CN213155647U - Hand-held type dust catcher - Google Patents

Abstract

The utility model provides a hand-held dust collector, which comprises a main body with a dust collection port at the front end, a handle positioned at the rear side of the main body, a fan arranged at the rear part of the main body and a dust box component positioned between the fan and the dust collection port, wherein the dust box component comprises a dust box and a primary filter device, a secondary filter device and a tertiary filter device which are sequentially arranged along the flowing direction of gas, at least one part of a first dust collection cavity, a second dust collection cavity positioned at the outer side of the first dust collection cavity and a plurality of filter holes for communicating the first dust collection cavity and the second dust collection cavity are formed on the dust box; the primary filtering device is arranged at the air outlet end of the first dust collecting cavity. This dust box subassembly that openly has above-mentioned structure can separate out some dust from rubbish through filtering the hole, separates out most dust from the air through second grade filter equipment, separates out remaining dust from the air through tertiary filter equipment, has realized the separation step by step to the dust, has improved the separation effect of dust and filter equipment's life effectively.

Description

Hand-held type dust catcher

Technical Field

The utility model belongs to the technical field of cleaning device, specifically provide a hand-held type dust catcher.

Background

Along with the improvement of living standard of people, the dust collector enters more and more families, and is convenient for the family life of people.

The vacuum cleaner is a product for picking up dust, hair, debris and other garbage on the ground, a bed, a sofa, a corner and the like through negative pressure.

In order to retain debris drawn into the cleaner and to allow air to flow unimpeded out of the cleaner, multi-stage filters are typically provided on the cleaner. Specifically, the dust collector is provided with a metal filter screen for filtering large-size garbage and filter paper for filtering small-size garbage.

In order to prolong the service life of the filter paper, the existing dust collector is also provided with a cyclone separator between the metal filter screen and the filter paper, and the cyclone separator can separate garbage (such as dust) with larger mass from the airflow so as to realize the filtering function.

However, when the dust on the ground is thick, the cyclone separator cannot effectively separate the dust in the air, and still more dust flows to the filter paper and is filtered by the filter paper, so that the filter paper is increased in filtering load, and the service life of the filter paper is shortened. Meanwhile, as the dust is easy to be attached to the cyclone separator, especially when the dust in the air is more, the use effect of the cyclone separator is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems in the prior art, i.e. to solve at least one technical problem mentioned above, the present disclosure provides a handheld vacuum cleaner, including a main body having a dust collection opening at a front end thereof, a handle located at a rear side of the main body, a fan disposed at a rear portion of the main body, and a dust box assembly located between the fan and the dust collection opening, wherein the dust box assembly includes a dust box and a primary filter device, the dust box is formed with at least a portion of a first dust collection chamber, a second dust collection chamber located at an outer side of the first dust collection chamber, and a plurality of filter holes communicating the first dust collection chamber and the second dust collection chamber; the primary filtering device is arranged at the air outlet end of the first dust collecting cavity.

Optionally, the plurality of filtering holes are arranged at the bottom of the first dust collecting cavity; and/or each filter hole is provided with a conical hole, and the large opening of the conical hole faces the first dust collection cavity; and/or the axes of a plurality of the filter holes are parallel to each other.

Optionally, the axis of each of the filter holes is parallel to the up-down direction of the dust box.

Optionally, the primary filter device is a conical filter screen, and the axis of the filter screen is parallel to the axis of the first dust collecting chamber.

Optionally, the dust box assembly further comprises a secondary filter device located downstream of the primary filter device on the axis of the first dust collection chamber; the dust box is also provided with a third dust collecting cavity which can receive the dust separated by the secondary filter device.

Optionally, the secondary filtering device is a cyclone separating structure, and a through hole communicated with the third dust collecting cavity is formed on a side wall of the cyclone separating structure.

Optionally, the dirt tray assembly further comprises a tertiary filter device located downstream of the secondary filter device and upstream of the fan on the axis of the first dirt collection chamber.

Optionally, the three-stage filtering device comprises a shell and filter cotton and/or filter paper arranged inside the shell, and a part of the shell can be inserted into the cyclone separation structure; and/or the housing is pivotally connected to the dust box.

Optionally, the part of the structure of the housing is provided as a tapered structure.

Optionally, an air inlet channel for communicating the dust suction port with the first dust collecting cavity is formed on the main body, and the air inlet channel is arranged to enable the airflow entering the first dust collecting cavity to be spiral along the side wall of the first dust collecting cavity; and/or at least one part of the dust box is provided with a U-shaped structure, and the first dust collection cavity is formed between the U-shaped structure and the main body in the working state of the handheld dust collector.

Based on the foregoing description, it can be understood by those skilled in the art that, in the foregoing technical solution of the present disclosure, by providing the primary filtering device at the air outlet end of the first dust collecting cavity, the primary filtering device can trap garbage with a larger size in the first dust collecting cavity; the second dust collecting cavity is arranged outside the first dust collecting cavity, the first dust collecting cavity is communicated with the second dust collecting cavity through the plurality of filtering holes, partial dust in the first dust collecting cavity can penetrate through the filtering holes to enter the second dust collecting cavity, the quantity of dust entering the filtering device at the downstream of the first-level filtering device is reduced, the dust filtering efficiency of the handheld dust collector is improved, the filtering burden of the filtering device at the downstream of the first-level filtering device is reduced, and the service life of the filtering device at the downstream of the first-level filtering device is prolonged.

In one example of the present disclosure, by providing a plurality of filtering holes at the bottom of the first dust collecting chamber, dust in the first dust collecting chamber can pass through the filtering holes into the second dust collecting chamber under the influence of its own weight. Furthermore, the axial line of each filter hole is parallel to the up-down direction of the dust box, and the airflow entering the first dust collecting cavity is spiral along the side wall of the first dust collecting cavity, so that the airflow dust entering the first dust collecting cavity can have centrifugal force, and can pass through the filter holes to enter the second dust collecting cavity under the action of the centrifugal force.

