CN205514361U - Hand -held vacuum cleaner - Google Patents

Abstract

The utility model discloses a hand -held vacuum cleaner, include: casing, dirt cup and motor, be formed with air intake, air outlet and the mouth of blowing on the casing, the mouth of blowing is neighbouring the air intake sets up, the dirt cup is established on the casing, the dirt cup with the air intake links to each other, the motor has a motor chamber, by the air current that air inlet goes into is flowed through the dirt cup with behind the motor, through switching mechanism changeablely from the air outlet with blow at least one outflow in the mouth. According to the utility model discloses a hand -held vacuum cleaner through setting up switching mechanism, makes air current at least one outflow from air outlet and the mouth of drying changeablely, can treat the clear surface and clean better, has improved clean effect.

Description

handheld vacuum cleaner

technical field

The utility model relates to the technical field of vacuum cleaners, in particular to a hand-held vacuum cleaner.

Background technique

In the related art, traditional vacuum cleaners are inconvenient, time-consuming and labor-intensive for cleaning narrow structures such as keyboards, and the cleaning effect is not good.

Utility model content

The utility model aims at at least solving one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a handheld vacuum cleaner, which has a good cleaning effect.

The hand-held vacuum cleaner according to the embodiment of the present utility model includes: a housing, on which an air inlet, an air outlet, and a blowing outlet are formed, and the blowing outlet is arranged adjacent to the air inlet; a dust cup, the dust cup Located on the housing, the dust cup is connected to the air inlet; and a motor, the motor has a motor cavity, and the airflow entering from the air inlet flows through the dust cup and the motor, and then passes through the dust cup and the motor. The switching mechanism can switchably flow out from at least one of the air outlet and the air outlet.

According to the hand-held vacuum cleaner of the embodiment of the utility model, by setting the switching mechanism, the airflow can switchably flow out from at least one of the air outlet and the air outlet, so that the surface to be cleaned can be better cleaned and the cleaning effect is improved.

According to an embodiment of the present utility model, the switching mechanism is configured to be movable between a conduction position for connecting the blowing port and the motor cavity and a blocking position for blocking the blowing port and the motor cavity .

Further, when the switching mechanism is in the conducting position, the switching mechanism closes or semi-blocks the air outlet, and when the switching mechanism is in the blocking position, the air outlet communicates with the motor cavity.

Specifically, the switching mechanism includes a push plate, the push plate is movably arranged on the housing, and a communication port is formed on the push plate, when the switching mechanism is in the conduction position, the The communication port communicates the blowing port with the motor cavity.

Further, the push plate is provided with a closing plate, and when the switching mechanism is in the conduction position, the closing plate closes or half closes the air outlet.

Specifically, when the closing plate half-closes the air outlet, there is a gap between the closing plate and the air outlet, or the closing plate closes a part of the air outlet.

Furthermore, the switching mechanism further includes: a reset member, the reset member is arranged between the motor and the closing plate, and the reset member always pushes the push plate in the direction toward the cut-off position .

Optionally, the reset member is a spring.

Optionally, the push plate extends along the front-rear direction.

Further, a push button is provided on the push plate.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic diagram of a handheld vacuum cleaner according to an embodiment of the present invention;

Fig. 2 is a partial schematic diagram of the handheld vacuum cleaner shown in Fig. 1, wherein the switching mechanism is located at the partition position;

Fig. 3 is another partial schematic diagram of the hand-held vacuum cleaner shown in Fig. 1, wherein the switching mechanism is located at the conduction position;

Fig. 4 is a perspective view of the dust cup shown in Fig. 1;

Fig. 5 is a longitudinal sectional view of the dust cup shown in Fig. 4;

Fig. 6 is a sectional view along line A-A in Fig. 5;

Fig. 7 is a sectional view along the line B-B in Fig. 5;

Fig. 8 is a schematic view of the front of the hand-held vacuum cleaner shown in Fig. 1, wherein the dust removal panel is in a closed position;

Figure 9 is a side view of the front of the handheld vacuum cleaner shown in Figure 8;

Fig. 10 is a sectional view along line C-C in Fig. 9;

Figure 11 is a bottom view of the front of the handheld vacuum cleaner shown in Figure 8;

Figure 12 is another schematic view of the front of the hand-held vacuum cleaner shown in Figure 8, with the dust dump panel in the open position;

Fig. 13 is a schematic diagram of the assembly of the front part of the hand-held vacuum cleaner and the floor brush according to the embodiment of the present invention.

