JP3487721B2 - Stirrer for automatic biochemical analyzer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field of an automatic biochemical analyzer for analyzing a plurality of items of a biological sample such as blood or urine, and in particular, a reagent and a diluent are mixed therein. It belongs to the technical field of a stirrer that stirs the prepared sample so that these reagents and diluents are uniformly mixed with the sample.

[0002]

2. Description of the Related Art As a conventional biochemical automatic analyzer for analyzing such a biological sample, for example, a sample is dispensed from each sample container set in a sample disk into each reaction tube of a reaction disk by a sample pipette. Then, when adding reagents drawn by reagent pipettes from multiple reagent disks to analyze multiple items, the sequence order of the analysis items is determined in consideration of the time required for the analysis process and the analysis process time is shortened. Such a method is known (Japanese Patent Laid-Open No. 5-2024).

[0003]

By the way, in such a biochemical automatic analyzer, for example, after a sample is stored in a reaction container of a reaction turntable, a predetermined amount of reagent is injected at a predetermined position of the reaction turntable. Then, the sample and the reagent are generally stirred so that the sample and the reagent are uniformly mixed. In that case,
At each predetermined position on the peripheral portion of the reaction turntable, an operation of injecting another sample into another reaction vessel, an operation of injecting another reagent into another sample in another reaction vessel, and another operation in another reaction vessel The stirring work of the sample and the other reagent, or the washing work of the other reaction container for which the measurement is completed are performed at the same time. Therefore, the turntable is stopped for a predetermined time for these operations. On the other hand, after the reagent is put into the sample and stirred, the turntable is rotated about one revolution or more to detect the reaction of the sample at the detection position of the turntable.

As described above, in the conventional biochemical automatic analyzer, the stop and rotation of the reaction turntable are repeatedly performed when measuring the sample. However, when many different samples are sequentially placed in each reaction container of the reaction turntable and the above-mentioned operations are repeated to sequentially detect the reactions of those samples, it is necessary to stop and rotate the reaction turntable in this way. If it is repeated, it takes a lot of time. Therefore, in order to detect the reaction of many different samples within the shortest possible time, it is desirable to shorten the time required for each of the above-mentioned operations.

Therefore, since each of the above-mentioned works is performed at the same time when the turntable is stopped, when the working time of each of the above-mentioned works is examined, the working time of the stirring work is the longest. Therefore, in the conventional biochemical automatic analyzer, it is required to shorten the working time of the stirring work as much as possible.

The present invention has been made in view of the above circumstances, and an object thereof is to efficiently carry out stirring of a sample in a short time to shorten the working time of the stirring work as much as possible and to react the sample. It is an object of the present invention to provide a stirrer in a biochemical automatic analysis device, which can shorten the time required for detection and more accurately detect a large number of different samples within a predetermined time.

[0007]

In order to solve the above problems, the invention of claim 1 provides a sample table in which sample containers for containing a sample are arranged, a reaction table in which reaction containers are arranged, and A sampling pipette for sucking the sample from the sample container and discharging it into the reaction container, a reagent table in which a reagent container containing a reagent is arranged, and a reagent pipette for sucking the reagent from the reagent container and discharging it into the reaction container. A stirring device that stirs the sample and the reagent in the reaction container, a detector that detects the reaction of the sample after stirring the sample and the reagent, and the reaction container after the detection of the reaction of the sample ends A washing device for washing the sample, and detecting a reaction of the sample after mixing and stirring a predetermined amount of sample and a predetermined amount of reagent. In the biochemical automatic analyzer for analyzing the sample further, the stirring device is provided with a stirring rod provided in the reaction container so as to be able to move forward and backward, a rotary motion means for rotating the stirring bar, and the rotary motion means. And a reciprocating means for reciprocating the supporting bracket in the front-back direction, and by causing the stirring rod to simultaneously perform the reciprocating motion in the front-rear direction and the rotational movement in the reaction container, the sample in the reaction container It is characterized in that the reagent is agitated.

