CN219247554U - Brushless motor and blower - Google Patents

Abstract

The application relates to a brushless motor and air-blower, brushless motor are used for the air-blower, and the air-blower still includes the mounting bracket, and the mounting bracket is provided with rotatory draw-in groove along circumference, and brushless motor includes: the stator assembly comprises a stator bracket and a stator core, the stator core is sleeved on the stator bracket, the stator bracket is provided with connecting feet along the circumferential direction, and the connecting feet are in one-to-one correspondence with the rotary clamping grooves; a rotor assembly rotatably disposed on the stator support; the rotary clamping groove comprises a first groove position and a second groove position which are communicated with each other, and the connecting pin penetrates through the first groove position and rotates into the second groove position to be fixed in the rotary clamping groove in a clamping manner. Because the brushless motor provided by the application can split the rotor assembly and the stator assembly firstly and then assemble the assembly to the mounting frame of the blower, the application can ensure that the air gap between the stator assembly and the rotor assembly is uniform in the assembly process; meanwhile, the method is easy to operate, convenient and fast, and high in assembly efficiency.

Description

Brushless motor and blower

Technical Field

The application relates to the technical field of motors, in particular to a brushless motor and a blower.

Background

The blower for the air conditioning system of the automobile is an important part in the air conditioning system of the automobile for feeding cold flow or hot flow generated by the air conditioner into the interior of the automobile to provide a comfortable driving environment and riding environment for the interior of the automobile.

To further reduce noise and improve user experience, a brushless motor is generally used as a driving device for a blower for an automotive air conditioning system. The brushless motor has higher assembly precision requirement in the assembly process due to the structural specificity.

However, in the prior art, the stator assembly and the rotor assembly of the brushless motor are usually assembled in separate order, that is, the stator assembly is first mounted on the mounting frame of the blower, and then the rotor assembly is mounted on the mounting frame. In the assembly process, because the internal space of the blower is limited to be narrow, the gap between the stator assembly and the rotor assembly is difficult to ensure to be uniform, the installation process is also relatively complicated, and inconvenience exists.

Disclosure of Invention

Based on this, this application provides a brushless motor and air-blower device to the inconvenience exists when the brushless motor is assembled on the mounting bracket of air-blower among the prior art.

In a first aspect, the present application provides a brushless motor, the brushless motor is used for the air-blower, the air-blower still includes the mounting bracket, the mounting bracket is provided with rotatory draw-in groove along circumference, brushless motor includes:

the stator assembly comprises a stator bracket and a stator core, wherein the stator core is sleeved on the stator bracket, connecting pins are arranged on the stator bracket along the circumferential direction, and the connecting pins correspond to the rotating clamping grooves one by one; and

a rotor assembly rotatably disposed on the stator support;

the rotary clamping groove comprises a first groove position and a second groove position which are communicated with each other, and the connecting pin penetrates through the first groove position and rotates into the second groove position to be clamped and fixed in the rotary clamping groove.

In one embodiment, the connecting pin includes a connecting portion and a limiting portion, the connecting portion is connected with the stator support, and is slidably disposed in the first slot and the second slot, and the limiting portion is disposed on a side, away from the stator support, of the connecting portion, and is fixedly clamped with the mounting frame at the second slot.

In one embodiment, the mounting frame is provided with a boss at the second slot, the boss protrudes from the side wall of the mounting frame, and abuts against the limiting portion at the second slot.

In one embodiment, the contact area of the boss when the boss is abutted with the limiting portion is smaller than the area of the limiting portion projected on the side wall of the mounting frame.

In one embodiment, a guide portion is disposed at one end of the boss, which is close to the first slot, and the height of the guide portion gradually increases along the direction that the first slot is close to the second slot.

In one embodiment, a guiding inlet is arranged at the communication position of the second slot position and the first slot position, and the guiding inlet is furled along the direction that the first slot position is close to the second slot position.

In one embodiment, the rotor assembly comprises a rotor housing, a rotating shaft and magnetic shoes, the rotating shaft is rotatably arranged on the stator support, the rotor housing is sleeved on the rotating shaft and connected with the rotating shaft, the stator assembly is arranged in the rotor housing, and the magnetic shoes are arranged on the inner side wall of the rotor housing.

