CN220735291U - Motor assembly of dust collector and dust collector - Google Patents

Abstract

The application provides a motor assembly and dust catcher of dust catcher, wherein, the motor assembly of dust catcher includes: a housing, a cover, and a motor; the shell is provided with a first accommodating cavity, and is provided with two ventilation openings which are respectively communicated with the first accommodating cavity; the cover body is arranged in the first accommodating cavity and comprises an outer cover body and an inner cover body positioned in the outer cover body, a second accommodating cavity is formed in the inner cover body, the motor is arranged in the second accommodating cavity, an air channel is formed between the outer cover body and the inner cover body in an enclosing mode, a first through-flow opening communicated with the inner part of the inner cover body and the air channel is formed in the inner cover body, and a second through-flow opening communicated with the air channel and the first accommodating cavity is formed in the outer cover body; wherein the first and second flow-through openings are staggered with each other in the axial direction of the motor, and at least one of the first and second flow-through openings and the vent are staggered with each other in the axial direction of the motor. By the aid of the technical scheme, the problem that noise is large when the dust collector in the related technology is used can be effectively solved.

Description

Motor assembly of dust collector and dust collector

Technical Field

The application relates to the field of small household appliances, in particular to a motor assembly of a dust collector and the dust collector.

Background

The dust collector is a small household appliance commonly used in life of people, can generate air flow through the motor, and sucks dust and the like into the dust bag through the dust collection head to realize the cleaning effect.

Because the motor can produce noise when starting, has influenced user's use experience, therefore the dust catcher in the correlation technique generally sets up the amortization cotton in the periphery of motor to reduce the noise of dust catcher.

However, the noise reduction effect of the arrangement mode is limited, and the temperature rise of the motor is easy to cause, so that the service life of the motor is influenced.

Disclosure of Invention

The application provides a motor assembly of a dust collector and the dust collector for solving the problem of large noise when the dust collector in the related art is used.

In one aspect, the present application provides a motor assembly of a vacuum cleaner, comprising: a housing, a cover, and a motor; the shell is provided with a first accommodating cavity, and is provided with two ventilation openings which are respectively communicated with the first accommodating cavity; the motor is arranged in the second accommodating cavity, an air channel is formed between the outer cover body and the inner cover body in a surrounding manner, a first through-flow opening which is communicated with the inner part of the inner cover body and the air channel is formed in the inner cover body, and a second through-flow opening which is communicated with the air channel and the first accommodating cavity is formed in the outer cover body; wherein the first and second flow-through openings are staggered with each other in the axial direction of the motor, and at least one of the first and second flow-through openings and the vent are staggered with each other in the axial direction of the motor.

The motor component of the dust collector increases the length of an airflow circulation path by arranging the air duct between the inner cover body and the outer cover body. The first overflow port and the second overflow port are staggered in the axial direction of the motor, at least one of the first overflow port and the second overflow port and the ventilation opening are staggered in the axial direction of the motor, the length of an airflow circulation path is further increased, the airflow softening effect is achieved, and the problem that the noise of a dust collector in the related art is large in use is solved.

As an alternative embodiment, the two ventilation openings comprise an air inlet and an air outlet, which are offset from each other in the axial direction of the motor.

By the arrangement, the length of the airflow circulation path can be increased, and the effect of reducing noise is achieved.

As an alternative embodiment, the air inlet and the first through-flow opening are offset from each other in the axial direction of the motor; and/or the air outlet and the second through-flow opening are staggered in the axial direction of the motor.

By the arrangement, the length of the airflow circulation path can be further increased, and the noise reduction effect is further achieved.

As an alternative embodiment, the motor has an air suction portion and an air exhaust portion, the air inlet is disposed opposite to the air suction portion of the motor, and the first through-flow port is disposed opposite to the air exhaust portion of the motor.

By the arrangement, the smoothness of air inlet and air outlet of the motor can be improved, and accordingly the flow rate of air flow is guaranteed.

As an alternative embodiment, the casing includes a top casing, a bottom casing opposite to the top casing, and a side casing disposed between the top casing and the bottom casing, where the top casing, the bottom casing, and the side casing enclose a first accommodating cavity, the air inlet is disposed on the bottom casing, and the air outlet is disposed on the top casing.

By the arrangement, the processing difficulty of the shell can be reduced.

As an alternative embodiment, the motor assembly further comprises: damping structure, damping structure fills between motor and the cover body.

So configured, noise can be reduced by reducing the vibration condition of the motor.