Further, the invention of claim 2 is a sample table in which sample containers for accommodating an original sample are arranged,
A dilution table in which dilution containers are arranged, a dilution pipette that aspirates the original sample from the sample container and discharges it together with the diluent into the dilution container, and the original sample in the dilution container to create a diluted sample And a dilution stirrer for stirring the diluting liquid, a reaction table in which reaction vessels are arranged, a sampling pipette for sucking a diluted sample from the diluting vessel and discharging it into the reaction vessel, and a reagent vessel accommodating a reagent are arranged. Reagent table, a reagent pipette for sucking the reagent from the reagent container and discharging the reagent into the reaction container, a reaction stirring device for stirring the diluted sample and the reagent in the reaction container, the diluted sample and the A detector for detecting the reaction of the diluted sample after stirring with the reagent, and the reaction after the detection of the reaction of the diluted sample is completed. And a cleaning device for cleaning the vessel,
In a biochemical automatic analyzer for analyzing a sample by detecting a reaction of the diluted sample after mixing and stirring a predetermined amount of the diluted sample and a predetermined amount of the reagent, the dilution stirring device and the reaction stirring device Out of
At least the reaction stirrer reciprocates the stir bar provided in the reaction vessel so as to be able to move forward and backward, the rotary motion means for rotating the stir bar and the support bracket to which the rotary motion means is attached to reciprocate back and forth. An agitating means, wherein the stirring rod is caused to simultaneously perform a reciprocating motion in the front-back direction and a rotating motion in the reaction container, thereby stirring the diluted sample and the reagent in the reaction container. Is characterized by. Further, the invention of claim 3 is characterized in that the reciprocating means includes a longitudinal movement motor and a mechanism for converting the rotation of the longitudinal movement motor into a reciprocating movement, and the reciprocating motor supports the first motor. The rotary motion means is equipped with a rotary motion motor, and the rotary motion motor is mounted on a second motor support bracket which is the support bracket. The stirring rod is connected to the rotating shaft, and the mechanism for converting the rotation of the motor for forward / backward movement into reciprocating motion is configured to convert the rotation of the motor for reciprocating movement into reciprocating motion to move the second motor support bracket forward / backward. The feature is that it reciprocates in the direction. Further, the invention of claim 4 is characterized in that the stirring rod is moved in and out of the reaction container by moving the first motor support bracket.

[0009]

In the stirrer of the present invention constructed as described above, the stir bar reciprocates forward and backward by the reciprocating means while entering the reaction vessel, and at the same time, rotates by the rotary moving means. . At this time, the reciprocating movement of the stirring rod in the front-back direction by the reciprocating means is performed by the reciprocating means reciprocating in the front-back direction between the rotary motion means and the support bracket to which the rotary motion means is attached. As a result, at least the sample or diluted sample and the reagent are agitated by the reciprocating motion and the rotational motion of the stirring rod in the front-back direction. Therefore,
At least the sample or diluted sample and the reagent are efficiently stirred, and at least the sample or diluted sample and the reagent are rapidly and uniformly stirred, and the stirring time is significantly shortened.

As a result, the sample can be surely stirred in a short time, and more different biological samples can be analyzed more accurately within a predetermined time.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. FIG. 1 is a diagram showing the overall configuration of a biochemical automatic analyzer equipped with the stirring device of the present invention.

The biochemical automatic analyzer 1 of the present invention comprises a predetermined number of sample containers 2, 2 ... In which a biological sample is put, and a diluting liquid containing a special diluting liquid other than a normal diluting liquid such as physiological saline. The sample turntable 4 in which the containers 3, 3, ... Are set, the dilution turntable 6 in which the diluted containers 5, 5, ... A first reagent turntable 8 in which a predetermined number of first reagent containers 7, 7, ... Is set, and a second reagent turntable in which a predetermined number of second reagent containers 9, 9, ... 10, a diluted sample sampled from the dilution container 5 of the dilution turntable 6, the first reagent sampled from the first reagent container 7 of the first reagent turntable 8 and the second reagent container 9 of the second reagent turntable 10. A predetermined number of reaction vessels 11, 11 in which the sampled second reagents are placed and reacted
It consists of a reaction turntable 12 on which is set.

In the sample turntable 4, the sample containers 2, 2, ... Are arranged in two rows on the outer side, and the diluting liquid containers 3, 3 ,. , ...; 3, 3, ... Are set in a predetermined number. The sample turntable 4 is step-fed at a predetermined speed.

