CN108808904A - Stator module, motor and washing machine - Google Patents

Abstract

The present invention provides a stator assembly, a motor and a washing machine. The stator assembly includes a first frame and a second frame, the first frame includes a first ring portion, the second frame includes a second ring portion, and the first ring portion has a Axially facing the first inner end surface of the second annular part, the second annular part has a second inner end surface facing the first annular part in the axial direction, the first inner end surface and the second inner end surface fit together, the second inner end surface A ring part is provided with a first mounting hole axially, and a second ring part is provided with a second mounting hole axially. The second mounting hole is arranged coaxially with the first mounting hole. The first mounting hole A groove is provided on the outer end away from the direction of the second annular part, and the groove is recessed toward the direction of the second annular part. The wire slot has an open end in the axial direction of the second annular part through the wire slot. The stator assembly greatly shortens the axial thickness of the motor, and realizes the ultra-thin purpose of the motor.

Description

Stator assemblies, motors and washing machines

technical field

The invention relates to the technical field of motor equipment, in particular to a stator assembly, a motor with the stator assembly, and a washing machine with the motor.

Background technique

The appearance of drum type washing machine is beautiful, and its structure is more exquisite and compact than that of pulsator type washing machine. Generally, the body of drum type washing machine is half the size of the body of pulsator type washing machine. It not only occupies a small space, but also is safe and convenient to use. favored by consumers.

Among them, the structure of the motor directly affects the overall size of the drum-type washing machine. As shown in Figures 1 and 2, the motor 11 of the existing drum-type washing machine 1 is located at the back of the washing machine 1 (the opening and closing door of the drum is the front), and the motor 11 is connected with the water cylinder 12 of the washing machine 1 through its mounting flange 111. The motor 11 The rotating shaft 112 is connected with the drum (not shown) of the washing machine 1 . The coil windings of the existing motor stator 113 come out from one end adjacent to the mounting flange 111, so that more positions need to be avoided in the axial direction between the motor stator 113 and the mounting flange 111 to allow the wires to go out, resulting in the axial displacement of the motor 11. The thickness becomes thicker, and the overall size of the front-loading washing machine 1 is oversized at the same time. Moreover, there is no escape groove provided between the stator 113 of the existing motor and the connecting column 114 of the mounting flange 111 , thereby increasing the thickness of the motor 11 in the axial direction.

Contents of the invention

In order to achieve the first object of the present invention, the present invention provides a stator assembly that makes the axial thickness of the motor ultra-thin.

In order to achieve the second object of the present invention, the present invention provides an ultra-thin motor having the above-mentioned stator assembly.

In order to achieve the third object of the present invention, the present invention provides a washing machine with the above-mentioned ultra-thin motor.

In order to achieve the first purpose of the present invention, the present invention provides a stator assembly, including a first frame and a second frame, the first frame includes a first ring portion, the second frame includes a second ring portion, the first ring The portion has a first inner end surface facing the second annular portion in the axial direction, and the second annular portion has a second inner end surface facing the first annular portion in the axial direction, and the first inner end surface and the second inner end surface are in close contact with each other. Together, the first ring part is provided with a first installation hole axially, and the second ring part is provided with a second installation hole axially. The second installation hole is arranged coaxially with the first installation hole. A mounting hole is provided with a groove at the outer end away from the second annular portion, the groove is recessed toward the second annular portion, and the second annular portion is axially away from the outer end surface of the first annular portion A wire passing groove is provided, and the wire passing groove has an open end in the axial direction of the second annular portion.

It can be seen from the above scheme that the first installation hole of the first frame provided on the first annular portion is provided with a groove at the outer end away from the second annular portion, the groove is recessed toward the second annular portion, and at the same time The second ring part of the second frame is provided with a wire slot on the outer end surface of the first ring part in the axial direction, which greatly shortens the axial thickness of the motor with the stator assembly and realizes the ultra-thickness of the motor. The thin purpose makes the overall volume of the motor small and light.

A further solution is that the first installation hole is arranged close to the inner ring wall of the first annular portion.

A further solution is that there are at least two first mounting holes, at least two second mounting holes, and one second mounting hole is arranged coaxially with one first mounting hole.

