagnosis analyzer.

The technical scheme is as follows:

on one hand, the application provides a fixing mechanism, which comprises a taking and placing unit and a driving unit, wherein the taking and placing unit comprises a mounting seat, at least two clamping jaws and a transmission piece, at least one clamping jaw is movably arranged on the mounting seat and matched with other clamping jaws to form an openable clamping groove, the transmission piece is provided with matching surfaces corresponding to the movable clamping jaws one by one, and the transmission piece is movably connected with the mounting seat; the driving unit is used for driving the mounting seat to move, and the driving unit is also used for driving the transmission piece to move, so that the matching surface is matched with the corresponding clamping jaw to open or close the clamping groove.

When the fixing mechanism is used, the driving unit is used for driving the mounting seat to move firstly, namely the taking and placing unit is driven to move to a preset position, such as the upper part of the sample tube disc, so that the clamping groove corresponds to the sample tube; then, the driving unit drives the transmission part to move, so that the matching surface is matched with the corresponding clamping jaw to close the clamping groove, and the fixing mechanism is used for fixing the sample tube, so that the sample tube can be uncapped. After the related operation is finished, when the sample tube plate needs to be rotated to move, the driving unit drives the transmission part to move firstly, so that the matching surface is matched with the corresponding clamping jaw, and the clamping groove is opened; then the driving unit drives the mounting seat to move, and then drives the taking and placing unit to move, so that the taking and placing unit and the sample tube disc are staggered, and the rotation of the sample tube disc cannot be interfered. Therefore, the fixing mechanism can realize the picking and placing of the clamping jaw and the movement of the picking and placing unit, can avoid the interference on the rotation of the sample tube disc, and is favorable for optimizing the element layout of the in vitro diagnosis analyzer.

The technical solution is further explained below:

in one embodiment, the clamping jaw is slidably disposed on the mounting base, or the clamping jaw is rotatably disposed on the mounting base.

In one embodiment, the number of the clamping jaws is two, and at least one clamping jaw can be elastically reset and arranged on the mounting seat; when the clamping jaws are in the reset state, the clamping grooves are opened.

In one embodiment, both clamping jaws can be rotatably arranged on the mounting seat; correspondingly, the fitting surface is two, and the interval sets up on the driving medium, driving medium and mount pad sliding connection.

In one embodiment, two mating surfaces are provided on the driving member to form a "V" shaped groove.

In one embodiment, the mating surface is provided with a roller that abuts the jaw.

In one embodiment, the mounting base is provided with a first limiting body and a second limiting body which are arranged at intervals, and the transmission piece is connected with the mounting base in a sliding manner; the driving unit comprises a base and a first expansion piece, the base is connected with the mounting base in a sliding mode, the base is provided with a limiting piece in limiting fit with the first limiting body, the transmission piece is provided with a third limiting body in limiting fit with the second limiting body, and the expansion end of the expansion piece is connected with the transmission piece;

when the clamping jaw is elastically reset, the transmission piece can be pushed to move, so that the second limiting body is matched with the third limiting body; under the elastic action force of the clamping jaw, the first expansion piece drives the mounting seat to move first, so that the first limiting body is matched with the limiting part.

In one embodiment, when the first expansion piece is in an expansion action, the first expansion piece drives the mounting base to move, and when the first limiting body is matched with the limiting piece, the first expansion piece drives the transmission piece to move and closes the clamping groove; when the first expansion piece is in the contraction action, the clamping jaw is elastically reset and pushes the transmission piece to move, and when the second limiting body is matched with the third limiting body, the first expansion piece drives the mounting seat to move.

In one embodiment, the driving unit comprises a first power source for driving the mounting base to move telescopically and a second power source for driving the transmission member to move.

In another aspect, the present application also provides an in vitro diagnostic analyzer comprising a fixing mechanism as in any of the embodiments described above.