In one embodiment, the direction of the first slot facing the second slot is the rotation direction of the rotating shaft when the brushless motor works.

In one embodiment, the stator support is further provided with a bearing cavity, a bearing is arranged in the bearing cavity, and the bearing is sleeved on the rotating shaft.

In a second aspect, the present application provides a blower comprising a mounting frame and any of the brushless motors provided herein, the brushless motors being connected to the mounting frame.

Because the brushless motor that this application provided, it can be earlier to rotor subassembly and stator subassembly partial shipment, and the final assembly is to on the mounting bracket of air-blower again, therefore this application does not have the narrow and small restriction in space when assembling stator subassembly and rotor subassembly, can ensure in the assembly process that the air gap between stator subassembly and the rotor subassembly is even, guarantee stator subassembly and rotor subassembly mounted position's accuracy promptly. Meanwhile, the utility model provides a have sufficient operating space when the partial shipment, only need carry out rotation fixed with brushless motor when the assembly, easy operation, convenient and fast has higher assembly efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a brushless motor according to a first embodiment of the present application;

fig. 2 is a cross-sectional view of a brushless motor according to an embodiment of the present application;

fig. 3 is an exploded view of a brushless motor according to an embodiment of the present disclosure;

fig. 4 is an enlarged view of a portion a in fig. 3;

fig. 5 is an enlarged view of a portion B in fig. 3.

Reference numerals: 100. a stator assembly; 110. a stator support; 111. a first bracket portion; 112. a second bracket portion; 113. a bearing cavity; 114. a bearing; 120. a stator core; 130. a connecting pin; 131. a connection part; 132. a limit part; 200. a rotor assembly; 210. a rotor housing; 220. a rotating shaft; 230. a magnetic shoe; 300. a mounting frame; 310. a rotary clamping groove; 311. a first slot; 312. a second slot; 313. a guide inlet; 320. fixing the support legs; 330. a tube section; 340. a step portion; 350. a boss; 351. a guiding part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It should be noted that the illustrations provided in the present embodiment are merely schematic illustrations of the basic idea of the present utility model.

The structures, proportions, sizes, etc. shown in the drawings attached hereto are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are particularly adapted to the specific details of construction and the use of the utility model, without departing from the spirit or essential characteristics thereof, which fall within the scope of the utility model as defined by the appended claims.

References in this specification to orientations or positional relationships as "upper", "lower", "left", "right", "intermediate", "longitudinal", "transverse", "horizontal", "inner", "outer", "radial", "circumferential", etc., are based on the orientation or positional relationships shown in the drawings, are also for convenience of description only, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1

An embodiment of the present application provides a brushless motor, as shown in fig. 1 to 5, the brushless motor is used for the air-blower, the air-blower still includes mounting bracket 300, mounting bracket 300 is provided with rotatory draw-in groove 310 along circumference, the brushless motor includes:

the stator assembly 100 comprises a stator bracket 110 and a stator core 120, wherein the stator core 120 is sleeved on the stator bracket 110, the stator bracket 110 is provided with connecting feet 130 along the circumferential direction, and the connecting feet 130 are in one-to-one correspondence with the rotating clamping grooves 310; and

a rotor assembly 200 rotatably provided on the stator frame 110;

the rotating clamping groove 310 comprises a first groove 311 and a second groove 312 which are mutually communicated, and the connecting pin 130 passes through the first groove 311 and rotates into the second groove 312 to be clamped and fixed in the rotating clamping groove 310.

As shown in fig. 1, in the present embodiment, a blower may include a mounting frame 300, a fan assembly, and a brushless motor, as exemplarily illustrated. Wherein the fan assembly may serve as a functional element of a blower that, when rotated, functions to drive air flow therethrough to create an air flow. The brushless motor may then be used as a power element for a blower that is in communication with the fan assembly and drives the fan assembly in rotation. And the mounting frame 300 may be used as a mounting member of a fan assembly and a brushless motor, i.e., the fan assembly and the brushless motor are disposed on the mounting frame 300 so that the blower may be applied to an automotive air conditioning system.

