Integrated brushless suction motor for blower

Abstract

The utility model discloses an integrated brushless suction motor for a blower, which comprises a shell, a fan assembly, a stator assembly and a rotor assembly, the stator assembly is connected with the shell, the rotor assembly comprises an integrated rotor and a magnet, the integrated rotor comprises a rotating shaft and a rotating cylinder, and the rotating cylinder is connected with the stator assembly. The rotating shaft is sleeved with the rotating cylinder in a rotatable mode, the magnet is arranged on the rotating shaft in a sleeved mode and fixed through a balance ring, an installation cavity is formed in the shell, and the rotating cylinder is fixed in the installation cavity. The beneficial effects of the utility model are that through arranging the integrated rotor, installation is convenient, installation procedures are reduced, installation precision is improved, and the service life of the motor is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to an integrated brushless suction motor for a hair dryer. Background Technology

[0002] Most conventional brushless suction motors on the market use dual bearings, relying on the housing and bracket for positioning. This results in excessive positioning and overly complicated assembly, leading to numerous factors affecting motor lifespan and performance. Compared to conventional motors, integrated brushless suction motors offer advantages such as longer lifespan and higher efficiency. Conventional dual-bearing positioning structures, for example, require the housing and bracket to be doubly fixed to the bearings, significantly impacting concentricity and resulting in lower precision. Furthermore, the rotor must be balanced before the bearings are pressed in, making the process cumbersome, resulting in numerous parts and obstructed airflow.

[0003] For example, the invention patent with application number 2018106872647 discloses a brushless motor and a handheld power tool using the brushless motor. It sets a front bearing and a rear bearing to fix the rotating shaft, and then sets a front end cover and a rear end cover to fix the two bearings. The installation process is cumbersome, takes a long time, and has low precision. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an integrated brushless suction motor for hair dryers, which is easy to install, reduces installation steps, has high installation accuracy, and ensures smooth airflow.

[0005] Specifically, this utility model discloses an integrated brushless suction motor for a hair dryer, comprising: a housing, a fan assembly, a stator assembly, and a rotor assembly. The stator assembly is connected to the housing. The rotor assembly comprises: an integrated rotor and a magnet. The integrated rotor comprises a rotating shaft and a rotating cylinder. The rotating cylinder is rotatably mounted on the rotating shaft. The magnet is mounted on the rotating shaft. A balance ring is provided on the upper side of the magnet. An installation cavity is provided inside the housing, and the rotating cylinder is fixed inside the installation cavity.

[0006] The advantages of adopting the above technical solution are that by setting an integrated rotor, it is easy to install, reduces installation steps, improves installation accuracy, and extends the service life of the motor.

[0007] Furthermore, the stator assembly includes a stator core and a stator support, the stator support being used to fix the stator core, the stator core being connected to the housing, and a stator winding being wound on the stator core.

[0008] The advantage of adopting the above technical solution is that the stator assembly can be assembled without interference, provided that the height of the stator core positioning surface on the housing is not raised, or that the stator core and the magnet are not misaligned.

[0009] Furthermore, the stator support is provided with multiple plug-in terminals, each plug-in terminal having a wire fixing part and a plug-in plate. The leads on the stator winding are fixed in the wire fixing part, and the plug-in plate is connected to a circuit board.

[0010] The advantages of adopting the above technical solution are that the plug-in terminals connect the winding leads and the circuit board, making the connection convenient, reducing wire soldering, ensuring circuit safety and stability, and improving installation efficiency.

[0011] Furthermore, a rear cover plate is provided on the upper side of the circuit board, and the rear cover plate is connected to the stator bracket.

[0012] The advantage of adopting the above technical solution is that the back cover provides protection, preventing the circuit board from being hit by other parts or from accumulating dust, which could lead to short circuits.

[0013] Furthermore, the rotating cylinder is provided with bearings arranged symmetrically at the top and bottom. The inner ring of the bearing is interference-fitted with the rotating shaft, and the outer ring of the bearing is interference-fitted with the rotating cylinder.

[0014] The advantages of adopting the above technical solution are that the symmetrically arranged bearings are better able to bear force, the rotating cylinder is subjected to uniform force during rotation, the entire shaft is free from radial wobble, installation is convenient, and the service life of the motor is extended.

