Motor unit and vacuum cleaner

Abstract

The present invention relates to a motor unit and a vacuum cleaner, belonging to the technical field of vacuum cleaners, and solves the problem of poor layout of motor units in existing vacuum cleaners. The motor unit of the present invention includes a motor cover and a motor assembly installed in the motor cover, and the motor assembly includes a motor, a sealing sleeve, a gas guide plate, an air outlet filter and a motor control board; the sealing sleeve is wrapped around the air inlet end of the motor; the front end of the gas guide plate is connected to the air outlet port of the motor. In the present invention, the motor is clamped in the motor cover by the front sealing sleeve and the air outlet filter component, and there is no need to use a rear seal, which not only simplifies the fixing method of the motor, but also reduces the processing cost; the air outlet filter is arranged in the motor cover, which can effectively reduce the diameter of the motor unit, thereby reducing the volume of the motor unit, and also reducing the overall size of the vacuum cleaner.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum cleaners, and in particular to a motor unit and a vacuum cleaner. Background Art

[0002] In existing vacuum cleaners, the motor is generally fixed in the motor cover by a front sealing sleeve and a rear sealing member wrapped around the outside of the front end of the motor, and the air outlet filter component is wrapped around the motor cover to filter the gas discharged from the motor cover. This makes the volume of the air outlet filter component larger, which in turn causes the area for mounting the motor unit in the vacuum cleaner to be too large, thereby increasing the overall size of the vacuum cleaner and affecting the overall shape of the vacuum cleaner. Summary of the invention

[0003] In view of the above analysis, an embodiment of the present invention aims to provide a motor unit and a vacuum cleaner, so as to solve the problem of poor layout of the motor unit in the existing vacuum cleaner.

[0004] On the one hand, an embodiment of the present invention provides a motor unit, including a motor cover and a motor assembly installed in the motor cover, the motor assembly including a motor, a sealing sleeve, a gas guide plate, an air outlet filter and a motor control board; the sealing sleeve is wrapped around the air inlet end of the motor; the front end of the gas guide plate is connected to the air outlet port of the motor.

[0005] Furthermore, the front end of the gas guide plate is sealed and connected to the gas outlet port of the motor;

[0006] The gas guide plate surrounds the outer side of the air outlet filter;

[0007] The motor control board is located at the rear end of the motor and is connected to the motor;

[0008] The air outlet filter is arranged in a space surrounded by the motor control board, the gas guide plate and the motor cover;

[0009] The gas guide plate and the motor are arranged to form a gas guide channel, or the gas guide plate alone forms the gas guide channel;

[0010] The inlet of the gas guide channel is communicated with the gas outlet port of the motor, and the outlet of the gas guide channel faces the air outlet filter.

[0011] Furthermore, the outer wall of the sealing sleeve is sealed and connected to the motor cover, and an air inlet hole is opened in the center of the sealing sleeve.

[0012] Furthermore, the motor cover comprises a front cover body and a rear cover body, and the front cover body and the rear cover body are detachably connected.

[0013] Furthermore, the rear cover body is provided with a rear end assembly cavity, and the rear end of the motor, the motor control board, the gas guide plate, and the air outlet filter are assembled in the rear end assembly cavity.

[0014] Furthermore, an air outlet grille portion is provided at the rear end of the rear cover body, and the air outlet grille portion is communicated with the rear end assembly cavity.

[0015] Furthermore, the front end of the air outlet filter is located in the rear end assembly cavity, and the rear end of the air outlet filter is located in the air outlet grid portion.

[0016] Further, the front cover body includes an air collecting portion and a front cover portion, and the front cover portion is located at the rear end surface of the air collecting portion;

[0017] The front cover is provided with a front end assembly cavity, the sealing sleeve and the front end of the motor are assembled in the front end assembly cavity, and the sealing sleeve is sealed and connected to the front end assembly cavity;

[0018] The air collecting part is provided with a through hole which is communicated with the front end assembly cavity, and the through hole corresponds to the air inlet hole of the sealing sleeve.

[0019] On the other hand, an embodiment of the present invention provides a vacuum cleaner, comprising the above-mentioned motor unit, exhaust assembly and shell.

[0020] Further, the motor unit is mounted at the rear end of the housing, and the air outlet grid portion of the motor unit passes through the rear end surface of the housing;

[0021] The exhaust assembly cover is arranged on the air outlet grid portion, and the exhaust assembly is connected to the rear end surface of the shell.

[0022] Further, the exhaust assembly includes an exhaust filter and an exhaust hood;

[0023] The exhaust hood is provided with an exhaust assembly cavity, and the exhaust filter is assembled in the exhaust assembly cavity;

[0024] An exhaust port is arranged on the exhaust hood, and the exhaust port is communicated with the exhaust assembly cavity.

[0025] Furthermore, a nameplate groove is provided on the rear end surface of the exhaust hood, and a positioning portion is provided in the nameplate groove.

[0026] Furthermore, the exhaust filter element is provided with a grid assembly cavity, and the air outlet grid portion is located in the grid assembly cavity.

[0027] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0028] (1) The motor is clamped in the motor cover through the front sealing sleeve and the air outlet filter component, without the need for a rear seal, which not only simplifies the fixing method of the motor but also reduces the processing cost;

[0029] (2) Placing the air outlet filter in the motor cover can effectively reduce the diameter of the motor unit, thereby reducing the volume of the motor unit and the overall size of the vacuum cleaner;

[0030] (3) The gas is directly guided to the outlet filter and the exhaust filter through the gas guide plate and the air outlet grid, respectively, so that the gas filtering effect is better;

[0031] (4) The gas is guided multiple times through the guide groove, the gas guide plate, and the air outlet grid, so that the gas flows more smoothly in the motor unit, which can effectively increase the gas flow rate and thus increase the suction power of the vacuum cleaner;

[0032] (5) By arranging an overlap portion on the front cover body, a connection position is added for the assembly of the dust cup body, thereby improving the connection performance of the dust cup body and preventing the dust cup body from falling off from the dust cup body cavity, thereby preventing the normal operation of the vacuum cleaner from being affected by the falling off of the dust cup body;

[0033] (6) A portion of the air outlet filter is located in the rear cover body and a portion is located in the air outlet grid portion, and the air outlet grid portion is located in the exhaust assembly, which can effectively reduce the length occupied by the motor unit in the housing, thereby reducing the overall length of the vacuum cleaner;

[0034] (7) The nameplate slot at the rear end of the exhaust hood is provided with a positioning portion to facilitate the positioning of the nameplate.

[0035] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0037] Figure 1 is a structural diagram of a motor unit of Embodiment 1;

[0038] Figure 2 is a cross-sectional view of the motor unit of the first embodiment;

[0039] Figure 3 It is a structural diagram of the motor and the gas guide plate of the first embodiment;

[0040] Figure 4 is an exploded view of the motor unit of the first embodiment;

[0041] Figure 5 It is a structural diagram of the motor unit and the exhaust cover assembly of the second embodiment;

[0042] Figure 6An exploded view of the motor unit and the exhaust cover assembly of the second embodiment;

[0043] Figure 7 is a cross-sectional view of the motor unit and the exhaust cover assembly of the second embodiment;

[0044] Figure 8 It is a structural diagram of the exhaust hood of the second embodiment;

[0045] Fig. 9 A partial diagram of the vacuum cleaner of the second embodiment;

[0046] Fig.10 It is a structural diagram of the vacuum cleaner of the second embodiment.

[0047] Reference numerals:

[0048] 1-front cover body; 11-wind collecting part; 111-flat plate; 112-air inlet plate; 113-rib plate; 114-guide groove; 115-axial air inlet; 116-radial air inlet; 117-protrusion; 12-front cover; 121-front end assembly cavity; 122-assembly part; 13-lap joint; 131-assembly groove; 14-recessed part; 141-limiting plate;

[0049] 2-motor assembly; 21-motor; 22-sealing sleeve; 221-air inlet; 23-gas guide plate; 231-U-shaped notch; 24-air outlet filter; 25-motor control board;

[0050] 3-rear cover; 31-rear end assembly cavity; 311-connecting piece; 32-air outlet grid portion;

[0051] 4-exhaust assembly; 41-exhaust filter; 411-grid assembly cavity; 42-exhaust cover; 421-exhaust port; 422-nameplate slot; 423-positioning portion; 424-assembly slot; 43-nameplate sticker; 431-positioning slot;

[0052] 5-housing; 51-assembly protrusion; 52-suction pipe;

[0053] 6-dust collecting cup body; 61-fastening part. DETAILED DESCRIPTION

[0054] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0055] Embodiment 1

[0056] This embodiment provides a motor unit, such as Figure 1-Figure 4As shown, it includes a front cover body 1, a motor assembly 2 and a rear cover body 3, and the motor assembly 2 is installed in the motor cover formed by the front cover body 1 and the rear cover body 3.

[0057] The motor assembly 2 includes a motor 21, a sealing sleeve 22, a gas guide plate 23, an air outlet filter 24 and a motor control board 25. The sealing sleeve 22 is wrapped around the air inlet end of the motor 21; the motor control board 25 is located at the rear end of the motor 21 and is connected to the motor 21 to control the operation of the motor 21; the front end of the gas guide plate 23 is connected to the air outlet port of the motor 21, and the gas guide plate 23 surrounds the outer side of the air outlet filter 24 to quickly guide the gas discharged from the motor 21 to the air outlet filter 24; the air outlet filter 24 is arranged in a space surrounded by the motor control board 25, the gas guide plate 23, and the rear cover 3.

[0058] Compared with the prior art, the motor 21 of this embodiment is clamped in the motor cover by a sealing sleeve 22 at the front end and an air outlet filter 24 at the rear end, and no rear end seal is required, thereby simplifying the fixing method of the motor; by using a gas guide plate 23, the gas exhausted by the motor 21 is quickly guided to the air outlet filter 24, which not only eliminates the rear end seal, but also eliminates the need for the air outlet filter 24 to be arranged around the motor 21, thereby effectively reducing the volume of the motor unit.

[0059] The outer wall of the sealing sleeve 22 is sealed and connected to the front cover body 1 , and an air inlet hole 221 is opened in the center of the sealing sleeve 22 so that the gas flowing into the motor unit from the front cover body 1 can all flow to the motor 21 through the air inlet hole 221 .

[0060] The front end of the gas guide plate 23 is sealed and connected to the air outlet port of the motor 21. The gas guide plate 23 and the motor 21 enclose a gas guide channel, or the gas guide plate 23 forms a gas guide channel alone. The inlet of the gas guide channel is connected to the air outlet port of the motor 21, and the outlet of the gas guide channel faces the air outlet filter 24 to quickly guide the gas discharged from the motor 21 to the air outlet filter 24.

[0061] In this embodiment, the gas guide plate 23 is a U-shaped plate, the front end of the gas guide plate 23 is sealed and connected to the side wall of the motor 21 to form a gas guide channel, and the inlet of the gas guide channel is connected to the gas outlet port of the motor 21, so that all the gas discharged from the motor 21 enters the gas guide channel, and the rear end of the gas guide plate 23 forms a U-shaped notch 231 with an opening toward the air outlet filter 24, and the U-shaped notch 231 is connected with the gas guide channel, so that the gas is quickly guided from the U-shaped notch 231 to the air outlet filter 24. Specifically, the opening direction of the U-shaped notch 231 is perpendicular to the central axis of the motor 21, so that the gas is vertically guided to the air outlet filter 24, achieving a better filtering effect. In order to better guide the gas to the air outlet filter 24, a baffle (not shown in the drawings) is provided on the rear end face of the gas guide plate 23 to ensure that the gas is more quickly and directly guided to the air outlet filter 24.

[0062] In order to speed up the gas discharge, the motor unit is provided with a plurality of gas guide plates 23. In this embodiment, the motor unit includes three gas guide plates 23 evenly distributed on the motor 21. Specifically, the three gas guide plates 23 are distributed in an equilateral triangle.

[0063] In order to prevent the gas guide plate 23 from increasing the volume of the motor unit and to make the gas guide plate 23 more stable, in this embodiment, a positioning groove adapted to the gas guide plate 23 is provided on the motor control board 25, and the rear end of the gas guide plate 23 passes through the positioning groove and is arranged around the air outlet filter 24. It should be noted that the motor control board 25 does not affect the gas flow in the gas guide plate 23. In addition, in this embodiment, the motor control board 25 is a circular plate, whose diameter is smaller than the diameter of the motor 21, and the motor control board 25 is perpendicular to the central axis of the motor 21.

[0064] In this embodiment, the air outlet filter 24 is provided separately, that is, the air outlet filter 24 is in contact with the motor control board 25, the gas guide plate 23, and the rear cover body 3 but not fixedly connected, so as to facilitate replacement and maintenance of the air outlet filter 24.

[0065] The air outlet filter 24 is in contact with the rear end of the motor control board 25. Since the motor control board 25 generates heat during operation, the material of the air outlet filter 24 should be selected to be a high temperature resistant filter material to prevent the air outlet filter 24 from being burned by the high heat generated by the motor control board 25. In this embodiment, the material of the air outlet filter 24 is a filter sponge.

[0066] In addition, the outlet filter 24 is in a centrally symmetrical cylindrical shape, and its central axis is colinear with the central axis of the motor 21 to ensure that the gas directed directly to the outlet filter 24 has a uniform filtering effect. In this embodiment, the outlet filter 24 is in a cylindrical shape, which not only has a uniform filtering effect, but also is easy to assemble.

[0067] The rear cover 3 is provided with a rear end assembly cavity 31 for assembling the rear end of the motor assembly 2. In this embodiment, the rear end of the motor 21, the motor control board 25, the gas guide plate 23, and the air outlet filter 24 are assembled in the rear end assembly cavity 31.

[0068] The rear end of the rear cover body 3 is provided with an air outlet grid portion 32 which is communicated with the rear end assembly cavity 31 , and the gas is filtered by the air outlet filter element 24 and then discharged from the air outlet grid portion 32 .

[0069] In order to further position and fix the air outlet filter 24, and to more quickly export the gas from the motor unit, the front end of the air outlet filter 24 is located in the rear end assembly cavity 31, and the rear end of the air outlet filter 24 is located in the air outlet grid portion 32, so as to quickly export the gas filtered by the air outlet filter 24 out of the motor unit. The air outlet grid portion 32 can effectively reduce the depth of the rear end assembly cavity 31, thereby reducing the length of the rear cover body 3 (the part forming the rear end assembly cavity 31).

[0070] Specifically, the air outlet grid portion 32 is provided with a rear cavity that is connected to the rear end assembly cavity 31, the shape of the rear cavity is adapted to the air outlet filter 24, and the length of the rear cavity is less than the length of the air outlet filter 24. In this embodiment, the shape of the air outlet grid portion 32 is cylindrical, the bottom of the air outlet grid portion 32 is a solid plate, and the side wall shape is a grid hollow shape, so that the gas can be directly and quickly discharged from the side wall of the air outlet grid portion 32.

[0071] The front cover body 1 is arranged at the front end of the motor assembly 2, and is used for guiding wind to the motor assembly 2, preventing foreign matter from invading the motor assembly and affecting its normal operation, and is detachably connected to the dust cup body.

[0072] The front cover body 1 includes an air collecting portion 11, a front cover portion 12 and an overlapping portion 13. The front cover portion 12 is located at the rear end face of the air collecting portion 11, and covers the front end of the motor assembly; the overlapping portion 13 is located on the air collecting portion 11, and the front cover body 1 can be detachably connected to the dust cup body through the overlapping portion 13; the gas passes through the air collecting portion 11 and flows to the front end of the motor assembly in the front cover portion 12.

[0073] The top of the side wall of the air collecting portion 11 is concave to form a recessed portion 14, and the overlap portion 13 is arranged in the recessed portion 14, and a gap is reserved between the overlap portion 13 and the inner wall surface of the recessed portion 14, so that the dust collecting cup body and the overlap portion 13 can be installed and removed. In this embodiment, the recessed portion 14 is a rectangular recess, and its bottom is a rectangular plane, and the bottom of the recessed portion 14 is parallel to the central axis of the air collecting portion 11, and the overlap portion 13 is a rectangular protrusion, which is arranged at the center of the rectangular plane and is perpendicular to the bottom of the recessed portion 14.

[0074] In order to better detachably connect the overlapping portion 13 with the dust cup body, a mounting groove 131 is provided in the overlapping portion 13. In this embodiment, the opening of the mounting groove 131 is opposite to the direction where the front cover portion 12 is located, that is, toward the front of the air collecting portion 11. The shape of the mounting groove 131 is adapted to the overlapping portion 13, and is a rectangular groove, and its lower wall surface is flush with the bottom of the recessed portion 14.

[0075] A limit plate 141 is provided on the edge of the recessed portion 14 near the front cover portion 12, and the limit plate 141 is arranged opposite to the overlap portion 13. In this embodiment, the limit plate 141 is perpendicular to the bottom of the recessed portion 14 and is at a certain distance from the overlap portion 13, so that the overlap portion 13 and the dust collecting cover body can be detachably connected. On the one hand, the limit plate 141 facilitates the detachable connection between the front cover body 1 and the dust collecting cup body, and on the other hand, the limit plate 141 facilitates the assembly of the motor unit into the housing of the vacuum cleaner.

[0076] The air collecting portion 11 includes a flat plate 111, an air inlet plate 112 and a rib plate 113. The front end surface of the flat plate 111 is recessed inward to form a guide groove 114. A through hole is provided in the guide groove 114. The air inlet plate 112 is provided with an axial air inlet 115 along the central axis direction thereof. The air inlet plate 112 is mounted on the through hole through the rib plate 113 to form a radial air inlet 116 (the radial air inlet 116 is perpendicular to the central axis of the air inlet plate 112). The air inlet plate 112 is located at the front side of the guide groove 114 (i.e., the side away from the front cover portion 12). The radial air inlet 116 is connected to the axial air inlet 115. Specifically, the number of rib plates 113 is N≥2, and two adjacent rib plates 113, the air inlet plate 112 and the guide groove 114 constitute a radial air inlet 116. In this way, N rib plates 113 can form N radial air inlets 116. In this embodiment, the air collecting portion 11 includes six ribs 113 , and the six ribs 113 , the air inlet plate 112 and the guide grooves 114 form six radial air inlets 116 .

[0077] At least one axial air inlet 115 is provided on the air inlet plate 112, so that the gas can flow from the air inlet to the front cover 12 along the direction of the central axis of the air inlet plate 112. Specifically, the axial air inlet 115 includes a center hole, a first annular hole and a second annular hole, wherein the center hole is located at the center of the air inlet plate 112, and the first annular hole and the second annular hole are sequentially arranged around the center hole, the center hole is circular in shape, and the first annular hole and the second annular hole are fan-shaped in shape, and the fan-shaped hole coincides with the center of the circle. In order to ensure the stability and air intake of the air inlet plate 112, the areas of the three axial air inlets are increased in sequence according to the center hole, the first annular hole and the second annular hole. In this embodiment, the air inlet plate 112 is provided with a center hole, four first annular holes, and four second annular holes.

[0078] In order to stabilize the air collecting portion 11 , the guide groove 114 is located at the center of the flat plate 111 , a through hole is opened at the center of the guide groove 114 , and the ribs 113 are evenly distributed around the through hole.

[0079] In order to prevent the air inlet plate 112 from affecting the air inlet of the radial air inlet 116, the size of the air inlet plate 112 is not larger than the size of the through hole, that is, the projection edge of the air inlet plate 112 in the direction of the through hole cannot exceed the edge of the through hole. Specifically, the shape and size of the air inlet plate 112 are adapted to the through hole. In this embodiment, the through hole is a circular hole, and the air inlet plate 112 is also circular, and the two have the same diameter and the central axes are collinear.

[0080] In order to make the gas flow more smoothly to the radial air inlet 116, the inner wall of the guide groove 114 is a streamlined curved surface, and the streamline direction flows from the flat plate 111 to the through hole. In this embodiment, the inner wall of the guide groove 114 is an arc-shaped curved surface, that is, the guide groove 114 and the flat plate 111 are connected to the edge of the through hole in an arc shape. Furthermore, the guide groove 114 is in the shape of a concave hemispherical surface as a whole, and the center of the sphere is located on the central axis of the flat plate 111.

[0081] In order not to increase the length of the front cover 1, the ribs 113 and the air inlet plate 112 are arranged in the guide groove 114 and do not exceed the plane where the flat plate 111 is located. In this embodiment, the outer end surfaces of the air inlet plate 112 and the ribs 113 are flush with the outer end surface of the flat plate 111.

[0082] In order to make the air inlet plate 112 stable and the air inlet of the air collecting part 11 smoother and more stable, the height of the rib plate 113 is greater than the thickness of the air inlet plate 112, and the outer end surface of the rib plate 113 is flush with the air inlet plate 112. Specifically, the rib plate 113 is a support plate similar to a right triangle, the length of the first right angle surface of the rib plate 113 is greater than the thickness of the air inlet plate 112, the upper part of the first right angle surface of the rib plate 113 (the part close to the air inlet plate 112) is connected to the air inlet plate 112, and the lower part (the part away from the air inlet plate 112) is not connected to the air inlet plate 112, the lower side of the first right angle surface of the rib plate 113 is connected to the edge of the through hole, the second right angle surface of the rib plate 113 is flush with the outer end surface of the air inlet plate 112, and the inclined surface of the rib plate 113 is adapted and connected to the wall surface of the guide groove 114, so that the rib plate 113 provides a stable triangular support for the air inlet plate 112, so that the rib plate 113 can better support the air inlet plate 112. In this embodiment, the surface where the rib 113 connects with the guide groove 114 is an arc-shaped surface, and the second right-angle surface of the rib 113, the outer end surface of the air inlet plate 112 and the outer end surface of the flat plate 111 are flush.

[0083] In order to facilitate the gas to be better guided to the air collecting part 11, a protrusion 117 is provided on the edge of the flat plate 111, and the shape of the protrusion 117 is adapted to the shape of the flat plate 111, so that a certain gap is left between the air inlet plate 112 of the air collecting part 11 and the dust collecting cup body, so that the gas can flow smoothly to the air collecting part 11 after being dust-removed and filtered by the dust collecting cup body. It should be noted that in order not to affect the detachable connection between the front cover body 1 and the dust collecting cup body, in this embodiment, the bottom of the recessed part 14 extends to the front end surface of the flat plate 111, and the bottom of the recessed part 14 is perpendicular to the flat plate 111, that is, the recessed part 14 is connected with the flat plate 111, and there is no barrier between the two, and no protrusion 117 is provided at the junction of the flat plate 111 and the recessed part 14.

[0084] The front cover 12 is provided with a front assembly cavity 121 for mounting the front end of the motor assembly 2. The front assembly cavity 121 is connected with the through hole so that all the gas flowing through the through hole enters the front assembly cavity 121. Specifically, the front assembly cavity 121 is composed of an annular wall surface surrounding the through hole, that is, the central axis of the front assembly cavity 121 is colinear with the central axis of the wind collecting portion 11, and the diameter of the front assembly cavity 121 is larger than the aperture of the through hole. In this embodiment, the sealing sleeve 22 and the front end of the motor 21 are assembled in the front assembly cavity 121.

[0085] The front assembly cavity 121 is sealedly connected to the sealing sleeve 22 , and the air inlet hole 221 corresponds to the through hole, so that the gas flowing through the through hole of the air collecting portion 11 can all flow to the motor 21 through the air inlet hole 221 .

[0086] In order not to increase the overall length of the front cover body 1, the back of the guide groove 114 is located in the front end assembly cavity 121, that is, the flat plate 111 is recessed into the front end assembly cavity 121 to form the guide groove 114. Specifically, the wall surface of the front end assembly cavity 121 is adapted to the edge of the guide groove 114, so that the front end assembly cavity 121 is just covered on the guide groove 114.

[0087] The front cover body 1 is detachably connected to the rear cover body 3, and the front assembly cavity 121 and the rear assembly cavity 31 together form an assembly cavity for assembling the motor assembly 2. Specifically, an assembly part 122 is provided on the outer wall surface of the front assembly cavity 121, and a connecting piece 311 adapted to the assembly part 122 is provided on the outer wall of the rear assembly cavity 31. The front cover body 1 and the rear cover body 3 are detachably connected together through the assembly part 124 and the connecting piece 311. Exemplarily, the assembly part 124 and the connecting piece 311 are detachable connection structures such as latches, buckles, and bolts.

[0088] The process of gas flowing through the motor unit: the gas enters from the axial air inlet 115 and the radial air inlet 116 of the air collecting part 11 of the front cover body 1, flows to the motor 21 through the through hole and the air inlet hole 221, and after flowing out from the air outlet port of the motor 21, it flows directly to the air outlet filter 24 under the guidance of the gas guide plate 23, and after being filtered by the air outlet filter 24, it is exported to the motor unit through the air outlet grid part 32.

[0089] The motor unit provided in this embodiment can achieve at least one of the following beneficial effects:

[0090] (1) The motor is clamped in the motor cover through the front sealing sleeve and the air outlet filter component, without the need for a rear seal, which not only simplifies the fixing method of the motor but also reduces the processing cost;

[0091] (2) Placing the air outlet filter in the motor cover can effectively reduce the diameter of the motor unit, thereby reducing the volume of the motor unit and the overall size of the vacuum cleaner;

[0092] (3) The gas is directly guided to the air outlet filter through the gas guide plate, so that the gas filtering effect is better;

[0093] (4) The gas is guided multiple times through the guide groove, the gas guide plate, and the air outlet grid, so that the gas flows more smoothly in the motor unit, which can effectively increase the gas flow rate and thus increase the suction power of the vacuum cleaner;

[0094] (5) By arranging an overlap portion on the front cover body, a connection position is added for the assembly of the dust cup body, thereby improving the connection performance of the dust cup body and preventing the dust cup body from falling off from the dust cup body cavity, thereby preventing the normal operation of the vacuum cleaner from being affected by the falling off of the dust cup body;

[0095] (6) A portion of the air outlet filter is located inside the rear cover, and a portion is located inside the air outlet grid, which can effectively reduce the length of the motor unit and thus reduce the overall length of the vacuum cleaner.

[0096] Embodiment 2

[0097] This embodiment provides a vacuum cleaner, such as Figure 5-Figure 10 As shown, it includes the motor unit, exhaust assembly 4 and shell 5 provided in embodiment 1.

[0098] The motor unit is installed at the rear end of the shell 5, and the air outlet grid portion 32 of the motor unit passes through the rear end face of the shell 5. The exhaust component 4 is covered on the air outlet grid portion 32 and is detachably connected to the rear end face of the shell 5. The gas discharged from the air outlet grid portion 32 is discharged from the exhaust component 4 to the outside of the vacuum cleaner.

[0099] The exhaust assembly 4 includes an exhaust filter 41 and an exhaust cover 42 . An exhaust assembly cavity for assembling the exhaust filter 41 is provided in the exhaust cover 42 .

[0100] The exhaust filter 41 is provided with a grid assembly cavity 411 that can accommodate the air outlet grid portion 32, so that the gas discharged from the air outlet grid portion 32 is filtered by the exhaust filter 41 before being discharged from the vacuum cleaner. Specifically, the grid assembly cavity 411 is adapted to the air outlet grid portion 32, and in order to reduce the length of the exhaust cover 42, the length of the exhaust filter 41 is the same as the length of the air outlet grid portion 32. In this embodiment, the exhaust filter 41 adopts a cylindrical filter sponge or a cylindrical filter Hepa, which not only has a good filtering effect, but also is easy to assemble.

[0101] The exhaust hood 42 is provided with an exhaust port 421 which is in communication with the exhaust assembly cavity, and the gas is filtered by the exhaust filter 41 and then discharged from the vacuum cleaner from the exhaust port 421. In this embodiment, since the direction of the gas discharged from the air outlet grid portion 32 is perpendicular to the central axis of the air outlet grid portion, the exhaust port 421 is provided on the side wall of the exhaust hood 42, and the exhaust port 421 is opposite to the position of the air outlet grid portion 32 so that the gas can be discharged smoothly.

[0102] The rear end surface of the exhaust hood 42 is provided with a nameplate slot 422 for pasting or assembling a nameplate sticker 43. Further, in order to facilitate pasting and positioning of the nameplate sticker, a positioning portion 423 is provided in the nameplate slot 422, and a positioning slot 431 adapted to the positioning portion 423 is provided on the nameplate sticker 43. The nameplate sticker 43 is positioned by the positioning portion 423 and the positioning slot 431, and then pasted into the nameplate slot 422.

[0103] The exhaust hood 42 is detachably connected to the rear end face of the housing 5, and the two are connected by a detachable connection method such as snap connection, plug connection, and screw connection. In this embodiment, the rear end face of the housing 5 is provided with an assembly protrusion 51, and the front end face of the exhaust hood 42 is provided with an assembly groove 424 that matches the assembly protrusion 51. The exhaust hood 42 is detachably installed on the rear end face of the housing 5 through the assembly groove 424 and the assembly protrusion 51.

[0104] The vacuum cleaner provided in this embodiment also includes a dust cup body 6. A dust cup body cavity for detachably assembling the dust cup body 6 is provided in the middle of the shell 5. Specifically, the shape and size of the integrated cup body cavity are adapted to the shape and size of the dust cup body 6.

[0105] The front end face of the front cover body 1 of the motor unit constitutes the rear wall of the dust cup cavity. Specifically, the front cover portion 12 constitutes the rear wall of the dust cup cavity, which is in contact with the dust cup body 6, and the overlapping portion 13 is exposed at the top of the shell 5 so as to be detachably connected to the dust cup body 6.

[0106] The top of the rear end of the dust cup body 6 is provided with a buckle part 61 that can be detachably connected to the overlap part 13. When the dust cup body 6 is assembled in the dust cup body cavity, the buckle part 61 can be buckled on the overlap part 13 located at the top of the front cover body 1, thereby adding another connection position between the dust cup body 6 and the shell 5 to improve the connection relationship between the dust cup body 6 and the shell 5. Specifically, the buckle part 61 is provided with an assembly slot, which is matched with the raised overlap part 13, and the wall surface of the buckle part 61 forming the assembly slot is embedded in the gap between the overlap part 13 and the recessed part 14.

[0107] The suction pipe 52 of the vacuum cleaner is arranged at the front end of the shell 5. The gas enters the vacuum cleaner from the suction pipe 52, and after dust removal and filtration by the dust collecting cup body 6, it flows from the air collecting part 11 of the front cover body 1 to the motor assembly 2, and after being filtered by the air outlet filter 24, it is guided to the exhaust assembly 4 from the air outlet grid part 32. The gas is finally discharged to the outside of the vacuum cleaner from the exhaust port 421 of the exhaust assembly 4.

[0108] Compared with the prior art, the beneficial effects of the vacuum cleaner provided in this embodiment include not only the beneficial effects of the motor unit provided in the first embodiment (which will not be described one by one here), but also have one of the following beneficial effects:

[0109] (1) The gas is directly guided to the exhaust filter through the air outlet grid, so that the gas filtering effect is better;

[0110] (2) The air outlet grid is located in the exhaust assembly, which can effectively reduce the length of the motor unit in the housing, thereby reducing the overall length of the vacuum cleaner;

[0111] (3) The nameplate slot at the rear end of the exhaust hood is provided with a positioning portion to facilitate the positioning of the nameplate.

[0112] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A motor unit, characterized in that: It comprises a motor cover and a motor assembly (2) installed in the motor cover, wherein the motor assembly (2) comprises a motor (21), a sealing sleeve (22), a gas guide plate (23), an air outlet filter (24) and a motor control board (25); The sealing sleeve (22) is wrapped around the air inlet end of the motor (21); The front end of the gas guide plate (23) is connected to the gas outlet port of the motor (21); The gas guide plate (23) surrounds the outer side of the air outlet filter (24); The motor control board (25) is located at the rear end of the motor (21) and is connected to the motor (21); The air outlet filter (24) is arranged in a space surrounded by the motor control board (25), the gas guide plate (23) and the motor cover.

2. The motor unit according to claim 1, characterized in that The front end of the gas guide plate (23) is sealedly connected to the gas outlet port of the motor (21).

3. The motor unit according to claim 1, characterized in that The outer wall of the sealing sleeve (22) is sealed to the motor cover, and an air inlet hole (221) is provided at the center of the sealing sleeve (22).

4. The motor unit according to any one of claims 1 to 3, characterized in that: The motor cover comprises a front cover body (1) and a rear cover body (3), and the front cover body (1) and the rear cover body (3) are detachably connected.

5. The motor unit according to claim 4, characterized in that The rear cover (3) is provided with a rear end assembly cavity (31), and the rear end of the motor (21), the motor control board (25), the gas guide plate (23), and the air outlet filter (24) are assembled in the rear end assembly cavity (31).

6. The motor unit according to claim 5, characterized in that An air outlet grille portion (32) is provided at the rear end of the rear cover body (3), and the air outlet grille portion (32) is communicated with the rear end assembly cavity (31).

7. The motor unit according to claim 6, characterized in that The front end of the air outlet filter (24) is located in the rear end assembly cavity (31), and the rear end of the air outlet filter (24) is located in the air outlet grid portion (32).

8. The motor unit according to claim 4, characterized in that The front cover body (1) comprises an air collecting portion (11) and a front cover portion (12), wherein the front cover portion (12) is located at the rear end surface of the air collecting portion (11); The front cover (12) is provided with a front end assembly cavity (121), the sealing sleeve (22) and the front end of the motor (21) are assembled in the front end assembly cavity (121), and the sealing sleeve (22) is sealed and connected to the front end assembly cavity (121); The air collecting portion (11) is provided with a through hole that penetrates the front assembly cavity (121), and the through hole corresponds to the air inlet hole (221) of the sealing sleeve.

9. A vacuum cleaner, characterized in that: It comprises the motor unit, the exhaust assembly (4) and the housing (5) as claimed in any one of claims 1 to 8.

10. The vacuum cleaner according to claim 9, characterized in that: The motor unit is mounted at the rear end of the housing (5), and the air outlet grid portion (32) of the motor unit passes through the rear end surface of the housing (5); The exhaust assembly (4) is covered on the air outlet grid portion (32), and the exhaust assembly (4) is connected to the rear end surface of the shell (5).

11. The vacuum cleaner according to claim 10, characterized in that: The exhaust assembly (4) comprises an exhaust filter (41) and an exhaust cover (42); The exhaust hood (42) is provided with an exhaust assembly cavity, and the exhaust filter (41) is assembled in the exhaust assembly cavity; An exhaust port (421) is provided on the exhaust cover (42), and the exhaust port (421) is communicated with the exhaust assembly cavity.

12. The vacuum cleaner according to claim 11, characterized in that: A nameplate groove (422) is provided on the rear end surface of the exhaust cover (42), and a positioning portion (423) is provided in the nameplate groove (422).

13. The vacuum cleaner according to claim 11, characterized in that: The exhaust filter element (41) is provided with a grid assembly cavity (411), and the air outlet grid portion (32) is located in the grid assembly cavity (411).

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