When the in-vitro diagnosis analyzer is used, when a sample tube uncapping action is required, the driving unit is utilized to drive the mounting seat to move, namely, the taking and placing unit is driven to move to a preset position, such as the upper part of a sample tube disc, so that the clamping groove corresponds to the sample tube; then, the driving unit drives the transmission part to move, so that the matching surface is matched with the corresponding clamping jaw to close the clamping groove, and the fixing mechanism is used for fixing the sample tube, so that the sample tube can be uncapped. After the related operation is finished, when the sample tube plate needs to be rotated to move, the driving unit drives the transmission part to move firstly, so that the matching surface is matched with the corresponding clamping jaw, and the clamping groove is opened; then the driving unit drives the mounting seat to move, and then drives the taking and placing unit to move, so that the taking and placing unit and the sample tube disc are staggered, and the rotation of the sample tube disc cannot be interfered. The in vitro diagnosis analyzer adopts the fixing mechanism, has small movement space, can be flexibly adjusted, and is beneficial to the miniaturization development of the in vitro diagnosis analyzer.

Drawings

FIG. 1 is a schematic structural view of a fixing mechanism in one embodiment;

FIG. 2 is a schematic view of the application of the securing mechanism shown in FIG. 1;

FIG. 3 is a schematic view of the fixing mechanism shown in FIG. 1 with the first retractor concealed;

fig. 4 is a schematic view of a fixing mechanism shown in another embodiment.

Description of reference numerals:

100. a pick-and-place unit; 110. a mounting seat; 112. a first position limiting body; 114. a second position limiting body; 120. a clamping jaw; 122. an elastic layer; 130. a transmission member; 132. a mating surface; 134. a roller; 136. a third limiting body; 140. a clamping groove; 200. a drive unit; 210. a base; 212. a limiting member; 220. a first retractor; 230. a first power source; 240. a second power source; 300. and (5) sampling the sample tube.

Description of the drawingsthe accompanying drawings, which form a part of the present application, serve to provide a further understanding of the invention, and the exemplary embodiments and descriptions thereof are provided for purposes of explanation and are not intended to constitute undue limitations on the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and fig. 2, in this embodiment, a fixing mechanism is provided, which includes a pick-and-place unit 100 and a driving unit 200, the pick-and-place unit 100 includes a mounting base 110, at least two clamping jaws 120, and a transmission member 130, at least one clamping jaw 120 is movably disposed on the mounting base 110 and is matched with the other clamping jaws 120 to form an openable clamping groove 140, the transmission member 130 has a matching surface 132 corresponding to the movable clamping jaw 120 one by one, and the transmission member 130 is movably connected to the mounting base 110; the driving unit 200 is used for driving the mounting base 110 to move, and the driving unit 200 is further used for driving the transmission member 130 to move, so that the matching surface 132 is matched with the corresponding clamping jaw 120 to open or close the clamping groove 140.

When the fixing mechanism is used, the driving unit 200 is used to drive the mounting base 110 to move, that is, the taking and placing unit 100 is driven to move to a preset position, such as above the sample tube tray, so that the clamping groove 140 corresponds to the sample tube 300; then, the driving unit 200 drives the transmission member 130 to move, so that the matching surface 132 matches with the corresponding clamping jaw 120, the clamping groove 140 is closed, and the sample tube 300 is fixed by the fixing mechanism, so that the sample tube 300 can be uncapped. After the related operations are completed, when the sample tube plate needs to be rotated to move, the driving unit 200 drives the transmission member 130 to move, so that the matching surface 132 is matched with the corresponding clamping jaw 120, and the clamping groove 140 is opened; then, the driving unit 200 drives the mounting base 110 to move, and further drives the pick-and-place unit 100 to move, so that the pick-and-place unit 100 is staggered with the sample tube tray, and further the rotation of the sample tube tray is not interfered. Thus, the fixing mechanism can realize the taking and placing of the clamping jaw 120 and the movement of the taking and placing unit 100, can avoid the interference of the rotation of the sample tube plate, and is favorable for optimizing the element layout of the in vitro diagnostic analyzer.

