Handheld vacuum cleaner

Abstract

A hand-held dust collector comprises a shell, a filter assembly and a motor assembly; the shell comprises a dusting shell and a main shell, the dusting shell is provided with a dusting pipe, and the front end of the main shell is provided with a dust cup; the dusting shell is located in front of the main shell, the dusting shell is detachably connected with the main shell, and the dusting pipe is in communication with the dust cup; the main shell is provided with a hand-holding part, and the filter assembly and the motor assembly are arranged in the main shell. The dust collector is convenient for users to pour dust. When the user needs to pour out the dust in the dust cup, the user only needs to detach the dusting shell from the main shell, holds the hand-holding part arranged on the main shell and turns over the main shell, so that the dust in the dust cup can be poured out, and the operation is simple and quick.

Description

Technical Field

[0001] This invention relates to vacuum cleaners. Background Technology

[0002] Vacuum cleaners are common household cleaning tools. They work by using an electric motor to drive blades to rotate at high speed, creating negative air pressure within a sealed casing to suck up dust and debris. Vacuum cleaners can be categorized by structure into upright, canister, and handheld types. Handheld vacuum cleaners are widely used due to their small size, light weight, and ease of use and storage.

[0003] Making handheld vacuum cleaners simpler in structure, more versatile in function, and with a better user experience (such as emptying dustbins and disassembling dustbins) is a continuous goal pursued by designers. Currently, handheld vacuum cleaners on the market mainly suffer from the following shortcomings:

[0004] 1. Existing handheld vacuum cleaners require the disassembly of many parts to empty the dust cup, which is inconvenient for users;

[0005] 2. Removing the filter cover from existing handheld vacuum cleaners is quite laborious, and hands will touch the trash, getting dirty and affecting the user experience;

[0006] 3. Existing handheld vacuum cleaners have an unreasonable structural layout that is not ergonomic and affects the user experience due to the large deviation between the handle grip and the overall center of gravity.

[0007] 4. Existing handheld vacuum cleaners have relatively short suction hoses, requiring users to bend over for extended periods when cleaning the floor, which negatively impacts the user experience. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a handheld vacuum cleaner that is easy to empty.

[0009] A further technical problem to be solved by the present invention is to provide a handheld vacuum cleaner that makes it easy to remove the filter cover and does not get hands dirty when removing the filter cover.

[0010] An embodiment of the present invention provides a handheld vacuum cleaner, comprising a housing, a filter assembly, and a motor assembly; the housing includes a suction housing and a main housing, the suction housing being provided with a suction tube, and the front end of the main housing being provided with a dust cup; the suction housing is located in front of the main housing, the suction housing and the main housing are detachably connected, and the suction tube communicates with the dust cup; the main housing is provided with a handheld part, and the filter assembly and the motor assembly are both disposed inside the main housing.

[0011] In the aforementioned handheld vacuum cleaner, the main housing includes a rear housing, the front end of which is detachably connected to the rear end of the dust cup.

[0012] In the aforementioned handheld vacuum cleaner, the filter assembly is disposed in the dust cup, and the filter assembly includes a filter cover and a filter element; the filter cover partially covers the outside of the filter element, the bottom of the filter cover is detachably connected to the filter element, and the peripheral edge of the rear end of the filter element abuts against the inner wall of the central hole of the dust cup.

[0013] In the aforementioned handheld vacuum cleaner, the vacuum housing includes a vacuum housing body and a connecting plate. The connecting plate is located at the rear end of the vacuum housing body and is detachably connected to the vacuum housing body. The connecting plate is provided with an air vent, and the vacuum tube communicates with the dust cup through the air vent.

[0014] In the aforementioned handheld vacuum cleaner, the top of the filter cover is provided with a handle; the top of the filter cover abuts against the connecting plate to form a closed cavity that surrounds the handle.

[0015] The present invention has at least the following advantages:

[0016] 1. The housing of the handheld vacuum cleaner in this embodiment of the invention includes a vacuum housing and a main housing. The vacuum housing and the main housing are detachably connected. The dust cup is located at the front end of the main housing. When the user needs to empty the dust cup, he / she only needs to remove the vacuum housing from the main housing, hold the handle on the main housing and turn the main housing upside down. The operation is simple and quick.

[0017] 2. When removing or assembling the filter cover, after detaching the vacuum cleaner housing from the main housing, the user can easily remove the filter cover by simply pinching the handle, which is simple and quick. Furthermore, because this embodiment creates a sealed, clean space at the handle of the filter cover, debris will not enter this space. Therefore, when removing the filter cover, the hands will not directly come into contact with debris, thus preventing hand contamination. Attached Figure Description

[0018] Figure 1 An isometric schematic diagram of a handheld vacuum cleaner according to an embodiment of the present invention is shown.

[0019] Figure 2 A cross-sectional schematic diagram of a handheld vacuum cleaner according to an embodiment of the present invention is shown.

[0020] Figure 3 A schematic diagram showing the vacuum cleaner housing and the main housing in a separated state according to an embodiment of the present invention is shown.

[0021] Figure 4 A schematic diagram is shown of the main housing emptying dust from the dust cup according to an embodiment of the present invention.

[0022] Figure 5 A partial explosion diagram of a handheld vacuum cleaner according to an embodiment of the present invention is shown.

[0023] Figure 6A partial schematic diagram of a vacuum cleaner housing, a filter assembly, and a dust cup according to an embodiment of the present invention is shown.

[0024] Figure 7 A schematic diagram is shown of the vacuum tube in an extended state according to an embodiment of the present invention. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0026] Please refer to Figures 1 to 4 The handheld vacuum cleaner of this embodiment includes a housing 1, a filter assembly 2, a motor assembly 3, a battery pack 4, and a control circuit board assembly 5.

[0027] The housing 1 includes a suction housing 1a and a main housing 1b. The suction housing 1a is located in front of the main housing 1b and is detachably connected to the main housing 1b. The detachable connection can be made by means including, but not limited to, rotational snap-fit, or interlocking with a hook and slot. The filter assembly 2 and the motor assembly 3 are both housed within the main housing 1b.

[0028] The main housing 1b includes a dust cup 11b, a rear housing 12b, and a handle 13b. The dust cup 11b is located at the front end of the main housing 1b, and its rear end is detachably connected to the front end of the rear housing 12b. In this embodiment, the suction housing 1a is rotatably engaged with the front end of the dust cup 11b. For this purpose, the suction housing 1a is provided with multiple rotating slots 10a, and the dust cup 11b is provided with multiple rotating latches 10b that respectively engage with the multiple rotating slots 10a. The rear end of the dust cup 11b is connected to the front end of the rear housing 12b via a stop 19. In other embodiments, the rear end of the dust cup 11b is detachably connected to the front end of the rear housing 12b by a rotatable engagement.

[0029] In this embodiment, the handheld part 13b is a handle, and the two ends of the handle 13b are connected to the dust cup 11b and the rear housing 12b, respectively; the handle 13b is located directly above the motor assembly 3. This layout ensures that the grip position of the handle is basically located at the center of gravity of the whole machine, making it convenient for users to hold the vacuum cleaner for vacuuming operations and providing users with a better operating experience.

[0030] The vacuum cleaner housing 1a is equipped with a suction pipe 11, which is connected to a dust cup 11b. Dust sucked in through the suction pipe 11 is collected in the dust cup 11b. When it is necessary to empty the dust cup 11b, the user can simply rotate the vacuum cleaner housing 1a to remove it from the main housing 1b. Figure 3 As shown, by holding the holding part 13b and turning the main housing 1b upside down, the dust in the dust cup 11b can be emptied. The operation is simple and quick.

