CN218958657U - Motor, power source device and cleaning equipment - Google Patents

Abstract

The utility model discloses a motor, a power source device and cleaning equipment, wherein the motor comprises a stator and a rotor; the stator comprises a stator core and three-phase windings; the stator core comprises a stator yoke and a plurality of stator teeth, the plurality of stator teeth are arranged on the inner peripheral wall of the stator yoke at intervals along the circumferential direction, and the tooth root of each stator tooth is detachably connected with the inner peripheral wall of the stator yoke; each of the three-phase windings comprises a plurality of branch windings which are arranged at intervals along the circumferential direction of the stator yoke, one stator tooth is arranged between two adjacent branch windings of each phase winding, and each branch winding is wound on two adjacent stator teeth. So set up, a plurality of windings of each phase winding of the stator of motor all adopt the wire winding mode of a stator tooth of interval, combine all windings to stagger the settlement of a stator tooth in proper order along the circumference of stator yoke again for magnetic tension between stator and the rotor is balanced, in order to reduce the vibration of motor, and then effectual noise that reduces the motor improves user's use experience.

Description

Motor, power source device and cleaning equipment

Technical Field

The utility model belongs to the technical field of cleaning equipment, and particularly relates to a motor, a power source device and cleaning equipment.

Background

Currently, cleaning equipment such as cleaners, acarids and the like typically provide the power required to operate the equipment by means of a motor. However, since the noise of the motor is large, the use experience of the user is poor, and thus improvement is needed.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is that the use experience of a user is poor due to the fact that the noise of the motor is large.

In order to solve the technical problems, the utility model provides a motor applied to cleaning equipment, wherein the motor comprises a stator and a rotor; wherein, the liquid crystal display device comprises a liquid crystal display device,

the stator comprises a stator core and three-phase windings; the stator core comprises a stator yoke which is annularly arranged and a plurality of stator teeth which are circumferentially arranged on the inner peripheral wall of the stator yoke at intervals, and the tooth root of each stator tooth is detachably connected with the inner peripheral wall of the stator yoke;

each of the three-phase windings comprises a plurality of branch windings which are arranged at intervals along the circumferential direction of the stator yoke, one stator tooth is arranged between two adjacent branch windings of each phase winding, each branch winding is wound on two adjacent stator teeth, and all branch windings are staggered with one stator tooth in sequence along the circumferential direction of the stator yoke;

the rotor is arranged between one ends of the plurality of stator teeth far away from the stator yoke.

Optionally, in the above motor, the number of the stator teeth is six, and each phase winding of the three-phase windings includes two branch windings.

Optionally, in the above motor, the inner peripheral wall of the stator yoke is provided with a plurality of insertion concave portions arranged at intervals along a circumferential direction of the inner peripheral wall, each tooth root of the stator tooth is provided with an insertion convex portion, and each insertion convex portion is in insertion fit with the corresponding insertion concave portion along an axial direction of the stator yoke.

Optionally, in the above motor, the width of each insertion protrusion is greater than the width of the corresponding stator tooth, and the width of the position where each stator tooth is connected to the corresponding insertion protrusion is tapered from the stator yoke to the rotor, and the width is the length of the stator tooth in the circumferential direction.

Optionally, the motor further includes an insulating sleeve, the outer peripheral wall of the insulating sleeve is provided with a mounting groove extending along the circumferential direction of the insulating sleeve, the inner peripheral wall of the insulating sleeve is provided with a plurality of guide channels arranged at intervals along the circumferential direction of the insulating sleeve, each guide channel extends along the axial direction of the insulating sleeve, each guide channel is communicated with the mounting groove, and each guide channel and the mounting groove are partially overlapped and arranged on the radial direction of the insulating sleeve;

the stator yoke is matched with the mounting groove, and each inserting concave part is positioned in a part where the corresponding guide channel and the mounting groove are overlapped, so that each inserting convex part can be inserted and matched with the corresponding guide channel and the corresponding inserting concave part.

Optionally, in the above motor, a groove wall of the mounting groove is provided with a limit protrusion, and the stator yoke is provided with a limit recess matched with the limit protrusion on an inner peripheral wall.

Optionally, the motor further includes an insulating support, where the insulating support includes a main body disposed in a ring shape and a plurality of sleeves, and an inner peripheral wall portion of the main body is penetrated to form a plurality of openings arranged at intervals along a circumferential direction of the main body, the plurality of sleeves are disposed at intervals along the circumferential direction of the main body, each sleeve is communicated with a corresponding opening, and each sleeve is sleeved on a corresponding stator tooth;

each sleeve body is provided with two guide parts, the two guide parts of each sleeve body are in plug fit with the corresponding guide channels, and each plug convex part is positioned between the two guide parts of the corresponding sleeve body.

Optionally, in the above motor, each of the guide portions is provided with a recess on a side facing away from the main body, and each recess is disposed through at two ends of the main body in the axial direction.

