Filter cartridge, filter assembly and dust collector

Abstract

The present invention relates to a filter cartridge, a filter assembly and a vacuum cleaner, and belongs to the technical field of household appliances, and is used to solve the problem of poor heat dissipation effect of existing vacuum cleaners. The filter cartridge of the present invention is provided with at least one filter portion and at least one closed portion on the side wall of the filter cartridge, and an air inlet is provided at the bottom of the filter cartridge; the dust-laden airflow enters the filter cartridge from the air inlet, is filtered and dust-removed by the filter portion, and is then discharged from the filter portion. The filter cartridge of the present invention is provided with at least one filter portion and at least one closed portion, and the airflow is guided by providing the closed portion so that the airflow can only be discharged from the filter portion, and then by adjusting the direction of the closed portion of the filter cartridge, the airflow is first directed to the position where the power supply assembly is located and then flows to the motor assembly. The heat generated by the power supply assembly is discharged along with the airflow, thereby improving the heat dissipation effect of the vacuum cleaner.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a filter cartridge, a filter assembly and a vacuum cleaner. Background Art

[0002] In existing vacuum cleaners, the airflow after being filtered by the filter cartridge is directly directed to the motor assembly directly behind. The airflow cannot cool the power supply assembly, resulting in poor heat dissipation effect of the vacuum cleaner, which in turn affects the user comfort and life of the vacuum cleaner. Summary of the Invention

[0003] In view of the above analysis, the embodiments of the present invention aim to provide a filter cartridge, a filter assembly, and a vacuum cleaner to solve the problem of poor heat dissipation effect of existing vacuum cleaners.

[0004] In one aspect, the present invention provides a filter cartridge having at least one filter portion and at least one sealing portion provided on a side wall thereof, and an air inlet provided at the bottom thereof;

[0005] The dust-laden airflow enters the filter cartridge from the air inlet, is filtered and dust-removed by the filter section, and then discharged from the filter section.

[0006] Furthermore, the number of the filtering parts is the same as the number of the sealing parts.

[0007] Furthermore, the filtering portion and the sealing portion are distributed alternately, and the heights of the filtering portion and the sealing portion are equal to the height of the side wall of the filter cartridge.

[0008] Furthermore, the filter cartridge includes a cartridge body, a top cover and a bottom cover, wherein the top cover and the bottom cover are respectively provided at the upper and lower ends of the cartridge body;

[0009] The air inlet is located on the bottom cover;

[0010] The filtering part and the sealing part are surrounded to form a cylindrical body.

[0011] Furthermore, a groove is provided on the top end surface of the top cover, and an assembly hole is provided at the bottom of the groove.

[0012] Furthermore, a sealing ring is provided on the outer side of the top cover.

[0013] In another aspect, the present invention provides a filter assembly comprising the filter cartridge described above.

[0014] Furthermore, the filter assembly also includes an upper cover and a hand plate. The upper cover is detachably connected to the filter cartridge. The hand plate is connected to the upper cover, and the upper cover is located above the filter cartridge. The hand plate is located above the upper cover, and a finger cavity for finger holding is formed between the hand plate and the upper cover.

[0015] Furthermore, the handboard is an arched board.

[0016] Furthermore, the upper cover includes a front end and a rear end, the bottom end surface of the front end is provided with an assembly column, the assembly column can be inserted into the assembly hole of the top cover, and the top end surface of the front end is provided with a concave area, the concave area and the hand plate form a finger cavity;

[0017] A closed portion and a rear end portion of the filter cartridge are oriented in the same direction.

[0018] Furthermore, the front end portion is also provided with a mounting belt, which is arranged around the outside of the concave area.

[0019] Furthermore, the handboard includes a handholding portion, a middle portion and a lap portion from front to back;

[0020] The hand plate and the inner concave area form a finger receiving cavity;

[0021] The overlapping portion is located behind the rear end portion.

[0022] In another aspect, the present invention provides a vacuum cleaner comprising the above-mentioned filter assembly.

[0023] Furthermore, the vacuum cleaner also includes a dust cup, a suction pipe, a handle assembly, an upper shell, a rear shell, a power supply assembly and a motor assembly;

[0024] The filter assembly and the power supply assembly are installed in the upper shell, the motor assembly is installed in the rear shell, and the suction pipe is connected to the dust cup body;

[0025] The upper shell is located directly above the dust collecting cup body, the rear shell is located directly behind the upper shell, and the handle assembly is located directly behind the dust collecting cup body and directly below the rear shell.

[0026] Furthermore, the upper shell is provided with an assembly cavity for assembling the filter cartridge of the filter assembly;

[0027] A connecting through hole is provided on the bottom end surface of the assembly cavity, which can connect the dust cup body and the assembly cavity, and the connecting through hole is sealed and connected to the air inlet of the filter cartridge;

[0028] An assembly through hole is provided on the top end surface of the assembly cavity, and the assembly through hole seals and connects the sealing ring of the filter cartridge;

[0029] An annular channel for gas circulation is provided on the side wall of the assembly cavity and the outer wall of the filter cartridge;

[0030] An air outlet connected to the motor assembly of the rear shell is provided on the side wall of the assembly cavity.

[0031] Furthermore, a closed portion of the filter cartridge is arranged opposite to the air outlet, and the closed portion is projected in the direction of the air outlet to completely cover the air outlet.

[0032] Furthermore, the power supply assembly is installed between the side wall of the assembly cavity and the side wall of the upper shell.

[0033] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0034] (1) The filter cartridge is provided with at least one filter portion and at least one closed portion. The closed portion is provided to guide the airflow so that the airflow can only be discharged from the filter portion. Furthermore, by adjusting the direction of the closed portion of the filter cartridge, the airflow is first directed to the position where the power supply component is located and then flows to the motor component. The heat generated by the power supply component is discharged with the airflow, thereby improving the heat dissipation effect of the vacuum cleaner;

[0035] (2) The upper cover and the hand plate adopt a non-centrally symmetrical structure, which not only facilitates the installation and positioning of the filter assembly, but also prevents the filter assembly from rotating during use, which would affect the orientation of the filter cartridge sealing portion;

[0036] (3) A finger cavity is provided between the upper cover and the handle, which is convenient for users to hold and take out the filter assembly, thus improving the user comfort;

[0037] (4) The filter assembly and the assembly cavity are tightly fitted only by a sealing ring, without any other fastening methods, making it more convenient and quick to take and put the filter assembly, thereby improving the assembly efficiency of the filter assembly.

[0038] 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

[0039] 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.

[0040] Figure 1 is a structural diagram of the filter assembly in a specific embodiment (1);

[0041] Figure 2 FIG2 is a structural diagram of a filter assembly in a specific embodiment;

[0042] Figure 3 is a front view of a filter assembly in a specific embodiment;

[0043] Figure 4 is a rear view of the filter assembly in a specific embodiment;

[0044] Figure 5is a top view of a filter assembly in a specific embodiment;

[0045] Figure 6 1 is an exploded view of the filter assembly in a specific embodiment;

[0046] Figure 7 2 is an exploded view of the filter assembly in a specific embodiment;

[0047] Figure 8 is a partial cross-sectional view of a filter assembly in a specific embodiment (I);

[0048] Figure 9 It is a partial cross-sectional view of the filter assembly in a specific embodiment (II);

[0049] Figure 10 is a structural diagram of a vacuum cleaner in a specific embodiment;

[0050] Figure 11 is a side view of a vacuum cleaner in a specific embodiment;

[0051] Figure 12 is a partial cross-sectional view of a vacuum cleaner in a specific embodiment;

[0052] Figure 13 This is a structural diagram of the vacuum cleaner after the filter assembly is removed in a specific embodiment.

[0053] Reference numerals:

[0054] 1-Filter cartridge; 101-Air inlet; 11-Filter unit; 12-Closing unit; 13-Top cover; 131-Upper assembly groove; 132-Groove; 133-Assembly hole; 134-Transition block; 135-Ring; 136-Positioning protrusion; 14-Bottom cover; 141-Lower assembly groove; 15-Sealing ring; 16-Fixed clip;

[0055] 2 - Upper cover; 21 - Front end; 211 - Mounting column; 212 - Recessed area; 212a - First support ring wall; 212b - Second support ring wall; 212c - Third support ring wall; 213 - Mounting strap; 213a - Fourth support ring wall; 214 - Clamping plate; 215 - Lower mounting stud; 22 - Rear end; 221 - Upper hook; 3 - Handle plate; 31 - Handle portion; 32 - Middle portion; 33 - Overlap portion; 34 - Front baffle; 35 - Upper mounting stud; 36 - Lower hook; 37 - Engaging rib; 371 - Clamping slot; 38 - Stabilizing rib;

[0056] 4-dust cup body; 5-suction pipe; 6-handle assembly; 7-upper shell; 71-power supply assembly; 72-assembly cavity; 721-connection through hole; 722-assembly through hole; 723-air outlet; 724-bottom cover groove; 73-upper cover groove; 8-rear shell; 81-motor assembly; 82-overlap groove. DETAILED DESCRIPTION

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] Example 1

[0062] This embodiment provides a filter cartridge, such as Figures 1-9 As shown, the side wall of the filter cartridge 1 is provided with at least one filter portion 11 and at least one closed portion 12, and the bottom of the filter cartridge 1 is provided with an air inlet 101. The dust-laden airflow enters the filter cartridge 1 from the air inlet 101, and is filtered and dust-removed by the filter portion 11 before being discharged from the filter portion 11.

[0063] Compared with the prior art, the filter cartridge 1 provided in this embodiment is provided with at least one filter portion 11 and at least one closed portion 12. The closed portion 12 is provided to guide the airflow so that the airflow can only be discharged from the filter portion 11. Then, by adjusting the direction of the closed portion 12 of the filter cartridge 1, the airflow is first guided to the position where the power supply component is located and then flows to the motor component. The heat generated by the power supply component is discharged with the airflow, thereby improving the heat dissipation effect of the vacuum cleaner.

[0064] The filter cartridge 1 includes a cartridge body, a top cover 13 and a bottom cover 14. The cartridge body is a hollow structure with open ends. The top cover 13 and the bottom cover 14 are respectively covered on the upper and lower ends of the cartridge body. The air inlet 101 is opened on the bottom cover 14. The cartridge body is formed by connecting the filter part 11 and the closing part 12 on both sides. The dust-laden airflow enters the cartridge body from the air inlet 101. After being filtered and dust-removed by the filter part 11, the airflow is discharged from the filter part 11 to the outside of the cartridge body. The filtered dust is discharged from the cartridge body through the air inlet 101 and falls into the dust collecting cup of the vacuum cleaner.

