CN212850147U

CN212850147U - Multi-pole internal connection type micro direct current motor

Info

Publication number: CN212850147U
Application number: CN202022049872.0U
Authority: CN
Inventors: 郭祥锋
Original assignee: Jiangxi Mabuqi Motor Technology Co ltd
Current assignee: Jiangxi Mabuqi Motor Technology Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-03-30
Anticipated expiration: 2030-09-18

Abstract

The utility model relates to the technical field of direct current motors, and discloses a multipolar internal connection type miniature direct current motor, which solves the problems of poor heat dissipation effect, inconvenient assembly and overhaul, disassembly and assembly of the prior miniature direct current motor, and comprises an inner shell, wherein the inner part of the inner shell is centrally connected with a rotating shaft, and one end of the rotating shaft is rotationally connected with the inner shell through a first bearing; through the screw connection mode between interior casing and the end cover to and the threaded connection mode between shell body and the interior casing, convenient and fast when making the device assemble, and dismouting maintenance is convenient.

Description

Multi-pole internal connection type micro direct current motor

Technical Field

The utility model belongs to the technical field of direct current motor, specifically be a miniature direct current motor of multipolar inscription formula.

Background

The micro dc motor is a rotating motor that outputs or inputs dc power, and is called a micro dc motor.

The miniature direct current motor of multipolar internal connection formula can produce a large amount of heats in the use, and the heat dissipation among the prior art utilizes device casing self heat conduction to dispel the heat outwards usually, and the radiating effect is relatively poor, easily influences miniature direct current motor's performance, and in addition, current miniature direct current motor is comparatively loaded down with trivial details when the assembly, overhauls the dismouting inconvenient during the trouble.

Disclosure of Invention

To the above situation, for overcoming prior art's defect, the utility model provides a miniature direct current motor of multipolar internal connection formula, it is poor effectual to have solved present miniature direct current motor radiating effect to and assemble inconvenient and overhaul the inconvenient problem of dismouting.

In order to achieve the above object, the utility model provides a following technical scheme: a multi-pole internal connection type micro direct current motor comprises an inner shell, wherein a rotating shaft is connected in the center of the inner shell, one end of the rotating shaft is rotatably connected with the inner shell through a first bearing, a rotor is connected to one side of the outer end of the rotating shaft, a magnet is connected to the outer side of the rotor relative to the inner wall of the inner shell, an end cover is sleeved on one end of the inner shell relative to the outer part of the rotating shaft, the end cover is connected with the inner shell through a screw, a second bearing is connected to the position of the rotating shaft, which penetrates through the end cover, a fan blade is connected to one side of the rotating shaft relative to the rotor, the outer part of the inner shell is connected with an outer shell in a threaded manner, a heat dissipation cavity is formed between the outer shell and the, the inner shell outer wall is close to end cover one side and has been seted up the ring channel, and first inlet port has been seted up to ring channel lower extreme circumference, and the ring channel outside corresponds outer shell outer wall circumference and has been seted up the second inlet port.

Preferably, the outer end of the end cover corresponding to the screw connection part is provided with a sinking groove for accommodating the head of the screw conveniently.

Preferably, all be the boss form in the middle part of interior casing and shell body one end, the interior casing other end is rolled over outwards and is formed with the clamping ring, and the external screw thread has been seted up to the boss outer wall on the interior casing, and the internal thread has been seted up to the boss inner wall on the shell body, and shell body one end is connected with O type circle with the clamping ring contact jaw.

Preferably, a connecting hole facilitating installation of the device is formed in the circumferential direction of one end of the connecting ring.

Preferably, the air outlet is arranged in an inclined angle with a low inner part and a high outer part.