Furthermore, through set up second grade filter equipment (specifically cyclone separation structure) and tertiary filter equipment (specifically filtering cotton or filter paper) in first-order filter equipment's low reaches for the dirt box subassembly can be through filtering some dust of hole from rubbish separation, through the most dust of second grade filter equipment follow separation in the air, through tertiary filter equipment follow remaining dust of air separation, realized the separation step by step to the dust, the separation effect of dust has been improved effectively, filter equipment's life has been prolonged.

Drawings

Preferred embodiments of the present disclosure are described below with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of a split structure of a cleaning apparatus in a preferred embodiment of the present disclosure;

FIG. 2 is a schematic view illustrating the effect of the cleaning device in the preferred embodiment of the present disclosure;

FIG. 3 is a schematic view of a split structure of a hand-held cleaner in a preferred embodiment of the present disclosure;

FIG. 4 is a first isometric view of the main body of the hand-held cleaner in the preferred embodiment of the present disclosure;

FIG. 5 is a second isometric view of the main body of the hand-held cleaner in the preferred embodiment of the present disclosure;

FIG. 6 is a view of the body of FIG. 4 taken in the direction A;

FIG. 7 is a schematic illustration of the shackle of the main body in a locked condition in a preferred embodiment of the present disclosure;

FIG. 8 is a schematic illustration of the shackle of the main body in an unlocked condition in a preferred embodiment of the present disclosure;

FIG. 9 is a bottom view of the dirt box portion of the preferred embodiment of the present disclosure;

FIG. 10 is an isometric view of a portion of a dust box in a preferred embodiment of the present disclosure;

FIG. 11 is a cross-sectional view of the dirt box portion of FIG. 10 taken along the direction B-B;

FIG. 12 is a first isometric view of a battery and a cover shell in a preferred embodiment of the present disclosure;

FIG. 13 is a second isometric view of the battery and cover shell in the preferred embodiment of the present disclosure;

FIG. 14 is a first isometric view of an extension pole in a preferred embodiment of the present disclosure;

FIG. 15 is a second axial view of the extension pole in the preferred embodiment of the present disclosure;

FIG. 16 is a first isometric view of the charging dock in a preferred embodiment of the present disclosure;

FIG. 17 is an enlarged view of portion C of FIG. 16;

fig. 18 is a second isometric view of the charging dock in a preferred embodiment of the present disclosure.

List of reference numerals:

10. a hand-held vacuum cleaner;

11. a main body; 111. a dust suction port; 112. an air inlet channel; 113. a first snap fit structure; 114. a first unlocking key; 115. a second snap fit structure; 116. a second unlocking key; 117. a latch hook; 118. a transmission member; 119. a third unlocking key;

12. a handle; 121. a battery receiving cavity; 122. a first power pin; 123. a card slot; 124. a let position port; 125. l-shaped limiting ribs; 1251. a first limit groove; 126. a guide rib;

13. a fan;

14. a dust box assembly; 141. a dust box; 1411. a first dust collection chamber; 14111. a first ash discharge port; 1412. a second dust collecting chamber; 14121. a second ash discharge port; 1413. a third dust collecting chamber; 14131. a third ash discharge port; 1414. a first engaging structure; 1415. a filtration pore; 142. a primary filtration device; 143. a secondary filtration device; 1431. a through hole; 144. a third stage filtration device; 1441. a second engaging structure;

15. a battery; 151. a boss; 152. a power jack; 153. limiting ribs; 154. a guide groove;

16. a cover shell; 161. a cantilever; 162. buckling; 163. a pressing structure;

20. an extension pole; 21. a rod body; 22. a power receiving terminal; 23. a first electrical connection terminal; 24. a second electrical connection terminal; 25. a limiting structure; 251. a T-shaped limiting bulge; 252. a baffle plate;

30. a cleaning head assembly; 31. a connecting rod;

40. a charging seat;

41. a base; 411. a front stop structure; 412. a left stop structure; 413. a right stop structure;

42. a column; 421. a fixing member; 422. a charging terminal; 423. a T-shaped limiting groove; 424. a tapered groove; 425. a groove; 426. a socket; 427. a battery charging chamber; 4271. a second power pin; 4272. an arc-shaped boss; 4273. a slide bar; 4274. a limiting bulge; 42741. a second limit groove.

Detailed Description

It should be understood by those skilled in the art that the embodiments described below are only preferred embodiments of the present disclosure, and do not mean that the present disclosure can be implemented only by the preferred embodiments, which are merely for explaining the technical principles of the present disclosure and are not intended to limit the scope of the present disclosure. All other embodiments that can be derived by one of ordinary skill in the art from the preferred embodiments provided by the disclosure without undue experimentation will still fall within the scope of the disclosure.

It should be noted that in the description of the present disclosure, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as appropriate.

As shown in fig. 1 and 2, in a preferred embodiment of the present disclosure, the cleaning apparatus mainly includes a hand-held cleaner 10, an extension pole 20, and a cleaning head assembly 30. Among them, the hand-held cleaner 10 can be used alone, i.e., pick up foreign materials/trash (dust, paper dust, hair, etc.) on the floor by the negative pressure generated by it; the hand-held cleaner 10 may also be directly coupled to the cleaning head assembly 30 such that the cleaning head assembly 30 is in contact with the floor surface and foreign materials/debris on the floor surface are picked up by the cleaning head assembly 30; the hand-held cleaner 10 can also be coupled to the extension pole 20 first and then coupled to the cleaning head assembly 30 via the extension pole 20 as shown in fig. 2, thereby enabling the cleaning apparatus to have a sufficient height for the user to operate.

With continued reference to fig. 1 and 2, in a preferred embodiment of the present disclosure, the cleaning device is further configured with a charging dock 40, the charging dock 40 being capable of securing the cleaning device in an upright position as shown in fig. 2, so as to reduce the footprint of the cleaning device. Further, the charging stand 40 can also charge the battery 15 (shown in fig. 3) on the hand-held cleaner 10.

