Swing rotor assembly for centrifuge

Abstract

The present invention relates to a swing rotor assembly for a centrifuge and, more particularly, to a swing rotor assembly for a centrifuge equipped with a bucket fixing part for fixing the position of a bucket to facilitate separation and discharge within a decanting kit after centrifuging samples such as blood or bone marrow inserted into the decanting kit mounted on the bucket of the centrifuge. Provided is a swing rotor assembly for a centrifuge mounted inside a centrifuge case and rotating, wherein the swing rotor assembly comprises: a rotor head part including a U-shaped curved part symmetrically formed to mount a bucket, and a bucket fixing part formed on one side of the bottom surface of the U-shaped curved part to fix the bucket for fixing the position of a decanting kit inclined by centrifugal force; a bucket into which the decanting kit is inserted and mounted, and which is installed on the U-shaped curved part and rotates up and down by centrifugal force according to the rotation of the rotor head part; and a driving part including a rotary shaft part mounted on the central bottom surface of the rotor head part, a power transmission part for transmitting driving force to the rotary shaft part, and a power supply part connected to the rotary shaft part for supplying DC power to the bucket fixing part.

Description

Swing rotor assembly for centrifuge

[0001] The present invention relates to a swing rotor assembly for a centrifuge, and more particularly, to a swing rotor assembly for a centrifuge having a bucket fixing part for fixing the position of a bucket so that a sample such as blood or bone marrow, which is placed in a decanting kit mounted on a bucket of a centrifuge, can be easily separated and discharged within the decanting kit after centrifugation.

[0002] When a suspension containing floating material is left alone, the denser material will gradually sink to the bottom due to gravity, and the less dense material will gradually move to the upper layer. This process is called sedimentation.

[0003] As such, when substances with different densities are mixed, sedimentation occurs, and over time, the mixture can be separated based on the difference in density. The density difference between mixtures increases as gravity, the force that separates the mixture, increases. Therefore, artificially increasing gravity can accelerate sedimentation.

[0004] In other words, by using centrifugal force instead of gravity, the sedimentation phenomenon can be easily accelerated, and this process is called centrifugation. A centrifuge is a machine that uses the principle of centrifugation to separate, purify, and concentrate substances with different components or specific gravity. Depending on the purpose of use, it can be separated into medical use, wastewater treatment, uranium enrichment, production use, and experimental use.

[0005] In particular, medical centrifuges are used to separate components for analysis of blood, urine, saliva, etc. For example, platelet-rich plasma (PRP) obtained by centrifugation of bone marrow or blood refers to a highly enriched plasma component that is richer in platelets than normal bone marrow or blood, and contains various growth factors, which have the effect of healing wounds and regenerating and rebuilding damaged areas. For example, it is used for the purpose of rebuilding damaged areas such as ligaments and cartilage by injecting it, and since it uses the patient's own bone marrow or blood, there are no side effects and the therapeutic effect is fast.

[0006] Based on this technical idea, a centrifugal separator and bucket capable of combining the functions of both a swing rotor and an angle rotor were disclosed in Korean Patent No. 10-1387433, which enables the function of an angle rotor to be implemented in a swing rotor by replacing the bucket appropriately without replacing the entire rotor.

[0007] According to the prior art, the processing capacity can be increased by forming multiple receiving portions in the bucket, and buckets corresponding to various storage containers can be provided by changing the size and shape of the receiving portions in the bucket, and according to these characteristics, it is theoretically possible to simultaneously perform separation by the swing rotor and separation by the angle rotor even if a single centrifugation process is performed in a single swing rotor.

[0008] However, although centrifugation of the sample can be easy due to the advantages explained so far, there was a problem in that the sample had to be discharged while tilted at a certain angle in order to inject the separated components after centrifugation into another space (chamber) inside the sample container, but it was not easy to maintain the angle for discharging the sample.

[0009] To solve this problem, the applicant of the present invention proposed an angle maintenance means using a solenoid valve in Patent No. 2236888.

