CN112994315A

CN112994315A - Medical high-precision brushless motor

Info

Publication number: CN112994315A
Application number: CN202110310496.2A
Authority: CN
Inventors: 邵钰珏; 李敏; 张国蓉; 周伟亮; 叶英
Original assignee: Wuxi Huayin Meihe Motor Co ltd
Current assignee: Wuxi Huayin Meihe Motor Co ltd
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-06-18

Abstract

The invention relates to the technical field of brushless motors and discloses a medical high-precision brushless motor which comprises a backing plate, wherein the top of the backing plate is fixedly connected with an insulating shell, the front end of the insulating shell is provided with a sealing cover, the front side of the sealing cover is provided with a ring groove, a limiting ring is arranged inside the ring groove, the front side of the ring groove is provided with a liquid storage cylinder, the rear side of the insulating shell is provided with a cooling fan, the top of the insulating shell is provided with a protection box, two ends of the cooling groove are fixedly connected with arc-shaped guide rails, the inner sides of the arc-shaped guide rails are provided with rolling shafts, two ends of the rolling shafts are provided with fixing nuts, and one side of each rolling shaft is fixedly; according to the invention, the rolling shaft can roll through the arc-shaped guide rail, so that the rolling of the metal wire mesh is controlled, the metal wire mesh is covered on the top of the protection box, the anti-collision protection effect can be achieved on the protection box by utilizing the toughness of the metal wire mesh, and the protection capability of the device is enhanced.

Description

Medical high-precision brushless motor

Technical Field

The invention relates to the technical field of brushless motors, in particular to a medical high-precision brushless motor.

Background

The brushless motor is composed of a motor main body and a driver, and is a typical electromechanical integration product. Because the brushless DC motor is operated in a self-control mode, a starting winding is not additionally arranged on a rotor like a synchronous motor which is started under the condition of heavy load under the condition of frequency conversion and speed regulation, and oscillation and step-out can not be generated when the load suddenly changes. The permanent magnet of the brushless DC motor with medium and small capacity is mostly made of rare earth neodymium iron boron material with high magnetic energy level. Therefore, the volume of the rare earth permanent magnet brushless motor is reduced by one machine base number compared with a three-phase asynchronous motor with the same capacity, and the brushless direct current motor adopts a semiconductor switching device to realize electronic commutation, namely the electronic switching device replaces a traditional contact commutator and an electric brush. The high-precision brushless motor has the advantages of high reliability, no reversing spark, low mechanical noise and the like, is widely applied to high-grade recording seats, video recorders, electronic instruments and automatic office equipment, is one of a plurality of brushless motors, and is often used for medical instruments.

The existing high-precision brushless motor is simple in structure and single in function, and cannot play a role in protecting a mainboard of a driver, so that the mainboard of the driver is easily damaged when the driver is used for a long time, the rotating stability of a rotating shaft cannot be guaranteed when the driver rotates, small deviation easily occurs when the driver rotates, and the practicability is poor.

SUMMARY OF THE PATENT FOR INVENTION

The invention aims to provide a medical high-precision brushless motor, which has a strong protection function, can provide protection for a mainboard of a driver, can ensure the stability of the motor during rotation, and prevents deviation during rotation.

In order to achieve the purpose, the invention provides the following technical scheme: a medical high-precision brushless motor comprises a base plate, wherein an insulating shell is fixedly connected to the top of the base plate, a sealing cover is arranged at the front end of the insulating shell and connected with the insulating shell through bolts, an output shaft is arranged in the middle of the sealing cover, an annular groove is formed in the front side of the sealing cover, the annular groove is fixedly connected with the sealing cover, a limiting ring is arranged inside the annular groove, a liquid storage cylinder is arranged on the front side of the annular groove, the liquid storage cylinder is bonded with the annular groove, a sponge ring is arranged inside the liquid storage cylinder, a cylinder cover is arranged on the front side of the liquid storage cylinder and connected with the liquid storage cylinder through bolts, a cooling fan is arranged on the rear side of the insulating shell, cooling grooves are formed in the two sides of the insulating shell, a piston is arranged on the outer side of the cooling grooves, the piston is in threaded connection with the cooling grooves, and a protective box is arranged at the, and be fixed connection between protection box and the insulating casing, the equal fixedly connected with arc guide rail in both ends of cooling bath, the inboard of arc guide rail is equipped with the roller bearing, the both ends of roller bearing are equipped with fixing nut, and be threaded connection between fixing nut and the roller bearing, one side fixedly connected with woven wire of roller bearing.

Preferably, the equal fixedly connected with mounting panel in both sides of backing plate, the both ends of mounting panel all are equipped with the locating hole, the bottom of backing plate is equipped with the silica gel pad, and is the bonding between silica gel pad and the backing plate.

Preferably, the limiting ring is connected with the annular groove through a sliding block, the inner side size of the limiting ring is matched with the outer side size of the output shaft, and the limiting ring forms a sliding structure with the annular groove through the sliding block.

Preferably, the inner side of the liquid storage cylinder is provided with a notch, the inner side size of the liquid storage cylinder is matched with the outer side size of the output shaft, and the front side of the liquid storage cylinder is attached to the rear side of the cylinder cover.

Preferably, one side of the cooling fan is provided with a circular screen plate, and a connecting shaft is arranged between the circular screen plate and the cooling fan.

Preferably, the circular screen plate and the heat dissipation fan form a rotating structure through a connecting shaft, and one side of the heat dissipation fan is attached to one side of the circular screen plate.

Preferably, one side of the cooling tank is attached to one side of the insulating shell, the cooling tank is symmetrical about the vertical center line of the insulating shell, and the cooling tank is fixedly connected with the insulating shell.

Preferably, the top of protection box is equipped with the lid, the inside both sides of protection box all are equipped with the cardboard, and be fixed connection between cardboard and the protection box, one side of cardboard is equipped with the plastic pad, the inner wall of protection box bonds and has the shield cover.

Preferably, the box cover and the protection box are movably clamped. The both ends of cardboard all are equipped with the screw hole, the cardboard is symmetrical about the vertical central line of protection box, for bonding between plastic pad and the cardboard.

Preferably, the outer side size of the roller is matched with the inner side size of the arc-shaped guide rail, one end of the metal wire mesh is fixedly connected with the arc-shaped guide rail, and one side of the fixing nut is attached to one side of the arc-shaped guide rail.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the device can be fixed with an external plane by matching the use of an external bolt through the positioning hole on the mounting plate, the mounting of the device is completed, the silica gel pad is soft in texture and can play a role in shock absorption when the device is used, the insulating shell can play an insulating protection role for internal devices of the device, the sealing cover is opened by loosening the bolt, the internal devices of the device can be conveniently checked and maintained, and the limiting ring is matched with the use of the sliding block and the annular groove to play a limiting role when the output shaft rotates, so that the stability of the rotation of the output shaft is ensured, the deviation in the rotation is prevented, and the purpose of high precision is realized.

2. According to the invention, the mainboard of the driver can be conveniently installed and fixed through the clamping plate, the plastic pad can prevent abrasion between the mainboard and the clamping plate, the mainboard can be protected by using the protection box and the box cover in a matched manner, the shielding cover can ensure the stability of the connection of the driver and prevent the driver from being interfered by external signals, the rolling shaft can roll through the arc-shaped guide rail, so that the rolling of the metal wire mesh is controlled, the metal wire mesh is covered on the top of the protection box, the protection box can be protected against collision by using the toughness of the metal wire mesh, the protection capability of the device is enhanced, and the fixing nut is convenient for fixing the rolling shaft.

Drawings

FIG. 1 is a schematic overall perspective view of the present invention;

FIG. 2 is a schematic rear perspective view of the present invention;

FIG. 3 is a schematic bottom perspective view of the present invention;

FIG. 4 is a perspective view of a protective case according to the present invention;

FIG. 5 is a schematic perspective view of an insulating housing according to the present invention;

fig. 6 is a schematic perspective view of a liquid storage barrel according to the present invention.

In the figure: 1. a base plate; 101. mounting a plate; 102. positioning holes; 103. a silica gel pad; 2. an insulating case; 3. a sealing cover; 4. an output shaft; 5. a ring groove; 6. a limiting ring; 7. a liquid storage cylinder; 8. a sponge ring; 9. a cylinder cover; 10. a heat radiation fan; 1001. a circular mesh plate; 1002. a connecting shaft; 11. a cooling tank; 12. a piston; 13. a protective case; 1301. a box cover; 1302. clamping a plate; 1303. a plastic pad; 1304. a shield case; 14. an arc-shaped guide rail; 15. a roller; 16. fixing a nut; 17. a wire mesh.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the patent of the invention without any inventive work belong to the protection scope of the patent of the invention.