As shown in fig. 3, in a preferred embodiment of the present disclosure, the hand-held cleaner 10 basically includes a main body 11, a handle 12, a fan 13, a dust box assembly 14, a battery 15 and a cover housing 16. Wherein, the handle 11 is arranged at the rear side of the main body 11 and is fixedly connected with the main body 11 or is integrally manufactured; the blower 13 is fixedly installed to the rear of the main body 11; a dust box assembly 14 detachably mounted to the main body 11 and located at a front side of the blower 13; the battery 15 is detachably mounted to the handle 12, i.e., the user can mount the battery 15 to the handle 12 or detach the battery 15 from the handle 12 as desired; the cover shell 16 is fixedly connected with the battery 15 and can be detachably mounted with the handle 12, thereby realizing the detachable connection of the battery 15 and the handle 12.

In a preferred embodiment of the present disclosure, the center of gravity of the hand-held cleaner 10 is located between the fan 13 and the handle 12. Since the weight of the hand-held cleaner 10 is mainly concentrated on the fan 13 and the battery 15, in the preferred embodiment of the present disclosure, the center of gravity of the hand-held cleaner 10 is located between the fan 13 and the handle 12 mainly by configuring the relative positional relationship between the battery 15 and the fan 13 and other components on the hand-held cleaner 10.

Further, although not shown in the drawings, a support portion is formed at the bottom of the joint of the main body 11 and the handle 12, and the battery 15 and the fan 13 are configured to enable the center of gravity of the handheld vacuum cleaner 10 to be located at the front side of the support portion, so that the center of gravity of the handheld vacuum cleaner 10 is as close as possible to the handle 12 on the premise of satisfying the production and processing processes, thereby reducing the moment arm between the center of gravity of the handheld vacuum cleaner 10 and the user when the user holds the handle 12, and therefore reducing the torque applied to the user by the weight of the handheld vacuum cleaner 10, and enabling the force applied to the user to be substantially the same regardless of the state of the handheld vacuum cleaner 10, thereby improving the user experience.

Although not shown in the drawings, to facilitate user operation, the support portion includes a recessed structure that can be abutted by at least one finger of an operator, thereby enabling the user to make changes in pitch of the handheld cleaner 10 with the finger placed in the recessed structure as a support point.

As shown in fig. 3 to 8, the main body 11 is provided with a dust suction opening 111, an air intake passage 112, a first snap-fit structure 113, a first unlocking key 114, a second snap-fit structure 115, a second unlocking key 116, a locking hook 117 as a locking member, a transmission member 118, and a third unlocking key 119.

As shown in fig. 3 to 5, the main body 11 can be generally divided into three parts: a front portion provided with a dust suction opening 111 and an air intake passage 112, a middle portion for mounting the dust box assembly 14, and a rear portion for mounting the fan 13. Wherein, the front end of the front part is formed with an inclined plane, and the dust suction opening 111 is arranged at the front end of the main body 11 and formed on the inclined plane, so that when the hand-held cleaner 10 is used alone, the main body 11 is only required to be inclined for a certain angle to obtain good contact between the dust suction opening 111 and the surface to be cleaned, thereby facilitating the operation and use of users. The air inlet passage 112 penetrates the front portion of the main body 11 along the front-rear direction of the main body 11, and the front end of the air inlet passage 112 is connected with the dust suction port 111, and the rear end of the air inlet passage 112 is opened to the middle portion of the main body 11. As can be seen, the central portion of the main body 11 is U-shaped or C-shaped in cross-section such that the central portion of the main body 11 fits into the dirt tray assembly 14 and a cylindrical first dirt collection chamber 1411 (shown in FIG. 9) is formed between the main body 11 and the dirt tray assembly 14. Further, although not shown in the drawings, the air intake passage 112 is provided to make the airflow entering into the first dust collecting chamber 1411 spiral along the side wall of the first dust collecting chamber 1411.

Wherein an angle between the inclined surface formed at the front end of the front portion of the main body 11 and the main body 11 is 30 ° to 60 °, for example, 30 °, 45 °, 50 °, 60 °, etc., preferably 45 °.

As shown in fig. 3-6, a first snap-fit structure 113 is provided at the front of the main body 11 for locking the dust box 141 of the dust box assembly 14 to the main body 11, such that the main body 11 and the dust box 141 enclose and enclose the first dust collection chamber 1411. Further, the dust box 141 may be separately formed into the first dust collecting chamber 1411 as needed by those skilled in the art. The first unlocking key 114 is used to shift the first snap-fit structure 113 from the locked state to the unlocked state, and the first unlocking key 114 is provided at the rear of the main body 11 and near the handle 12 so that the first unlocking key 114 is operated by the left hand (or right hand) of the user holding the handle 12, thereby allowing the user to operate the hand-held cleaner 10 with one hand. In one example, the first snap-fit structure 113 is a hook provided on the main body 11, the hook being pivotally connected to the main body 11, the hook also being drivingly connected to the first unlocking key 114 via a linkage. A spring is also provided between the link and the body 11 for rotating the hook from the unlocked state to the locked state. When the first unlocking key 114 is pushed toward the front side of the main body 11, the first unlocking key 114 converts the hook from the locked state to the unlocked state by the link.

With continued reference to fig. 3-6, the second snap-fit structure 115 and the second unlocking key 116 are provided as a single piece and are pivotally provided on the rear portion of the main body 11. Specifically, the second unlocking key 116 is a plate-shaped member pivotally connected to the main body 11, and the second snap-fit structure 115 is a hook provided on the upper side of the front end of the second unlocking key 116. Further, a torsion spring is provided between the second unlocking key 116 and the main body 11 for holding the catch in the locked position so as to lock the tertiary filter device 144 of the dust box assembly 14 to the main body 11. When the rear of the second unlocking key 116 is depressed, the second snap-fit structure 115 rotates downward to the unlocked position, allowing the tertiary filter 144 of the dirt box assembly 14 to be removed from the main body 11.

With continued reference to fig. 3 to 6, a third unlocking key 119 is provided at the rear of the main body 11 and near the handle 12, so that the third unlocking key 119 is operated by the left hand (or right hand) of the user holding the handle 12, thereby allowing the user to operate the hand-held cleaner 10 with one hand. Specifically, the third unlocking key 119 is provided in an L-shaped configuration to facilitate an operator (user) pulling the third unlocking key 119 in a direction toward the handle 12. Further, a third unlocking key 119 is provided on each of the left and right sides of the main body 11; one of the two third unlocking keys 119 can be operated by the thumb of the operator and the other of the two third unlocking keys 119 can be operated by the index finger of the operator.