[0015] Furthermore, the fan assembly includes: a fixed impeller, a moving impeller, and a fan shroud. The fixed impeller is fixedly connected to the housing, the moving impeller is located below the fixed impeller and connected to the rotating shaft, and the fan shroud is connected to the housing.

[0016] The advantage of adopting the above technical solution is that the fan assembly is used for blowing air, the moving impeller rotates under the drive of the rotating shaft, and the generated air is discharged through the fixed impeller and the fan cover to realize the blowing function.

[0017] Furthermore, the hood is provided with an air inlet, and a sealing ring is provided on the inner side of the hood.

[0018] The advantage of adopting the above technical solution is that the sealing ring prevents gas from entering through gaps, reduces turbulence, and lowers noise.

[0019] Furthermore, the housing is provided with multiple guide vanes and a mounting bracket, and the guide vanes are evenly distributed along the inner surface of the housing.

[0020] The advantage of adopting the above technical solution is that the guide vanes play a guiding role, and the airflow channels formed between the vanes realize the airflow guiding function.

[0021] Furthermore, the impeller includes a base plate, an upper plate, and blades disposed between the base plate and the upper plate. The blades are arc-shaped, the diameter of the upper plate is smaller than that of the base plate, and the base plate has an opening communicating with the air inlet.

[0022] The advantage of adopting the above technical solution is that, due to the small diameter of the upper plate, the air generated by the rotation of the impeller blows out from the edge of the upper plate, and the opening on the bottom plate connects with the air inlet. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0024] Figure 1 This is a front cross-sectional view of the integrated brushless suction motor for a hair dryer, according to this utility model.

[0025] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0026] Figure 3 This is an exploded view of the utility model.

[0027] Figure 4 This is a schematic diagram of the rotor assembly structure of this utility model.

[0028] Figure 5 This is a schematic diagram of the stator support structure of this utility model.

[0029] Figure 6 This is a schematic diagram of the plug-in board structure of this utility model.

[0030] Figure 7 This is a schematic diagram of the moving impeller structure of this utility model.

[0031] Figure 8 This is a schematic diagram of the outer shell structure of this utility model.

[0032] The reference numerals used in the attached figures are as follows:

[0033] Housing 1; Mounting cavity 11; Guide vane 12; Mounting bracket 13; Fan assembly 2; Stator impeller 21; Moving impeller 22; Base plate 221; Top plate 222; Fan shroud 23; Air inlet 24; Stator assembly 3; Stator core 31; Stator bracket 32; Integrated rotor 4; Shaft 41; Rotating cylinder 42; Bearing 43; Magnet 5; Balance ring 51; Plug-in terminal 6; Wire fixing part 61; Plug-in plate 62; Circuit board 63; Rear cover plate 64; Puncture part 65; Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings.

[0035] like Figure 1-8 As shown, this utility model discloses an integrated brushless suction motor for a hair dryer, including: a housing 1, a fan assembly 2, a stator assembly 3, and a rotor assembly. The stator assembly 3 is connected to the housing 1. The rotor assembly includes: an integrated rotor 4 and a magnet 5. The integrated rotor 4 includes a rotating shaft 41 and a rotating cylinder 42. The rotating cylinder 42 is rotatably sleeved on the rotating shaft 41. The magnet 5 is sleeved on the rotating shaft 41. A balance ring 51 is provided on the upper side of the magnet 5. The balance ring 51 is interference-fitted with the rotating shaft 41. The inner hole of the magnet 5 is glued to the rotating shaft 41 for fixation. An installation cavity 11 is provided inside the housing 1, and the rotating cylinder 42 is fixed in the installation cavity 11.

[0036] The advantages of adopting the above technical solution are that by setting an integrated rotor 4, installation is convenient, installation steps are reduced, installation accuracy is improved, and the service life of the motor is extended.

[0037] In some implementations, the stator assembly 3 includes a stator core 31 and a stator bracket 32. The stator bracket 32 ​​is used to fix the stator core 31. The stator bracket 32 ​​is divided into an upper bracket and a lower bracket to clamp and fix the stator core 31. Multiple mounting channels are provided on the outside of the stator core 31. The stator core 31 is fixed to the housing 1 by long screws. Stator windings are wound on the stator core 31, and each set of stator windings has an extension lead wire.

