CN212258684U - Novel brushless motor with centrifugal impeller - Google Patents

Abstract

The utility model relates to a technical field is simplified to the motor, discloses a take centrifugal impeller's novel brushless motor, include: stator module and rotor subassembly, stator module includes wire winding stator, with the base of installation wire winding stator and be located the ball bearing of base, the wave form packing ring is equipped with in one side that the base is close to the circuit board, the rotor subassembly include with ball bearing inner race complex pivot, the one end fixedly connected with axle sleeve of pivot, the outside cover of axle sleeve is equipped with centrifugal impeller, be equipped with the slotted hole that is used for making things convenient for the ventilation on the centrifugal impeller, be equipped with the casing in the centrifugal impeller, there is the magnetite in the casing, wire winding stator is in the inside of magnetite, it separates to have the air gap with the magnetite, the one end of base is equipped with and is used. Brushless motor and centrifugal impeller integrated design have reduced brushless motor and centrifugal impeller's subassembly size, have improved the radiating effect of motor, and then have improved brushless motor's energy conversion efficiency.

Description

A new type of brushless motor with centrifugal impeller

technical field

The utility model relates to the technical field of motor simplification, in particular to a novel brushless motor with a centrifugal impeller.

Background technique

The brushless motor has the advantages of long life, low energy consumption, low noise, and small size of the motor with the same power. However, because the motor and the impeller are generally designed separately, the axial size of the motor and the impeller assembly is large, and the two parts of the motor and the impeller have opposite structures. Independence is not conducive to the overall heat dissipation of the motor, and cannot effectively integrate the structure of the motor and the impeller.

Therefore, how to simplify the motor structure and improve the energy conversion rate of the motor has become an urgent technical problem to be solved.

Utility model content

The technical problem to be solved by the utility model is how to simplify the motor structure and improve the energy conversion rate of the motor.

To this end, according to the first aspect, an embodiment of the present utility model discloses a novel brushless motor with a centrifugal impeller, which includes: a stator assembly and a rotor assembly, the stator assembly including a winding stator, and installing the winding stator The base and the ball bearing located in the wound stator, the rotor assembly includes a rotating shaft sleeved with the ball bearing, the rotating shaft is sleeved with a wave washer located at one end of the ball bearing, and the rotating shaft is sleeved with a wave washer. One end is fixedly connected with a shaft sleeve, the outer side of the shaft sleeve is sleeved with a centrifugal impeller, the centrifugal impeller is provided with a slot hole for convenient ventilation, the centrifugal impeller is provided with a casing, and the casing is used for For the magnet wrapping the winding stator, one end of the base is provided with a control board for controlling the rotation of the rotating shaft, and the control board is detachably connected to the base.

Optionally, one end of the rotating shaft is provided with an accommodating groove, and a retaining spring for preventing the ball bearing from falling off is provided in the accommodating groove.

Optionally, the centrifugal impeller is provided with an upper balance position and a lower balance position that are both used for dynamic balance correction of the centrifugal impeller, and both the upper balance position and the lower balance position are connected to the The centrifugal impeller.

Optionally, a spacer located at one end of the shaft sleeve close to the ball bearing is sleeved on the rotating shaft.

Optionally, the base is provided with a wire post for winding the wire end of the wire wound stator.

Optionally, the control board is provided with a wire pass hole for passing the wire head on the wire post, and the control board is provided with a wire pass hole on one side of the wire pass hole and used to pass the wire. Wire end welding on the post locates the welding hole.

Optionally, the base is provided with a fixing hole for fixing the brushless motor.

Optionally, a positioning boss is provided on the base, and a screw for fastening the control board to the base is threaded on the positioning boss.

The utility model has the following beneficial effects: the integrated design of the brushless motor and the centrifugal impeller reduces the component size of the brushless motor and the centrifugal impeller, improves the heat dissipation effect of the motor, and further improves the energy conversion efficiency of the brushless motor.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the following descriptions The accompanying drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

1 is a schematic three-dimensional structure diagram of a novel brushless motor with a centrifugal impeller disclosed in this embodiment;

FIG. 2 is a schematic diagram of an explosion structure of a novel brushless motor with a centrifugal impeller disclosed in the present embodiment;

3 is a schematic structural diagram of a centrifugal impeller in a novel brushless motor with a centrifugal impeller disclosed in this embodiment;

4 is a schematic structural diagram of a base in a novel brushless motor with a centrifugal impeller disclosed in this embodiment;

5 is a schematic structural diagram of a control board in a novel brushless motor with a centrifugal impeller disclosed in this embodiment;

6 is a schematic cross-sectional view of a rotor assembly in a novel brushless motor with a centrifugal impeller disclosed in this embodiment;

FIG. 7 is a circuit block diagram of a control board in a novel brushless motor with a centrifugal impeller disclosed in this embodiment.