As shown in fig. 7 and 8, the latch hook 117 is pivotally connected to the main body 11, and specifically, the latch hook 117 has an L-shaped configuration as a whole. One end of the L-shaped structure is provided with a hook, the other end is in driving connection with a transmission member 118, and the other end of the transmission member 118 is in driving connection with a third unlocking key 119. Optionally, the transmission member 118 is pivotally connected to the locking hook 117 and the third unlocking key 119, respectively.

Further, although not shown in the drawings, a spring is provided between the locking hook 117 or the transmission member 118 or the third unlocking key 119 and the main body 11, and the spring is used for keeping the locking hook 117 in the locking position shown in fig. 7. Since the spring for realizing the function belongs to the conventional technical means in the field, the description is not excessive.

Further, although not shown in the drawings, the latch hook 117 is provided at the front of the main body 11 and protrudes into the air intake passage 112 in the locked position shown in fig. 7 and retracts to the outside of the air intake passage 112 in the unlocked position shown in fig. 8.

It can be understood by those skilled in the art that the locking hook 117 in the locking position shown in fig. 7 locks the extension pole 20 or the cleaning head assembly 30 to the main body 11 in a state where the extension pole 20 or the cleaning head assembly 30 is inserted into the air intake passage 112. When the user pulls the third unlocking key 119 backward, the locking hook 117 rotates from the locking position shown in fig. 7 to the unlocking position shown in fig. 8, allowing the extension pole 20 or the cleaning head assembly 30 to be separated from the main body 11.

Furthermore, it will be appreciated by those skilled in the art that the latch hook 117 may be any other suitable locking member, such as a sliding bar, an electromagnetic push bar, etc., while ensuring that the extension bar 20 or the cleaning head assembly 30 can be locked to the hand-held cleaner 10.

Further, it will be appreciated by those skilled in the art that the latch hook 117 may be provided at any other feasible location on the main body 11, such as at the front end of the main body 11 and on the outer surface of the main body 11 and outside of the suction opening 111, provided that the extension pole 20 or the cleaning head assembly 30 can be locked to the hand-held cleaner 10.

As shown in fig. 3 to 6, the handle 12 and the main body 11 have an included angle therebetween, which enables the main body 11 to assume a downwardly inclined state when a user holds the handle 12, so that the user can more comfortably hold the handle 12 when the dust suction opening 111 of the main body 11 is in contact with the floor. Wherein the angle is in the range of 5 ° to 30 °, preferably 10 ° to 15 °. It should be noted that the range of the included angle includes 5 °, 10 °, 15 ° and 30 °.

With continued reference to fig. 3 to 6, the handle 12 is provided with a battery accommodating cavity 121, a first power pin 122, a slot 123, an abdicating opening 124, an L-shaped limiting rib 125 as a limiting structure, and a guiding rib 126. The battery receiving chamber 121 is used for receiving the battery 15. As can be seen from fig. 5, the battery receiving cavity 121 extends up to the junction of the handle 12 and the main body 11 to enable the battery 15 to be inserted into the junction, thereby effectively reducing the length of the hand-held cleaner 10.

As shown in fig. 5 and 6, the first power supply pin 122 is provided on the bottom wall of the battery mounting cavity 121 to be inserted into a power supply insertion hole 152 serving as a connection terminal on the battery 15.

It will be appreciated by those skilled in the art that the first power pin 122 may be provided on the battery 15 as a terminal and the power jack 152 may be provided on the bottom wall of the battery mounting cavity 121 as required by those skilled in the art, while ensuring that the battery 15 can provide power to the hand-held cleaner 10. In other words, a power plug is provided on the battery 15, and a power jack is provided on the bottom wall of the battery mounting cavity 121.

As shown in fig. 5, a catch 123 is provided on the side wall of the battery mounting cavity 121 near the mounting opening thereof, the catch 123 mates with a catch 162 (shown in fig. 12 and 13) on the cover shell 16, and the mating catch 123 and catch 162 can secure the battery 15 and cover shell 16 to the handle 12.

As shown in fig. 3 to 5, the position-giving opening 124 is disposed at an end of the handle 12 away from the main body 11, and is used for avoiding a pressing structure 163 (shown in fig. 12 and 13) on the cover shell 16, so as to facilitate the operation of the pressing structure 163 by the user. Preferably, the relief opening 124 is configured as a U-shape or a C-shape.

As shown in fig. 5 and 6, an L-shaped stopper rib 125 as an example of a stopper structure for the battery 15 is provided on the bottom wall of the battery receiving cavity 121, and the L-shaped stopper rib 125 is used to guide a power supply jack 152 (shown in fig. 12 and 13) on the battery 15 to align with the first power supply pin 122 in the battery receiving cavity 121 during the insertion of the battery 15 into the battery receiving cavity 121. Further, a limiting groove 1251 is formed in one side plate of the L-shaped limiting rib 125, and the limiting groove 1251 is adapted to the limiting rib 153 (shown in fig. 12 and 13) of the battery 15. The limiting groove 1251 can precisely guide the power supply socket 152 (shown in fig. 12 and 13) on the battery 15 to align with the first power supply pin 122 in the battery receiving cavity 121, and can prevent the first power supply pin 122 from shaking in the power supply socket 152.

Furthermore, the L-shaped retention rib 125 may be configured as any other feasible retention structure, such as a tapered post, as desired by those skilled in the art, provided that the power receptacle 152 on the battery 15 can be guided into alignment with the first power pin 122 in the battery receiving cavity 121.

As shown in fig. 5, a guide rib 126 as an example of a guide engagement structure is provided on a side wall of the battery accommodating chamber 121, and the guide rib 126 is fitted with a guide groove 154 (shown in fig. 12 and 13) as a guide structure on the battery 15. The guide rib 126 serves to guide the insertion of the battery 15 into the battery receiving cavity 121, and can prevent the battery 15 from rotating and being inserted reversely.