Optionally, in the above motor, a pole shoe is provided at an end of each stator tooth away from the stator yoke;

each sleeve body comprises a first section and a second section connected with the first section and the main body, the inner diameter of the second section is larger than that of the first section, each first section is sleeved on the corresponding stator tooth, each second section is sleeved on the corresponding pole shoe, and each inserting convex part is abutted to one end, away from the corresponding second section, of the corresponding first section.

Optionally, the motor further includes an insulating bracket, where the insulating bracket includes a main body disposed in a ring shape and a plurality of sleeves;

the inner peripheral wall of the main body is penetrated to form a plurality of openings which are distributed at intervals along the circumferential direction of the main body, a plurality of sleeve bodies are arranged on the outer peripheral wall of the main body at intervals along the circumferential direction, each sleeve body is communicated with the corresponding opening, and each sleeve body is sleeved on the corresponding stator tooth.

Optionally, the motor further comprises a housing and a rotating shaft, the housing is provided with an installation cavity, a cavity wall portion of the installation cavity penetrates through to form a yielding hole, the stator and the rotor are arranged in the installation cavity, the rotating shaft is rotatably installed in the installation cavity and connected with the rotor, and the rotating shaft is further arranged in alignment with the yielding hole.

Optionally, in the motor, a limiting shaft shoulder extending along the circumferential direction of the rotating shaft is convexly arranged on the peripheral wall of the rotating shaft; the motor is characterized by further comprising a first bearing, a shaft sleeve and a second bearing which are sequentially sleeved on the outer peripheral wall of the rotating shaft, one end of the first bearing, which is far away from the shaft sleeve, is abutted against the limiting shaft shoulder, the outer peripheral wall of the first bearing, the outer peripheral wall of the shaft sleeve and the outer peripheral wall of the second bearing are matched with the outer peripheral wall of the yielding hole, and the shaft sleeve provides a pretightening force for the outer ring end face of the first bearing and the outer ring end face of the second bearing.

Optionally, in the above motor, a glue groove is formed at a position where the outer peripheral wall of the rotating shaft is aligned with the second bearing.

The utility model also provides a power source device which is characterized by comprising a working piece and the motor, wherein the motor is in transmission connection with the working piece so as to drive the working piece to rotate.

The utility model also provides cleaning equipment, which comprises equipment body and the motor, wherein the motor is arranged on the equipment body.

The technical scheme provided by the utility model has the following advantages: compared with the prior art, the stator of the motor provided by the utility model has the advantages that the plurality of branch windings of each phase winding of the stator adopt a winding mode of spacing one stator tooth, and the setting of one stator tooth is sequentially staggered along the circumferential direction of the stator yoke by combining all branch windings, so that the magnetic tension between the stator and the rotor is balanced, the vibration of the motor is reduced, the noise of the motor is further effectively reduced, and the use experience of a user is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a power source device according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the explosive structure of FIG. 1;

FIG. 3 is a schematic view of a stator according to an embodiment of the present utility model;

FIG. 4 is a schematic view of the assembled stator teeth, three-phase windings and insulating supports of FIG. 2;

FIG. 5 is a graph showing the variation of the rotational speed and the acceleration of the motor in the test group I and the control group I according to the present utility model;

FIG. 6 is a schematic diagram showing the variation of the rotational speed and the acceleration of the motors in the second test group and the second control group;

FIG. 7 is a schematic view of the insulating support of FIG. 2;

FIG. 8 is a schematic view of the stator yoke of FIG. 2;

FIG. 9 is a schematic view of the stator teeth of FIG. 2;

FIG. 10 is a schematic view of the insulating sleeve of FIG. 2;

FIG. 11 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 12 is a schematic cross-sectional view of the A-A plane of FIG. 11;

FIG. 13 is a schematic view of the housing and circuit board of FIG. 11;

FIG. 14 is a schematic view of a structure in which a first bearing, a sleeve, and a second bearing are all sleeved on a rotating shaft;

fig. 15 is an enlarged schematic view of the portion a in fig. 14.

Reference numerals illustrate:

1000-motor;

100-stator; 110-stator core; 111-a stator yoke; 111 A-A mating recess; 111 b-limit recesses; 112-stator teeth; 112 A-A mating protrusion; 112 b-pole piece; 110 a-stator slots; 120-three-phase windings; 120 a-branch winding; 120 b-linker; 121-a first phase winding; 122-second phase windings; 123-third phase winding;

200-rotor;

300-a circuit board; 310-connecting terminals;

400-insulating support; 410-a body; 410 a-opening; 420-sleeve body; 421-guide; 421 a-relief recess; 420 A-A first section; 420 b-a second section;

500-insulating sleeves; 500 a-mounting slots; 500 b-guide channel; 500 c-limit protrusions; 510-pressing head;

600-shell; 600 a-mounting cavity; 600 b-relief holes; 610-outer sleeve;

700-rotating shaft; 700 a-limiting shaft shoulders; 700b, a glue groove; 710—a first bearing; 720-shaft sleeve; 730-a second bearing;

2000-power source device;

2100—work piece.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. The utility model will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

In the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present utility model.

The utility model provides a motor, which is applied to cleaning equipment, wherein a plurality of branch windings of each phase winding of a stator adopt a winding mode of spacing one stator tooth, and then the setting of one stator tooth is sequentially staggered along the circumferential direction of a stator yoke by combining all branch windings, so that the magnetic tension between a stator and a rotor is balanced, the vibration of the motor is reduced, the noise of the motor is further effectively reduced, and the use experience of a user is improved.

Referring to fig. 1 and 2, in an embodiment of the present utility model, a motor 1000 includes a stator 100, a rotor 200, and a circuit board 300.

The stator 100 includes a stator core 110 and a three-phase winding 120, the stator core 110 includes a stator yoke 111 arranged in a ring shape and a plurality of stator teeth 112, the plurality of stator teeth 112 are arranged on an inner peripheral wall of the stator yoke 111 at intervals along a circumferential direction of the stator yoke 111, and tooth roots of the stator teeth 112 are detachably connected with the inner peripheral wall of the stator yoke 111; stator slots 100a are formed between two adjacent stator teeth 112, and each stator tooth 112 extends in the radial direction of the stator yoke 111. The plurality of stator teeth 112 are disposed in the same structure, and the plurality of stator teeth 112 are disposed at uniform intervals, so that magnetic tension between the stator 100 and the rotor 200 is balanced. In other embodiments, the plurality of stator teeth 112 may be configured differently, and the plurality of stator teeth 112 may be configured at non-uniform intervals.

Referring to fig. 3 and 4, each of the three-phase windings 120 includes a plurality of branch windings 120a arranged at intervals along the circumferential direction of the stator yoke 111, one stator tooth 112 is spaced between two adjacent branch windings 120a of each phase winding, each branch winding 120a is wound on two adjacent stator teeth 112, all the branch windings 120a are sequentially staggered by one stator tooth 112 along the circumferential direction of the stator yoke 111, and each stator tooth 112 is wound by two branch windings 120a of different phases. The plurality of branch windings 120a corresponding to each phase winding are wound by a wire, so that the plurality of branch windings 120a corresponding to each phase winding are conveniently connected in sequence.

In this embodiment, the stator core 110 includes six stator teeth 112, six stator slots 100a are formed between the six stator teeth 112, and each phase winding includes two branch windings 120a, so that winding of each phase winding is facilitated.

Specifically, the stator teeth 112 are divided into an inner section and an outer section connected to the inner section along the radial direction of the stator yoke 111, one end of the outer section far from the proximal section is connected to the inner circumferential wall of the stator yoke 111, the three-phase winding 120 includes a first phase winding 121, a second phase winding 122 and a third phase winding 120, two windings 120a of the first phase winding 121 and two windings 120a of the second phase winding 122 are wound on the inner section of the corresponding stator teeth 112, the two windings 120a of the second phase winding 122 are correspondingly positioned on the outer sides of the two windings 120a of the first phase winding 121, the two windings 120a of the third phase winding 120 are wound on the outer section of the corresponding stator teeth 112, and each winding 120a of the third phase winding 120 is positioned on the outer sides of one winding 120a of the first phase winding 121 and one winding 120a of the second phase winding 122. The arrangement is such that the two windings 120a of each phase winding are located at the same position of the corresponding stator teeth 112 to facilitate winding of each phase winding.

The first phase winding 121, the second phase winding 122, and the third phase winding 120 are all electrically connected to the circuit board 300, i.e., each phase winding is electrically connected to the circuit board 300 through the sub-winding 120 a. Specifically, each of the three-phase windings 120 is provided with a tab 120b at both ends (end-to-end and end-to-end) in the circumferential direction of the stator yoke 111, and two tabs 120b of each phase winding are electrically connected to the tabs 120b of the other two different phases, respectively. The arrangement is such that the three-phase windings 120 are connected using a delta connection, which helps to increase the power of the motor 1000. Further, the circuit board 300 is provided with three connection terminals 310, and the six contacts 120b are divided into three contact groups, and the contacts 120b of two different phases of each contact group are connected by corresponding connection terminals 310, so as to facilitate connection of the contacts 120b to the circuit board 300.

In other embodiments, the in-phase branch windings 120a may be connected in parallel or in series to form a phase winding, and the first phase winding 121, the second phase winding 122 and the third phase winding 123 may be connected in parallel or in series to form a three-phase winding 120; the three-phase windings 120 may also be connected using a star connection.

