CN209375318U - Brushless motor equipped with bearing assembly - Google Patents
Brushless motor equipped with bearing assembly Download PDFInfo
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- CN209375318U CN209375318U CN201920234053.8U CN201920234053U CN209375318U CN 209375318 U CN209375318 U CN 209375318U CN 201920234053 U CN201920234053 U CN 201920234053U CN 209375318 U CN209375318 U CN 209375318U
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- bearing assembly
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Abstract
The utility model relates to a kind of brushless motors equipped with bearing assembly, air duct shell, stator module, rotor assembly, bearing assembly, 3rd bearing and preceding coil holder including being equipped with bearing assembly fixed block；Bearing assembly includes the bearing sheath equipped with the second central through hole, and the first bearing and second bearing that are mounted in the second central through hole；3rd bearing installation is at the front in the 3rd bearing room of frame, stator module is fixed on the shell of air duct, front frame is arranged on the stator core of stator module, the rear end of the shaft of rotor assembly is inserted into from the inner hole of first bearing and the inner hole of second bearing respectively, the bearing sheath of bearing assembly is located in the first central through hole of bearing assembly fixed block, the front end of the shaft of rotor assembly is located in the inner hole of the 3rd bearing on preceding coil holder, and the permanent magnet element of rotor assembly is located at the interior intracavitary of the stator core of stator module.It is small that the utility model brushless motor has many advantages, such as that structurally reasonable, rotor assembly swings small and noise.
Description
[technical field]
The utility model relates to small-sized or micromotors, more particularly to the motor on hair dryer.
[background technique]
Small-sized or micromotor, such as a kind of high-speed permanent-magnet brushless motor is with power density is big, geometric dimension is small, dynamic
The series of advantages such as fast and operational efficiency height are responded, are had broad application prospects in high-speed cruising occasion, such as hair dryer
On just used a kind of high-speed permanent-magnet brushless motor.
The prior art only includes two bearings for the brushless motor on hair dryer, the brushless motor when starting,
Rotor assembly can be swung, and especially the brushless motor is used for hair dryer, and revolving speed is very high, and rotor assembly swings more strict
Evil, causes the permanent magnet on rotor assembly to scrape the stator core of stator module, can generate sharp noise, and be easily damaged
The stator core of permanent magnet and stator module on rotor assembly.
[utility model content]
A kind of dress is provided the technical problem to be solved by the present invention is to avoid above-mentioned the deficiencies in the prior art place
There is the brushless motor of bearing assembly, there is structurally reasonable, rotor assembly to swing, and small, noise is small, fixed, good heat dissipation, wind speed
High, the advantages that air quantity is big and the service life is long.
The utility model solve the technical problem the technical solution adopted is that:
A kind of brushless motor equipped with bearing assembly is provided, including the air duct shell of both ends open inner hollow, stator pack
Part, rotor assembly and fan blade；The stator module includes stator core and stator winding；The rotor assembly includes shaft and forever
Magnet assembly；The brushless motor further includes bearing assembly, using preceding coil holder and 3rd bearing made of engineering plastics, described
Bearing assembly includes bearing sheath, first bearing and the second bearing of cylinder type, and the bearing sheath is equipped with described for accommodating
Second central through hole of first bearing and second bearing, the first bearing and second bearing are mounted on the of the bearing sheath
In two central through holes;The front is provided with the 3rd bearing room for accommodating the 3rd bearing；It is set in the air duct shell
It is equipped with bearing assembly fixed block, which is fixed on the inner wall of the air duct shell by least two pieces of ribs
On, the air duct of air circulation is respectively formed between adjacent two ribs, the length of the bearing assembly fixed block is less than the air duct
The length of shell, the bearing assembly fixed block are equipped with the first central through hole that can accommodate the bearing assembly；The permanent magnet
Component is fixed on the front end of the shaft；The 3rd bearing is mounted in the 3rd bearing room of the preceding coil holder, the stator
Component is fixed on the air duct shell, some is located in the air duct shell stator module, another part
Stator module is located at except the air duct shell, and the stator module that the front frame is arranged in outside the air duct shell is determined
On sub- iron core, the rear end of the shaft of the rotor assembly is respectively from the inner hole and second bearing of the first bearing of the bearing assembly
Inner hole insertion, the bearing sheath of the bearing assembly be located at the bearing assembly fixed block of the air duct shell the first center lead to
In hole, the front end of the shaft of the rotor assembly is located in the inner hole of the 3rd bearing on the preceding coil holder, the rotor assembly
Permanent magnet element be located at the stator module stator core it is interior intracavitary, the fan blade is located in the air duct shell and solid
It is scheduled on the rear end of the shaft.
