JPH0262965A - Method and device for swinging slide plate - Google Patents

Abstract

PURPOSE:To uniform mixture by mixing a reagent and a sample together by varying a swing angle at all times and swinging the slide plate so that two optional points which face each other are different in maximum swing angle to a horizontal line. CONSTITUTION:A rotary shaft 5, a rotary plate 7, and the lower end of a swing shaft 2 are rotated by driving a motor 6. The swing shaft 2 is put in oscillatory motion about a universal joint 4 as a fulcrum. A slide plate setting table 1 fixed to the swing shaft 2 is therefore put in oscillatory motion while its angle is varied at all times. Then the swing shaft 2 is drawn by a spring 9 toward a machine frame 3 at all times, so the swing shaft 2 shifts in the position of engagement with the long hole 8 of the rotary plate 7 in order. Further, the distance between the centers of the swing shaft 2 and rotary shaft 5 varies at all times, so the setting table 1 varies in its swing angle at all times. Further, the maximum swing angles to the horizontal line at the two opposite points are different and the reagent and sample are mixed effectively.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method of rocking a slide plate for mixing reagents, samples, etc. in immunochemical diagnosis, etc., and a slide plate rocking device used for this mixing. It is related to.

Conventional technology> Conventional mechanical devices for swinging a slide plate are disclosed in Japanese Utility Model Publication No. 54-10314 and Japanese Utility Model Publication No. 61-23.
As shown in Japanese Patent Application Laid-open No. 798, Japanese Patent Application Laid-open No. 5520626, and Japanese Patent Application Laid-open No. 56-66757, there are some in which the swing axis is moved in a circular motion to swing the slide plate at a constant angle, and As shown in Japanese Patent No. 59-231256, there is a device that allows rocking movement only in the front-back direction. Furthermore, as shown in Japanese Unexamined Patent Publication No. 56-19453, there is also a device in which the swing axis is made to move in a constant ellipse.

<Problems to be Solved by the Invention> In the device in which the swinging shaft is moved in a circular motion to swing the slide plate at a constant angle, the swinging angle is always constant, and only mixing in a specific portion is caused by reversal. It is.

Therefore, it is difficult to mix the reagent and sample as a whole over a wide area.Also, even if the reagent and sample are mixed by rocking only in the front and back direction, mixing is not performed diagonally, so it is difficult to mix only in a specific part repeatedly. so that the reagents and sample are not thoroughly mixed over a wide range, and
Mixing by elliptical motion of the rocking axis is more effective than circular motion, but the maximum rocking angle with respect to the horizontal line is the same on the long axis and short axis sides, and the rate of change is is also constant, so that only the mixing in a particular part is repeated, and therefore the reagent and sample are mixed globally over a wide range? stomach.

In other words, in order to mix the reagent and sample uniformly, the rocking angle must be changed as needed, and the rocking angle relative to the horizontal line at opposing points must be changed to vary the rocking motion. It is necessary to prevent repeated mixing in specific parts.

In addition, as a rocking device, in order to prevent the rocking shaft from rotating together with the rotary plate, a universal joint etc. is used as shown in Japanese Patent Application Laid-Open No. 55-20626 and Japanese Patent Application Laid-Open No. 56-66757. This requires special ingenuity and the device is complicated. Also, in JP-A No. 5, the swing axis was made to move in an elliptical manner.
In the device disclosed in Japanese Patent No. 6-19453, the link mechanism is very complicated in order to cause the swing axis to move in an elliptical manner.

That is, it is desirable that the rocking device has a simple structure and that performs rocking motion such that the reagent and sample are mixed uniformly throughout.

Means for Solving the Problems> Therefore, in order to solve the above problems, the sliding plate rocking force method according to the present invention constantly changes the rocking angle, and at least any two opposing The reagent and sample are mixed by swinging the slide plate so that the maximum swing angles of the points with respect to the horizontal line are different, so that the reagent and sample are mixed uniformly throughout.