As shown in fig. 1 and 2, in the present embodiment, the mounting frame 300 may be provided in a disk shape, and an outer edge thereof may be provided with fixing legs 320, and bolt members may be penetrated on the fixing legs 320 for fixing the blower. The center of the mounting frame 300 may be provided with a pipe portion 330 and a stepped portion 340, and the pipe portion 330 may be provided in a circular tube shape and coaxially with the mounting frame 300; the stepped portion 340 may be provided in a circular plate shape and is provided at the middle of the tube portion 330. The tube portion 330 and the stepped portion 340 may each be integrally provided with the mounting frame 300. The brushless motor may extend at least partially into the tube portion 330 and may be coupled with the stepped portion 340.

The stator bracket 110 may be provided in a solid of revolution, which specifically includes a first bracket portion 111 and a second bracket portion 112. Wherein the first bracket part 111 may be provided in a circular tube shape and the second bracket part 112 may be provided in a circular ring shape. The first and second bracket parts 111 and 112 may be coaxially disposed, and may be integrally formed. The second bracket part 112 may be positioned at one end of the first bracket part 111 and is sleeved outside the first bracket part 111. In the present embodiment, when the brushless motor is connected to the mount 300, the second bracket portion 112 abuts on the stepped portion 340. The stator core 120 may be formed by stacking a plurality of stator laminations, which may be cylindrical in shape, and may be sleeved and fixed on the first bracket portion 111. The stator assembly 100 further includes stator windings, which may be wound from metal wires, which are wound around the stator core 120 and serve to turn on and off current.

As shown in fig. 1 and 2, in the present embodiment, the rotor assembly 200 is connected to the first bracket portion 111, and is rotatably provided on the first bracket portion 111. When the brushless motor is operated, the rotor assembly 200 rotates and converts electrical energy into mechanical energy output.

As shown in fig. 2 and 3, the connection pins 130 may be provided on the second bracket part 112, and may be provided at five equally spaced intervals in the circumferential direction of the second bracket part 112. Of course, in some embodiments, the number of connection pins 130 may be two, three, four, or more. In this embodiment, the rotating slot 310 may be formed on the step 340. Since the rotation card slots 310 are in one-to-one correspondence with the connection pins 130, the number of the rotation card slots 310 is also set to five.

As shown in fig. 3 and 4, the rotation card slot 310 includes a first slot 311 and a second slot 312, and the first slot 311 and the second slot 312 communicate with each other. Wherein the first slot 311 is larger, and the connection pin 130 can pass through the first slot 311; the second slot position 312 is smaller, the connecting pin 130 can rotate into the second slot position 312 after passing through the first slot position 311, and is clamped and fixed in the second slot position 312, so as to realize the fixation in the rotating clamping slot 310.

When the brushless motor is assembled, the stator winding can be wound on the stator core 120 first, and then the stator core 120 is sleeved on the stator bracket 110; meanwhile, the rotor assembly 200 is assembled and formed, and then the rotor assembly 200 is rotatably arranged on the stator bracket 110, so that the split charging of the brushless motor is realized. After the split charging of the brushless motor is completed, the connecting pin 130 and the rotary clamping groove 310 can be placed oppositely, then the connecting pin 130 passes through the first groove position 311, and the brushless motor is rotated again, so that the connecting pin 130 rotates to enter the second groove position 312, and is clamped and fixed in the rotary clamping groove 310, and further the assembly of the brushless motor on the mounting frame 300 of the blower is completed.

It can be appreciated that, because the brushless motor provided in the present application can split the rotor assembly 200 and the stator assembly 100 first, and then assemble the assembly to the mounting frame 300 of the blower, the present application does not have the limitation of narrow space when assembling the stator assembly 100 and the rotor assembly 200, and the air gap between the stator assembly 100 and the rotor assembly 200 can be ensured to be uniform during the assembling process, that is, the accuracy of the mounting positions of the stator assembly 100 and the rotor assembly 200 is ensured. Meanwhile, the utility model provides a have sufficient operating space when the partial shipment, only need carry out rotation fixed with brushless motor when the assembly, easy operation, convenient and fast has higher assembly efficiency.