It will be appreciated by those skilled in the art that the guide ribs 126 could be replaced by any other suitable guide engagement structure, such as guide slots, provided that the battery 15 is prevented from being inserted backwards. In other words, the guide groove 154 of the battery 15 may be disposed on the sidewall of the battery receiving cavity 121 and the guide rib 126 of the sidewall of the battery receiving cavity 121 may be disposed on the battery 16 as required by those skilled in the art.

As shown in fig. 3, in order to further guide the insertion of the battery 15 into the battery receiving cavity 121, the cross-sections of the battery receiving cavity 121 and the battery 15 are both provided in a non-circular shape, preferably an elliptical shape.

As shown in FIG. 3, the dirt box assembly 14 basically includes a dirt box 141, a primary filter arrangement 142, a secondary filter arrangement 143 and a tertiary filter arrangement 144. Wherein, the primary filter device 142 and the secondary filter device 143 are both disposed on the dust box 141 and fixedly connected with the dust box 141. The third-stage filtering device 144 (specifically, the housing of the third-stage filtering device 144) is pivotally connected to a rear end of the dust box 141, and specifically, a lower rear position of the dust box 141 is pivotally connected to a lower front position of the third-stage filtering device 144. As can be seen from fig. 3, the primary filter device 142, the secondary filter device 143, and the tertiary filter device 144 are sequentially disposed along the direction of the gas flow, and the primary filter device 142 is disposed at the air outlet end of the first dust collecting chamber 1411.

Although not explicitly shown in the drawings, in the preferred embodiment of the present disclosure, the primary filtering device 142 is a conical filter screen, the secondary filtering device 143 is a cyclone structure, and the tertiary filtering device 144 includes a housing (not shown) and filter cotton and/or filter paper (not shown) disposed inside the housing.

As shown in fig. 1 and 3, in an assembled state of the hand-held cleaner 10, the top of the dust box 141 is attached to the middle of the main body 11, and the front end of the dust box 141 is attached to the front of the main body 11, and thus the dust box 141 and the main body 11 together enclose a first dust collecting chamber 1411 (as shown in fig. 9). The first engaging structure 1414 (shown in fig. 10) at the front end of the dust box 141 is fastened to the first engaging structure 113 on the main body 11. As mentioned above, the first engaging structure 113 is a hook, and correspondingly, the first engaging structure 1414 is a slot. Although not explicitly shown in the drawings, the top of the secondary filter device 143 sealingly abuts against the middle of the body 11.

With continued reference to fig. 1 and 3, the rear portion of the third stage filter device 144 is plugged into the rear portion of the main body 11, and the second snap fit structure 1441 under the third stage filter device 144 is snapped into the second snap fit structure 115 under the main body 11. As mentioned above, the second engaging structure 115 is a hook, and correspondingly, the second engaging structure 1441 is a slot.

As shown in fig. 9 to 11, the dust box 141 is provided with a first dust collecting chamber 1411, a second dust collecting chamber 1412, a third dust collecting chamber 1413, a first engaging structure 1414 and a filtering hole 1415. The first dust collecting chamber 1411 serves as a main dust collecting chamber of the dust box 141, and is used for accommodating large-volume garbage (such as paper scraps, hair, pericarp, etc.); the second dust collection chamber 1412 and the third dust collection chamber 1413 serve as sub dust collection chambers of the dust box 141 for receiving garbage (e.g., dust) having a small volume.

As shown in fig. 9 and 10, the front of the dust box 141 is a U-shaped structure that surrounds a portion of the first dust collecting chamber 1411. A first dust discharge port 14111, which is a dust discharge port of the first dust collection chamber 1411, is formed at a front end of the dust box 141. It will be appreciated by those skilled in the art that the top of the U-shaped structure may also be part of the first discharge port 14111 during dumping of the refuse.

As shown in fig. 9 to 11, both the second dust collecting chamber 1412 and the third dust collecting chamber 1413 are provided outside the first dust collecting chamber 1411. Specifically, the second dust collection chamber 1412 and the third dust collection chamber 1413 are both disposed on the U-shaped structure of the dust box 141. The front end of the dust box 141 is formed with a second dust discharge port 14121 of the second dust collection chamber 1412 and a third dust discharge port 14131 of the third dust collection chamber 1413. It is apparent from fig. 9 and 10 that the second ash discharge opening 14121 and the third ash discharge opening 14131 are both located below the first ash discharge opening 14111, and the caliber of the second ash discharge opening 14121 and the third ash discharge opening 14131 is smaller than the caliber of the first ash discharge opening 14111. It can be understood by those skilled in the art that the smaller size of the second and third dust discharge openings 14121 and 14131 can inhibit the dust in the second and third dust collection chambers 1412 and 1413 from spreading when being dumped, preventing the dust from sticking to the user.

As can be seen from fig. 3 and 10, the end surface of the front end of the dust box 141 is an inclined surface, which is referred to herein as a first inclined surface; accordingly, the rear side of the front portion of the main body 11 is also provided with a slope, herein referred to as a second slope. The first inclined plane is matched with the second inclined plane, so that when the dust box 141 rotates to the position connected with the main body 1 shown in fig. 1, the second inclined plane can simultaneously close the first ash discharge port 14111, the second ash discharge port 14121 and the third ash discharge port 14131, and the phenomenon that the dust box 141 is easily abraded with the main body 11 when the dust box 141 is repeatedly opened and closed is avoided while the first ash discharge port 14111, the second ash discharge port 14121 and the third ash discharge port 14131 are ensured to be closed.

It can be understood by those skilled in the art that the first, second and third dust discharge ports 14111, 14121, 14131 are provided at the front end of the dust box 141, and the dust box 141 is opened in a manner of being turned backward and downward, so that the first, second and third dust discharge ports 14111, 14121, 14131 are far away from the handle 12 as far as possible, thus far away from the user, and further the problem of contamination of the user's clothes by the garbage in the dust box 141 when it is dumped out is avoided.