[0065] In order to improve the stability of the filter cartridge 1, the cartridge body is clamped between the top cover 13 and the bottom cover 14. Specifically, the top cover 13 is provided with an upper assembly groove 131 opening downward, and the bottom cover 14 is provided with a lower assembly groove 141 opening upward. The upper end of the cartridge body is clamped in the upper assembly groove 131, and the lower end of the cartridge body is clamped in the lower assembly groove 141. Therefore, the upper assembly groove 131 is adapted to the upper end of the cartridge body, and the lower assembly groove 141 is adapted to the lower end of the cartridge body.

[0066] A groove 132 is provided downward on the top end surface of the top cover 13, and an assembly hole 133 is provided at the bottom of the groove 132. The assembly hole 133 is communicated with the hollow cavity in the cylinder (the hollow cavity is a cavity with upper and lower openings surrounded by the cylinder), and a thread is provided in the assembly hole 133. The filter cartridge 1 is detachably connected to other components of the filter assembly through the assembly hole 133 of the top cover 13 and screws.

[0067] Specifically, groove 132 is a stepped groove, and assembly hole 133 is provided at the lowest point of the stepped groove. In this embodiment, groove 132 is a three-step groove, comprising, from top to bottom, a first-step groove, a second-step groove, and a third-step groove. The bottom areas of the first-step groove, the second-step groove, and the third-step groove decrease in sequence, while the depths of the first-step groove, the second-step groove, and the third-step groove increase in sequence. Assembly hole 133 is provided at the center of the bottom of the third-step groove.

[0068] Furthermore, in this embodiment, to facilitate assembly of the filter cartridge 1 with other components of the filter assembly, a transition block 134 is provided in the second-step groove. The upper end of the transition block 134 is connected to the bottom of the first-step groove, and the lower end of the transition block 134 is connected to the sidewall of the third-step groove. A transition arcuate surface is formed between the upper and lower ends of the transition block 134, connecting the bottom of the first-step groove and the sidewall of the third-step groove. The transition arcuate surface is tangent to the bottom of the first-step groove and the sidewall of the third-step groove. It should be noted that the bottom end surface of the transition block 134 is connected to the bottom of the second-step groove, and the surface of the transition block 134 away from the centerline of the filter cartridge 1 is connected to the sidewall of the second-step groove.

[0069] The downward projection of the transition block 134 falls completely on the bottom of the second-step groove, and the ratio of the downward projection area of ​​the transition block 134 to the bottom area of ​​the second-step groove is not greater than 1:3. In this embodiment, the ratio of the downward projection area of ​​the transition block 134 to the bottom area of ​​the second-step groove is not greater than 1:6.

[0070] In order to facilitate the assembly of the filter cartridge 1 and to improve the sealing effect between the filter cartridge 1 and the vacuum cleaner, a sealing ring 15 is provided on the outside of the top cover 13. Specifically, the sealing ring 15 is sleeved on the outside of the side wall of the top cover 13, that is, the inner wall surface of the sealing ring 15 is in contact with the outer wall surface of the top cover 13.

[0071] In order to better fix the sealing ring 15 and prevent the sealing ring 15 from falling off the top cover 13, a protruding edge 135 is provided outward at the bottom end of the side wall of the top cover 13. Specifically, the protruding edge 135 is perpendicular to the side wall of the top cover 13, and the bottom end surface of the protruding edge 135 is flush with the bottom end surface of the side wall of the top cover 13. The sealing ring 15 is located above the protruding edge 135, and the bottom end surface of the sealing ring 15 is in contact with the top end surface of the protruding edge 135, thereby preventing the sealing ring 15 from sliding downward.

[0072] Furthermore, a positioning protrusion 136 is provided on the side wall of the top cover 13, and the positioning protrusion 136 is located above the ridge 135. The inner side wall of the sealing ring 15 is provided with a positioning groove that matches the positioning protrusion 136. When the sealing ring 15 is mounted on the side wall of the top cover 13, the positioning protrusion 136 can be embedded in the positioning groove to prevent the sealing ring 15 from sliding up and down and affecting the installation and sealing of the filter cartridge 1. It should be noted that the positioning protrusion 136 can be an annular protrusion, in which case the positioning protrusion 136 is arranged around the side wall of the top cover 13; the positioning protrusion 136 can also be a cylindrical or conical protrusion, in which case multiple positioning protrusions 136 are provided on the side wall of the top cover 13, and the positioning protrusions 136 are evenly distributed on the side wall of the top cover 13.

[0073] The cylinder includes at least one filter part 11 and at least one closed part 12, and the number of filter parts 11 is the same as the number of closed parts 12. The two side surfaces of the filter part 11 are respectively connected to the side surfaces of the closed part 12, and the two side surfaces of the closed part 12 are respectively connected to the side surfaces of the filter part 11, thereby forming a hollow cylinder.

[0074] Assume that the number of filter sections 11 and enclosing sections 12 is N. When N=1, the two side surfaces of the filter section 11 are connected to the two side surfaces of the enclosing section 12 to form a cylindrical body. When N≥2, the filter sections 11 are alternately distributed between the enclosing sections 12 (or the enclosing sections 12 are alternately distributed between the filter sections 11), with the two side surfaces of the filter section 11 connected to different side surfaces of the enclosing section 12, and the two side surfaces of the enclosing section 12 connected to different side surfaces of the filter section 11, ultimately forming a cylindrical body. In this embodiment, the number of filter sections 11 and enclosing sections 12 is two, with the two filter sections 11 and the two enclosing sections 12 disposed opposite each other.

[0075] It should be noted that the side surface of the filter portion 11 and the side surface of the adjacent sealing portion 12 are sealed to ensure that there is no gap therebetween, so that the airflow can only be discharged from the filter portion 11 .

