JPH0560542U - Protective cover for centrifuge sample container - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the time and effort required during the centrifugation test and prevent damage to the sample container. [Structure] The protective cover 1 is composed of two upper side parts 1a and 1b having the same shape and a substantially cylindrical lower part 1c.
It has a divided structure. The lower portion 1c has a hole 7 into which the large-diameter portion 11a of the sample container 11 is inserted, and the lower portion 1c
A cork member 9 is loosely fitted in c. Upper side 1a
Is a large-diameter portion 3a and two semi-disc-shaped collars 5a, which will be described later.
6a, and a groove 4a that substantially matches the outer shape of the upper part of the sample container 11 and the half of the small diameter part 11b. There is. The outer diameters of the lower portion 1c, the large diameter portion 3a, and the two collars 5a and 6a described above are the same as those of the sample container holder 14
It is slightly smaller than the inner diameter of.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cover for protecting a sample container (rotating container) for a centrifuge.

[0002]

[Prior Art]

 The sample container (rotary container) for the centrifuge is generally made of transparent glass (sometimes made of transparent plastic). For this reason, when performing a centrifugation test using this sample container, first put a predetermined amount of reagent in the sample container, then wrap the tissue paper around the outer periphery of the sample container and make a cylindrical sample. Insert the tissue paper under the container holder as well. Then, after inserting the sample container around which the tissue paper is wound into the sample container holder, the tissue paper is further packed in the sample container holder. After that, the centrifuge is started, and while confirming that the sample container is not damaged, the rotation speed of the rotary table (rotor) of the centrifuge is gradually increased until the specified rotation speed is reached.

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional technology, it is necessary to wrap the tissue paper around the outer periphery of the sample container and insert the tissue paper into the holder for the sample container each time the centrifugation test is performed, which is troublesome. ..

Further, since the sample container is simply protected by utilizing the cushioning property of the tissue paper, the sample container may be damaged during the centrifugation test especially when the winding condition of the tissue paper is rough and uneven. The centrifugal force that acts on it strongly collides against the inner wall of the sample container holder and presses it, which causes the sample container to be damaged by the impact force, and the reagents inside the sample container are scattered and adhere to your hands. However, there is a problem that it is dangerous.

The present invention has been made in view of the above problems, and a protective cover for a centrifuge sample container is provided which can reduce the time and effort during a centrifugation test and prevent damage to the sample container. The purpose is to provide.

Further, in the above-mentioned conventional technique, the bottom of the sample container may collide with the bottom of the sample container holder due to the vibration in the axial direction, and the bottom of the sample container may be lost.

In addition to the above object, the present invention has an object of providing a protective cover for a sample container for a centrifuge, which can surely prevent loss of the bottom portion of the sample container.

[0008]

[Means for Solving the Problems]

 A protective cover for a centrifuge sample container of the present invention for achieving the above object is a cover for protecting a centrifuge sample container, which is detachably fitted onto the sample container. Further, it has an outer diameter substantially equal to the inner diameter of the sample container holder fitted and inserted in the sample container holder of the centrifuge.

Further, a cushion member is interposed between the bottom surface of the sample container and the bottom portion of the protection cover in a state where the protection cover is fitted onto the sample container.

Further, the protective cover having a small hole at the bottom or the material of the protective cover may be Teflon.

[0011]

[Action]

 In the device according to claim 1 configured as described above, when performing the centrifugation test, first, a predetermined amount of reagent is put into the sample container, and then the protective cover is fitted onto the sample container, , Insert this protective cover together with the sample container into the holder for the sample container. After that, the centrifuge is started, and while confirming that the sample container is not damaged, the rotation speed of the rotary table (rotor) of the centrifuge is gradually increased until the specified rotation speed is reached. At this time, the sample container is securely fixed, and the centrifugal force acting on the sample container pushes it against the inner wall of the sample container holder through the protective cover, and the impact force does not act, so the sample container is not damaged.

According to the second aspect of the invention, since the axial vibration of the sample container is absorbed by the cushion member, the bottom of the sample container is not damaged.

[0013]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings.

First Embodiment FIG. 1 is a front view of a protective cover for a centrifuge sample container of the present invention before assembly of a first embodiment, and FIG. 2 is a front view of the sample container according to the first embodiment. FIG. 3 and FIG. 3 are front views showing a state in which the protective cover shown in FIG. 1 is fitted onto the sample container shown in FIG.