With continued reference to fig. 9-11, a plurality of filter apertures 1415 are provided in the U-shaped configuration of the dirt box 141 and at the bottom of the first dirt collection chamber 1411, the plurality of filter apertures 1415 being provided on the front side of the primary filter arrangement 142 as can be readily seen. The plurality of filtering holes 1415 communicate the first dust collecting chamber 1411 with the second dust collecting chamber 1412 so that a portion of dust in the first dust collecting chamber 1411 can be introduced into the second dust collecting chamber 1412 through the plurality of filtering holes 1415.

Although not explicitly shown in the drawings, each of the filter holes 1415 is provided as a tapered hole with a large opening facing the first dust collecting chamber 1411, and axes of the plurality of filter holes 1415 are parallel to each other. Further, the axis of each filter hole 1415 is parallel to the up-down direction of the dust box 141.

As shown in fig. 11, a through hole 1431 communicating with the third dust collecting chamber 1413 is provided on a sidewall of the secondary filter device 143. The cyclone structure of the secondary filter 143 enables the dust to spirally advance against the sidewall of the secondary filter 143 by its own centrifugal force, and the dust enters the third dust collecting chamber 143 by its own centrifugal force when moving to the through hole 1431.

Returning to fig. 3, with continued reference, it can be readily seen from fig. 3 that a portion of the structure of the housing of the tertiary filter assembly 144 can be inserted into the cyclonic separating structure of the secondary filter assembly 143. Specifically, the front end of the casing of the third-stage filtering device 144 is provided with a conical structure, and the conical structure can be inserted into the cyclone separation structure of the second-stage filtering device 143, so that an annular space can be formed between the conical structure and the cyclone separation structure, and thus air can spirally move in the annular space, and the effect of the spiral movement of the air is enhanced.

As shown in fig. 12 and 13, the cover case 16 is fixedly connected to an end of the battery 15 remote from the main body 11. Wherein, one end of the battery 15 inserted into the battery mounting cavity 121 is provided with a boss 151, and one end of the boss 151 away from the cover case 16 is provided with a power jack 152 as a terminal. The side of the boss 151 corresponding to the side plate of the L-shaped restricting rib 125 of the handle 12 without the first restricting groove 1251 is provided with an inclined surface so as to prevent interference between the boss 151 and the L-shaped restricting rib 125. A side surface of the boss 151 is provided with a stopper rib 153 that can be inserted into the first stopper groove 1251. The battery 15 is provided with a guide groove 154 as a guide structure on a side wall thereof, and the guide groove 154 is adapted to the guide rib 126 of the handle 12. In order to enable the guide ribs 126 to be smoothly inserted into the guide grooves 154, as shown in fig. 12 and 13, the cross-section of the guide grooves 154 is gradually increased toward the insertion of the battery 15 into the battery mounting cavity 121.

With continued reference to fig. 12 and 13, a cantilever 161 is disposed on each side of the cover 16, and a gap is formed between the cantilever 161 and the battery 15. The end of the cantilever 161 close to the boss 151 is provided with a buckle 162, and the end of the cantilever 161 far from the boss 151 is provided with a pressing structure 163. Wherein the catch 162 can snap together with a catch groove 123 inside the handle 12 and thereby secure the battery 15 and the cover shell 16 to the handle 12. The pressing structure 163 can be pressed to make the cantilever 161 close to the battery 15, so that the latch 162 is released from the slot 123, and the battery 15 and the cover 16 can be detached from the handle 12.

As shown in fig. 1 and 2, the cleaning head assembly 30 includes a link 31 and a roll brush (not shown), wherein the cleaning head assembly 30 is detachably connected to the extension pole 20 or the hand-held cleaner 10 through the link 31, and gathers the garbage on the floor by the roll brush. Although not shown, the connecting rod 31 is provided with a locking groove to be matched with a buckle on the extension rod 20 or the handheld vacuum cleaner 10, so as to realize fixation.

Based on the foregoing description, it will be appreciated by those skilled in the art that in the preferred embodiment of the present disclosure, the handheld cleaner 10 can be continuously operated by providing the battery 15 in a detachable form so that the handheld cleaner 10 can be replaced with a battery at any time; by configuring the dirt tray assembly 14 with a three-stage filtering device, bulky trash can be filtered by the primary filtering device 142 and received into the first dirt collection chamber 1411; by arranging a plurality of filter holes 1415 in the first dust collection chamber 1411 and the second dust collection chamber 1412, the air inlet channel 112 on the main body 11 is arranged to form a spiral airflow entering the first dust collection chamber 1411, so that the dust in the first dust collection chamber 1411 can spirally advance along the side wall of the first dust collection chamber 1411 and can enter the second dust collection chamber 1412 when moving to the plurality of filter holes 1415; dust in the airflow can be thrown into the third dust collecting chamber 1413 by the cyclonic separating structure of the secondary filter arrangement 143; the residual dust in the air flow can be filtered by the third filtering device 144, thereby ensuring the cleanness of the fan 13. All set up the front side at dirt box 141 through the three row's ash mouth with three dust collecting chamber to make the front end of dirt box 141 can be opened, when having avoided empting rubbish, the dust is rais up and adheres to the problem on the user's body.

As shown in fig. 1, 14 and 15, the extension pole 20 mainly includes a pole body 21, a power receiving terminal 22, a first electric connection terminal 23, a second electric connection terminal 24, an electric wire (not shown), a limit structure 25 and a protective case (not shown).

As shown in fig. 1 and 2, the stick body 21 can be detachably coupled with the hand-held cleaner 10 by a first end thereof, and the stick body 21 can be detachably coupled with the cleaning head assembly 30 by a second end thereof. Although not shown, a first end of the lever 21 is provided with a locking groove (or a catch groove) adapted to the locking hook 117 of the hand-held cleaner 10, and a second end of the lever 21 is provided with a catch adapted to the catch groove of the cleaning head assembly 30.