Referring to fig. 1-6, a medical high-precision brushless motor comprises a backing plate 1, an insulating casing 2 is fixedly connected to the top of the backing plate 1, a sealing cover 3 is disposed at the front end of the insulating casing 2, the sealing cover 3 is connected with the insulating casing 2 through a bolt, an output shaft 4 is disposed in the middle of the sealing cover 3, an annular groove 5 is disposed at the front side of the sealing cover 3, the annular groove 5 is fixedly connected with the sealing cover 3, a limit ring 6 is disposed inside the annular groove 5, a liquid storage cylinder 7 is disposed at the front side of the annular groove 5, the liquid storage cylinder 7 is bonded with the annular groove 5, a sponge ring 8 is disposed inside the liquid storage cylinder 7, a cylinder cover 9 is disposed at the front side of the liquid storage cylinder 7, the cylinder cover 9 is connected with the liquid storage cylinder 7 through a bolt, a heat dissipation fan 10 is disposed at the rear side of the insulating casing 2, cooling grooves 11 are disposed at both sides of the insulating casing 2, a piston 12 is disposed at the, the top of insulating casing 2 is equipped with protection box 13, and is fixed connection between protection box 13 and insulating casing 2, the equal fixedly connected with arc guide rail 14 in both ends of cooling bath 11, and the inboard of arc guide rail 14 is equipped with roller bearing 15, and the both ends of roller bearing 15 are equipped with fixation nut 16, and be threaded connection between fixation nut 16 and the roller bearing 15, one side fixedly connected with wire mesh 17 of roller bearing 15.

Referring to fig. 1-4, both sides of the backing plate 1 are fixedly connected with mounting plates 101, both ends of the mounting plates 101 are provided with positioning holes 102, the bottom of the backing plate 1 is provided with a silica gel pad 103, the silica gel pad 103 and the backing plate 1 are bonded, the device is placed on an external horizontal plane through the backing plate 1, the positioning holes 102 on the mounting plates 101 are utilized to match with external bolts, the device can be fixed with the external plane, the mounting of the device is completed, and the silica gel pad 103 is soft in texture and can play a role in shock absorption when the device is used.

Referring to fig. 1 and 3-5, the limit ring 6 is connected with the ring groove 5 through a sliding block, the inner side of the limit ring 6 is matched with the outer side of the output shaft 4, the limit ring 6 forms a sliding structure with the ring groove 5 through the sliding block, and the limit ring 6 can play a role in limiting when the output shaft 4 rotates by matching with the sliding block and the ring groove 5, so that the stability of the rotation of the output shaft 4 is ensured, the deviation is prevented when the output shaft rotates, and the purpose of high precision is achieved.

Referring to fig. 1 and 3-6, a notch is formed in the inner side of the liquid storage cylinder 7, the size of the inner side of the liquid storage cylinder 7 is matched with the size of the outer side of the output shaft 4, the front side of the liquid storage cylinder 7 is attached to the rear side of the cylinder cover 9, the cylinder cover 9 can be detached to open the liquid storage cylinder 7 by loosening a bolt, lubricant can be filled into the liquid storage cylinder 7, the lubricant can be uniformly smeared on the output shaft 4 by matching with the use of the sponge ring 8, and the phenomenon of shaft burning of the device in use is prevented.

Referring to fig. 2, a circular screen 1001 is disposed on one side of the heat dissipation fan 10, and a connecting shaft 1002 is disposed between the circular screen 1001 and the heat dissipation fan 10, so that the heat dissipation performance of the device can be enhanced by using the heat dissipation fan 10.

Referring to fig. 2, a rotating structure is formed between the circular screen plate 1001 and the heat dissipation fan 10 through the connecting shaft 1002, one side of the heat dissipation fan 10 is attached to one side of the circular screen plate 1001, the circular screen plate 1001 can filter and protect the heat dissipation fan 10, and prevent larger dust particles from entering the device, and the connecting shaft 1002 can rotate the circular screen plate 1001 to rotate the circular screen plate 1001, so that the heat dissipation fan 10 can be cleaned conveniently.

