CN219351409U

CN219351409U - Outer rotor structure and direct current motor of fetching water

Info

Publication number: CN219351409U
Application number: CN202320410399.5U
Authority: CN
Inventors: 彭东琨; 黄志荣
Original assignee: Foshan Shunde Lepuda Motor Co ltd
Current assignee: Foshan Shunde Lepuda Motor Co ltd
Priority date: 2023-03-07
Filing date: 2023-03-07
Publication date: 2023-07-14
Anticipated expiration: 2033-03-07

Abstract

The utility model belongs to the technical field of direct current motors, and discloses an outer rotor structure and a direct current water-beating motor. According to the outer rotor structure and the direct current water-beating motor, due to the design that the plurality of inwards-protruding bosses are uniformly distributed on the inner side wall of the side part of the rotor cover, when the rotor is assembled into the rotor cover, the bosses can play a role in adjusting, the rotor is prevented from bursting the rotor cover, and the product qualification rate is improved.

Description

Outer rotor structure and direct current motor of fetching water

Technical Field

The utility model belongs to the technical field of direct current motors, and particularly relates to an outer rotor structure and a direct current water-beating motor.

Background

A dc motor refers to a rotating electrical machine that converts direct-current electric energy into mechanical energy (a dc motor) or converts mechanical energy into direct-current electric energy (a dc generator), and is a motor that can realize the mutual conversion of direct-current electric energy and mechanical energy.

The rotor cover of the external rotor direct current motor is usually made of a metal material, and the price of the metal material is relatively high, so in order to reduce the cost, the rotor cover is usually manufactured by adopting an injection molding process in the prior art, however, when the external rotor is assembled into the rotor cover, the rotor cover is easily burst by the external rotor, so that the defective rate of the product is improved.

Accordingly, the prior art is subject to improvement and development.

Disclosure of Invention

The utility model aims to provide an outer rotor structure and a direct current water pumping motor, which can avoid the situation that a rotor cover is burst when the rotor is assembled into an injection-molded rotor cover.

In a first aspect, the utility model provides an outer rotor structure, which comprises a rotor cover, a rotor and a rotating shaft, wherein the rotor cover is manufactured by adopting an injection molding process; a plurality of bosses protruding inwards are uniformly distributed on the inner side wall of the side part of the rotor cover; the rotor is arranged in the rotor cover, and the outer side wall of the rotor is abutted with the boss; the rotating shaft and the rotor are coaxially arranged, and one end of the rotating shaft extends into the rotor and is connected with the inner side wall of the bottom of the rotor cover.

According to the outer rotor structure provided by the utility model, due to the design that the plurality of inwards-protruding bosses are uniformly distributed on the inner side wall of the side part of the rotor cover, when the rotor is assembled into the rotor cover, the bosses can play a role in adjusting, so that the rotor is prevented from bursting the rotor cover, and the product qualification rate is improved.

Further, a fixing sleeve is arranged on the inner side wall of the bottom of the rotor cover, the fixing sleeve and the rotor cover are coaxial, and one end of the rotating shaft is inserted into the fixing sleeve.

According to the utility model, the fixing sleeve coaxial with the rotor cover is arranged on the inner side wall at the bottom of the rotor cover, so that the coaxiality of the rotating shaft and the rotor cover can be ensured, the connection area of the rotating shaft and the rotor cover is increased, and the effective connection of the rotating shaft and the rotor cover is ensured.

Further, the inner side wall of the bottom of the rotor cover is provided with a reinforcing rib, and the reinforcing rib is connected with the outer side wall of the fixing sleeve.

According to the utility model, the reinforcing ribs are arranged on the inner side wall of the bottom of the rotor cover to be connected with the fixing sleeve, so that the strength of the joint surface between the inner side wall of the bottom of the rotor cover and the fixing sleeve is increased, and the fixing sleeve is prevented from being broken.

Further, the height of the boss is the same as the height of the side inner sidewall of the rotor cover.

In a second aspect, the present utility model provides a direct current water-beating motor, which includes the outer rotor structure of the first aspect.

