CN208522566U - The assembling structure of electric machine casing and stator module, electric machine casing and brushless motor - Google Patents

Abstract

The utility model relates to the assembling structure of a kind of electric machine casing and stator module, electric machine casing and brushless motors, the assembling structure includes electric machine casing and stator module, it is provided at least two guide vanes in electric machine casing and is fixed on the annular core element on electric machine casing inner wall, the air duct of air circulation is respectively formed between adjacent two guide vanes, annular core element is successively arranged the first central through hole, the first cavity and the second cavity from back to front, and the front and rear of the first central through hole of annular core element is respectively fore bearing room and rear bearing room；The stator core of stator module is fixed in the second cavity of annular core element, the rear end of stator module is located in the first cavity of annular core element, some is located in electric machine casing the stator core of stator module, and the stator core of another part is located at except electric machine casing.The utility model assembling structure and brushless motor have many advantages, such as that structurally reasonable, simple process, good heat dissipation, good insulation preformance, at low cost and service life are long.

Description

The assembling structure of electric machine casing and stator module, electric machine casing and brushless motor

[technical field]

The utility model relates to small-sized or micromotors especially to relate to more particularly to small-sized or miniature brushless motor And small-sized or miniature brushless motor electric machine casing and stator module assembling structure.

[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 small-sized or miniature brushless motor of the prior art include electric machine casing, stator module, rotor assembly, motor rear cover, Fore bearing and rear bearing, fore bearing are mounted in the bearing chamber of electric machine casing, and rear bearing is mounted in the bearing chamber of motor rear cover, 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 and rear bearing Inner hole insertion, motor rear cover is fixed on the open end of electric machine casing, the permanent magnet element on rotor assembly be located at fore bearing with Between rear bearing, and matched with stator module；The brushless motor of this structure is wrapped in electric machine casing due to stator module Interior, 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, fore bearing The concentricity of central axis and the central axis of rear bearing it is difficult to ensure that.

[utility model content]

A kind of electricity is provided the technical problem to be solved by the present invention is to avoid above-mentioned the deficiencies in the prior art place The assembling structure of casing body and stator module, electric machine casing and brushless motor, have structurally reasonable, simple process, good heat dissipation, The advantages that good insulation preformance, long at low cost and service life.

The utility model solve the technical problem the technical solution adopted is that:

The assembling structure of a kind of electric machine casing and stator module is provided, motor, including electric machine casing and stator pack are used for Part, the stator module include stator core and stator winding；The electric machine casing is the annular of both ends open and inner hollow Shell is provided with for fixing the stator module and can accommodate the fore bearing of motor and the annular of rear bearing in the electric machine casing Core, the annular core element are fixed on the inner wall of the electric machine casing by least two guide vanes, adjacent two guide vanes it Between be respectively formed the air duct of air circulation, the length of the annular core element is less than the length of the electric machine casing, the annular core element It is successively arranged the first interconnected central through hole from back to front, avoids the first cavity of the stator module rear end and is used to Second cavity of the stator core outer circumference surface of the fixed stator module, the front of the first central through hole of the annular core element It is respectively fore bearing room and rear bearing room with rear portion, first central through hole, fore bearing room, rear bearing room and the second cavity are gathered around There is common central axis；The stator core of the stator module is fixed in the second cavity of the annular core element, described fixed The rear end of sub-component is located in the first cavity of the annular core element, the stator core of the stator module some be located at In the electric machine casing, the stator core of another part is located at except the electric machine casing.

The fore bearing room and rear bearing room of the annular core element and the electric machine casing possess common central axis.

The quantity of the guide vane is 3+2N item, and wherein N is the integer more than or equal to zero.

The length of stator core outside the electric machine casing be greater than be located at the intracorporal stator core of the motor casing it Length.

The stator module further includes making the stator core after being injection moulded the stator core with engineering plastics Each stator slot and each stator tooth has all wrapped up one layer of plastic wall and two ends of the stator core have wrapped up one layer respectively Plastics front end and plastics rear end.

The plastics front end is also injection moulded with engineering plastics simultaneously multiple plastics boss, on each plastics boss It is fixed with binding post, the plastics boss and binding post and the stator slot and stator tooth equivalent amount.

A kind of electric machine casing is additionally provided, motor is used for, the electric machine casing is the ring of both ends open and inner hollow Shape shell is provided with the stator module for fixing motor in the electric machine casing and can accommodate the fore bearing and rear bearing of motor Annular core element, the annular core element are fixed on the inner wall of the electric machine casing by least two guide vanes, adjacent two wind-guidings The air duct of air circulation is respectively formed between piece, the length of the annular core element is less than the length of the electric machine casing, the annular Core be successively arranged from back to front the first interconnected central through hole, avoid the stator module rear end the first cavity and For the second cavity of the stator core outer circumference surface of fixed stator component, the front of the first central through hole of the annular core element It is respectively fore bearing room and rear bearing room with rear portion, first central through hole, fore bearing room, rear bearing room and the second cavity are gathered around There is common central axis.