First central through hole of the bearing assembly fixed block and the air duct shell possess common central axis.
The brushless motor further includes using rear coil holder made of engineering plastics, and the rear coil holder is arranged in the wind
On the stator core of the intracorporal stator module of road shell.
The brushless motor further includes terminal plate, more pieces of contact pins and plug；More pieces of respective one end of contact pin respectively with it is described
The stator winding of stator module is electrically connected, and the respective other end is electrically connected with the terminal plate respectively and fixes the terminal plate；Institute
Plug electrical connection is stated to be fixed on the terminal plate.
The front end of the bearing assembly fixed block of the air duct shell is additionally provided with the front end of cylinder type, the front end
Equipped with the first cavity for being used to accommodate the stator module rear portion；The stator module rear portion is fixed on the axis of the air duct shell
In first cavity of the front end of bearing assembly fixed block.
The front end of the bearing assembly fixed block is equipped with notch at least one.
The bearing assembly further includes the elastic element being mounted between the first bearing and second bearing.
Compared with the existing technology compared with the beneficial effect of brushless motor of the utility model equipped with bearing assembly is:
One, installation is specially arranged there are two the bearing assembly of bearing in the utility model, keeps first bearing and second bearing straight
It connects in the bearing sheath for being mounted on bearing assembly, and bearing assembly is mounted on to the intracorporal bearing assembly fixed block of air duct shell again
It is interior, while in the 3rd bearing room that 3rd bearing installation is at the front frame, using three bearings, increase turning for rotor assembly
The fixed fulcrum of axis so that the utility model brushless motor when starting, alleviates the swing of rotor assembly, swing compared with
Small, the permanent magnet element for also avoiding rotor assembly scrapes the stator core of stator module, and noise is small；Using bearing assembly, make
It installs easier;
Two, the inner wall of air duct shell is fixed on by least two pieces of ribs positioned at the intracorporal bearing assembly fixed block of air duct shell
On, the air duct of air circulation is respectively formed between adjacent two ribs, and fan blade is located in the shell of air duct, in motor operation
When, fan blade will be arranged again in air inspiration to the rear end of air duct shell, then after being sent to the front end of air duct shell by each air duct
Out, in this way under the action of fan blade, air is arranged from the air duct shell other end again after entering through each air duct from air duct shell one end
Out, this frame mode is very reasonable, so that can give full play to fan blade after the utility model brushless motor is used on hair dryer
Effect, the wind speed of hair dryer can be made high, air quantity is big, and the service life also can accordingly extend；
Three, stator module is fixed in the front end of bearing assembly fixed block, fixed；And stator module has one
In in the shell of air duct, the stator module of another part is located at except the shell of air duct quartile, is convenient for the heat dissipation of stator module in this way,
So that the utility model brushless motor good heat dissipation, temperature rise is lower, lasts a long time；
Four, first bearing and second bearing can both carry out axial heat dissipation by the second central through hole of bearing sheath, also
It can be discharged after each rib rejects heat in each air duct again by bearing sheath and bearing assembly fixed block, moreover it is possible to be protected by bearing
Set and bearing assembly fixed block radiate to after on the shell of air duct discharge through each rib again again, and heat dissipation effect is very good;3rd bearing
It is arranged in the 3rd bearing room for the frame that is at the front, preceding coil holder is located at except the shell of air duct, among outside air, and front
The 3rd bearing room of frame is communicated towards outside with outside, therefore the heat dissipation effect of 3rd bearing is better;
Five, there is no electric motor end cap, directly stator module is fixed in the shell of air duct, so that structure is simple, heat dissipation
It is good；
Six, it is arranged between first bearing and second bearing and has elastic component so that first bearing and second bearing has one
Fixed precompression, thus eliminating the need the clearance of Bearing inner, are more advantageous to reduction noise.
In conclusion the brushless motor that the utility model is equipped with bearing assembly has, structurally reasonable, rotor assembly swing is small,
The advantages that noise is small, fixed, good heat dissipation, wind speed are high, air quantity is big and the service life is long.
[Detailed description of the invention]
Fig. 1 is the axonometric projection schematic diagram of brushless motor of the utility model equipped with bearing assembly；
Fig. 2 is the axonometric projection schematic diagram of the brushless motor other direction;
Fig. 3 is the axonometric projection schematic diagram after the brushless motor decomposes；
Fig. 4 is the orthographic projection main view schematic cross-sectional view of brushless motor shown in Fig. 3；
Fig. 5 is the axonometric projection schematic diagram of the air duct shell of the brushless motor；
Fig. 6 is the axonometric projection schematic diagram of the air duct shell other direction；
Fig. 7 is the orthographic projection main view schematic cross-sectional view of the air duct shell；
The axonometric projection schematic diagram of coil holder before Fig. 8 is the brushless motor；
Fig. 9 is the bearing assembly of the brushless motor and the axonometric projection schematic diagram that shaft is assembled together；
Figure 10 is the bearing assembly and the orthographic projection main view schematic cross-sectional view that shaft is assembled together.
[specific embodiment]
The utility model is described in further detail below with reference to each attached drawing.
Referring to Fig. 1 to Figure 10, a kind of brushless motor equipped with bearing assembly, the air duct shell including both ends open inner hollow
Body 10, stator module 20, rotor assembly 30 and fan blade 40；The stator module 20 include stator core 21 and stator winding (not
It draws)；The rotor assembly 30 includes shaft 31 and permanent magnet element 32；The brushless motor further includes bearing assembly 50, adopts
Preceding coil holder 60 and 3rd bearing 96 made of engineering plastics, the bearing sheath 58 of the bearing assembly 50 including cylinder type, the
One bearing 51 and second bearing 52, the bearing sheath 58, which is equipped with, is used to accommodate the of the first bearing 51 and second bearing 52
Two central through holes 588, the bearing sheath 58 can be made of metal material, such as the bearing sheath 58 is using stainless
Steel material is made, and the first bearing 51 and second bearing 52 are mounted in the second central through hole 588 of the bearing sheath 58;
The preceding coil holder 60 is equipped with the 3rd bearing room 61 for being used to accommodate the 3rd bearing 96；Axis is provided in the air duct shell 10
Bearing assembly fixed block 11, the bearing assembly fixed block 11 are fixed on the inner wall of the air duct shell 10 by least two pieces of ribs 12
On, the air duct 13 of air circulation is respectively formed between adjacent two ribs 12, the length of the bearing assembly fixed block 11 is less than institute
The length of air duct shell 10 is stated, the bearing assembly fixed block 11 is equipped with the first central through hole that can accommodate the bearing assembly 50
111；The permanent magnet element 32 is fixed on the front end of the shaft 31；The 3rd bearing 96 is mounted on the preceding coil holder 60
In 3rd bearing room 61, the stator module 20 is fixed on the air duct shell 10, described some position of stator module 20
In in the air duct shell 10, the stator module 20 of another part is located at except the air duct shell 10, the preceding coil holder 60
It is arranged on the stator core 21 of the stator module 20 outside the air duct shell 10, the shaft 31 of the rotor assembly 30
Rear end is inserted into from the inner hole of the first bearing 51 of the bearing assembly 50 and the inner hole of second bearing 52 respectively, the bearing assembly
50 bearing sheath 58 is located in the first central through hole 111 of the bearing assembly fixed block 11 of the air duct shell 10, and described turn
The front end of the shaft 31 of sub-component 30 is located in the inner hole of the 3rd bearing 96 on the preceding coil holder 60, the rotor assembly 30
Permanent magnet element 32 is located at the interior intracavitary of the stator core 21 of the stator module 20, and the fan blade 40 is located at the air duct shell
Body 10 is interior and is fixed on the rear end of the shaft 31.
Referring to fig. 4, Fig. 5 and Fig. 7, stator module 20 are fixed on the air duct shell 10, can be directly anchored to air duct
On the end face of the bearing assembly fixed block 11 of shell 10, bearing assembly fixed block 11 can also be re-extended out forward one and encompassed
The front end 119 of the cylinder type of 21 rear end of stator core of stator module 20, by 21 rear end of stator core of stator module 20
It is fixed in this front end 119, is described in detail below in conjunction with Fig. 5 and Fig. 7.
Referring to Fig. 3, Fig. 4 and Fig. 8, the setting of 3rd bearing 96 is at the front in the 3rd bearing room 61 of frame 60, preceding coil holder 60
Except air duct shell 10, among the outside air, and the 3rd bearing room 61 of preceding coil holder 60 is towards outside, with external phase
It is logical, therefore the heat dissipation effect of 3rd bearing 96 is better.
Referring to Fig. 5 to Fig. 7, in order to reinforce the intensity and fastness of bearing assembly fixed block 11, the quantity of rib 12 can be with
Design it is more, but also should not be too many, such as the quantity of rib 12 can be 5~10.
Referring to Fig. 5 to Fig. 7, practical upper air duct shell 10, bearing assembly fixed block 11 and rib 12 are the same parts, when
So they are also possible to different assembling parts and form.
Referring to Fig. 7, the first central through hole 111 of the bearing assembly fixed block 11 possesses jointly with the air duct shell 10
Central axis.
Referring to Fig. 3 and Fig. 4, the brushless motor further includes using rear coil holder 70 made of engineering plastics, the rear coil holder
70 are arranged on the stator core 21 of the stator module 20 in the air duct shell 10.Coil holder 70 and preceding coil holder 60 are all adopted afterwards
It is made of engineering plastics, additionally it is possible to the insulation between each stator slot and stator winding of the stator core 21 as stator module 20
With referring to fig. 4 and Fig. 8, being provided with and the stator slot equivalent amount of stator core 21 and the lordosis of specification on preceding coil holder 60
Slot 69 is also equipped on rear coil holder 70 and (does not mark with the rear tongue of the stator slot equivalent amount of stator core 21 and specification
Out), it is fixed tongue after each preceding tongue 69 and rear coil holder 70 of preceding coil holder 60 to be inserted into from the front and back ends of stator core 21 respectively
In each stator slot of sub- iron core 21, it is ensured that the insulation between stator core 21 and stator winding.
Referring to Fig. 1 to Fig. 4 and Fig. 8, for easy-to-connect and securely, the brushless motor further includes terminal plate 99, more pieces
Contact pin 98 and plug 97；More pieces of respective one end of contact pin 98 are electrically connected with the stator winding of the stator module 20 respectively, respectively
The other end be electrically connected respectively with the terminal plate 99 and fix the terminal plate 99；The electrical connection of plug 97 is fixed on described connect
On line plate 99.Referring to Fig. 1 and Fig. 8, before each contact pin 98 can be first separately fixed on each boss 68 of the front end face of coil holder 60, then
Stator winding and each contact pin 98 are electrically connected.
Referring to fig. 4 to Fig. 7, stator module 20 and keep stator module 20 fixed in order to facilitate the installation of, the air duct shell
The front end of the bearing assembly fixed block 11 of body 10 is additionally provided with the front end 119 of cylinder type, and the front end 119, which is equipped with, to be used to
Accommodate first cavity 1199 at 20 rear portion of stator module；20 rear portion of stator module be fixed on the air duct shell 10 it
In first cavity 1199 of the front end 119 of bearing assembly fixed block 11.It is additionally provided with the second cavity 1197 on front end 119, is
For the end of coil holder 70 after accommodating.
Referring to Fig. 5, in order to make stator module 20 radiate more preferably, the front end 119 of the bearing assembly fixed block 11 is equipped with
Notch 1198 at least one, front end 119 is uniformly provided with notch 1198 at three in figure.
Referring to fig. 4 and Figure 10, in order to eliminate the clearance inside first bearing 51 and second bearing 52, noise, institute are reduced
Stating bearing assembly 50 further includes the elastic element 59 being mounted between the first bearing 51 and second bearing 52；Elastic element 59
Both ends withstood between the outer ring of first bearing 51 and the outer ring of second bearing 52 respectively, give first bearing 51 and second bearing 52
Certain precompression is more advantageous to reduction noise to eliminate first bearing 51 and the respective internal clearance of second bearing 52, because
First bearing 51 and second bearing 52 are generally used ball bearing, and ball bearing include inner ring and outer ring and inner ring with
There are clearance in ball and retainer between outer ring, the inside of ball bearing, after the certain precompression of bearing, bearing outer ring
Ball can be squeezed, ball squeezes inner ring, and thus eliminating the need the clearance of Bearing inner.The elastic element 59 can be spring.
Preferred embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model;It should be appreciated that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model;Therefore, all equivalents and modification done with the utility model claims range,
It should belong to the covering scope of the utility model claims.
Claims (7)
1. a kind of brushless motor equipped with bearing assembly, air duct shell (10), stator module including both ends open inner hollow
(20), rotor assembly (30) and fan blade (40)；The stator module (20) includes stator core (21) and stator winding；Described turn
Sub-component (30) includes shaft (31) and permanent magnet element (32)；It is characterized by:
It further include bearing assembly (50), using preceding coil holder (60) made of engineering plastics and 3rd bearing (96), the bearing group
Part (50) includes bearing sheath (58), first bearing (51) and the second bearing (52) of cylinder type, and the bearing sheath (58) sets
There are the second central through hole (588) for accommodating the first bearing (51) and second bearing (52), the first bearing (51)
It is mounted on second bearing (52) in the second central through hole (588) of the bearing sheath (58);The preceding coil holder (60) is equipped with
For accommodating the 3rd bearing room (61) of the 3rd bearing (96)；Bearing assembly is provided in the air duct shell (10) to fix
Block (11), the bearing assembly fixed block (11) are fixed on the inner wall of the air duct shell (10) by least two pieces of ribs (12)
On, the air duct (13) of air circulation, the length of the bearing assembly fixed block (11) are respectively formed between adjacent two ribs (12)
Less than the length of the air duct shell (10), the bearing assembly fixed block (11), which is equipped with, can accommodate the bearing assembly (50)
First central through hole (111)；The permanent magnet element (32) is fixed on the front end of the shaft (31)；The 3rd bearing (96)
It is mounted in the 3rd bearing room (61) of the preceding coil holder (60), the stator module (20) is fixed on the air duct shell (10)
On, some is located in the air duct shell (10) stator module (20), stator module (20) position of another part
Except the air duct shell (10), the preceding coil holder (60) is arranged in the stator module of the air duct shell (10) outside
(20) on stator core (21), the rear end of the shaft (31) of the rotor assembly (30) is respectively from the bearing assembly (50)
The inner hole of first bearing (51) and the inner hole insertion of second bearing (52), the bearing sheath (58) of the bearing assembly (50) are located at
In the first central through hole (111) of the bearing assembly fixed block (11) of the air duct shell (10), the rotor assembly (30) it
The front end of shaft (31) is located in the inner hole of the 3rd bearing (96) on the preceding coil holder (60), and the rotor assembly (30) is forever
Magnet assembly (32) is located at the interior intracavitary of the stator core (21) of the stator module (20), and the fan blade (40) is located at described
Air duct shell (10) is interior and is fixed on the rear end of the shaft (31).
2. the brushless motor according to claim 1 equipped with bearing assembly, it is characterised in that:
The first central through hole (111) of the bearing assembly fixed block (11) and the air duct shell (10) possess common center
Axis.
3. the brushless motor according to claim 1 equipped with bearing assembly, it is characterised in that:
It further include using rear coil holder (70) made of engineering plastics, the rear coil holder (70) is arranged in the air duct shell
(10) on the stator core (21) of the stator module (20) in.
4. the brushless motor according to claim 1 equipped with bearing assembly, it is characterised in that:
It further include terminal plate (99), more pieces of contact pins (98) and plug (97)；More pieces of respective one end of contact pin (98) respectively with it is described
The stator winding of stator module (20) is electrically connected, and the respective other end is electrically connected with the terminal plate (99) respectively and fixes this and connects
Line plate (99)；Plug (97) electrical connection is fixed on the terminal plate (99).
5. the brushless motor according to claim 1 equipped with bearing assembly, it is characterised in that:
The front end of the bearing assembly fixed block (11) of the air duct shell (10) is additionally provided with the front end (119) of cylinder type, institute
It states front end (119) and is equipped with the first cavity (1199) for being used to accommodate the stator module (20) rear portion；The stator module
(20) rear portion is fixed on the first cavity of the front end (119) of the bearing assembly fixed block (11) of the air duct shell (10)
(1199) in.
6. the brushless motor according to claim 5 equipped with bearing assembly, it is characterised in that:
The front end (119) of the bearing assembly fixed block (11) is equipped with notch (1198) at least one.
7. according to claim 1 to 6 described in any item brushless motors equipped with bearing assembly, it is characterised in that:
The bearing assembly (50) further includes the elastic element being mounted between the first bearing (51) and second bearing (52)
(59)。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920234053.8U CN209375318U (en) | 2019-02-25 | 2019-02-25 | Brushless motor equipped with bearing assembly |
| PCT/CN2019/113165 WO2020173109A1 (en) | 2019-02-25 | 2019-10-25 | Brushless motor equipped with three bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920234053.8U CN209375318U (en) | 2019-02-25 | 2019-02-25 | Brushless motor equipped with bearing assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209375318U true CN209375318U (en) | 2019-09-10 |
Family
ID=67827233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920234053.8U Active CN209375318U (en) | 2019-02-25 | 2019-02-25 | Brushless motor equipped with bearing assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209375318U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020173109A1 (en) * | 2019-02-25 | 2020-09-03 | 曹天佑 | Brushless motor equipped with three bearings |
| CN112072854A (en) * | 2020-09-15 | 2020-12-11 | 东莞市徕芬电子科技有限公司 | Electric machine |
| WO2023207061A1 (en) * | 2022-04-25 | 2023-11-02 | 深圳盈特创智能科技有限公司 | Direct-current brushless electric motor and hair dryer using same |
| WO2023213005A1 (en) * | 2022-05-05 | 2023-11-09 | 广州市坤驰电机有限公司 | Brushless direct-current motor |
-
2019
- 2019-02-25 CN CN201920234053.8U patent/CN209375318U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020173109A1 (en) * | 2019-02-25 | 2020-09-03 | 曹天佑 | Brushless motor equipped with three bearings |
| CN112072854A (en) * | 2020-09-15 | 2020-12-11 | 东莞市徕芬电子科技有限公司 | Electric machine |
| WO2023207061A1 (en) * | 2022-04-25 | 2023-11-02 | 深圳盈特创智能科技有限公司 | Direct-current brushless electric motor and hair dryer using same |
| WO2023213005A1 (en) * | 2022-05-05 | 2023-11-09 | 广州市坤驰电机有限公司 | Brushless direct-current motor |
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