Further, the direct current water-beating motor further comprises a mounting seat and a stator structure, wherein the stator structure is arranged on the mounting seat, and the other end of the rotating shaft penetrates through the stator structure and the mounting seat so that the rotor is rotationally arranged on the outer side of the stator structure.

Further, the stator structure is wrapped with a protective shell.

Further, the stator structure comprises a circuit board, a stator core, a stator winding and a lead clamp; the circuit board and the stator core are arranged on the mounting seat; the stator winding is arranged on the stator core and is connected with the circuit board; the lead clamp is arranged on the circuit board, and one end of the lead clamp is exposed out of the protective shell.

Further, a positioning opening is formed in the mounting seat, and one end of the lead clamp is located in the positioning opening.

Further, the mounting seat is provided with a buckle, the stator structure is provided with a clamping groove, and the buckle is clamped in the clamping groove.

Therefore, the design that the inner side wall of the side part of the rotor cover is uniformly provided with the plurality of inwards-protruding bosses enables the bosses to play a role in adjusting when the rotor is assembled into the rotor cover, so that the rotor cover is prevented from being burst by the rotor, and the product percent of pass is improved.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

Fig. 1 is a schematic structural diagram of an outer rotor structure according to an embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of a rotor cover according to an embodiment of the present utility model.

Fig. 3 is a schematic structural diagram of a dc water-pumping motor according to an embodiment of the present utility model.

Fig. 4 is an exploded schematic diagram of a dc water-beating motor according to an embodiment of the present utility model.

Fig. 5 is a cross-sectional view of a direct current water-beating motor according to an embodiment of the present utility model.

Fig. 6 is a schematic structural diagram of a stator structure according to an embodiment of the present utility model.

Description of the reference numerals: 10. a mounting base; 101. positioning the opening; 102. a buckle; 20. a stator structure; 201. a protective shell; 202. a circuit board; 203. a stator core; 204. a stator winding; 205. a lead clip; 206. a clamping groove; 30. an outer rotor structure; 301. a rotor cover; 3011. a boss; 302. a rotor; 303. a rotating shaft; 304. a fixed sleeve; 305. reinforcing ribs; 40. and a sealing gasket.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

In a first aspect, as shown in fig. 1 and 2, an outer rotor structure 30 of the present utility model includes a rotor cover 301, a rotor 302 and a rotating shaft 303. The rotor cover 301 is manufactured by adopting an injection molding process, and a plurality of inwards-protruding bosses 3011 are uniformly distributed on the inner side wall of the side part of the rotor cover 301. Rotor 302 is provided in rotor cover 301, and the outer wall of rotor 302 abuts against boss 3011. The shaft 303 is disposed coaxially with the rotor 302, and one end thereof extends into the rotor 302 and is connected to the bottom inner side wall of the rotor cover 301.

In a specific application, first, the rotor cover 301 is manufactured by an injection molding process, then the rotor 302 is pressed into the rotor cover 301, and finally, the rotating shaft 303 is coaxially connected with the inner sidewall of the bottom of the rotor cover 301, so as to obtain the outer rotor structure 30.

Through this technical scheme for when assembling rotor 302 into rotor cover 301, the lateral wall of rotor 302 is not with the lateral inside wall direct contact of rotor cover 301, and the lateral inside wall of rotor 302 is not directly extruded rotor cover 301's lateral inside wall promptly, but extrusion boss 3011, and the lateral wall extrusion boss 3011 in-process of rotor 302, boss 3011 can play the regulation cushioning effect, avoids rotor 302 to burst rotor cover 301, thereby can reduce the defective rate of product.

Specifically, to ensure that the shaft 303 is concentric with the rotor cover 301, the shaft 303 may be injection molded with the rotor cover 301 by injection molding.

Specifically, the boss 3011 is integrally formed with the rotor cover 301. By designing the boss 3011 and the rotor cover 301 to be integrally molded, the strength of connection between the boss 3011 and the rotor cover 301 can be ensured.