It should be noted that, the term "the transmission member 130 is movably connected to the mounting base 110" includes, but is not limited to, a rotational connection and a sliding connection. For example, when the transmission member 130 is rotatably connected to the mounting base 110, the transmission member 130 may be an eccentric structure such as a cam, so that the engagement surface 132 can drive the clamping jaw 120 to rotate or move. In this case, the output power of the driving unit 200 is rotational power, and includes a device directly supplying rotational power such as a servo motor and a rotary hydraulic cylinder, and also includes other devices indirectly supplying rotational power. The above can be realized in the prior art, and the details are not repeated herein.

For example, when the transmission member 130 is slidably connected to the mounting base 110, the transmission member 130 can directly or indirectly drive the clamping jaw 120 to rotate or move through the matching surface 132. At this time, the output power of the driving unit 200 is a telescopic power, and includes, but is not limited to, directly driven power devices such as a telescopic stick, a telescopic plate, a telescopic rod, a pneumatic rod, a hydraulic rod, a linear motor, and the like, and further includes a mechanism for indirectly realizing the reciprocating movement of the transmission member 130 by using a rack-and-pinion mechanism, a lead screw nut mechanism, and the like.

The term "movable" of the mount 110 includes rotation and movement, and the taking and placing unit 100 may be displaced from the sample tube tray. The "driving unit 200" may adopt any existing driving device capable of driving the movable mounting base 110 to move, including but not limited to a pneumatic cylinder, a hydraulic cylinder, a linear motor, a servo motor and other directly driven power devices, and also including indirectly driven devices, such as a servo motor + a telescopic mechanism; a linear motor and a swing rod mechanism, and the like.

In addition to the above embodiments, in one embodiment, the clamping jaw 120 is slidably disposed on the mounting base 110. In this manner, the movable jaws 120 may slide to open or close the clamp slot 140, and thus may utilize the telescopically movable mating surfaces 132 to effect movement of the jaws 120.

Or as shown in fig. 1 and 3, in another embodiment, the clamping jaw 120 is rotatably disposed on the mounting base 110. In this manner, the movable jaw 120 may be rotated to open or close the jaw slot 140, and thus the movement of the jaw 120 may be accomplished using the rotating mating surface 132.

On the basis of any of the above embodiments, as shown in fig. 1 to 3, in one embodiment, there are two clamping jaws 120, and at least one clamping jaw 120 is elastically resettable on the mounting base 110; when the jaws 120 are in the reset condition, the clip slots 140 are open. Thus, the clamping jaw 120 can be automatically reset to automatically open the clamping slot 140, so that the pick-and-place unit 100 does not drag the sample tube 300 when moving.

The specific implementation of the "elastically resettable" of the clamping jaw 120 can be realized in the prior art, for example, the rotatable resetting of the clamping jaw 120 is realized by using a torsion spring, or the sliding resetting of the clamping jaw 120 is realized by using a tension spring, which is not described in detail herein.

Specifically, the jaw 120 is provided with a groove, the inner wall of which is provided with an elastic layer 122. The resilient layers 122 of the two jaws 120 cooperate to form a clip groove 140. Thus, the elastic layer 122 can elastically buffer and press-fit with the sample tube 300, so as to avoid rigid collision and damage to the sample tube 300.

On the basis of the above embodiments, as shown in fig. 1 to 3, in one embodiment, both the clamping jaws 120 can be rotatably disposed on the mounting base 110; correspondingly, there are two matching surfaces 132, and the two matching surfaces are disposed on the transmission member 130 at intervals. Thus, the driving unit 200 drives the transmission member 130 to slide, so that the two mating surfaces 132 are engaged with the clamping jaws 120 to open or close the clamping grooves 140, thereby simplifying the transmission relationship between the driving unit 200 and the transmission member 130 and improving the transmission reliability.

Specifically, the two clamping jaws 120 are disposed on the mounting base 110 through a rotating shaft, and a torsion spring is disposed between the two clamping jaws 120.