[0010] However, when using a solenoid valve, there was a problem of severe vibration due to the difference in the weight of the battery, because the solenoid valve and the battery to operate the solenoid valve had to be installed together in the rotor head.

[0011] In addition, because the operating time of the solenoid valve was short, two solenoids had to be used, which made the structure complex, made manufacturing difficult, and increased the manufacturing cost of the centrifuge.

[0012] In order to solve the above problems, the purpose of the present invention is to simplify the structure of a bucket fixing part that maintains the tilt angle of a bucket tilted close to horizontal by centrifugal force when the rotor is rotated, and to provide a swing rotor assembly for a centrifugal separator that can drive the bucket fixing part with constant power without using a battery.

[0013] In order to achieve the above object, the present invention provides a swing rotor assembly for a centrifuge that is mounted inside a centrifuge case and rotates, the swing rotor assembly comprising: a rotor head portion formed with a U-shaped curved portion symmetrically formed for mounting a bucket, and a bucket fixing portion formed on one side of the bottom surface of the U-shaped curved portion to fix the bucket in order to fix the position of a decanting kit tilted by centrifugal force; a bucket into which a decanting kit is inserted and mounted, the bucket being installed in the U-shaped curved portion and rotating up and down by centrifugal force according to the rotation of the rotor head portion; and a driving portion comprising a rotation shaft portion mounted on the central bottom surface of the rotor head portion, a power transmission portion transmitting a driving force to the rotation shaft portion, and a power supply portion connected to the rotation shaft portion to supply DC power to the bucket fixing portion.

[0014] In the present invention, the bucket fixing part is characterized by being formed of an electromagnet that is mounted on one end of the lower surface of a U-shaped curved part and operates by receiving DC power from a power supply part.

[0015] In the present invention, the bucket is characterized by comprising a circular ring into which a decanting kit is inserted and mounted, a pair of ring support plates connected to the lower ends on both sides of the circular ring and rotatably mounted on the U-shaped curved portion, and an attachment protrusion mounted on the ring support plate corresponding to the position of the electromagnet so that the ring support plate can be attached to the electromagnet when the ring support plate is rotated at a certain angle by centrifugal force.

[0016] In the present invention, the power transmission unit is characterized by comprising a driven belt pulley mounted on a rotating shaft to receive rotational force, a drive belt pulley that receives rotational force from a motor and transmits the rotational force to the driven belt pulley, a power transmission belt connecting the driven belt pulley and the drive belt pulley, and a motor that rotates the drive belt pulley.

[0017] In the present invention, the power transmission belt is characterized by being a timing belt or a V-belt.

[0018] In the present invention, the power transmission unit is characterized by being a motor that drives the rotating shaft unit.

[0019] In the present invention, the power supply unit is characterized by being a slip ring mounted on a rotating shaft and supplying DC power to an electromagnet.

[0020] The swing rotor assembly for a centrifuge according to the present invention has the advantage of improving product productivity and reducing unit cost because the structure of the bucket fixing part provided in the rotor head is simple in separating the components of a sample according to the horizontal rotation of the rotor head.

[0021] In addition, the swing rotor assembly for a centrifuge according to the present invention has the advantage of significantly reducing vibration and noise because the bucket fixing part is made of an electromagnet and can be supplied with constant power, making it easy to maintain the balance of the rotor head.

[0022] In addition, the swing rotor assembly for a centrifuge according to the present invention has the advantage of increasing the separation efficiency of a sample separated by centrifugation because the decanting kit can be maintained at a certain angle for a desired period of time by the bucket fixing part.

[0023] Figure 1 is a perspective view of a centrifuge equipped with a swing rotor assembly for a centrifuge according to the present invention.

[0024] Figure 2 is a perspective view of the centrifuge of Figure 1 with its lid open.

[0025] Figure 3 is an exploded perspective view of a swing rotor assembly for a centrifuge installed in the centrifuge of Figure 1.

