CN214900377U - Motor assembly and cleaning device - Google Patents

Abstract

The utility model provides a motor element relates to clean electrical apparatus field. This motor element includes: a stator; the output shaft is rotatably connected with the stator, and part of the output shaft is positioned outside the stator; the impeller is fixed on the part of the output shaft, which is positioned outside the stator; and a control member disposed between the impeller and at least a portion of the stator in an extending direction of the output shaft. The utility model also provides a cleaning device. The motor assembly is small in size along the extension direction of the motor output shaft, and the motor assembly is applied to a cleaning device, so that the size of the cleaning device can be reduced, and the cleaning capacity of the cleaning device to a narrow space is improved.

Description

Motor assembly and cleaning device

Technical Field

The utility model relates to a clean electrical apparatus field especially relates to a motor element and a cleaning device.

Background

Be provided with motor element in the cleaning device to make cleaning device can the inhaled air, simultaneously, need set up the control in the motor element, with control to motor element's state, thereby make cleaning device can carry out different clean modes.

The motor output shaft of the motor assembly in the related cleaning device has a large extension direction, resulting in a large size of the cleaning device using the motor assembly, which is poor in cleaning capability for a narrow space.

SUMMERY OF THE UTILITY MODEL

The utility model provides a motor element and a cleaning device to solve the extension direction's of how to reduce motor element's among the cleaning device output shaft size, improve the technical problem of cleaning device to narrow and small space's clean ability.

An embodiment of the utility model provides a motor element, this motor element includes: a stator; an output shaft rotatably connected to the stator, the output shaft partially located outside the stator; the impeller is fixed on the part of the output shaft, which is positioned outside the stator; a control member disposed between the impeller and at least a portion of the stator in an extending direction of the output shaft.

Further, the control piece is provided with a through hole, and the output shaft penetrates through the through hole.

Further, the motor assembly further includes: the control piece is arranged in the stator, and the control piece is arranged in the control piece.

Further, the housing includes: the accommodating part is internally provided with the accommodating cavity and is fixedly connected with the stator; and the first isolating part is connected with the accommodating part and is arranged between the wall surface of the through hole and the output shaft.

Further, the stator includes: the fixing part is fixedly connected with the shell; and the second isolating part is connected with the fixing part and is arranged between the wall surface of the through hole and the output shaft.

Further, the motor assembly further includes: and the bearing is fixedly connected with the output shaft and is positioned between the stator and the impeller along the extension direction of the output shaft.

Further, the control piece is fixedly connected with the stator.

Further, the stator is provided with a clamping piece with a clamping hook, and the control piece is provided with a clamping groove used for clamping with the clamping piece.

Further, along the extending direction of the output shaft, the control member is provided with a first surface and a second surface which are opposite; wherein the first surface abuts the stator and the second surface abuts the housing.

An embodiment of the utility model provides a still provide a cleaning device, this cleaning device includes as above motor element.

The embodiment of the utility model provides a motor element includes the stator, with the stator rotatably be connected the output shaft, with the output shaft be located the outer impeller of part fixed connection of stator to and along the extending direction of output shaft, set up the control between impeller and stator. The control part is arranged between the impeller and the stator along the extending direction of the output shaft, the control part is arranged by utilizing the space between the stator and the impeller, and the control part does not need to be arranged outside the stator, so that the size of the motor assembly along the extending direction of the output shaft is reduced. The motor assembly is applied to the cleaning device, the size of the cleaning device can be reduced, and therefore the cleaning capability of the cleaning device to narrow space is improved. The motor assembly is applied to the cleaning device, so that the size of the cleaning device can be reduced, and the cleaning capability of the cleaning device to a narrow space is improved.

Drawings

Fig. 1 is a schematic structural diagram of a motor assembly according to an embodiment of the present invention;

fig. 2 is an assembly schematic diagram of a stator, an output shaft and a control element in the motor assembly according to the embodiment of the present invention;

fig. 3 is an assembly schematic diagram of a stator, an output shaft, a control element and a housing in an electric machine assembly according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a housing in the motor assembly according to an embodiment of the present invention;

fig. 5 is an assembly view of another stator, an output shaft and a control member in the motor assembly according to the embodiment of the present invention;

fig. 6 is a cross-sectional view of an electric motor assembly according to an embodiment of the present invention;

fig. 7 is an assembly view of another stator, an output shaft and a control member in the motor assembly according to the embodiment of the present invention;

fig. 8 is an assembly schematic diagram of a stator and an output shaft in a motor assembly according to an embodiment of the present invention;

fig. 9 is an assembly view of another stator, an output shaft, a control member, and a housing in an electric machine assembly according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of another casing in the motor assembly according to the embodiment of the present invention;

fig. 11 is an assembly schematic diagram of a stator, an output shaft, a casing, an impeller and a fan housing in a motor assembly according to an embodiment of the present invention;

fig. 12 is an assembly view of a housing and a control member in an electric motor assembly according to an embodiment of the present invention;

fig. 13 is a schematic structural view of a cleaning device according to an embodiment of the present invention.

Description of reference numerals:

1. a cleaning device; 10. a motor assembly; 100. a stator; 110. a fixed part; 120. a second isolation portion; 130. a first clamping structure; 131. a hook; 132. a resilient arm; 133. a bevel; 134. a plane; 135. a limiting boss; 140. a stator body; 150. mounting a through hole; 200. an output shaft; 300. an impeller; 400. a control member; 410. a through hole; 420. a second clamping structure; 430. positioning the through hole; 500. a housing; 510. an accommodating chamber; 520. an accommodating portion; 530. an isolation section; 540. a threaded hole; 550. a mounting seat; 551. a yielding groove; 560. a diffuser vane; 570. wind guide blades; 600. a bearing; 700. a fan housing; 710. a gas collection cavity; 20. a housing; 21. a dust collection inlet; 22. an air outlet; 23. an air suction channel; 30. a roll brush assembly; 40. a separation device; 50. a filtration device; 60. a drive device; 70. a power supply assembly.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various combinations of the specific features of the present invention are not described separately.

In the following description, the term "first/second/so" is used merely to distinguish different objects and does not mean that there is a common or relationship between the objects. It should be understood that the description of the "upper", "lower", "outer" and "inner" directions as related to the orientation in the normal use state, and the "left" and "right" directions indicate the left and right directions indicated in the corresponding schematic drawings, and may or may not be the left and right directions in the normal use state.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. The term "coupled", where not otherwise specified, includes both direct and indirect connections.

In a specific embodiment, the motor assembly may be used in any cleaning device that needs to suck air, for example, a sweeping robot, and the cleaning device may also be a vacuum cleaner, and the motor assembly is used for the sweeping robot, and the structure of the motor assembly is described below as an example, and the type of the cleaning device used for the motor assembly does not affect the structure of the motor assembly.

In some embodiments, as shown in fig. 1, the motor assembly 10 includes: a stator 100, an output shaft 200, an impeller 300, and a control member 400. The stator 100 is disposed around the outside of the output shaft 200 for applying a magnetic force to the output shaft 200 to drive the output shaft 200 to rotate, and for example, the stator 100 may include a stator core formed by laminating a plurality of silicon steel sheets and a winding coil wound around the outside of the stator core, and a varying magnetic field is formed inside the stator core by passing an alternating current through the winding coil, so that the output shaft 200 is driven to rotate by electromagnetic induction. The output shaft 200 is rotatably connected with the stator 100, and a portion of the output shaft 200 is located outside the stator 100, i.e., the output shaft 200 protrudes outside the rotor core.

The impeller 300 is fixed to a portion of the output shaft 200 located outside the stator 100, and rotates together with the output shaft 200. The air pressure at the impeller 300 is less than the atmospheric pressure during rotation of the impeller 300 to drive air flow from the impeller 300 to the stator 100 by the air pressure.

And a control part 400 connected to the stator 100 through a signal line or a wire for controlling a state of current in a winding coil of the stator 100, thereby controlling a rotation speed and a rotation direction of the impeller 300. The control member 400 is disposed between the impeller 300 and at least a portion of the stator 100 in the extending direction of the input/output shaft 200. Compared to the related motor assembly in which the control member is disposed on the opposite side of the stator from the side on which the impeller is disposed, the present embodiment provides the motor assembly 10 in which the control member 400 is disposed between the impeller 300 and at least a portion of the stator 100, the control member 400 is disposed using the space between the stator 100 and the impeller 300, and the control member 400 does not need to be disposed outside the stator 100, thereby reducing the size of the motor assembly 10 in the extending direction of the output shaft 200 (the extending direction of the output shaft 200 is shown by the arrow in fig. 1). Wherein, the extending direction of the output shaft 200 may be a direction in which the output shaft 200 has the largest size.

The embodiment of the utility model provides a motor element includes the stator, with the stator rotatably be connected the output shaft, with the output shaft be located the outer impeller of part fixed connection of stator to and along the extending direction of output shaft, set up the control between impeller and stator. The control part is arranged between the impeller and the stator along the extending direction of the output shaft, the control part is arranged by utilizing the space between the stator and the impeller, and the control part does not need to be arranged outside the stator, so that the size of the motor assembly along the extending direction of the output shaft is reduced. The motor assembly is applied to the cleaning device, the size of the cleaning device can be reduced, and therefore the cleaning capability of the cleaning device to narrow space is improved.

In some embodiments, as shown in fig. 2, the control member 400 is provided with a through hole 410, and the output shaft 200 passes through the through hole 410. The control member 400 is provided with a through hole 410 through which the output shaft 200 passes to reduce the space occupied by the control member 400 perpendicular to the extending direction of the output shaft 200, thereby reducing the size of the motor assembly 10 perpendicular to the extending direction of the output shaft 200. Optionally, the geometric central axis of the control member 400 in the extending direction of the output shaft 200 substantially coincides with the central axis of the extending direction of the output shaft 200, i.e., the through hole 410 is provided at the geometric center of the control member 400 so that the output shaft 200 can pass through the geometric center of the control member 400, thereby further reducing the size of the motor assembly 10 perpendicular to the extending direction of the output shaft 200. Wherein the geometric central axis of the control member 400 in the extending direction of the output shaft 200 substantially coincides with the central axis of the extending direction of the output shaft 200 may refer to that a distance or an included angle is allowed between the geometric central axis of the control member 400 in the extending direction of the output shaft 200 and the central axis of the extending direction of the output shaft 200 due to manufacturing errors and assembly errors, and a maximum value of the distance between the geometric central axis of the control member 400 in the extending direction of the output shaft 200 and the central axis of the extending direction of the output shaft 200 is not greater than a preset threshold value. Illustratively, the predetermined distance may be 5 mm, and it is understood that a cylinder with a radius of 5 mm is formed by taking the geometric center of the control member 400 along the extending direction of the output shaft 200 as an axis, and all portions of the central axis of the extending direction of the output shaft 200 are located in a space surrounded by the cylinder. Optionally, the minimum distance between the hole wall of the through hole 410 and the outer surface of the output shaft 200 is greater than a preset threshold, which may be, for example, 5 mm, so as to reduce the possibility that the output shaft 200 contacts and rubs against the hole wall of the through hole 410 during rotation, and prolong the service life of the output shaft 200 and the control member 400.

In some embodiments, as shown in fig. 3, the motor assembly 10 in fig. 1 further includes a housing 500, the housing 500 has a receiving cavity 510 for receiving the control member 400, and the receiving cavity 510 may have a single-sided opening, and the control member 400 enters the receiving cavity 510 through the opening of the receiving cavity 510. By providing the housing 500 with the receiving cavity 510, that is, by providing the housing 500 around the outside of the control member 400 to protect the control member 400, the possibility of external dust or liquid droplets coming into contact with the control member 400 is reduced, thereby extending the service life of the control member 400. The housing 500 is fixedly connected with the stator 100, optionally, a wall surface of the housing 500 adjacent to the accommodating cavity 510 is fixedly connected with the stator 100, illustratively, the wall surface of the housing 500 adjacent to the accommodating cavity 510 is provided with a threaded hole, the stator 100 is provided with a mounting hole, and a bolt is passed through the mounting hole and screwed into the threaded hole to fixedly connect the housing 500 with the stator 100 through the bolt.

In some embodiments, in conjunction with fig. 3 and 4, the housing 500 includes a receiving portion 520 and a first separating portion 530. The receiving portion 520 has a receiving cavity 510 therein, and the receiving portion 520 is fixedly connected to the stator 100. The first isolating part 530 is fixedly connected with the accommodating part 520 and is arranged between the wall surface of the through hole 410 and the output shaft 200, so that the output shaft 200 is isolated from the wall surface of the through hole 410, contact and friction between the output shaft 200 and the wall surface of the through hole 410 in the rotating process are reduced, the control member 400 is protected, and the service life of the control member 400 is further prolonged. Optionally, a bearing is disposed between the isolation portion 530 and the output shaft 200 to reduce friction between the output shaft 200 and the isolation portion 530, so as to reduce wear of the output shaft 200 and further prolong the service life of the output shaft 200.

In some embodiments, as shown in fig. 5, the stator 100 includes a fixing portion 110 and a second partition portion 120. The fixing portion 110 is fixedly connected with the housing 500, and the second isolating portion 120 is connected with the fixing portion 110 and disposed between the wall surface of the through hole 410 and the output shaft 200, so as to isolate the output shaft 200 from the wall surface of the through hole 410, reduce contact and friction between the output shaft 200 and the wall surface of the through hole 410 in the rotating process, protect the control member 400, and further improve the service life of the control member 400. Optionally, a bearing is disposed between the isolation portion 530 and the output shaft 200 to reduce friction between the output shaft 200 and the isolation portion 530, so as to reduce wear of the output shaft 200 and further prolong the service life of the output shaft 200.

In some embodiments, as shown in fig. 6, the motor assembly 10 further includes a bearing 600, the bearing 600 is fixedly connected to the output shaft 200, and the bearing 600 is located between the stator 100 and the impeller 300 along the extending direction of the output shaft 200, that is, the bearing 600 is disposed on the side of the stator 100 where the impeller 300 is disposed. The bearing 600 is provided with a space between the stator 100 and the impeller 300 in the extending direction of the output shaft 200, and the stator 100 is supported by one side of the stator 100 through the bearing 600, thereby further reducing the size of the motor assembly 10 in the extending direction of the output shaft 200. Alternatively, as shown in fig. 6, the plurality of bearings 600 are provided and spaced apart from each other in the extending direction of the output shaft 200, that is, the plurality of bearings 600 are provided on the side of the stator 100 where the impeller 300 is provided, and the stator 100 is supported by the side of the stator 100 through the plurality of bearings 600, so that the size of the motor assembly 10 in the extending direction of the output shaft 200 is reduced while the stator 100 is more reliably supported. The stator 100 is fixedly connected to the housing 500, and the plurality of bearings 600 support the stator 100, that is, the biasing force between the stator 100 and the housing 500 and the biasing force applied to the stator 100 by the bearings 600 position the stator 100 in the extending direction of the output shaft 200, so that the bearings 600 can be disposed on the side of the stator 100 where the impeller 300 is disposed, and the position of the stator 100 in the extending direction of the output shaft 200 can be reliably positioned.

In some embodiments, as shown in fig. 7, the control member 400 is fixedly connected with the stator 100. It should be noted that the control member 400 may be fixedly connected to the stator 100 by any means, for example, the control member 400 may be fixedly connected to the stator 100 by bolts, and for example, the control member 400 may also be fixedly connected to the stator 100 by a clamping structure. The control member 400 is fixedly connected to the stator 100 by a snap structure, and the control member 400 may be connected to the stator 100 in other manners. As shown in fig. 7, the stator 100 is provided with a first clamping structure 130, the control member 400 is provided with a second clamping structure 420, and the first clamping structure 130 can be clamped with the second clamping structure 420, so as to clamp the stator 100 with the control member 400. Optionally, the first clamping structure 130 may be a clamping piece with a clamping hook, and the second clamping structure 420 may be a clamping groove capable of clamping with the clamping piece; optionally, the first clamping structure 130 may be a clamping slot, and the second clamping structure 420 may be a clamping piece with a clamping hook that can be clamped with the clamping slot. The control member 400 is fixedly connected with the stator 100 through the first clamping structure 130 and the second clamping structure 420, so that the control member 400 can be fixed with the stator 100 without additionally arranging mounting structures such as bolts and screws, and the structure of the motor assembly 10 is simplified.