Therefore, in order to solve the above-mentioned problems, the slide plate swing device according to the present invention fixes the upper end of the swing shaft to the slide plate set base, and connects the swing shaft with a universal joint to enable swing movement. A rotary plate with a long hole is connected to a rotary shaft arranged in the frame and connected to a rotational drive source, and the lower end of the swing shaft is slidably engaged with the long hole of the rotary plate, and the swing One or more springs are stretched between the shaft and the machine frame to force the swing shaft toward a certain side of the machine frame, and the tension of the spring prevents the swing shaft from rotating and prevents the swing shaft from rotating. The swing angle of the slide plate is constantly changed by sliding through a long hole.

Embodiment Next, an embodiment of a sliding plate rocking force method and a sliding plate rocking device according to the present invention will be described based on the drawings.

l is a slide plate set stand on which the slide plate is placed, and 2
is a swing shaft whose north end is fixed to this slide table set table 1. The swing shaft 2 is disposed on the machine frame 3 via a universal joint 4 so as to be able to swing. 5 is a rotating shaft connected to a motor 6 which is a rotational drive source, and a rotating plate 7 is connected to the rotating shaft 5. An oval long hole 8 is bored in the rotating plate 7. The long hole 8 is bored so that the center of the rotating shaft 5 is located on the extension of the long axis. The lower end of the swing shaft 2 is slidably engaged with the elongated hole 8. A spring 9 is stretched between the swing shaft 2 and the machine frame 3, and urges the swing shaft 2 to be pulled toward the machine frame 3 side.

In addition, as shown in FIGS. 3 and 4, the slide plate setting table l has a slide plate holding knob 10 in the center so that two slide plates can be pressed at the same time.
A notch 11 may be formed at the end to serve as a finger grip for removing the slide plate.

Further, in FIG. 2, since the structure is simplified by using only one spring 9, the elongated hole 8 formed in the rotating plate 7 is shown as an example in which the elongated hole 8 is formed into an elliptical shape in order to smooth the movement of the swing shaft 2. However, if it is desired to reduce the play during operation as much as possible and perform accurate rocking motion, the elongated hole 8 is made into an ellipse that matches the locus of the rocking shaft 2 when it reciprocates in a straight line. In this case, as shown in FIG. 5, in order for the swing shaft 2 to slide smoothly through the elongated hole 8, two springs 9 are applied to the rotation shaft 5 of the machine frame 3 in the same direction. It is preferable to pull the swing shaft 2 toward the machine frame 3 at two symmetrical points.

In addition, if it is desired to make the swinging motion of the slide plate l complicated, the long hole 8 may be formed so that the long axis of the long hole 8 does not coincide with the center of the rotating shaft 5, or the long hole 8 may be formed into an ellipse or the same shape. It may also be an ellipse, etc. in the shape of two circles with different diameters or different diameters connected by a tangent line. In such a case, the number and arrangement position of the springs 9 will depend on the swing axis 2.
It may be adjusted appropriately so that it slides smoothly through the elongated hole 8.

Function> Then, place the slide plate with the sample and reagent on the slide plate set table l. 9 When the rotating shaft 5 rotates, the rotating plate 7 also rotates. 0 When the rotating plate 7 rotates, the rotating shaft 5 rotates.
The lower end of the rotary plate 7 also rotates. And the swing axis 2
Since its range of motion is restricted by the universal joint 4, the swing shaft 2 swings around the universal joint 4 as a fulcrum. Therefore, the slide plate set base 1 fixed to the swing shaft 2 always swings without changing its angle.

Incidentally, since the swing shaft 2 is always pulled toward the machine frame 3 side by the spring 9, the elongated hole 8 of the rotary plate 7 of the swing shaft 2
The engagement position with respect to the pivot shaft 2 changes sequentially as shown in FIG.
It will be different from an exact ellipse. Therefore, the swing axis 2
Since the distance between the rotary shaft 5 and the center of the rotating shaft 5 constantly changes, the swing angle of the slide plate set table l constantly changes.