As shown in fig. 14 and 15, the power receiving terminal 22 is disposed on a side wall of the rod body 21 and can communicate with an external power source, and preferably, the power receiving terminal 22 is disposed adjacent to the second end of the extension rod 20, and the power receiving terminal 22 is a contact type electrode plate. A first electrical connection terminal 23 is provided on a first end of the extension pole 20 and is electrically connectable with the hand-held cleaner 10, a second electrical connection terminal 24 is provided on a second end of the extension pole 20 and is electrically connectable with the cleaning head assembly 30, and electrical wires are provided on the pole body 21 for electrically connecting the power receiving terminal 22 with the first electrical connection terminal 23 and for electrically connecting the first electrical connection terminal 23 with the second electrical connection terminal 24. As will be appreciated by those skilled in the art, the power receiving terminal 22 may be electrically connected to the first electrical connection terminal 23 by one set of wires and to the second electrical connection terminal 24 by another set of wires; the power receiving terminal 22 may be electrically connected to the first electrical connection terminal 23 through a set of wires, and then the first electrical connection terminal 23 and the second electrical connection terminal 24 may be electrically connected together through a set of wires. Further, the protective shell is fixedly connected with the rod body 21 and can hide the electric wire, so that the electric wire can be protected.

As shown in fig. 14 and 15, the position-limiting structure 25 is fixedly connected to or integrally formed with the rod body 21 and includes a T-shaped position-limiting protrusion 251 and a baffle 252, and the extension rod 20 is fixed to the charging stand 40 by inserting the T-shaped position-limiting protrusion 251 into a T-shaped position-limiting groove 423 (shown in fig. 17) of the charging stand 40. The T-shaped limiting protrusion 251 includes a longitudinal portion (not labeled) and a transverse portion (not labeled), one end of the longitudinal portion away from the transverse portion is connected to the rod body 21, and the baffle 252 is disposed on one side of the T-shaped limiting protrusion 251 near the first end of the extension rod 20. As can be seen from the figure, the power receiving terminal 22 includes two power receiving terminals, namely a positive power receiving terminal and a negative power receiving terminal, and a longitudinal portion of the T-shaped limiting protrusion 251 is located between the positive power receiving terminal and the negative power receiving terminal, so that the T-shaped limiting protrusion 251 can protect the power receiving terminal 22 from being damaged by an external force on the premise that the power receiving terminal 22 is ensured to be abutted to the charging terminal 422 on the charging stand 40.

As shown in fig. 16 to 18, the charging stand 40 includes a base 41 for supporting the cleaning head assembly 30 and a post 42 for limiting the extension pole 20. Wherein, the upright post 42 is arranged on the central axis of the base 41 and is positioned at the rear side of the base 41, and is detachably connected with the base 41. In addition, the person skilled in the art can also arrange the upright post 42 at other positions on the base 41, for example, at the middle position of the base 41; one skilled in the art can also make the base 41 integral with the post 42 as desired.

As shown in fig. 16 and 18, the front edge of the base 41 is provided with a front stopper 411 protruding upward of the base 41, the left edge of the base 41 is provided with a left stopper 412 protruding upward of the base 41, and the right edge of the base 41 is provided with a right stopper 413 protruding upward of the base 41. The front stopping structures 411, the left stopping structures 412 and the right stopping structures 413 are used for limiting the forward movement, the left movement and the right movement of the cleaning head assembly 30 on the base 41 respectively, protecting the cleaning head assembly 30 and preventing foreign objects from colliding with and damaging the cleaning head assembly 30.

As shown in fig. 16 to 18, the post 42 is provided with a fixing member 421, a charging terminal 422, a T-shaped stopper groove 423 as a stopper structure, a tapered groove 424, a groove 425, a socket 426, and a battery charging chamber 427. Wherein the fixing member 421 is provided at the top of the pillar 42 and extends forward of the pillar 42. A charging terminal 422, a T-shaped stopper groove 423, and a tapered groove 424 are provided on the fixing member 421. Specifically, the charging terminal 422 is provided on the front side of the fixing member 421, and is provided as an electrode sheet of a contact type. The T-shaped limit groove 423 is provided on the fixing member 421 in the vertical direction, and the T-shaped limit groove 423 has a top opening so that the limit structure 25 (specifically, the T-shaped limit projection 251) on the extension rod 20 can be inserted into the T-shaped limit groove 423 through the top opening, and in a state where the limit structure 25 is inserted into the T-shaped limit groove 423, the baffle 252 of the limit structure 25 abuts against the top end of the fixing member 421 to ensure that the power receiving terminal 22 on the extension rod 20 abuts against the charging terminal 422 on the column 42. The T-shaped restraint groove 423 also has a front opening that is clearance fit with a longitudinal portion of the T-shaped restraint projection 251. The bottom of the tapered groove 424 is communicated with the top of the T-shaped limiting groove 423, and the tapered groove 424 is used for guiding the T-shaped limiting projection 251 on the extension rod 20 to be inserted into the T-shaped limiting groove 423.

As shown in fig. 18, a groove 425 is formed at the rear side of the bottom of the pillar 42 and is recessed toward the front side of the pillar 42. A socket 426 is provided on the front side wall of the recess 425, the socket 426 being for direct or indirect connection to an external power source (in particular alternating current). It will be appreciated by those skilled in the art that the outlet 426 may also be configured as a plug or cord, provided that an external power source can be connected.

As shown in fig. 16 to 18, the battery charging chamber 427 can receive the battery 15 detached from the hand-held cleaner 10 and can charge the battery 15. The battery charging chamber 427 is disposed at the rear side of the fixing member 421, and the opening of the battery charging chamber 427 is directed upward. Although not shown in the drawings, the charging stand 40 may further include a cover case for closing the battery charging chamber 427 (when the battery 15 is not provided therein), which has the same structure as the cover case 16 shown in fig. 12 and 13 except that the cover case for closing the battery charging chamber 427 is not fixedly coupled to the battery 15.

As shown in fig. 18, the battery charging chamber 427 is provided therein with a second power supply pin 4271, an arc boss 4272, a slide rod 4273 as a buffer member, and a stopper boss 4274. Wherein the second power supply pin 4271 is provided on the bottom wall of the battery charging chamber 427, and the second power supply pin 4271 is inserted into the power supply insertion hole 152 of the battery 15 in a state where the battery 15 is inserted into the battery charging chamber 427. An arc boss 4272 is provided at the bottom of the battery charging chamber 427, and the slide rod 4273 is movably coupled with the arc boss 4272 in the up-down direction of the column 42. Although not shown in the drawings, a spring is provided between the slide rod 4273 and the arc boss 4272.