Reference signs:

100: hand-held vacuum cleaner;

1: housing; 11: air inlet pipe; 111: air inlet;

12: blowing channel; 121: blowing port;

2: dust cup; 21: air intake pipe; 211: air intake channel; 2111: air intake; 2112: air outlet;

22: second cyclone; 221: air duct; 2211: air inlet; 2212: air outlet;

222: air-inducing gap; 223: opening; 224: connecting wall; 225: extension;

226: bleed air channel; 227: partition; 23: guide channel;

3: motor; 31: motor cavity; 311: air outlet;

4: switching mechanism; 41: push plate; 411: communication port;

42: closed plate; 421: positioning column; 43: spring; 44: push button;

5: gray board; 51: pivot shaft;

6: Button; 7: Buckle; 8: Elastic piece;

200: floor brush; 201: floor brush import; 202: floor brush outlet; 203: floor brush exit;

204: baffle; 205: bristles.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying No device or element must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

The following describes a handheld vacuum cleaner 100 according to an embodiment of the present invention with reference to FIGS. 1-13 . The handheld vacuum cleaner 100 may be a rechargeable or direct current vacuum cleaner, but is not limited thereto.

As shown in FIG. 1 , a handheld vacuum cleaner 100 according to an embodiment of the present invention includes a housing 1 , a dust cup 2 and a motor 3 .

An air inlet 111 and an air outlet 121 are formed on the casing 1 , and the air outlet 121 is disposed adjacent to the air inlet 111 . The dust cup 2 is arranged on the housing 1 , and the dust cup 2 is connected with the air inlet 111 . The motor 3 has a motor cavity 31 , the motor cavity 31 communicates with the dust cup 2 , and the airflow entered by the air inlet 111 flows through the dust cup 2 and the motor 3 and then flows out from the blower port 121 .

For example, referring to FIG. 1 and in conjunction with FIG. 8 and FIG. 10 , the air inlet 111 and the blowing outlet 121 are generally formed in a rectangular shape, and the air inlet 111 and the blowing outlet 121 are all located at the front end of the housing 1 (for example, the left end in FIG. 1 ), Moreover, the air inlet 111 and the air outlet 121 are spaced apart from each other. When the motor 3 is running, a negative pressure is generated in the motor cavity 31, so that the external dust-laden airflow such as dust-laden airflow can enter the dust cup 2 through the air inlet 111, and under the filtering effect of the dust cup 2, the dust in the airflow Dust and the like are separated and collected in the dust cup 2 , and the clean air is blown out through the motor chamber 31 through the air outlet 121 . Here, it should be noted that the direction “front” refers to the side of the handheld vacuum cleaner 100 away from the user, and the opposite direction is defined as “rear”, that is, the side of the handheld vacuum cleaner 100 held by the user.

Optionally, the air outlet 121 is located above the air inlet 111 , but not limited thereto.

Optionally, the cross-sectional area of the air outlet 121 is smaller than the cross-sectional area of the air inlet 111 . Thus, by setting the air outlet 121 with a relatively small size, the airflow blown from the air outlet 121 can flow to the surface to be cleaned at a certain flow rate, so that the dust on the surface to be cleaned can be effectively blown up. The air inlet 111 can suck the blown dust into the dust cup 2 as much as possible, which has better cleaning effect and high cleaning efficiency.

As shown in FIG. 1 , the dust cup 2 is located on the front side of the motor 3 . Of course, the dust cup 2 can also be located on the rear side of the motor 3 (not shown in the figure), and the motor 3 is located between the air inlet 111 and the dust cup 2 at this time, thereby increasing the structural diversity of the handheld vacuum cleaner 100 . It can be understood that the specific installation positions of the dust cup 2 and the motor 3 can be adaptively changed according to actual requirements, which is not specifically limited in the present invention.

