Handheld dust collector

Abstract

The utility model discloses a handheld dust collector, which belongs to the technical field of cleaning equipment and comprises a main machine, a dust cup detachably attached to the main machine, a filter component detachably mounted in the dust cup and a dirt inlet channel used for guiding external air and / or dirt to flow into the dust cup. The filtering assembly comprises a support matched with the dust cup and a filtering unit arranged on the support, a buckling and grabbing part protruding back to the filtering unit is arranged on the edge of the support, and the buckling and grabbing part is used for being buckled and grabbed to relieve sealing fit between the support and the dust cup. Through the structural improvement, the difficulty of disassembling and assembling the filtering assembly by a user is reduced, the situation that the dust cup slips out of the hand to cause smudginess in the dust cup to be spilled due to the fact that the user drastically pulls out the filtering assembly from the dust cup is avoided, and the use experience of the user is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cleaning equipment technical field especially relates to a hand -held dust collector. BACKGROUND

[0002] With the development of science and technology and the improvement of living standards, various electric appliances have entered people's life and production and brought great convenience, and the dust collector as a common electric appliance is mainly used for collecting dust, chippings and other dirt. The existing hand -held dust collector generally includes a host computer and a dust cup, the host computer is provided with an airflow generating assembly composed of a motor and an impeller, the dust cup is provided with a filter assembly for separating dirt and airflow, the airflow generating assembly works to suck the air in the dust cup to produce negative pressure in the dust cup, the external air flows into the dust cup to form an airflow under the action of air pressure difference, the dirt flows into the dust cup with the airflow, and the filter assembly separates the dirt and the airflow, and the separated airflow is discharged from the host computer after flowing through the airflow generating assembly.

[0003] In order to avoid air leakage, the filter assembly and the dust cup are generally tightly matched through a sealing ring. A handle is generally arranged on the filter assembly for the user to hold and pull out the filter assembly from the dust cup. Since the handle on the filter assembly is generally arranged in the middle, the filter assembly is uniformly stressed in the circumferential direction when the user applies force through the handle. Since the filter assembly and the dust cup are tightly matched under the action of the sealing ring, especially for the dust collector used in dry and wet conditions, the sealing fit between the filter assembly and the dust cup is tighter, and the filter assembly uniformly stressed in the circumferential direction will not easily separate from the dust cup. In order to successfully disassemble the filter assembly, the user needs to apply a large force to the filter assembly through the handle, and the large force is easy to make the dust cup fall off when the filter assembly is pulled out, and the falling dust cup will pour out the dirt collected therein, which is not conducive to improving the user's experience. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above-mentioned shortcomings and deficiencies in the prior art, the utility model provides a hand -held dust collector, which reduces the difficulty of the user to disassemble the filter assembly through structural improvement, avoids the situation that the dirt in the dust cup is poured out due to the user pulling out the filter assembly from the dust cup with great force, and is conducive to improving the user's experience.

[0005] In order to achieve the above technical purpose, the utility model provides a hand -held dust collector, which includes:

[0006] The host computer includes a shell and an airflow generating assembly arranged in the shell;

[0007] The dust cup is detachably attached to the host computer;

[0008] The filter assembly is detachably installed in the dust cup;

[0009] A dirt inlet channel for guiding external air and / or dirt into the dust cup;

[0010] The filter assembly comprises a bracket matched with the dust cup and a filter unit arranged on the bracket, and a buckling part protruding away from the filter unit is arranged at the edge of the bracket, and the buckling part is buckled to release the sealing match between the bracket and the dust cup.

[0011] Preferably, a hand buckle hole is arranged on the buckling part.

[0012] Preferably, a plurality of hand buckle holes are arranged at the bracket in a circumferential direction, and a separation rib is arranged between two adjacent hand buckle holes.

[0013] Preferably, the height of the hand buckle hole is H, and 7mm≤H≤20mm; and / or, the length of the hand buckle hole is L, and 15mm≤L≤40mm.

[0014] Preferably, the filter unit is arranged in an axial direction along a front-rear direction, and the buckling part is arranged at the top side of the bracket; and / or, the filter assembly installed in the dust cup is in contact with the inner wall of the dust cup through the buckling part.

[0015] Preferably, a first sealing ring is arranged on the bracket, and the filter assembly installed in the dust cup is in circumferential sealing match with the dust cup through the first sealing ring; and / or, the filter unit is detachably installed on the bracket, and the filter unit and the bracket are in circumferential sealing match through a second sealing ring.

[0016] Preferably, the bracket comprises a cover part formed with a receiving cavity and a support part arranged at one end of the cover part, the support part is matched with the dust cup to support the filter assembly in the dust cup, the filter unit is detachably installed in the receiving cavity, a filter screen is arranged on the side wall of the cover part, and the buckling part protrudes away from the filter unit from the edge of the support part.

[0017] Preferably, a water-proof cover is arranged on the outer side of the cover part to cover at least part of the filter screen.

[0018] Preferably, the bracket is in a flat ring shape, and the filter unit is detachably attached to one side of the bracket.

[0019] Preferably, the filter unit comprises a Hepa, a first end cover and a second end cover, the Hepa is reciprocally crimped and surrounds a hollow cylinder, the first end cover and the second end cover are arranged at two ends of the Hepa respectively, the second end cover is provided with an opening corresponding to the cylindrical Hepa, and a detachable clamping structure is arranged between the second end cover and the bracket.