Based on the above embodiments, in an alternative embodiment, two mating surfaces 132 are disposed on the transmission member 130 to form a "V" shaped groove. Thus, during the movement of the transmission member 130, the two fitting surfaces 132 "V" shaped grooves are used to press the clamping jaws 120, so that the clamping jaws 120 gradually contract and the clamping grooves 140 are closed; so that the clamping groove 140 and the sample tube 300 can be more stably matched. During the opening of the clamping groove 140, the driving member 130 can be pushed to move back under the elastic restoring force.

Alternatively, as shown in fig. 1-3, in one embodiment, the mating surface 132 is provided with a roller 134 that abuts the jaw 120. Thus, the roller 134 is used to cooperate with the clamping jaw 120, so as to reduce friction, which is beneficial to improving the service life and reliability of the pick-and-place unit 100.

On the basis of any one of the above embodiments in which the two clamping jaws 120 are rotatable, as shown in fig. 1 to 3, in one embodiment, the mounting base 110 is provided with a first position-limiting body 112 and a second position-limiting body 114 which are arranged at an interval, and the transmission member 130 is slidably connected with the mounting base 110; the driving unit 200 includes a base 210 and a first expansion piece 220, the base 210 is slidably connected to the mounting base 110, the base 210 is provided with a limiting piece 212 that is in limiting fit with the first limiting body 112, the transmission piece 130 is provided with a third limiting body 136 that is in limiting fit with the second limiting body 114, and the expansion end of the expansion piece is connected to the transmission piece 130. When the clamping jaw 120 is elastically reset, the transmission member 130 can be pushed to move, so that the second position-limiting body 114 is matched with the third position-limiting body 136; under the elastic force of the clamping jaw 120, the first expansion piece 220 drives the mounting base 110 to move first, so that the first position-limiting body 112 is matched with the position-limiting piece 212. Thus, in the process of opening the clamping groove 140, the elastic restoring force of the clamping jaw 120 is utilized to move the transmission member 130 first, that is, the clamping groove 140 is opened first, so that the taking and placing unit 100 is separated from the sample tube 300; then, the pick-and-place unit 100 moves along with the mounting base 110; in the process of closing the clamping groove 140, the first expansion piece 220 drives the mounting base 110 to move by using the elastic force of the clamping jaw 120, so that the taking and placing unit 100 moves to the preset position, the sample tube 300 is disposed in the clamping groove 140, and after the first position-limiting body 112 is matched with the position-limiting piece 212, the first expansion piece 220 drives the transmission piece 130 to move, so that the clamping groove 140 is closed, and the sample tube 300 is clamped. In the process, the moving of the taking and placing unit 100 and the opening and closing of the clamping groove 140 can be realized by only one power, and the actions are higher in synchronism and simpler to control by utilizing mechanical linkage control, so that the volume of the fixing mechanism is favorably reduced, and the production and manufacturing cost is reduced.

Further, on the basis of the above embodiment, when the first expansion piece 220 is in the extending action, the first expansion piece 220 drives the mounting base 110 to move first, and when the first position-limiting body 112 is matched with the position-limiting member 212, the first expansion piece 220 drives the transmission member 130 to move, and the clamping groove 140 is closed; when the first expansion piece 220 is in the contraction action, the clamping jaw 120 is elastically restored and pushes the transmission member 130 to move, and when the second position-limiting body 114 is matched with the third position-limiting body 136, the first expansion piece 220 drives the mounting base 110 to move. Thus, the first expansion piece 220 is in an extending action, that is, in the process of closing the clamping groove 140, the elastic force of the clamping jaw 120 is utilized to make the first expansion piece 220 drive the mounting base 110 to move first, so that the pick-and-place unit 100 moves to a preset position, the sample tube 300 is disposed in the clamping groove 140, and after the first limiting body 112 is matched with the limiting part 212, the first expansion piece 220 drives the transmission member 130 to move, so that the clamping groove 140 is closed, and the sample tube 300 is clamped. When the first expansion piece 220 is in the contraction action, that is, in the process of opening the clamp groove 140, the elastic restoring force of the clamping jaw 120 is utilized to make the transmission piece 130 move first, that is, open the clamp groove 140 first, so that the taking and placing unit 100 is separated from the sample tube 300; when the second position-limiting body 114 is engaged with the third position-limiting body 136, the first expansion device 220 drives the mounting base 110 to move, so that the pick-and-place unit 100 moves along with the mounting base 110 to perform resetting and is staggered with the sample tube plate.