In some preferred embodiments, the inner sidewall of the bottom of the rotor cover 301 is provided with a fixing sleeve 304, the fixing sleeve 304 is coaxial with the rotor cover 301, and one end of the rotating shaft 303 is inserted into the fixing sleeve 304. In a specific application, by arranging the fixing sleeve 304 coaxial with the rotor cover 301 on the inner side wall of the bottom of the rotor cover 301, the coaxiality of the rotating shaft 303 and the rotor cover 301 can be ensured, the connection area of the rotating shaft 303 and the rotor cover 301 is increased, and the effective connection of the rotating shaft 303 and the rotor cover 301 is ensured. Specifically, the fixing sleeve 304 and the rotor cover 301 may be integrally formed.

In some preferred embodiments, the inner side wall of the bottom of the rotor cover 301 is provided with a reinforcing rib 305, and the reinforcing rib 305 is connected to the outer side wall of the fixing sleeve 304. In a specific application, the reinforcing ribs 305 are arranged on the inner side wall of the bottom of the rotor cover 301 to be connected with the fixing sleeve 304, so that the strength of the joint surface between the inner side wall of the bottom of the rotor cover 301 and the fixing sleeve 304 is increased, and the fixing sleeve 304 is prevented from being broken. Specifically, the number of the reinforcing ribs 305 is plural, and the plurality of reinforcing ribs 305 are uniformly distributed around the fixing sleeve 304.

In some preferred embodiments, the height of the boss 3011 is the same as the height of the side inner sidewall of the rotor cover 301. In a specific application, by designing the height of the boss 3011 to be the same as the height of the side inner sidewall of the rotor cover 301, the boss 3011 always has an adjusting effect to prevent the rotor 302 from bursting the rotor cover 301 from starting to completely pressing the rotor 302 into the rotor cover 301.

In a second aspect, as shown in fig. 3, 4 and 5, the present utility model provides a dc water pumping motor, which includes a mounting base 10, a stator structure 20 and an outer rotor structure 30 of the first aspect. The stator structure 20 is disposed on the mount 10. The other end of the rotating shaft 303 penetrates through the stator structure 20 and the mounting base 10, so that the rotor 302 is rotatably disposed outside the stator structure 20.

In a specific application, when the stator structure 20 is energized to generate a magnetic field to drive the rotor 302 to rotate, the rotor 302 drives the rotor cover 301 to rotate, and the rotor cover 301 drives the rotating shaft 303 to rotate, thereby driving the load connected with the rotating shaft 303 to rotate.

In some preferred embodiments, the stator structure 20 is surrounded by a protective casing 201. In a specific application, the protecting shell 201 is integrally injection molded with the stator structure 20 by adopting an injection molding process, and each part of the stator structure 20 is isolated from the outside by wrapping the protecting shell 201 outside the stator structure 20, so that the stator structure 20 can be waterproof and dustproof.

In some preferred embodiments, the rotating shaft 303 penetrates through the stator structure 20 and one end of the mounting base 10, and a sealing pad 40 is sleeved on one end of the rotating shaft, and the sealing pad 40 abuts against one surface of the mounting base 10 away from the stator structure 20, so as to seal a gap between the mounting base 10 and the rotating shaft 303.

In some preferred embodiments, the stator structure 20 includes a circuit board 202, a stator core 203, stator windings 204, and lead clips 205. The circuit board 202 and the stator core 203 are both disposed on the mount 10. The stator winding 204 is mounted on the stator core 203 and is connected to the circuit board 202. The lead clamp 205 is disposed on the circuit board 202, and one end of the lead clamp 205 is exposed from the protective shell 201. In a specific application, the lead clamp 205 is arranged on the circuit board 202, and one end of the lead clamp 205 is exposed out of the protective shell 201, so that when the circuit board 202, the stator core 203, the stator winding 204 and the lead clamp 205 are molded into a whole by adopting an injection molding process, the lead clamp 205 can protect a lead led out of the circuit board 202, and the situation that the package wrapping the lead is fused to cause electric leakage due to high temperature during injection molding is avoided.

