JP2592610Y2 - Shaking stirrer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a device for adding a reagent to a small amount of a test sample and shaking the sample in the medical and chemical fields. The present invention relates to a shaking stirrer in which a sample mounting table is in a horizontal state at the time of start-up and at the end of stirring, and is appropriately tilted only when shaking.

[0002]

2. Description of the Related Art Conventionally, when a reagent is added to a test substance in a medical or chemical laboratory or laboratory for testing / analysis, the reagent is added one by one by hand and agitated or scaled up. And expensive experimental equipment.

[0003] On the other hand, an apparatus for adding a reagent to a small amount of a test sample and shaking the sample is also provided on the market.

In this apparatus, a sample mounting table on which a test sample and a reagent are mounted and shaken and agitated is arranged in a state of being inclined to some extent from the beginning, and the sample mounting table in the inclined state is horizontally moved. This is a device that swings by rotating in the direction.

[0005]

The above conventional method has a problem that the agitation of the test sample and the reagent is not uniform or the operation is complicated.

[0006] In the latter device for shaking and stirring, since the sample mounting table is inclined from the beginning, when the test substance and the reagent are fluid substances, they are shifted from the beginning. In many cases, which often adversely affected the agitation.

In view of the above-mentioned problems, the present invention provides a device for adding a reagent to a small amount of a test substance and shaking and stirring the test substance in a medical or chemical field. The sample mounting table to be shaken and stirred is provided with a shake stirrer that is in a horizontal state at the time of starting and at the end of stirring, and is appropriately tilted only when shaken. It was devised as an issue.

[0008]

In order to solve the above problems, a slide holder which is connected to a motor shaft and rotates and a direction perpendicular to an axis of rotation of the slide holder is set in the slide holder. A slider that slides, a cam guide pin that is implanted in a direction perpendicular to the slide direction of the slider, a movable cam that abuts the cam guide pin to appropriately control the slide of the slider, and a spherical seat bearing on the slider. A shaking shaft mounted so as to be able to swing freely, a sample mounting table mounted at a tip of the shaking shaft, an elastic body for appropriately controlling the shaking motion of the sample mounting table, and the movable cam. And a slide holder rotation control mechanism that regulates the rotation time and rotation position of the slide holder. The cam guide pin abuts the cam guide pin in contact with the cam guide pin during operation of the cam guide mechanism and the outer arc that contacts the cam guide pin during and immediately before the stop. Spherical seat bearing in which the oscillating shaft itself is inclined and fixed to the frame surface on the motor shaft extension line by the orbital movement of the spherical bearing bearing that supports the slider's oscillating shaft It is characterized by a conical movement with a fulcrum as a fulcrum and a vertical stop.

Further, the sample mounting table is always stretched by a leaf spring material, and is formed so as to appropriately control the swinging motion of the sample mounting table stably.

[0010]

As described above, the movable cam and the cam control mechanism each having a substantially crescent-shaped shape composed of the inner arc that the cam guide pin contacts during operation of the motor and the outer arc that contacts when the motor is stopped and immediately before the stop. The spherical seat bearing portion which supports the swing shaft of the slider orbits around the motor shaft.
The oscillating shaft itself tilts and performs conical movement with the spherical seat bearing fixed to the frame surface on the extension of the motor shaft as a fulcrum, and stops vertically when stopped, so the sample mounting table for mounting the test sample and reagent is tilted. Repeated oscillating motion in the state where
At the time of start-up and at the end of stirring, it is in a horizontal state and the operation becomes easy. Since the structure is simple, it is possible to reduce the size and cost.

The stirring time can be set by a slide holder rotation control mechanism for regulating the rotation time and rotation position of the slide holder, and a timer of the control unit.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an external perspective view of the apparatus according to one embodiment of the present invention, FIG. 2 is a plan view when the drive unit is stopped and when it is ready to stop, FIG. 3 is a plan view when the drive unit is operating, and FIG. V-V in FIG.
5 is a cross-sectional view taken along the line XX in FIG. 3, FIG. 6 is an exploded perspective view of the driving unit, FIG. 7 is a perspective view showing a vibration state of the driving unit, and FIG. 5 is a flowchart illustrating control of horizontal stop of a unit. FIG. 9 is a perspective view of an example in which the oscillating motion of the sample mounting table 12 is appropriately controlled by a leaf spring material, FIG. 10 is a perspective view of a driving unit to which a guide plate of a cam guide pin is attached, and FIG. 9 is a plan view at the time of operation of a drive unit to which the leaf spring material 9 and the guide plate of FIG. 10 are attached, and FIG. 12 is a sectional view taken along the line YY in FIG.

The vibration stirrer according to this embodiment comprises a drive unit D of a sample mounting table for mounting a test sample and a reagent and a control unit C for controlling the same, as shown in FIG. Is done. The control unit C includes a power supply unit (not shown) of the apparatus, a control board (not shown), a buzzer (not shown), a power switch 29, a buzzer switch 28, a start switch 27, a timer 30, and the like.