It will be further appreciated that the assembly between the brushless motor and the mounting frame 300 of the blower provided herein is in a detachable manner, and when the brushless motor fails or is damaged, the brushless motor can be quickly disassembled and assembled, so as to be maintained or replaced.

Specifically, the connection leg 130 includes a connection portion 131 and a limiting portion 132, the connection portion 131 is connected with the stator frame 110 and slidably disposed in the first slot 311 and the second slot 312, and the limiting portion 132 is disposed on a side of the connection portion 131 away from the stator frame 110 and is clamped and fixed with the mounting frame 300 at the second slot 312.

As shown in fig. 3 and 5, in the present embodiment, it is exemplarily illustrated that the connection part 131 and the limiting part 132 may be integrally formed with the stator frame 110. The connection part 131 and the limiting part 132 may each be provided in an arc shape, wherein the connection part 131 may be distant from the second bracket part 112 in the axial direction of the stator bracket 110, and one end thereof may be fixedly connected with the second bracket part 112; the limiting portion 132 may be far away from or near to the axis of the stator support 110 along the radial direction of the stator support 110, and one end of the limiting portion may be fixedly connected with one end of the connecting portion 131 far away from the stator support 110, so that the connecting portion 131 forms an "L" shape. In the present embodiment, the limiting portion 132 is distant from the axis of the stator frame 110 in the radial direction of the stator frame 110.

When the connecting pin 130 is connected with the mounting frame 300, the limiting portion 132 and the connecting portion 131 sequentially pass through the first slot 311. When the brushless motor is rotated, the connecting portion 131 slides and enters the second slot 312 from the first slot 311, and the limiting portion 132 rotates to a position corresponding to the second slot 312 and is clamped and fixed with the mounting frame 300.

It can be appreciated that, in this embodiment, the connecting pin 130 is configured as the connecting portion 131 and the limiting portion 132, so that the connecting pin 130 can be ensured to be stably and effectively clamped and fixed in the second slot 312, and further the stability of the brushless motor when the brushless motor is mounted on the mounting frame 300 is ensured.

More specifically, the mounting bracket 300 is provided with a boss 350 at the second slot 312, and the boss 350 protrudes from a sidewall of the mounting bracket 300 and abuts against the stopper 132 at the second slot 312.

As shown in fig. 3 and 4, in the present embodiment, it is exemplarily illustrated that the boss 350 may be provided on a side of the stepped portion 340 remote from the stator frame 110 and protrude from a sidewall of the stepped portion 340. The number thereof may correspond to the number of the rotation card slots 310 and the connection pins 130, that is, in the present embodiment, the bosses 350 are equally spaced five in the circumferential direction of the stator frame 110 to correspond one-to-one to the rotation card slots 310 and the connection pins 130. For each rotational detent 310, a boss 350 is disposed adjacent to the second slot 312, which may be arcuate in shape.

When the connecting pin 130 rotates from the first slot 311 to the second slot 312, the limiting portion 132 rotates to the upper portion of the boss 350 and abuts against the boss 350, and the boss 350 jacks up the limiting portion 132, so that the limiting portion 132 is tightly clamped and fixed on the second bracket 112.

It can be appreciated that, in this embodiment, the boss 350 is disposed at the second slot 312, and the boss 350 abuts against the limiting portion 132, so that the stability of the connection pin 130 when the card machine is fixed on the mounting frame 300 can be enhanced, so as to ensure the stable running of the brushless motor.

More specifically, the contact area of the boss 350 when it abuts against the stopper 132 is smaller than the area of the stopper 132 projected on the side wall of the mounting frame 300.

As shown in fig. 4 and 5, in the present embodiment, it is exemplarily illustrated that the stopper 132 may be projected on a side of the stepped portion 340 away from the stator frame 110 in the axial direction of the mounting bracket 300, an area of which projected on a side wall of the mounting bracket 300, that is, an area of a cross section of the stopper 132 in the axial direction of the mounting bracket 300. In this embodiment, the maximum radius of the boss 350 may be smaller than the maximum radius of the limiting portion 132, so that the contact area when the boss 350 abuts against the limiting portion 132 is smaller than the area of the cross section of the limiting portion 132.