[0076] The filter portion 11 extends from the top end surface of the cylinder to the bottom end surface of the cylinder. Similarly, the closing portion 12 also extends from the top end surface of the cylinder to the bottom end surface of the cylinder, that is, the top end surface and the bottom end surface of the filter portion 11 are flush with the top end surface and the bottom end surface of the closing portion 12, and together they form the top end surface and the bottom end surface of the cylinder.

[0077] To ensure the filtration effectiveness of the filter cartridge 1, the ratio of the area of ​​the filter portion 11 to the area of ​​the enclosing portion 12 must be no less than 1:1. In this embodiment, the ratio of the area of ​​the filter portion 11 to the area of ​​the enclosing portion 12 is 3:1. It should be noted that the area of ​​the filter portion 11 refers to the area of ​​the sidewall of the cartridge body, and can also be understood as the area of ​​the filter portion 11 after ignoring its thickness. The same applies to the area of ​​the enclosing portion 12.

[0078] The filter portion 11 is made of a material having a filtering effect such as filter hepa or filter sponge; the sealing portion 12 is made of an airtight material that is not breathable.

[0079] In order to better stabilize the filter portion 11 , the filter portion 11 is fixedly clamped in the upper assembly groove 131 and the lower assembly groove 141 by a fixing clip 16 . The fixing clip 16 is located on the inner side wall of the filter portion 11 near the left and right side surfaces.

[0080] In order to ensure the air intake of the filter cartridge 1 , the ratio of the area of ​​the air inlet 101 to the area of ​​the bottom cover 14 is not less than 3:5. It should be noted that the lower assembly groove 141 is arranged around the outside of the air inlet 101 .

[0081] Exemplarily, the barrel is a cylinder, i.e., a cylindrical barrel, and the filter portion 11 and the enclosing portion 12 have the same thickness. After ignoring the thickness, the filter portion 11 and the enclosing portion 12 are rectangular in shape, the height of the filter portion 11 and the enclosing portion 12 is the same as the height of the barrel, and the sum of the widths of all the filter portions 11 and the enclosing portion 12 is equal to the circumference of the barrel. The cross-sectional shape of the top cover 13 is circular, and the groove 132 is a circular stepped groove. The radius of the first-step groove is greater than the radius of the second-step groove, the radius of the second-step groove is greater than the radius of the third-step groove, the radius of the first-step groove is smaller than the radius of the side wall of the top cover 13, and the radius of the ridge 135 is greater than the radius of the side wall of the top cover 13. The cross-sectional shape of the bottom cover 14 is circular, and the air inlet 101 is a circular opening. In order to ensure the air intake of the filter barrel 1, ignoring the thickness of the inner wall of the lower assembly groove 141, the diameter of the air inlet 101 is equal to the inner diameter of the barrel.

[0082] Example 2

[0083] This embodiment provides a filter component, such as Figures 1-9 As shown, in addition to the filter cartridge 1 provided in Example 1, it also includes an upper cover plate 2 and a hand plate 3. The upper cover plate 2 is detachably connected to the top cover 13 of the filter cartridge 1. The hand plate 3 is connected to the upper cover plate 2, and the upper cover plate 2 is located above the top cover 13. The hand plate 3 is located above the upper cover plate 2. A finger cavity for holding fingers is formed between the hand plate 3 and the upper cover plate 2, so that the user can hold and take the filter component.

[0084] The upper cover plate 2 includes a front end portion 21 and a rear end portion 22 . The rear end portion 22 is located behind the front end portion 21 , that is, the front end of the rear end portion 22 is connected to the rear end of the front end portion 21 .

[0085] The bottom of the front end portion 21 is provided with an assembly post 211. The bottom end surface of the assembly post 211 is provided with a threaded blind hole. The assembly post 211 can be inserted into the groove 132 of the filter cartridge 1, and the threaded blind hole is connected to the assembly hole 133. Specifically, the assembly post 211 can be inserted into the third-step groove. The transition block 134 facilitates the insertion of the assembly post 211 into the third-step groove and serves as a guide and positioning. In this embodiment, the diameter of the assembly post 211 is equal to the diameter of the third-step groove. The length of the assembly post 211 is greater than the depth of the third-step groove and less than or equal to the depth of the groove 132. The threaded blind hole of the assembly post 211 coincides with the central axis of the assembly hole 133. A screw (or stud) is screwed into the assembly hole 133 and the threaded blind hole of the assembly post 211 to achieve a detachable connection between the upper cover plate 2 and the filter cartridge 1. It should be noted that the diameter of the threaded blind hole of the assembly post 211 is not greater than the diameter of the assembly hole 133. In this embodiment, the two diameters are equal.

[0086] The center of the top end surface of the front end portion 21 is recessed downward to form a concave area 212. The bottom end surface of the concave area 212 (i.e., the bottom end surface of the front end portion 21 corresponding to the concave area 212) can be embedded in the groove 132 of the top cover 13 of the filter cartridge 1. Furthermore, to ensure the stability between the upper cover plate 2 and the filter cartridge 1 and prevent the upper cover plate 2 from tilting, a supporting ring wall is provided on the bottom end surface of the concave area 212. The supporting ring wall is located between the bottom end surface of the concave area 212 and the top end surface of the top cover 13, providing support and stability for the front end portion 21. Specifically, the bottom end surface of the concave area 212 is provided with a first support ring wall 212a, a second support ring wall 212b and a third support ring wall 212c in sequence from the center to the outside. The first support ring wall 212a is located between the bottom end surface of the concave area 212 and the bottom of the second-step groove, the second support ring wall 212b is located between the bottom end surface of the concave area 212 and the bottom of the first-step groove, and the third support ring wall 212c is located between the bottom end surface of the concave area 212 and the top end surface of the sealing ring 15.