In some preferred embodiments, the mounting base 10 is provided with a positioning opening 101, and one end of the lead clip 205 is located in the positioning opening 101. In a specific application, the positioning opening 101 is formed in the mounting seat 10, so that when the stator structure 20 is mounted on the mounting seat 10, the lead wire clamp 205 can be clamped in the positioning opening 101, and the stator structure 20 can be rapidly positioned, so that the stator structure 20 can be rapidly mounted at a preset position of the mounting seat 10, and the assembly efficiency can be improved.

As shown in fig. 6, in some preferred embodiments, the mount 10 is provided with a buckle 102, and the stator structure 20 has a slot 206, where the buckle 102 is engaged with the slot 206. In particular applications, the quick mounting of the stator structure 20 to the mount 10 is facilitated by providing the catch 102 on the mount 10 and the catch slot 206 on the stator structure 20. Specifically, the number of the buckles 102 and the clamping grooves 206 is four, the four buckles 102 are uniformly distributed on the mounting seat 10, the four clamping grooves 206 are uniformly distributed on the protective shell 201, and the four clamping grooves 206 and the four buckles 102 are matched to fix the stator structure 20. Of course, the number of the buckle 102 and the slot 206 can be adaptively increased or decreased according to actual requirements, and the above is only an embodiment of the present utility model, and should not be limited thereto.

In summary, in the outer rotor structure and the direct current water-beating motor of the present utility model, due to the design that the inner side wall of the side portion of the rotor cover 301 is uniformly provided with the plurality of inwardly protruding bosses 3011, when the rotor 302 is assembled into the rotor cover 301, the bosses 3011 can play a role in adjusting, so as to prevent the rotor 302 from bursting the rotor cover 301, thereby improving the product yield.

What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims

1. An outer rotor structure comprises a rotor cover, a rotor and a rotating shaft, wherein the rotor cover is manufactured by adopting an injection molding process; the rotor cover is characterized in that a plurality of bosses protruding inwards are uniformly distributed on the inner side wall of the side part of the rotor cover; the rotor is arranged in the rotor cover, and the outer side wall of the rotor is abutted with the boss; the rotating shaft and the rotor are coaxially arranged, and one end of the rotating shaft extends into the rotor and is connected with the inner side wall of the bottom of the rotor cover.

2. The outer rotor structure according to claim 1, wherein a bottom inner side wall of the rotor cover is provided with a fixing sleeve, the fixing sleeve is coaxial with the rotor cover, and one end of the rotating shaft is inserted into the fixing sleeve.

3. The outer rotor structure according to claim 2, wherein the bottom inner side wall of the rotor cover is provided with reinforcing ribs, and the reinforcing ribs are connected with the outer side wall of the fixing sleeve.

4. The outer rotor structure according to claim 1, wherein the boss has the same height as the side inner sidewall of the rotor cover.

5. A direct current water-beating motor, characterized by comprising an outer rotor structure as claimed in any one of claims 1-4.

6. The direct current water supply motor of claim 5, further comprising a mounting base and a stator structure, wherein the stator structure is disposed on the mounting base, and the other end of the rotating shaft penetrates through the stator structure and the mounting base, so that the rotor is rotatably disposed on the outer side of the stator structure.

7. The direct current watering motor according to claim 6, wherein the stator structure is surrounded by a protective shell.

8. The direct current water supply motor of claim 7, wherein the stator structure comprises a circuit board, a stator core, a stator winding and a lead clip; the circuit board and the stator core are arranged on the mounting seat; the stator winding is arranged on the stator core and is connected with the circuit board; the lead clamp is arranged on the circuit board, and one end of the lead clamp is exposed out of the protective shell.

9. The direct current water supply motor of claim 8, wherein the mounting base is provided with a positioning opening, and one end of the lead clip is positioned in the positioning opening.

10. The direct current water supply motor of claim 6, wherein the mounting base is provided with a buckle, the stator structure is provided with a clamping groove, and the buckle is clamped in the clamping groove.