Referring to fig. 1-5, one side of the cooling tank 11 is attached to one side of the insulating housing 2, the cooling tank 11 is symmetrical about the vertical center line of the insulating housing 2, the cooling tank 11 is fixedly connected to the insulating housing 2, and the piston 12 is rotated to pour cooling liquid into the cooling tank 11 for water-cooling heat dissipation of the device.

Referring to fig. 1, 4 and 5, a box cover 1301 is disposed on the top of the protection box 13, two sides of the inside of the protection box 13 are provided with a clamping plate 1302, the clamping plate 1302 is fixedly connected with the protection box 13, one side of the clamping plate 1302 is provided with a plastic pad 1303, a shielding cover 1304 is adhered to the inner wall of the protection box 13, the main board of the drive is conveniently mounted and fixed through the clamping plate 1302, and the plastic pad 1303 can prevent the main board and the clamping plate 1302 from being worn.

Referring to fig. 1, 4 and 5, the box cover 1301 and the protection box 13 are movably clamped. Both ends of cardboard 1302 all are equipped with the screw hole, and cardboard 1302 is symmetrical about the vertical central line of protective box 13, for bonding between plastic pad 1303 and the cardboard 1302, utilizes the cooperation of protective box 13 and lid 1301 to use, can play the guard action to the mainboard, and the stability that the driver is connected can be guaranteed to shield cover 1304, prevents to receive external signal's interference.

Referring to fig. 1 and 2, the outer dimension of the roller 15 is matched with the inner dimension of the arc-shaped guide rail 14, one end of the wire mesh 17 is fixedly connected with the arc-shaped guide rail 14, one side of the fixing nut 16 is attached to one side of the arc-shaped guide rail 14, the roller 15 can roll through the arc-shaped guide rail 14, so that the wire mesh 17 is controlled to be rolled, the wire mesh 17 is covered on the top of the protective box 13, and the protective box 13 can be protected from collision by using the toughness of the wire mesh 17.

The working principle is as follows: the user places the device on an external horizontal plane through the backing plate 1, the device can be fixed between the device and the external plane by utilizing the positioning holes 102 on the mounting plate 101 in cooperation with the use of external bolts, the installation of the device is completed, the silica gel pad 103 is soft in texture and can play a role in shock absorption when the device is used, the insulating shell 2 can play an insulating protection role in the internal devices of the device, the sealing cover 3 is opened by loosening bolts so as to be convenient for checking and maintaining the internal devices of the device, the limiting ring 6 is matched with the slide block and the annular groove 5 to play a limiting role when the output shaft 4 rotates, so that the rotating stability of the output shaft 4 is ensured, the liquid storage cylinder 7 is prevented from being deviated when rotating, the high-precision purpose is realized, the cylinder 7 can be opened by detaching the cylinder cover 9 through loosening the bolts, the lubricant can be filled in the liquid storage cylinder 7 and is matched with the use of, the lubricant can be uniformly smeared on the output shaft 4 to prevent the device from being burnt when in use, the piston 12 can be rotated to pour cooling liquid into the cooling tank 11 to carry out water-cooled heat dissipation on the device, the heat dissipation performance of the device can be enhanced by matching with the use of the heat dissipation fan 10, the circular screen plate 1001 can play a role of filtering and protecting the heat dissipation fan 10 to prevent larger dust particles from entering the device, the circular screen plate 1001 can be rotated by utilizing the connecting shaft 1002 to rotate the circular screen plate 1001 to be convenient for cleaning the heat dissipation fan 10, the main board of the driver can be conveniently installed and fixed by the clamping board 1302, the plastic pad 1303 can prevent the main board 1302 from being worn, the main board can be protected by matching the protective box 13 and the box cover 1301, the shield 1304 can ensure the stability of the connection of the driver and prevent the interference of external signals, through arc guide rail 14, can make roller 15 roll to control wire 17's rolling, cover wire 17 at the top of protecting box 13, utilize wire 17's toughness can play the crashproof guard action to protecting box 13, strengthen this device's protective capacities, fixation nut 16 is convenient for fix roller 15.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present patent have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the present patent, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a medical high accuracy brushless motor, includes backing plate (1), its characterized in that: the top fixedly connected with insulating casing (2) of backing plate (1), the front end of insulating casing (2) is equipped with sealed lid (3), and passes through bolted connection between sealed lid (3) and insulating casing (2), the centre of sealed lid (3) is equipped with output shaft (4), the front side of sealed lid (3) is equipped with annular (5), and be fixed connection between annular (5) and sealed lid (3), the inside of annular (5) is equipped with spacing ring (6), the front side of annular (5) is equipped with liquid storage cylinder (7), and for bonding between liquid storage cylinder (7) and annular (5), the inside of liquid storage cylinder (7) is equipped with sponge circle (8), the front side of liquid storage cylinder (7) is equipped with cover (9), and passes through bolted connection between cover (9) and liquid storage cylinder (7), the rear side of insulating casing (2) is equipped with radiator fan (10), the both sides of insulating casing (2) all are equipped with cooling bath (11), the outside of cooling bath (11) is equipped with piston (12), and is threaded connection between piston (12) and cooling bath (11), the top of insulating casing (2) is equipped with protecting box (13), and is fixed connection between protecting box (13) and insulating casing (2), the equal fixedly connected with arc guide rail (14) in both ends of cooling bath (11), the inboard of arc guide rail (14) is equipped with roller bearing (15), the both ends of roller bearing (15) are equipped with fixation nut (16), and are threaded connection between fixation nut (16) and roller bearing (15), one side fixedly connected with wire mesh (17) of roller bearing (15).