[0020] After the above technical scheme is adopted, the present application has the following advantages:

[0021] 1. The hand-held dust collector, the filter assembly comprises a support and a filter unit, the filter unit is arranged on the support, the support and the dust cup cooperate to erect the filter assembly in the dust cup. The edge of the support is provided with a buckle part protruding away from the filter unit, when the user applies force to the support through the buckle part, because the buckle part is arranged away from the center of the support, the local part of the support close to the buckle part is first separated from the dust cup in the circumferential direction, that is, the circumferential sealing cooperation between the support and the dust cup is first released by using the local part of the support to separate, then the whole filter assembly can be taken out from the dust cup through the buckle part, the user can take out the filter assembly through the buckle part by applying a small force, especially for the dry and wet dual-purpose hand-held dust collector with tight cooperation between the support and the dust cup, the operation difficulty of the user when taking out the filter assembly from the dust cup can be greatly reduced. The distribution position of the buckle part relative to the support is reasonably set, the difficulty of the user in disassembling the filter assembly is reduced, the situation that the dust cup is pulled out by the user with great force to make the dust cup drop and cause the dirt in the dust cup to be spilled is avoided, which is helpful to improve the user experience. In addition, because the buckle part is arranged at the edge of the support, interference caused by the buckle part to the cooperation between the dust cup and the main machine can be avoided, so that the dust cup can be smoothly attached to the main machine.

[0022] 2. Preferably, a buckle hole is arranged on the buckle part, when the user takes out the filter assembly, the user can insert the fingers into the buckle hole and apply force to the buckle part, so that the effectiveness of the user applying force to the support through the buckle part can be improved, which is helpful to further reduce the operation difficulty of the user when taking out the filter assembly from the dust cup.

[0023] 3. A plurality of buckle holes are arranged on the support in the circumferential direction, when the user takes out the filter assembly, the user can insert the index finger and the middle finger into the buckle hole and apply force to the buckle part, so that the effectiveness of the user applying force to the support through the buckle part when taking out the filter assembly from the dust cup can be further improved, which is helpful to further improve the user experience. A separation rib is arranged between the two adjacent buckle holes, on the one hand, the separation rib separates the buckle holes, on the other hand, the separation rib ensures the structural strength of the buckle part.

[0024] 4. The height H and the length L of the buckle hole are reasonably set, so that the fingers of the user can be effectively inserted. If the height H of the buckle hole is less than 7mm or the length L is less than 15mm, the fingers of the user cannot be effectively inserted into the buckle hole, so that the force cannot be effectively applied to the support through the buckle part. If the height H of the buckle hole is greater than 20mm or the length L is greater than 40mm, the size of the buckle hole is large, accordingly, the size of the buckle part is obviously increased, which is not conducive to keeping the support and the dust cup in cooperation.

[0025] 5. When the filter unit is arranged axially in the front-to-back direction, the dust cup is also arranged axially in the front-to-back direction. In this case, the clamping part is preferably located on the top side of the bracket. When the user takes the filter component out of the dust cup, the user can tilt the dust cup so that the clamping part faces upward and the front end of the dust cup faces downward. This can prevent the dirt in the dust cup from easily spilling out of the dust cup because the cup mouth is facing downward, which is conducive to improving the user experience.

[0026] When the filter assembly is installed inside the dust cup, the latching part contacts the inner wall of the dust cup, which effectively increases the contact area between the bracket and the dust cup, helps to improve the limiting effect on the bracket, and thus helps to improve the stability of the filter assembly when installed inside the dust cup.

[0027] 6. When the handheld vacuum cleaner is a wet / dry vacuum cleaner, the bracket includes a housing and a support. The filter unit is detachably installed in the receiving cavity of the housing. The support works with the dust cup to mount the filter assembly inside the dust cup. A filter screen is installed on the side wall of the housing. The housing of the bracket separates the dirt sucked into the dust cup from the filter unit, preventing the dirt sucked into the dust cup from splashing towards the filter assembly and causing the filter unit to fail due to water. It also prevents the dirt in the dust cup from surging and contacting the filter unit when the user moves the vacuum cleaner, thus ensuring the filtration performance of the filter unit.

[0028] 7. A water-blocking cover is installed on the outside of the housing to cover the filter screen. When the user turns the dust cup upward, the water-blocking cover blocks the dirt liquid flowing towards the filter screen from the dust cup, thereby preventing the dirt liquid from flowing from the filter screen into the filter assembly and then towards the airflow generating assembly, ensuring the stable working performance of the airflow generating assembly. Attached Figure Description

[0029] Figure 1 This is a complete drawing of the handheld vacuum cleaner in Example 1;

[0030] Figure 2 This is a partial structural diagram of the handheld vacuum cleaner in Embodiment 1;

[0031] Figure 3 This is an exploded view of the handheld vacuum cleaner in Example 1;

[0032] Figure 4 This is an axial sectional view of a portion of the structure of the handheld vacuum cleaner in Embodiment 1;

[0033] Figure 5 This is a partial axial sectional view of the filter assembly, airflow generating assembly, and main unit of the handheld vacuum cleaner in Embodiment 1.

[0034] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0035] Figure 7 Structure diagram of air flow generating assembly in Example 1;

[0036] Figure 8 Structure diagram of cup body in Example 1;

[0037] Figure 9 Exploded diagram of filter assembly in Example 1;

[0038] Figure 10 Structure diagram of support in Example 1;

[0039] Figure 11 Exploded diagram of filter unit in Example 1;

[0040] Figure 12 Exploded diagram of support and water baffle in Example 1;

[0041] Figure 13 Structure diagram of handheld vacuum cleaner in Example 1 when dust cup faces upward;

[0042] Figure 14 Exploded diagram of filter assembly in Example 2.