[0031] Please combine Figure 7The content is as follows. In this embodiment, the vacuum tube 11 includes an outer vacuum tube 111 and an inner vacuum tube 112. At least a portion of the inner vacuum tube 112 is disposed inside the outer vacuum tube 111. The inner vacuum tube 112 can move axially relative to the outer vacuum tube 111 between an extended position and a retracted position. In a specific embodiment, multiple axially extending strip grooves are provided on the inner wall of the outer vacuum tube 111, and multiple protrusions (the strip grooves and protrusions are not shown in the figure) are provided on the outer wall of the inner vacuum tube 112, which respectively cooperate with the multiple strip grooves. The multiple protrusions are respectively embedded in the multiple strip grooves and can move along the strip grooves. The user can adjust the length of the inner vacuum tube 112 extending out of the outer vacuum tube 111 according to actual needs. By designing the vacuum tube 11 as a telescopic sleeve structure, the usable length of the vacuum tube can be increased, reducing the number of times the user has to bend over, and providing the user with a better operating experience.

[0032] The battery pack 4 is detachably installed at the rear end of the main housing 1b (i.e., the rear end of the rear housing 12b). As an external battery pack, the battery pack 4 has a larger capacity than the internal battery pack, providing stronger single-pack battery life and extending the continuous working time of the entire device. It also allows users to easily select battery packs of different capacities according to their actual needs. In this embodiment, the battery pack 4 is detachably installed at the rear end of the main housing 1b. The battery pack 4 has a power display function, allowing users to monitor the battery pack's power status at any time. When the battery pack's power is low, the battery pack 4 can be removed and charged with a charger.

[0033] The control circuit board assembly 5 is disposed in the inner cavity of the handheld part 13b, and the handheld part 13b is provided with a start / stop switch 51 and a speed control switch 52.

[0034] Please combine Figure 5 and Figure 6 The filter assembly 2 is disposed in the dust cup 11b. The filter assembly 2 includes a filter cover 2a and a filter element 2b. The filter cover 2a partially covers the filter element 2b, and the bottom of the filter cover 2a is detachably connected to the filter element 2b. The peripheral edge of the rear end of the filter element 2b abuts against the inner wall of the central hole 110 of the dust cup 11b.

[0035] In this embodiment, the filter element 2b is snap-fitted to the bottom of the filter cover 2a. Specifically, the bottom of the filter element 2b is provided with multiple first elastic hooks 21, and the filter cover 2a is provided with multiple first latches 22 that respectively cooperate with the multiple first elastic hooks 21. The multiple first elastic hooks 21 are respectively hooked into the multiple first latches 22. Preferably, the filter element 2b has a waterproof function to prevent moisture from entering the motor 3a (mentioned below) installed in the filter element 2b and to prevent damage to the motor. The filter element 2b can be, for example, a HEPA filter element.

[0036] In this embodiment, the inner wall of the central hole 110 of the dust cup 11b is provided with an annular step 114 facing the dust collection housing 1a, and the rear end of the filter element 2b is provided with an annular flange 24, which presses on the annular step 114.

[0037] The motor assembly 3 includes a motor 3a, a motor mount 3b, and a fan blade 3c. The motor 3a is housed within the filter element 2b and is detachably connected to the motor mount 3b. The motor mount 3b is detachably connected to the rear end of the dust cup 11b. The fan blade 3c is connected to the output shaft 30a of the motor 3a.

[0038] In this embodiment, the motor base 3b includes a positioning inner ring 31, an annular outer cover 32, and multiple connecting ribs 33 spaced circumferentially. The motor 3a is detachably connected to the positioning inner ring 31 by screws. The output shaft 30a of the motor 3a passes through the central hole 310 of the positioning inner ring 31. The periphery of the positioning inner ring 31 is connected to one end of the multiple connecting ribs 33, and the other end of the multiple connecting ribs 33 is connected to the periphery of the central through hole 320 of the annular outer cover 32. The gap between each pair of adjacent connecting ribs 33 forms an air duct. The periphery of the annular outer cover 32 is detachably connected to the bottom end of the dust cup 11b, and the annular outer cover 32 covers the fan blade 3c. Specifically, the bottom of the dust cup 11b is provided with multiple second elastic hooks 116, and the periphery of the annular outer cover 32 is provided with the same number of lugs 324 as the second elastic hooks 116 of the dust cup 11b. The lugs 324 are provided with second latches 326 that cooperate with the second elastic hooks 116. Multiple second elastic hooks 116 are respectively hooked to multiple second bayonets 326.