Reference numerals: 1, stator assembly; 11, wound stator; 12, base; 121, wire post; 122, fixing hole; 123, positioning boss; 13, ball bearing; 14, wave washer; 2, rotor assembly; 21, rotating shaft; 211, accommodating groove; 22, shaft sleeve; 23, centrifugal impeller; 231, slot hole; 232, upper balance position; 233, lower balance position; 234, contact ring; 24, casing; 25, magnet; 26, circlip; 27, gasket; 3, control board; 31, wire hole; 32, welding hole; 4, screw.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, with a specific orientation. Therefore, it should not be construed as a limitation on the present invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Dismantling connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal connection of two components, which can be wireless connection or Wired connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as there is no conflict with each other.

The embodiment of the present utility model discloses a novel brushless motor with a centrifugal impeller, as shown in FIG. 1 and FIG. 2 , comprising: a stator assembly 1 and a rotor assembly 2 , the stator assembly 1 includes a winding stator 11 , and an installation winding The base 12 of the stator 11 and the ball bearing 13 located in the wound stator 11. The rotor assembly 2 includes a rotating shaft 21 sleeved with the ball bearing 13. The rotating shaft 21 is sleeved with a wave washer 14 at one end of the ball bearing 13. One end is fixedly connected with a shaft sleeve 22, the outer side of the shaft sleeve 22 is sleeved with a centrifugal impeller 23, the centrifugal impeller 23 is provided with a slot 231 for convenient ventilation, the centrifugal impeller 23 is provided with a casing 24, and the casing 24 is used for The magnet 25 of the wound stator 11 is wrapped, and one end of the base 12 is provided with a control board 3 for controlling the rotation of the rotating shaft 21 , and the control board 3 is detachably connected to the base 12 .

It should be noted that the integrated design of the brushless motor and the centrifugal impeller 23 reduces the assembly size of the brushless motor and the centrifugal impeller 23 , improves the heat dissipation effect of the motor, and further improves the energy conversion efficiency of the brushless motor.

As shown in FIG. 2 , one end of the rotating shaft 21 is provided with an accommodating groove 211 , and a retaining spring 26 for preventing the ball bearing 13 from falling off is provided in the accommodating groove 211 .

As shown in FIG. 2 and FIG. 3 , the centrifugal impeller 23 is provided with an upper balance position 232 and a lower balance position 233 which are both used for dynamic balance correction of the centrifugal impeller 23 , and the upper balance position 232 and the lower balance position 233 pass through the connecting ring. 234 is connected to the centrifugal impeller 23 .

As shown in FIG. 2 and FIG. 6 , the rotating shaft 21 is sleeved with a washer 27 located at one end of the shaft sleeve 22 close to the ball bearing 13 .

As shown in FIGS. 2 and 4 , the base 12 is provided with a wire post 121 for winding the wire ends of the winding stator 11 . In the specific implementation process, the line posts 121 are set to three.

As shown in FIG. 2 and FIG. 5 , the control board 3 is provided with a wire passage hole 31 for passing the wire ends on the wire post 121 , and the control board 3 is provided with a wire passage hole 31 on the side of the wire The wire ends on the post 121 are welded to locate the welding holes 32 . In a specific implementation process, the number of welding holes 32 is three.

As shown in FIG. 2 and FIG. 4 , the base 12 is provided with a fixing hole 122 for fixing the brushless motor. In a specific implementation process, the number of the fixing holes 122 is three.

As shown in FIG. 2 and FIG. 4 , the base 12 is provided with a positioning boss 123 , and the positioning boss 123 is screwed with screws 4 for fastening the control board 3 to the base 12 . In the specific implementation process, there are three positioning bosses 123 .

As shown in Figure 2 and Figure 7, the control board 3 is provided with a control circuit, the control circuit part includes a filter, a DC step-down device, a control chip, an inverter circuit and a feedback signal of the motor, and the speed regulation signal control is provided through an external circuit Motor speed, you can choose to output the motor speed signal according to your needs.

A novel brushless motor with a centrifugal impeller disclosed in the present application, and its installation process is as follows:

a. Put the rotating shaft 21 and the casing 24 pressed into the shaft sleeve 22 into the mold of the injection molding machine, and after injection molding, a centrifugal impeller 23 with a fan blade is produced. The magnet 25 is installed in the casing 24 . The washer 27 is installed on the rotating shaft 21, and the main components of the rotor assembly 2 are now assembled.

b. The stator assembly 1 includes a wound stator 11 , a base 12 , a ball bearing 13 and the like. The wound stator 11 is installed into the base 12 , and the installation direction is positioned by the flat position on the base 12 . The three wire ends of the winding stator 11 are wound on the corresponding wire posts 121 respectively. Install the ball bearing 13 and the wave washer 14 into the bearing chamber of the base 12 correspondingly to complete the assembly of the stator assembly 1 .

c. Install the rotor assembly 2 into the stator assembly 1 , and install the retaining spring 26 into the accommodating groove 211 of the rotating shaft 21 .

d. Fix the control board 3 on the base 12 through three self-tapping screws 4, and the three coiled wire posts 121 of the base 12 pass through the wire holes 31 of the control board 3, and weld the enameled wire on the corresponding control board. on the pads of board 3.

Working principle: The integrated design of the brushless motor and the centrifugal impeller 23 reduces the component size of the brushless motor and the centrifugal impeller 23, improves the heat dissipation effect of the motor, and further improves the energy conversion efficiency of the brushless motor.

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (8)

1. A novel brushless motor with a centrifugal impeller, characterized in that it comprises: a stator assembly (1) and a rotor assembly (2), the stator assembly (1) comprising a wound stator (11), a A base (12) of a wound stator (11) and a ball bearing (13) located in the base (12), the rotor assembly (2) includes a rotating shaft (21) sleeved with the ball bearing (13) A wave washer (14) located at one end of the ball bearing (13) is sleeved on the rotating shaft (21), and a shaft sleeve (22) is fixedly connected to one end of the rotating shaft (21). ) is provided with a centrifugal impeller (23) on the outer side, the centrifugal impeller (23) is provided with a slot (231) for convenient ventilation, and the centrifugal impeller (23) is provided with a casing (24), the a magnet (25) in the casing (24) for wrapping the winding stator (11), one end of the base (12) is provided with a control board (3) for controlling the rotation of the rotor assembly (2), The control board (3) is detachably connected to the base (12). 2 . The novel brushless motor with centrifugal impeller according to claim 1 , wherein an accommodation groove ( 211 ) is provided at one end of the rotating shaft ( 21 ), and a accommodating groove ( 211 ) is provided in the accommodation groove ( 211 ) for preventing the The retaining spring (26) from which the ball bearing (13) falls off. 3 . The novel brushless motor with centrifugal impeller according to claim 1 , wherein the centrifugal impeller ( 23 ) is provided with upper balances that are both used for dynamic balance correction of the centrifugal impeller ( 23 ). 4 . Position (232) and lower balance position (233), the upper balance position (232) and the lower balance position (233) are both connected to the centrifugal impeller (23) through a connecting ring (234). 4 . The novel brushless motor with centrifugal impeller according to claim 1 , characterized in that, the rotating shaft ( 21 ) is sleeved with a shaft sleeve ( 22 ) that is located at one end of the shaft sleeve ( 22 ) close to the ball bearing ( 13 ). 5 . Gasket (27). 5 . The novel brushless motor with centrifugal impeller according to claim 1 , wherein the base ( 12 ) is provided with a wire post ( 121 ) for winding the wire ends of the wire wound stator ( 11 ). 6 . . 6 . The novel brushless motor with centrifugal impeller according to claim 5 , wherein the control board ( 3 ) is provided with a wire thread for threading the thread ends on the wire post ( 121 ). 7 . A hole (31), the control board (3) is provided with a welding hole (32) located on one side of the wire passage hole (31) and used for welding and positioning the wire head on the wire post (121). 7 . The novel brushless motor with centrifugal impeller according to claim 1 , wherein the base ( 12 ) is provided with a fixing hole ( 122 ) for fixing the brushless motor. 8 . 8 . The novel brushless motor with centrifugal impeller according to claim 1 , wherein a positioning boss ( 123 ) is provided on the base ( 12 ), and the positioning boss ( 123 ) is threadedly connected. 9 . The screws (4) used to fasten the control board (3) to the base (12).

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