[0026] Figure 4 is a perspective view of a rotor head portion equipped with a bucket of a swing rotor assembly for a centrifuge according to the present invention.

[0027] Fig. 5 is a rear perspective view of the rotor head with the bucket of Fig. 4 mounted.

[0028] Figure 6 is a perspective view of a bucket of a swing rotor assembly for a centrifuge according to the present invention.

[0029] Figure 7 is a perspective view of the driving unit of the first embodiment of the swing rotor assembly for a centrifuge according to the present invention.

[0030] Figures 8 and 9 are perspective views of the driving unit of Figure 7 with some of the components deleted.

[0031] Fig. 10 is a perspective view showing an operating state in which a bucket part is fixed to a rotor head part according to the present invention.

[0032] Figure 11 is a rear perspective view of Figure 10.

[0033] Fig. 12 is a perspective view of the driving unit of a second embodiment of a swing rotor assembly for a centrifuge according to the present invention.

[0034] Fig. 13 is a perspective view of the driving unit of Fig. 12 with some components deleted.

[0035] Fig. 14 is an exploded perspective view of the driving unit of Fig. 13.

[0036] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings to a degree that those skilled in the art can easily practice the present invention. First, when adding reference numerals to components in the drawings, it should be noted that, as much as possible, identical components are given the same reference numerals even if they are shown in different drawings. In addition, when describing the present invention, if a detailed description of a related known structure or function is judged to obscure the gist of the present invention, the detailed description thereof will be omitted.

[0037]

[0038] FIG. 1 and FIG. 2 are perspective views of a centrifuge (1) equipped with a swing rotor assembly (20) for a centrifuge according to the present invention. As shown in the drawings, the centrifuge (1) is composed of a centrifuge case (10) and a swing rotor assembly (20) mounted on the centrifuge case (10). The centrifuge case (10) is composed of a case (11), a cover (12) covering the case (11), a cylinder device (13) connected to the case (11) and the cover (12) to control the opening and closing of the cover (12), a controller (14) installed on the upper portion of the cover (12), a support plate (15) installed inside the case (11) to support the swing rotor assembly (20), and a support plate (17) supporting the swing rotor assembly (20) from the lower side. The inner side of the support plate (15) further includes an LED light source section (16) that irradiates an LED light source.

[0039] FIG. 3 is an exploded perspective view of the internal components of a centrifuge (1) according to the present invention. As shown in the drawing, an SMPS (Switching Mode Power Supply) (25) and a motor drive (24) are mounted on a support plate (17) as an internal component. A support plate (15) that partitions the interior of the centrifuge (1) is provided on the upper portion of the support plate (17). An LED module (16) is mounted in a circular ring shape on the inner side of the support plate (15). A swing rotor assembly (20) is mounted on the inner side of the ring-shaped LED module (16). The swing rotor assembly (20) is composed of a driving part (23) that penetrates the central hole of the LED module (16), a rotor head part (21) mounted on the upper portion of the driving part (23), and a bucket (22) mounted on the rotor head part (21).