[0087] In this embodiment, the first support ring wall 212a, the second support ring wall 212b and the third support ring wall 212c are circular ring walls, the centers of the three are located on the center line of the filter cartridge 1, and the height of the first support ring wall 212a is adapted to the depth of the second-step groove (except that the height of the first support ring wall 212a opposite to the transition block 134 changes with the transition block 134, the height of the first support ring wall 212a in other places is equal to the depth of the second-step groove, and the sum of the height of the first support ring wall 212a opposite to the transition block 134 and the height of the transition block 134 at the opposite location is equal to the depth of the second-step groove). The diameter of the support ring wall 212a is larger than the diameter of the third-step groove and smaller than the diameter of the second-step groove; the height of the second support ring wall 212b is equal to the depth of the first-step groove, and the diameter of the second support ring wall 212b is equal to the diameter of the first-step groove, that is, the outer wall surface of the second support ring wall 212b is in contact with the side wall of the first-step groove; the diameter of the third support ring wall 212c is larger than the inner diameter of the sealing ring 15 and smaller than the outer diameter of the sealing ring 15, and the height of the third support ring wall 212c is adapted to the gap between the bottom end surface of the inner concave area 212 and the sealing ring 15, so as not to affect the sealing connection between the sealing ring 15 and the vacuum cleaner.

[0088] To facilitate the installation and disassembly of the upper cover 2, the front end 21 is also provided with a mounting belt 213. The mounting belt 213 is arranged around the outside of the recessed area 212 and is connected to the recessed area 212. The mounting belt 213 extends from top to bottom to the recessed area 212. The outer edge of the mounting belt 213 is provided with a fourth support ring wall 213a vertically downward.

[0089] In this embodiment, the top end surface of the concave region 212 is a hemispherical surface, with the lowest point and center of the hemisphere located on the centerline of the filter cartridge 1, and a central angle of less than 180°. The mounting band 213 transitions from top to bottom in an arc shape to the concave region 212. The mounting band 213 is a circular arc band with an outer diameter greater than the outer diameter of the sealing ring 15 and an inner diameter equal to the diameter of the third support ring wall 212c. The diameter of the fourth support ring wall 213a is equal to the outer diameter of the mounting band 213.

[0090] The upper cover 2 is detachably connected to the handle 3. Specifically, a clamping plate 214 is positioned within the recessed area 212. The bottom of the clamping plate 214 is connected to the top end surface of the recessed area 212, and the clamping plate 214 is parallel to the centerline of the filter cartridge 1. Lower assembly studs 215 are positioned between the clamping plate 214 and the mounting strap 213. A longitudinal threaded through-hole is defined in the center of the lower assembly stud 215, allowing a screw or stud to be inserted from the bottom of the recessed area 212 into the lower assembly stud 215 for detachable connection to the handle 3. In this embodiment, the clamping plate 214 is located at the rear of the recessed area 212, and two lower assembly studs 215 are positioned between the clamping plate 214 and the mounting strap 213. An upper hook 221 is provided at the tail end of the rear end portion 22. The upper hook 221 includes a vertical plate and a triangular protrusion. The vertical plate is perpendicular to the top end face of the rear end portion 22. The triangular protrusion is located at the upper part of the rear end face of the vertical plate. The triangular protrusion is a right-angled triangular prism. The first right-angled surface is perpendicular to the vertical plate, the second right-angled surface is connected to the rear end face of the vertical plate, the upper end of the inclined surface is connected to the upper end of the vertical plate, and the lower end of the inclined surface is connected to the first right-angled surface.

[0091] The handboard 3 includes a handholding portion 31 , a middle portion 32 and a lap portion 33 in sequence from front to back.

[0092] The handle portion 31 is located above the concave area 212, and a finger cavity for fingers to hold is formed between the handle portion 31 and the concave area 212. It should be noted that in order to facilitate the insertion of fingers into the finger cavity, the handle portion 31 is located at the rear of the front end portion 21, that is, the handle portion 31 is projected onto the front end portion 21, and the coverage ratio of the projection does not exceed 60% and is not less than 30%, so as to ensure the gripping effect of the handle portion 31.

[0093] The bottom end surface of the middle part 32 is provided with a front baffle 34, an upper assembly stud 35 and a lower hook 36. The front baffle 34 is located in front of the card plate 214, and the rear end surface of the front baffle 34 is tightly attached to the front end surface of the card plate 214. The upper assembly stud 35 corresponds to the position of the lower assembly stud 215, and a longitudinal threaded blind hole is provided in the center of the upper assembly stud 35. The threaded blind hole is connected to the threaded through hole of the lower assembly stud 215, and the screw or stud passes through the lower assembly stud 215. The threaded through hole is fixed in the threaded blind hole of the upper assembly stud 35, realizing a detachable connection between the hand plate 3 and the upper cover plate 2; the lower hook 36 can be hooked together with the upper hook 221. Specifically, the lower hook 36 includes a U-shaped enclosure and a lower protrusion. The two ends of the U-shaped enclosure are connected to the rear end surface of the front baffle 34. The lower protrusion is located at the bottom inside the U-shaped enclosure. The lower protrusion cooperates with the triangular protrusion of the upper hook 221, so that the upper hook 221 and the lower hook 36 are hooked together. It should be noted that the number of the upper assembly studs 35 and the lower assembly studs 215 are the same and correspond one to one. In this embodiment, there are two upper assembly studs 35.

[0094] It should be noted that the U-shaped enclosure is arranged outside the rear end portion 22 of the upper cover plate 2, and the two are tightly attached to improve the stability between the upper cover plate 2 and the handboard 3. The lower protrusion of the lower hook 36 can be set only at the position corresponding to the upper hook 221, or it can be set at the bottom of the inner side of the entire U-shaped enclosure. In this embodiment, the cross-section of the lower protrusion is a right triangle, the first right angle is perpendicular to the U-shaped enclosure, the second right angle is located on the U-shaped enclosure, one end of the hypotenuse is connected to the bottom end of the U-shaped enclosure, and the other end of the hypotenuse is connected to the first right angle. The length of the first right angle is equal to the width of the first right angle surface of the triangular protrusion, so that the upper hook 221 and the lower hook 36 are more stably and firmly hooked together.

[0095] To further enhance the stability between the upper cover 2 and the handrail 3, a locking rib 37 and a stabilizing rib 38 are provided on the bottom end surface of the middle portion 32. The locking rib 37 is perpendicularly connected to the front baffle 34. The bottom end surface of the locking rib 37 is provided with a locking notch 371 upwardly extending therefrom. The locking plate 214 can be locked in the locking notch 371. Specifically, the locking notch 371 is an L-shaped notch, with two openings facing the bottom end surface and the front end surface of the locking rib 37, respectively. The locking plate 214 is locked between the front baffle 34 and the locking rib 37. The stabilizing rib 38 is located between the front baffle 34 and the U-shaped enclosure. When the locking rib 37 is thick, the stabilizing rib 38 is located between the locking rib 37 and the U-shaped enclosure. The stabilizing rib 38 is perpendicular to the front baffle 34, and the bottom end surface of the stabilizing rib 38 contacts the top end surface of the rear end portion 22. It should be noted that, in this embodiment, the two upper assembly studs 35 are located on both sides of the engaging rib 37 .

[0096] The overlapping portion 33 is located behind the rear end portion 22 of the upper cover plate 2. Specifically, the portion of the handrail 3 located in front of the front baffle 34 is the handrail portion 31, and the portion of the handrail 3 located behind the U-shaped enclosure plate is the overlapping portion 33.

[0097] In order to improve the comfort of use and the stability of the filter assembly in the vacuum cleaner, the handle plate 3 is an arched plate. Specifically, the handle plate 3 is an arched plate with sunken left and right sides and a raised center. The left and right sides of the handle plate 3 are in contact with the upper cover plate 2, and the downward projection of the handle plate 3 can completely cover the rear end portion 22 of the upper cover plate 2.

[0098] The upper cover plate 2 and the hand-held plate 3 adopt a non-centrally symmetrical structure, which not only facilitates the installation and positioning of the filter assembly, but also prevents the filter assembly from rotating during use, affecting the orientation of the closing portion 12 of the filter cartridge 1, thereby affecting the guiding function of the closing portion 12, and further affecting the heat dissipation effect of the vacuum cleaner.

[0099] It should be noted that when at least one closed portion 12 of the filter cartridge 1 is located directly behind the side wall of the filter cartridge 1, that is, at least one closed portion 12 is oriented in the same direction as the rear end portion 22 of the upper cover plate 2, so that the airflow derived from the filter portion 11 is not directly directed to the suction motor of the motor assembly. In this embodiment, the two closed portions 12 are respectively located directly in front and directly behind the cylinder, and the filter portion 11 is located on the left and right sides of the cylinder, so that the airflow is derived from the left and right sides.

[0100] Assembly method of the filter assembly: embed the bottom end face of the front end portion 21 of the upper cover plate 2 into the groove 132, insert the assembly column 211 into the assembly hole 133, and screw the assembly column 211 into the threaded blind hole from the bottom of the assembly hole 133 through a screw or stud to achieve a detachable connection between the filter cartridge 1 and the upper cover plate 2; cover the hand plate 3 on the upper cover plate 2, hook the upper hook 221 and the lower hook 36 together, insert the clamping plate 214 into the clamping slot 371, and the upper assembly stud 35 and the lower assembly stud 215 are opposite to each other, so that the threaded blind hole of the upper assembly stud 35 and the threaded through hole of the lower assembly stud 215 are connected, and screw the upper assembly stud 35 into the threaded blind hole from the bottom of the threaded through hole of the lower assembly stud 215 through a screw or stud to achieve a detachable connection between the upper cover plate 2 and the hand plate 3.

[0101] Example 3

[0102] This embodiment provides a vacuum cleaner, such as Figure 10-13As shown, in addition to the filter assembly provided in Example 2, it also includes a dust cup body 4, a suction pipe 5, a handle assembly 6, an upper shell 7, a rear shell 8, a power supply assembly 71 and a motor assembly 81. The filter assembly and the power supply assembly 71 are installed in the upper shell 7, the motor assembly 81 is located in the rear shell 8, the suction pipe 5 is connected to the dust cup body 4, the upper shell 7 is located directly above the dust cup body 4, the rear shell 8 is located directly behind the upper shell 7, and the handle assembly 6 is located directly behind the dust cup body 4 and directly below the rear shell 8.