Preferably, the annular groove is semicircular in cross section.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses, through the interior casing, the flabellum, the shell body, the heat dissipation chamber, annular heat conduction circle, the ring channel, set up on first inlet port and the second inlet port, the heat that produces in the device interior casing, blow to the venthole under the effect of flabellum, the interior negative pressure that forms of inner casing this moment, outside air gets into in the ring channel from the second inlet port, then get into the interior casing from the second inlet port, make the air current flow drive the heat and pass the venthole and get into in the heat dissipation chamber, the heat in the heat dissipation chamber is outwards discharged from the louvre on the shell body, and annular heat conduction circle outwards transmits inner wall heat of inner casing, thereby reach the heat dissipation purpose, the radiating effect is good, effectively avoid the device work heat to influence;

(2) the screw connection mode between the inner shell and the end cover and the threaded connection mode between the outer shell and the inner shell enable the device to be convenient and fast to assemble and convenient to disassemble, assemble and overhaul.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

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

fig. 2 is an enlarged schematic view of a in fig. 1 according to the present invention;

fig. 3 is an enlarged schematic view of B of fig. 1 according to the present invention;

in the figure: 1. an inner housing; 2. a rotating shaft; 3. a first bearing; 4. a rotor; 5. a magnet; 6. an end cap; 7. a screw; 8. a second bearing; 9. a fan blade; 10. an outer housing; 11. a heat dissipation cavity; 12. an annular heat conducting ring; 13. a through hole; 14. heat dissipation holes; 15. an air outlet; 16. an annular groove; 17. a first air intake hole; 18. a second air intake hole; 19. sinking a groove; 20. a boss; 21. a connecting ring; 22. and an O-shaped ring.

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 some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the first embodiment, as shown in fig. 1, fig. 2 and fig. 3, the utility model comprises an inner shell 1, a rotating shaft 2 is connected to the center inside the inner shell 1, one end of the rotating shaft 2 is rotatably connected to the inner shell 1 through a first bearing 3, one side of the outer end of the rotating shaft 2 is connected to a rotor 4, a magnet 5 is connected to the outer side of the rotor 4 relative to the inner wall of the inner shell 1, an end cap 6 is sleeved on one end of the inner shell 1 relative to the outer side of the rotating shaft 2, the end cap 6 is connected to the inner shell 1 through a screw 7, the end cap 6 is conveniently and quickly connected, a second bearing 8 is connected to the position where the rotating shaft 2 penetrates through the end cap 6, a fan blade 9 is connected to the outer end of the rotating shaft 2 relative to one side of the rotor 4, so as to bring out heat and, can play the supporting role to outer casing 10, through-hole 13 has been seted up to 12 one end circumference of annular heat conduction circle, make things convenient for the circulation of air in the heat dissipation chamber 11, shell body 10 outer wall has seted up louvre 14 for between two adjacent annular heat conduction circles 12, be convenient for discharge the heat, venthole 15 has been seted up for flabellum 9 one side to 1 one side of interior casing, shell body 1 outer wall is close to 6 one side of end cover and has seted up ring channel 16, first inlet port 17 has been seted up to 16 lower extreme circumference of ring channel, the second inlet port 18 has been seted up to the corresponding shell body 10 outer wall circumference in the ring channel 16 outside, it passes in second inlet port 18 gets into ring channel 16 to be convenient.

In the second embodiment, on the basis of the first embodiment, a sunk groove 19 for facilitating the head of the screw 7 to be accommodated is formed at the joint of the outer end of the end cover 6 corresponding to the screw 7.

Third embodiment, on the basis of first embodiment, all be boss 20 forms in the middle part of interior casing 1 and the 10 one end of shell body, the 1 other end of interior casing is outwards turned over and is formed with the clamping ring 21, the external screw thread has been seted up to the 20 outer walls of boss on the interior casing 1, the internal thread has been seted up to the 20 inner walls of boss on the shell body 10, shell body 10 one end is connected with O type circle 22 with the 21 contact jaw of clamping ring, install shell body 10 in 1 outside of interior casing fast under the cooperation of external screw thread and internal thread, O type circle 22 can make shell body 10 and the sealed of the.