When the hand-held vacuum cleaner 100 cleans a narrow structure such as a keyboard, the airflow blown from the air outlet 121 can enter the narrow gap on the keyboard and blow up the dust in the narrow gap, and the negative pressure in the motor chamber 31 Under the action of the blown dust etc. can be sucked into the casing 1 through the air inlet 111 and collected in the dust cup 2 . Thus, it greatly facilitates the cleaning of narrow structures such as keyboards, saves time and effort, and has a good cleaning effect.

According to the hand-held vacuum cleaner 100 of the embodiment of the present utility model, by setting the blowing port 121 and making the blowing port 121 adjacent to the air inlet 111, the cleaning of narrow gaps is greatly facilitated, and the cleaning effect is good.

According to an embodiment of the present invention, as shown in FIG. 1 , the air outlet 121 extends obliquely toward the air inlet 111 . At this time, the central axis of the air outlet 121 intersects with the central axis of the air inlet 111 , and the intersection point is located outside the housing 1 . Preferably, the intersection point is located on the surface to be cleaned (eg the surface where the dust on the keyboard is located). Thus, the air inlet 111 can better suck the dust blown up by the air outlet 121 into the dust cup 2, and the dust suction effect is good.

According to one embodiment of the present utility model, housing 1 is provided with air inlet pipe 11, for example, with reference to Fig. 1, air inlet pipe 11 extends horizontally, and one end (for example, the left end among Fig. free end) protrudes from the housing 1. The air inlet 111 is formed at the free end of the air inlet pipe 11 , and the air inlet 111 is located at the front side of the air outlet 121 at this time.

Optionally, the end face of the free end of the air inlet pipe 11 extends obliquely in a direction away from the blowing port 121 along the flow direction of the airflow passing through the air inlet pipe 11 . For example, as shown in FIG. 1 , the left end face of the air inlet pipe 11 extends obliquely downward from left to right. Thus, the airflow blown out from the air outlet 121 can be better blown to the surface to be cleaned, and it is not easy to return to the dust cup 2 directly through the air inlet 111 .

Furthermore, the end surface of the above-mentioned free end of the air inlet pipe 11 is formed as an inclined plane, thus, the processing is simple and the cost is low. Certainly, the end surface of the above-mentioned free end of the air inlet pipe 11 may also be formed as an oblique curved surface (not shown in the figure), for example, an oblique arc surface concave toward the center of the housing 1 or the like.

According to a specific embodiment of the present utility model, housing 1 is provided with blowing channel 12, and one end (for example, the right end among Fig. The left end in Fig. 1) has blowing port 121. Thus, the airflow in the motor cavity 31 can be delivered to the blowing port 121 through the blowing channel 12 .

For example, as shown in Figure 1, the blowing passage 12 is positioned at the top of the housing 1, the blowing passage 12 extends along the front-to-back direction, the rear end of the blowing passage 12 communicates with the motor chamber 31, and the blowing port 121 is formed at the front end of the blowing passage 12 and is located at Directly above the air inlet 111, the blowing channel 12 extends obliquely downward from the back to the front. At this time, along the airflow direction flowing through the blowing channel 12, the distance between the blowing channel 12 and the air inlet 111 gradually decreases. The airflow blown from the air outlet 121 can be blown to the surface to be cleaned opposite to the air inlet 111 , so that the dust blown from the surface to be cleaned can be sucked into the dust cup 2 through the air inlet 111 .

Optionally, the blowing channel 12 extends linearly along the front-to-back direction, as shown in FIG. Remove dust, etc. from the surface to be cleaned. Certainly, the blowing channel 12 may also extend along a front-to-back curve (for example, a wavy line or an arc, etc.).

Further, the blowing channel 12 is preferably gradually reduced along the flow direction and cross-sectional area of the airflow passing through it, as shown in Figure 8 and Figure 10, thus, when the airflow flows through the blowing port 121, the flow velocity is increased, so that the airflow It can flow to the surface to be cleaned at a high flow rate, so that the dust on the surface to be cleaned can be effectively blown up.