2. The medical high-precision brushless motor as claimed in claim 1, wherein: the equal fixedly connected with mounting panel (101) in both sides of backing plate (1), the both ends of mounting panel (101) all are equipped with locating hole (102), the bottom of backing plate (1) is equipped with silica gel pad (103), and is the bonding between silica gel pad (103) and backing plate (1).

3. The medical high-precision brushless motor as claimed in claim 1, wherein: the limiting ring is characterized in that the limiting ring (6) is connected with the annular groove (5) through a sliding block, the inner side size of the limiting ring (6) is matched with the outer side size of the output shaft (4), and the limiting ring (6) forms a sliding structure with the annular groove (5) through the sliding block.

4. The medical high-precision brushless motor as claimed in claim 1, wherein: the inner side of the liquid storage cylinder (7) is provided with a notch, the inner side size of the liquid storage cylinder (7) is matched with the outer side size of the output shaft (4), and the front side of the liquid storage cylinder (7) is attached to the rear side of the cylinder cover (9).

5. The medical high-precision brushless motor as claimed in claim 1, wherein: a circular screen plate (1001) is arranged on one side of the heat dissipation fan (10), and a connecting shaft (1002) is arranged between the circular screen plate (1001) and the heat dissipation fan (10).

6. The medical high-precision brushless motor according to claim 5, wherein: the circular screen plate (1001) and the heat dissipation fan (10) form a rotating structure through the connecting shaft (1002), and one side of the heat dissipation fan (10) is attached to one side of the circular screen plate (1001).

7. The medical high-precision brushless motor as claimed in claim 1, wherein: one side of the cooling groove (11) is attached to one side of the insulating shell (2), the cooling groove (11) is symmetrical about the vertical center line of the insulating shell (2), and the cooling groove (11) is fixedly connected with the insulating shell (2).

8. The medical high-precision brushless motor as claimed in claim 1, wherein: the top of protection box (13) is equipped with lid (1301), the inside both sides of protection box (13) all are equipped with cardboard (1302), and be fixed connection between cardboard (1302) and protection box (13), one side of cardboard (1302) is equipped with plastic pad (1303), the inner wall bonding of protection box (13) has shield cover (1304).

9. The medical high-precision brushless motor according to claim 8, wherein: the box cover (1301) is movably clamped with the protection box (13). Both ends of the clamping plate (1302) are provided with threaded holes, the clamping plate (1302) is symmetrical about the vertical central line of the protective box (13), and the plastic pad (1303) is bonded with the clamping plate (1302).

10. The medical high-precision brushless motor as claimed in claim 1, wherein: the outer side size of the roller (15) is matched with the inner side size of the arc-shaped guide rail (14), one end of the metal wire mesh (17) is fixedly connected with the arc-shaped guide rail (14), and one side of the fixing nut (16) is attached to one side of the arc-shaped guide rail (14).