CN219067983U

CN219067983U - Motor

Info

Publication number: CN219067983U
Application number: CN202223292387.1U
Authority: CN
Inventors: 刘冰融
Original assignee: Suzhou Yongjie Motor Co ltd
Current assignee: Suzhou Yongjie Motor Co ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-05-23
Anticipated expiration: 2032-12-08

Abstract

The utility model relates to a motor, comprising a stator assembly, a motor and a motor, wherein the stator assembly comprises a stator and a rear end bracket; the rotating piece comprises a rotor, a movable impeller and a connecting piece unit, wherein the rotor is axially arranged along the motor, and the movable impeller is connected with the rotor through the connecting piece unit; the shell, it includes follows fan housing and the casing that the motor axial set up, be equipped with stator impeller unit in the casing, stator impeller unit with distance between the casing inner wall is less than 0.5mm, the one end of fan housing is equipped with the air intake, the other end with the casing links to each other, the casing with have the air outlet between the stator, the casing links to each other with the rear end support, rear end support middle part is equipped with holds the first through-hole of rotor, be equipped with first strengthening rib unit along radial on the rear end support. The motor is suitable for random suction, reduces the noise, simultaneously reduces the volume of the motor, and effectively reduces the motor loss caused by turbulent flow of an air duct.

Description

Motor

Technical Field

The utility model relates to the technical field of motors, in particular to a motor.

Background

The portable vacuum cleaner is a common portable vacuum cleaner, can facilitate a user to clean pollutants such as dust at some tiny positions, and is more and more accepted and used by people. Most of the portable internal motors in the current market are direct current brushless motors with the outer diameter of 45 mm.

Generally, if the design of the appearance is pursued, the noise index of the portable suction is sacrificed due to the limitation and influence of the volume of the motor, and if the noise problem of the portable suction is considered, the volume and the size of the portable suction are correspondingly increased by using the silencing cotton with higher thickness. The volume and noise of the portable suction are important indexes to be considered, and the existing portable suction motor cannot meet the requirement of reducing noise simultaneously under the condition of volume reduction.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defects in the prior art, and provide the motor which can be suitable for random suction, reduce the noise, reduce the volume of the motor, and effectively reduce the motor loss caused by turbulent flow of an air duct.

In order to solve the technical problems, the utility model provides a motor, which comprises,

a stator assembly including a stator and a rear end bracket;

the rotating piece comprises a rotor, a movable impeller and a connecting piece unit, wherein the rotor is axially arranged along the motor, and the movable impeller is connected with the rotor through the connecting piece unit;

the shell comprises a fan cover and a shell which are axially arranged along the motor, a fixed impeller unit is arranged in the shell, the distance between the fixed impeller unit and the inner wall of the shell is smaller than 0.5mm, one end of the fan cover is provided with an air inlet, the other end of the fan cover is connected with the shell, an air outlet is arranged between the shell and the stator, the shell is connected with a rear end bracket, a first through hole for accommodating the rotor is formed in the middle of the rear end bracket, and a first reinforcing rib unit is arranged on the rear end bracket along the radial direction;

and the controller unit is connected with the stator.

Preferably, the stator vane unit comprises a plurality of uniformly arranged air guide plates, and an included angle formed by the plane where the air guide plates are positioned and the plane where the cross section of the rotor is positioned is alpha, wherein alpha is more than or equal to 15 degrees and less than or equal to 30 degrees.

Preferably, the first reinforcing rib unit comprises three groups of uniformly arranged reinforcing ribs, and the angle between each adjacent group of reinforcing ribs is 120 DEG

Preferably, the rear end bracket is provided with a threaded hole, and the rear end bracket is connected with the casing through a first screw unit.

Preferably, the casing is provided with a second reinforcing rib unit along a radial direction, and the second reinforcing rib unit comprises a plurality of uniformly arranged reinforcing ribs.

Preferably, the device further comprises a positioning cover, the controller unit is arranged between the positioning cover and the rear end support, the rear end support is connected with the positioning cover through a second screw unit, a second through hole for the second screw unit to pass through is formed in the controller unit, and the second screw unit passes through the second through hole.

Preferably, the second through holes are concavely formed along the outer wall of the controller unit, and the second through holes are uniformly provided with three through holes along the circumferential direction of the controller unit.

Preferably, the connector unit comprises a bushing, a pressing ring and a nut, wherein the nut, the pressing ring, the movable impeller and the bushing are sleeved on the rotor in sequence along the air inlet direction, and the movable impeller is positioned in the fan housing.

Preferably, the stator assembly further comprises a wiring terminal, the wiring terminal is mounted on the stator, a soldering tin hole is formed in the controller unit, and the wiring terminal is connected with the controller unit through the soldering tin hole.

Preferably, the upper unit of the controller is provided with a wiring port, and the wiring port is connected with a power line.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

the motor is provided with the stator assembly, the rotating piece, the shell and the controller unit, wherein the reinforcing ribs are arranged on the shell, so that the strength of the motor is improved, the flow passage area can be increased, the distance between the fixed impeller unit in the shell and the shell is smaller than 0.5mm, when the motor works, the energy loss caused by turbulent flow of an air duct can be reduced, the air inlet quantity is effectively improved, the running efficiency of the motor is ensured, the size of the motor is effectively reduced, the size of the motor is reduced to be within 3.5mm of the maximum outer diameter, and compared with the size of the motor used in the conventional random suction, the size of the motor is further reduced, and the noise can be effectively reduced.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which

Fig. 1 is an exploded view of a perspective structure of a preferred embodiment of the present utility model.

Fig. 2 is a cross-sectional view of a preferred embodiment of the present utility model.

Fig. 3 is a schematic perspective view of a preferred embodiment of the present utility model.

Fig. 4 is a partial structural view of a rear end bracket according to a preferred embodiment of the present utility model.

Fig. 5 is a partial structural schematic view of a stator according to a preferred embodiment of the present utility model.

Fig. 6 is a schematic structural view of a first view of a casing according to a preferred embodiment of the present utility model.

Fig. 7 is a schematic structural view of a second view of the casing according to the preferred embodiment of the present utility model.

Fig. 8 is a partial structural schematic view of a stator impeller according to a preferred embodiment of the present utility model.

Fig. 9 is a partial structural schematic diagram of a controller unit according to a preferred embodiment of the present utility model.

Fig. 10 is a partial structural view of the positioning cover according to the preferred embodiment of the present utility model.

Description of the specification reference numerals: 1. a stator; 11. a connection terminal; 2. a rear end bracket; 21. a first reinforcing rib; 22. a second reinforcing rib; 23. a third reinforcing rib; 24. a first screw unit; 25. a second screw unit, 3, a rotor; 31. a bushing; 32. a pressing ring; 33. a nut; 4. a moving impeller; 5. a fan housing; 6. a housing; 7. a stator wheel unit; 71. an air guiding sheet; 8. a controller unit; 81. a second through hole; 82. a solder hole; 83. a power line; 9. and positioning the cover.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

Examples

Referring to fig. 1 to 10, the present utility model discloses a motor, comprising,

a stator assembly comprising a stator 1;

the rotating piece comprises a rotor 3, a movable impeller 4 and a connecting piece unit, wherein the rotor 3 is axially arranged along the motor, and the movable impeller 4 is connected with the rotor 3 through the connecting piece unit;

the motor comprises a shell, and comprises a fan housing 5 and a shell 6 which are axially arranged along the motor, wherein a fixed impeller unit 7 is arranged in the shell 6, the fixed impeller unit 7 and the shell 6 are mutually independent, the distance between the fixed impeller unit 7 and the inner wall of the shell 6 is smaller than 0.5mm, one end of the fan housing 5 is provided with an air inlet 51, the other end of the fan housing is connected with the shell 6, an air outlet is arranged between the shell 6 and the stator 1, the shell 6 is connected with a rear end bracket 2, a first through hole for accommodating the rotor 3 is formed in the middle of the rear end bracket 2, and a first reinforcing rib unit is radially arranged on the rear end bracket 2, so that the motor is provided with a plurality of air inlets;

a controller unit 8 connected to the stator 1.

It can be known that the motor to be protected is provided with the stator assembly, the rotating piece, the shell and the controller unit, wherein the reinforcing ribs are arranged on the shell, so that the strength of the motor is improved, the flow passage area can be increased, the distance between the fixed impeller unit in the shell and the shell is smaller than 0.5mm, when the motor works, the energy loss caused by turbulent flow of an air duct can be reduced, the air inlet quantity is effectively improved, the running efficiency of the motor is ensured, the size of the motor is effectively reduced to be within 3.5mm of the maximum outer diameter, and compared with the size of the motor used in the conventional hand suction, the size and the size of the motor are further reduced, and the noise can be effectively reduced.

Further, the stator vane unit 7 includes a plurality of evenly arranged air guiding blades 71, an included angle formed by an angle alpha between a plane where the air guiding blades 71 are located and a plane where a cross section of the rotor 3 is located is 15 degrees or more and is less than or equal to 30 degrees, and the number of the air guiding blades 71 is n, and is 8 degrees or more and less than or equal to 15 degrees. In this embodiment, the air guiding plate 71 is provided with 9 plates, so that the motor can have both low noise and high performance, and has a high vacuum degree.

Furthermore, the first reinforcing rib unit comprises three groups of uniformly arranged reinforcing ribs, and specifically comprises a first reinforcing rib 21, a second reinforcing rib 22 and a third reinforcing rib 23, wherein the angle between two adjacent groups of reinforcing ribs is 120 degrees, so that the stability and the strength of the rear end bracket 2 can be enhanced.

In detail, the rear end bracket 2 is provided with a threaded hole, each reinforcing rib is provided with a threaded hole unit, and the rear end bracket 2 is connected with the casing 6 through a first screw unit 24.

In detail, the housing 6 is provided with a second reinforcing rib unit along a radial direction, the rotor 3 is arranged along an axial direction of the housing 6, and the second reinforcing rib unit comprises a plurality of reinforcing ribs 61 uniformly arranged along the radial direction of the housing.

The stator 1 is installed on the casing 6 by three fastening screws, and the rear end bracket 2 is installed on the casing by the first screw unit 24, so that the high precision requirement on injection molding and assembly manufacturing processes caused by mutual fixation of various parts is avoided, resources can be effectively saved, and the installation can be realized by the arrangement mode while the cost can be saved.

Further, the device further comprises a positioning cover 9, the controller unit 8 is arranged between the positioning cover 9 and the rear end bracket 2, the rear end bracket 2 is connected with the positioning cover 9 through a second screw unit 25, a second through hole 81 for the second screw unit 25 to pass through is formed in the controller unit 8, and the second screw unit 25 passes through the second through hole 81.

It should be noted that the second through holes 81 are formed concavely along the outer wall of the controller unit 8, and the second through holes 81 are uniformly provided with three in the circumferential direction of the controller unit.

In traditional design, the positioning cover is overlapped with the controller and is locked with the rear end bracket through the screw, and the defect of the mode is that the controller is possibly stressed when the screw is locked, so that a circuit and components on the controller are damaged due to stress, abnormality is generated, and the bearing chamber is possibly deformed due to overlarge torsion when the screw is locked, so that the motor is poor in vibration abnormal sound and the like. And adopt current design, the second through-hole 81 that is used for second screw unit 25 to pass through has been seted up on the controller unit 8 to can avoid the controller unit effectively to receive external force influence at the assembly process, can avoid controller unit 8 to take place to damage, guaranteed the quality of controller unit 8, thereby can effectively improve the quality of motor.

In detail, the connector unit includes a bushing 31, a pressing ring 32, and a nut 33, and the rotor 3 is sequentially sleeved with the nut 33, the pressing ring 32, the impeller 4, and the bushing 31 along the air inlet direction, and the impeller 4 is located in the fan housing 5.

The stator assembly further comprises a wiring terminal 11, the wiring terminal 11 is mounted on the stator 1, a soldering tin hole 82 is formed in the controller unit 8, the position of the soldering tin hole 82 corresponds to that of the wiring terminal 11, and the wiring terminal 11 is connected with the controller unit 8 through the soldering tin hole 82. The upper controller unit 8 is provided with a connection port which is connected to a power line 83. Specifically, the assembly connected with the rotor 3 further comprises a rotating shaft, magnetic steel, a dust-proof sheet and a bearing. The rear end bracket 2 is also internally provided with a wave washer, and the wave washer is abutted with the bearing, so that looseness can be prevented and impact can be resisted.

In summary, the motor to be protected is provided with the stator assembly, the rotating member, the shell and the controller unit, wherein the reinforcing ribs are arranged on the shell, so that the strength of the motor is improved, the flow passage area can be increased, the distance between the fixed impeller unit in the shell and the shell is smaller than 0.5mm, when the motor works, the energy loss caused by turbulent flow of an air duct can be reduced, the air inlet quantity is effectively improved, the running efficiency of the motor is ensured, the size of the motor is effectively reduced to be within 3.5mm of the maximum outer diameter, and compared with the size of the motor used in the conventional hand suction, the size and the volume of the motor are further reduced, and the noise can be effectively reduced; in addition, when the motor is assembled, the high-precision requirements on injection molding and assembly manufacturing processes caused by mutual fixation of all parts are avoided, so that resources and cost can be effectively saved; in addition, the motor can avoid the damage of the controller unit caused by excessive stress, and ensure the quality of the controller unit, so that the quality of the motor can be effectively improved.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. An electric motor, characterized in that: comprising the steps of (a) a step of,

a stator assembly including a stator;

and the controller unit is connected with the stator.

2. An electric machine as claimed in claim 1, characterized in that: the fixed impeller unit comprises a plurality of uniformly arranged air guide sheets, and the included angle between the plane where the air guide sheets are positioned and the plane where the cross section of the rotor is positioned is alpha, and alpha is more than or equal to 15 degrees and less than or equal to 30 degrees.

3. An electric machine as claimed in claim 1, characterized in that: the first reinforcing rib units comprise three groups of uniformly arranged reinforcing ribs, and the angle between every two adjacent groups of reinforcing ribs is 120 degrees.

4. An electric machine as claimed in claim 1, characterized in that: the rear end support is provided with a threaded hole, and the rear end support is connected with the shell through a first screw unit.

5. An electric machine as claimed in claim 1, characterized in that: the casing is provided with a second reinforcing rib unit along the radial direction, and the second reinforcing rib unit comprises a plurality of uniformly arranged reinforcing ribs.

6. An electric machine as claimed in claim 1, characterized in that: the positioning cover is arranged between the positioning cover and the rear end support, the rear end support is connected with the positioning cover through a second screw unit, a second through hole for the second screw unit to pass through is formed in the controller unit, and the second screw unit passes through the second through hole.

7. An electric machine as claimed in claim 6, characterized in that: the second through holes are formed along the outer wall of the controller unit in an inward concave manner, and three second through holes are uniformly formed along the circumferential direction of the controller unit.

8. An electric machine as claimed in claim 1, characterized in that: the connecting piece unit comprises a lining, a pressing ring and a nut, wherein the nut, the pressing ring, the movable impeller and the lining are sleeved on the rotor in sequence along the air inlet direction, and the movable impeller is positioned in the fan housing.

9. An electric machine as claimed in claim 1, characterized in that: the stator assembly further comprises a wiring terminal, the wiring terminal is installed on the stator, a soldering tin hole is formed in the controller unit, and the wiring terminal is connected with the controller unit through the soldering tin hole.

10. An electric machine as claimed in claim 1, characterized in that: the upper unit of the controller is provided with a wiring port, and the wiring port is connected with a power line.