[0039] In this embodiment, a cylindrical part 113 is also provided inside the dust cup 11b, and the motor 3a is disposed in the inner cavity of the cylindrical part 113. The outer wall of the cylindrical part 113 is hollowed out to guide the flow direction of the air.

[0040] In this embodiment, a portion of the annular outer cover 32 is located inside the rear housing 12b. The rear housing 12b has a vent 117 on its side and a filter sponge 118 inside to prevent fine dust from flowing back into the air, reducing secondary air pollution. The filter sponge 118 also has a sound insulation function, which can reduce the impact of noise on the user.

[0041] In this embodiment, the vacuum housing 1a includes a vacuum housing body 11a and a connecting plate 12a. The connecting plate 12a is located at the rear end of the vacuum housing body 11a and is detachably connected to the vacuum housing body 11a by multiple screws 91. The connecting plate 12a is provided with a vent 120, through which the vacuum pipe 11 communicates with the dust cup 11b. Further, a dust baffle 13a is provided at the vent, which is movably connected to the connecting plate 12a. When the motor assembly 3 is not working, the dust baffle 13a blocks the vent 120. When the motor assembly 3 is working, a negative pressure is formed in the dust cup 11b, and the dust baffle 13a opens the vent 120 under the action of the negative pressure. Specifically, a rearward protrusion 121a is provided above the vent 120. The protrusion 121a has a through hole in the height direction. The dust baffle 13a has a plug part 131a that mates with the plug hole. The plug part 131a is inserted into the plug hole, thereby movably connecting with the connecting plate 12a.

[0042] The top of the filter cover 2a is provided with a handle 23; the top of the filter cover 2a abuts against the connecting plate 12a, forming a closed cavity that surrounds the handle 23. In this embodiment, the rear end face of the connecting plate 12a is provided with an annular protrusion 125 protruding to one side of the filter cover 2a; the top of the filter cover 2a is provided with a flat portion 25, and the handle 23 protrudes from the flat portion 25; the top end of the annular protrusion 125 abuts against the flat portion 25, forming a closed cavity 30, in which the handle 23 is located. By pressing the flat portion 25 of the filter cover 2a with the annular protrusion 125, it can also serve as an axial positioning tool. Optionally, the handle 23 is flat and rectangular.

[0043] When assembling or disassembling the filter cover 2a, after removing the vacuum cleaner housing 1a from the main housing 1b, the user can easily remove the filter cover 2a by simply pinching the handle 23, which is simple and quick. Furthermore, because this embodiment creates a sealed, clean space at the handle of the filter cover 2a, debris will not enter this space. Therefore, when removing the filter cover 2a, hands will not directly contact debris, preventing hand contamination. The removed filter cover 2a can be rinsed with water or cleaned with a brush.

[0044] In this embodiment, the handheld vacuum cleaner is powered by the battery pack 4 during operation. The control circuit board assembly 5 controls the motor 3a to rotate the fan blades 3c, creating a negative pressure in the dust cup 11b. Debris is drawn into the suction pipe 11, and air pressure opens the dust baffle 13a, allowing the debris to be sucked into the dust cup 11b. After entering the dust cup, the debris is filtered through the filter cover 2a and filter element 2b, separating it into the dust cup 11b. Clean air is drawn into the fan blades 3c and discharged through the air vent 117, thereby reducing the impact of impurities in the airflow on the fan blades and motor, extending the machine's lifespan. When the machine stops, the dust baffle 13a returns to its original position under gravity, sealing the vent 120 and preventing debris from leaking out of the dust cup 11b.