[0043] In the drawings, 10 - handheld vacuum cleaner,

[0044] 100 - main machine, 110 - machine shell, 111 - front shell body, 1101 - rear protruding ring, 1102 - front protruding ring, 1103 - lower buckle, 112 - rear shell body, 113 - recess, 114 - clamping protruding edge, 115 - handle, 116 - receiving part, 117 - air inlet hole, 118 - air outlet hole, 119 - ventilation hole, 101 - air inlet cavity, 102 - air outlet cavity, 120 - air flow generating assembly, 121 - motor, 122 - impeller, 123 - air baffle, 124 - air suction port, 125 - air exhaust port, 130 - soft rubber ring, 140 - lock catch, 150 - spring, 160 - switch, 170 - push block,

[0045] 200 - dust cup, 210 - cup body, 211 - plug pipe, 212 - upper buckle, 213 - buckle slot, 214 - step surface, 215 - limiting slot, 220 - dirty inlet pipe, 230 - valve piece, 300 - filter assembly, 310 - support, 311 - cover part, 3111 - slot, 3112 - guide cavity, 312 - support part, 3121 - ring edge, 3122 - convex rib, 313 - containing cavity, 314 - buckling part, 315 - buckling hole, 316 - separation rib, 317 - limiting block, 318 - positioning surface, 319 - clamping slot, 320 - filter unit, 321 - first end cover, 322 - second end cover, 323 - hepa, 324 - through hole, 325 - clamping block, 326 - holding rib, 330 - filter screen, 340 - first sealing ring, 350 - second sealing ring, 360 - third sealing ring, 370 - water baffle, 380 - ventilation opening,

[0046] 400 - dirty inlet channel,

[0047] 500 - battery pack. DETAILED DESCRIPTION

[0048] The utility model will be further described below in combination with the drawings and specific embodiments. It should be understood that the following "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "vertical", "horizontal", "top", "bottom" and other words indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device / element must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the utility model.

[0049] Embodiment one

[0050] In combination Figures 1 to 13 , the hand-held dust collector 10 provided by the utility model embodiment one comprises:

[0051] The host computer 100 comprises a shell 110 and an air flow generating assembly 120 arranged in the shell 110;

[0052] The dust cup 200 is detachably attached to the host computer 100;

[0053] The filter assembly 300 is detachably mounted in the dust cup 200;

[0054] The dirty inlet channel 400 is used for guiding external air and / or dirt to flow into the dust cup 200;

[0055] The filter assembly 300 comprises a bracket 310 matched with the dust cup 200 and a filter unit 320 arranged on the bracket 310, and the bracket 310 is provided with a buckling part 314 protruding away from the filter unit 320 at the edge of the bracket 310, which is buckled to release the sealing match between the bracket 310 and the dust cup 200.

[0056] The buckling part 314 protruding away from the filter assembly 300 is arranged at the edge of the bracket 310, and when the user applies force to the bracket 310 through the buckling part 314, the local part of the bracket 310 close to the buckling part 314 is first separated from the dust cup 200 in the circumferential direction due to the buckling part 314 deviating from the center of the bracket 310, that is, the circumferential sealing match between the bracket 310 and the dust cup 200 is first released by the local part of the bracket 310, and then the entire filter assembly 300 is taken out of the dust cup 200 through the buckling part 314, so that the user can take out the filter assembly 300 from the dust cup 200 by applying a small force through the buckling part 314, especially for the dry-wet dual-purpose handheld vacuum cleaner with a tight match between the bracket 310 and the dust cup 200, which can greatly reduce the operation difficulty of the user when taking out the filter assembly 300 from the dust cup 200. Reasonably arranging the distribution position of the buckling part 314 relative to the bracket 310 can reduce the difficulty of the user in disassembling the filter assembly 300, avoid the situation that the dust cup 200 is dropped due to the user pulling out the filter assembly 300 from the dust cup 200 with great force, and prevent the dirt in the dust cup 200 from spilling out, which is beneficial to improve the user experience.

[0057] In combination Figure 3 In the embodiment, the shell 110 comprises a front shell body 111 and a rear shell body 112 distributed in front and back, wherein the front shell body 111 preferably adopts a shell structure matched in front and back, and the rear shell body 112 preferably adopts a shell structure opened in left and right. The rear end of the front shell body 111 is provided with a non-circular groove 113, and the front end of the rear shell body 112 is provided with a clamping convex edge 114 matched with the groove 113, and when the left and right two parts of the rear shell body 112 are fixed together, the clamping convex edge 114 is embedded in the groove 113, so as to realize the connection of the front shell body 111 and the rear shell body 112, and the groove 113 and the clamping convex edge 114 are consistent in shape and can be set as an elliptical shape, a D shape, a rounded rectangular shape and the like. The top side of the rear shell body 112 is formed with a handle 115 extending in the front and back direction, and the user can hold the vacuum cleaner by the handle 115 during use. In combination Figure 1 , Figure 2The hand-held vacuum cleaner 10 of the embodiment is preferably of a cordless structure, i.e. the hand-held vacuum cleaner 10 of the embodiment is preferably powered by a detachable battery pack 500. Based on this, the bottom side of the rear housing 112 is formed with a receiving portion 116 for receiving the battery pack 500, and the battery pack 500 mounted on the main body 100 via cooperation with the receiving portion 116 supplies power to the power-consuming elements such as the airflow generating assembly 120. The receiving portion 116 is preferably of a housing structure with the rear side and the bottom side both open, and the battery pack 500 can be inserted into the receiving portion 116 from the rear to the front to be mounted on the main body 100. The battery pack 500 mounted on the main body 100 is covered by the receiving portion 116 from the top half or entirely, and water dripping on the main body 100 can drip downward along the receiving portion 116, thereby avoiding water dripping on the battery pack 500 and ensuring the electrical performance of the battery pack 500. Of course, the receiving portion 116 can also be provided in other reasonable styles, as long as the installation requirement of the battery pack 500 is met. As an alternative to the embodiment, the casing 110 as a whole can also be of other reasonable structures such as a left-right split housing structure, and the present application does not make mandatory limitation to the specific structure of the casing 110. As an alternative to the embodiment, the hand-held vacuum cleaner 10 in use can also be connected to the mains via a power cord.

[0058] In combination Figure 5 , Figure 7In the embodiment, the axial direction of the air flow generating assembly 120 is arranged along the front-rear direction, the air flow generating assembly 120 comprises a motor 121, an impeller 122 and a wind guide cover 123, the motor 121 is positioned in the casing 110, the impeller 122 is arranged on the front side of the motor 121 and is sleeved on the rotating shaft of the motor 121, the wind guide cover 123 is positioned in the casing 110 and is located on the front side of the motor 121, the impeller 122 is located in the wind guide cover 123, the front wall of the wind guide cover 123 is provided with an air inlet 124, and the side wall of the wind guide cover 123 is provided with a plurality of air outlets 125 which are distributed in the circumferential direction. The front wall of the front shell 111 is provided with air inlet holes 117 which are distributed in the form of grating holes, the side wall of the front shell 111 is provided with air outlet holes 118 which are distributed in the form of grating holes, in addition, the front wall of the front shell 111 is provided with a rear convex ring 1101 which extends rearward around the air inlet hole 117, the rear end of the rear convex ring 1101 abuts against the wind guide cover 123 and is located at the outer periphery of the air inlet 124. In order to avoid air leakage, the rear convex ring 1101 and the wind guide cover 123 are clamped with a soft rubber ring 130. The inner cavity of the casing 110 is separated into an air inlet cavity 101 and an air outlet cavity 102 which are not directly communicated by using the rear convex ring 1101 and the soft rubber ring 130, the air inlet hole 117 on the front shell 111 and the air inlet 124 on the wind guide cover 123 are communicated through the air inlet cavity 101, and the air outlet 125 on the wind guide cover 123 and the air outlet hole 118 on the front shell 111 are communicated through the air outlet cavity 102. In addition, the front wall of the front shell 111 is further provided with a front convex ring 1102 which protrudes forward around the air vent hole 119. In order to facilitate heat dissipation of the motor 121, the air vent hole 119 in the form of grating hole can be arranged on the side wall of the rear shell 112. In order to avoid that external objects are sucked into the main machine 100, the sponge which covers the air inlet hole 117 can be arranged on the front side of the front shell 111. In order to avoid that external objects enter the main machine 100, the sponges which cover the air outlet hole 118 and the air vent hole 119 respectively can be arranged on the inner side of the casing 110. The air flow generating assembly 120 of the embodiment can also be arranged in other reasonable structures, for example, the impeller 122 is built in the motor 121 and the arrangement of the wind guide cover 123 is cancelled, the air flow generating assembly 120 meets the requirement that air in the dust cup 200 is sucked to make the dust cup 200 in a negative pressure state during work, and the specific structure of the air flow generating assembly 120 is not limited by the utility model.

[0059] In combination Figure 4In the embodiment, the dust cup 200 is arranged in the axial direction along the front-rear direction, and the dust cup 200 comprises a cup body 210 and a dirt inlet pipe 220. The cup body 210 is provided with a plug pipe 211 extending in the axial direction along the front-rear direction at the front end thereof. The rear end of the dirt inlet pipe 220 is detachably or fixedly inserted into the plug pipe 211. The inner cavity of the dirt inlet pipe 220 and the inner cavity of the plug pipe 211 are combined to form a dirt inlet channel 400, which is in communication with the dust cup 200 at the rear end, and the rear end of the cup body 210 is open. In order to avoid the dirt in the dust cup 200 from falling out through the dirt inlet channel 400 when the cleaner is in a non-working state, the rear end of the plug pipe 211 is provided with a valve piece 230 for opening and closing the dirt inlet channel 400. Preferably, the top side of the valve piece 230 is positioned and connected to the rear end of the plug pipe 211, and the valve piece 230 is turned upward to open the dirt inlet channel 400 under the action of negative pressure suction. The dust cup 200 of the embodiment can also be provided in other reasonable structures, such as the dirt inlet pipe 220 being integrally formed with the dust cup 200, or the plug pipe 211 being formed by extending the main machine 100 partially forward, and the like. The specific structure of the dust cup 200 is not limited by the utility model.

