CN217545722U

CN217545722U - Outer rotor motor and have its cleaning equipment

Info

Publication number: CN217545722U
Application number: CN202220935040.5U
Authority: CN
Inventors: 李显锐
Original assignee: Hangzhou Hengye Motor Manufacture Co ltd
Current assignee: Hengye Intelligent Drive Hangzhou Co ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-10-04
Anticipated expiration: 2032-04-21

Abstract

The utility model provides an external rotor motor and have its cleaning equipment belongs to motor technical field, and wherein, external rotor motor includes: a housing having a housing for accommodating the rotor and the stator; the rotor is rotatably arranged in the housing, a driving shaft is fixedly connected to the center of the rotor, and an accommodating cavity for accommodating the stator is formed in the rotor; the stator is arranged in the accommodating cavity at a distance from the rotor; a rear end seat connected with the stator, wherein the rear end seat is provided with an outer side wall which partially extends along the axial direction in the circumferential direction to form part of the shell, and the end part of the outer side wall is connected with the cover shell; the utility model discloses an external rotor motor connects the stator through the rear end seat, is formed with the lateral wall on the rear end seat, can increase the heat dissipation through the lateral wall to improve the radiating efficiency of stator and stator zone during operation, guarantee the inside heat dissipation of external rotor motor, improve external rotor motor's life.

Description

Outer rotor motor and have its cleaning equipment

Technical Field

The utility model relates to the technical field of motors, concretely relates to external rotor motor and have its cleaning equipment.

Background

At present, a brush disc of a full-automatic or non-full-automatic cleaning device is generally driven by a motor. The motor includes: the inner rotor motor has high speed and small torque, and the requirement of driving the brush disc at high torque and low speed is met after the inner rotor motor passes through the speed reducer. The outer rotor motor can be directly designed to have low rotating speed and large torque so as to meet the use requirement of a brush disc on cleaning equipment, and a speed reducer is omitted.

In the outer rotor motor in the prior art, the stator is arranged in the center of the rotor, and the sealing problem of the motor is considered, so that the heat dissipation efficiency of the stator is low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in: the defect that the stator heat dissipation efficiency of the outer rotor motor in the prior art is low is overcome, and therefore the outer rotor motor and the cleaning equipment with the outer rotor motor are provided.

In order to solve the technical problem, the utility model provides an external rotor motor, include:

a housing having a housing for accommodating the rotor and the stator;

the rotor is rotatably arranged in the housing, a driving shaft is fixedly connected to the center of the rotor, and an accommodating cavity for accommodating the stator is formed in the rotor;

the stator is arranged in the accommodating cavity at a distance from the rotor;

the rear end seat is connected with the stator, the rear end seat is provided with an outer side wall which partially extends along the axial direction in the circumferential direction to form part of the shell, and the end part of the outer side wall is connected with the cover shell.

Optionally, the rear end socket is internally formed with a mounting cavity for receiving a drive plate.

Optionally, the rear end of the mounting cavity is open, and an end cover is arranged at the opening of the mounting cavity and detachably covered.

Optionally, the end cap is removably connected to the rear end block by fasteners.

Optionally, the rear end seat is detachably connected to the housing by a fastener.

Optionally, the front end of the housing is provided with a mounting hole for connecting a cleaning device.

Alternatively, both ends of the driving shaft pass through the rotor and the stator, respectively.

Optionally, the front end of the driving shaft passes through the rotor and then is connected to the housing through a bearing, and the rear end of the driving shaft passes through the stator and then is connected to the rear end seat through a bearing.

Optionally, a sealing element is arranged between the front end of the driving shaft extending out of the rotor and the housing.

The utility model provides a cleaning equipment, including equipment body and brush dish, brush dish and any one of above-mentioned scheme the external rotor motor in the actuating shaft be connected.

The utility model discloses technical scheme has following advantage:

1. the utility model provides an external rotor motor connects the stator through the rear end seat, is formed with the lateral wall on the rear end seat, can increase the heat dissipation through the lateral wall to improve the radiating efficiency of stator and stator zone during operation, guarantee the inside heat dissipation of external rotor motor, improve external rotor motor's life.