As an alternative embodiment, the motor comprises a first end and a second end which are oppositely arranged in the axial direction of the motor, and the damping structure comprises a first damping pad which is clamped between the first end of the motor and the cover body; and/or the damping structure comprises a second damping pad clamped between the second end of the motor and the cover body.

So set up, can be that shock-absorbing structure is better to the fixed effect of motor to noise that produces when reducing motor vibration.

As an alternative embodiment, the damping structure includes a first damping pad, and a first limit structure is disposed between the first damping pad and the first end of the motor so that the first damping pad is in limit fit with the motor.

By the arrangement, the probability of the first shock pad moving can be reduced.

As an alternative embodiment, the damping structure includes a second damping pad, the second damping pad includes a first damping portion and a second damping portion, the first damping portion is clamped between the motor and the inner housing, and the second damping portion is clamped between the motor and the housing.

By the arrangement, the contact area between the second shock pad and the motor can be increased, so that noise generated when the motor vibrates is further reduced.

As an alternative embodiment, the motor assembly further comprises: the noise reduction cotton is filled in the air duct, and shields at least part of the first through flow opening and shields at least part of the second through flow opening.

By the arrangement, the noise can be effectively reduced after the air flow passes through the noise reduction cotton, so that the noise reduction effect is further achieved.

As an alternative embodiment, the outer cover body includes the roof and sets up the bounding wall at the circumferencial direction of roof, and the inner cover body sets up in the bounding wall, roof and top shell butt cooperation, and at least one and the drain pan butt cooperation in bounding wall and the inner cover body, roof, inner cover body and drain pan enclose into the second and hold the chamber, and roof, inner cover body, bounding wall and drain pan enclose into the wind channel.

The arrangement makes the structure of the cover simple and convenient to process.

As an alternative embodiment, the first through-flow openings comprise a plurality of first through-flow openings which are arranged at intervals in the circumferential direction of the inner cover body; the second through-flow openings comprise a plurality of second through-flow openings, and the second through-flow openings are arranged at intervals in the circumferential direction of the outer cover body.

The arrangement can ensure the flow of air flow and further ensure the air quantity of the dust collector.

As an alternative embodiment, the top shell comprises an annular main body part and an annular air outlet cover, the annular main body part is provided with an inner hole, the annular air outlet cover is arranged at the inner hole outlet of the annular main body part, and the air outlet is arranged on the annular air outlet cover; the side shell is connected with the annular main body part through a first fastening structure, the bottom shell comprises a first convex rib which is arranged corresponding to the inner cover body and a second convex rib which is arranged corresponding to the outer cover body, and the side shell is connected with the bottom shell through a second fastening structure.

By the arrangement, the assembly of the shell can be fastened, and the connection of the structures such as the cover body and the motor assembled in the shell and the shell can be fastened.

As an alternative embodiment, the first fastening structure includes a first fixing hole provided on the side case, a second fixing hole provided on the annular body portion, and a screw penetrating into the first fixing hole and the second fixing hole.

By this arrangement, the fastening performance of the top case and the side case can be increased.

As an optional implementation manner, the motor assembly further comprises a second limiting structure arranged between the bottom shell and the cover body, so that the bottom shell and the cover body are detachably connected, and the second limiting structure is arranged between the first protruding rib and the inner cover body and/or between the second protruding rib and the outer cover body.

By the arrangement, the fastening performance of the cover body and the bottom shell can be improved.

In another aspect, the present application provides a vacuum cleaner comprising the motor assembly described above.

Because the motor assembly of this application has the noise to be little, the better advantage of user's use experience, therefore the dust catcher that has it also possesses above-mentioned advantage.

The motor assembly that this application provided includes: the shell is provided with two ventilation openings, one ventilation opening is used for air inlet, and the other ventilation opening is used for air outlet. A first accommodating cavity is formed in the shell, and the cover body is arranged in the first accommodating cavity. The cover body is of a sandwich structure, and specifically comprises an outer cover body and an inner cover body, an interlayer is formed between the inner cover body and the outer cover body, and the interlayer is used as an air duct for air flow. The inner cover body is internally provided with a second accommodating cavity, the motor is arranged in the second accommodating cavity, the inner cover body is provided with a first through flow port, and the outer cover body is provided with a second through flow port. When the motor is started, air flow can enter the motor from one ventilation opening on the shell, then is blown out from the motor to enter the first through-flow opening, enters the air duct from the first through-flow opening, enters the first accommodating cavity from the second through-flow opening, and finally is discharged from the other ventilation opening. In order to increase the length of the airflow passage, the first through-flow opening and the second through-flow opening are staggered in the axial direction of the motor, and at least one of the first through-flow opening and the second through-flow opening and the ventilation opening are staggered in the axial direction of the motor.

In addition to the technical problems, technical features constituting the technical solutions, and beneficial effects caused by the technical features of the technical solutions described above in the embodiments of the present application, other technical problems that can be solved by the cleaning device provided in the present application, other technical features included in the technical solutions, and beneficial effects caused by the technical features will be described in further detail in the detailed description of the present application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

FIG. 1 is a cross-sectional view of a motor assembly of a vacuum cleaner provided in an embodiment of the present application;

FIG. 2 is a schematic view of an exploded view of an angle of a motor assembly of a vacuum cleaner according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of an alternative angular exploded view of the motor assembly of the vacuum cleaner of FIG. 2;

fig. 4 is an exploded view of a housing of a motor assembly of a vacuum cleaner according to an embodiment of the present disclosure;

FIG. 5 is a schematic perspective view of an angle of a housing of a motor assembly of a vacuum cleaner according to an embodiment of the present disclosure;

FIG. 6 is a schematic perspective view of the cover of FIG. 5 at another angle;

fig. 7 is a cross-sectional view of a vacuum cleaner according to an embodiment of the present application.

Reference numerals illustrate:

10-a housing; 11-top shell; 111-an annular body portion; 112-an annular air outlet cover; 1121-an air outlet; 113-a decorative plate; 12-bottom shell; 121-an air inlet; 122-first ribs; 123-second ribs; 13-side shells; 14-a first accommodation chamber; 15-a first fastening structure; 16-a second fastening structure; 20-a cover body; 21-an outer cover; 211-top plate; 212-coaming; 2121-a second flow-through port; 22-an inner housing; 221-a first through-flow port; 23-a second accommodation chamber; 24-air duct; 30-an electric motor; 31-an air suction part; 32-an exhaust part; 40-damping structure; 41-a first shock pad; 42-a second shock pad; 50-a first limiting structure; 60-noise reduction cotton; 70-a second limit structure; 71-a first clamping part; 72-a second clamping part; 90-motor assembly; 100-dust collector.

Specific embodiments thereof have been shown by way of example in the drawings and will herein be described in more detail. These drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments.

First, it should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present application, and are not intended to limit the scope of the present application. Those skilled in the art can adapt it as desired to suit a particular application.

Further, it should be noted that, in the description of the present application, terms such as "upper," "lower," "left," "right," "front," "rear," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or component must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, it should be noted that, in the description of the present application, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; there may be communication between the interiors of the two members. The specific meaning of the terms in this application will be understood by those skilled in the art as the case may be.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The current dust collector can generate noise when in use, and the noise sources mainly comprise two parts, wherein the first part is the noise generated by the air flow flowing in the air duct, and the second part is the noise generated by the vibration of the motor. The second type of noise can be solved by assembling the motor more tightly, but the first type of noise is difficult to avoid. The inventor finds that the speed of the air flow in the flowing process can be reduced by increasing the length of the air duct, so that the air flow is softened, and the noise is reduced.

Based on this, this application provides a motor assembly of dust catcher, through the length of air current flow path, enlarges the air-out area, and then solves the noise big problem when using of dust catcher among the correlation technique.

The motor assembly of the dust collector provided by the embodiment of the application is described below with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of a motor assembly of a vacuum cleaner provided in an embodiment of the present application; FIG. 2 is a schematic view of an exploded view of an angle of a motor assembly of a vacuum cleaner according to an embodiment of the present disclosure; FIG. 3 is a schematic view of an alternative angular exploded view of the motor assembly of the vacuum cleaner of FIG. 2; fig. 4 is an exploded view of a motor assembly of a cleaner according to an embodiment of the present disclosure.

As shown in fig. 1 and 2, the motor assembly of the vacuum cleaner of the present embodiment includes: a housing 10, a cover 20 and a motor 30.

Wherein the housing 10 has a first accommodation chamber 14, and the housing 10 is provided with two ventilation openings respectively communicating with the first accommodation chamber 14; the cover body 20 is arranged in the first accommodating cavity 14, the cover body 20 comprises an outer cover body 21 and an inner cover body 22 positioned in the outer cover body 21, a second accommodating cavity 23 is arranged in the inner cover body 22, the second accommodating cavity 23 is communicated with a ventilation opening, the motor 30 is arranged in the second accommodating cavity 23, an air channel 24 is formed between the outer cover body 21 and the inner cover body 22 in a surrounding manner, a first through-flow opening 221 which is communicated with the inner cover body 22 and the air channel 24 is arranged on the inner cover body 22, and a second through-flow opening 2121 which is communicated with the air channel 24 and the first accommodating cavity 14 is arranged on the outer cover body 21; wherein the first and second through-flow ports 221 and 2121 are offset from each other in an axial direction of the motor 30, and at least one of the first and second through-flow ports and the vent are offset from each other in the axial direction of the motor.

By applying the technical scheme of the embodiment, the motor assembly comprises: the shell 10, the cover 20 and the motor 30 are provided with two ventilation openings, wherein one ventilation opening is used for air inlet, and the other ventilation opening is used for air outlet. The housing 10 is provided with a first accommodating chamber 14 therein, and the cover 20 is provided in the first accommodating chamber 14. The cover 20 has a sandwich structure, and specifically, the cover 20 includes an outer cover 21 and an inner cover 22, and an interlayer is formed between the inner cover 22 and the outer cover 21, and serves as an air duct through which the air flow flows. The inner cover 22 is internally provided with a second accommodating cavity 23, the motor 30 is arranged in the second accommodating cavity 23, the inner cover 22 is provided with a first through flow port 221, and the outer cover 21 is provided with a second through flow port 2121. When the motor 30 is started, the air flow can firstly enter the motor 30 from one ventilation opening on the shell 10, then be blown out from the motor 30 into the first through-flow opening 221, enter the air duct 24 from the first through-flow opening 221, enter the first accommodating cavity 14 from the second through-flow opening 2121, and finally be discharged from the other ventilation opening.

In order to increase the length of the airflow passage, the first through-flow port 221 and the second through-flow port 2121 are staggered in the axial direction of the motor 30, and at least one of the first through-flow port 221 and the second through-flow port 2121 and the ventilation port are staggered in the axial direction of the motor, so that the length of the air duct 24 can be increased, and the length between the ventilation port and the first through-flow port 221 or the length between the second through-flow port 2121 and the ventilation port can be increased, thereby effectively prolonging the flow path of the airflow, reducing the flow velocity of the airflow, generating a softening effect on the flow of the airflow, and further being beneficial to reducing the noise when the dust collector works.

The positions of the air inlet and the air outlet are described below with reference to the accompanying drawings.

With continued reference to fig. 1-4, in one possible embodiment, the two vents include an air inlet 121 and an air outlet 1121, the air inlet 121 and the air outlet 1121 being offset from each other in the axial direction of the motor 30. The arrangement mode is beneficial to prolonging the flow path of the air flow on one hand, and is beneficial to avoiding the mutual interference of the air inlet and the air outlet on the other hand, so that the flow quantity of the air flow is ensured.

Further, in one possible embodiment, the air inlet 121 and the first through-flow opening 221 are offset from each other in the axial direction of the motor 30, so that a distance exists between the air inlet 121 and the first through-flow opening 221, and a certain distance is required to flow after the air flow enters from the air inlet 121 to enter the first through-flow opening 221. Similarly, the air outlet 1121 and the second through-flow port 2121 are staggered in the axial direction of the motor 30, and the air flow from the second through-flow port 2121 needs to flow a certain distance to be discharged from the air outlet 1121.

With continued reference to fig. 1 to 4, in one possible embodiment, the motor 30 has a suction portion 31 and an exhaust portion 32, the air inlet 121 is disposed opposite to the suction portion 31 of the motor 30, and the first through-flow port 221 is disposed opposite to the exhaust portion 32 of the motor 30. In the above structure, the suction portion 31 of the motor 30 and the air inlet 121 are disposed opposite to each other so that the air flow can be smoothly sucked into the motor 30. Similarly, the exhaust part 32 of the motor 30 is opposite to the first through-flow opening 221, so that the air flow blown out from the motor 30 directly enters the air duct 24, and the smoothness of exhaust is ensured.

The specific structure of the housing is described below with reference to the drawings.

With continued reference to fig. 1 to 4, in one possible embodiment, the housing 10 includes a top case 11, a bottom case 12 disposed opposite to the top case 11, and a side case 13 disposed between the top case 11 and the bottom case 12, the top case 11, the bottom case 12, and the side case 13 enclose a first accommodating cavity 14, the air inlet 121 is disposed on the bottom case 12, and the air outlet 1121 is disposed on the top case 11. This arrangement allows for easy machining of the housing 10 and ease of demolding. While also enabling assembly of the motor assembly 90.

Since the noise of the cleaner also originates from the vibration of the motor 30, in order to further reduce the noise of the cleaner, as shown in fig. 1 to 4, in one possible embodiment, the motor assembly further includes a shock absorbing structure 40, and the shock absorbing structure 40 is filled between the motor 30 and the cover 20 to reduce the vibration of the motor 30, thereby reducing the noise.

Specifically, referring to fig. 1 to 4, the motor 30 includes a first end and a second end disposed opposite to each other in an axial direction thereof, and the shock-absorbing structure 40 includes a first shock-absorbing pad 41 interposed between the first end of the motor 30 and the housing 20; the shock absorbing structure 40 includes a second shock pad 42 sandwiched between the second end of the motor 30 and the housing 20.

In the above structure, the first cushion 41 and the second cushion 42 are made of elastic materials. The first and second shock-absorbing pads 41 and 42 can fill the space in the second accommodation chamber 23, reducing the porosity between the motor 30 and the inner housing 22. Specifically, the first and second shock-absorbing pads 41 and 42 are respectively filled at both ends of the motor 30, effectively reducing the vibration frequency and vibration amplitude of the motor 30, thereby reducing noise. In addition, the first and second shock-absorbing pads 41 and 42 do not completely wrap the motor 30, which helps to reduce the temperature rise of the motor to extend the service life of the motor 30.

Of course, in other embodiments not shown in the figures, the shock absorbing structure may also comprise only the first shock absorbing pad or only the second shock absorbing pad.

Specifically, as shown in fig. 1, a first limiting structure 50 is disposed between the first shock pad 41 and the first end of the motor 30 to make the first shock pad 41 in a limiting fit with the motor 30. The first limiting structure 50 can increase the fastening degree of the first end of the motor 30 and the first shock pad 41, and prevent the first shock pad 41 from moving due to the vibration of the motor.

Specifically, the first limiting structure 50 includes a limiting rib disposed on one of the first end of the motor 30 and the first shock pad 41, and a limiting groove disposed on the other of the first end of the motor 30 and the first shock pad 41, where the limiting rib is inserted into the limiting groove. Illustratively, a stop rib is provided at a first end of the motor 30 and a stop slot is provided on the first shock pad 41.

In order to increase the contact area between the shock pad and the motor 30, a better shock absorbing effect is achieved, as shown in fig. 1, the second shock pad 42 includes a first shock absorbing portion and a second shock absorbing portion, the first shock absorbing portion is sandwiched between the motor 30 and the inner housing 22, and the second shock absorbing portion is sandwiched between the motor 30 and the housing 10.

In the above structure, the second shock pad 42 can be simultaneously contacted with the side portion and the second end of the motor 30, effectively increasing the contact area of the second shock pad 42 with the motor 30.

In addition, the opening of the inner casing 22 is opposite to the housing 10, so the second shock pad 42 includes a first shock absorbing portion filled between the inner casing 22 and the motor 30 and a second shock absorbing portion filled between the housing 10 and the motor 30, so that the motor 30 is tightly connected with the inner casing 22 and the housing 10, and noise generated when the motor 30 vibrates is further reduced.

Specifically, as shown in fig. 1 and 2, the opening of the inner housing 22 is opposite to the bottom case 12 of the housing 10, the first damper portion is interposed between the motor 30 and the inner housing 22, and the second damper portion is interposed between the motor 30 and the bottom case 12.

It should be noted that, the cover 20 can be assembled in the housing 10, and after the assembly, the second shock pad 42 is sandwiched between the bottom shell 12 and the inner cover 22, so as to fix the second shock pad 42.

To further reduce noise, as an alternative embodiment, the motor assembly further includes noise reduction cotton 60, the noise reduction cotton 60 is filled in the air duct 24, and the noise reduction cotton 60 shields at least part of the first through-flow port 221 and shields at least part of the second through-flow port 2121.

In the above structure, the noise reduction cotton 60 is filled in the air duct 24 to help reduce noise when air flows in the air duct. The noise reduction cotton 60 has a porous structure, and the pores are used for air circulation. The porosity of the noise reduction cotton 60 can be selected according to the air volume requirement of the dust collector.

The specific structure of the cover is described below with reference to the drawings.

FIG. 5 is a schematic perspective view of an angle of a housing of a motor assembly of a vacuum cleaner according to an embodiment of the present disclosure; fig. 6 is a schematic perspective view of another angle of the cover of fig. 5.

Referring to fig. 1 to 5, the outer cover 21 includes a top plate 211 and a shroud 212 provided in a circumferential direction of the top plate 211, the inner cover 22 is provided in the shroud 212, the top plate 211 is in abutting engagement with the top case 11, at least one of the shroud 212 and the inner cover 22 is in abutting engagement with the bottom case 12, the top plate 211, the inner cover 22, and the bottom case 12 enclose a second accommodation chamber 23, and the top plate 211, the inner cover 22, the shroud 212, and the bottom case 12 enclose an air duct 24. The outer cover 21 and the inner cover 22 are provided with openings, the openings are opposite to the bottom cover 12, the bottom cover 12 is provided with an air inlet 121, the air inlet 121 is communicated with the inner cover 22, and meanwhile, the bottom cover 12 can also seal an interlayer between the outer cover 21 and the inner cover 22 and jointly enclose an air channel 24 with the outer cover 21 and the inner cover 22.

Further, referring to fig. 1, 4 and 5, the first through-flow openings 221 include a plurality of first through-flow openings 221 that are spaced apart in the circumferential direction of the inner housing 22, so that the wind blown out from the motor 30 can be ensured to smoothly enter the air duct 24, and the flow rate of the air flow is increased. Similarly, the second through-flow port 2121 includes a plurality of second through-flow ports 2121 disposed at intervals in the circumferential direction of the housing 21, and the air flow discharged from the first through-flow port 221 flows through the air duct 24 at a certain distance and then enters the first accommodating cavity 14 through the second through-flow port 2121, and is discharged from the air outlet 1121 at the top of the housing 10.

The first through-flow ports 221 and the second through-flow ports 2121 are offset in the axial direction of the motor 30.

The manner of assembling the housing is described below with reference to the drawings.

With continued reference to fig. 1 to 6, the top case 11 includes an annular main body 111 and an annular air outlet cover 112, the annular main body 111 has an inner hole, the annular air outlet cover 112 is disposed at the inner hole of the annular main body 111, and the air outlet 1121 is disposed on the annular air outlet cover 112; the side case 13 is connected to the annular main body 111 by a first fastening structure 15, the bottom case 12 includes a first rib 122 provided corresponding to the inner cover 22 and a second rib 123 provided corresponding to the outer cover 21, and the side case 13 is connected to the bottom case 12 by a second fastening structure 16. The above-mentioned three parts of the shell 10 are respectively processed, so that the shell 10 is easy to be demolded, and the yield is high.

It should be noted that, the top case 11 further includes a decorative plate 113, and the decorative plate 113 can be used for shielding the annular air outlet cover 112 and a part of the annular main body 111, so as to shield the inner hole of the annular main body 111, and make the housing 10 more neat and beautiful. The bottom shell 12 includes a first rib 122 corresponding to the inner cover 22 and a second rib 123 corresponding to the outer cover 21, where the first rib 122 can be matched with the inner cover 22 to clamp the second shock pad 42. The second ribs 123 can be in plug-in fit with the outer cover body 21, so as to reduce the probability of the outer cover body 21 and the bottom shell 12 moving in the radial direction.

In addition, the decorative plate 113 and the annular air outlet cover 112 are assembled in a detachable connection manner, so that the decorative plate 113 and the annular air outlet cover 112 are quickly connected, and the assembly efficiency of the shell 10 is improved. Specifically, the circumferential edge of the annular air outlet cover 112 is provided with a first clamping portion 71, the circumferential edge of the decorative plate 113 is provided with a second clamping portion 72, and the first clamping portion 71 and the second clamping portion 72 are connected quickly through clamping.

It should be noted that, the annular air outlet cover 112 and the annular main body 111 are assembled by detachable connection, so as to further improve the assembly efficiency of the housing 10. Specifically, a plurality of installation long holes are formed in the circumferential direction of the annular air outlet cover 112, installation protrusions corresponding to the installation long holes are formed in the hole wall of the inner hole of the annular main body portion 111, the installation long holes comprise notch sections and limiting sections communicated with the notch sections, the installation protrusions can be inserted into the installation long holes through the notch sections, and the installation protrusions are in limiting fit with the limiting sections through rotation, so that the annular air outlet cover 112 and the annular main body portion 111 are assembled.

Further, referring to fig. 3 and 4, in some embodiments, the top shell 11 and the side shell 13 are connected by a first fastening structure 15. Specifically, the side case 13 is connected to the annular main body portion 111 of the top case 11 by a first fastening structure 15, and the first fastening structure 15 includes a first fixing hole provided on the side case 13, a second fixing hole provided on the annular main body portion 111, and fastening screws penetrating into the first and second fixing holes.

In some embodiments, the bottom case 12 and the side case 13 may be connected by a second fastening structure 16, and in particular, the second fastening structure 16 includes a third fixing hole provided on the side case 13, a fourth fixing hole provided on the bottom case 12, and fastening screws penetrating into the third and fourth fixing holes.

It should be further noted that, the inner wall of the side shell 13 is provided with a mounting post, and the first fixing hole and the second fixing hole are both formed in the mounting post so as to be fixedly connected with the top shell 11 and the bottom shell 12.

Further, referring to fig. 4 and 5, in some embodiments, the motor assembly further includes a second limiting structure 70 disposed between the bottom shell 12 and the cover 20, so that the bottom shell 12 is detachably connected to the cover 20, thereby increasing the tightness of the connection between the bottom shell 12 and the cover 20. The second limiting structure 70 is disposed between the first rib 122 and the inner housing 22 and/or between the second rib 123 and the outer housing 21. Illustratively, the second limiting structure 70 includes a buckle disposed on the bottom shell 12 and a clamping protrusion disposed on the outer housing 21 to achieve a fixed and rotation-stopping fit of the bottom shell 12 and the outer housing 20.

In another aspect, fig. 7 is a cross-sectional view of a vacuum cleaner according to an embodiment of the present disclosure, as shown in fig. 7, the vacuum cleaner includes the motor assembly 90 described above. The motor assembly 90 has the advantages of low noise and good user experience, so the dust collector 100 with the motor assembly has the advantages.

The application provides a motor assembly and dust catcher of dust catcher plays gentle wind's effect through increasing the length of air current circulation path to reduce the noise of dust catcher. Specifically, in order to increase the length of the airflow path, the first through-flow port 221 and the second through-flow port 2121 are staggered in the axial direction of the motor 30, and at least one of the first through-flow port 221 and the second through-flow port 2121 and the ventilation opening are staggered in the axial direction of the motor, so that the length of the air duct 24 can be increased, and the length between the ventilation opening and the first through-flow port 221 or the length between the second through-flow port 2121 and the ventilation opening can be increased, thereby effectively prolonging the circulation path of the airflow, reducing the flow velocity of the airflow, generating a softening effect on the flow of the airflow, and further helping to reduce the noise when the dust collector works.

Finally, it should be noted that: the above embodiments are merely for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (16)

1. A motor assembly for a vacuum cleaner, comprising: a housing (10), a cover (20) and a motor (30);

the housing (10) has a first accommodation chamber (14), the housing (10) being provided with two ventilation openings respectively communicating with the first accommodation chamber (14);

the cover body (20) is arranged in the first accommodating cavity (14), the cover body (20) comprises an outer cover body (21) and an inner cover body (22) arranged in the outer cover body (21), a second accommodating cavity (23) is arranged in the inner cover body (22), the second accommodating cavity (23) is communicated with one ventilation opening, the motor (30) is arranged in the second accommodating cavity (23), an air duct (24) is formed between the outer cover body (21) and the inner cover body (22) in a surrounding mode, the inner cover body (22) is provided with a first overflow port (221) which is communicated with the second accommodating cavity (23) and the air duct (24), and the outer cover body (21) is provided with a second overflow port (2121) which is communicated with the air duct (24) and the first accommodating cavity (14);

wherein the first and second through-flow openings (221, 2121) are offset from each other in an axial direction of the motor (30), and at least one of the first and second through-flow openings (221, 2121) and the vent are offset from each other in the axial direction of the motor.

2. The motor assembly of a vacuum cleaner according to claim 1, wherein the two vents comprise an air inlet (121) and an air outlet (1121), the air inlet (121) and the air outlet (1121) being offset from each other in an axial direction of the motor (30).

3. The motor assembly of a vacuum cleaner according to claim 2, wherein the air inlet (121) and the first through-flow opening (221) are offset from each other in an axial direction of the motor (30); and/or the air outlet (1121) and the second through-flow opening (2121) are offset from each other in the axial direction of the motor (30).

4. The motor assembly of a vacuum cleaner according to claim 2, wherein the motor (30) has a suction portion (31) and a discharge portion (32), the air intake (121) is arranged opposite the suction portion (31) of the motor (30), and the first through-flow opening (221) is arranged opposite the discharge portion (32) of the motor (30).

5. The motor assembly of a vacuum cleaner according to claim 2, wherein the housing (10) comprises a top case (11), a bottom case (12) disposed opposite to the top case (11), and a side case (13) disposed between the top case (11) and the bottom case (12), the top case (11), the bottom case (12), and the side case (13) enclosing the first accommodating chamber (14), the air inlet (121) being disposed on the bottom case (12), and the air outlet (1121) being disposed on the top case (11).

6. The motor assembly of a vacuum cleaner of any one of claims 1 to 5, further comprising:

and the damping structure (40) is filled between the motor (30) and the cover body (20).

7. The motor assembly of a vacuum cleaner according to claim 6, wherein the motor (30) comprises a first end and a second end arranged opposite in an axial direction thereof, the shock absorbing structure (40) comprising a first shock absorbing pad (41) interposed between the first end of the motor (30) and the housing (20);

and/or the shock absorbing structure (40) comprises a second shock absorbing pad (42) clamped between the second end of the motor (30) and the cover body (20).

8. The motor assembly of a vacuum cleaner according to claim 7, wherein the shock absorbing structure (40) comprises the first shock absorbing pad (41), and a first limiting structure (50) is arranged between the first shock absorbing pad (41) and the first end of the motor (30) so as to enable the first shock absorbing pad (41) to be in limiting fit with the motor (30).

9. The motor assembly of claim 7, wherein the shock absorbing structure (40) includes the second shock absorbing pad (42), the second shock absorbing pad (42) includes a first shock absorbing portion and a second shock absorbing portion, the first shock absorbing portion is sandwiched between the motor (30) and the inner housing (22), and the second shock absorbing portion is sandwiched between the motor (30) and the housing (10).

10. The motor assembly of a vacuum cleaner of any one of claims 1 to 5, further comprising:

noise reduction cotton (60), noise reduction cotton (60) fill in wind channel (24), noise reduction cotton (60) shelter from at least part first overflow mouth (221) and shelter from at least part second overflow mouth (2121).

11. The motor assembly of a vacuum cleaner according to claim 5, wherein the outer cover (21) includes a top plate (211) and a shroud (212) provided in a circumferential direction of the top plate (211), the inner cover (22) is provided in the shroud (212), the top plate (211) is in abutting engagement with the top case (11), at least one of the shroud (212) and the inner cover (22) is in abutting engagement with the bottom case (12), the top plate (211), the inner cover (22) and the bottom case (12) enclose the second accommodation chamber (23), and the top plate (211), the inner cover (22), the shroud (212) and the bottom case (12) enclose the air duct (24).

12. A motor assembly for a vacuum cleaner according to any one of claims 1 to 5,

the first through flow openings (221) comprise a plurality of first through flow openings (221), and the first through flow openings (221) are arranged at intervals in the circumferential direction of the inner cover body (22);

the second through-flow openings (2121) include a plurality of second through-flow openings (2121) that are arranged at intervals in the circumferential direction of the outer cover (21).

13. A motor assembly for a vacuum cleaner according to claim 5, wherein,

the top shell (11) comprises an annular main body part (111) and an annular air outlet cover (112), the annular main body part (111) is provided with an inner hole, the annular air outlet cover (112) is arranged at the inner hole outlet of the annular main body part (111), and the air outlet (1121) is arranged on the annular air outlet cover (112);

the side shell (13) is connected with the annular main body part (111) through a first fastening structure (15), the bottom shell (12) comprises a first convex rib (122) which is arranged corresponding to the inner cover body (22) and a second convex rib (123) which is arranged corresponding to the outer cover body (21), and the side shell (13) is connected with the bottom shell (12) through a second fastening structure (16).

14. The motor assembly of a vacuum cleaner according to claim 13, wherein the first fastening structure (15) comprises a first fixing hole provided on the side case (13), a second fixing hole provided on the annular main body portion (111), and a screw penetrating into the first and second fixing holes.

15. A motor assembly for a vacuum cleaner according to claim 13, wherein,

the motor assembly further comprises a second limiting structure (70) arranged between the bottom shell (12) and the cover body (20), so that the bottom shell (12) is detachably connected with the cover body (20), and the second limiting structure (70) is arranged between the first convex rib (122) and the inner cover body (22) and/or between the second convex rib (123) and the outer cover body (21).

16. A vacuum cleaner comprising a motor assembly as claimed in any one of claims 1 to 15.