A kind of brushless motor, including electric machine casing, stator module, fore bearing and rear bearing are provided again；The stator pack Part includes stator core and stator winding；The electric machine casing is the toroidal shell of both ends open and inner hollow, the motor casing It is provided in vivo for fixing the stator module and the annular core element of the fore bearing and rear bearing, the annular core element can be accommodated It is fixed on the inner wall of the electric machine casing by least two guide vanes, is respectively formed air circulation between adjacent two guide vanes Air duct, the length of the annular core element is less than the length of the electric machine casing, and the annular core element is successively arranged from back to front Interconnected the first central through hole avoids the first cavity of the stator module rear end and for fixing the stator module Stator core outer circumference surface the second cavity, the front and rear of the first central through hole of the annular core element is respectively front axle Room and rear bearing room are held, first central through hole, fore bearing room, rear bearing room and the second cavity possess common central axis Line；The fore bearing is mounted in the fore bearing room of the annular core element, after the rear bearing is mounted on the annular core element In bearing chamber；The stator core of the stator module is fixed in the second cavity of the annular core element, the stator module Rear end is located in the first cavity of the annular core element, the stator core of the stator module some be located at the motor In shell, the stator core of another part is located at except the electric machine casing.

Compared with the existing technology compared with assembling structure, electric machine casing and the nothing of the utility model electric machine casing and stator module The beneficial effect of brush motor is:

One, the utility model is specially provided with the annular core element that can accommodate fore bearing and rear bearing, ring in electric machine casing The first cavity and use that shape core is successively arranged the first interconnected central through hole from back to front, avoids stator module rear end Come the second cavity of the stator core outer circumference surface of fixed stator component, the front and rear of the first central through hole of annular core element Respectively fore bearing room and rear bearing room, the first central through hole, fore bearing room, rear bearing room and the second cavity possess in common Mandrel line possesses common central axis；Using this structure, fore bearing room and rear bearing room are arranged on the same part, The concentricity of handling ease and simple process, fore bearing room and rear bearing room is high, and when so that motor operating, noise is smaller；

Two, positioned at the intracorporal annular core element of motor casing by inner wall that at least two pieces of guide vanes are fixed on electric machine casing, The air duct of air circulation is respectively formed between adjacent two guide vanes, and fan blade is located in electric machine casing, in motor operation When, fan blade is by the rear end of air inspiration to electric machine casing, then is sent to behind the front end of electric machine casing by each air duct and is arranged again Out, in this way under the action of fan blade, air is arranged from the electric machine casing other end again after entering through each air duct from electric machine casing one end Out, this frame mode is very reasonable, can give full play to the effect of fan blade, and the wind speed of hair dryer can be made high, and air quantity is big, and And the service life also can accordingly extend；

Three, there is no electric motor end cap and screw, directly stator module is fixed in the annular core element of electric machine casing, so that knot Structure is simple；

Four, stator module is fixed in the annular core element of electric machine casing, some is located in electric machine casing stator module, Another part even most stator module is convenient for the heat dissipation of stator module, so that this reality except electric machine casing in this way With novel brushless motor good heat dissipation, temperature rise is lower, lasts a long time；

Five, 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 guide vane rejects heat in each air duct, and air duct shell can also be arrived again through each guide vane by bearing fixed block Heat dissipation discharge, heat dissipation effect are very good after on body；

Six, each stator slot and each stator tooth for making stator core after being injection moulded stator core with engineering plastics all wrap One layer of plastics front end and plastics rear end has been wrapped up respectively in two ends for having wrapped up in one layer of plastic wall and the stator core Portion, so that stator module has good insulation performance.

In conclusion the assembling structure of the utility model electric machine casing and stator module, electric machine casing and brushless motor tool Have the advantages that structurally reasonable, simple process, good heat dissipation, good insulation preformance, at low cost and service life are long.