[0040] Figures 4 and 5 are perspective views of the rotor head (21) and bucket (22) of the swing rotor assembly (20) according to the present invention. Figure 4 is a front perspective view and Figure 5 is a rear perspective view. As shown in Figures 4 and 5, the rotor head (21) is composed of a head body (211), a U-shaped curved portion (212) formed symmetrically at four locations of the head body (211) for mounting the bucket (22), and a bucket fixing portion (213) formed on one side of the bottom surface of the U-shaped curved portion (212) for fixing the position of the decanting kit (30) tilted by centrifugal force to fix the bucket (22). The head body (211) is drawn in a '+' shape in the drawing, but may also be formed in a '-' shape. In the '+' shape, four U-shaped curved portions (212) are formed, and in the '-' shape, two U-shaped curved portions (212) are formed. In addition, a through hole (217) may be further formed in the head body (211) to reduce weight. An upper joint groove (215) is formed in the center of the front of the head body (211) to which a fastening member for fixing the driving unit (23) is fastened, and a lower joint groove (216) is formed in the center of the back of the head body (211) to which the shaft joint (2312) of the driving unit (23) is inserted. A shaft joint (2312) is inserted into the lower joint groove (216), and a fastening member such as a bolt (not shown) is used to fix the shaft joint (2312) to the fastening hole (2153) formed in the upper joint groove (215) and penetrating into the lower joint groove (216), thereby connecting the head body (211) to the driving unit (23). A groove cover (214) covers the upper joint groove (215), and a wire penetration hole (2151) is formed in the center of the upper joint groove (215) through which a wire (2344) connected to the upper side from the rotation shaft (2311) passes, and a wire discharge hole (2152) is formed on the outside of the fastening hole (2153) so that the wire (2344) can be connected to the bucket fixing part (213) formed on the bottom surface of the U-shaped curved part (212).As illustrated in Fig. 4, the wire (2344) is connected upward through the shaft penetration hole (2313) formed in the center of the rotation shaft (2311), and the wire (2344) is connected to the electromagnet (2131) of the bucket fixing part (213) through the wire discharge hole (2152) in the upper joint groove (215). A bucket (22) is installed in the U-shaped curved part (212). Accordingly, a hinge shaft hole (2121) is provided on both sides of the U-shaped curved part (212) to which a hinge shaft (not shown) is mounted so that the bucket (22) can rotate. The bucket (22) is mounted in the hinge shaft hole (2121) so as to be rotatably connected by the hinge shaft. Accordingly, when the rotor head part (21) rotates, the bucket (22) can be lifted upward by centrifugal force. A bucket fixing portion (213) is formed on one side of the bottom surface of the U-shaped curved portion (212). The bucket fixing portion (213) is composed of an electromagnet (2131) that is supplied with power from a power supply portion (234) through a wire (2344) to fix the bucket (22) at a certain angle so that the bucket (22) can be maintained in a state of being rotated at a certain angle, and a wire fixing groove (2132) in which a wire connected to the electromagnet (2131) is fixed. The electromagnet (2131) is inserted and mounted in a groove formed on the bottom surface of the U-shaped curved portion (212), and a fastening member is fastened to a fastening hole (2122) formed on the front surface of the U-shaped curved portion (212) so that the electromagnet (2131) is fixedly mounted. In addition, a fixing groove cover (2134) is fastened to cover the wire fixing groove (2132) to prevent the wire from coming off.

[0041] Fig. 6 illustrates a bucket (22). As shown in the drawing, the bucket (22) is composed of a circular ring (221) into which a decanting kit (30) is inserted and mounted, a pair of ring support plates (222) connected to the lower ends on both sides of the circular ring (221) and rotatably mounted on a U-shaped curved portion (212), and an attachment protrusion (223) attached to an electromagnet (2131) so as to protrude outward from one side of the ring support plate (222) so that the bucket (22) can be fixed in position when the ring support plate (222) is rotated by a certain angle by centrifugal force caused by the rotation of the rotor head (21). A decanting kit (30) is inserted into a hole (2211) of a circular ring (221), and a ring support plate fastening hole (2212) is formed in the circular ring (221) so as to be tilted outward, and the circular ring (221) and the ring support plate (222) are connected through the ring support plate fastening hole (2212). When the attachment protrusion (223) mounted on one side of the ring support plate (222) is attached to an electromagnet (2131), the lower side of the decanting kit (30) is positioned higher than the upper side so that the centrifuged sample is introduced from the first chamber (31) of the decanting kit to the second chamber (32). Accordingly, the portion of the ring support plate (222) to which the attachment protrusion (223) is attached is formed to be inclined at a certain angle (θ) so that the lower side can be positioned higher than the upper side. Specifically, the decanting kit (30) is composed of a first chamber (31) into which a sample to be centrifuged, such as blood, is initially introduced, a float (not shown) inserted into the inside of the first chamber (31) and moved up and down by buoyancy, and a second chamber (32) into which the upper part of the float of the centrifuged sample is introduced by attaching an attachment protrusion (223) by the magnetic force of an electromagnet (2131) with power supplied. The attachment protrusion (223) is attached to the electromagnet (2131) when DC power is applied to the electromagnet (2131) while the bucket (22) is tilted by the centrifugal force, thereby generating a magnetic force. When the attachment protrusion (223) is attached to the electromagnet (2131), the sample on the upper part of the float that has been centrifuged in the first chamber (31) can be introduced into the second chamber (32) and separated.