[0038] In some implementations, the stator support 32 is provided with multiple plug-in terminals 6, the number of which is the same as the number of stator windings. Each plug-in terminal 6 is provided with a wire fixing part 61 and a plug-in plate 62. The wire fixing part is integrally formed with the stator support 63. The leads on the stator windings are fixed in the wire fixing part 61. The plug-in plate 62 is provided with a piercing part 65 for piercing the paint layer on the leads. The plug-in plate 62 is inserted into the fixing part and locked in place. The upper end of the plug-in plate 62 is connected to the circuit board 63 by welding. The leads are connected by plugging, which reduces welding, ensures circuit safety and stability, and improves installation efficiency.

[0039] Furthermore, a rear cover plate 64 is provided on the upper side of the circuit board 63. The rear cover plate 64 is fixed to the stator bracket 32 ​​by screws, and the rear cover plate 64 is provided with a through hole for the wire to pass through.

[0040] The advantage of adopting the above technical solution is that the rear cover 64 plays a protective role, preventing the circuit board 63 from being short-circuited due to collisions with other parts or the accumulation of dust.

[0041] In some implementations, the rotating cylinder 42 is provided with bearings 43 arranged symmetrically at the top and bottom. The inner ring of the bearing 43 is interference-fitted with the rotating shaft 41, and the outer ring of the bearing 43 is interference-fitted with the rotating cylinder 42. When the rotating shaft 41 rotates, the rotating cylinder 42 does not rotate with the rotating shaft. During installation, glue can be applied to the mounting cavity 11 to fix the rotating cylinder 42 to the mounting cavity 11.

[0042] The advantages of adopting the above technical solution are that the symmetrically arranged bearings 43 are better able to bear force, making the rotating cylinder 42 rotate with uniform force, and the entire rotating shaft 41 has no radial wobble, which facilitates installation and extends the service life of the motor.

[0043] Furthermore, the fan assembly 2 includes: a fixed impeller 21, a moving impeller 22, and a fan shroud 23. The fixed impeller 21 is fixedly connected to the housing 1, the moving impeller 22 is located below the fixed impeller 21 and connected to the rotating shaft 41, and the fan shroud 23 is connected to the housing 1. The connection method can be a threaded connection, etc. The fixed impeller 21 includes a main body, and multiple fixed blades are provided on the outer edge of the main body. The fixed blades form an inclined air guide channel to realize the air guide function. The moving impeller 22 includes a base plate 221, an upper plate 222, and blades disposed between the base plate 221 and the upper plate 222. The blades are arc-shaped and arranged along the vertical direction. The diameter of the upper plate 222 is smaller than that of the base plate 221. The base plate 221 is provided with an opening communicating with the air inlet 24. The air generated by the rotation of the blades is blown out from the edge of the upper plate 222, enters the fixed blades, and then blows out.

[0044] The advantage of adopting the above technical solution is that the fan assembly 2 is used for blowing air, the moving impeller 22 rotates under the drive of the rotating shaft 41, and the generated air is discharged through the fixed impeller 21 and the fan cover 23 to realize the blowing function.

[0045] Furthermore, the fan shroud 23 is provided with an air inlet 24, and a sealing ring is provided inside the air inlet 24. The fan shroud 23 is provided with a mounting groove for installing the sealing ring, and the sealing ring is installed in the mounting groove between the impeller 22 and the fan shroud 23. The sealing ring prevents gas from entering through gaps, reduces turbulence, and lowers noise.

[0046] In some implementations, a plurality of guide vanes 12 are provided inside the housing 1, and a mounting bracket 13 is provided inside the housing 1. The guide vanes 12 are evenly distributed along the inner surface of the housing 1. The mounting bracket 13 and the guide vanes 12 are integrally formed with the housing 1, reducing the number of installation steps.

[0047] The advantage of adopting the above technical solution is that the guide vanes 12 play a guiding role, and the flow channel is formed between the vanes to realize the air guiding function.