Therefore, in the technical scheme of the utility model, the plurality of branch windings 120a of each phase winding of the stator 100 are wound by spacing one stator tooth 112, and then all the branch windings 120a are combined to sequentially stagger the setting of winding one stator tooth 112 along the circumferential direction of the stator yoke 111 and the two branch windings 120a of different phases of each stator tooth 112, so that the magnetic tension between the stator 100 and the rotor 200 can be balanced, the vibration of the motor 1000 can be reduced, the noise of the motor 1000 can be further effectively reduced, and the use experience of a user can be improved. In addition, by setting that the tooth root of each stator tooth 112 is detachably connected with the inner peripheral wall of the stator yoke 111, when the three-phase winding 120 is wound by the wire, each stator tooth 112 is firstly detached from the stator yoke 111, then the three-phase winding 120 is formed by winding the plurality of stator teeth 112 by the wire, and finally each stator tooth 112 is mounted back to the stator yoke 111, so that the three-phase winding 120 can be conveniently formed by the wire winding.

The plurality of stator teeth 112 are fixed together, and thus, the plurality of stator teeth 112 can be assembled and disassembled together, and the plurality of stator teeth 112 can be simultaneously held to perform winding of the three-phase winding 120. In view of this, referring to fig. 1 to 4, and fig. 7, in order to fix the plurality of stator teeth 112 together, in an embodiment of the present utility model, the motor 1000 further includes an insulating bracket 400, and the insulating bracket 400 includes a main body 410 and a plurality of sleeves 420 that are annularly disposed; the inner peripheral wall portion of the main body 410 is penetrated to form a plurality of openings 410a arranged at intervals along the circumferential direction thereof, a plurality of sleeve bodies 420 are arranged on the outer peripheral wall of the main body 410 at intervals along the circumferential direction of the main body 410, each sleeve body 420 is communicated with the corresponding opening 410a, and each sleeve body 420 is sleeved on the corresponding stator tooth 112. By setting the insulating holder 400 in this manner, the plurality of stator teeth 112 can be fixed together. When winding the wire, the insulating bracket 400 is held first, all the stator teeth 112 are detached from the stator yoke 111, then the three-phase windings 120 are formed by winding the wire, and all the stator teeth 112 are assembled back to the stator yoke 111, so that the wire is convenient to wind. Furthermore, the insulating holder 400 is also capable of effectively insulating the three-phase winding 120 from the stator teeth 112.

In other embodiments, the tips of two adjacent stator teeth 112 may be directly connected together; it is also possible that adjacent stator teeth 112 are fixed by other connecting structures.

In order to test the noise reduction effect of the motor 1000 in the present utility model, a first test group, a second test group and a second test group are provided, and the first test group and the second test group are both 135# motors, which is different in that the stator of the motor in the first test group adopts the stator of the motor in the present embodiment, and is constructed as a six-slot two-pole motor, the stator of the motor in the first test group includes a stator core and three stator teeth, the stator core includes a stator yoke and three stator teeth, the three stator teeth are disposed at intervals along the circumferential direction of the stator yoke in the inner circumferential wall of the stator yoke, and the three stator teeth are correspondingly wound with the three stator teeth to form the three-slot two-pole motor. The difference between the test group II and the test group I is that the test group II adopts a 137# motor, and the difference between the control group II and the control group I is that the control group II adopts a 137# motor. And detecting steady-state acceleration (g) of the motors in the first test group, the first control group, the second test group and the second control group by adopting other detection devices such as an acceleration sensor. The test results are shown in the following table:

as can be seen from the above table, compared with the first control group, the steady-state acceleration of the first test group is significantly lower than the steady-state acceleration of the first control group in the low and medium gear, and the steady-state acceleration of the second test group is significantly lower than the steady-state acceleration of the second control group; in the high gear, the steady-state acceleration of the first test group is basically equivalent to that of the first control group, and the steady-state acceleration of the second test group is basically equivalent to that of the second control group. And further proves that the motor 1000 provided by the utility model can effectively reduce steady acceleration, namely effectively reduce noise, in low gear and medium gear.

And detecting the change relation of the rotation speed and the acceleration (g) of the motors in the first test group, the first comparison group, the second test group and the second comparison group by adopting other detection devices such as a rotation speed sensor, an acceleration sensor and the like. The test results are shown in fig. 5 and 6 below. As can be seen from fig. 5, in comparison with the first control group, the first test group had no formants at 50000 rpm, the second-order ramp-up curve of the first test group was significantly reduced, thereby eliminating formants at 50000 rpm and improving vibration of the motor 1000. As can be seen from fig. 6, the comparison result of the second test group and the second control group is the same as the comparison result of the first test group and the first control group. Further, it is proved that the motor 1000 provided by the utility model can effectively reduce the acceleration during the acceleration process, namely effectively reduce noise.

Referring to fig. 7 to 9, there are various manners of detachably connecting the stator teeth 112 and the stator yoke 111, in an embodiment of the utility model, a plurality of inserting concave portions 111a are disposed on an inner circumferential wall of the stator yoke 111 at intervals along a circumferential direction of the inner circumferential wall, inserting convex portions 112a are disposed at one end of each stator tooth 112 away from the rotor 200, and each inserting convex portion 112a is inserted into and matched with a corresponding inserting concave portion 111a along an axial direction of the stator yoke 111. In this way, when the stator teeth 112 are mounted to the stator yoke 111, the insulating bracket 400 is held by hand, and the insertion convex portions 112a of each stator tooth 112 are inserted into the corresponding insertion concave portions 111a, so that the mounting of the stator teeth 112 can be completed; when the stator teeth 112 are detached from the stator yoke 111, the insulating bracket 400 is held by hand, and the insertion convex portions 112a of each stator tooth 112 are pulled out from the corresponding insertion concave portions 111a, so that the stator teeth 112 can be detached.

The connection between the insertion convex portion 112a and the stator teeth 112 is various, the insertion convex portion 112a and the stator teeth 112 may be fixedly connected, such as bonding, ultrasonic welding, etc., the insertion convex portion 112a and the stator teeth 112 may be detachably connected, such as threaded connection, snap connection, insertion, etc., and the insertion convex portion 112a and the stator teeth 112 may be integrally formed. In other embodiments, the manner of detachable connection of the stator teeth 112 to the stator yoke 111 may also be set with reference to the manner of detachable connection described above.

Specifically, the insertion concave portion 111a is provided as an insertion passage extending in the axial direction of the stator yoke 111, and the insertion convex portion 112a is provided as an insertion block fitted with the insertion passage, so that the insertion concave portion 111a and the insertion convex portion 112a are formed easily. In other embodiments, two limiting bars extending along the axial direction of the inner circumferential wall of the stator yoke 111 may be provided, and the two limiting bars and the stator yoke 111 may be surrounded to form the insertion recess 111a.

Further, after the winding of the three-phase winding 120 is completed, each of the plugging convex portions 112a is pressed together with the corresponding plugging concave portion 111a in an interference manner, so as to enhance the fitting strength of each of the plugging convex portions 112a and the corresponding plugging concave portion 111a.

Referring to fig. 8 and 9, it is considered that since the wall thickness of the stator yoke 111 is thin, the stator yoke 111 is easily pressed outward when the insertion convex portion 112a is engaged with the insertion concave portion 111a, thereby affecting the cylindricity of the outer periphery of the stator yoke 111. In view of this, in order not to affect the cylindricity of the outer periphery of the stator yoke 111, in an embodiment of the present utility model, the width of each insertion protrusion 112a is larger than the width of the corresponding stator tooth 112, and the width of the position where each stator tooth 112 is connected to the corresponding insertion protrusion 112a is tapered from the stator yoke 111 to the rotor 200, and the width is the length in the circumferential direction of the stator tooth 112. With this arrangement, the pressing force applied from the insertion convex portion 112a to the insertion concave portion 111a can be effectively reduced, and the cylindricity of the outer periphery of the stator yoke 111 can be further not affected.

Referring to fig. 7 to 10, in order to be able to insulate the three-phase winding 120 from the stator yoke 111, in an embodiment of the present utility model, the motor 1000 further includes an insulation sleeve 500, an outer circumferential wall of the insulation sleeve 500 is provided with a mounting groove 500a extending along a circumferential direction thereof, an inner circumferential wall of the insulation sleeve 500 is provided with a plurality of guide channels 500b arranged at intervals along the circumferential direction thereof, each guide channel 500b is provided extending along an axial direction of the insulation sleeve 500, each guide channel 500b is communicated with the mounting groove 500a, and each guide channel 500b is provided to partially overlap the mounting groove 500a in a radial direction of the insulation sleeve 500; the stator yoke 111 is fitted with the mounting groove 500a, and each insertion recess 111a is located in a portion where the corresponding guide channel 500b overlaps with the mounting groove 500a, so that each insertion protrusion 112a can be inserted into and fitted with both the corresponding guide channel 500b and the corresponding insertion recess 111a.

Through the above technical solution, by virtue of the setting of the insulating sleeve 500, not only the three-phase winding 120 and the stator yoke 111 can be effectively insulated, but also the insertion convex portion 112a can be inserted and matched with the insertion concave portion 111a along the axial direction of the stator yoke 111 by virtue of the setting of the guide channel 500 b. When each of the insertion convex portions 112a is inserted into the corresponding insertion concave portion 111a, each of the insertion convex portions 112a is inserted into the corresponding guide channel 500b, and is inserted into the corresponding insertion concave portion 111a.

It is understood that the lengths of the portions of the respective guide channels 500b overlapping the mounting grooves 500a in the radial direction of the stator yoke 111 may be the same or different. The longer the portion of each guide channel 500b overlapping the mounting groove 500a in the radial direction of the stator yoke 111, the longer the length of each insertion recess 111a in the radial direction of the stator yoke 111, the higher the insertion strength between each insertion recess 111a and the corresponding insertion protrusion 112a, and the higher the fixing strength between the stator yoke 111 and the stator teeth 112. Therefore, in practical applications, the length of the portion of each guide channel 500b overlapping the mounting groove 500a in the radial direction of the stator yoke 111 should be as large as possible, and this length is exemplified by other length values of 0.5mm, 1.0mm, 1.5mm, and the like.

Further, the insulating sleeve 500 is provided with three pressing heads 510, and the three pressing heads 510 are correspondingly in press fit with the three connectors 310 on the circuit board 300 so as to press the three connector groups into the corresponding connectors 310, thereby facilitating the fixing of the connectors 120b of the three-phase winding 120.

Referring to fig. 8 and 10, if the stator yoke 111 is directly sleeved in the mounting groove 500a, the stator yoke 111 is easily biased in the circumferential direction due to the external force, because the stator yoke 111 is not limited in the circumferential direction. In view of this, in order to limit the stator yoke 111 in the circumferential direction, to avoid the stator yoke 111 from being biased in the circumferential direction by an external force, in an embodiment of the present utility model, the groove wall of the mounting groove 500a is provided with a limit protrusion 500c, and the inner circumferential wall of the stator yoke 111 is provided with a limit recess 111b that mates with the limit protrusion 500 c. By the cooperation of the limit protruding portion 500c and the limit recessed portion 111b, the stator yoke 111 can be limited in the circumferential direction, and the stator yoke 111 is prevented from being biased in the circumferential direction by an external force.

Further, each sleeve 420 is provided with two guiding portions 421, the two guiding portions 421 of each sleeve 420 are in plug-in fit with the corresponding guiding channels 500b, and each plug-in protrusion 112a is located between the two guiding portions 421 of the corresponding sleeve 420. So configured, when the insertion protrusion 112a is inserted into the corresponding guide channel 500b, the guide portion 421 can perform a guiding function, so as to facilitate the insertion of the insertion protrusion 112a into the corresponding guide channel 500 b.

Referring to fig. 7, in an embodiment of the present utility model, a side of each guiding portion 421 facing away from the main body 410 is provided with a recess 421a, and each recess 421a is disposed through at two axial ends of the main body 410. When each of the insertion convex portions 112a is inserted and matched with the corresponding guide channel 500b and the corresponding insertion concave portion 111a, the avoiding concave portion 421a can communicate the insertion position of each of the insertion convex portions 112a and the corresponding insertion concave portion 111a with the external environment, so that air in the external environment can flow to the insertion position of the insertion convex portion 112a and the insertion concave portion 111a, and the insertion position of the insertion convex portion 112a and the insertion concave portion 111a is cooled. The relief recess 421a can reduce the contact area between the guide portion 421 and the guide passage 500b, thereby facilitating insertion of the guide portion 421 into the corresponding guide passage 500 b.

Referring to fig. 7, in an embodiment of the present utility model, a pole piece 112b is disposed at an end of each stator tooth 112 away from the stator yoke 111; the pole shoe 112b has an arc surface on a side away from the stator teeth 112, the arc surface is used to cooperate with the rotor 200, and a gap is formed between the arc surface and the rotor 200, so that the rotor 200 can rotate relative to the stator 100. Each sleeve body 420 comprises a first section 420a and a second section 420b connected with the first section 420a and the main body 410, the inner diameter of the second section 420b is larger than that of the first section 420a, each first section 420a is sleeved on the corresponding stator tooth 112, each second section 420b is sleeved on the corresponding pole shoe 112b, and each plug convex part 112a is abutted with one end, away from the corresponding second section 420b, of the corresponding first section 420 a. By doing so, the fixing strength of each stator tooth 112 and the corresponding sleeve 420 can be enhanced.

It will be appreciated that, since the width of the pole piece 112b and the width of the insertion protrusion 112a are both larger than the width of the stator teeth 112, at least one of the pole piece 112b and the stator teeth 112 may be configured to be detachable during the actual assembly process, so as to complete the assembly of the stator teeth 112, the pole piece, and the insertion protrusion 112a with the corresponding sleeve 420; the stator teeth 112, the pole shoes 112b, and the insertion protruding portions 112a may be integrally formed, and the insulating holder 400 may be molded by casting with a mold on the basis of the stator teeth 112, the pole shoes 112b, and the insertion protruding portions 112a.

Referring to fig. 1, in an embodiment of the utility model, the motor 1000 further includes a housing 600 and a rotating shaft 700, the housing 600 has a mounting cavity 600a, a cavity wall portion of the mounting cavity 600a is penetrated to form a yielding hole 600b, the stator 100 and the rotor 200 are both disposed in the mounting cavity 600a, the rotating shaft 700 is rotatably mounted in the mounting cavity 600a and connected with the rotor 200, and the rotating shaft 700 is further disposed in alignment with the yielding hole 600b.