[0042] Figures 7 to 9 illustrate drawings of a driving unit (23). The driving unit (23) includes a rotating shaft portion (231) mounted on the central lower surface of the rotor head portion (21), a power transmission portion (232) for transmitting driving force to the rotating shaft portion (231), and a power supply portion (234) connected to the rotating shaft portion (231) for supplying DC power to the bucket fixing portion (213). The power transmission portion (232) is mounted on a fixed plate (233), and a cap (235) having a hole formed in the center is mounted on the upper portion of the fixed plate (233). A shaft fixing plate (236) for fixing the rotating shaft portion (231) is mounted on the inside of the cap (235), and the rotating shaft portion (231) is supported by a bearing portion (239) and mounted at the center of the shaft fixing plate (236). The shaft fixing plate (235) is fixed at the upper part to the inside of the cap (235) and at the lower part by a support (237) mounted on the upper part of the fixing plate (233). The rotating shaft portion (231) is composed of a rotating shaft (2311), an axial joint (2312) formed at the upper end of the rotating shaft (2311) and inserted into the lower joint groove (216) of the rotor head portion (21), a wire through hole (2313) formed at the center of the rotating shaft (2311) and through which a wire (2344) from a power supply unit (234) passes, and a rotating joint (2314) connected to the power supply unit (234) at the lower end of the rotating shaft (2311). A fastening hole (23121) is formed in the shaft joint (2312), and a fastening member is fastened through the upper joint groove (215) of the rotor head portion (21) to connect the rotating shaft portion (231) and the rotor head portion (21). In addition, a power transmission portion (232) is connected to the rotating shaft (2311) to transmit rotational force to the rotating shaft portion (231). The power transmission portion (232) is composed of a driven pulley (2321) mounted on the rotating shaft (2311), a driving pulley (2322) that transmits rotational force to the driven pulley (2321), and a motor (2324) that transmits rotational force to the driving pulley (2322). The driving pulley (2322) is mounted on the motor shaft (2325) of the motor (2324) to transmit the rotational force of the motor (2325) to the driven pulley (2321).The means for transmitting rotational power from the driving pulley (2322) to the driven pulley (2321) is a belt (2323). A timing belt or a V-belt can be used as the belt (2323). A slip ring is used as the power supply unit (234). The slip ring is usually composed of a non-rotating stator (2342) and a rotating rotor (2343). An incoming wire (2341) is connected to the stator (2342), and power is supplied to the rotor (2343). The wire (2344) connected from the rotor (2343) is connected to the electromagnet (2131) of the bucket fixing unit (213) through a wire penetration hole (2313) formed in the center of the rotation shaft (2311). The slip ring can be a contact type or a non-contact type. The fixed plate (233) is fixed to the support plate (17) by a fixed plate support member (238).

[0043] Figures 10 and 11 illustrate that the rotor head (21) and the bucket (22) are rotated by centrifugal force and then fixed in position by an electromagnet. As shown in the drawings, when the bucket (22) is tilted at a certain angle by the centrifugal force, power is applied to the electromagnet (2131) to generate a magnetic force. When power is applied to the electromagnet (2131), a magnetic force is generated, and the attachment protrusion (223) of the bucket (22) is attached to the electromagnet (2131) by the magnetic force. When the attachment protrusion (223) is attached to the electromagnet (2131), the decanting kit (30) is tilted at a certain angle (θ), so that the centrifuged samples move from the first chamber (31) to the second chamber (32).