[0060] In the embodiment, the top side of the rear end of the cup body 210 is provided with an upwardly protruding upper buckle 212. Correspondingly, the top side of the front end of the main machine 100 is provided with a lock buckle 140 and a spring 150. The lock buckle 140 is pivotally arranged, one end of the spring 150 is positioned and arranged, and the other end of the spring 150 abuts against the rear end of the lock buckle 140. The spring 150 is in a compressed state and biases the lock buckle 140 towards the direction of being buckled with the upper buckle 212. In addition, the bottom side of the rear end of the cup body 210 is provided with a clamping groove 213, and the bottom side of the front end of the main machine 100 is provided with a downwardly protruding lower buckle 1103. When the dust cup 200 is attached to the front end of the main machine 100, the lower buckle 1103 is inserted into the clamping groove 213, the lock buckle 140 is in a stable buckling state with the upper buckle 212 under the biasing action of the spring 150, and the dust cup 200 can be kept structurally stable relative to the main machine 100 through the cooperation of the lower buckle 1103 and the clamping groove 213 and the cooperation of the lock buckle 140 and the upper buckle 212. In order to facilitate the user to hold the dust cup 200 stably, the outer shape of the dust cup 200 is preferably provided in a non-cylindrical structure. The connection structure between the dust cup 200 and the main machine 100 in the embodiment can also be provided in other reasonable structures, such as a cooperation structure of double lock buckles and double buckles, and the like. The connection structure between the dust cup 200 and the main machine 100 is not limited by the utility model.

[0061] In the embodiment, the handle 115 is provided with a switch 160 for starting the air flow generating assembly 120, and the front end of the handle 115 is provided with a push block 170 for switching the state of the switch 160. For example, when the push block 170 is pushed forward, the switch 160 is switched from the off state to the on state, and the motor 121 is powered on to start; when the push block 170 is pushed backward, the switch 160 is switched from the on state to the off state, and the motor 121 is powered off to stop. Further, in order to adjust the suction strength of the air flow generating assembly 120, the push block 170 can be provided with a plurality of gear positions which can switch the switch 160 to the on state. As an alternative to the embodiment, a button or a knob can be used instead of the push block 170. As a specific scheme of the embodiment, the switch 160 can be a micro switch.

[0062] In combination Figure 9 , Figure 10 , the embodiment is described by taking a dry and wet handheld vacuum cleaner as an example. In order to meet the working requirements of dry and wet, the support 310 includes a housing part 311 formed with a receiving cavity 313 and a support part 312 arranged at the rear end of the housing part 311, the support part 312 cooperates with the dust cup 200 to erect the filter assembly 300 in the dust cup 200, the filter unit 320 is detachably installed in the receiving cavity 313, and the sidewall of the housing part 311 is provided with a filter screen 330. The dirty liquid sucked into the dust cup 200 is separated from the filter unit 320 by the housing part 311, avoiding the dirty liquid sucked into the dust cup 200 from the dirty liquid inlet channel 400 splashing towards the filter unit 320, causing the filter unit 320 to fail in water, and avoiding the dirty liquid in the dust cup 200 from surging and contacting the filter unit 320 when the user moves the vacuum cleaner, causing the filter unit 320 to fail in water, thereby ensuring the filtering performance of the filter unit 320. Specifically, the support part 312 is generally in the shape of a flat ring, the front end of the housing part 311 is connected to the inner ring of the support part 312, and the buckle part 314 protrudes backward from the outer ring of the support part 312. Since the axial direction of the dust cup 200 in the embodiment is generally arranged in the front-rear direction and the rear end of the cup body 210 is open, the axial direction of the filter assembly 300 installed in the dust cup 200 is also generally arranged in the front-rear direction, and the buckle part 314 is preferably arranged at the top side of the support 310. When the user takes out the filter assembly 300 from the dust cup 200, the user can tilt the dust cup 200 so that the buckle part 314 faces upward and the front end of the dust cup 200 faces downward, thereby avoiding the dirty liquid in the dust cup 200 from being easily spilled out of the dust cup 200 due to the cup opening facing downward. The housing part 311 and the support part 312 of the support 310 can be integrally formed or separately formed and then fixed. As an alternative to the embodiment, the buckle part 314 can also be arranged at other positions on the edge of the support 310, such as the left side or the right side of the support part 312, etc.; in addition, the buckle part 314 can also protrude backward from the front surface of the support part 312, as long as it does not affect the connection and cooperation between the dust cup 200 and the main machine 100.

[0063] In order to facilitate the user to exert force on the support 310 through the gripping portion 314, the gripping portion 314 is provided with a plurality of finger insertion holes 315 penetrating the gripping portion 314, and the user can insert fingers into the finger insertion holes 315 to exert force on the gripping portion 314 when taking out the filter assembly 300, so as to improve the effectiveness of the user exerting force on the support 310 through the gripping portion 314, and further reduce the operation difficulty of the user taking out the filter assembly 300 from the dust cup 200. Further, the finger insertion holes 315 are arranged at intervals along the circumference of the support 310, and the gripping portion 314 is provided with a partition rib 316 located between adjacent two finger insertion holes 315. In the embodiment, two finger insertion holes 315 are arranged along the circumference of the support 310, and the user can insert the index finger and the middle finger into the two finger insertion holes 315 to exert force on the gripping portion 314 when taking out the filter assembly 300, so as to further improve the effectiveness of the user exerting force on the support 310 through the gripping portion 314 to take out the filter assembly 300 from the dust cup 200. As an alternative of the embodiment, the finger insertion holes 315 can also be one, three or other reasonable number; in addition, a recess instead of the finger insertion hole 315 can also be used.

[0064] In order to enable the finger insertion holes 315 to be fully inserted by the user's fingers and effectively exert force on the support 310, the height H and the length L of the finger insertion holes 315 need to be reasonably set, 7mm≤H≤20mm, 15mm≤L≤25mm. In the embodiment, the height H of the finger insertion hole 315 is about 9mm, and the length L of the finger insertion hole 315 is about 23mm. Of course, the height H of the finger insertion hole 315 can also be set to 7mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm or other reasonable size, and the length L of the finger insertion hole 315 can be reasonably set to 15mm, 17mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm, 35mm, 37mm, 40mm or other reasonable size according to the number of finger insertion holes 315.

[0065] In combination with Figure 8In the embodiment, the rear end of the dust cup 200 is provided with a step face 214, and when the filter assembly 300 is installed in the dust cup 200, the support portion 312 is in abutment with the step face 214 so that the filter assembly 300 is limited in the front-rear direction. In addition, the circumferential direction of the support portion 312 is provided with a limiting block 317 which is locally outwardly protruding, and the limiting block 317 and the buckle portion 314 are distributed in the circumferential direction of the support portion 312. Correspondingly, the rear end of the cup body 210 is provided with a limiting groove 215 which is locally outwardly protruding, and when the filter assembly 300 is installed in the dust cup 200, the limiting block 317 cooperates with the limiting groove 215 so that the filter assembly 300 is limited in the circumferential direction. In addition, the clamping groove 213 extends from the groove wall of the limiting groove 215 to the outer surface of the cup body 210. Of course, the clamping groove 213 and the limiting groove 215 can also be distributed in the circumferential direction of the cup body 210.

[0066] In combination Figure 6 In the embodiment, the bracket 310 is provided with a first sealing ring 340, and when the filter assembly 300 is installed in the dust cup 200, the filter assembly 300 and the dust cup 200 are in circumferential sealing cooperation through the first sealing ring 340. Specifically, the support portion 312 is provided with a ring along 3121 which extends rearward from the outer edge, and the first sealing ring 340 is axially positioned on the outer periphery of the ring along 3121. The outer surface of the buckle portion 314 which is away from the axis of the bracket 310 coincides with the outer surface of the ring along 3121 which is away from the axis of the bracket 310. When the filter assembly 300 is installed in the dust cup 200, the first sealing ring 340 is in abutment with the inner wall of the rear end of the dust cup 200 to realize the circumferential sealing cooperation between the filter assembly 300 and the dust cup 200, and in addition, the buckle portion 314 also contacts the inner wall of the dust cup 200. Of course, when the filter assembly 300 is installed in the dust cup 200, the buckle portion 314 can also not contact the inner wall of the dust cup 200, that is, there can be a small gap between the outer surface of the buckle portion 314 and the inner wall of the dust cup 200. As an alternative to the embodiment, the first sealing ring 340 can also be positioned at the joint of the front surface and the outer peripheral surface of the support portion 312, and when the filter assembly 300 is installed in the dust cup 200, the first sealing ring 340 is in abutment with the step face 214 and / or the inner wall of the dust cup 200. At this time, the ring along 3121 can be cancelled. As an optional solution of the embodiment, the first sealing ring 340 can be independently formed and then sleeved on the bracket 310, and the first sealing ring 340 can also be formed together with the bracket 310 by overmolding.

[0067] In the embodiment, the filter unit 320 is detachably installed on the bracket 310, and the filter unit 320 and the bracket 310 are in circumferential sealing cooperation through a second sealing ring 350. In combination Figure 11Specifically, the filter unit 320 comprises a sea band 323, a first end cover 321 and a second end cover 322. The sea band 323 is reciprocally folded and surrounded to form a hollow cylindrical shape. The first end cover 321 is arranged at the front end of the sea band 323 and seals the front end of the cylindrical sea band 323. The second end cover 322 is arranged at the rear end of the sea band 323. The second end cover 322 is provided with a through hole 324 corresponding to the cylindrical sea band 323. A detachable clamping structure is arranged between the second end cover 322 and the support 310. Further, the support 310 is provided with a positioning surface 318 at the inner periphery of the junction between the cover portion 311 and the support portion 312. The second sealing ring 350 is positioned at the positioning surface 318 or the front side of the positioning surface 318. When the filter unit 320 is installed on the support 310, the outer edge of the second end cover 322 is in contact with the positioning surface 318 and the second end cover 322 is in contact with the second sealing ring 350. The second sealing ring 350 keeps the filter unit 320 and the support 310 in circumferential sealing cooperation. The second end cover 322 is provided with a plurality of clamping blocks 325 which are spaced apart along the circumference and protrude outward. The support 310 is provided with clamping grooves 319 corresponding to the clamping blocks 325 at the positioning surface 318. The filter unit 320 is detachably installed on the support 310 through the cooperation of the clamping blocks 325 and the clamping grooves 319. As a preferred scheme of the present embodiment, the first end cover 321 and the second end cover 322 are respectively fixed at the front and rear ends of the sea band 323, so that the filter unit 320 is modularized and can be used as a replaceable module. As an alternative scheme of the present embodiment, the positions of the clamping blocks 325 and the clamping grooves 319 can be interchanged. As an optional scheme of the present embodiment, the second sealing ring 350 can be independently formed and arranged on the support 310. The second sealing ring 350 can also be formed together with the support 310 by overmolding.

[0068] In order to facilitate the disassembly and assembly of the filter unit 320, the second end cover 322 is provided with a gripping rib 326 on the side facing away from the sea band 323. The user can apply force to the filter unit 320 through the gripping rib 326 to rotate the clamping blocks 325 into the clamping grooves 319 to achieve the installation of the filter unit 320, or rotate the filter unit 320 in the opposite direction to detach the clamping blocks 325 from the clamping grooves 319 to achieve the disassembly of the filter unit.