Specifically, the rotor 200 is annularly disposed and sleeved and fixed at one end of the rotating shaft 700, one end of the rotating shaft 700 sleeved with the rotor 200 is located in the stator 100, the other end of the rotating shaft 700 extends out from the abdication hole 600b, and the rotating shaft 700 is in rotating fit with the abdication hole 600b. This arrangement makes the installation of the rotation shaft 700 convenient. In other embodiments, the shaft 700 may be rotatably mounted on a wall of the mounting cavity 600a facing the relief hole 600b.

Referring to fig. 1, 2 and 11 to 15, in an embodiment of the utility model, a limit shoulder 700a extending along a circumferential direction of an outer circumferential wall of the rotating shaft 700 is protruding; the motor 1000 further includes a first bearing 710, a shaft sleeve 720 and a second bearing 730 sequentially sleeved on the outer peripheral wall of the rotating shaft 700, one end, away from the shaft sleeve 720, of the first bearing 710 abuts against the limiting shaft shoulder 700a, the outer peripheral wall of the first bearing 710, the outer peripheral wall of the shaft sleeve 720 and the outer peripheral wall of the second bearing 730 are matched with the outer peripheral wall of the yielding hole 600b, and the shaft sleeve 720 provides a pretightening force for the outer ring end face of the first bearing 710 and the outer ring end face of the second bearing 730. By the arrangement, the pre-tightening stability of the first bearing 710 and the second bearing 730 on the rotating shaft 700 is improved, and the coaxiality of the assembly of the first bearing 710 and the second bearing 720 is ensured, so that the working stability and reliability of the rotor 200 are improved, the noise is smaller, and the service life is longer.

Referring to fig. 14 and 15, a glue groove 700b is formed at a position where the outer peripheral wall of the rotating shaft 700 is aligned with the second bearing 730, so that when the second bearing 730 is fixed, an adhesive is added to the glue groove 700b, and then the second bearing 730 is sleeved on the rotating shaft 700, so that the inner ring of the second bearing 730 is adhered and fixed on the rotating shaft 700 by the adhesive, and further the second bearing 730 is adhered and fixed on the rotating shaft 700 by the adhesive. In other embodiments, the second bearing 730 may be fixed by directly coating an adhesive on a corresponding position of the outer peripheral wall of the rotating shaft 700 or on the inner peripheral wall of the inner ring of the second bearing 730.

Referring to fig. 12 and 13, in an embodiment of the present utility model, a housing 600 is formed with an outer hub 610 communicating with a mounting cavity 600a, and an inside of the outer hub 610 is formed as a relief hole 600b. The arrangement facilitates corresponding fixation of the outer peripheral wall of the first bearing 710, the outer peripheral wall of the sleeve 720, and the outer peripheral wall of the second bearing 730.

Referring to fig. 1, the present utility model further provides a power source device 2000, where the power source device 2000 includes a working member 2100 and the motor 1000 described above, and the motor 1000 is in driving connection with the working member 2100 to drive the working member 2100 to rotate. The specific structure of the motor 1000 refers to the above embodiment, and since the power source device 2000 adopts all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.

As shown in fig. 1, work implement 2100 is configured as a fan blade and power source device 2000 is configured as a fan assembly. In other embodiments, work member 2100 may also be configured as a roll brush and power source device 2000 may be configured as a roll brush assembly.

The utility model also provides a cleaning device, which comprises a device body (not shown) and the motor 1000, wherein the motor 1000 is arranged on the device body. The specific structure of the motor 1000 refers to the above embodiments, and since the cleaning device adopts all the technical solutions of all the embodiments, at least the cleaning device has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein. As an example and not by way of limitation, the cleaning device may be a cleaning base station or a cleaning robot, which may be a sweeping robot, a sweeping and mopping robot, a window cleaning robot, a hand-held cleaner, a hand-push cleaner, or the like, without being particularly limited thereto.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. Based on the embodiments of the present utility model, those skilled in the art may make other different changes or modifications without making any creative effort, which shall fall within the protection scope of the present utility model.

Claims (15)

1. An electric motor for use in a cleaning apparatus, the motor comprising a stator and a rotor; wherein, the liquid crystal display device comprises a liquid crystal display device,

the stator comprises a stator core and three-phase windings; the stator core comprises a stator yoke which is annularly arranged and a plurality of stator teeth which are circumferentially arranged on the inner peripheral wall of the stator yoke at intervals, and the tooth root of each stator tooth is detachably connected with the inner peripheral wall of the stator yoke;

each of the three-phase windings comprises a plurality of branch windings which are arranged at intervals along the circumferential direction of the stator yoke, one stator tooth is arranged between two adjacent branch windings of each phase winding, each branch winding is wound on two adjacent stator teeth, and all branch windings are staggered with one stator tooth in sequence along the circumferential direction of the stator yoke;

the rotor is arranged between one ends of the plurality of stator teeth far away from the stator yoke.