2. The utility model provides a cleaning equipment owing to adopted above-mentioned external rotor motor, consequently has external rotor motor's all advantages.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a perspective view of a specific embodiment of an outer rotor motor according to an embodiment of the present invention.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a second angular perspective view of fig. 2.

Fig. 4 is an axial half-sectional view of fig. 1.

Fig. 5 is a perspective view of the rear end mount.

Description of reference numerals:

1. a housing; 2. a rear end seat; 3. a drive shaft; 4. a drive plate; 5. an end cap; 6. a stator; 7. a rotor; 8. mounting holes; 9. a first bearing; 10. a second bearing; 11. a clamp spring; 12. a first seal groove; 13. a second seal groove; 14. and a third seal groove.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of 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", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

The outer rotor motor provided by the embodiment can be used for cleaning equipment, such as a full-automatic brush disc sweeper and the like.

As shown in fig. 1, a specific embodiment of the external rotor motor provided in this embodiment includes: a housing, the housing comprising: a housing 1 and a rear end mount 2. The rotor 7 and the stator 6 are accommodated in the housing 1, the rotor 7 is rotatably arranged in the housing 1, the driving shaft 3 is fixedly connected to the center of the rotor 7, and an accommodating cavity for accommodating the stator 6 is formed in the rotor 7. The stator 6 is arranged in the accommodating cavity at a distance from the rotor 7. The rear end seat 2 is connected with the stator 6, and the rear end seat 2 has an outer side wall which extends partially in the axial direction in the circumferential direction to form part of the housing, and the end of the outer side wall is connected with the housing 1.

The outer rotor motor that this embodiment provided, the shell all adopts metal material, and the heat radiating area of increase motor and driver has improved the radiating efficiency greatly. Wherein connect stator 6 through rear end seat 2, be formed with the lateral wall on rear end seat 2, can increase the heat dissipation through the lateral wall to improve the radiating efficiency of stator 6 and the regional during operation of stator 6, guarantee the inside heat dissipation of external rotor motor, improve external rotor motor's life.

As shown in fig. 2 and 3, in the outer rotor motor according to the present embodiment, a mounting cavity for accommodating the drive plate 4 is formed inside the rear end base 2, and the drive plate 4 is mounted in the mounting cavity by a fastener. The rear end opening of installation cavity is covered with end cover 5 at this opening part detachable, and specific end cover 5 passes through fastener detachable closing cap at the rear end opening part of rear end seat 2. Through set up the installation cavity in the inside of rear end seat 2, avoided drive plate 4 independent design safety protection measure, considered design safety protection together with the motor, reduced spare part quantity, reduced the space size of motor. The drive plate 4 is arranged on the rear end seat 2, and can be cooled by the metal shell of the motor, so that the heat dissipation area is greatly increased, the stability and the reliability of the performance of each electronic element are improved, and the service life is prolonged.

The connection matching part between the rear end seat 2 and the stator 6 provided by the embodiment can adopt a key and key groove structure which is commonly used in mechanical design to match. When the stator 6 iron core is stamped, a key structure is designed on the inner circular surface matched with the rear end seat 2, and the rear end seat 2 is provided with a key groove structure, so that the subsequent process is convenient to machine and manufacture. Rear end seat 2 and stator 6 adopt interference fit, and the keyway on the assembled rear end seat 2 is impressed with the key alignment on the stator 6, plays the location, spacing and prevents that the rotation of circumferencial direction from skidding the effect.

As shown in fig. 2 and 3, in the outer rotor motor according to the present embodiment, the rear end base 2 is detachably connected to the housing 1 by a fastening member. Specifically, the fastener extends out towards the housing 1 through the mounting cavity of the rear end seat 2, and then is in threaded connection with the housing 1, so that the rear end seat 2 is connected with the housing 1.

As shown in fig. 1, the present embodiment provides an external rotor motor, in which a mounting hole 8 for connecting a cleaning device is provided at a front end of the housing 1, so that the motor can be directly mounted on a body of the cleaning device through the mounting hole 8. Specifically, a fastener may be projected from the apparatus body of the cleaning apparatus, and then the fastener is passed into the mounting hole 8 by a screw structure, thereby mounting the motor on the apparatus body.