[Detailed description of the invention]

Fig. 1 is the axonometric projection schematic diagram of the assembling structure of the utility model electric machine casing and stator module；

Fig. 2 is the axonometric projection schematic diagram in another direction of assembling structure

Fig. 3 is the orthographic projection main view schematic cross-sectional view of the assembling structure；

Fig. 4 is the orthographic projection right side view of the assembling structure；

Fig. 5 is the axonometric projection schematic diagram of the stator module of the assembling structure；

Fig. 6 is the axonometric projection schematic diagram in another direction of stator module；

Fig. 7 is the orthographic projection main view schematic cross-sectional view of the stator module；

Fig. 8 is the orthographic projection left view schematic diagram of the stator module；

Fig. 9 is the axonometric projection schematic diagram of the electric machine casing of the assembling structure；

Figure 10 is the axonometric projection schematic diagram in another direction of electric machine casing；

Figure 11 is the orthographic projection main view schematic cross-sectional view of the electric machine casing；

Figure 12 is the orthographic projection left view schematic diagram of the electric machine casing.

[specific embodiment]

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

Referring to Fig. 1 to Figure 12, a kind of assembling structure of electric machine casing and stator module is used for motor, including motor casing Body 10 and stator module 20, the stator module 20 include stator core 21 and stator winding (not shown)；The electric machine casing 10 be the toroidal shell of both ends open and inner hollow, is provided in the electric machine casing 10 for fixing 20 He of stator module The fore bearing of motor and the annular core element 11 of rear bearing can be accommodated, which is fixed on by least two guide vanes 12 On the inner wall of the electric machine casing 10, the air duct 13 of air circulation, the toroidal cores are respectively formed between adjacent two guide vanes 12 The length of body 11 is less than the length of the electric machine casing 10, and the annular core element 11 is successively arranged interconnected the from back to front One central through hole 111, the first cavity 119 for avoiding 20 rear end of stator module and for fix the stator module 20 it Second cavity 118 of 21 outer circumference surface of stator core, the front and rear point of the first central through hole 111 of the annular core element 11 Not Wei fore bearing room 112 and rear bearing room 113, first central through hole 111, fore bearing room 112, rear bearing room 113 and Two cavities 118 possess common central axis, the internal diameter of fore bearing room 112 and rear bearing room 113 can be designed to and first The internal diameter of central through hole 111 is equal, the internal diameter of fore bearing room 112 and rear bearing room 113 can also be designed to than the first center The internal diameter of through-hole 111 is bigger；The stator core 21 of the stator module 20 is fixed on the second cavity 118 of the annular core element 11 It is interior, the stator core 21 of stator module 20 can be fixed on the annular core element by the way of glue, interference and/or buckle In 11 the second cavity 118, the rear end of the stator module 20 is located in the first cavity 119 of the annular core element 11, institute State stator module 20 stator core 21 some be located in the electric machine casing 10, the stator core of another part 21 Except the electric machine casing 10.

Referring to Fig. 3, Fig. 4, Fig. 9 to Figure 12, actually electric machine casing 10, annular core element 11 and guide vane 12 is same zero Part, they are also possible to different assembling parts and form certainly.

Referring to Fig. 3 and Figure 11, the fore bearing room 112 and rear bearing room 113 of the annular core element 11 and the electric machine casing 10 possess common central axis.

Referring to fig. 4 and Figure 12, in order to reinforce the mechanical strength and securely of annular core element 11, the quantity of the guide vane 12 is 3+2N item, wherein N is the integer more than or equal to zero；The utility model uses 7 guide vanes 12, i.e. N=2.The shape of guide vane 12 Shape can use the design of Fluid Surface.

Referring to Fig. 3, the length of the stator core 21 outside the electric machine casing 10, which is greater than, is located at the electric machine casing 10 The length of interior stator core 21；That is, the stator core 21 only has small part to be located in the electric machine casing 10, greatly Partial stator core 21 is located at except the electric machine casing 10.

Referring to Fig. 1 to Fig. 3 and Fig. 5 to Fig. 8, in order to which stator module has good insulation performance, the stator module 20 It further include making each stator slot 211 of the stator core 21 and each after being injection moulded the stator core 21 with engineering plastics One layer of plastics have been wrapped up respectively in two ends that stator tooth 212 has all wrapped up one layer of plastic wall 219 and the stator core 21 Front end 218 and plastics rear end 217.The stator slot 211 of the utility model and the quantity of stator tooth 212 are all 3M, wherein M For positive integer；Such as the utility model is with regard to 6 stator slot 211 and 6 stator tooths 212, i.e. M=2.

Referring to Fig. 1 to Fig. 3 and Fig. 5 to Fig. 8, for easy-to-connect and securely, the plastics front end 218 also recruitment simultaneously Engineering plastics injection moulding has multiple plastics boss 2189, and binding post 29, each binding post 29 are fixed on each plastics boss 2189 Directly be fixed on corresponding plastic cement boss 2189 by way of being molded, the plastics boss 2189 and binding post 29 with it is described 212 equivalent amount of stator slot 211 and stator tooth.Each the end of a thread of stator winding (not shown) and each line tail can pass through the side of scolding tin Formula is electrically connected on each binding post 29.

Referring to Fig. 3 and referring to Fig. 9 to Figure 12, the utility model additionally provides a kind of electric machine casing 10, is used for motor, institute State the toroidal shell that electric machine casing 10 is both ends open and inner hollow, be provided in the electric machine casing 10 for fix motor it Stator module 20 and the fore bearing of motor and the annular core element 11 of rear bearing can be accommodated, which is led by least two Wind piece 12 is fixed on the inner wall of the electric machine casing 10, and the air duct of air circulation is respectively formed between adjacent two guide vanes 12 13, the length of the annular core element 11 is less than the length of the electric machine casing 10, and the annular core element 11 is successively set from back to front There is the first interconnected central through hole 111, avoid the first cavity 119 of 20 rear end of stator module and for fixing State the second cavity 118 of 21 outer circumference surface of stator core of stator module 20, the first central through hole 111 of the annular core element 11 Front and rear be respectively fore bearing room 112 and rear bearing room 113, first central through hole 111, fore bearing room 112, after Bearing chamber 113 and the second cavity 118 possess common central axis.

Referring to Fig. 1 to Figure 12, the utility model additionally provides a kind of brushless motor, including electric machine casing 10, stator module 20, fore bearing (not shown) and rear bearing (not shown)；The stator module 20 includes that stator core 21 and stator winding (are not drawn Out)；The electric machine casing 10 is the toroidal shell of both ends open and inner hollow, is provided in the electric machine casing 10 for fixing The stator module 20 and the annular core element 11 that can accommodate the fore bearing and rear bearing, the annular core element 11 pass through at least two Guide vane 12 is fixed on the inner wall of the electric machine casing 10, and the air duct of air circulation is respectively formed between adjacent two guide vanes 12 13, the length of the annular core element 11 is less than the length of the electric machine casing 10, and the annular core element 11 is successively set from back to front There is the first interconnected central through hole 111, avoid the first cavity 119 of 20 rear end of stator module and for fixing State the second cavity 118 of 21 outer circumference surface of stator core of stator module 20, the first central through hole 111 of the annular core element 11 Front and rear be respectively fore bearing room 112 and rear bearing room 113, first central through hole 111, fore bearing room 112, after Bearing chamber 113 and the second cavity 118 possess common central axis；The fore bearing is mounted on the fore bearing of the annular core element In room 112, the rear bearing is mounted in the rear bearing room 113 of the annular core element 11；The stator iron of the stator module 20 Core 21 is fixed in the second cavity 118 of the annular core element 11, can be by the way of glue and/or interference by stator module 20 stator core 21 is fixed in the second cavity 118 of the annular core element 11, and the rear end of the stator module 20 is located at In first cavity 119 of the annular core element 11, the stator core 21 of the stator module 20 some be located at the motor In shell 10, the stator core 21 of another part is located at except the electric machine casing 10.The actually brushless electricity of the utility model Machine is exactly the assembling structure of the utility model electric machine casing and stator module that use, and brushless motor further includes rotor assembly (not shown) and fan blade (not shown)；The rotor assembly includes shaft and permanent magnet element, and permanent magnet element is fixed on described The front end of shaft, 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 motor casing Rear end that is internal and being fixed on the shaft.

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 (10)

1. the assembling structure of a kind of electric machine casing and stator module is used for motor, including electric machine casing (10) and stator module (20), the stator module (20) includes stator core (21) and stator winding；It is characterized by:

The electric machine casing (10) is the toroidal shell of both ends open and inner hollow, be provided in the electric machine casing (10) for It fixes the stator module (20) and the fore bearing of motor and the annular core element (11) of rear bearing can be accommodated, the annular core element (11) It is fixed on the inner wall of the electric machine casing (10) by least two guide vanes (12), between adjacent two guide vanes (12) The air duct (13) of air circulation is formed, the length of the annular core element (11) is less than the length of the electric machine casing (10), described Annular core element (11) is successively arranged interconnected the first central through hole (111) from back to front, avoids the stator module (20) The first cavity (119) of rear end and for fix the second of the stator core of the stator module (20) (21) outer circumference surface appearance Chamber (118), the front and rear of the first central through hole (111) of the annular core element (11) be respectively fore bearing room (112) and Rear bearing room (113), first central through hole (111), fore bearing room (112), rear bearing room (113) and the second cavity (118) possess common central axis；The stator core (21) of the stator module (20) is fixed on the annular core element (11) The second cavity (118) in, the rear end of the stator module (20) is located at the first cavity (119) of the annular core element (11) Interior, some is located in the electric machine casing (10) for the stator core (21) of the stator module (20), another part Stator core (21) is located at except the electric machine casing (10).