[0069] In the embodiment, the front side of the support part 312 is provided with a protruding rib 3122 around the filter unit 320 and located in the inner periphery of the ring 3121, the protruding rib 3122 is covered by the third sealing ring 360, when the dust cup 200 provided with the filter assembly 300 is attached to the main machine 100, the third sealing ring 360 is in contact with the front protruding ring 1102 on the front shell 111, so that the filter assembly 300 and the front wall of the main machine 100 are in circumferential sealing cooperation. As an optional solution of the embodiment, the third sealing ring 360 can be independently formed and arranged on the bracket 310, and the third sealing ring 360 can also be formed together with the bracket 310 by overmolding.

[0070] In the embodiment, in order to ensure the separation effect of the filter unit 320 on dirt and airflow, the inner diameter of the accommodation cavity 313 is greater than the outer diameter of the hepa 323, so as to ensure the effective filtering area of the hepa 323. The filter screen 330 is preferably arranged on the top side of the shell part 311, so that the filter screen 330 is arranged as high as possible in the dust cup 200, avoiding the flowing of the turbulent dirty liquid in the dust cup 200 through the filter screen 330 into the accommodation cavity 313 and flowing towards the airflow generating assembly 120. The filter screen 330 is provided with dense and small filter holes, the airflow is filtered by the filter screen 330 for the first time, avoiding larger particles, debris and other dirt following the airflow into the accommodation cavity 313, and the airflow is filtered by the hepa 323 for the second time, avoiding dust and other small dirt following the airflow into the airflow generating assembly 120.

[0071] In combination Figure 12 In the embodiment, the outer side of the shell part 311 is provided with a water baffle 370 covering at least part of the filter screen 330, specifically, the side of the water baffle 370 facing the filter screen 330 is substantially U-shaped, the outer surface of the shell part 311 is provided with a substantially U-shaped insertion slot 3111 around the rear end of the filter screen 330, the side of the water baffle 370 facing the filter screen 330 is inserted into the insertion slot 3111 to realize connection to the bracket 310, and the connection between the water baffle 370 and the bracket 310 is in sealing cooperation, the water baffle 370 covers the rear part of the filter screen 330, and the front end of the water baffle 370 and the filter screen 330 have a ventilation opening 380, the airflow flowing into the dust cup 200 can flow to the filter screen 330 through the ventilation opening 380. In combination Figure 13When the dust cup 200 is upward relative to the main machine 100, the dirty liquid in the dust cup 200 is accumulated at the rear end of the dust cup 200 under the action of gravity. At this time, since the filter assembly 300 and the inner wall of the dust cup 200 are in circumferential sealing fit, the dirty liquid cannot leak backward through the gap between the filter assembly 300 and the dust cup 200. In addition, due to the blocking effect of the water baffle 370, the dirty liquid cannot flow into the accommodation cavity 313 through the filter screen 330 and flow toward the airflow generating assembly 120. As an alternative to the present embodiment, the water baffle 370 can also cover the entire filter screen 330 in space. At this time, the front end of the water baffle 370 and the filter screen 330 still have a ventilation opening 380. As another alternative to the present embodiment, the water baffle 370 can also be omitted.

[0072] In the present embodiment, the lower part of the front wall of the cover portion 311 is recessed backward to form a guide cavity 3112. The rear end of the dirty liquid inlet channel 400 projects in the front-rear direction substantially within the range of the guide cavity 3112. The dirty liquid flowing into the dust cup 200 from the dirty liquid inlet channel 400 is blocked by the guide cavity 3112 and flows downward along the cavity wall of the guide cavity 3112 and falls into the dust cup 200. This avoids the dirty liquid flowing into the dust cup 200 from the dirty liquid inlet channel 400 spreading toward the filter screen 330 along the support 310 and flowing into the accommodation cavity 313 through the filter screen 330.

[0073] In use, the filter assembly 300 is first installed in the dust cup 200, and then the dust cup 200 is attached to the front end of the main machine 100. When the handheld vacuum cleaner 10 is in operation, the airflow generating assembly 120 provides suction to draw air in the dust cup 200 to make the dust cup 200 in a negative pressure state. The valve piece 230 is opened under the action of the air pressure difference to make the dirty liquid inlet channel 400. The external air flows into the dust cup 200 from the dirty liquid inlet channel 400 under the action of the air pressure difference to form an air flow (AF). The dirt can flow into the dust cup 200 along with the air flow. The air flow AF flowing into the dust cup 200 flows into the accommodation cavity 313 through the filter screen 330. The filter screen 330 performs primary filtration on the air flow. The air flow AF flowing into the accommodation cavity 313 is filtered by the hepa 323 and then flows into the air guide cover 123 through the air inlet hole 117, the air inlet cavity 101 and the air suction port 124 in sequence. The air flow flowing into the air guide cover 123 flows out of the main machine 100 through the air outlet in sequence.

[0074] When the dust cup 200 needs to be cleaned after the handheld cleaner 10 is used, the dust cup 200 is detached from the main machine 100, and then the support 310 is forced by the buckle 314. Since the buckle 314 is eccentrically arranged relative to the support 310, the local part of the support 310 close to the buckle 314 is first separated from the dust cup 200, that is, the local part of the support 310 is first separated from the dust cup 200, and then the filter assembly 300 is taken out from the dust cup 200 by the buckle 314. When the filter unit 320 needs to be cleaned or replaced, the filter unit 320 can be rotated by the holding rib 326 to release the engagement of the clamping block 325 and the clamping groove 319, and then the filter unit 320 can be taken out from the support 310. When the filter unit 320 needs to be installed on the support 310, the filter unit 320 is rotated by the holding rib 326 to make the clamping block 325 rotate into the clamping groove 319.