[0044] Figures 12 to 14 are drawings of a driving unit (23') of a second embodiment of a swing rotor assembly (20). As shown in the drawings, the driving unit (23') includes a rotating shaft portion (231') mounted on the central lower surface of the rotor head portion (21), a power transmission portion (232') that transmits driving force to the rotating shaft portion (231'), and a power supply portion (234') that is connected to the rotating shaft portion (231') and supplies DC power to the bucket fixing portion (213). The power transmission portion (232') is mounted on a fixed plate (233'), and a cap (235') having a hole formed in the center is mounted on the upper portion of the fixed plate (233'). A shaft fixing plate (236') for fixing a rotating shaft (231') is mounted on the inside of the cap (235'), and a power transmission unit (232') is mounted on the central bottom surface of the shaft fixing plate (236'). The power transmission unit (232') is configured as a motor and transmits rotational power to the rotating shaft (231') through the motor. A shaft joint (2312') fixed to the rotating shaft (2311') is mounted so as to protrude upward through a through hole (2361') formed in the center of the shaft fixing plate (236'). The upper portion of the shaft fixing plate (236') is fixed to the inside of the cap (235'), and the lower portion is fixed by a support (237') mounted on the upper portion of the fixing plate (233'). The rotating shaft (231') is composed of a rotating shaft (2311') connected to a motor (232'), a shaft joint (2312') mounted on the upper end of the rotating shaft (2311') and inserted into the lower joint groove (216) of the rotor head (21), and a pair of wire penetration holes (2313') formed on both sides of the center of the rotating shaft (2311') and through which a pair of wires (2344') from the power supply unit (234') pass. The power supply unit (234') is connected to the lower end of the rotating shaft (2311'). A fastening hole (23121') is formed in the shaft joint (2312'), and a fastening member is fastened through the upper joint groove (215) of the rotor head unit (21), thereby connecting the rotating shaft unit (231') and the rotor head unit (21). The fixed plate (233') is fixed to the support plate (17) by a fixed plate support (238'). A slip ring is used for the power supply unit (234').A slip ring is typically composed of a non-rotating stator and a rotating rotor, and since the specific configuration is the same as the power supply unit (234) of the driving unit (23) of the first embodiment, the specific configuration is omitted. As described above, an incoming wire is connected to the stator, and power is supplied to the rotor. A wire (2344') connected from the rotor is connected to an electromagnet (2131) of a bucket fixing unit (213) through a wire penetration hole (2313') formed on both sides of the center of the rotation shaft (2311'). A contact type or a non-contact type slip ring can be used.

[0045]

[0046] The operation of the swing rotor assembly (20) for a centrifuge according to the present invention, which is configured as described above, is specifically described as follows.

[0047] First, the swing rotor assembly (20) of the present invention, as shown in FIG. 2, is mounted in a housing (10) as a component of a centrifuge (1), is electrically connected to the controller (14) of the centrifuge (1), and enables horizontal rotation of the rotor head (21) linked to the device operation according to the operation of the centrifuge (1), thereby enabling component separation (centrifugation) of a sample contained in a decanting kit (30) accommodated and mounted in a bucket (22) of the rotor head (21).

[0048] To explain the operation of the swing rotor assembly (20) of the present invention, a decanting kit (30) is inserted into the bucket (22) shown in the drawing, and an appropriate amount of sample is injected in advance into the first chamber (31) of the decanting kit (30).

[0049] When the decanting kit (30) is accommodated in the bucket (22), the motor (2324, 232') is driven. The rotor head (21) rotates by the driving of the motor, and accordingly, the sample injected into the interior of the decanting kit (2) is centrifuged due to the density difference. The centrifuged sample is divided into upper and lower parts due to the density difference, and a floater (23) is positioned at the boundary line.

[0050] When centrifugation is completed, the bucket (200) is maintained at a certain angle by the bucket fixing member (213), and is tilted at a certain angle for a certain period of time so that the desired sample centrifuged at the top of the floater can be moved from the first chamber (31) of the decanting kit (30) to the second chamber (32).