When the control section C sets the timer 30 and presses the start switch 27, the operation stops at the set time. At this time, when the buzzer switch 28 is turned on, the buzzer sounds when the operation is stopped.

As shown in FIG. 6, the drive section D is mounted and mounted on a box in which the control section C is built through a frame B21 fixed with drive section fixing screws D1. In this case, the induction motor 26 that is a direct drive source of the drive unit D is built in the box of the control unit C,
The motor shaft is formed so as to penetrate the frame B21 and protrude upward. A frame A20 is erected on stays 22 erected at the four corners of the frame B21.

The driving section D directly swings the movable cam 5, the solenoid 7 for operating the cam guide pin 3, the swing shaft 13 for swinging the sample mounting table 12, and the swing shaft 13. It comprises a slide holder 1 to be described later and a photo sensor 9 for appropriately detecting the rotation to control the rotation of the slide holder 1.

In the cam portion, the movable cam 5 is connected to the lever 6 at two points by cam fixing screws 5A, and the lever fulcrum screw 5B penetrates the lever fulcrum collar 23 and is swingably fixed to the frame B21. Have been. Solenoid 7 attached via lever 6 and solenoid link 11, lever 6
Lever stopper 8 for restricting the movement of the solenoid 7 of the actuator, a tension coil spring B1 for returning the pulled lever
8 are hooked on the frame B2.
Fixed to 1.

On the frame A20, a center boss 14 to which a spherical bearing 19 on which the oscillation shaft 13 is mounted is fixed on an extension of the motor shaft. Then, a limiter 16 and a tension coil spring A17 for restricting the swinging motion of the spring hook shaft 15, and a spring hook stat 25 for hooking this spring are fixed to the frame A20, respectively. As shown in FIG. 4, a sample mounting table 12 and a spring mounting shaft 15 for holding the sample mounting table 12 are mounted on a swing shaft 13 which is supported by a slider 2 described later and a spherical bearing 19 fixed to each of the center bosses 14. And are combined.

As shown in FIGS. 9 and 12, a leaf spring material 33 is layered in place of the spring hanging shaft 15, the tension coil spring A, and the limiter 16, and the sample mounting table 12 and the frame A
The swinging motion of the sample mounting table 12 can be controlled stably and appropriately by constantly stretching the space between the sample mounting tables 20.

The slide holder 1 is fixed to a motor shaft of an induction motor 26 projecting from the frame B21 with a holder fixing screw 1B. As shown in FIG. 3, the slide holder 1 is housed in a groove in the slide holder 1 with the spherical seat bearing 19 and the slider 2 into which the cam guide pin 3 is press-fitted pressed by the compression coil spring 4, and the holder cover 1A is sealed. Stopped. On the slide holder 1, an angle adjusting screw 10 for regulating the lateral movement momentum of the slider 2 and adjusting the oscillation angle of the oscillation shaft 13 is in contact with the slider 2 through a groove in the slide holder 1.

The photo sensor 9 is fixed to the frame B21 by a sensor angle 24.

The cam guide pin 3 pressed into the slider 2
Penetrates the round hole at the bottom of the groove of the slide holder 1 and abuts on the outer side of the arc portion of the movable cam 5 having a substantially crescent shape as shown in FIG. As shown in FIG. 3 and FIG.
The slider 2 inside slides due to the pressing of the compression coil spring 4, the cam guide pin 3 is guided inside the arc portion of the movable cam 5, and the spherical seat bearing 19 that swings the oscillation shaft 13 inside the slider 2 includes: It slides in the outer circumferential direction from the motor axis to start the orbital movement around the motor shaft. Therefore, the center boss 1 on the frame A20
The swinging shaft 13, which is supported by spherical bearings 19 fixed in the slider 4 and the slider 2, respectively, is initially shown in FIG.
As shown in FIG. 5, the slider 2 slides, and at the same time, the conical motion starts around the spherical seat bearing 19 fixed in the center boss 14 as shown in FIG. As a result, the sample mounting table 12 initially in the horizontal state repeats the repetitive swinging motion while being inclined as shown in FIG.

As shown in the flow chart of FIG. 8, when the time set in advance by the timer 30 is over, the photo sensor 9 detects the stop position detecting section 1C of the slide holder 1 and excites the solenoid 7 so that the solenoid 7 is excited. The cam guide pin 3 is guided to the outside of the circular arc portion of the movable cam 5 in conjunction with the lever 6 and the movable cam 5. Therefore,
The slider 2 slides while pressing the compression coil spring 4 in the slide holder 1, and the spherical seat bearing 19 returns to the motor shaft position, returns the rocking shaft 13 to a vertical state on the motor axis, and stops. , Sample mounting table 12
Returns to the horizontal state and stops. At this time, buzzer switch 2
If 8 is set to ON in advance, the end of stirring is notified by a buzzer built in the control unit C.