A sample dilution pipette 13 is arranged around the sample turntable 4. The sample diluting pipette 13 is driven left and right and up and down by an unillustrated left and right driving mechanism for sample diluting pipette,
It reciprocates between the sample turntable 4 and the dilution turntable 6 by turning left and right through a washing device (not shown). Then, the sample diluting pipette 13 is placed on the sample turntable 4 at a predetermined position, and
When the sample is accessed by vertical movement, a sample pump (not shown) operates to suck a predetermined amount of the sample, and when the dilution container 5 is accessed at a predetermined position of the dilution turntable 6, the sample is supplied from the sample dilution pipette 13 itself. A predetermined amount of the diluting liquid (usually physiological saline) is discharged, and as a result, the sample is diluted in the diluting container 5 to a predetermined multiple. After that, the sample dilution pipette 13 is cleaned by a dilution cleaning device (not shown).

Around the dilution turntable 6, in addition to the sample dilution pipette 13, the sampling pipette 1
4, a diluting stirring device 15, and a diluting and washing device 16 called a washing jar are arranged. The diluted sample in the dilution container 5 is agitated by the dilution agitator 15 to uniformly dilute the sample. In order to secure the freedom of arrangement of each of these devices 13, 14, 15, 16, the dilution turntable 6
Is fed stepwise with a number that does not have a common factor as the total number of diluting containers 5 arranged on the circumference of the diluting turntable 6 as one step feeding number.

The sampling pipette 14 is moved to the left and right by a sampling pipette left and right / up and down driving mechanism (not shown).
It is driven up and down, and reciprocates between the dilution turntable 6 and the reaction turntable 12 through the dilution cleaning device 16 by left and right rotation. When the sampling pipette 14 moves up and down at a predetermined position of the dilution turntable 6 to access the dilution container 5, a dilution sample pump (not shown) operates to suck a predetermined amount of the diluted sample, and the reaction turntable 12 moves to a predetermined position. The diluted sample sucked when the reaction container 11 is accessed by the vertical movement at the position is discharged to the reaction container 11.

The dilution stirring device 15 is driven up and down by a stirring device vertical drive mechanism (not shown), and a stirring rod (not shown) is moved back and forth (reciprocating reciprocating motion in the direction along the diameter of the dilution turntable 6). ing. Then, the stirring rod enters the diluted sample in the predetermined dilution container 5 of the dilution turntable 6 and moves back and forth to uniformly dilute the sample. The dilution cleaning device 16 is configured to clean the sampling pipette 14 after discharging the diluted sample into the reaction container 11.

Around the reaction turntable 12, in addition to the sampling sample pipette 14, the first reagent pipette 17, the second reagent pipette 18, the first reaction stirring device 1
9, a second reaction stirrer 20, a multi-wavelength photometer 21 as a detector, a thermostat 22, and a reaction container cleaning device 23 are arranged.

The first reagent pipette 17 is a first reagent pipette (not shown).
The reagent pipette is driven left and right and up and down by a left and right driving mechanism to reciprocate between the reaction turntable 12 and the first reagent turntable 8 by left and right rotation. Then, when the first reagent pipette 17 moves up and down at a predetermined position of the first reagent turntable 8 to access the first reagent container 7, a first reagent pump (not shown) operates to suck a predetermined amount of the first reagent. The first reagent aspirated when the reaction container 11 is accessed by vertically moving at a predetermined position of the reaction turntable 12 is discharged to the reaction container 11.

The first reaction stirrer 19 is driven up and down by a stirrer vertical drive mechanism (not shown), and the stirring bar is rotated and reciprocated in the front-rear direction as will be described later. And reaction turntable 1
The reaction of the diluted sample by rotating and moving back and forth (straight forward / backward movement in the direction along the diameter of the reaction turntable 12) after the stirring bar enters the diluted sample in the predetermined reaction container 11 and the first reagent Are performed uniformly and reliably.

The second reagent pipette 18 is a second reagent pipe (not shown).
The reagent pipette is horizontally and vertically driven by a horizontal / vertical drive mechanism to reciprocate between the reaction turntable 12 and the second reagent turntable 10 by lateral rotation. When the second reagent pipette 18 moves up and down at a predetermined position of the second reagent turntable 10 to access the second reagent container 9, a second reagent pump (not shown) operates to suck a predetermined amount of the second reagent. Then, the second reagent sucked when the reaction container 11 is accessed by the vertical movement at the predetermined position of the reaction turntable 12 is discharged to the reaction container 11.