Specifically, the "transmission member 130" is slidably connected to the "mounting seat 110" through a sliding rail; the "mounting seat 110" is slidably connected to the "base 210" via a slide rail. Thus, the movement of the transmission member 130 and the mounting base 110 is more stable and precise.

It should be noted that the "first expansion device 220" includes, but is not limited to, directly driven power devices such as an expansion stick, an expansion plate, an expansion link, a pneumatic link, a hydraulic link, and a linear motor, and further includes a mechanism that indirectly realizes the reciprocating movement of the transmission member 130 by using a rack-and-pinion mechanism, a lead screw nut mechanism, and the like.

Of course, in another embodiment, as shown in fig. 4 and combined with the pick-and-place unit 100 of fig. 3, the driving unit 200 includes a first power source 230 for driving the mounting base 110 to move telescopically, and a second power source 240 for driving the transmission member 130 to move. In this way, the first power source 230 may be used to realize the movement of the pick-and-place unit 100, and the second power source 240 may realize the movement of the transmission member 130, so that the transmission structure between the two is simpler. Meanwhile, the two powers can be independently controlled, and the motion tracks of the pick-and-place unit 100 and the transmission member 130 can be flexibly set. For example, the pick-and-place unit 100 moves longitudinally + the transmission member 130 rotates or extends, or the pick-and-place unit 100 moves horizontally + the transmission member 130 rotates or extends, so that the selection can be performed according to actual requirements.

It should be noted that, any existing driving device that can drive the movable mounting base 110 to move may be adopted as the "first power source 230", including but not limited to a pneumatic cylinder, a hydraulic cylinder, a linear motor, a servo motor and other directly driven power devices, and also including devices that indirectly drive, such as a servo motor + a telescopic mechanism; linear electric motor + pendulum rod mechanism.

Similarly, the "second power source 240" may be any existing driving device capable of driving the movable mounting base 110 to move, including but not limited to a pneumatic cylinder, a hydraulic cylinder, a linear motor, a servo motor and other directly driven power devices, and also including indirectly driven devices, such as a servo motor + a telescopic mechanism; linear electric motor + pendulum rod mechanism.

In one embodiment, there is also provided an in vitro diagnostic analyzer comprising a securing mechanism as in any of the embodiments above.

When the in vitro diagnostic analyzer is used, when the uncapping action of the sample tube 300 needs to be performed, the driving unit 200 is utilized to drive the mounting seat 110 to move, that is, the taking and placing unit 100 is driven to move to a preset position, such as the upper part of a sample tube tray, so that the clamping groove 140 corresponds to the sample tube 300; then, the driving unit 200 drives the transmission member 130 to move, so that the matching surface 132 matches with the corresponding clamping jaw 120, the clamping groove 140 is closed, and the sample tube 300 is fixed by the fixing mechanism, so that the sample tube 300 can be uncapped. After the related operations are completed, when the sample tube plate needs to be rotated to move, the driving unit 200 drives the transmission member 130 to move, so that the matching surface 132 is matched with the corresponding clamping jaw 120, and the clamping groove 140 is opened; then, the driving unit 200 drives the mounting base 110 to move, and further drives the pick-and-place unit 100 to move, so that the pick-and-place unit 100 is staggered with the sample tube tray, and further the rotation of the sample tube tray is not interfered. The in vitro diagnosis analyzer adopts the fixing mechanism, has small movement space, can be flexibly adjusted, and is beneficial to the miniaturization development of the in vitro diagnosis analyzer.

The "certain body" and the "certain portion" may be a part corresponding to the "member", that is, the "certain body" and the "certain portion" may be integrally formed with the other part of the "member"; the "part" can be made separately from the "other part" and then combined with the "other part" into a whole. The expressions "a certain body" and "a certain part" in the present application are only one example, and are not intended to limit the scope of the present application for reading convenience, and the technical solutions equivalent to the present application should be understood as being included in the above features and having the same functions.