Since it is not a precise ellipse, the maximum swing angle with respect to the horizontal line differs between the two opposing points6. For example, in the example shown in Figure 1, the maximum downward angle with respect to the horizontal line on one side is 15 degrees, but on the other The maximum descending angle is 20 degrees.

Therefore, the reagent and sample are effectively mixed.

Note that since the swing shaft 2 is always pulled toward the machine frame 3 by the spring 9, this tension can prevent the swing shaft 2 from rotating together with the rotating plate 7. Therefore, universal joint 4
The swing shaft 2 does not have a structure that specifically prevents rotation.
The structure can be simplified because the rotation of the structure can be prevented. That is, by tensioning the spring 9 between the swing shaft 2 and the machine frame 3, the swing shaft 2 is caused to slide relative to the elongated hole 8, and the swing shaft 2 rotates together with the rotating plate 7. This will prevent you from doing so.

<Effects of the Invention> As described above, according to the method for swinging a slide plate according to the present invention, the swing angle is constantly changed, and at least the maximum swing angle with respect to the horizontal line of any two opposing points is adjusted. Since the reagent and sample are mixed by swinging the slide plate such that the reagents and the sample are mixed at different angles, the reagent and sample can be mixed over a wide range, resulting in uniform mixing. According to the slide plate swinging device according to the present invention, the upper end of the swing shaft is fixed to the slide plate set base, and the swing shaft is arranged in the machine frame via the universal joint so as to be able to swing. A rotating plate with a long hole is connected to a rotating shaft connected to a rotational drive source, and the lower end of the swinging shaft is slidably engaged with the long hole of the rotating plate, and the space between the swinging shaft and the machine frame is Since one or more springs are tensioned on the shaft and the swing shaft is biased toward a certain side of the machine frame, the above-mentioned effective swing motion can be performed with a simple structure. The effect is extremely large.

[Brief explanation of the drawing]

The drawings show an embodiment of the sliding plate rocking force method and the sliding plate rocking device according to the present invention, and the first embodiment is shown in the drawings.
The figure is a sectional view, Figure 2 is a plan view for explaining the rotation locus of the swing shaft, Figures 3 and 4 show the other side of the slide plate set table, and Figure 3 shows the other side of the slide plate set table. A plan view, FIG. 4 is a front view, and FIG. 5 is a plan view for explaining the rotation locus of the swing axis when the topography is a long hole. 9...Spring lO...Slide plate holding knob 11...Notch 12...Rotation locus l...Slide plate setting base 2...Swing axis 3...Machine frame 4... Universal joint 5... Rotating shaft 6... Motor 7... Rotating plate 8... Long hole diagram

Claims (1)

[Claims] 1. The reagent and sample are mixed by rocking the slide plate so that the rocking angle always changes and at least the maximum rocking angle with respect to the horizontal line of any two points facing each other is different. A method for swinging a slide plate, characterized in that: 2 Fix the upper end of the swing shaft to the slide plate set base, and arrange the swing shaft on the machine frame via a universal joint so that it can swing.
A rotating plate with a long hole is connected to a rotating shaft connected to a rotational drive source, and the lower end of the swinging shaft is slidably engaged with the long hole of the rotating plate, and the space between the swinging shaft and the machine frame is 1. A slide plate rocking device characterized in that one or more springs are tensioned on the slide plate to bias a rocking shaft toward a certain machine frame side. 3. The slide plate swinging device according to claim 2, wherein the elongated hole is elliptical. 4. The slide plate rocking device according to claim 2, wherein the elongated hole is an oval shape that matches the locus of the rocking shaft when it reciprocates in a straight line. 5. The slide plate swinging device according to claim 2, wherein the elongated hole is an elongated circle formed by connecting two circles of the same diameter or different diameters with a tangent. 6. The slide plate swinging device according to claim 2, wherein the center of the rotating shaft is located on an extension of the long axis of the elongated hole. 7. The slide plate swinging device according to claim 2, wherein the center of the rotating shaft is not located on an extension of the long axis of the elongated hole.