The second reaction stirrer 20 has exactly the same structure as the first reaction stirrer 19, and is driven up and down by a stirrer up-and-down drive mechanism (not shown), and the stirring rod described later rotates and moves forward and backward. It is designed to reciprocate in any direction. Then, after the stirring rod enters the diluted sample and the second reagent in the predetermined reaction container 11 of the reaction turntable 12, the stirring rod is rotated and moved back and forth so that the reaction of the diluted sample is uniformly and surely performed. ing.

The multi-wavelength photometer 21 measures the absorbance of the diluted sample in the reaction vessel 11 and detects the reaction state of the diluted sample in the reaction vessel 11.

The constant temperature bath 22 keeps the reaction container 11 of the reaction turntable 12 at a constant temperature.

The reaction container cleaning device 23 draws in the diluted sample, which has been detected in the reaction container 11, by a waste liquid pump (not shown) and discharges the diluted sample into a waste liquid tank, and then uses a cleaning liquid pump (not shown) to apply the cleaning liquid to this reaction. The cleaning liquid is supplied into the container 11 to clean the inside of the reaction container 11 with this cleaning liquid, and then the cleaning liquid is discharged to a waste liquid tank.

Each of these devices 14, 17, 18, 19, 2
In order to secure the freedom of arrangement of 0, 21, 22, 23,
The reaction turntable 12 is also this reaction turntable 12.
The number of reaction vessels 11 arranged on the upper circumference is not stepped in common with the total number of reaction vessels 11, and the step number is set as one step. In that case, the reaction turntable 12 is adapted to rotate more than a half turn per step.

FIG. 2 shows the first and second reaction stirrers 19 and 20 (hereinafter, simply referred to as the reaction stirrer in the description of FIGS. 2 and 3) of this embodiment partially and partially in section. The front view shown in FIG.
It is sectional drawing which follows the line.

As shown in FIGS. 2 and 3, the reaction stirring device is provided with a frame 24 extending vertically so that it can be moved vertically. The first motor support bracket 25 is fixed. A front-back motion motor 26 is attached to the first motor support bracket 25. A pulley rotation shaft 27 is rotatably supported between the frame 24 and the first motor support bracket 25, and the pulley rotation shaft 27 penetrates a through hole 28 of the frame 24 so that the It projects toward the reaction container 11 side. The drive pulley 29 fixed to the rotary shaft of the longitudinal movement motor 26 and the driven pulley 30 fixed to the pulley rotary shaft 27 are connected by a power transmission belt 31.

A cam disk 32 is fixed to the end of the pulley rotation shaft 27 projecting toward the reaction container 11 side of the frame 24, and a cam roller 33 is attached at a position eccentric from the rotation center of the cam disk 32. It is rotatably provided by a pin 34.

A guide rail 35 is fixed to the frame 24 on the side of the reaction vessel 11 in the left-right direction (front-back direction with respect to the frame 24) in FIG. A second motor support bracket 36 is supported on the guide rail 35 so as to be movable in the front-rear direction (left-right direction in FIG. 2). A rotary motion motor 37 is attached to the second motor support bracket 36, and a cylindrical rotary shaft guide 39 is vertically fixed coaxially with a rotary shaft 38 of the rotary motion motor 37. . A rotary shaft 38 of a rotary motion motor 37 is rotatably fitted into the rotary shaft guide 39. And this rotating shaft 38
A stirring rod 40 is connected to the end of the rotary shaft guide 39 protruding downward. As shown in FIG. 3, the stirring rod 40 has an elongated flat shape, and is sized so that it can enter the reaction vessel 11 and rotate and move straight.

Further, a U-shaped cam groove 41 is formed at the right end portion of the second motor support bracket 36 in FIG. 2, and the cam roller 33 is slidably fitted in the cam groove 41. . That is, the portion of the second motor support bracket 36 including the cam groove 41 is the cam follower portion 36.
It is a. Therefore, when the cam disk 32 rotates and the cam roller 33 eccentrically rotates, the cam follower portion 36a follows only the back and forth movement of the cam roller 33, and reciprocates linearly in the front and rear direction. In this way, the cam disk 32, the cam roller 33, and the cam follower portion 36a constitute a rotation-linear movement conversion cam mechanism that converts the rotational movement into the linear movement.

Each table 4, each pipette 13, 1
4,17,18 operation control, each stirring device 15,19,2
0, cleaning devices 16, 23, detectors, motors 26, 37
The control of the operations such as the above is performed by a control device such as a computer (not shown).