[0103] An assembly cavity 72 for assembling the filter cartridge 1 of the filter assembly is provided in the upper shell 7. The assembly cavity 72 is located in the center of the upper shell 7. A connecting through-hole 721 is provided on the bottom end face of the assembly cavity 72, which can connect the dust cup body 4 and the assembly cavity 72. An assembly through-hole 722 is provided on the top end face of the assembly cavity 72. The filter assembly inserts the filter cartridge 1 into the assembly cavity 72 through the assembly through-hole 722, and the filter cartridge 1 is sealed and connected to the dust cup body 4.

[0104] Specifically, the bottom cover 14 is in sealing contact with the bottom end face of the assembly cavity 72, and the air inlet 101 is sealed and connected with the connecting through hole 721, so that the dust-laden gas entering the dust cup body 4 can enter the filter cartridge 1 for filtering and dust removal, and the filtered dust falls into the dust cup body 4 through the connecting through hole 721; the sealing ring 15 outside the top cover 13 is sealed and connected with the assembly through hole 722, which not only ensures the air tightness between the filter cartridge 1 and the assembly cavity 72, but also the filter cartridge 1 is tightly connected to the assembly cavity 72 only through the sealing ring 15, without adopting other fixed connection methods, so that the filter assembly is easy to take and place.

[0105] It should be noted that a gap is reserved between the side wall of the filter cartridge 1 and the side wall of the assembly cavity 72 for gas circulation. The gap is called an annular fluid channel. The annular fluid channel is arranged around the filter cartridge 1, and the air flow is discharged from the filter part 11 of the filter cartridge 1 into the annular fluid channel. The height of the annular fluid channel is not lower than the height of the cylinder body of the filter cartridge 1, so that the air flow discharged from the filter part 11 can enter the annular fluid channel. The annular fluid channel is surrounded by the outer wall surface of the cylinder body, the side wall surface of the assembly cavity 72, and the upper and lower end surfaces of the assembly cavity 72.

[0106] In this embodiment, the assembly cavity 72 is cylindrical, and its center line coincides with the center line of the filter cartridge 1. The diameter of the assembly cavity 72 is larger than the outer diameter of the cylindrical body of the filter cartridge 1, and the height of the assembly cavity 72 is equal to the height of the filter cartridge 1; the connecting through hole 721 is a circular through hole, and its diameter is equal to the diameter of the air inlet 101; the assembly through hole 722 is a circular through hole, and its diameter is equal to the outer diameter of the sealing ring 15; the centers of the connecting through hole 721 and the assembly through hole 722 are located on the center line of the filter cartridge 1.

[0107] An air outlet 723 connected to the motor assembly 81 of the rear shell 8 is provided on the side wall of the assembly cavity 72. A closed portion 12 of the filter cartridge 1 is arranged opposite to the air outlet 723 to prevent the airflow discharged from the filter cartridge 1 from flowing directly from the air outlet 723 to the motor assembly 81. The air outlet 723 is communicated with the annular fluid channel. The airflow discharged from the filter portion 11 enters the annular fluid channel, and is then guided to the air outlet 723 by the annular fluid channel, and then guided to the motor assembly 81 by the air outlet 723. Finally, the gas is discharged from the exhaust port of the rear shell 8 out of the vacuum cleaner.

[0108] Specifically, the projection of the enclosing portion 12 opposite the air outlet 723 in the direction of the air outlet 723 can completely cover the air outlet 723. In this embodiment, the shape and size of the enclosing portion 12 are adapted to the air outlet 723, that is, the projection of the enclosing portion 12 in the direction of the air outlet 723 just covers the air outlet 723. This can prevent the airflow from being directly directed to the air outlet 723 after being discharged from the filter cartridge 1, while ensuring the air output of the air outlet 723, thereby ensuring the dust removal effect of the vacuum cleaner.

[0109] The power supply component 71 is installed between the side wall of the assembly cavity 72 and the outer wall of the upper shell 7. Specifically, the power supply component 71 is evenly arranged around the annular fluid channel. The airflow flowing in the annular fluid channel can take away the heat generated by the power supply component 71, thereby improving the heat dissipation effect of the vacuum cleaner.

[0110] After the dust-laden gas enters the dust cup body 4 from the suction pipe 5, it enters the filter cartridge 1 from the connecting hole 721 for filtration and dust removal. The dust falls into the dust cup body 4 from the connecting hole 721. The gas enters the annular fluid channel from the filter part 11 under the guidance of the closing part 12 (rather than directly from the air outlet 723 to the motor assembly 81). The gas is then guided by the annular fluid channel to the air outlet 723 and enters the motor assembly 81. Finally, the gas is discharged out of the vacuum cleaner from the exhaust port of the rear shell 8.

[0111] In order to further stabilize the filter assembly, a bottom cover groove 724 for assembling the bottom cover 14 is provided on the bottom end face of the assembly cavity 72. The bottom cover groove 724 is arranged around the connecting through hole 721, and its shape and size are adapted to the bottom cover 14 to better stabilize the filter cartridge 1. An upper cover groove 73 is provided on the top end face of the upper shell 7. The upper cover groove 73 includes a front end groove and a rear end groove. The front end groove is located directly above the assembly cavity 72, and the front end groove is arranged around the assembly through hole 722. The front end groove is adapted to the mounting belt 213 of the upper cover plate 2, that is, the mounting belt 213 can be embedded in the front end groove. At this time, the top end face of the mounting belt 213 is flush with the top end face of the upper shell 7; the rear end groove is located behind the front end groove and is connected to the front end groove. The rear end groove is aligned with the top end face of the upper cover plate 2. The rear end portion 22 and the U-shaped enclosure of the hand plate 3 are adapted to each other, that is, the rear end portion 22 and the U-shaped enclosure can be embedded in the rear end groove; the top end face of the rear shell body 8 is provided with an overlapping groove 82, the overlapping groove 82 is located behind the upper cover groove 73, and the overlapping groove is communicated with the upper cover groove 73, and the overlapping portion 33 of the hand plate 3 can be embedded in the overlapping groove 82. In order to facilitate the removal and placement of the filter assembly, the front part of the overlapping groove 82 is adapted to the overlapping portion 33, and the rear side wall of the overlapping groove 82 has a certain gap with the overlapping portion 33.