During insertion of the battery 15 into the battery charging cavity 427, the battery 15 first abuts against the top of the sliding rod 4273 and then gradually compresses the spring, slowing the insertion of the battery 15 into the battery charging cavity 427 until the second power plug 4271 is inserted into the power receptacle 152 of the battery 15.

It will be understood by those skilled in the art that the sliding rod 4273 may be replaced by any feasible buffering member, such as a silicone pad disposed on the top of the arc boss 4272, provided that it can buffer the battery 15.

As can be seen from fig. 12 and 13, the battery 15 is provided with a relief structure (not labeled) corresponding to the arc-shaped boss 4272, specifically, a circumferential space contracted by the boss 151 on the battery 15.

With continued reference to fig. 18, a limit protrusion 4274 is disposed on the bottom wall of the battery charging cavity 427 and is formed with a second limit groove 42741, and the second limit groove 42741 is adapted to the limit rib 153 of the battery 15 for guiding the second power plug 4271 to be inserted into the power jack 152 of the battery 15.

Based on the foregoing description, it can be understood by those skilled in the art that the arc-shaped boss 4272 and the limit protrusion 4274 together serve as a limit structure of the upright post 42, and are used for preventing the positive and negative poles of the second power pin 4271 and the positive and negative poles of the power jack 152 from being inserted reversely, and guiding the second power pin 4271 to be inserted into the power jack 152.

Although not shown in the drawings, the column 14 further includes a circuit board including an input connection terminal electrically connected to a power supply connection terminal (specifically, the socket 426 provided at the bottom of the column 14), a first output connection terminal electrically connected to the charging terminal 422, and a second output connection terminal electrically connected to the second power supply pin 4271. The circuit board is arranged such that the input connection terminals are simultaneously connected to the first output connection terminal and the second output connection terminal. The circuit board is also configured to selectively connect the input terminal to one of the first output terminal and the second output terminal. As an example, two electronic control switches are arranged on the circuit board, one of the two electronic control switches electrically connects the input connection terminal and the first output connection terminal together and can control the connection and disconnection between the connection terminal and the first output connection terminal; the other one of the two electric control switches electrically connects the input connecting terminal and the second output connecting terminal together and can control the on-off between the connecting terminal and the second output connecting terminal.

Further, the circuit board also includes an indicator light for indicating whether the battery in the battery charging chamber 427 is fully charged.

Based on the foregoing description, those skilled in the art will appreciate that in the preferred embodiment of the present disclosure, the charging stand 40 can be used not only to place the cleaning device, but also to charge the battery 15 mounted to the hand-held cleaner 10, and also to charge the battery 15 detached from the hand-held cleaner 10. Further, the charging dock 40 effectively reduces the footprint of the overall cleaning device by having the cleaning device stand upright.

So far, the technical solutions of the present disclosure have been described in connection with the foregoing embodiments, but it is easily understood by those skilled in the art that the scope of the present disclosure is not limited to only these specific embodiments. The technical solutions in the above embodiments can be split and combined, and equivalent changes or substitutions can be made on related technical features by those skilled in the art without departing from the technical principles of the present disclosure, and any changes, equivalents, improvements, and the like made within the technical concept and/or technical principles of the present disclosure will fall within the protection scope of the present disclosure.

Claims (10)

1. A hand-held cleaner is characterized in that the hand-held cleaner comprises a main body with a dust suction opening at the front end, a handle positioned at the rear side of the main body, a fan arranged at the rear part of the main body and a dust box assembly positioned between the fan and the dust suction opening,

the dust box component comprises a dust box and a primary filtering device,

the dust box is provided with at least one part of a first dust collection cavity, a second dust collection cavity positioned outside the first dust collection cavity and a plurality of filter holes for communicating the first dust collection cavity with the second dust collection cavity;

the primary filtering device is arranged at the air outlet end of the first dust collecting cavity.

2. The hand-held cleaner of claim 1, wherein the plurality of filter holes are provided at a bottom of the first dust collecting chamber; and/or the like and/or,

each filter hole is provided with a conical hole, and the large opening of each conical hole faces the first dust collection cavity; and/or the like and/or,

the axes of the filter holes are parallel to each other.

3. The hand-held cleaner according to claim 2, wherein an axis of each of the filter holes is parallel to an up-down direction of the dust box.

4. A hand-held cleaner according to claim 3, wherein the primary filter device is a conical filter screen and the axis of the filter screen is parallel to the axis of the first dirt collection chamber.

5. The hand-held cleaner of claim 1, wherein the dirt tray assembly further comprises a secondary filter device located downstream of the primary filter device on the axis of the first dirt collection chamber;

the dust box is also provided with a third dust collecting cavity which can receive the dust separated by the secondary filtering device.

6. The hand-held cleaner of claim 5, wherein the secondary filter device is a cyclonic separating structure having a sidewall with a through hole formed therein in communication with the third dirt collection chamber.

7. The hand-held cleaner of claim 6, wherein the dirt tray assembly further comprises a tertiary filtration device located downstream of the secondary filtration device and upstream of the fan on the axis of the first dirt collection chamber.

8. The hand-held cleaner of claim 7, wherein the tertiary filtration device comprises a housing and filter cotton and/or filter paper disposed inside the housing, a portion of the housing being insertable into the cyclonic separation structure; and/or the like and/or,

the housing is pivotally connected to the dirt box.

9. The hand-held cleaner of claim 8, wherein the portion of the structure of the housing is provided as a cone-shaped structure.

10. The hand-held cleaner according to any one of claims 1 to 9, wherein an air intake channel is further formed on the main body to communicate the dust suction port with the first dust collecting chamber, and the air intake channel is configured to allow the airflow entering the first dust collecting chamber to be spiral along the sidewall of the first dust collecting chamber; and/or the like and/or,

at least one part of the dust box is arranged to be a U-shaped structure, and the first dust collection cavity is formed between the U-shaped structure and the main body in the working state of the handheld dust collector.

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