First, the sample container according to the present embodiment will be described. As shown in FIG. 2, the sample container 11 is a two-stage cylindrical transparent glass Bab cup bottle having a large diameter portion 11a, a small diameter portion 11b, and a tapered portion 11c as a mouth portion in order from the bottom. The small diameter portion 11b is provided with a scale 11d.

Next, the protective cover of the sample container for the centrifuge of the present embodiment will be described with reference to FIGS. 1 and 3.

The protective cover 1 has a three-part structure composed of two upper side parts 1a and 1b and a substantially cylindrical lower part 1c, and these are divided by cutting after integral molding. Is also made of Teflon.

The lower portion 1c has a hole 7 into which the large-diameter portion 11a of the sample container is inserted, and a small hole 8 is formed in the bottom portion. A disc-shaped cork member 9 as a cushion member having a small hole 10, which will be described later, is loosely fitted in the lower portion 1c.

Since the two upper side portions 1a and 1b have the same shape, only one upper side portion 1a will be described.

The upper side portion 1a is composed of a large diameter portion 3a and a small diameter portion 2a having two semi-disc shaped flanges 5a and 6a which will be described later. Further, the upper side portion 1a is formed with a groove 4a which substantially conforms to the outer shape of the upper portion of the large diameter portion 11a of the sample container 11 and approximately half of the small diameter portion 11b. The outer diameters of the lower portion 1c, the large diameter portion 3a, and the two collars 5a and 6a described above are slightly smaller than the inner diameter of the sample container holder described later.

As shown in FIG. 3, the lower portion 1c of the protective cover 1 is fitted onto the large diameter portion 11a of the sample container 11 from below, and the two upper side portions 1a and 1b are attached to the sample container 11a. When the upper part of the large-diameter portion 11a of 11 and the small-diameter portion 11b are externally fitted from the sides thereof, a minute gap 12 as a cutting allowance is provided between both end faces in the circumferential direction of the two upper side parts 1a and 1b. (One of the gaps is not shown) is formed.

Next, using the protective cover of the present embodiment, as an example, a process of performing centrifugation in an acid decomposition test will be described. FIG. 4 is a schematic perspective view of the rotating part of the centrifuge, and FIG. 5 is a vertical cross-sectional view of the aluminum sample container holder in which the sample container is mounted, shown in FIG.

First, a predetermined amount of mineral oil (not shown) as a sample is put in the sample container 11 shown in FIG. 2, and then a predetermined amount of concentrated sulfuric acid (not shown) is further put in the sample container 11, The sample container 11 is shaken well and left at room temperature for 5 minutes. After that, distilled water (not shown) is put into the sample container 11 until the scale reaches 5.0, the sealing member 13 as a glass stopper is attached to the taper portion 11c, and then the sample container 11 is temporarily inverted to the original state. Return to. This operation of turning upside down is repeated 10 times.

As shown in FIG. 3, a protective cover 1 composed of two upper side portions 1a and 1b and a lower portion 1c is externally fitted to and mounted on the sample container 11. As shown in FIG. 5, it is fitted in the sample container holder 14 which is rotatably supported by the rotary table 15 via the mounting portion 14a. Then, the collars 5a, 5b, 6a, 6b are pushed toward the center by the inner wall of the sample container holder 14, and the gap 12 between the two upper side portions 1a, 1b is reduced. Since the output shaft of a motor (not shown) is connected to the rotor mounting hole 15a of the rotary table 15, the rotary table 15 is rotated in the arrow X direction by the driving force of the motor.

After that, the motor is started, and while confirming that the sample container 11 is not damaged, the rotation speed of the rotary table 15 is gradually increased to the specified rotation speed of 1500 rpm, and the rotation table 15 is specified for about 20 minutes. Spin at the speed of rotation and perform centrifugation. At this time, the sample container 11 is securely fixed, and is pressed against the inner wall of the sample container holder 14 via the protective cover 1 by the centrifugal force acting on it, and the impact force does not act, so that the sample container 11 is not damaged. Further, since the axial vibration of the sample container 11 is absorbed by the cork member 9, it is possible to reliably prevent the bottom portion of the sample container 11 from being damaged.