In the fourth embodiment, on the basis of the first embodiment, a connection hole for facilitating installation of the device is circumferentially formed at one end of the connection ring 21.

In the fifth embodiment, on the basis of the first embodiment, the air outlet 15 is arranged in an inclined angle with a low inside and a high outside, so that the hot air is conveniently diffused into the heat dissipation cavity 11.

In the sixth embodiment, on the basis of the first embodiment, the section of the annular groove 16 is semicircular, so that the poor circulation of the outside air is avoided.

The working principle is as follows: when using, pivot 2 drives rotor 4 and rotates, simultaneously pivot 2 drives flabellum 9 rotatory, the inside heat that produces of interior casing 1, blow to venthole 15 under the effect of flabellum 9, the inside negative pressure that forms of interior casing 1, at this moment, outside air gets into in the ring channel 16 from second inlet port 18, then get into interior casing 1 inside from first inlet port 17, make the air current flow drive the heat and pass venthole 15 and get into in heat dissipation chamber 11, the heat in the heat dissipation chamber 11 outwards discharges from louvre 14 on the shell body 10, and annular heat conduction circle 12 is with the outside transmission of interior casing 1 inner wall heat, thereby reach the heat dissipation purpose, avoid device work heat to influence performance.

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.

Although embodiments of the present invention 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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A multipolar internal connection type micro direct current motor comprises an inner shell (1), and is characterized in that: the heat dissipation device is characterized in that a rotating shaft (2) is connected to the center inside the inner shell (1), one end of the rotating shaft (2) is rotatably connected with the inner shell (1) through a first bearing (3), one side of the outer end of the rotating shaft (2) is connected with a rotor (4), the outer side of the rotor (4) is connected with a magnet (5) relative to the inner wall of the inner shell (1), one end of the inner shell (1) is sleeved with an end cover (6) relative to the outer part of the rotating shaft (2), the end cover (6) is connected with the inner shell (1) through a screw (7), a second bearing (8) is connected to the position, penetrating through the end cover (6), of the rotating shaft (2), a fan blade (9) is connected to one side of the rotor (4) outside the outer shell (1), an outer thread of the inner shell (1) is connected with an outer shell (10), a, through-hole (13) have been seted up to annular heat conduction circle (12) one end circumference, louvre (14) have been seted up for between two adjacent annular heat conduction circles (12) to outer shell (10) outer wall, venthole (15) have been seted up for flabellum (9) one side in interior casing (1) one side, interior casing (1) outer wall is close to end cover (6) one side and has been seted up ring channel (16), first inlet port (17) have been seted up to ring channel (16) lower extreme circumference, second inlet port (18) have been seted up to the outer wall circumference of corresponding shell (10) in the ring channel (.

2. A multi-pole internal connection type micro dc motor according to claim 1, wherein: the outer end of the end cover (6) corresponding to the joint of the screw (7) is provided with a sinking groove (19) which is convenient for the head of the screw (7) to hold.

3. A multi-pole internal connection type micro dc motor according to claim 1, wherein: interior casing (1) and shell body (10) one end middle part all are boss (20) form, and interior casing (1) other end is outwards turned over and is formed with clamping ring (21), and boss (20) outer wall on interior casing (1) has seted up the external screw thread, and boss (20) inner wall on shell body (10) is seted up there is the internal thread, and shell body (10) one end is connected with O type circle (22) with clamping ring (21) contact jaw.

4. A multi-pole internal connection type micro dc motor according to claim 3, wherein: and one end of the connecting ring (21) is circumferentially provided with a connecting hole which is convenient for the installation of the device.

5. A multi-pole internal connection type micro dc motor according to claim 1, wherein: the air outlet holes (15) are arranged at an inclined angle with a low inside and a high outside.

6. A multi-pole internal connection type micro dc motor according to claim 1, wherein: the section of the annular groove (16) is semicircular.