A further solution is that, in the circumferential direction of the first annular portion, at least two grooves corresponding to at least two first installation holes communicate with each other.

A further solution is that the groove is provided through the outer ring wall of the first annular portion.

A further solution is that the stator assembly also includes an iron core, the iron core includes an annular yoke, the first annular portion and the second annular portion are respectively covered on the two axial ends of the annular yoke, and the groove is close to the first annular yoke. The bottom surface of an inner end surface is flush with the end surface of the iron core away from the second ring portion.

In a further solution, the iron core also includes a tooth portion, the tooth portion is arranged on the outer ring wall of the annular yoke portion and extends along the radial direction of the annular yoke portion, the first skeleton also includes a first outer claw, the first The outer claw is arranged on the outer ring wall of the first annular portion and extends radially along the first annular portion, and the second frame also includes a second outer claw, and the second outer claw is arranged on the second annular portion On the outer ring wall of the second annular portion and extending in the radial direction of the second annular portion, the first outer claw and the second outer claw respectively cover the two ends of the tooth portion in the axial direction of the annular yoke.

A further solution is that the iron core further includes a boot, the boot is connected to an end of the tooth away from the annular yoke and extends along the axial direction of the annular yoke, the first frame further includes a first limiting plate, the first The limiting plate is connected to the end of the first outer claw away from the first annular portion and extends along the axial direction of the first annular portion. The second skeleton also includes a second limiting plate connected to the second The outer pawl is away from one end of the second annular portion and extends along the axial direction of the second annular portion, and the first limiting plate and the second limiting plate respectively abut against the side surfaces of the boot portion close to the annular yoke.

In order to achieve the second purpose of the present invention, the present invention provides a motor, including a stator assembly and a rotor, the stator assembly includes a first skeleton and a second skeleton, the first skeleton includes a first ring portion, and the second skeleton includes a second circle The first annular portion has a first inner end surface facing the second annular portion in the axial direction, the second annular portion has a second inner end surface facing the first annular portion in the axial direction, the first inner The end face is attached to the second inner end face, the first ring part is provided with a first installation hole axially, and the second ring part is provided with a second installation hole axially, and the second installation hole is connected with the first The mounting holes are coaxially arranged, the first mounting hole is provided with a groove at the outer end away from the second annular portion, the groove is recessed toward the second annular portion, and the second annular portion is axially away from the first A wire passing groove is arranged on the outer end surface of the ring part, and the wire passing groove has an open end in the axial direction of the second ring part.

It can be seen from the above scheme that the first mounting hole of the first frame of the stator assembly is arranged on the first ring part, and a groove is opened at the outer end away from the second ring part, and the groove is concave toward the second ring part. At the same time, the second ring part of the second frame is provided with a wire slot on the outer end surface away from the first ring part in the axial direction, which greatly shortens the axial thickness of the motor and realizes the ultra-thin purpose of the motor , so that the overall volume of the motor is small and light in weight.

A further solution is that the motor also includes a mounting flange, one end of the mounting flange is provided with a fixing column, the groove is sleeved on the fixing column, and the first mounting hole is arranged coaxially with the fixing column.

A further solution is that the motor also includes a rotating shaft, the mounting flange is provided with a through hole, the rotating shaft is inserted into the through hole rotatably around its axis, one end of the rotating shaft is connected to the rotor, and the rotor is sleeved on the stator assembly.

In order to achieve the third purpose of the present invention, the present invention provides a washing machine, including a motor, the motor includes a stator assembly and a rotor, the stator assembly includes a first skeleton and a second skeleton, the first skeleton includes a first ring portion, and the second skeleton Including a second annular portion, the first annular portion has a first inner end surface facing the second annular portion in the axial direction, and the second annular portion has a second inner end surface facing the first annular portion in the axial direction , the first inner end surface and the second inner end surface are bonded together, the first ring part is provided with a first installation hole axially, and the second ring part is provided with a second installation hole axially. The hole is set coaxially with the first installation hole, and the first installation hole is provided with a groove at the outer end away from the direction of the second ring part, and the groove is recessed toward the direction of the second ring part, and the second ring part is axially A wire passing groove is provided on the outer end surface away from the first circular portion, and the wire passing groove has an open end in the axial direction of the second circular portion.