[0075] It can be understood that the specific style of the handheld cleaner 10 is not limited to the above description and the drawings, and the handheld cleaner 10 can also be arranged in other reasonable styles, such as the axial direction of the dust cup and the filter assembly being arranged in the up-down direction. At this time, the buckle is protruded upward from the edge of the support part away from the filter unit.

[0076] Embodiment Two

[0077] In this embodiment, the handheld cleaner is a dry cleaner, and accordingly, the specific structure of the filter assembly 300 is slightly different from that in Embodiment One. In combination with Figure 14 The support 310 is substantially a flat ring, that is, the support 310 does not need to be provided with a cover part and a receiving cavity, the filter unit 320 is detachably attached to one side of the support 310, and the hepa 323 of the filter unit 320 filters the air flow from the dust cup 200 to the air flow generating assembly. The separated dirt falls into the dust cup.

[0078] When the axial direction of the dust cup is arranged in the front-back direction, the buckle 314 is protruded backward from the edge of the support 310, the filter unit 320 is detachably attached to the front side of the support 310, the second end cover 322 is provided with a plurality of clamping blocks 325 which are distributed in the circumferential direction and protrude outward, and the front side of the support 310 is provided with clamping grooves 319 corresponding to the clamping blocks 325. The filter unit 320 is detachably attached to the front side of the support 310 by the clamping blocks 325 and the clamping grooves 319. As an alternative of this embodiment, the positions of the clamping blocks 325 and the clamping grooves 319 can be interchanged.

[0079] In the embodiment, the holding ribs on the second end cover 322 can be cancelled because the filter unit 320 is exposed relative to the support 310 when the filter unit 320 is attached to the support 310. When the filter unit 320 needs to be detached from the support 310, the user can directly hold the second end cover 322 and rotate it relative to the support 210 to release the clamping fit of the two.

[0080] It can be understood that the filter unit 320 can also be detachably attached to the support 310 by other ways such as threaded fit.

[0081] In the embodiment, the first sealing ring 340 and / or the second sealing ring 350 can be independently formed and then arranged on the support 310, or can be formed together with the support 310 by overmolding.

[0082] It can be understood that the axial direction of the dust cup and the filter assembly of the handheld vacuum cleaner can also be arranged in the up-down direction. In this case, the filter unit 320 is detachably attached to the bottom side of the support 310, and the buckling part 314 protrudes upward from the edge of the support 310 away from the filter unit 320.

[0083] The other structures of the second embodiment are the same as those of the first embodiment, and will not be described here.

[0084] In addition to the preferred embodiments described above, the utility model also has other implementation manners, and those skilled in the art can make various changes and modifications according to the utility model, as long as the changes and modifications do not deviate from the spirit of the utility model, and all should belong to the range defined in the claims of the utility model.

Claims

1. A handheld vacuum cleaner, comprising: a main body including a housing and an airflow generating assembly arranged in the housing; a dust cup detachably attached to the main body; a filter assembly detachably mounted in the dust cup; a dirty air inlet passage for guiding external air and / or dirt into the dust cup; characterized in that the filter assembly comprises a bracket cooperating with the dust cup and a filter unit arranged on the bracket, the bracket is provided with a catch portion protruding away from the filter unit at an edge of the bracket, the catch portion is configured to be caught to release the sealing cooperation between the bracket and the dust cup.

2. The hand vacuum cleaner of claim 1, wherein, The catch portion is provided with a hand hole.

3. The hand vacuum cleaner of claim 2, wherein, A plurality of hand holes are arranged at intervals along a circumferential direction of the bracket, and the catch portion is provided with a partition rib between adjacent hand holes.

4. The hand vacuum cleaner of claim 2, wherein, The height of the hand hole is H, and 7mm≤H≤20mm. And / or, the length of the hand hole is L, and 15mm≤L≤40mm.

5. The hand vacuum cleaner of claim 1, wherein, The axial direction of the filter unit is arranged in a front-rear direction, and the catch portion is arranged on a top side of the bracket; and / or, the filter assembly mounted in the dust cup is in contact with an inner wall of the dust cup through the catch portion.

6. The hand vacuum cleaner of claim 1, wherein, The bracket is provided with a first sealing ring, and the filter assembly mounted in the dust cup is in circumferential sealing cooperation with the dust cup through the first sealing ring; and / or, the filter unit is detachably mounted on the bracket, and the filter unit and the bracket are in circumferential sealing cooperation through a second sealing ring.

7. The hand vacuum cleaner of claim 1, wherein, The bracket comprises a cover portion formed with a receiving cavity and a support portion arranged at one end of the cover portion, the support portion cooperates with the dust cup to support the filter assembly in the dust cup, the filter unit is detachably mounted in the receiving cavity, a filter screen is arranged on a side wall of the cover portion, and the catch portion protrudes away from the filter unit at an edge of the support portion.

8. The hand vacuum cleaner of claim 7, wherein, The outer side of the cover portion is provided with a water shield covering at least part of the filter screen.

9. The hand vacuum cleaner of claim 1, wherein, The bracket is in the shape of a flat ring, and the filter unit is detachably attached to one side of the bracket.

10. The hand vacuum cleaner of claim 1, wherein, The filter unit comprises a Hepa, a first end cover and a second end cover, the Hepa is reciprocally crimped and surrounds a hollow cylindrical shape, the first end cover and the second end cover are arranged at two ends of the Hepa respectively, the second end cover is provided with an opening corresponding to the cylindrical Hepa, and a detachable clamping structure is arranged between the second end cover and the bracket.

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