[0051] In this way, the components of the sample contained in the decanting kit (30) mounted on each of the buckets (22) are separated by their density differences. For example, in the case of blood, the red blood cells, which are the component with the highest density, are concentrated in the lower part of the first chamber (31), followed by the buffy coat composed of white blood cells and platelets with the next highest density, and finally, the plasma with the lowest density is concentrated in the upper part of the float. The remaining components, excluding the red blood cells, are located in the upper part of the float.

[0052] The centrifugation step may be performed more than once. If necessary, even if the sample that has been centrifuged in the first stage is transferred to the second chamber (32), red blood cell components may enter the second chamber (32), so a second centrifugation may be performed to separate the red blood cells and the remaining components.

[0053] When component separation is complete, the decanting kit (30) is removed and the sample in the second chamber (32) of the decanting kit (30) is extracted.

[0054]

[0055] The above description is merely an illustrative description of the technical idea of ​​the present invention, and those skilled in the art will appreciate that various modifications, changes, and substitutions may be made without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical idea of ​​the present invention, but rather to explain it, and the scope of the technical idea of ​​the present invention is not limited by these embodiments and the accompanying drawings. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within a scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

[0056] The present invention relates to a swing rotor assembly for a centrifuge, which is equipped with a bucket fixing part for fixing the position of the bucket so that a sample such as blood or bone marrow, which is placed in a decanting kit mounted on a bucket of a centrifuge, can be easily separated and discharged within the decanting kit after centrifugation, and is an invention with high industrial applicability.

Claims

1. In a swing rotor assembly for a centrifuge that is mounted inside the centrifuge case and rotates, The above swing rotor assembly, A rotor head portion comprising a U-shaped bend formed symmetrically for mounting a bucket, and a bucket fixing portion formed on one side of the lower surface of the U-shaped bend to fix the bucket in order to fix the position of the decanting kit tilted by centrifugal force; A bucket having a decanting kit inserted and installed in the U-shaped curved section and rotating up and down by centrifugal force according to the rotation of the rotor head section; and A driving unit comprising a rotating shaft portion mounted on the central lower surface of the rotor head portion, a power transmission portion transmitting driving force to the rotating shaft portion, and a power supply portion connected to the rotating shaft portion and supplying DC power to the bucket fixing portion; A swing rotor assembly for a centrifuge, characterized by comprising:

2. In paragraph 1, The above bucket fixing part is, A swing rotor assembly for a centrifuge, characterized in that it comprises an electromagnet mounted on one end of the lower surface of the U-shaped curved section and operated by receiving DC power from the power supply section.

3. In paragraph 2, The above bucket is, A swing rotor assembly for a centrifuge, characterized by comprising: a circular ring into which the decanting kit is inserted and mounted; a pair of ring support plates connected to the lower ends of both sides of the circular ring and rotatably mounted on the U-shaped curved portion; and an attachment protrusion mounted on the ring support plate corresponding to the position of the electromagnet so that the ring support plate can be attached to the electromagnet when the ring support plate is rotated by a certain angle due to centrifugal force.

4. In paragraph 3, The above power transmission unit, A swing rotor assembly for a centrifuge, characterized by comprising: a driven belt pulley mounted on the rotating shaft to receive rotational power; a drive belt pulley that receives rotational power from a motor and transmits the rotational power to the driven belt pulley; a power transmission belt connecting the driven belt pulley and the drive belt pulley; and a motor that rotates the drive belt pulley.

5. In paragraph 4, A swing rotor assembly for a centrifuge, characterized in that the power transmission belt is a timing belt or a V-belt.

6. In paragraph 3, The above power transmission unit, A swing rotor assembly for a centrifuge, characterized in that it is a motor that drives the above-mentioned rotating shaft part.

7. In paragraph 4 or paragraph 6, The above power supply unit, A swing rotor assembly for a centrifuge, characterized in that it is a slip ring mounted on the above rotating shaft and supplies DC power to the electromagnet.

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