It can be appreciated that, in this embodiment, by reasonably setting the area of the contact surface of the boss 350 when the boss 350 is in contact with the limiting portion 132, the pressure applied to the boss 350 by the limiting portion 132 when the boss 350 is in contact with the limiting portion 132 can be increased, so as to further improve the stability when the connecting pin 130 is connected with the mounting frame 300.

More specifically, the boss 350 is provided with a guide portion 351 at one end thereof adjacent to the first slot 311, and the height of the guide portion 351 gradually increases in a direction in which the first slot 311 approaches the second slot 312.

As shown in fig. 3 and 4, in the present embodiment, the guide portion 351 is exemplarily illustrated as extending in the circumferential direction of the second bracket portion 112. Along the extending direction of the guide portion 351, the guide portion 351 is arranged in a triangle. The triangular right-angle side thereof is disposed along the circumferential direction of the step portion 340, and the other right-angle side thereof is disposed along the radial direction of the step portion 340, and the triangular hypotenuse thereof is disposed along the inclination of the first groove portion 311 near the second groove portion 312, so that the height of the guide portion 351 is gradually increased.

In the present embodiment, the side wall surface of the guide portion 351 where the triangle is located forms a guide surface. When the connecting pin 130 rotates from the first slot 311 to the second slot 312, the limiting portion 132 rotates. During the rotation, the limiting portion 132 may abut against the guiding surface of the guiding portion 351, and smoothly slide onto the boss 350 under the guiding action of the guiding portion 351 to abut against the boss 350.

It can be appreciated that, in this embodiment, by setting the guiding portion 351 on the boss 350, the limiting portion 132 can be guided when the limiting portion 132 rotates onto the boss 350, so that the limiting portion 132 can be abutted against the boss 350 in a more labor-saving manner, and thus the purpose of fixing the connecting pin 130 and the mounting frame 300 in a clamping manner is achieved more conveniently.

Specifically, a guiding inlet 313 is disposed at one end of the second slot 312 adjacent to the first slot 311, and the guiding inlet 313 is folded along the direction of the first slot 311 adjacent to the second slot 312.

As shown in fig. 3 and 4, in the present embodiment, it is exemplarily illustrated that the first slot 311 is larger, the second slot 312 is smaller, and the first slot 311 and the second slot 312 are communicated with each other, so that the first slot 311 and the second slot 312 form a notch at the communication. The guide inlet 313 is provided at the slot, is provided in a furled shape, and includes a large end and a small end. Wherein the large end of the guiding inlet 313 is close to the first slot 311 and the small end of the guiding inlet 313 is close to the second slot 312. The guide inlet 313 may be formed by a sidewall inclined extension at the slot.

When the connecting pin 130 rotates from the first slot 311 to the second slot 312, the connecting pin 130 can abut against the side wall of the guiding inlet 313 to smoothly enter the second slot 312 under the guiding action of the guiding inlet 313, so as to achieve the purpose of clamping and fixing the second slot 312 and the mounting frame 300.

Specifically, the rotor assembly 200 includes a rotor housing 210, a rotating shaft 220 and a magnetic shoe 230, the rotating shaft 220 is rotatably disposed on the stator support 110, the rotor housing 210 is sleeved on the rotating shaft 220 and is connected with the rotating shaft 220, the stator assembly 100 is disposed in the rotor housing 210, and the magnetic shoe 230 is disposed on an inner sidewall of the rotor housing 210.

As shown in fig. 2 and 3, in the present embodiment, it is exemplarily illustrated that the rotation shaft 220 may be provided in a shape of a rotation body, which may be coaxially provided with the stator frame 110, and rotatably connected with the stator frame 110. One end of the rotation shaft 220 may extend into the first bracket part 111, and the other end of the rotation shaft 220 may be disposed outside the first bracket part 111 and provided with a connection key for driving with a fan assembly of the blower to thereby drive the fan assembly to rotate.