[0045] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A handheld vacuum cleaner, comprising a housing, a filter assembly, and a motor assembly; characterized in that, The housing includes a suction housing and a main housing. The suction housing is equipped with a suction pipe, and the front end of the main housing is equipped with a dust cup with an open front end. The vacuum cleaner housing is located in front of the main housing, and is detachably connected to the dust cup at the front end of the main housing, with the vacuum tube communicating with the dust cup. The vacuum cleaner housing includes a vacuum cleaner housing body and a connecting plate, with the connecting plate located at the rear end of the vacuum cleaner housing body and detachably connected to it. The connecting plate has a vent, through which the vacuum tube communicates with the dust cup. The main housing is provided with a handheld part, and the filter assembly and the motor assembly are both disposed inside the main housing. The filter assembly is disposed in the dust cup. The dust collection housing can be removed from the main housing, and the dust in the dust cup can be emptied by inverting the main housing. The filter assembly includes a filter cover and a filter element; the filter cover partially covers the filter element, the bottom of the filter cover is detachably connected to the filter element, and the peripheral edge of the rear end of the filter element abuts against the inner wall of the central hole of the dust cup. The motor assembly includes a motor, a motor base, and a fan blade; the motor is disposed inside the filter element and is detachably connected to the motor base; the motor base is detachably connected to the rear end of the dust cup; and the fan blade is connected to the output shaft of the motor.

2. The handheld vacuum cleaner as described in claim 1, characterized in that, The handheld vacuum cleaner includes a battery pack that is detachably mounted to the rear end of the main housing.

3. The handheld vacuum cleaner as described in claim 1, characterized in that, The main housing includes a rear housing, the front end of which is detachably connected to the rear end of the dust cup.

4. The handheld vacuum cleaner as described in claim 1, characterized in that, The inner wall of the central hole of the dust cup is provided with an annular step, and the rear end of the filter element is provided with an annular flange, which presses against the annular step.

5. The handheld vacuum cleaner as described in claim 1, characterized in that, The motor base includes a positioning inner ring, an annular outer cover, and multiple connecting ribs spaced apart along the circumference. The motor is detachably connected to the positioning inner ring by screws. The output shaft of the motor passes through the central hole of the positioning inner ring. The periphery of the positioning inner ring is connected to one end of the plurality of connecting ribs. The other ends of the plurality of connecting ribs are respectively connected to the periphery of the central through hole of the annular outer cover. The periphery of the annular outer cover is detachably connected to the bottom end of the dust cup, and the annular outer cover houses the fan blades.

6. The handheld vacuum cleaner as described in claim 1, characterized in that, The filter cover is provided with a handle at the top; The top of the filter cover abuts against the connecting plate to form a closed cavity that surrounds the handle.

7. The handheld vacuum cleaner as described in claim 6, characterized in that, The rear end face of the connecting disc is provided with an annular protrusion that protrudes toward one side of the filter cover; The top of the filter cover has a flat portion, and the handle protrudes from the flat portion; the top of the annular protrusion abuts against the flat portion to form a closed cavity, and the handle is located in the closed cavity.

8. The handheld vacuum cleaner as described in claim 6, characterized in that, A dust baffle is provided at the vent, and the dust baffle is movably connected to the connecting plate. When the motor assembly is not working, the dust baffle blocks the vent, and when the motor assembly is working, the dust baffle opens the vent.

9. The handheld vacuum cleaner as described in claim 3, characterized in that, The handheld part is a handle, and the two ends of the handle are respectively connected to the dust cup and the rear housing; The handle is located directly above the motor assembly.

10. The handheld vacuum cleaner as described in claim 1, characterized in that, The suction tube includes an outer suction tube and an inner suction tube, at least a portion of which is disposed inside the outer suction tube. The inner suction tube is axially movable relative to the outer suction tube between an extended position and a retracted position.

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