Also, as shown in FIG.
A guide plate A31 and a guide plate B32 are provided on the opposite surface of the movable cam 5 around the motor shaft projecting from
1 and a guide for bringing the cam guide pin 3 into contact, the cam guide pin 3 is reliably brought into contact with the inside or outside of the arc portion of the movable cam 5 to be guided and revolved. Brings better results. Guide plate A31,
When screwing the guide plate B32 on the frame B21, a substantially L-shaped lever stopper 8A for restricting the movement of the lever 6 is attached as shown in FIG.

It goes without saying that the present invention is not limited to the embodiment described above.

[0027]

[Effects of the Invention] The present invention is configured as described above, so that it has a substantially crescent-shaped configuration consisting of an inner arc that the cam guide pin abuts during operation of the motor and an outer arc that abuts at and immediately before the stop. With the movable cam and the cam control mechanism, the spherical seat bearing that supports the slider's oscillation axis orbits around the motor axis, and the oscillation axis itself tilts to the frame surface on the extension line of the motor axis. Conical movement with the fixed spherical seat bearing as a fulcrum, and vertical stop when stopped, the sample mounting table for mounting the test sample and the reagent repeats the reciprocating rocking motion in an inclined state, at startup and at the end of stirring. Is horizontal and easy to operate, compact and inexpensive.
It has excellent effects such as being able to uniformly stir the test substance with the reagent and, if necessary, notifying by a buzzer at the end of the stirring. Further, the sample mounting table is always stretched by a leaf spring material, and the swinging motion of the sample mounting table is appropriately controlled stably to achieve a more excellent effect.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a plan view at the time of stopping the drive unit and at the time of preparing to stop in the embodiment of the present invention.

FIG. 3 is a plan view of the driving device according to the embodiment of the present invention when the driving device is operated.

FIG. 4 is a cross-sectional view taken along line VV at the time of stoppage in FIG. 2;

FIG. 5 is a sectional view taken along line XX in FIG. 3;

FIG. 6 is an exploded perspective view of a driving unit according to an embodiment of the present invention.

FIG. 7 is a perspective view of a main part showing a swinging state of a driving unit in one embodiment of the present invention.

FIG. 8 is a flowchart showing the operation control of the embodiment of the present invention.

FIG. 9 is a perspective view of the upper portion of the apparatus in a case where the oscillating motion of the sample mounting table in the embodiment of the present invention is appropriately controlled by a leaf spring material.

FIG. 10 is a perspective view of a drive unit to which a guide plate of a cam guide pin according to an embodiment of the present invention is attached.

FIG. 11 is a plan view of the drive unit to which the leaf spring material of FIG. 9 and the guide plate of FIG. 10 are attached when the drive unit is operated.

FIG. 12 is a sectional view taken along line YY in FIG. 11;

[Description of Signs] 1 Slide holder 1A Holder cover 1B Holder fixing screw 1C Stop position detector 2 Slider 3 Cam guide pin 4 Compression coil spring 5 Movable cam 5A Cam fixing screw 5B Lever fulcrum screw 6 Lever 7 Solenoid 8 Lever stopper 9 Photo sensor DESCRIPTION OF SYMBOLS 10 Angle adjustment screw 11 Solenoid link 12 Sample mounting table 13 Oscillating axis 14 Center boss 15 Spring hanging axis 16 Limiter 17 Tension coil spring A 18 Tension coil spring B 19 Spherical seat bearing 20 Frame A 21 Frame B 22 Stay 23 Lever fulcrum collar 24 Sensor angle Reference Signs List 25 spring-loaded stat 26 induction motor 27 start switch 28 buzzer switch 29 power switch 30 timer C control unit D drive unit D1 drive unit fixed J 31 guide plate A 32 guide plate B 33 leaf spring material 8A reverse stopper

Claims (2)

(57) [Scope of request for utility model registration] 1. A slide holder which is connected to a motor shaft and rotates, a slider which slides in the slide holder in a direction perpendicular to an axis of rotation of the slide holder, and a slide direction in which the slider slides. A cam guide pin planted in a direction perpendicular to the
A movable cam for abutting the cam guide pin to appropriately control the slide of the slider, a swing shaft mounted to the slider by a spherical seat bearing, and a sample mount mounted to a tip of the swing shaft. A mounting table and the sample mounting table
An elastic body for appropriately controlling the swinging motion of the slider, a cam control mechanism for controlling the movable cam, and a slide holder rotation control mechanism for regulating a rotation time and a rotation position of the slide holder. It has a substantially crescent-shaped configuration consisting of an inner arc that contacts the cam guide pin inside, and an outer arc that contacts when stopping and preparing to stop. The cam guide pin moves the cam guide pin in conjunction with the cam control mechanism. Spherical seat bearing in which the oscillating shaft itself is inclined and fixed to the frame surface on the motor shaft extension line by the orbital movement of the spherical bearing bearing that supports the slider's oscillating shaft A shaking stirrer characterized in that the shaking stirrer is formed so as to make a conical movement with a fulcrum as a fulcrum and to stop vertically. 2. The vibration stirrer according to claim 1, wherein the sample mounting table is always stretched by a leaf spring material to stably control the vibration of the sample mounting table appropriately.