It can be seen from the above scheme that the first mounting hole of the first skeleton of the motor stator assembly is arranged on the first ring part, and a groove is opened at the outer end away from the second ring part, and the groove faces the direction of the second ring part. Concave, and at the same time, the second ring part of the second frame is provided with a wire slot on the outer end surface away from the first ring part in the axial direction, which greatly shortens the axial thickness of the motor and realizes the ultra-thin motor The purpose is to make the overall size of the motor small and light, and at the same time greatly reduce the thickness of the washing machine in the axial direction of the motor, so that the overall size of the product is reduced and the market competitiveness is improved.

Description of drawings

Fig. 1 is a partial sectional view of a conventional washing machine.

Figure 2 is an enlarged view at A of Figure 1 .

Fig. 3 is a partial sectional view of an embodiment of the washing machine of the present invention.

Fig. 4 is a sectional view of the motor in the embodiment of the washing machine of the present invention.

Fig. 5 is an exploded view of the stator assembly of the motor in the washing machine embodiment of the present invention.

Fig. 6 is a structural diagram of the stator assembly of the motor in the embodiment of the washing machine of the present invention.

Fig. 7 is an enlarged view at B of Fig. 6 .

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Detailed ways

The following embodiments mainly focus on the application of the motor of the present invention in washing machines, but are not limited to washing machines. Other household appliances that require ultra-thin motors can be used in the motor of the present invention, thereby reducing the overall size of the product.

Referring to FIGS. 3 and 4 , the washing machine 2 includes a water cylinder 21 , a drum (not shown) and a motor 22 , the drum is located inside the water cylinder 21 , and the motor 22 is installed on the rear wall of the water cylinder 21 . Wherein, the water cylinder 21 is fixedly arranged, and the drum is arranged rotatably around its axis. The motor 22 includes a rotating shaft 222, a rotor 224, a mounting flange 221 and a stator assembly 226. One axial end of the mounting flange 221 is provided with a plurality of axially extending fixing columns 2211, and the other axial end of the mounting flange 221 is connected to the water cylinder. 21, and the mounting flange 221 is provided with a through hole 2212 at the axial center, and a bearing 223 is placed in the through hole 2212. The stator assembly 226 is installed on the fixed column 2211, the rotor 224 is sleeved on the outside of the stator assembly 226, the rotating shaft 222 is arranged through the bearing 223, and the two ends of the rotating shaft 222 are respectively connected with the drum and the rotor 224.

5 to 7, the stator assembly 226 includes a first skeleton 227, a second skeleton 229, an iron core 228 and a coil winding (not marked), and the first skeleton 227 and the second skeleton 229 are respectively covered on the axial direction of the iron core 228. both ends. The iron core 228 has an annular yoke 2281, a tooth 2282 and a boot 2283. The tooth 2282 is arranged on the outer ring wall of the annular yoke 2281 and extends radially along the annular yoke 2281. The boot 2283 is connected to The tooth portion 2282 is away from one end of the annular yoke portion 2281 and extends along the axial direction of the annular yoke portion 2281 .

The first frame 227 has a first circular portion 2271, a first outer claw 2274 and a first limiting plate 2275, and the first circular portion 2271 has a second circular portion 2291 facing the second frame 229 in the axial direction. A plurality of first installation holes 2272 are formed axially through the first inner end surface and the first annular portion 2271 , and the plurality of first installation holes 2272 are coaxially arranged with the plurality of fixing posts 2211 respectively. A groove 2273 is formed on the outer end of the first mounting hole 2272 away from the second ring portion 2291 of the second frame 229 , and the groove 2273 is recessed toward the second ring portion 2291 of the second frame 229 . The groove 2273 is sleeved on the fixing column 2211 , and the bottom surface of the groove 2273 close to the first inner end surface of the first circular portion 2271 abuts against the top surface of the fixing column 2211 . The first outer claw 2274 is arranged on the outer ring wall of the first annular portion 2271 and extends in the radial direction of the first annular portion 2271. The first limiting plate 2275 is connected to the first outer claw 2274 away from the first circle One end of the ring portion 2271 extends along the axial direction of the first ring portion 2271 .