It should be noted that, the components included in the "unit", "assembly", "mechanism" and "device" of the present application can also be flexibly combined, i.e., can be produced in a modularized manner according to actual needs, so as to facilitate the modularized assembly. The division of the above-mentioned components in the present application is only one example, which is convenient for reading and is not a limitation to the protection scope of the present application, and the same functions as the above-mentioned components should be understood as equivalent technical solutions in the present application.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to," "disposed on," "secured to," or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, when one element is considered as "fixed transmission connection" with another element, the two elements may be fixed in a detachable connection manner or in an undetachable connection manner, and power transmission can be achieved, such as sleeving, clamping, integrally-formed fixing, welding and the like, which can be achieved in the prior art, and is not cumbersome. When an element is perpendicular or nearly perpendicular to another element, it is desirable that the two elements are perpendicular, but some vertical error may exist due to manufacturing and assembly effects. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A securing mechanism, comprising:

the device comprises a taking and placing unit, a clamping mechanism and a clamping mechanism, wherein the taking and placing unit comprises an installation base, at least two clamping jaws and a transmission piece, at least one clamping jaw is movably arranged on the installation base and matched with other clamping jaws to form an openable clamping groove, the transmission piece is provided with a matching surface which is in one-to-one correspondence with the movable clamping jaws, and the transmission piece is movably connected with the installation base; and

and the driving unit is used for driving the mounting seat to move, and is also used for driving the transmission piece to move, so that the matching surface is matched with the corresponding clamping jaw to open or close the clamping groove.

2. A fastening mechanism as claimed in claim 1, wherein the clamping jaws are slidably arranged on the mounting base or the clamping jaws are rotatably arranged on the mounting base.

3. The fixing mechanism according to claim 1, wherein the number of the clamping jaws is two, and at least one clamping jaw is elastically resettable on the mounting seat; when the clamping jaws are in the reset state, the clamping grooves are opened.

4. A securing mechanism according to claim 3, wherein both of said jaws are rotatably mounted on said mounting; correspondingly, the number of the matching surfaces is two, the matching surfaces are arranged on the transmission piece at intervals, and the transmission piece is connected with the mounting seat in a sliding mode.

5. A fastening mechanism according to claim 4 wherein the two engagement surfaces are provided on the drive member to form a "V" shaped groove.

6. A securing mechanism according to claim 4, characterised in that the mating surface is provided with rollers which abut the jaws.

7. The fixing mechanism according to any one of claims 3 to 6, wherein the mounting base is provided with a first limiting body and a second limiting body which are arranged at intervals, and the transmission member is slidably connected with the mounting base; the driving unit comprises a base and a first expansion piece, the base is connected with the mounting base in a sliding mode, the base is provided with a limiting piece in limiting fit with the first limiting body, the transmission piece is provided with a third limiting body in limiting fit with the second limiting body, and the expansion end of the expansion piece is connected with the transmission piece;

when the clamping jaw is elastically reset, the transmission piece can be pushed to move, so that the second limiting body is matched with the third limiting body; under the elastic acting force of the clamping jaw, the first expansion piece drives the mounting seat to move first, so that the first limiting body is matched with the limiting part.

8. The fixing mechanism according to claim 7, wherein when the first expansion piece is in an extending action, the first expansion piece first drives the mounting base to move, and when the first position-limiting body is engaged with the position-limiting member, the first expansion piece drives the transmission member to move, and the clamping groove is closed; when the first expansion piece is in the contraction action, the clamping jaw is elastically reset and pushes the transmission piece to move, and when the second limiting body is matched with the third limiting body, the first expansion piece drives the mounting seat to move.

9. A fixing mechanism as claimed in any one of claims 1 to 6, wherein the drive unit comprises a first power source for causing telescopic movement of the mounting base and a second power source for causing movement of the transmission member.

10. An in vitro diagnostic analyzer comprising the securing mechanism of any one of claims 1 to 9.

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