As shown in fig. 4, the present embodiment provides an external rotor motor in which both ends of the driving shaft 3 pass through the rotor 7 and the stator 6, respectively. The front end of the driving shaft 3 passes through the rotor 7 and then is connected with the housing 1 through a first bearing 9, and the rear end of the driving shaft 3 passes through the stator 6 and then is connected with the rear end seat 2 through a second bearing 10. Specifically, as shown in fig. 5, after the second bearing 10 is installed in the installation cavity of the rear end seat 2, it can be fixed in the rear end seat 2 by the snap spring 11.

As shown in fig. 4, in the external rotor motor according to the present embodiment, a sealing member is provided between the front end of the driving shaft 3 extending out of the rotor 7 and the housing 1, and the sealing member is used to seal between the driving shaft 3 and the housing 1. Specifically, the sealing element can be a sealing strip or other high-temperature-resistant shaft sealing materials.

As shown in fig. 4, in the outer rotor motor according to this embodiment, in order to facilitate the installation of the sealing strips, a first sealing groove 12 is provided in an inner wall of the housing 1 for contacting with the driving shaft 3, and the sealing strips are assembled in the first sealing groove 12 during assembly, so that the waterproof and dustproof grade can be improved.

As shown in fig. 4, in the outer rotor motor provided in this embodiment, the rear end base 2 is formed with a first lip extending into the housing 1, a second sealing groove 13 is formed in an outer wall of the first lip, and a sealing strip is assembled in the second sealing groove 13 during assembly, so that the waterproof and dustproof grade can be improved.

As shown in fig. 4, in the outer rotor motor according to this embodiment, a second lip extending inward toward the rear end base 2 is formed on the end cover 5. The outer wall of the second lip is provided with a third sealing groove 14, and a sealing strip is assembled in the third sealing groove 14 during assembly, so that the waterproof and dustproof grade can be improved.

In addition, the present embodiment also provides a cleaning apparatus including an apparatus body and a brush disk connected to the drive shaft 3 in the outer rotor motor described in the above embodiment. The equipment body is fixedly connected with a housing 1 of the outer rotor motor.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the present invention.

Claims

1. An outer rotor motor, comprising:

a housing having a casing (1) for accommodating a rotor (7) and a stator (6);

the rotor (7) is rotatably arranged in the housing (1), the center of the rotor (7) is fixedly connected with the driving shaft (3), and an accommodating cavity for accommodating the stator (6) is formed in the rotor (7);

a stator (6) arranged in the accommodating cavity at a distance from the rotor (7);

the rear end seat (2) is connected with the stator (6), the rear end seat (2) is provided with an outer side wall which partially extends along the axial direction in the circumferential direction to form part of the shell, and the end part of the outer side wall is connected with the cover shell (1).

2. The external rotor motor according to claim 1, wherein the rear end seat (2) is internally formed with a mounting cavity for receiving a drive plate (4).

3. The external rotor motor according to claim 2, wherein the mounting cavity is open at the rear end, and an end cap (5) is provided at the opening of the removable cap.

4. The external rotor motor according to claim 3, wherein the end cap (5) and the rear end seat (2) are detachably connected by fasteners.

5. The external rotor motor according to claim 1, wherein the rear end seat (2) is detachably connected to the housing (1) by fasteners.

6. The external rotor motor according to claim 1, wherein the front end of the housing (1) is provided with a mounting hole (8) for connecting a cleaning device.

7. The external rotor motor according to any of claims 1-6, wherein both ends of the drive shaft (3) pass through the rotor (7) and the stator (6), respectively.

8. The external rotor motor according to claim 7, wherein the front end of the drive shaft (3) is connected to the housing (1) through a bearing after passing through the rotor (7), and the rear end of the drive shaft (3) is connected to the rear end base (2) through a bearing after passing through the stator (6).

9. The external rotor motor according to claim 7, wherein a seal is provided between the front end of the drive shaft (3) protruding from the rotor (7) and the housing (1).

10. A cleaning device, characterized by comprising a device body and a brush disk connected to a drive shaft (3) in an outer rotor motor according to any one of claims 1-9.