After centrifuging, the sample container 11 together with the two upper side portions 1 a and 1 b of the protective cover 1 is pulled out from the sample container holder 14. Then, the sample container holder 14 is turned upside down, and the lower portion 1c of the protective cover 1 is taken out from the sample container holder 14. At this time, since the small hole 8 is formed in the lower portion 1c, the taking-out can be easily performed.

In the present embodiment, the outer diameter of the lower portion 1c, the large diameter portion 3a, and the collars 5a, 5b, 6a, 6b may be set equal to the inner diameter of the sample container holder.

Second Embodiment As shown in FIG. 6, the protective cover 1X of the centrifuge sample container of the present embodiment is applied to a test tube as a sample container 11X. It has a hole 1Y into which 11X is inserted and has a cylindrical shape without a collar. The outer diameter of the protective cover 1X is slightly smaller than the inner diameter of the sample container holder 14X, and the outer peripheral surface of the protective cover 1X is in sliding contact with the inner surface of the sample container holder 14X evenly. It is inserted inside. Since the other structure is almost the same as that of the first embodiment, the description thereof will be omitted.

In this embodiment, the outer diameter of the protective cover may be set equal to the inner diameter of the sample container holder.

In each of the above-mentioned embodiments, the protective cover may be made of Teflon, vinyl chloride, rubber or the like, and rubber or thick cloth may be used as the cushion member.

[0031]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects.

According to the first aspect of the present invention, in the centrifugal test, it is not necessary to wind the tissue paper around the sample container or insert the sample paper into the sample container holder as in the conventional case. Since it only needs to be fitted onto the sample container, the labor is reduced, the sample container is not damaged, and the danger to the human body due to reagents and the like can be prevented.

According to the second aspect of the invention, in addition to the above effects, the vibration of the sample container in the axial direction is absorbed by the cushion member, so that the bottom of the sample container can be reliably prevented from being damaged.

According to the third aspect of the invention, in addition to the above effects, the protective cover can be easily taken out from the sample container holder.

According to the fourth aspect of the present invention, the above effect can be obtained very easily by forming the protective cover with Teflon which is easy to process and has cushioning properties.

[Brief description of drawings]

FIG. 1 is a front view of a protective cover for a sample container for a centrifuge according to a first embodiment of the present invention before assembly.

FIG. 2 is a front view of the sample container according to the first embodiment.

FIG. 3 is a front view with most of the cross section showing a state in which the protective cover shown in FIG. 1 is externally fitted to the sample container shown in FIG.

4 shows a sample container having the protective cover shown in FIG.
It is a schematic perspective view of the rotating part of the centrifuge, showing the state of being mounted on the sample container holder of the centrifuge.

5 is a vertical cross-sectional view of the sample container holder shown in FIG.

FIG. 6 is a view similar to FIG. 5 according to the second embodiment of the protective cover of the centrifuge sample container of the present invention.

[Explanation of symbols]

 1.1X Protective cover 1a, 1b Upper side part 1c Lower part 1Y Hole 2a, 2b Small diameter part 3a, 3b Large diameter part 4a, 4b Groove 5a, 5b, 6a, 6b Collar 7 hole 8, 8X, 10, 10X Small hole 9,9X Cork member 11,11X Sample container (rotating container) 11a Large diameter part 11b Small diameter part 11c Tapered part 11d Scale 12 Gap 13,13X Sealing member 14,14X Sample container holder 14a, 14aX Mounting part 15 Rotating table (rotor ) 15a Rotor mounting hole

Claims (4)

[Scope of utility model registration request] 1. A cover for protecting a sample container for a centrifuge, which is detachably fitted onto the sample container and is fitted into a sample container holder of the centrifuge. A protective cover for a centrifuge sample container having an outer diameter substantially equal to the inner diameter of the sample container holder. 2. The sample for a centrifuge according to claim 1, wherein a cushion member is interposed between a bottom surface of the sample container and a bottom portion of the protective cover in a state where the protective cover is fitted onto the sample container. Container protective cover. 3. The protective cover for a centrifuge sample container according to claim 1, wherein a small hole is formed in the bottom of the protective cover. 4. The protective cover for a centrifuge sample container according to claim 1, wherein the material of the protective cover is Teflon.