[0112] The way to put the filter assembly into the vacuum cleaner is: insert the filter cartridge 1 into the assembly cavity 72, the upper cover plate 2 and the carrying plate 3 correspond to the upper cover groove 73 and the overlapping groove 82, the bottom cover 14 of the filter cartridge 1 is connected to the bottom wall of the assembly cavity 72, and the top cover 13 of the filter cartridge 1 is sealed with the assembly through hole 722 through the sealing ring 15. At the same time, the upper cover plate 2 and the carrying plate 3 are embedded in the upper cover groove 73 and the overlapping groove 82, thereby realizing the installation of the filter assembly into the vacuum cleaner.

[0113] The method of removing the filter assembly from the vacuum cleaner is: put your finger into the finger cavity, apply an upward force to the hand plate 3 (this force can at least overcome the friction between the sealing ring 15 and the assembly through hole 722), pull the filter cartridge 1 out of the assembly cavity 72, and at the same time, the upper cover plate 2 and the hand plate 3 are detached from the upper cover groove 73 and the overlapping groove 82, thereby removing the filter assembly from the vacuum cleaner.

[0114] 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 vacuum cleaner, characterized in that: It comprises a filter assembly, a filter cartridge, a dust collecting cup body (4), a suction pipe (5), a handle assembly (6), an upper shell (7), a rear shell (8), a power supply assembly (71) and a motor assembly (81); The filter assembly and the power supply assembly (71) are installed in the upper housing (7), the motor assembly (81) is installed in the rear housing (8), and the suction pipe (5) is connected to the dust cup body (4); the upper housing (7) is located directly above the dust cup body (4), the rear housing (8) is located directly behind the upper housing (7), and the handle assembly (6) is located directly behind the dust cup body (4) and directly below the rear housing (8); The filter assembly comprises an upper cover plate (2) and a hand plate (3); the upper cover plate (2) is detachably connected to the filter cartridge (1); the hand plate (3) is connected to the upper cover plate (2); the upper cover plate (2) is located above the filter cartridge (1); and the hand plate (3) is located above the upper cover plate (2); the upper cover plate (2) and the hand plate (3) are non-centrally symmetrical structures; At least one filter portion (11) and at least one closed portion (12) are provided on the side wall of the filter cartridge (1), and an air inlet (101) is provided at the bottom of the filter cartridge (1); the ratio of the area of ​​the filter portion (11) to the area of ​​the closed portion (12) is not less than 1:1; dust-laden airflow enters the filter cartridge (1) from the air inlet (101), is filtered and dust-removed by the filter portion (11), and is then discharged from the filter portion (11); An air outlet (723) communicating with the motor assembly (81) of the rear housing (8) is provided on the side wall of the assembly cavity (72); an annular fluid channel for gas circulation is reserved between the side wall of the filter cartridge (1) and the side wall of the assembly cavity (72); the annular fluid channel is arranged around the filter cartridge (1), and the height of the annular fluid channel is not less than the height of the body of the filter cartridge (1); A closed portion (12) of the filter cartridge (1) is arranged opposite to the air outlet (723), and the closed portion (12) is projected in the direction of the air outlet (723) to completely cover the air outlet (723); The power supply assembly (71) is installed between the side wall of the assembly cavity (72) and the side wall of the upper shell (7); the power supply assembly (71) is evenly arranged around the annular fluid channel.

2. The vacuum cleaner according to claim 1, characterized in that The number of the filtering parts (11) is the same as the number of the closing parts (12).

3. The vacuum cleaner according to claim 1, characterized in that The filtering portion (11) and the closing portion (12) are distributed alternately, and the heights of the filtering portion (11) and the closing portion (12) are equal to the height of the side wall of the filter cartridge (1).

4. The vacuum cleaner according to claim 1, characterized in that The filter cartridge (1) comprises a cartridge body, a top cover (13) and a bottom cover (14), wherein the top cover (13) and the bottom cover (14) are respectively arranged on the upper and lower ends of the cartridge body; The air inlet (101) is located on the bottom cover (14); The filtering portion (11) and the sealing portion (12) are arranged to form a cylindrical body.

5. The vacuum cleaner according to claim 4, characterized in that The top end surface of the top cover (13) is provided with a groove (132), and the bottom of the groove (132) is provided with an assembly hole (133).

6. The vacuum cleaner according to claim 5, characterized in that A sealing ring (15) is provided on the outer side of the top cover (13).

7. The vacuum cleaner according to claim 1, wherein The hand plate (3) is an arched plate.

8. The vacuum cleaner according to claim 7, wherein: The upper cover plate (2) comprises a front end portion (21) and a rear end portion (22); A closed portion (12) and a rear end portion (22) of the filter cartridge (1) are oriented in the same direction.

9. The vacuum cleaner according to claim 8, wherein The front end portion (21) is further provided with a mounting belt (213).

10. The vacuum cleaner according to claim 7, wherein The handheld board (3) comprises a handheld portion (31), a middle portion (32) and a lap portion (33) in sequence from front to back.

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