2. The electric machine of claim 1, wherein the number of stator teeth is six, each of the three phase windings comprising two of the branch windings.

3. The motor of claim 1, wherein the inner peripheral wall of the stator yoke is provided with a plurality of insertion concave portions arranged at intervals along the circumferential direction thereof, insertion convex portions are arranged at tooth roots of the stator teeth, and each insertion convex portion is in insertion fit with the corresponding insertion concave portion along the axial direction of the stator yoke.

4. A motor according to claim 3, wherein the width of each of the insertion projections is larger than the width of the corresponding stator tooth, and the width of the position where each of the stator teeth is connected to the corresponding insertion projection is tapered in a direction from the stator yoke to the rotor, the width being the length in the circumferential direction of the stator tooth.

5. The motor of claim 3, further comprising an insulating sleeve, wherein an outer peripheral wall of the insulating sleeve is provided with a mounting groove extending along the circumferential direction thereof, an inner peripheral wall of the insulating sleeve is provided with a plurality of guide channels arranged at intervals along the circumferential direction thereof, each guide channel extends along the axial direction of the insulating sleeve, each guide channel is communicated with the mounting groove, and each guide channel is partially overlapped with the mounting groove in the radial direction of the insulating sleeve;

the stator yoke is matched with the mounting groove, and each inserting concave part is positioned in a part where the corresponding guide channel and the mounting groove are overlapped, so that each inserting convex part can be inserted and matched with the corresponding guide channel and the corresponding inserting concave part.

6. The motor of claim 5, wherein the wall of the mounting groove is provided with a limit protrusion, and the stator yoke is provided with a limit recess on the inner peripheral wall thereof, which is engaged with the limit protrusion.

7. The motor of claim 5, further comprising an insulating support, wherein the insulating support comprises a main body and a plurality of sleeves, the main body is annularly arranged, a plurality of openings are formed in the inner peripheral wall of the main body in a penetrating manner, the openings are circumferentially arranged at intervals, the sleeves are circumferentially arranged on the outer peripheral wall of the main body at intervals, each sleeve is communicated with the corresponding opening, and each sleeve is sleeved on the corresponding stator tooth;

each sleeve body is provided with two guide parts, the two guide parts of each sleeve body are in plug fit with the corresponding guide channels, and each plug convex part is positioned between the two guide parts of the corresponding sleeve body.

8. The motor of claim 7, wherein each of the guide portions is provided with a recess portion on a side facing away from the main body, and each recess portion is provided so as to penetrate through both ends of the main body in the axial direction.

9. The electric machine of claim 7 wherein each of said stator teeth is provided with a pole piece at an end thereof remote from said stator yoke;

each sleeve body comprises a first section and a second section connected with the first section and the main body, the inner diameter of the second section is larger than that of the first section, each first section is sleeved on the corresponding stator tooth, each second section is sleeved on the corresponding pole shoe, and each inserting convex part is abutted to one end, away from the corresponding second section, of the corresponding first section.

10. The electric machine of claim 1, further comprising an insulating support comprising a body disposed in a ring shape and a plurality of sleeves;

the inner peripheral wall of the main body is penetrated to form a plurality of openings which are distributed at intervals along the circumferential direction of the main body, a plurality of sleeve bodies are arranged on the outer peripheral wall of the main body at intervals along the circumferential direction, each sleeve body is communicated with the corresponding opening, and each sleeve body is sleeved on the corresponding stator tooth.

11. The motor of any one of claims 1 to 10, further comprising a housing having a mounting cavity with a cavity wall portion extending therethrough to form a relief hole, the stator and the rotor being disposed within the mounting cavity, and a shaft rotatably mounted within the mounting cavity and connected to the rotor, the shaft further being disposed in registry with the relief hole.

12. The motor of claim 11, wherein the peripheral wall of the rotating shaft is convexly provided with a limiting shaft shoulder extending along the circumferential direction thereof; the motor is characterized by further comprising a first bearing, a shaft sleeve and a second bearing which are sequentially sleeved on the outer peripheral wall of the rotating shaft, one end of the first bearing, which is far away from the shaft sleeve, is abutted against the limiting shaft shoulder, the outer peripheral wall of the first bearing, the outer peripheral wall of the shaft sleeve and the outer peripheral wall of the second bearing are matched with the outer peripheral wall of the yielding hole, and the shaft sleeve provides a pretightening force for the outer ring end face of the first bearing and the outer ring end face of the second bearing.

13. The motor of claim 12, wherein the outer peripheral wall of the rotating shaft is provided with a glue groove at a position aligned with the second bearing.

14. A power source device comprising a work piece and a motor as claimed in any one of claims 1 to 13, the motor being in driving connection with the work piece to drive the work piece in rotation.

15. A cleaning appliance comprising an appliance body and a motor as claimed in any one of claims 1 to 13, the motor being provided in the appliance body.

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