In the reaction stirrer of the present embodiment thus constructed, the control device descends the frame 24 when the reaction vessel 11 containing the reagent and the sample requiring stirring reaches the stirring position. Then, the stirring rod 40 also descends and enters the reaction container 11. The control device stops the lowering of the frame 24 at a predetermined lowering position of the stirring rod 40 with respect to the reaction container 11 (that is, a predetermined lowering amount of the frame 24). Next, the control device drives the motor 26 for longitudinal movement and the motor 37 for rotational movement.

By driving the longitudinal movement motor 26, the driving pulley 29, the power transmission belt 31, and the driven pulley 30.
And the cam disk 32 rotates via the pulley rotation shaft 27. Due to the rotation-to-straight conversion cam mechanism described above, the rotation of the cam disk 32 causes the second motor support bracket 36 to rotate.
The second motor support bracket 36 is guided by the guide rail 35 to reciprocate in the front-rear direction. By the reciprocal movement of the second motor support bracket 36 in the front-rear direction, the stirring rod 40 also reciprocates in the front-rear direction in the reaction vessel 11. On the other hand, the stirring rod 40 is moved to the reaction container 1 by the driving of the rotary motion motor 37.
The rotation motion will be performed simultaneously within 1.

As described above, according to the stirring apparatus of the present embodiment, the stirring rod 40 simultaneously performs the back-and-forth movement and the rotation movement in the reaction vessel 11, whereby the sample and the reagent are efficiently stirred. Moreover, since the stirring rod 40 is flat like a spatula, the sample and the reagent are further efficiently stirred. Therefore, the stirring of the sample and the reagent becomes uniform quickly, and the stirring time can be greatly shortened.

The case where the stirring device of the present invention is applied to stirring a diluted sample and a reagent has been described.
It goes without saying that it can also be applied to stirring the sample and the diluent if necessary.

[0037]

As is apparent from the above description, according to the stirring apparatus of the present invention, while the stirring rod is rotated by the rotating motion means, the rotating motion means and the support to which the rotating motion means is attached by the reciprocating motion means. By reciprocating the bracket in the front-rear direction and simultaneously performing the reciprocating movement in the front-rear direction and the rotational movement of the stirring rod, at least the sample or the diluted sample and the reagent are stirred, so at least the sample or the diluted sample is diluted. The sample and the reagent can be efficiently stirred. Therefore, the stirring of at least the sample or the diluted sample and the reagent can be rapidly and uniformly made, and the stirring time can be greatly shortened.

As a result, the sample can be agitated efficiently and reliably in a short time, and more different biological samples can be analyzed more accurately within a predetermined time.

[Brief description of drawings]

FIG. 1 is a diagram showing an overall configuration of a biochemical automatic analyzer equipped with a stirrer of the present invention.

FIG. 2 is a front view showing the reaction stirring device of the present invention partially and partially in section.

3 is a sectional view taken along line III-III in FIG.

[Explanation of symbols]

1 ... Biochemical automatic analyzer, 2 ... Sample container, 3 ... Diluting liquid container, 4 ... Sample turntable, 5 ... Diluting container,
6 ... Dilution turntable, 7 ... First reagent container, 8 ... First
Reagent turntable, 9 ... Second reagent container, 10 ... Second reagent turntable 10, 11 ... Reaction container, 12 ... Reaction turntable, 1
3 ... Sample dilution pipette, 14 ... Sampling pipette, 15 ... Dilution stirring device, 16 ... Dilution washing device, 17 ...
1st reagent pipette, 18 ... 2nd reagent pipette, 19 ... 1st reaction stirring device, 20 ... 2nd reaction stirring device, 21 ... Multiwavelength photometer, 22 ... Constant temperature bath, 23 ... Reaction container washing device, 2
4 ... Frame, 25 ... 1st motor support bracket, 26
... longitudinal movement motor, 27 ... pulley rotation shaft, 29 ... drive side pulley, 30 ... driven side pulley, 31 ... power transmission belt, 32 ... cam disk, 33 ... cam roller, 34 ... mounting pin, 35 ... guide rail, 36 ... second motor support bracket, 36a ... cam follower portion, 37 ... rotary motion motor, 38 ... rotary shaft, 39 ... rotary shaft guide, 40 ... stirring rod, 41 ... cam groove