The second frame 229 has a second annular portion 2291 , a second outer claw 2293 and a second limiting plate 2294 , the second annular portion 2291 has a second inner end surface facing the first annular portion 2271 in the axial direction, A plurality of second installation holes 2292 are formed axially through the second annular portion 2291 , and the plurality of second installation holes 2292 are coaxially arranged with the plurality of first installation holes 2272 respectively. The second outer claw 2293 is arranged on the outer ring wall of the second annular portion 2291 and extends in the radial direction of the second annular portion 2291. The second limiting plate 2294 is connected to the second outer claw 2293 away from the second circle. One end of the ring portion 2291 extends along the axial direction of the second ring portion 2291 .

The first annular portion 2271 and the second annular portion 2291 respectively cover the axial ends of the annular yoke portion 2281, and the first inner end surface of the first annular portion 2271 and the second end surface of the second annular portion 2291 Fitted inside. At the same time, the first outer claw 2274 and the second outer claw 2293 respectively cover the two ends of the tooth portion 2282 in the axial direction of the annular yoke portion 2281, and the first limiting plate 2275 and the second limiting plate 2294 respectively abut against On the side of the boot 2283 close to the annular yoke 2281 , the iron core 228 is fixed between the first skeleton 227 and the second skeleton 229 . In this embodiment, the bottom surface of the groove 2273 close to the first inner end surface of the first annular portion 2271 is flush with the end surface of the iron core 228 away from the second annular portion 2291 , and the groove 2273 runs through the outer ring of the first annular portion 2271 wall setting.

In this embodiment, the first mounting hole 2272 is disposed close to the inner ring wall of the first annular portion 2271 , and correspondingly, the second mounting hole 2292 is also disposed close to the inner ring wall of the second ring portion 2291 . In this embodiment, three sets of fixed column combinations are evenly arranged in the peripheral direction of the mounting flange 221, and each set of fixed column combinations has three fixed columns 2211, and the perimeter length between two adjacent fixed columns 2211 in each set of fixed column combinations is the same as Wait. Wherein, the number of the first installation holes 2272 is equal to the number of the fixing columns 2211, the number of the second installation holes 2292 is equal to the number of the fixing columns 2211, and the first installation holes 2272, the second installation holes 2292 and the fixing columns 2211 are coaxial set up. Meanwhile, in the circumferential direction of the first annular portion 2271 , the plurality of grooves 2273 corresponding to the plurality of first mounting holes 2272 communicate with each other.

The second annular portion 2291 is provided with a wire passing groove 2294 on the outer end surface of the first annular portion 2271 in the axial direction, and the wire passing groove 2294 has an open end (not marked) in the axial direction of the second annular portion 2291 ), the coil winding is wound on the outer walls of the first outer claw 2274 and the second outer claw 2293 . The connecting wires between two adjacent coil windings can enter the wire slot 2294 through the open end. The rotor 224 of the motor 22 is arranged in the shape of a "U" thin shell, and the rotor 224 is sleeved on the outside of the stator assembly 226 . The rotor 224 has a disc part 2241 and an annular part 2242. The disc part 2241 is located on the outside of the second skeleton 229. The annular part 2242 is sleeved on the outside of the shoe part 2283 of the iron core 228. The inner wall of the annular part 2242 is evenly distributed along the circumferential direction. There are a plurality of permanent magnets 225 , and one end of the rotating shaft 222 is connected to the axis of the disk part 2241 .

The structure of the motor 22 in this embodiment is simple, and the production cost is low. The first mounting hole 2272 of the first frame 227 provided on the first circular portion 2271 is provided with a groove 2273 at the outer end away from the second circular portion 2291, and the groove 2273 is sleeved on the fixing post 2211 of the mounting flange 221 Above, the bottom surface of the groove 2273 close to the first inner end surface abuts against the end surface of the fixing column 2211, while the second annular portion 2291 of the second frame 229 is arranged on the outer end surface away from the first annular portion 2271 in the axial direction. The wire slot 2294 greatly shortens the axial thickness of the motor 22 and realizes the ultra-thin purpose of the motor 22, so that the overall volume of the motor 22 is small and light in weight. The above-mentioned motor 22 is applied to the washing machine 2, which greatly reduces the thickness of the washing machine 2 in the axial direction of the motor 22, makes the overall size of the product smaller, and improves the market competitiveness.

The above embodiments are only preferred examples of the present invention, and are not intended to limit the scope of the present invention, so all equivalent changes or modifications made according to the structure, features and principles of the patent scope of the present invention should be included in the patent of the present invention. within the scope of the application.

Claims (12)

1. A stator assembly, comprising a first frame and a second frame, characterized in that: The first skeleton includes a first annular portion, the second skeleton includes a second annular portion, the first annular portion has a first inner end surface facing the second annular portion in the axial direction, The second annular portion has a second inner end surface facing the first annular portion in the axial direction, and the first inner end surface is attached to the second inner end surface; A first installation hole is opened axially through the first annular portion, a second installation hole is opened axially through the second annular portion, and the second installation hole is connected to the first installation hole. Hole coaxial setting; The first mounting hole is provided with a groove at the outer end away from the second circular portion, and the groove is concave toward the second circular portion; A wire passing slot is provided on the outer end surface of the second ring part axially away from the first ring part, and the wire passing slot has an open end in the axial direction of the second ring part. 2. The stator assembly of claim 1, wherein: The first mounting hole is disposed close to the inner ring wall of the first annular portion. 3. The stator assembly according to claim 1 or 2, characterized in that: The number of the first mounting holes is at least two, the number of the second mounting holes is at least two, and one of the second mounting holes is arranged coaxially with one of the first mounting holes. 4. The stator assembly of claim 3, wherein: In the circumferential direction of the first annular portion, at least two of the grooves corresponding to at least two of the first mounting holes communicate with each other. 5. The stator assembly according to claim 1 or 2, characterized in that: The groove is disposed through the outer ring wall of the first annular portion. 6. The stator assembly according to claim 1 or 2, characterized in that: The stator assembly further includes an iron core, the iron core includes an annular yoke, and the first annular portion and the second annular portion cover the axial ends of the annular yoke respectively, A bottom surface of the groove close to the first inner end surface is flush with an end surface of the iron core away from the second annular portion. 7. The stator assembly of claim 6, wherein: The iron core also includes a tooth portion, the tooth portion is arranged on the outer ring wall of the annular yoke portion and extends along the radial direction of the annular yoke portion; The first frame further includes a first outer claw, the first outer claw is arranged on the outer ring wall of the first annular portion and extends radially of the first annular portion; The second frame also includes a second outer claw, the second outer claw is arranged on the outer ring wall of the second annular portion and extends radially along the second annular portion; The first outer claw and the second outer claw respectively cover the two ends of the tooth portion in the axial direction of the annular yoke. 8. The stator assembly of claim 7, wherein: The iron core further includes a boot, the boot is connected to an end of the tooth away from the annular yoke and extends along the axial direction of the annular yoke; The first skeleton also includes a first limiting plate, the first limiting plate is connected to the end of the first outer claw away from the first circular portion and along the axis of the first circular portion. to extend; The second skeleton also includes a second limiting plate, the second limiting plate is connected to the end of the second outer claw away from the second circular portion and along the axis of the second circular portion. to extend; The first limiting plate and the second limiting plate respectively abut against the side surfaces of the boot portion close to the annular yoke. 9. A motor, comprising a stator assembly and a rotor, characterized in that: The stator assembly is the stator assembly in any one of claims 1 to 7 above. 10. The motor according to claim 9, characterized in that: The motor also includes a mounting flange, one end of the mounting flange is provided with a fixing column, the groove is sleeved on the fixing column, and the first mounting hole is arranged coaxially with the fixing column. 11. The motor according to claim 10, characterized in that: The motor also includes a rotating shaft, the mounting flange is provided with a through hole, the rotating shaft is inserted into the through hole rotatably around its axis, one end of the rotating shaft is connected with the rotor, and the rotor sleeve on the stator assembly. 12. A washing machine, including a motor, characterized in that: The motor is the motor in any one of claims 9 to 11 above.