[0048] During installation, magnet 5 is inserted into the integrated rotor 4, with a retaining ring between magnet 5 and rotating cylinder 42 for isolation. Balance ring 51 is pressed in, and the integrated rotor 4 is fixed to the mounting cavity 11 in the housing 1 with adhesive. Stator assembly 3 is fixed to housing 1 with screws. Fan assembly 2 is assembled using the same method as conventional dual-bearing brushless suction motors. The circuit board is positioned by the boss on stator bracket 32 ​​in stator assembly 3, and plug-in plate 62 is soldered to circuit board 63 pads. Rear cover plate 64 presses the circuit board and is fixed to stator bracket 32 ​​with screws, completing the entire motor installation. This reduces the need for pressing and positioning bearing 43, resulting in better rotor assembly concentricity and higher precision. This extends the service life of the brushless suction motor. It also reduces the need for separate balancing of the rotor assembly, allowing for integrated laser balancing of the entire machine, improving assembly efficiency. Furthermore, fewer parts reduce costs, fewer processes, smoother airflow, and better noise and performance.

[0049] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. An integrated brushless suction motor for a hair dryer, characterized in that, include: The assembly comprises a housing (1), a fan assembly (2), a stator assembly (3), and a rotor assembly. The stator assembly (3) is connected to the housing (1). The rotor assembly includes an integral rotor (4) and a magnet (5). The integral rotor (4) includes a shaft (41) and a rotating cylinder (42). The rotating cylinder (42) is rotatably mounted on the shaft (41). The magnet (5) is mounted on the shaft (41). A balance ring (51) is provided on the upper side of the magnet (5). An installation cavity (11) is provided inside the housing (1). The rotating cylinder (42) is fixed inside the installation cavity (11).

2. The integrated brushless suction motor for a hair dryer according to claim 1, characterized in that, The stator assembly (3) includes a stator core (31) and a stator bracket (32). The stator core (31) is used to fix the stator core (31). The stator bracket (32) is connected to the housing (1). The stator core (31) is wound with stator windings.

3. The integrated brushless suction motor for a hair dryer according to claim 2, characterized in that, The stator support (32) is provided with a plurality of plug-in terminals (6), each plug-in terminal (6) is provided with a wire fixing part (61) and a plug-in plate (62), the lead wires on the stator winding are fixed in the wire fixing part (61), and the plug-in plate (62) is connected to a circuit board (63).

4. The integrated brushless suction motor for a hair dryer according to claim 3, characterized in that, A rear cover plate (64) is provided on the upper side of the circuit board (63), and the rear cover plate (64) is connected to the stator bracket (32).

5. The integrated brushless suction motor for a hair dryer according to claim 1, characterized in that, The rotating cylinder (42) is provided with bearings (43) arranged symmetrically on the upper and lower sides. The inner ring of the bearing (43) is interference-fitted with the rotating shaft (41), and the outer ring of the bearing (43) is interference-fitted with the rotating cylinder (42).

6. The integrated brushless suction motor for a hair dryer according to claim 1, characterized in that, The fan assembly (2) includes: a fixed impeller (21), a moving impeller (22) and a fan shroud (23). The fixed impeller (21) is fixedly connected to the housing (1). The moving impeller (22) is located below the fixed impeller (21) and connected to the rotating shaft (41). The fan shroud (23) is connected to the housing (1).

7. The integrated brushless suction motor for a hair dryer according to claim 6, characterized in that, The hood (23) is provided with an air inlet (24), and a sealing ring is provided on the inner side of the hood (23).

8. The integrated brushless suction motor for a hair dryer according to claim 7, characterized in that, The housing (1) is provided with a plurality of guide vanes (12) and a mounting bracket (13) is provided inside the housing (1). The guide vanes (12) are evenly distributed along the inner surface of the housing (1).

9. The integrated brushless suction motor for a hair dryer according to claim 7, characterized in that, The impeller (22) includes a base plate (221), an upper plate (222) and blades disposed between the base plate (221) and the upper plate (222). The blades are arc-shaped. The diameter of the upper plate (222) is smaller than that of the base plate (221). The base plate (221) is provided with an opening communicating with the air inlet (24).

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