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Susumu Saito 3-1, Musashino, Akishima-shi, Tokyo Nihon Electronics Co., Ltd. (56) Reference JP-A-4-130248 (JP, A) JP-A 5-2024 (JP, A) JP 5-240871 (JP, A) JP 5-302928 (JP, A) JP 8-194004 (JP, A) JP 8-233827 (JP, A) JP-A-8-75752 (JP, A) JP-A-57-21923 (JP, A) JP-A-58-58470 (JP, A) Actual development Sho-55-13644 (JP, U) Actual development Sho-56 −137731 (JP, U) Actual development Sho 58-92669 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G01N 35/00-35/10 G01N 1/00-1/44 B01F 7/00-7/32 JISST file (JOIS)

Claims (4)

(57) [Claims] 1. A and sump ruthenate Buru the sample container is arranged to accommodate a sample, reaction of the reaction vessel are arranged
And tables, the sample and sampling pipette for ejecting the reaction vessel by suction the sample from the container, and a trial Kusurite Buru the reagent container is arranged to accommodate a reagent, the aspirating the reagent from the reagent container reaction A reagent pipette for discharging into a container, a stirring device for stirring the sample and the reagent in the reaction container, a detector for detecting a reaction of the sample after stirring the sample and the reagent, and a reaction of the sample A biochemical automatic analysis for analyzing the sample by detecting the reaction of the sample after mixing and stirring a predetermined amount of sample and a predetermined amount of reagent, and a washing device for washing the reaction container after the detection of In the apparatus, the stirring device comprises a stirring rod provided in the reaction container so as to be able to move forward and backward, and a rotary movement means for rotating the stirring rod.
And a reciprocating means for reciprocating the support bracket rotating movement means Toko is attached <br/> in the longitudinal direction, at the same time to perform a rotational movement and the longitudinal direction of the reciprocating motion to the stirrer in the reaction vessel By so doing, the sample and the reagent in the reaction container are stirred, and the stirring device in the biochemical automatic analyzer is characterized in that. Wherein the sump ruthenate Buru the sample container is arranged to accommodate the original sample, dilute the dilution container are arranged
And Shakute Buru, the aspirated from the sample container to the original sample, and diluting pipette for ejecting the diluent container along said diluent, and the original sample and the diluent in the diluent container to create a diluted sample and diluted stirring device for stirring and a reaction 応Te Buru the reaction container is arranged, and sampling pipette for ejecting the reaction vessel was aspirated diluted sample from said dilution vessel, a reagent container containing a reagent are arranged trial and Kusurite Buru, a reagent pipette for ejecting the reaction vessel by suction the reagent from the reagent container,
A reaction stirring device that stirs the diluted sample and the reagent in the reaction container, and a detector that detects the reaction of the diluted sample after stirring the diluted sample and the reagent,
A washing device for washing the reaction container after completion of detection of the reaction of the diluted sample is provided, and after a predetermined amount of the diluted sample and a predetermined amount of the reagent are mixed and stirred, the reaction of the diluted sample is detected. In the biochemical automatic analyzer for analyzing the sample, at least the reaction stirrer of the dilution stirrer and the reaction stirrer is provided with a stirrer provided so as to be able to move back and forth in the reaction container, and the stirrer. Time to rotate
Rolling movement means and a support block to which this rotation movement means is attached.
Comprising <br/> a reciprocating means for reciprocating in the longitudinal direction racket, by causing the longitudinal direction of the reciprocating motion and rotary motion and simultaneously the stirrer in the reaction vessel, the said reaction vessel A stirrer in a biochemical automatic analyzer, characterized in that a diluted sample and the reagent are stirred. 3. The reciprocating means comprises a motor for back and forth movement.
A mechanism that converts the rotation of this forward-backward movement motor into reciprocating movement
And the reciprocating motor has a first
It is attached to a motor support bracket, and the rotary motion means includes a motor for rotary motion.
This rotary motion motor is the support bracket.
Is attached to a second motor support bracket, and the stirring rod is connected to the rotary shaft of the rotary motion motor.
Therefore, the mechanism that converts the rotation of the motor for back and forth motion into reciprocating motion is
Converting the rotation of the reciprocating motor into reciprocating motion
Reciprocates the second motor support bracket back and forth
The exercise device according to claim 1, wherein the exercise device is exercising.
Or a stirring device in the biochemical automatic analyzer according to 2. 4. Moving the first motor support bracket
To remove the stirring rod from the reaction vessel.
Claim characterized in that the insertion is made
Item 3. A stirrer in the biochemical automatic analyzer according to Item 3.