In the present embodiment, the rotor housing 210 may be provided in a cylindrical shape, that is, the rotor housing 210 is open at one end and closed at the other end. The rotor housing 210 may be sleeved on the rotating shaft 220 and fixedly connected with the rotating shaft 220. At the same time, an open end of the rotor case 210 protrudes into the pipe portion 330 so that the rotor case 210 can be covered outside the first bracket portion 111 and the stator core 120. A gap is formed between the inner side wall of the rotor case 210 and the outer side wall of the stator core 120, and the magnetic shoe 230 is disposed on the inner side wall of the rotor case 210 between the gaps. The magnetic shoes 230 are provided in a plurality, and the plurality of magnetic shoes 230 are equally spaced along the circumference of the rotor housing 210.

It can be appreciated that when current is applied to the stator winding, the magnetic shoe 230 rotates and can drive the rotor housing 210 to rotate by the electromagnetic induction principle; the rotor housing 210 drives the rotation shaft 220 to rotate synchronously, so as to convert the electric energy into mechanical energy and output power.

More specifically, the direction of the first slot 311 toward the second slot 312 is the rotation direction of the rotating shaft 220 when the brushless motor is operated.

As shown in fig. 3 and 4, in the present embodiment, it is exemplarily described that the direction of the first groove position 311 toward the second groove position 312 is the circumferential direction of the step portion 340. The connection leg 130 may enter the second slot 312 from the first slot 311 in a clockwise direction as viewed from a side of the second bracket portion 112 remote from the first bracket portion 111. Based on this, in the present embodiment, when the brushless motor is operated, the rotation direction of the rotation shaft 220 should also be rotated in this direction.

It can be appreciated that, because the rotating shaft 220 of the brushless motor provided in the present embodiment rotates along the direction of the first slot 311 toward the second slot 312, when the brushless motor works, the connecting pin 130 can rotate more tightly in the second slot 312 under the centrifugal force of the rotating shaft 220, so that the stability of the brushless motor on the mounting frame 300 can be ensured when the brushless motor works; conversely, the connecting pin 130 is easily removed from the second slot 312.

More specifically, the stator support 110 is further provided with a bearing cavity 113, a bearing 114 is arranged in the bearing cavity 113, and the bearing 114 is sleeved on the rotating shaft 220.

As shown in fig. 2, in the present embodiment, it is exemplarily illustrated that the bearing chamber 113 may be provided on the inner side wall of the first bracket part 111, and may be provided in two; two bearing cavities 113 are provided at both ends of the first bracket portion 111, respectively. The bearings 114 are then in one-to-one correspondence with the bearing cavities 113, i.e. in an embodiment the bearings 114 are provided with two. The bearing 114 is embedded in the bearing cavity 113 and sleeved on the rotating shaft 220 for supporting the rotating shaft 220.

It can be appreciated that, in this embodiment, by providing the bearing cavity 113 and the bearing 114, the friction resistance applied during the rotation of the rotating shaft 220 can be reduced, so as to ensure the smooth rotation of the rotating shaft 220.

The implementation principle of the brushless motor provided in the first embodiment of the application is as follows:

when the brushless motor is assembled, the stator winding may be wound on the stator core 120, and then the stator core 120 is sleeved on the stator bracket 110. Meanwhile, the magnetic shoes 230 are disposed on the inner side wall of the rotor housing 210, and then the rotor housing 210 is sleeved on the rotating shaft 220, thereby assembling the rotor assembly 200. The bearing 114 is then embedded in the bearing cavity 113 to complete the assembly of the bearing 114. The rotating shaft 220 is then passed through the two bearings 114, so that the rotor assembly 200 is rotatably disposed on the stator frame 110, thereby achieving split charging of the brushless motor. After the split charging of the brushless motor is completed, the connecting pin 130 and the rotary clamping groove 310 can be placed oppositely, then the connecting pin 130 passes through the first groove position 311, and then the brushless motor is rotated, so that the connecting portion 131 slides into the second groove position 312 under the guiding action of the guiding inlet 313, the limiting portion 132 slides onto the boss 350 under the action of the guiding portion 351 and is abutted against the boss 350, so that the connecting pin 130 is clamped and fixed in the rotary clamping groove 310, and the assembly of the brushless motor on the mounting frame 300 of the blower is completed.

