CN220778839U - Non-contact magnetic driver - Google Patents
Non-contact magnetic driver Download PDFInfo
- Publication number
- CN220778839U CN220778839U CN202322019868.3U CN202322019868U CN220778839U CN 220778839 U CN220778839 U CN 220778839U CN 202322019868 U CN202322019868 U CN 202322019868U CN 220778839 U CN220778839 U CN 220778839U
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- Prior art keywords
- magnet
- contact magnetic
- sleeve
- rotating shaft
- end cover
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- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 6
- 239000010979 ruby Substances 0.000 claims description 3
- 229910001750 ruby Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 2
- 239000008280 blood Substances 0.000 abstract description 14
- 210000004369 blood Anatomy 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 3
- 208000015181 infectious disease Diseases 0.000 abstract description 3
- 210000001015 abdomen Anatomy 0.000 abstract description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 5
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- 206010019280 Heart failures Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 210000003815 abdominal wall Anatomy 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002054 transplantation Methods 0.000 description 1
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model provides a non-contact magnetic driver, and belongs to the technical field of medical appliances. It solves the problems of temperature rise of blood pump, belly percutaneous cable infection and the like, and increases the size of blood pump implanted in human body. The non-contact magnetic driver comprises a rotor, wherein the rotor comprises a rotating shaft, a first magnet, a silicon steel sheet, a coil and a second magnet, two ends of the rotating shaft are erected inside a shell and are rotationally connected with the shell, the first magnet and the second magnet are sleeved on the periphery of the rotating shaft and are fixedly connected with the rotating shaft, a second sleeve is arranged between the first magnet and the second magnet, the second sleeve is sleeved on the periphery of the rotating shaft and is fixedly connected with the rotating shaft, the coil is sleeved on the periphery of the second magnet, and the silicon steel sheet is sleeved on the outside of the coil. The utility model has the advantages of reducing eddy effect, reducing temperature rise and the like.
Description
Technical Field
The utility model belongs to the technical field of medical appliances, and relates to a non-contact magnetic driver, in particular to a non-contact magnetic driver for external driving of an artificial heart blood pump.
Background
The incidence of cardiovascular diseases is on an increasing trend year by year, wherein heart failure is a disease which seriously threatens the life safety of patients, and the main treatment means of heart failure is heart transplantation or artificial heart auxiliary treatment at present.
The artificial heart has been studied for decades, and products are marketed both at home and abroad. The existing artificial heart products on the market basically adopt a wired driving mode, namely, the artificial heart products enter the body from the abdominal wall through a cable and are connected to a blood pump in the body to supply power for the blood pump so as to support the operation of the blood pump. The coil for driving the blood pump rotor is arranged in the body, so that the temperature rise of the blood pump, the infection of an abdomen percutaneous cable and the like are inevitably caused, and meanwhile, the size of the blood pump implanted in the body is increased due to the existence of the in-vivo driving coil.
Disclosure of Invention
The utility model aims at solving the problems in the prior art, designs a non-contact magnetic driver outside a blood pump body, adopts non-contact driving of an external magnetic field as a driving device of the blood pump, and fundamentally overcomes the defects that the prior electric driving needs a percutaneous leading-in channel, a heating component for realizing energy conversion exists in the body and the like. The proposal only needs to implant the blood pump into the body, cancels the driving coil of the blood pump in the body, reduces the total amount of foreign matters implanted into the body, greatly reduces the volume of the implanted device, and fundamentally solves the problem of temperature rise caused by the driving coil of the blood pump in the body and the problem of infection caused by a percutaneous cable.
The aim of the utility model can be achieved by the following technical scheme: the utility model provides a non-contact magnetic force driver, its characterized in that includes the casing and sets up in the inside rotor of casing, the rotor include rotation axis, first magnet, silicon steel sheet, coil, second magnet, the both ends of rotation axis erect in the casing inside and with casing swivelling joint, first magnet and second magnet cover locate the periphery of rotation axis and with rotation axis fixed connection, first magnet and second magnet between be provided with the second sleeve, second sleeve cover locate the periphery of rotation axis and with rotation axis fixed connection, the periphery of second magnet is located to the coil cover, the silicon steel sheet cover locate the outside of coil.
The working principle of the utility model is as follows: the magnetic field exists around the permanent magnet, and the magnetic force can be transmitted in a contactless manner due to the existence of the magnetic field, so that the permanent magnet is in the form of like poles repel and opposite poles attract. The basic structure of a contactless power transmission system of an artificial heart driven from outside the body by a magnetic field is two cylindrical magnets at a certain distance, and the magnetic coupling force between the magnets is the basis of energy transmission. Because the rotor is formed by integrally assembling the first magnet, the second sleeve and the rotating shaft, the dynamic balance test can be integrally completed, thereby ensuring the dynamic balance precision of the rotor and reducing the vibration of the system.
In the non-contact magnetic driver, bearings are arranged at two ends of the rotating shaft, and the rotor is connected with the shell through the bearings.
In the non-contact magnetic driver, a first sleeve is arranged between the first magnet and the bearing, a first sleeve is also arranged between the second magnet and the bearing, and the first sleeve is sleeved on the outer periphery of the rotating shaft and fixedly connected with the rotating shaft.
In the above-mentioned non-contact magnetic driver, the casing include the shell and set up respectively in the first end cover and the second end cover at shell both ends, first end cover and second end cover all seted up and supply the bearing card to go into and fixed spread groove.
In the above-mentioned non-contact magnetic driver, the housing further includes a third end cover, the third end cover is located at a side of the first end cover away from the rotor, and the first end cover and the third end cover are buckled to form a cavity.
In the above-mentioned non-contact magnetic driver, the third end cover is provided with a clamping ring, and the outer peripheral wall of the clamping ring is abutted with the inner peripheral wall of the first end cover so that the third end cover is buckled with the first end cover.
In the above-mentioned non-contact magnetic driver, the first end cover and the second end cover are both provided with the connecting ring, the outer peripheral wall of the connecting ring and the inner peripheral wall of the shell are abutted so that the first end cover and the second end cover are both fixedly connected with the shell.
In the above non-contact magnetic driver, the second magnet is a ru-fe-b magnet.
In the above non-contact magnetic driver, the rotation shaft is a ceramic shaft.
In the above non-contact magnetic driver, the bearing is a ceramic ball bearing or a ruby sliding bearing.
In the non-contact magnetic driver, the coil is an air cup coil.
In the above non-contact magnetic driver, the housing is made of a high-strength non-metal material, and the first sleeve and the second sleeve are made of a non-metal material.
Compared with the prior art, the utility model has the advantages of ensuring the dynamic balance precision of the rotor, reducing the vibration of the system and reducing the heating.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure, 1, a first end cover; 2. a housing; 3. a bearing; 4. a first magnet; 5. a rotation shaft; 6. a silicon steel sheet; 7. a coil; 8. a second magnet; 9. a second end cap; 10. a first sleeve; 11. a third end cap; 12. a second sleeve; 13. a rotor; 14. a housing; 15. a connecting ring; 16. and (5) clamping the ring.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
As shown in fig. 1, the non-contact magnetic driver comprises a housing 14 and a rotor 13 arranged in the housing 14, wherein the rotor 13 comprises a rotating shaft 5, a first magnet 4, silicon steel sheets 6, a coil 7 and a second magnet 8, two ends of the rotating shaft 5 are erected in the housing 14 and are rotationally connected with the housing 14, the first magnet 4 and the second magnet 8 are sleeved on the outer periphery of the rotating shaft 5 and are fixedly connected with the rotating shaft 5, a second sleeve 12 is arranged between the first magnet 4 and the second magnet 8, the second sleeve 12 is sleeved on the outer periphery of the rotating shaft 5 and is fixedly connected with the rotating shaft 5, the coil 7 is sleeved on the outer periphery of the second magnet 8, and the silicon steel sheets 6 are sleeved on the outer part of the coil 7.
Further, the bearings 3 are arranged at two ends of the rotating shaft 5, the rotor 13 is connected with the shell 14 through the bearings 3, and the rotor 13 is supported by the double bearings 3, so that system vibration and noise are effectively reduced.
Further, a first sleeve 10 is provided between the first magnet 4 and the bearing 3, and a first sleeve 10 is also provided between the second magnet 8 and the bearing 3, and the first sleeve 10 is fixedly connected to the rotary shaft 5 by being fitted around the outer peripheral portion of the rotary shaft 5.
Further, the housing 14 includes a casing 2, a first end cap 1 and a second end cap 9 disposed at two ends of the casing 2, and the first end cap 1 and the second end cap 9 are provided with connecting grooves for the bearing 3 to be clamped and fixed.
Further, the housing 14 further includes a third end cover 11, the third end cover 11 is located on a side of the first end cover 1 away from the rotor 13, and the first end cover 1 and the third end cover 11 are buckled to form a cavity.
Further, the third end cover 11 is provided with a clamping ring 16, and the outer peripheral wall of the clamping ring 16 is abutted with the inner peripheral wall of the first end cover 1 so that the third end cover 11 is buckled with the first end cover 1.
Further, the first end cover 1 and the second end cover 9 are respectively provided with a connecting ring 15, and the outer peripheral wall of the connecting ring 15 is abutted with the inner peripheral wall of the shell 2 so that the first end cover 1 and the second end cover 9 are fixedly connected with the shell 2.
Further, the second magnet 8 is a ru-fe-b magnet, such as an N52 magnet, and has the advantages of high magnetic field strength, increased driving distance and driving stability.
Further, the rotary shaft 5 is a ceramic shaft.
Further, the bearing 3 is a ceramic ball bearing or a ruby sliding bearing.
Further, the coil 7 is an air-core cup coil 7, and has the advantages of no tooth slot effect, small armature inductance and good heat dissipation condition of the winding, and the air-core cup coil 7 winding matched with the silicon steel sheet 6 driver stator has the advantages of high power density, small volume and high efficiency.
Further, the housing 14 is made of a high-strength non-metal material, the first sleeve 10 and the second sleeve 12 are made of a non-metal material, and the non-metal material is carbon fiber or steel, so that the advantages of reducing eddy current effect and reducing temperature rise are achieved.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Although a number of terms are used more herein, the use of other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.
Claims (10)
1. The utility model provides a non-contact magnetic force driver, its characterized in that includes casing (14) and sets up in inside rotor (13) of casing (14), rotor (13) include rotation axis (5), first magnet (4), silicon steel sheet (6), coil (7), second magnet (8), the both ends of rotation axis (5) erect in casing (14) inside and with casing (14) swivelling joint, first magnet (4) and second magnet (8) cover locate the periphery portion of rotation axis (5) and with rotation axis (5) fixed connection, first magnet (4) and second magnet (8) between be provided with second sleeve (12), second sleeve (12) cover locate the periphery portion of rotation axis (5) and with rotation axis (5) fixed connection, coil (7) cover locate the periphery portion of second magnet (8), silicon steel sheet (6) cover locate the outside of coil (7).
2. A non-contact magnetic drive according to claim 1, characterized in that bearings (3) are provided at both ends of the rotating shaft (5), and the rotor (13) is connected to the housing (14) via the bearings (3).
3. The non-contact magnetic driver according to claim 2, wherein a first sleeve (10) is arranged between the first magnet (4) and the bearing (3), a first sleeve (10) is also arranged between the second magnet (8) and the bearing (3), and the first sleeve (10) is sleeved on the outer periphery of the rotating shaft (5) and fixedly connected with the rotating shaft (5).
4. The non-contact magnetic driver according to claim 1, wherein the housing (14) comprises a casing (2) and a first end cover (1) and a second end cover (9) respectively arranged at two ends of the casing (2), and the first end cover (1) and the second end cover (9) are provided with connecting grooves for clamping and fixing the bearing (3).
5. A non-contact magnetic drive as claimed in claim 4, wherein the housing (14) further comprises a third end cap (11), the third end cap (11) being located on a side of the first end cap (1) remote from the rotor (13), the first end cap (1) being snap-fit with the third end cap (11) and forming the chamber.
6. The non-contact magnetic driver according to claim 5, wherein the third end cap (11) is provided with a clamping ring (16), and the outer peripheral wall of the clamping ring (16) is abutted to the inner peripheral wall of the first end cap (1) so that the third end cap (11) is buckled with the first end cap (1).
7. The non-contact magnetic driver according to claim 4, wherein the first end cover (1) and the second end cover (9) are respectively provided with a connecting ring (15), and the outer peripheral wall of the connecting ring (15) is abutted with the inner peripheral wall of the housing (2) so that the first end cover (1) and the second end cover (9) are respectively fixedly connected with the housing (2).
8. A non-contact magnetic drive as claimed in claim 1, wherein the second magnet (8) is a ru-fe-b magnet; the rotating shaft (5) is a ceramic shaft; the coil (7) is a hollow cup coil (7); the shell (14) is made of a high-strength nonmetallic material, and the second sleeve (12) is made of a nonmetallic material.
9. A non-contact magnetic drive according to claim 2, characterized in that the bearing (3) is a ceramic ball bearing (3) or a ruby slide bearing (3).
10. A non-contact magnetic drive according to claim 3, characterized in that the first sleeve (10) is of a non-metallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322019868.3U CN220778839U (en) | 2023-07-28 | 2023-07-28 | Non-contact magnetic driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322019868.3U CN220778839U (en) | 2023-07-28 | 2023-07-28 | Non-contact magnetic driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220778839U true CN220778839U (en) | 2024-04-16 |
Family
ID=90661720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322019868.3U Active CN220778839U (en) | 2023-07-28 | 2023-07-28 | Non-contact magnetic driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220778839U (en) |
-
2023
- 2023-07-28 CN CN202322019868.3U patent/CN220778839U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |