CN208522581U

CN208522581U - Brushless motor and air duct shell on hair dryer

Info

Publication number: CN208522581U
Application number: CN201821372066.3U
Authority: CN
Inventors: 曹天佑; 池金生
Original assignee: Shenzhen New Thinking Control Technology Co Ltd
Current assignee: Shenzhen New Thinking Control Technology Co Ltd
Priority date: 2018-08-24
Filing date: 2018-08-24
Publication date: 2019-02-19
Anticipated expiration: 2028-08-24
Also published as: KR20200023166A; KR102118286B1

Abstract

The brushless motor and air duct shell that the utility model relates to a kind of on hair dryer, the brushless motor include stator module, rotor assembly, fan blade, fore bearing, rear bearing, air duct shell and stator support；Air duct inner walls are fixed with bearing fixed block by least two pieces of ribs, and bearing fixed block is equipped with fore bearing room and rear bearing room；Fore bearing and rear bearing are separately mounted in the fore bearing room and rear bearing room of bearing fixed block, stator support is fixed on the front end face of bearing fixed block, stator module is fixed on stator support, stator module some be located in the shell of air duct, the stator module of another part is located at except the shell of air duct, the rear end of the shaft of rotor assembly is inserted into from the inner hole of fore bearing and the inner hole of rear bearing respectively, and fan blade is fixed on the rear end of shaft.The utility model brushless motor has many advantages, such as that structurally reasonable, simple process, good heat dissipation, at low cost, wind speed is high, air quantity is big and the service life is long.

Description

Brushless motor and air duct shell on hair dryer

[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.

After the prior art includes electric machine casing, stator module, rotor assembly, motor for the brushless motor on hair dryer Lid, fore bearing and rear bearing, fore bearing are mounted in the bearing chamber of electric machine casing, and rear bearing is mounted on the bearing chamber of motor rear cover Interior, stator module is fixed on the inner wall of electric machine casing, and the both ends of the shaft of rotor assembly are respectively from the inner hole of fore bearing with after The inner hole of bearing is inserted into, and motor rear cover is fixed on the open end of electric machine casing, and the permanent magnet element on rotor assembly is located at front axle It holds between rear bearing, and is matched with stator module；The brushless motor of this structure is wrapped in motor due to stator module In shell, heat dissipation effect is bad, and temperature rise is higher, and the service life is lower, and fore bearing and rear bearing are located on two components, front axle The concentricity of the central axis of the central axis and rear bearing that hold it is difficult to ensure that；And the brushless motor is generally directly installed on electricity The dead astern of the air outlet of blowing, fan blade can be visible, and safety is lower, due to the air draft directly in hair dryer, so that wind Speed is low, and air quantity is small, and noise is also bigger.

[utility model content]

A kind of use is provided the technical problem to be solved by the present invention is to avoid above-mentioned the deficiencies in the prior art place In brushless motor and air duct shell on hair dryer, with structurally reasonable, simple process, good heat dissipation, at low cost, wind speed is high, wind The advantages that amount 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 on hair dryer is provided, including stator module, rotor assembly, fan blade, fore bearing and after Bearing；The rotor assembly includes shaft and permanent magnet element；The brushless motor on hair dryer further includes that both ends are opened The air duct shell of mouthful inner hollow and stator support equipped with the second central through hole；Institute can be accommodated by being provided in the air duct shell The bearing fixed block of fore bearing and rear bearing is stated, which is fixed on the air duct shell by least two pieces of ribs On inner wall, the air duct of air circulation is respectively formed between adjacent two ribs, the length of the bearing fixed block is less than the air duct The length of shell, the bearing fixed block are equipped with the first central through hole, and the front and rear of the bearing fixed block is respectively equipped with The fore bearing room and rear bearing room being connected with the first central through hole, first central through hole, fore bearing room and rear bearing room Possess common central axis；The permanent magnet element is fixed on the front end of the shaft；The fore bearing is mounted on the axis It holds in the fore bearing room of fixed block, the rear bearing is mounted in the rear bearing room of the bearing fixed block, the stator support It in the air duct shell and is fixed on the front end face of the bearing fixed block, the stator module is fixed on the stator On bracket, some is located in the air duct shell stator module, and the stator module of another part is located at the wind Except road shell, the rear end of the shaft of the rotor assembly is inserted into from the inner hole of fore bearing and the inner hole of rear bearing respectively, described The permanent magnet element of rotor assembly is located at the interior intracavitary of the stator core of the stator module, and the fan blade is located at the air duct shell Rear end that is internal and being fixed on the shaft.

The fore bearing room and rear bearing room of the bearing fixed block and the air duct shell possess common central axis.

The stator support includes cylindrical bottom plate, and convex positioned at three of the bottom edge towards the same direction Column；Second central through hole is arranged on the bottom plate, also sets up that there are three countersunk head through-holes on the bottom plate；On each pillar It is designed with threaded hole.

The length of stator module outside the air duct shell be greater than be located at the intracorporal stator module of air duct shell it Length.

The stator module includes terminal plate, more pieces of contact pins and plug；More pieces of respective one end of contact pin respectively with stator pack The stator coil of part is electrically connected, and the respective other end is electrically connected with the terminal plate respectively and fixes the terminal plate；The plug Electrical connection is fixed on the terminal plate.

A kind of air duct shell is additionally provided, motor is used for, which is the annular of both ends open and inner hollow Shell, the bearing fixed block of the fore bearing and rear bearing that can accommodate motor is provided in the air duct shell, and the bearing fixed block is logical It crosses at least two pieces of ribs to be fixed on the inner wall of the air duct shell, the wind of air circulation is respectively formed between adjacent two ribs Road, the length of the bearing fixed block are less than the length of the air duct shell, and the bearing fixed block is equipped with the first central through hole, The front and rear of the bearing fixed block is respectively equipped with the fore bearing room and rear bearing room being connected with the first central through hole, institute It states the first central through hole, fore bearing room and rear bearing room and possesses common central axis.

Compared with the existing technology compared with beneficial effect of the utility model for brushless motor and air duct shell on hair dryer It is:

One, the utility model is specially provided with the bearing fixed block that can accommodate fore bearing and rear bearing in the shell of air duct, The front and rear of bearing fixed block is respectively equipped with fore bearing room and rear bearing room, and fore bearing room and rear bearing room possess common Central axis；Using this structure, fore bearing room and rear bearing room are arranged on the same part, handling ease and technique letter Single, the concentricity of fore bearing room and rear bearing room is high, and when so that motor operating, noise is smaller；

Two, fore bearing and rear bearing are located at the same side of the permanent magnet element of rotor assembly, simplify technique；

Three, it is fixed on the inner wall of air duct shell positioned at the intracorporal bearing fixed block of air duct shell by least two pieces of ribs, 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, Fan blade will be then exhausted from 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, this Under the action of fan blade, air is discharged from the air duct shell other end sample again after entering through each air duct from air duct shell one end, this Kind frame mode is very reasonable, can give full play to the effect of fan blade, the wind speed of hair dryer can be made high, air quantity is big, Er Qieshou Life also can accordingly extend；

Four, there is no electric motor end cap, stator module is fixed in the shell of air duct only with stator support, so that structure is simple It is single；

Five, stator module is fixed on stator support, some is located in the shell of air duct stator module, another part Even most stator module be located at except the shell of air duct, in this way convenient for stator module heat dissipation so that the utility model without Brush motor good heat dissipation, temperature rise is lower, lasts a long time；

Six, fore bearing and rear bearing can both carry out axial heat dissipation by the first central through hole, can also be solid by bearing Determine block to be discharged after each rib rejects heat in each air duct, moreover it is possible to dissipate to after on the shell of air duct again by bearing fixed block through each rib Heat discharge, heat dissipation effect are very good.

In conclusion brushless motor and air duct shell that the utility model is used on hair dryer have structurally reasonable, technique Simply, good heat dissipation, the advantages that at low cost, wind speed is high, air quantity is big and the service life is long.

[Detailed description of the invention]

Fig. 1 is orthographic projection right side view of the utility model for the brushless motor on hair dryer；

Fig. 2 is the schematic cross-sectional view of A-A shown in Fig. 1；

Fig. 3 is the axonometric projection schematic diagram after the brushless motor decomposes；

Fig. 4 is the axonometric projection schematic diagram of the stator support of the brushless motor；

Fig. 5 is the axonometric projection schematic diagram in another direction of the stator support of the brushless motor；

Fig. 6 is the axonometric projection schematic diagram of the stator module of the brushless motor；

Fig. 7 is the axonometric projection schematic diagram of the air duct shell of the brushless motor；

Fig. 8 is the axonometric projection schematic diagram in air duct another direction of shell of the brushless motor.

[specific embodiment]

The utility model is described in further detail below with reference to each attached drawing.

Referring to Fig. 1 to Fig. 8, a kind of brushless motor on hair dryer, including stator module 20, rotor assembly 30, wind Leaf 40, fore bearing 50 and rear bearing 60；The rotor assembly 30 includes shaft 31 and permanent magnet element 32；It is described to be used for hair dryer On brushless motor further include the air duct shell 10 of both ends open inner hollow and the stator support equipped with the second central through hole 71 70；The bearing fixed block 11 that can accommodate the fore bearing 50 and rear bearing 60 is provided in the air duct shell 10, the bearing is solid Determine block 11 to be fixed on the inner wall of the air duct shell 10 by least two pieces of ribs 12, be respectively formed between adjacent two ribs 12 The air duct 13 of air circulation, the length of the bearing fixed block 11 are less than the length of the air duct shell 10, and the bearing is fixed Block 11 is equipped with the first central through hole 111, and the front and rear of the bearing fixed block 11 is respectively equipped with and the first central through hole 111 The fore bearing room 112 and rear bearing room 113 being connected, first central through hole 111, fore bearing room 112 and rear bearing room 113 Possess common central axis；The permanent magnet element 32 is fixed on the front end of the shaft 31；The fore bearing 50 is mounted on In the fore bearing room 112 of the bearing fixed block 11, the rear bearing 60 is mounted on the rear bearing room of the bearing fixed block 11 In 113, the stator support 70 is located in the air duct shell 10 and is fixed on the front end face of the bearing fixed block 11, institute Stator module 20 is stated to be fixed on the stator support 70, the stator module 20 some be located at the air duct shell 10 Interior, the stator module 20 of another part is located at except the air duct shell 10, the rear end of the shaft 31 of the rotor assembly 30 It is inserted into respectively from the inner hole of fore bearing 50 and the inner hole of rear bearing 60, the permanent magnet element 32 of the rotor assembly 30 is located at described The stator core 21 of stator module 20 it is interior intracavitary, the fan blade 40 is located in the air duct shell 10 and is fixed on described turn The rear end of axis 31.

Referring to Fig. 1, Fig. 7 and Fig. 8, in order to reinforce the intensity and fastness of bearing 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. 1, Fig. 2, Fig. 7 and Fig. 8, practical upper air duct shell 10, bearing fixed block 11 and rib 12 are same zero Part, they are also possible to different assembling parts and form certainly.

Referring to fig. 2, the fore bearing room 112 and rear bearing room 113 of the bearing fixed block 11 are gathered around with the air duct shell 10 There is common central axis.

Referring to fig. 2 to Fig. 5, the stator support 70 includes cylindrical bottom plate 72, and is located at the 72 edge court of bottom plate To three pillars 73 in the same direction；Second central through hole 71 is arranged on the bottom plate 72, on the bottom plate 72 also There are three countersunk head through-holes 74 for setting；Threaded hole 739 is designed on each pillar 73.Referring to Fig. 8, the front end of the bearing fixed block 11 Threaded hole 119 there are three setting on face passes through three countersunk heads of the bottom plate 72 of the stator support 70 by three screws 98 in this way Through-hole 74 is screwed into three threaded holes 119 of the front end face of the bearing fixed block 11, so that it may consolidate the stator support 70 It is scheduled on the front end face of the bearing fixed block 11.Similarly, the stator iron of the stator module 20 is passed through by three screws 99 Three through-hole (not shown)s of core 21 are screwed into the threaded hole 739 of three pillars 73 of the stator support 70, so that it may by institute Stator module 20 is stated to be fixed on the stator support 70.The height of three pillars 73 of the stator support 70 only needs to meet Avoid the rear end of the stator module 20.

The length of stator module 20 outside the air duct shell 10 is greater than the stator being located in the air duct shell 10 The length of component 20；That is, the stator module 20 only has small part to be located in the air duct shell 10, it is most fixed Sub-component 20 is except the air duct shell 10.

Referring to fig. 2, Fig. 3 and Fig. 6, what it is marked as 22 is coil holder before stator, and what it is marked as 23 is coil holder after stator；Stator branch Coil holder 23 is all made of engineering plastics after coil holder 22 and stator before frame 70, stator.

Referring to Fig. 1 to Fig. 3 and Fig. 6, generally the stator module 20 includes that stator core 21 and stator winding (are not marked Out) outside, and for easy-to-connect and securely, the stator module 20 further includes terminal plate 29, more pieces of contact pins 28 and plug 27；It is more Piece respective one end of contact pin 28 is electrically connected with the stator coil (not shown) of stator module 20 respectively, the respective other end respectively with The terminal plate 29 is electrically connected and fixes the terminal plate 29；The electrical connection of plug 27 is fixed on the terminal plate 29.

Due to the special construction of the utility model brushless motor so that the utility model brushless motor can be mounted on electricity and blow In the handle housing of wind, user does not see fan blade 40, and safety is very high.