Because the brushless motor that this application provided, it can be earlier to rotor subassembly 200 and stator subassembly 100 partial shipment, and the final assembly is to on the mounting bracket 300 of air-blower, therefore this application does not have the narrow and small restriction in space when assembling stator subassembly 100 and rotor subassembly 200, can ensure in the assembly process that the air gap between stator subassembly 100 and rotor subassembly 200 is even, ensures stator subassembly 100 and rotor subassembly 200 mounted position's accuracy promptly. Meanwhile, the utility model provides a have sufficient operating space when the partial shipment, only need carry out rotation fixed with brushless motor when the assembly, easy operation, convenient and fast has higher assembly efficiency.

Example two

The second embodiment of the present application provides a blower, and the blower includes a mounting frame 300 and any of the brushless motors provided herein, and the brushless motor is connected with the mounting frame 300.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (10)

1. A brushless motor for a blower, the blower further comprising a mounting bracket (300), the mounting bracket (300) being provided with a rotation clamping groove (310) along a circumferential direction, characterized in that the brushless motor comprises:

the stator assembly (100) comprises a stator bracket (110) and a stator core (120), wherein the stator core (120) is sleeved on the stator bracket (110), the stator bracket (110) is circumferentially provided with connecting pins (130), and the connecting pins (130) are in one-to-one correspondence with the rotating clamping grooves (310); and

a rotor assembly (200) rotatably disposed on the stator frame (110);

the rotary clamping groove (310) comprises a first groove position (311) and a second groove position (312) which are communicated with each other, and the connecting pin (130) penetrates through the first groove position (311) and is rotated into the second groove position (312) to be clamped and fixed in the rotary clamping groove (310).

2. The brushless motor according to claim 1, wherein the connection leg (130) includes a connection portion (131) and a limiting portion (132), the connection portion (131) is connected with the stator frame (110) and slidably disposed in the first slot (311) and the second slot (312), and the limiting portion (132) is disposed on a side of the connection portion (131) away from the stator frame (110) and is clamped and fixed with the mounting frame (300) at the second slot (312).

3. The brushless electric machine according to claim 2, characterized in that the mounting frame (300) is provided with a boss (350) at the second slot (312), the boss (350) protruding from a side wall of the mounting frame (300) and abutting against the limit portion (132) at the second slot (312).

4. A brushless electric machine according to claim 3, characterized in that the contact area of the boss (350) when abutting against the limit part (132) is smaller than the area of the limit part (132) projected on the side wall of the mounting frame (300).

5. A brushless motor according to claim 3, characterized in that the end of the boss (350) near the first slot (311) is provided with a guide portion (351), the height of the guide portion (351) gradually increasing in the direction of the first slot (311) near the second slot (312).

6. The brushless motor according to claim 1, wherein a guiding inlet (313) is provided at a communication position between the second slot (312) and the first slot (311), and the guiding inlet (313) is folded along a direction of the first slot (311) approaching the second slot (312).

7. The brushless motor of claim 1, wherein the rotor assembly (200) comprises a rotor housing (210), a rotating shaft (220) and magnetic shoes (230), the rotating shaft (220) is rotatably disposed on the stator support (110), the rotor housing (210) is sleeved on the rotating shaft (220) and connected with the rotating shaft (220), the stator assembly (100) is disposed in the rotor housing (210), and the magnetic shoes (230) are disposed on inner side walls of the rotor housing (210).

8. The brushless motor according to claim 7, characterized in that the direction of the first slot (311) towards the second slot (312) is the rotation direction of the spindle (220) when the brushless motor is in operation.

9. The brushless motor according to claim 7, characterized in that the stator support (110) is further provided with a bearing cavity (113), a bearing (114) is provided in the bearing cavity (113), and the bearing (114) is sleeved on the rotating shaft (220).

10. A blower comprising a mounting frame (300) and a brushless motor according to any one of claims 1 to 9, said brushless motor being connected to said mounting frame (300).

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