The principle of the engagement between the clamping member and the slot and the process of the engagement between the clamping member and the slot will be described in detail with reference to fig. 7 and 8, in which the first clamping structure 130 is a clamping member with a hook, and the second clamping structure 420 is a slot capable of being engaged with the clamping member. The stator 100 has a stator body 140 disposed around the outside of the output shaft 200, the fastener (the first fastening structure 130) includes a hook 131 and an elastic arm 132, one end of the elastic arm 132 is fixed to one end of the stator body 140, the elastic arm 132 protrudes out of the end of the stator body 140 along the extending direction of the output shaft 200, a free end of the elastic arm 132 opposite to the end fixedly connected to the stator body 140 is provided with the hook 131, a surface of the hook 131 far away from the stator body 140 is provided with an inclined surface 133, and a surface of the hook 131 close to the stator body 140 is a flat surface 134. A clamping groove (second clamping structure 420) penetrates the control member 400 along the extending direction of the output shaft 200. The stator body 140 may be the fixing portion 110 of the stator 100 in fig. 5.

In the process of engaging the control member 400 with the stator 100, the control member 400 and the stator 100 are moved closer to each other by applying an external force, so that the engaging member is engaged with the engaging groove. Specifically, under the action of an external force, the wall surface of the control member 400 contacts the inclined surface 133 of the hook 131, the inclined surface 133 decomposes the pressure applied by the wall surface to the inclined surface 133 into a tangential force extending along the inclined surface 133 and a positive pressure perpendicular to the inclined surface 133, the elastic arm 132 is elastically deformed under the action of the positive pressure, and meanwhile, under the action of the tangential force, the wall surface of the control member 400 continues to move along the inclined surface 133, so that the control member 400 and the stator 100 continue to approach each other until the hook 131 continues to move to a position where the hook passes through the slot. When the hook 131 moves to the position where it passes through the slot, the urging force of the wall surface of the casing against the hook 131 disappears, and at this time, the elastic arm 132 rebounds by its own elastic force so that the flat surface 134 abuts against the surface of the casing 500 close to the impeller 300. After the flat surface 134 abuts against the surface of the control member 400 close to the impeller 300, the positive pressure between the flat surface 134 of the hook 131 close to the stator 100 and the surface of the control member 400 close to the impeller 300 prevents the hook 131 from being separated from the catching groove, thereby preventing the control member 400 from being separated from the stator 100, i.e., catching the control member 400 with the stator 100. Optionally, the elastic arm 132 is provided with a limit boss 135, the limit boss 135 protrudes from the outer surface of the elastic arm 132 perpendicular to the extending direction of the elastic arm 132, after the hook 131 passes through the slot, the surface of the control member 400 close to the impeller 300 abuts against the plane 134 of the hook 131, and simultaneously, the surface of the control member 400 close to the stator 100 abuts against the limit boss 135, so that the position of the control member 400 along the extending direction of the output shaft 200 is limited between the plane 134 of the hook 131 and the limit boss 135, thereby reducing the vibration of the control member 400 along the extending direction of the output shaft 200, thereby reducing the vibration and noise generated during the operation of the motor assembly 10, and simultaneously, the service life of the control member 400 can be prolonged.

In some embodiments, as shown in fig. 9, the stator 100 and the case 500 are fixedly connected by bolts, and bolts for connecting the stator 100 and the case 500 pass through the control member 400. Specifically, the stator 100 is provided with the mounting through hole 150, the housing 500 is provided with the threaded hole 540, the control member 400 is provided with the positioning through hole 430, the extending directions of the mounting through hole 150, the threaded hole 540 and the positioning through hole 430 are all substantially parallel to the extending direction of the output shaft 200, the bolt sequentially penetrates through the mounting through hole 150, the positioning through hole 430 and is screwed into the threaded hole 540, so that the housing 500 and the stator 100 are fixedly connected through the bolt, and meanwhile, the bolt is further arranged in the middle space of the control member 400 in the direction perpendicular to the extending direction of the output shaft 200, so that the size of the motor assembly 10 perpendicular to the extending direction of the output shaft 200 is reduced. Optionally, the housing 500 is further provided with a mounting seat 550, the mounting seat 550 protrudes out of the wall surface of the housing 500 adjacent to the accommodating cavity 510 along the extending direction of the output shaft 200, the threaded hole 540 penetrates through the mounting seat 550, the mounting seat 550 can be inserted into the positioning through hole 430 and abuts against the hole wall of the positioning through hole 430, and the axis of the threaded hole 540 is substantially coincident with the axis of the mounting through hole 150, so that a bolt can be conveniently screwed into the threaded hole 540 after penetrating through the mounting through hole 150, and meanwhile, the length of the threaded hole 540 is further extended by the provision of the mounting seat 550, so that the stator 100 and the housing 500 are more reliably fixed. Optionally, the positioning through hole 430 communicates with the slot (the second clamping structure 420) to simplify the structure of the control member 400, and facilitate the manufacture of the control member 400. Optionally, the mounting seat 550 is further provided with a yielding groove 551, and the hook 131 penetrates through the clamping groove and then extends into the yielding groove 551, so as to reduce the possibility of assembly interference between the first clamping structure 130 and the mounting seat 550.

In some embodiments, as shown in fig. 10, the casing 500 further includes diffuser vanes 560, and the diffuser vanes 560 are disposed on the wall surface of the casing 500 adjacent to the receiving cavity 510. The diffuser vanes 560 are provided in plurality, the plurality of diffuser vanes 560 are provided on the wall surface of the casing 500 adjacent to the accommodating chamber 510 around the circumferential direction of the extending direction of the output shaft 200, and the joint between the diffuser vane 560 and the wall surface of the casing 500 adjacent to the accommodating chamber 510 is provided in the circumferential direction around the extending direction of the output shaft 200. Meanwhile, the extending direction of the diffuser vane 560 forms a predetermined acute angle with the extending direction of the output shaft 200. During the rotation of the impeller 300, air outside the motor assembly 10 is sucked into the motor assembly 10 and moves from the impeller 300 to the diffuser blades 560 in the direction of the output shaft 200, the flow velocity of the air flow is reduced during the air flow passing through the air passage formed between the adjacent diffuser blades 560, that is, a portion of the dynamic pressure of the air flow is converted into static pressure, and the ability of the air flow to overcome the flow assembly is enhanced, thereby improving the air driving efficiency of the motor assembly 10.

In some embodiments, as shown in fig. 10, at least a portion of the stator 100 in fig. 1 is located in the accommodating cavity 510, and the casing 500 further includes a wind guiding blade 570, where the wind guiding blade 570 is disposed on a wall surface of the casing 500 adjacent to the accommodating cavity 510. Among them, the diffuser vane 560 has a plurality of, the plurality of diffuser vanes 560 are provided to the wall surface of the housing 500 adjacent to the housing chamber 510 around the circumferential direction of the extending direction of the output shaft 200 in fig. 1, and the junction of the diffuser vane 560 and the wall surface of the housing 500 adjacent to the housing chamber 510 is provided to the outside of the stator 100 in the circumferential direction around the extending direction of the output shaft 200. Meanwhile, the air guide vane 570 extends from a wall of the case 500 adjacent to the receiving chamber 510 toward the stator 100 for guiding the air flow to the stator 100, thereby reducing the temperature of the stator 100 by the flow of the air. Optionally, the end of the wind guide vane 570 is connected to the end of the diffuser vane 560, so as to simplify the structure of the casing 500, and further reduce the difficulty in manufacturing the casing 500. Optionally, the air guiding blade 570 and the diffuser blade 560 are in smooth transition, so that kinetic energy loss of the air flow at the joint of the air guiding blade 570 and the diffuser blade 560 is reduced, and the air driving efficiency of the motor assembly 10 is further increased to reduce the temperature of the stator 100 by the air flow.

Optionally, as shown in fig. 11, the motor assembly 10 further includes a wind cover 700, and the wind cover 700 is fixedly connected to the housing 500. The air collecting cavity 710 is formed in the fan housing 700, the impeller 300 is located in the air collecting cavity 710, the impeller 300 rotates to form a negative pressure region inside the air collecting cavity 710, and the air pressure of the negative pressure region is far less than the atmospheric pressure, so that the air outside the air collecting cavity 710 is sucked into the air collecting cavity 710, meanwhile, the fan housing 700 can also concentrate the sucked air in the air collecting cavity 710, the amount of air dissipated in the direction perpendicular to the output shaft 200 is reduced, and the air driving efficiency of the motor assembly 10 is further improved. A first opening and a second opening are respectively formed in two opposite ends of the fan housing 700 along the extending direction of the output shaft 200, and the gas collecting cavity 710 is communicated with the external space of the gas collecting cavity 710 through the first opening; the end of the fan housing 700 provided with the second opening is fixedly connected to the end surface of the casing 500 close to the impeller 300, an air duct is formed between the second opening and the adjacent diffuser blade 560 to communicate the air collecting chamber 710 with the accommodating chamber 510, air entering the air collecting chamber 710 flows from the impeller 300 to the diffuser blade 560 along the extending direction of the output shaft 200, and flows into the accommodating chamber 510 through the air duct formed between the adjacent diffuser blades 560, a part of air flowing into the accommodating chamber 510 continuously flows out of the motor assembly 10 along the extending direction of the output shaft 200, and another part of air flowing into the accommodating chamber 510 flows to the stator 100 in the accommodating chamber 510 under the guidance of the air guiding blade 570, so as to cool the stator 100.

In some embodiments, as shown in fig. 12, the control member 400 is fixedly connected to the housing 500, and it should be noted that the control member 400 may be fixedly connected to the housing 500 by any means, for example, the control member 400 may be fixedly connected to the housing 500 by bolts, for example, the control member 400 may also be fixedly connected to the housing 500 by a clamping structure. Optionally, the control element 400 is provided with a slot, the housing 500 is provided with a clamping member capable of clamping with the slot, and the clamping member is clamped with the slot, so that the control element 400 is clamped with the housing 500, and a process of clamping the control element 400 with the housing 500 is similar to the process of clamping the control element 400 with the stator 100, and is not described herein again.

In some embodiments, along the extending direction of the output shaft 200, the control element 400 has a first face and a second face opposite to each other, wherein the first face abuts against the stator 100, and the second face abuts against the housing 500, that is, along the extending direction of the output shaft 200, the stator 100 and the housing 500 clamp the control element 400 between the stator 100 and the housing 500, and the movement of the control element 400 along the extending direction of the output shaft 200 is limited by the acting force applied to the control element 400 by the stator 100 and the housing 500 along the extending direction of the output shaft 200, so that the control element 400 is limited between the stator 100 and the housing 500 without additionally providing a connecting member or a connecting structure, thereby further simplifying the structure of the motor assembly 10 and reducing the difficulty in manufacturing the motor assembly 10. The stator 100 is in contact with a part of the first surface, and an electronic component for realizing a control function, which may be, for example, a connection terminal of a control signal line, is provided at a portion of the first surface of the control member 400 that is not in contact with the stator 100.

The embodiment of the utility model provides a still provide a cleaning device, this cleaning device can be any cleaning device through the inhaled air, and this cleaning device is through treating near the air suction of clean position inside this cleaning device to will treat in the dust or the rubbish intercommunication air of clean position together inhale this cleaning device, thereby realize treating the cleanness of clean position. The cleaning device can be, for example, a vacuum cleaner, and the cleaning device can also be, for example, a sweeping robot. The structure of the cleaning device and the specific cleaning process will be exemplarily described below by taking the cleaning device as an example of a sweeping robot.

In some embodiments, as shown in fig. 13, the sweeping robot (cleaning device 1) includes: a housing 20 and a motor assembly 10 as shown in any one of figures 1 to 12. The casing 20 has a hollow suction passage 23 therein, and the casing 20 is further provided at a surface thereof with a suction inlet 21 and an exhaust outlet 22, and the suction passage 23 is communicated with an external space of the suction passage 23 through the suction inlet 21 and the exhaust outlet 22. The motor assembly 10 is disposed in the air suction channel 23, and is configured to drive air in an external space of the air suction channel 23 to enter the air suction channel 23 through the dust suction inlet 21, and to flow through the motor assembly 10 along a predetermined air path and then flow out through the air outlet 22. The air sucks the dust and dirt of the portion to be cleaned, which may be, for example, a floor surface to be cleaned, into the suction passage 23 together while the air flows into the suction inlet, thereby cleaning the portion to be cleaned. Wherein, the extending direction of the output shaft 200 of motor element 10 in the edge of fig. 1 is the same with the direction of height of the robot of sweeping the floor, through setting up control 400 between at least part of impeller 300 and stator, has reduced the size of the extending direction of the output shaft 200 of motor element 10, thereby reduced the direction of height's of the robot of sweeping the floor size, and then make the robot of sweeping the floor can get into in the more narrow and small space of high space, make the robot of sweeping the floor can more conveniently clean such as under the bed, tea table etc. the position that is difficult for sweeping.

The structure of the sweeping robot and the sweeping process are exemplarily described below with reference to fig. 13, and in other embodiments, the sweeping robot may have other structures. The sweeping robot may include: motor assembly 10, housing 20, roller brush assembly 30, separating apparatus 40 and filtering apparatus 50. An air suction channel 23 is arranged in the shell 20, the air suction channel 23 is communicated with the outside and the separating device 40, and one end of the air suction channel 23 communicated with the outside is a dust suction inlet 21. An air outlet 22 communicating the inside of the casing 20 with the outside is further provided at the rear end of the casing 20.

During the operation of the sweeping robot, it is driven to move over the surface to be cleaned, simultaneously, the motor assembly 10 performs a vacuum operation, so that the air pressure inside the housing 20 is much smaller than the air pressure outside, thereby forming an air flow from the surface to be cleaned to the inside of the cleaning robot, and dust and garbage on the surface are rolled up by the roll brush assembly 30, mixed into the air flow, is sucked into the interior of the housing 20 through the dust suction inlet 21, and after passing through the suction passage 23, enters a separating device 40, the separating device 40 separates and removes dust from the airflow with dust, the dust and other garbage are collected by the separating device 40, the cleaned airflow after the dust separation enters the motor assembly 10 through the filter device 50, and in the motor assembly 10, the cleaned airflow flows into the motor assembly 10, the motor assembly 10 is cooled by blowing air, then flows out of the motor assembly 10, and finally is discharged to the outside through the air outlet 22. The motor assembly 10 is vacuumized to generate air flow and is matched with the rolling brush assembly 30 to clean dust, the air flow with the dust is sucked into the sweeping robot, then the dust is separated and removed through the separating device 40, finally the clean air flow is discharged into the air, and the cleaning and dust removing work of the sweeping robot on the whole surface to be cleaned is completed through the movement of the sweeping robot.

Optionally, as shown in fig. 13, the sweeping robot further includes a driving device 60 and a power supply assembly 70. The driving device 60 is partially located in the housing 20 and is used for driving the sweeping robot to move on the surface to be cleaned, and the driving device 60 comprises a moving wheel and a driving motor, the driving motor drives the moving wheel to rotate, and the moving wheel rotates to enable the sweeping robot to move on the surface to be cleaned. A power supply assembly 70 is disposed within the housing 20 for providing electrical power to the motor assembly 10, the brush roll assembly 30 and the drive assembly 60.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (10)

1. An electric machine assembly, comprising:

a stator;

an output shaft rotatably connected to the stator, the output shaft partially located outside the stator;

the impeller is fixed on the part of the output shaft, which is positioned outside the stator;

a control member disposed between the impeller and at least a portion of the stator in an extending direction of the output shaft.

2. An electric motor assembly as set forth in claim 1, wherein said control member is provided with a through hole through which said output shaft passes.

3. The motor assembly of claim 2, further comprising:

the control piece is arranged in the stator, and the control piece is arranged in the control piece.

4. The electric machine assembly of claim 3, wherein the housing comprises:

the accommodating part is internally provided with the accommodating cavity and is fixedly connected with the stator;

and the first isolating part is connected with the accommodating part and is arranged between the wall surface of the through hole and the output shaft.

5. The electric machine assembly of claim 4, wherein the stator comprises:

the fixing part is fixedly connected with the shell;

and the second isolating part is connected with the fixing part and is arranged between the wall surface of the through hole and the output shaft.

6. The motor assembly of claim 3, further comprising:

and the bearing is fixedly connected with the output shaft and is positioned between the stator and the impeller along the extension direction of the output shaft.

7. An electric machine assembly according to any of claims 1 to 6, characterised in that the control member is fixedly connected with the stator.

8. An electric motor assembly as set forth in claim 7, wherein said stator is provided with a snap member with a hook, and said control member is provided with a snap groove for snap-fitting with said snap member.

9. The motor assembly of claim 3, wherein the control member has first and second opposing faces in a direction of extension of the output shaft; wherein the first surface abuts the stator and the second surface abuts the housing.

10. A cleaning device, comprising: an electric machine assembly as claimed in any one of claims 1 to 9.

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