Referring to fig. 2, Fig. 7 and Fig. 8, the utility model additionally provide a kind of air duct shell 10, are used for motor, the air duct Shell 10 is the toroidal shell 10 of both ends open and inner hollow, is provided with the fore bearing that can accommodate motor in the air duct shell 10 50 and rear bearing 60 bearing fixed block 11, which is fixed on the air duct shell by least two pieces of ribs 12 On 10 inner wall, the air duct 13 of air circulation is respectively formed between adjacent two ribs 12, the length of the bearing fixed block 11 is small In the length of the air duct shell 10, the bearing fixed block 11 is equipped with the first central through hole 111, the bearing fixed block 11 Front and rear is respectively equipped with the fore bearing room 112 and rear bearing room 113 being connected with the first central through hole 111, and described first Central through hole 111, fore bearing room 112 and rear bearing room 113 possess common central axis.

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

1. a kind of brushless motor on hair dryer, including stator module (20), rotor assembly (30), fan blade (40), front axle Hold (50) and rear bearing (60)；The rotor assembly (30) includes shaft (31) and permanent magnet element (32)；It is characterized by:

It further include the air duct shell (10) of both ends open inner hollow and the stator support (70) for being equipped with the second central through hole (71)； The bearing fixed block (11) that can accommodate the fore bearing (50) and rear bearing (60), the axis are provided in the air duct shell (10) It holds fixed block (11) to be fixed on the inner wall of the air duct shell (10) by least two pieces of ribs (12), adjacent two ribs (12) air duct (13) of air circulation is respectively formed between, the length of the bearing fixed block (11) is less than the air duct shell (10) Length, the bearing fixed block (11) be equipped with the first central through hole (111), the front and rear of the bearing fixed block (11) It is respectively equipped with the fore bearing room (112) and rear bearing room (113) being connected with the first central through hole (111), first center Through-hole (111), fore bearing room (112) and rear bearing room (113) possess common central axis；The permanent magnet element (32) is solid It is scheduled on the front end of the shaft (31)；The fore bearing (50) is mounted on the fore bearing room (112) of the bearing fixed block (11) Interior, the rear bearing (60) is mounted in the rear bearing room (113) of the bearing fixed block (11), stator support (70) position It in the air duct shell (10) and is fixed on the front end face of the bearing fixed block (11), the stator module (20) is fixed On the stator support (70), some is located in the air duct shell (10) stator module (20), and in addition one The stator module (20) divided is located at except the air duct shell (10), the rear end difference of the shaft (31) of the rotor assembly (30) From the inner hole of fore bearing (50) and the inner hole insertion of rear bearing (60), the permanent magnet element (32) of the rotor assembly (30) is located at The stator core (21) of the stator module (20) it is interior intracavitary, the fan blade (40) is located in the air duct shell (10) simultaneously It is fixed on the rear end of the shaft (31).

2. the brushless motor according to claim 1 on hair dryer, it is characterised in that:

The fore bearing room (112) and rear bearing room (113) of the bearing fixed block (11) and the air duct shell (10) possess altogether Same central axis.

3. the brushless motor according to claim 1 on hair dryer, it is characterised in that:

The stator support (70) includes cylindrical bottom plate (72), and is located at bottom plate (72) edge towards the same direction Three pillars (73)；Second central through hole (71) is arranged on the bottom plate (72), also sets up on the bottom plate (72) There are three countersunk head through-hole (74)；Threaded hole (739) are designed on each pillar (73).

4. the brushless motor according to claim 1 on hair dryer, it is characterised in that:

It is greater than to be located in the air duct shell (10) positioned at the length of the stator module (20) of the air duct shell (10) outside and determines The length of sub-component (20).

5. according to claim 1 to 4 described in any item brushless motors on hair dryer, it is characterised in that:

The stator module (20) includes terminal plate (29), more pieces of contact pins (28) and plug (27)；More pieces of contact pins (28) are respective One end is electrically connected with the stator coil of stator module (20) respectively, and the respective other end is electrically connected with the terminal plate (29) respectively And fix the terminal plate (29)；Plug (27) electrical connection is fixed on the terminal plate (29).

6. a kind of air duct shell (10) is used for motor, it is characterised in that:

The air duct shell (10) is the toroidal shell of both ends open and inner hollow, is provided with and can hold in the air duct shell (10) Receive the fore bearing (50) of motor and the bearing fixed block (11) of rear bearing (60), which passes through at least two pieces of muscle Item (12) is fixed on the inner wall of the air duct shell (10), and the air duct of air circulation is respectively formed between adjacent two ribs (12) (13), the length of the bearing fixed block (11) is less than the length of the air duct shell (10), and the bearing fixed block (11) sets Have the first central through hole (111), the front and rear of the bearing fixed block (11) is respectively equipped with and the first central through hole (111) The fore bearing room (112) and rear bearing room (113) being connected, first central through hole (111), fore bearing room (112) and after Bearing chamber (113) possesses common central axis.

7. air duct shell (10) according to claim 6, it is characterised in that: