A motor housing and cleaning device

Abstract

The present application relates to a kind of motor housings and cleaning equipment, belong to the technical field of household appliances, to solve the problem of poor heat dissipation effect of existing motor housing.The motor housing of the present application, to be assembled with the motor of cleaning equipment, it includes: first cavity, to be assembled with the rear end of the motor, the first cavity is provided with first air inlet and first air outlet;Second cavity, to be assembled with the front end of the motor, the second cavity is provided with second air inlet and second air outlet;Wherein, the front end is provided with air inlet and air outlet;Second air inlet is communicated with the air inlet;Second air outlet is communicated with the air outlet.The motor housing of the present application includes two cavities, first cavity is used to heat dissipation to motor, second cavity is used to form negative pressure for motor, two cavities are clear in division of labor, do not interfere with each other, can effectively improve the working efficiency and life of motor.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a motor housing and a cleaning device. Background Art

[0002] At present, the motor housing of the existing cleaning equipment includes a front end with an air inlet and a rear end with an exhaust port. The fluid enters through the air inlet and is discharged through the exhaust port. Due to the long distance between the air inlet and the exhaust port, the fluid cannot be quickly discharged from the motor housing, resulting in the heat generated by the motor cannot be discharged in time, thereby affecting the use of the motor. Summary of the Invention

[0003] In view of the above analysis, the embodiments of the present invention aim to provide a motor housing and a cleaning device to solve the problem of poor heat dissipation effect of the existing motor housing.

[0004] In one aspect, the present invention provides a motor housing for assembling a motor of a cleaning device, comprising:

[0005] a first cavity for assembling the rear end of the motor, wherein the first cavity is provided with a first air inlet and a first air outlet;

[0006] a second cavity for assembling the front end of the motor, the second cavity being provided with a second air inlet and a second air outlet;

[0007] Wherein, the front end portion is provided with an air inlet and an air outlet;

[0008] The second air inlet is in communication with the air inlet;

[0009] The second air outlet is communicated with the air outlet.

[0010] Furthermore, at least a portion of the second air outlet is opposite to the air outlet.

[0011] Furthermore, the first cavity is connected to the second cavity, and a first sealing limiter is provided at the connection between the first cavity and the second cavity;

[0012] The first sealing limiter is sealed to the motor.

[0013] Furthermore, the bottom of the first cavity is communicated with the top of the second cavity, and the first sealing limiter is located at the bottom of the first cavity;

[0014] The first sealing limiter is provided with a passage opening for the rear end portion of the motor to pass through;

[0015] A limiting groove is provided at the bottom of the first sealing limiting member, and a positioning protrusion is provided on the motor that matches the limiting groove.

[0016] Furthermore, it further comprises an upper shell portion and a lower shell portion, wherein the upper shell portion encloses the first cavity, and the lower shell portion encloses the second cavity;

[0017] The upper shell portion is located above the lower shell portion, and the upper shell portion and the lower shell portion are detachably connected;

[0018] The upper shell is provided with the first air inlet and the first air outlet;

[0019] The lower shell portion is provided with the second air inlet and the second air outlet;

[0020] The first sealing limiter is annular in shape, an outer ring wall of the first sealing limiter is sealed with the upper shell, and an inner ring wall of the first sealing limiter is sealed with the motor.

[0021] Furthermore, the bottom of the upper shell is open, the top of the lower shell is open, and the bottom of the upper shell is butted against the top of the lower shell;

[0022] The bottom of the upper shell is provided with a buckling portion;

[0023] The lower shell portion is provided with a protrusion matched with the buckling portion.

[0024] Furthermore, the second air inlet is located on the bottom wall of the lower shell portion;

[0025] The second air inlet is located on the side wall of the lower shell;

[0026] An exhaust portion is provided on the outer side wall of the lower shell portion, and the exhaust portion is communicated with the second air outlet.

[0027] Furthermore, the first air inlet and the first air outlet are located on the side wall of the upper shell;

[0028] The first air inlet is located below the first air outlet;

[0029] An exhaust pipe is provided on the outer side wall of the upper shell, and the exhaust pipe is arranged around the outside of the first exhaust port.

[0030] Furthermore, an exhaust fan is provided in the exhaust duct.

[0031] Furthermore, a connecting portion detachable from the lower shell portion is provided at the bottom end of the side wall of the upper shell portion, and the connecting portion is sealedly connected to the first sealing limiter.

[0032] Furthermore, the upper shell portion includes a left upper shell and a right upper shell, and the left upper shell and the right upper shell are connected to each other to jointly define the first cavity;

[0033] A left half connecting portion is provided at the bottom end of the left upper shell side wall, and a right half connecting portion is provided at the bottom end of the right upper shell side wall, and the left half connecting portion and the right half connecting portion are connected to form the connecting portion;

[0034] The left upper shell and the right upper shell are detachably connected.

[0035] Furthermore, a buckle portion is provided on the top end surface of the upper left shell;

[0036] The buckle portion is provided with a clamping hole;

[0037] The top end surface of the upper right shell is provided with a clamping rib adapted to the clamping hole.

[0038] Furthermore, a second sealing limiter is provided in the second cavity, and the second sealing limiter is located between the second air inlet and the second air outlet;

[0039] The second sealing limiter is provided with a ventilation opening arranged opposite to the second air inlet, so that the second sealing limiter is sealed and connected to the motor, and the air inlet is communicated with the second air inlet through the ventilation opening.

[0040] Furthermore, the first sealing limiter and the second sealing limiter are made of rubber.

[0041] In another aspect, the present invention provides a cleaning device comprising the motor housing and a motor, wherein the motor is assembled in the motor housing.

[0042] Furthermore, it also includes a sewage tank and a main body shell, and the motor shell and the sewage tank are detachably assembled in the main body shell;

[0043] The motor housing is located above the sewage tank, and the second air inlet is connected to the sewage tank;

[0044] The main body shell is provided with an exhaust grille, and the exhaust grille is communicated with the exhaust pipe of the motor shell through an air guide pipe.

[0045] Furthermore, the airway tube includes a first conduit, a second conduit and a bend, the first conduit is parallel to the second conduit, and the first conduit and the second conduit are connected through the bend.

[0046] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0047] (1) The motor housing of the present invention includes two cavities. The first cavity is used to dissipate heat from the motor, and the second cavity is used to form a negative pressure for the motor. The two cavities have clear division of labor and do not interfere with each other, which can effectively improve the working efficiency and life of the motor.

[0048] (2) At least a portion of the second air outlet is opposite to the air outlet of the motor, so that the gas exhausted from the motor can be discharged from the motor housing through the second air outlet as quickly as possible, shortening the time that the motor exhaust gas stays in the motor housing, so as to quickly dissipate the heat generated at the front end of the motor and avoid adverse effects on the motor due to poor heat dissipation at the front end;

[0049] (3) A first sealing stopper is provided at the connection between the first cavity and the second cavity. The first sealing stopper is sealed and connected to the motor and limits the motor so that after the motor is assembled into the motor housing, the front end of the motor is located in the second cavity and the rear end of the motor is located in the first cavity. The first cavity and the second cavity are not connected after the motor is assembled, so that the airflows in the first cavity and the second cavity do not interfere with each other and do not affect each other's functions;

[0050] (4) A second sealing stopper is provided in the second cavity. When the motor is assembled into the motor housing, the second sealing stopper is sealed and connected to the motor, dividing the second cavity into two non-communicating cavities, namely the air inlet cavity and the air outlet cavity. The air inlet cavity is connected to the second air inlet and the motor air inlet, and the air outlet cavity is connected to the second air outlet and the motor air outlet, so that the motor forms the negative pressure required for the cleaning equipment;

[0051] (5) The first sealing stopper and the second sealing stopper are made of rubber. On the one hand, they can better achieve a sealed connection. On the other hand, when the motor rotates, they can alleviate the vibration generated by the motor rotation, so that the motor housing has a good vibration reduction effect;

[0052] (6) The exhaust grille on the cleaning equipment is connected to the exhaust port through an air duct. The air duct is provided with a bend pipe, which can effectively reduce the exhaust noise generated when the upper shell exhausts air to the exhaust grille, thereby achieving a noise reduction effect.

[0053] In the present invention, the above-mentioned technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of the present invention will be described in the following description, and some advantages will become apparent from the description or be learned through practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The accompanying 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 parts throughout the drawings.

[0055] Figure 1 Schematic diagram of the structure of the motor housing in a specific embodiment (1);

[0056] Figure 2Schematic diagram of the structure of the motor housing in a specific embodiment (II);

[0057] Figure 3 An exploded view of a motor housing in a specific embodiment;

[0058] Figure 4 1 is a cross-sectional view of the motor housing in a specific embodiment;

[0059] Figure 5 2 is a cross-sectional view of the motor housing in a specific embodiment;

[0060] Figure 6 Schematic diagram of the structure of the upper shell in a specific embodiment (1);

[0061] Figure 7 Schematic diagram of the structure of the upper shell in a specific embodiment (II);

[0062] Figure 8 Schematic diagram of the structure of the upper right shell in a specific embodiment (I);

[0063] Figure 9 Schematic diagram of the structure of the upper right shell in a specific embodiment (II);

[0064] Figure 10 Schematic diagram of the structure of the upper left shell in a specific embodiment (I);

[0065] Figure 11 Schematic diagram of the structure of the upper left shell in a specific embodiment (II);

[0066] Figure 12 Schematic diagram of the structure of the first sealing limiter in a specific embodiment (I);

[0067] Figure 13 Schematic diagram of the structure of the first sealing limiter in a specific embodiment (II);

[0068] Figure 14 This is a structural diagram of a specific embodiment in which the lower shell is equipped with a second sealing limiter;

[0069] Figure 15 is a cross-sectional view of a specific embodiment in which the lower shell is equipped with a second sealing limiter;

[0070] Figure 16 Schematic diagram of the structure of the lower shell in a specific embodiment (1);

[0071] Figure 17 Schematic diagram of the structure of the lower shell part in a specific embodiment (II);

[0072] Figure 18 It is a structural diagram of the exhaust part in a specific embodiment;

[0073] Figure 19 Schematic diagram of the structure of the second sealing limiter in a specific embodiment (I);

[0074] Figure 20 Schematic diagram of the structure of the second sealing limiter in a specific embodiment (II);

[0075] Figure 21 It is a partial cross-sectional view of the cleaning device in a specific embodiment (1);

[0076] Figure 22 Partial cross-sectional view of the cleaning device in a specific embodiment (II)

[0077] Figure 23 Partial cross-sectional view of the cleaning device in a specific embodiment (3)

[0078] Figure 24 Schematic diagram of the structure of the airway in a specific embodiment.

[0079] Reference numerals:

[0080] 1-first cavity; 101-first air inlet; 102-first air outlet; 11-first sealing limiter; 111-passage opening; 112-limiting groove;

[0081] 2-second cavity; 201-second air inlet; 202-second air outlet; 21-second sealing limiter; 211-ventilation port;

[0082] 3-upper shell; 3a-left upper shell; 3b-right upper shell; 31-fastening portion; 32-snapping ring; 32a-left half of the snap ring; 32b-right half of the snap ring; 33-exhaust duct; 331-exhaust fan; 34-connecting portion; 34a-left half of the connecting portion; 34b-right half of the connecting portion; 341-first ring wall; 341a-left half of the first ring wall; 341b-right half of the first ring wall; 342-second ring wall; 342a -Left half second ring wall; 342b -Right half second ring wall; 343 -Third ring wall; 343a -Left half third ring wall; 343b -Right half third ring wall; 344 -Ring plate; 344a -Left half ring plate; 344b -Right half ring plate; 345 -Assembly groove; 35 -Sealing ring; 36 -Snap portion; 361 -Hole; 37 -Bar; 38 -Left fixing portion; 39 -Right fixing portion; 310 -Connecting bracket;

[0083] 4-lower shell portion; 41-protrusion; 42-assembly portion; 421-through hole; 422-assembly ring wall; 43-exhaust portion; 431-main exhaust port; 432-first exhaust port; 433-second exhaust port; 434-guide portion;

[0084] 5-sewage tank; 6-main unit housing; 61-exhaust grille; 7-air duct; 71-first conduit; 72-second conduit; 73-elbow. DETAILED DESCRIPTION

[0085] The preferred embodiments of the present invention will be described in detail below with reference to 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.

[0086] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the term "connected" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0087] The terms "top," "bottom," "above," "below," and "on" used throughout the description refer to relative positions of components of a device, such as the relative positions of top and bottom substrates within a device. It will be understood that devices are multifunctional regardless of their orientation in space.

[0088] The working surface of the present invention can be a plane or a curved surface, can be inclined, or can be horizontal. For the convenience of description, the embodiment of the present invention is placed on a horizontal surface and used on the horizontal surface, and "high and low" and "up and down" are defined in this way.

[0089] Example 1

[0090] This embodiment discloses a motor housing for assembling a motor of a cleaning device, such as Figures 1 to 20 Shown, including:

[0091] A first cavity 1 is provided for assembling the rear end of the motor, wherein the first cavity 1 is provided with a first air inlet 101 and a first air outlet 102;

[0092] The second cavity 2 is used to assemble the front end of the motor, and the second cavity 2 is provided with a second air inlet 201 and a second air outlet 202;

[0093] The air inlet and outlet of the motor are located at the front end. It should be noted that the air inlet and outlet of the motor are connected to the second cavity 2 but not to the first cavity 1.

[0094] The second air inlet 201 is connected to the air inlet so that the gas exhausted from the sewage tank of the cleaning equipment (which may also be a cleaning part with a cleaning function and an air channel, such as a filter assembly, a floor brush, a roller brush, etc.) is completely introduced into the motor through the second air inlet 201;

[0095] The second air outlet 202 is communicated with the air outlet, so that the gas exhausted from the motor can be discharged from the motor housing through the second air outlet 202 .

[0096] It should be noted that the first cavity 1 is connected to the outside of the motor housing through the first air inlet 101 and the first air outlet 102, and the second cavity 2 is connected to the sewage tank through the second air inlet 201 and to the outside of the motor housing through the second air outlet 202.

[0097] It should be noted that the air inlet, air outlet and impeller of the motor are all located at the front end of the motor.

[0098] Compared with the prior art, the motor housing of the present invention includes two cavities. The front end of the motor is assembled in the second cavity 2, and the air inlet and air outlet of the motor are both located at the front end, and the air inlet and air outlet of the motor are respectively connected to the second air inlet 201 and the second air outlet 202, so that the motor forms a negative pressure in the second cavity 2, so that the dust-containing fluid on the ground can be smoothly sucked into the sewage tank; the rear end of the motor is assembled in the first cavity 1, and the gas outside the motor housing enters the first cavity 1 through the first air inlet 101, and then is discharged to the outside of the motor housing through the first air outlet 102. During the circulation of the gas in the first cavity 1, the heat generated by the rear end of the motor is taken away, so that the heat generated during the operation of the motor can be discharged in time, thereby improving the working efficiency and life of the motor. In short, the motor housing of the present invention includes two cavities, the first cavity 1 is used to dissipate heat and cool the motor, and the second cavity 2 is used to form a negative pressure and generate suction for the motor. The two cavities have clear division of labor and do not interfere with each other, which can effectively improve the working efficiency of the motor and extend the life of the motor.

[0099] At least a portion of the second air outlet 202 is opposite to the air outlet of the motor, so that the gas exhausted from the motor can be discharged from the motor housing through the second air outlet 202 as soon as possible, shortening the time that the motor exhaust gas stays in the motor housing, so as to quickly dissipate the heat generated at the front end of the motor and avoid adverse effects on the motor due to poor heat dissipation at the front end.

[0100] The first cavity 1 is connected to the second cavity 2, and a first sealing limiter 11 is provided at the connection between the first cavity 1 and the second cavity 2. The first sealing limiter 11 is sealed and connected to the motor and limits the motor so that after the motor is assembled into the motor housing, the front end of the motor is located in the second cavity 2, and the rear end of the motor is located in the first cavity 1. After the motor is assembled, the first cavity 1 and the second cavity 2 are not connected, so that the airflows in the first cavity 1 and the second cavity 2 do not interfere with each other and do not affect each other's functions.

[0101] Specifically, the bottom of the first cavity 1 is communicated with the top of the second cavity 2 , and the first sealing limiter 11 is located at the bottom of the first cavity 1 .

[0102] The motor housing includes an upper shell 3 and a lower shell 4. The upper shell 3 encloses the above-mentioned first cavity 1, and the lower shell 4 encloses the above-mentioned second cavity 2. The upper shell 3 is located above the lower shell 4, and the upper shell 3 and the lower shell 4 are detachably connected to facilitate assembly and maintenance of the motor.

[0103] It should be noted that in the present invention, "front" and "rear" refer to the front and back of the fluid flow direction, with the downstream portion being the rear and the upstream portion being the front. For example, the front end of the motor is upstream of the rear end. In the present invention, "upper" and "lower" refer to the geometric upper and lower positional relationship of components when they are located in the cleaning device, for example, the upper shell portion 3 is located above the lower shell portion 4.

[0104] Specifically, the bottom of the upper shell 3 is open, and the top of the lower shell 4 is open, so that the first cavity 1 is connected to the second cavity 2. In this embodiment, the bottom of the upper shell 3 and the top of the lower shell 4 are connected and detachably connected by a buckle.

[0105] Furthermore, the bottom of the upper shell 3 is provided with a buckling portion 31, and the lower shell 4 is provided with a protrusion 41 adapted to the buckling portion 31. In this embodiment, the bottom of the upper shell 3 is provided with four buckling portions 31, and the lower shell 4 is provided with four protrusions 41 adapted to the buckling portion 31.

[0106] The above-mentioned first sealing limiter 11 is located at the bottom of the upper shell 3. Specifically, the first sealing limiter 11 is annular in shape, and a passage opening 111 is provided in the center of the first sealing limiter 11 for the rear end of the power supply motor to pass through, so that the rear end of the motor can be assembled in the first cavity 1.

[0107] The outer ring wall of the first sealing limiter 11 is sealed to the upper shell 3 , and the inner ring wall of the first sealing limiter 11 is sealed to the motor.

[0108] A limiting groove 112 is provided at the bottom of the first sealing limiter 11, and the motor is provided with a positioning protrusion adapted to the limiting groove 112 to position the motor so that the rear end of the motor is located in the upper shell 3 and the front end of the motor is located in the lower shell 4.

[0109] In this embodiment, four buckling portions 31 are disposed around the outer side of the first sealing limiter 11 .

[0110] The upper shell 3 is provided with the first air inlet 101 and the first air outlet 102 , which are in communication with the first cavity 1 . Specifically, the first air inlet 101 and the first air outlet 102 are located on the side wall of the upper shell 3 .

[0111] The number of the first air inlet 101 and the first air outlet 102 is greater than or equal to 1. In this embodiment, the upper shell 3 is provided with one first air inlet 101 and two first air outlets 102. Furthermore, the two first air outlets 102 are arranged side by side.

[0112] The first air inlet 101 is located below the first air outlet 102 , so that the airflow in the first cavity 1 flows upward, consistent with the rising direction of hot air, so as to conduct more heat out of the first cavity 1 and improve the heat dissipation effect of the upper shell 3.

[0113] Furthermore, a snap ring 32 is provided on the inner side wall of the upper shell 3, and the snap ring 32 is located between the first air inlet 101 and the first air outlet 102 to prevent the gas from entering the first cavity 1 through the first air inlet 101 and being discharged through the first air outlet 102 without fully circulating in the first cavity 1. The snap ring 32 blocks the airflow, so that the airflow can fully circulate in the first cavity 1, thereby improving the heat dissipation effect of the upper shell 3 on the motor.

[0114] It should be noted that the snap ring 32 is an annular plate, the outer ring wall of the snap ring 32 is connected to the inner wall of the upper shell 3, and a gap for air flow is provided between the inner ring wall of the snap ring 32 and the rear end of the motor.

[0115] An exhaust pipe 33 extends outward from the side of the first exhaust port 102 away from the first cavity 1, that is, an exhaust pipe 33 is provided on the outer wall of the upper shell 3. The exhaust pipe 33 is arranged around the outside of the first exhaust port 102 to guide the gas discharged from the first exhaust port 102 so that it can be discharged from the upper shell 3 as quickly as possible to improve the heat dissipation effect of the upper shell 3.

[0116] In order to further improve the heat dissipation effect of the upper shell 3, an exhaust fan 331 is provided in the exhaust pipe 33 to accelerate the gas flow rate in the first cavity 1 so that the heat in the first cavity 1 can be discharged from the upper shell 3 as soon as possible, thereby improving the heat dissipation effect of the motor housing.

[0117] A connecting portion 34 detachable from the lower shell portion 4 is provided at the bottom end of the side wall of the upper shell portion 3 , and the connecting portion 34 is sealingly connected to the first sealing limiter 11 .

[0118] Specifically, the connecting portion 34 includes a first annular wall 341, a second annular wall 342, a third annular wall 343 and an annular plate 344. The first annular wall 341, the second annular wall 342 and the third annular wall 343 are located below the annular plate 344, and the first annular wall 341 is arranged on the outside of the first sealing limiter 11, the second annular wall 342 is arranged on the outside of the first annular wall 341, and the third annular wall 343 is arranged on the outside of the second annular wall 342. An assembly groove 345 for assembling the top of the lower shell 4 is formed between the third annular wall 343 and the second annular wall 342.

[0119] The ring plate 344 is annular in shape and is arranged around the outer side wall of the upper shell 3. The inner ring wall of the ring plate 344 is connected to the bottom end of the outer side wall of the upper shell 3, preferably vertically. The outer ring wall of the ring plate 344 is flush with the outer side wall of the third ring wall 343.

[0120] Ignoring the wall thicknesses of the first ring wall 341 , the second ring wall 342 , and the third ring wall 343 , the diameter of the third ring wall 343 = the outer diameter of the ring plate 344 > the diameter of the second ring wall 342 > the diameter of the first ring wall 341 = the outer diameter of the first sealing limiter 11 > the inner diameter of the first sealing limiter 11 > the inner diameter of the ring plate 344 .

[0121] The first ring wall 341 , the second ring wall 342 , and the third ring wall 343 are respectively vertically connected to the bottom of the ring plate 344 .

[0122] The inner side wall of the first annular wall 341 is sealed to the first sealing limiter 11 , that is, the inner side wall of the first annular wall 341 is sealed to the outer annular wall of the first sealing limiter 11 , and the top of the first sealing limiter 11 abuts against the bottom of the ring plate 344 .

[0123] In order to improve the sealing between the upper shell 3 and the lower shell 4, a sealing ring 35 is provided between the upper shell 3 and the lower shell 4. Specifically, the sealing ring 35 is embedded in the assembly groove 345, and the top end of the lower shell 4 is inserted into the assembly groove 345 and abuts against the sealing ring 35.

[0124] The height of the first annular wall 341 is equal to the height of the first sealing stopper 11. The height of the second annular wall 342 is less than the height of the first annular wall 341. The height of the third annular wall 343 is greater than the height of the first annular wall 341. The thickness of the sealing ring 35 is less than the height of the second annular wall 342. This creates a well-organized connection and assembly space at the bottom of the upper housing 3, making the motor housing layout more compact and the connection between the upper housing 3 and the lower housing 4 more secure.

[0125] The buckling portion 31 is located on the third annular wall 343 . In this embodiment, the buckling portion 31 constitutes a portion of the third annular wall 343 .

[0126] In order to improve the disassembly and connectivity of the upper shell 3 and the lower shell 4, and to facilitate the assembly of the motor, the upper shell 3 is divided into two detachably connected halves along a plane passing through its central axis, namely the left upper shell 3a and the right upper shell 3b, and the retaining ring 32 and the connecting part 34 are separated into two halves.

[0127] It should be noted that the "left" and "right" in the above-mentioned upper left shell 3a and upper right shell 3b do not mean left and right in the strict sense of geometric space. They are named in this way for the convenience of describing the two halves of the upper shell 3. The same applies to the "left" and "right" in the names of the following components.

[0128] Specifically, the upper shell 3 includes a left upper shell 3a and a right upper shell 3b. The left upper shell 3a is connected to the right upper shell 3b (that is, it is connected in the direction perpendicular to the central axis of the upper shell 3), and the left upper shell 3a and the right upper shell 3b are detachably connected. The left upper shell 3a and the right upper shell 3b jointly limit the above-mentioned first cavity 1.

[0129] A left half snap ring 32a is provided on the inner side wall of the left upper shell 3a, and a right half snap ring 32b is provided on the inner side wall of the right upper shell 3b. The left half snap ring 32a and the right half snap ring 32b are connected to form the above-mentioned snap ring 32 together.

[0130] A left half connecting portion 34a is provided at the bottom end of the side wall of the left upper shell 3a, and a right half connecting portion 34b is provided at the bottom end of the side wall of the right upper shell 3b. The left half connecting portion 34a and the right half connecting portion 34b are connected to form the above-mentioned connecting portion 34. Furthermore, the left half connecting portion 34a includes a left half first ring wall 341a, a left half second ring wall 342a, a left half third ring wall 343a and a left half ring plate 344a, and the right half connecting portion 34b includes a right half first ring wall 341b, a right half second ring wall 342b, a right half third ring wall 343b and a right half ring plate 344b. The left half first ring wall 341a and the right half first ring wall 341b are connected to form the above-mentioned first ring wall 341, the left half second ring wall 342a and the right half second ring wall 342b are connected to form the above-mentioned second ring wall 342, the left half third ring wall 343a and the right half third ring wall 343b are connected to form the above-mentioned third ring wall 343, and the left half ring plate 344a and the right half ring plate 344b are connected to form the above-mentioned ring plate 344.

[0131] The top of the first cavity 1 is closed, so a closed top wall is provided on the top of the upper shell portion 3, that is, the left upper shell 3a and the right upper shell 3b are also provided with closed top walls.

[0132] The top end surface of the upper left shell 3a is provided with a snap-fit ​​portion 36, and a snap-fit ​​hole 361 is provided on the snap-fit ​​portion 36. The top end surface of the upper right shell 3b is provided with a snap-fitting rib 37 that matches the snap-fitting hole 361. When the upper left shell 3a and the upper right shell 3b are docked, the snap-fitting rib 37 is embedded in the snap-fitting hole 361, that is, the snap-fitting portion 36 extends outward from the top end surface of the upper left shell 3a, so that the snap-fitting hole 361 is located on the right side of the upper left shell 3a, and the snap-fitting hole 361 is located above the upper right shell 3b, and the snap-fitting hole 361 is opposite to the snap-fitting rib 37.

[0133] In order to further improve the connection performance between the upper left shell 3a and the upper right shell 3b and make the motor housing more stable, a left fixing portion 38 is provided at the right end of the side wall of the upper left shell 3a, and a right fixing portion 39 is provided at the left end of the side wall of the upper right shell 3b, which is compatible with the left fixing portion 38. The left fixing portion 38 and the right fixing portion 39 are provided with communicating threaded holes, and screws and studs (with matching nuts) are passed through the threaded holes to achieve further detachable connection between the upper left shell 3a and the upper right shell 3b.

[0134] In this embodiment, two snap-fit ​​portions 36 are provided on the top of the upper left shell 3a, and left fixing portions 38 are respectively provided at the two right ends of the side wall of the upper left shell 3a. At the same time, two clips 37 adapted to the snap-fit ​​portions 36 are provided on the top of the upper right shell 3b, and right fixing portions 39 adapted to the left fixing portions 38 are respectively provided at the two right ends of the side wall of the upper right shell 3b.

[0135] In this embodiment, the first air inlet 101 is located on the side wall of the upper right housing 3b, and two first air outlets 102 are located on the side walls of the upper left housing 3a and the upper right housing 3b, respectively, with the two first air outlets 102 arranged side by side. Two exhaust ducts 33 are located outside the two first air outlets 102, and are connected to the outer side walls of the upper left housing 3a and the upper right housing 3b, respectively.

[0136] It should be noted that the positions of the first air inlet 101 , the first air outlet 102 , and the exhaust pipe 33 are not limited to the arrangement of this embodiment.

[0137] In this embodiment, the left half third annular wall 343a of the left upper shell 3a is provided with two buckling portions 31; the right half third annular wall 343a of the right upper shell 3b is provided with two buckling portions 31.

[0138] In addition, the upper housing 3 is provided with a connecting bracket 310 for assembling the motor housing into the cleaning device. Specifically, two connecting brackets 310 are provided, and the two connecting brackets 310 are arranged opposite each other on the side walls of the upper housing 3. In this embodiment, the two connecting brackets 310 are respectively arranged on the side walls of the left upper housing 3a and the right upper housing 3b, and the two connecting brackets 310 are arranged opposite each other.

[0139] A second sealing limiter 21 is provided in the second cavity 2. The second sealing limiter 21 is located between the second air inlet 201 and the second air outlet 202. The second sealing limiter 21 has a ventilation opening 211 arranged opposite to the second air inlet 201. The second sealing limiter 21 is sealed and connected to the cavity wall of the second cavity 2.

[0140] When the motor is assembled into the motor housing, the second sealing limiter 21 is sealed and connected to the motor, and the air inlet is connected to the second air inlet 201 through the vent 211. At this time, the second sealing limiter 21 and the motor divide the second cavity 2 into two non-communicating cavities in the front and back, namely the air inlet cavity and the air outlet cavity. The air inlet cavity is connected to the second air inlet 201 and the motor air inlet, and the air outlet cavity is connected to the second air outlet 202 and the motor air outlet, so that the motor can form the negative pressure required for the cleaning equipment.

[0141] The lower shell portion 4 is provided with the second air inlet 201 and the second air outlet 202 . Specifically, the second air inlet 201 is located on the bottom wall of the lower shell portion 4 , and the second air outlet 202 is located on the side wall of the lower shell portion 4 .

[0142] To facilitate gas entry into the second cavity 2, the bottom wall of the lower shell portion 4 is inclined. Specifically, the angle between the bottom wall of the lower shell portion 4 and the central axis of the lower shell portion 4 is α, where α is less than 90°. The inclined bottom wall of the lower shell portion 4 provides a larger intake area relative to a plane perpendicular to the central axis, thereby increasing the flow of gas entering the second cavity 2. Preferably, the angle is 30° ≤ α ≤ 75°. This prevents the bottom wall of the lower shell portion 4 from being too steep, thereby hindering gas intake, while also preventing it from being too flat, thereby increasing the intake area. In this embodiment, α = 60°.

[0143] It should be noted that the upper shell portion 3 , the lower shell portion 4 and the central axis of the motor housing coincide with each other.

[0144] An assembly portion 42 for assembling the second sealing limiter 21 is provided in the lower shell 4 . The second air inlet 201 is located below the assembly portion 42 , and the second air outlet 202 is located above the bottom of the assembly portion 42 .

[0145] The bottom of the assembly part 42 is sealed with the second sealing limiter 21, and a through hole 421 adapted to the vent 211 is provided at the bottom of the assembly part 42. The gas entering the motor housing from the second air inlet 201 enters the motor through the through hole 421 and the vent 211 and enters the motor from the motor air inlet.

[0146] The assembly portion 42 includes an assembly ring wall 422, which is arranged around the outside of the through hole 421 and is perpendicular to the bottom of the assembly portion 42. The inner wall of the assembly ring wall 422 is sealed with the outer wall of the second sealing limiter 21 to ensure that all the gas entering the lower shell portion 4 is introduced into the motor air inlet. A gap is provided between the outer wall of the assembly ring wall 422 and the inner wall of the lower shell portion 4 to ensure that there is space for the gas discharged from the motor outlet to flow.

[0147] When the motor is assembled to the motor housing, the front end of the motor is sealed with the second sealing limiter 21 to ensure that the gas entering from the second air inlet 201 is all introduced into the motor. At this time, the bottom wall of the lower shell part 4, the side wall of the lower shell part 4, the bottom of the assembly part 42, the bottom of the second sealing limiter 21, and the motor limit the above-mentioned air inlet cavity. The side wall of the lower shell part 4, the assembly part 42, the second sealing limiter 21, the motor, and the first sealing limiter 11 jointly limit the above-mentioned air outlet cavity. The air inlet cavity is located below the air outlet cavity.

[0148] The first sealing limiter 11 and the second sealing limiter 21 are made of rubber. On the one hand, they can better achieve a sealed connection. On the other hand, when the motor rotates, they can alleviate the vibration generated by the motor, so that the motor housing has a good vibration reduction effect.

[0149] In order to discharge the gas in the lower shell part 4 as quickly as possible, the outer wall of the lower shell part 4 is provided with an exhaust portion 43, and the exhaust portion 43 is connected to the second exhaust port 202. Specifically, the shape of the exhaust portion 43 is similar to a "U" shape, and a fluid channel similar to a "U" shape that is adapted to its shape is provided inside, and the fluid channel is connected to the second exhaust port 202.

[0150] Furthermore, the exhaust portion 43 includes a total exhaust port 431 located at the bottom of the "U" shape and a first exhaust port 432 and a second exhaust port 433 located at both ends of the "U" shape. The total exhaust port 431, the first exhaust port 432 and the second exhaust port 433 are connected to the above-mentioned fluid channel, and the total exhaust port 431 is surrounded on the outside of the second exhaust port 202 and is connected to the second exhaust port 202.

[0151] The gas exhausted from the second exhaust port 202 enters the exhaust portion 43 through the main exhaust port 431 , and is divided into two paths and discharged from the first exhaust port 432 and the second exhaust port 433 , so that the gas exhausted from the motor can be quickly discharged from the motor housing.

[0152] In addition, compared with the existing single exhaust channel, the exhaust portion 43 of the present invention forms a first exhaust channel between the first exhaust port 432 and the main exhaust port 431, and forms a second exhaust channel between the second exhaust port 433 and the main exhaust port 431, which can reduce the pressure of the single exhaust channel and make the second cavity 2 exhaust outward more smoothly.

[0153] The fluid channel is parallel to the central axis of the motor housing, and the exhaust portion 43 is in close contact with the lower housing portion 4 to ensure exhaust stability of the exhaust portion 43 .

[0154] Furthermore, guide portions 434 are respectively provided on the outer sides of the two corners of the "U" shape of the exhaust portion 43, and the two guide portions 434 are respectively opposite to the first exhaust port 432 and the second exhaust port 433. At the same time, the two guide portions 434 are opposite to the main exhaust port 431, so as to quickly guide the gas entering from the main exhaust port 431 to the first exhaust port 432 and the second exhaust port 433, thereby accelerating the flow rate of the gas in the exhaust portion 43.

[0155] In this embodiment, the first exhaust port 432 and the second exhaust port 433 are located below the main exhaust port 431 so that the gas exhausted from the lower shell 4 is exhausted downward to avoid interference with the gas exhausted from the exhaust pipe 33 of the upper shell 3.

[0156] Example 2

[0157] This embodiment discloses a cleaning device, such as Figures 20 to 24 As shown, it includes the motor housing provided in embodiment 1.

[0158] Compared with the prior art, the cleaning device provided in this embodiment has the beneficial effects of the motor housing provided in the first embodiment, which will not be described in detail here.

[0159] The above-mentioned cleaning equipment also includes a sewage tank 5, a motor (not shown in the figure) and a main body housing 6. The motor can be removably assembled in the motor housing. The motor housing is located above the sewage tank 5, and the second air inlet 201 is connected to the sewage tank 5. The motor housing and the sewage tank 5 can be removably assembled in the main body housing 6.

[0160] The motor includes a front end and a rear end. The front end includes an air inlet, an air outlet, and an impeller. The front end is located within the second cavity 2, and the rear end is located within the first cavity 1. The air inlet is connected to the second air inlet 201, and the air outlet is connected to the second air outlet 202.

[0161] After the motor is assembled into the motor housing, the motor is sealed and connected to the first sealing limiter 11, so that the first cavity 1 and the second cavity 2 are no longer connected. The first cavity 1 is used to dissipate heat for the motor, and the second cavity 2 is used to form the negative pressure required for the cleaning equipment for the motor.

[0162] Furthermore, the front end of the motor is sealedly connected to the second sealing limiter 21, dividing the second cavity 2 into an air inlet cavity and an air outlet cavity that are not connected front to back, so as to ensure that the motor can form the negative pressure of the cleaning equipment.

[0163] The first exhaust port 432 and the second exhaust port 433 are in communication with the space inside the main body housing 6 to discharge the gas into the main body housing 6. An air outlet is provided on the main body housing 6, and the gas entering the main body housing 6 is discharged through the air outlet.

[0164] An exhaust grille 61 is provided on the main body housing 6, and the exhaust pipe 33 is connected to the exhaust grille 61 through the air guide pipe 7 to discharge the gas and heat in the upper housing 3 out of the cleaning device.

[0165] The shape of the air duct 7 is similar to a "Z" shape. Specifically, the air duct 7 includes a first duct 71, a curved pipe 73 and a second duct 72 connected in sequence. The first duct 71 and the second duct 72 are arranged in parallel. The first duct 71 and the second duct 72 are connected through the curved pipe 73, that is, one end of the first duct 71 is connected to the exhaust duct 33, the other end of the first duct 71 is connected to one end of the curved pipe 73, one end of the second duct 72 is connected to the other end of the curved pipe 73, and the other end of the second duct 22 is connected to the exhaust grille 61.

[0166] The provision of the curved pipe 73 can effectively reduce the exhaust noise generated when the upper shell 3 exhausts air toward the exhaust grille 61 , thereby achieving a noise reduction effect.

[0167] The angle formed between the bend pipe 73 and the first and second conduits 71 and 72 is β, 90°<β<180°, so that the bend pipe 73 does not affect the exhaust flow rate as much as possible while achieving the effect of noise reduction.

[0168] In this embodiment, β=145°.

[0169] Furthermore, the connection between the bend pipe 73 and the first conduit 71 and the second conduit 72 adopts an arc-shaped transition to make the gas flow more smoothly in the air guide pipe 7 and to prevent the bend pipe 73 from affecting the exhaust flow rate as much as possible.

[0170] In this embodiment, two exhaust grilles 61 are provided on the main body housing 6 , and two air guide pipes 7 are provided in the cleaning device so that the two exhaust grilles 61 are connected to the two exhaust pipes 33 .

[0171] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A motor housing for assembling a motor of a cleaning device, characterized in that: include: A first cavity (1) for assembling the rear end of the motor, the first cavity (1) being provided with a first air inlet (101) and a first air outlet (102); A second cavity (2) for assembling the front end of the motor, the second cavity (2) being provided with a second air inlet (201) and a second air outlet (202); Wherein, the front end portion is provided with an air inlet and an air outlet; The second air inlet (201) is in communication with the air inlet; The second air outlet (202) is in communication with the air outlet; At least a portion of the second air outlet (202) is opposite to the air outlet; The first cavity (1) is communicated with the second cavity (2), and a first sealing limiter (11) is provided at the connection between the first cavity (1) and the second cavity (2); The first sealing limiter (11) is sealed and connected to the motor; A second sealing limiter (21) is provided in the second cavity (2), and the second sealing limiter (21) is located between the second air inlet (201) and the second air outlet (202); The second sealing stopper (21) is provided with a ventilation opening (211) arranged opposite to the second air inlet (201), so that the second sealing stopper (21) is sealedly connected to the motor, and the air inlet is communicated with the second air inlet (201) through the ventilation opening (211).

2. The motor housing according to claim 1, characterized in that The bottom of the first cavity (1) is connected to the top of the second cavity (2), and the first sealing limiter (11) is located at the bottom of the first cavity (1); The first sealing stopper (11) is provided with a passage opening (111) for the rear end portion of the motor to pass through; A limiting groove (112) is provided at the bottom of the first sealing limiting member (11), and the motor is provided with a positioning protrusion adapted to the limiting groove (112).

3. The motor housing according to claim 2, characterized in that It also includes an upper shell portion (3) and a lower shell portion (4), wherein the upper shell portion (3) encloses the first cavity (1), and the lower shell portion (4) encloses the second cavity (2); The upper shell portion (3) is located above the lower shell portion (4), and the upper shell portion (3) and the lower shell portion (4) are detachably connected; The upper shell (3) is provided with the first air inlet (101) and the first air outlet (102); The lower shell portion (4) is provided with the second air inlet (201) and the second air outlet (202); The first sealing limiter (11) is annular in shape, the outer ring wall of the first sealing limiter (11) is sealedly connected to the upper shell (3), and the inner ring wall of the first sealing limiter (11) is sealedly connected to the motor.

4. The motor housing according to claim 3, characterized in that The bottom of the upper shell (3) is open, the top of the lower shell (4) is open, and the bottom of the upper shell (3) is butted against the top of the lower shell (4); A buckling portion (31) is provided at the bottom of the upper shell portion (3); The lower shell portion (4) is provided with a protruding portion (41) adapted to the buckling portion (31).

5. The motor housing according to claim 4, characterized in that: The second air inlet (201) is located on the bottom wall of the lower shell portion (4); The second air inlet (201) is located on the side wall of the lower shell portion (4); An exhaust portion (43) is provided on the outer side wall of the lower shell portion (4), and the exhaust portion (43) is in communication with the second air outlet (202).

6. The motor housing according to claim 4, characterized in that The first air inlet (101) and the first air outlet (102) are located on the side wall of the upper shell (3); The first air inlet (101) is located below the first air outlet (102); An exhaust pipe (33) is provided on the outer side wall of the upper shell portion (3), and the exhaust pipe (33) is arranged around the outside of the first exhaust port (102).

7. The motor housing according to claim 6, characterized in that An exhaust fan (331) is provided in the exhaust pipe (33).

8. The motor housing according to claim 7, characterized in that A connecting portion (34) detachable from the lower shell portion (4) is provided at the bottom end of the side wall of the upper shell portion (3), and the connecting portion (34) is sealedly connected to the first sealing limiter (11).

9. The motor housing according to claim 8, characterized in that The upper shell portion (3) comprises a left upper shell (3a) and a right upper shell (3b), and the left upper shell (3a) and the right upper shell (3b) are docked to jointly define the first cavity (1); A left half-connecting portion (34a) is provided at the bottom end of the side wall of the left upper shell (3a), and a right half-connecting portion (34b) is provided at the bottom end of the side wall of the right upper shell (3b); the left half-connecting portion (34a) and the right half-connecting portion (34b) are butted together to form the connecting portion (34); The left upper shell (3a) and the right upper shell (3b) are detachably connected.

10. The motor housing according to claim 9, characterized in that The top end surface of the left upper shell (3a) is provided with a snap-fit ​​portion (36); The buckle portion (36) is provided with a buckle hole (361); The top end surface of the right upper shell (3b) is provided with a clamping rib (37) adapted to the clamping hole (361).

11. The motor housing according to any one of claims 1 to 10, characterized in that: The first sealing limiter (11) and the second sealing limiter (21) are made of rubber.

12. A cleaning device, characterized in that: The motor comprises a motor housing and a motor as claimed in any one of claims 1 to 11, wherein the motor is assembled in the motor housing.

13. The cleaning device according to claim 12, characterized in that It also includes a sewage tank (5) and a main body housing (6), wherein the motor housing and the sewage tank (5) are detachably assembled in the main body housing (6); The motor housing is located above the sewage tank (5), and the second air inlet (201) is in communication with the sewage tank (5); The main engine housing (6) is provided with an exhaust grille (61), and the exhaust grille (61) is connected to the exhaust pipe (33) of the motor housing through an air guide pipe (7).

14. The cleaning device according to claim 13, characterized in that The airway tube (7) comprises a first conduit (71), a second conduit (72) and a curved tube (73); the first conduit (71) is parallel to the second conduit (72); and the first conduit (71) and the second conduit (72) are connected via the curved tube (73).

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