2. the assembling structure of electric machine casing according to claim 1 and stator module, it is characterised in that:

The fore bearing room (112) and rear bearing room (113) and the electric machine casing (10) of the annular core element (11) possess jointly Central axis.

3. the assembling structure of electric machine casing according to claim 1 and stator module, it is characterised in that:

The quantity of the guide vane (12) is 3+2N item, and wherein N is the integer more than or equal to zero.

4. the assembling structure of electric machine casing according to claim 1 and stator module, it is characterised in that:

It is greater than to be located in the electric machine casing (10) positioned at the length of the stator core (21) of the electric machine casing (10) outside and determines The length of sub- iron core (21).

5. according to claim 1 to 4 described in any item electric machine casings and the assembling structure of stator module, it is characterised in that:

The stator module (20) further includes making the stator after being injection moulded the stator core (21) with engineering plastics Each stator slot (211) and each stator tooth (212) of iron core (21) have all wrapped up one layer of plastic wall (219) and the stator core (21) one layer of plastics front end (218) and plastics rear end (217) has been wrapped up respectively in two ends.

6. the assembling structure of electric machine casing according to claim 5 and stator module, it is characterised in that:

The plastics front end (218) also has multiple plastics boss (2189), each plastics with engineering plastics injection moulding simultaneously It is fixed on boss (2189) binding post (29), the plastics boss (2189) and binding post (29) and the stator slot (211) With stator tooth (212) equivalent amount.

7. a kind of electric machine casing (10) is used for motor, it is characterised in that:

The electric machine casing (10) is the toroidal shell of both ends open and inner hollow, be provided in the electric machine casing (10) for It fixes the stator module of motor and the fore bearing of motor and the annular core element (11) of rear bearing can be accommodated, the annular core element (11) is logical It crosses at least two guide vanes (12) to be fixed on the inner wall of the electric machine casing (10), equal shape between adjacent two guide vanes (12) At the air duct (13) of air circulation, the length of the annular core element (11) is less than the length of the electric machine casing (10), the ring Shape core (11) is successively arranged interconnected the first central through hole (111) from back to front, avoids the stator module rear end The first cavity (119) and the stator core outer circumference surface for fixed stator component the second cavity (118), the toroidal cores The front and rear of the first central through hole (111) of body (11) is respectively fore bearing room (112) and rear bearing room (113), described First central through hole (111), fore bearing room (112), rear bearing room (113) and the second cavity (118) possess common central axis Line.

8. electric machine casing (10) according to claim 7, it is characterised in that:

The fore bearing room (112) and rear bearing room (113) and the electric machine casing (10) of the annular core element (11) possess jointly Central axis.

9. a kind of brushless motor, including electric machine casing (10), stator module (20), fore bearing and rear bearing；The stator module It (20) include stator core (21) and stator winding；It is characterized by:

The electric machine casing (10) is the toroidal shell of both ends open and inner hollow, be provided in the electric machine casing (10) for The fixed stator module (20) and the annular core element (11) that can accommodate the fore bearing and rear bearing, the annular core element (11) are logical It crosses at least two guide vanes (12) to be fixed on the inner wall of the electric machine casing (10), equal shape between adjacent two guide vanes (12) At the air duct (13) of air circulation, the length of the annular core element (11) is less than the length of the electric machine casing (10), the ring After shape core (11) is successively arranged interconnected the first central through hole (111) from back to front, avoids the stator module (20) The first cavity (119) of end and for fixing the second cavity of the stator core of the stator module (20) (21) outer circumference surface (118), the front and rear of the first central through hole (111) of the annular core element (11) be respectively fore bearing room (112) and after Bearing chamber (113), first central through hole (111), fore bearing room (112), rear bearing room (113) and the second cavity (118) Possess common central axis；The fore bearing is mounted in the fore bearing room (112) of the annular core element, the rear bearing peace In the rear bearing room (113) of the annular core element (11)；The stator core (21) of the stator module (20) is fixed on institute In the second cavity (118) for stating annular core element (11), the rear end of the stator module (20) is located at the annular core element (11) The first cavity (119) in, the stator core (21) of the stator module (20) some be located at the electric machine casing (10) Interior, the stator core (21) of another part is located at except the electric machine casing (10).

10. brushless motor according to claim 9, it is characterised in that:

It is greater than to be located in the electric machine casing (10) positioned at the length of the stator core (21) of the electric machine casing (10) outside and determines The length of sub- iron core (21).