It can be understood that the specific location, shape, size, etc. of the blowing channel 12 can be specifically set according to actual requirements, so as to better meet actual requirements.

Optionally, the pipes of the handheld vacuum cleaner 100 are connected by ultrasonic welding. Wherein, "each pipeline" refers to each independent pipeline through which the airflow passes in the flow direction of the airflow. For example, the connection between the air inlet pipe 11 and the air inlet passage 211 of the first cyclone of the dust cup 2 is ultrasonic welding. Therefore, by adopting the ultrasonic welding method, the welding speed is fast, the welding strength is high, and the sealing performance is good.

According to an embodiment of the present invention, an air outlet 311 is formed on the casing 1 . For example, in the example of FIG. 1 , the air outlet 311 is located on the side of the motor 3 away from the air inlet 111 , and the air outlet 311 communicates with the motor cavity 31 , so that the dust-laden airflow that enters by the air inlet 111 is filtered through the dust cup 2 Afterwards, the clean air can pass through the motor cavity 31 and be discharged from the air outlet 311.

The airflow entering from the air inlet 111 flows through at least one of the air outlet 311 and the air outlet 121 after passing through the dust cup 2 and the motor 3 . That is to say, the airflow entering from the air inlet 111 can only flow out from the air outlet 311 , or only flow out from the air outlet 121 , or can also flow out from the air outlet 311 and the air outlet 121 at the same time. For example, after the airflow entering through the air inlet 111 flows through the dust cup 2 and the motor 3 , it can switchably flow out from at least one of the air outlet 311 and the blowing outlet 121 through the switching mechanism 4 .

For example, when the hand-held vacuum cleaner 100 is working normally (cleaning a place with a large space such as bed sheets, curtains, etc.), it is not necessary to blow up the dust on the surface to be cleaned through the air outlet 121. At this time, the air outlet 121 can be closed. Under the action of the negative pressure of the motor 3, the dust on the surface to be cleaned sucked by the air inlet 111 is filtered by the dust cup 2, and the dust and the like are collected in the dust cup 2, and the clean air can pass through the motor cavity 31 from the air outlet. 311 discharge.

When the hand-held vacuum cleaner 100 cleans a narrow structure such as a keyboard, the air outlet 121 can be communicated with the motor chamber 31, so that the airflow blown from the air outlet 121 can be blown to the narrow gaps of the keyboard, etc., and remove the dust, etc. there. Blowing, under the negative pressure of the motor 3, the blown dust can be sucked into the dust cup 2 through the air inlet 111, and the dust cup 2 filters the inhaled dust-laden airflow, and the filtered dust and the like are collected in the dust cup. In the cup 2, the clean air flow flows through the motor cavity 31 to the air outlet 121 to continue blowing the dust on the keyboard and the like. At this time, the air outlet 311 can be completely closed, and of course, the air outlet 311 can also be slightly opened, but it should be ensured that most of the airflow blows to the air outlet 121 .

According to an embodiment of the present invention, the blowing port 121 is connected to the motor cavity 31 in an on-off manner. When the air outlet 121 communicates with the motor cavity 31 , the air in the motor cavity 31 can flow to the air outlet 121 . When the air outlet 121 is cut off from the motor chamber 31 , the air in the motor chamber 31 cannot flow to the air outlet 121 .

For example, the air outlet 121 and the motor cavity 31 can be connected on and off through the switch mechanism 4, and the switch mechanism 4 is configured to be in the conduction position of the conduction air outlet 121 and the motor cavity 31 and to cut off the air outlet 121 and the motor cavity 31. Movable between partition positions. When the switching mechanism 4 is in the conduction position, the air outlet 121 communicates with the motor chamber 31, and clean air can be blown to the surface to be cleaned through the air outlet 121. At this time, the hand-held vacuum cleaner 100 can clean narrow structures such as keyboards. When the switching mechanism 4 is in the cut-off position, the air outlet 121 is isolated from the motor chamber 31 , and the airflow in the motor chamber 31 cannot be blown out through the air outlet 121 .

Further, when the switching mechanism 4 is in the conducting position, the switching mechanism 4 closes or semi-closes the air outlet 311 . The switching mechanism 4 closes the air outlet 311, that is, the switching mechanism 4 completely closes the air outlet 311, and the airflow in the motor chamber 31 cannot flow out through the air outlet 311; The air outlet 311 flows out. Here, it should be noted that "semi-closed" can be understood as a part of the air outlet 311 closed by the switching mechanism 4; or the distance between the switching mechanism 4 and at least part of the air outlet 311 is relatively short. Part of the airflow is blown out from the air outlet 121 , while only a small part of the airflow is blown out from the air outlet 311 . When the switching mechanism 4 is in the cut-off position, the air outlet 311 communicates with the motor cavity 31 , so that the surface to be cleaned can be continuously cleaned when the handheld vacuum cleaner 100 is working normally.

Specifically, as shown in Figures 1-3, the switching mechanism 4 includes a push plate 41, which is movably arranged on the casing 1, and a communication port 411 is formed on the push plate 41, when the switching mechanism 4 is located in the guide When in the open position, the communication port 411 communicates the blowing port 121 with the motor cavity 31 .

For example, referring to FIG. 1 in conjunction with FIGS. 2 and 3 , the push plate 41 may extend along the front-rear direction, for example, the push plate 41 may extend horizontally along the front-rear direction, so that the push plate 41 may move horizontally in the front-rear direction. The rear opening of the blowing channel 12 is opposite to the opening on the motor cavity 31 for communicating with the blowing channel 12. At this time, the push plate 41 is located between the rear opening of the blowing channel 12 and the above-mentioned opening of the motor cavity 31. When the hand-held vacuum cleaner 100 works normally, the switching mechanism 4 is located at the cut-off position, the connecting port 411 is staggered from the air outlet 121 and the motor chamber 31, and the push plate 41 closes the above-mentioned opening of the motor chamber 31, and the push plate 41 connects the air outlet 121 and the motor chamber. 31, so that the airflow in the motor cavity 31 can not be blown out through the blowing port 121 (as shown in FIG. 2 ). When it is necessary to clean the narrow structure of the keyboard and other places, the push plate 41 can be moved so that the opening of the communication port 411, the rear end opening of the blowing channel 12 and the above-mentioned opening of the motor cavity 31 are relatively up and down, so that the air flow in the motor cavity 31 can pass through. The communication port 411 enters the blowing channel 12 and blows out through the blowing port 121 .

The air outlet 311 is formed on the motor cavity 31 and located below the push plate 41 . As shown in Figure 2 and Figure 3, the push plate 41 is provided with a closing plate 42, the closing plate 42 extends vertically downward from the lower surface of the pushing plate 41, the closing plate 42 is opposite to the air outlet 311, when the switching mechanism 4 is located in the guide When in the open position, the closing plate 42 closes or semi-closes the air outlet 311. Further, when the closing plate 42 half-closes the air outlet 311 , there is a gap between the closing plate 42 and the air outlet 311 , or the closing plate 42 closes a part of the air outlet 311 . Therefore, while ensuring the blowing effect, the manufacturing precision of the closing plate 42 is reduced, and the cost is saved. Optionally, the closure plate 42 is configured such that its thickness gradually increases from bottom to top, which effectively ensures the structural strength of the closure plate 42 .

Further, the switching mechanism 4 further includes: a reset member 43, which is arranged between the casing 1 and the push plate 41, and the reset member 43 always pushes the push plate 41 in a direction toward the partition position. Optionally, the reset member 43 is a spring. For example, as shown in Fig. 2 and Fig. 3, the spring is arranged between the motor 3 and the closing plate 42 and is positioned at the front side of the closing plate 42, and the spring always pushes the closing plate 42 backward, so that the pushing plate 41 is always kept in the position of the blower. Port 121 and the partition position of motor chamber 31. That is, the handheld vacuum cleaner 100 is always in a normal working state.

In order to make the push plate 41 move smoothly in the front-rear direction, positioning posts 421 can be respectively provided on the motor 3 and the closing plate 42 , and the two ends of the spring can be respectively sleeved on the corresponding positioning posts 421 . Optionally, the free end of the positioning post 421 is shaped like a truncated cone, a cone, or a hemisphere to facilitate the installation of the spring.

As shown in FIGS. 1-3 , a push button 44 is provided on the push plate 41 . Thus, the user can realize the movement of the push plate 41 between the conducting position and the blocking position by pushing the push button 44 . Optionally, the push button 44 is a hollow structure to save material and reduce cost.

The hand-held vacuum cleaner 100 is in the cut-off position shown in FIG. 2 under normal conditions. At this time, the push plate 41 separates the air outlet 121 from the motor chamber 31, and the closing plate 42 opens the air outlet 311. The push plate 41 acts on the elastic force of the spring. down to hold it in this position. When it is necessary to clean the narrow structure of the keyboard and other places, the push button 44 can be moved forward to move the push plate 41 forward. The channel 12 is connected, and the closing plate 42 moves forward to have a certain gap with the air outlet 311, so that most of the airflow in the motor cavity 31 can be blown out by the air outlet 121 through the blowing channel 12, so that the narrow gap can be cleaned well , while a small part of the airflow flows out from the air outlet 311 through the gap between the air outlet 311 and the closing plate 42 , as shown in FIG. 3 .

Therefore, by setting the switching mechanism 4 , the airflow discharged from the air outlet 311 can be effectively utilized while ensuring the normal use of the handheld vacuum cleaner 100 , and the cleaning effect of the handheld vacuum cleaner 100 is further enhanced.

According to an embodiment of the present utility model, as shown in Fig. 4-Fig. 7, the dust cup 2 includes: a cup body, a first cyclone, a cyclone assembly and a filter, and the first cyclone, the cyclone assembly and the filter are all located on Inside the cup, the first cyclone has an air inlet channel 211 , and the air inlet channel 211 has an air inlet 2111 and an air outlet 2112 .

5-7, the cyclone assembly includes a plurality of second cyclones 22, and the plurality of second cyclones 22 are arranged in parallel along the circumference of the first cyclone, wherein a guide channel is defined between the two second cyclones 22 23. The guide channel 23 communicates with the air outlet 2112 and guides the airflow along the tangent line of the surrounding wall of the second cyclone 22 adjacent to it to the outer periphery of the cyclone assembly. The first cyclone separation space A for purification and separation, so that when the air flow to be cleaned enters from the air intake passage 211 and is tangentially guided into the first cyclone separation space A through the guide passage 23, the air flow can be initially separated, thereby Larger particles or dirt in the airflow are separated and dropped. Specifically, one end of the air intake channel 211 communicates with the air inlet 111, the other end of the air intake channel 211 communicates with one end of the guide channel 23, and the other end of the guide channel 23 communicates with the first cyclone separation space A, and the guide channel The airflow extracted from 23 enters the first cyclone separation space A along the tangential direction to realize purification and separation in the first cyclone separation space A.

As shown in Figure 6, each second cyclone 22 has an air-introduction gap 222 so that the airflow enters the second cyclone 22 along the tangential direction, and each second cyclone 22 is provided with an air guide pipe 221 to guide the air flow. The pipe 221 and the inner peripheral wall of the second cyclone 22 are spaced apart from each other, the air guide pipe 221 has an air guide inlet 2211 and an air guide outlet 2212, and the air guide inlet 2211 communicates with the air introduction gap 222, so that the airflow after the primary separation can be formed by The bleed air gap 222 enters into multiple second cyclones 22 , is further purified and separated in the second cyclone 22 and then discharged through the air guide pipe 221 . The filter element is arranged along the outer peripheral side of the cyclone assembly, so that the airflow on the periphery of the cyclone assembly can be tangentially entered into the second cyclone 22 through the filter element and the air-introduction gap 222 (limited in the second cyclone 22 is a second cyclone separation space B). That is, further purification and separation are carried out in the second cyclone separation space B. Thus, after the primary separation is carried out in the first cyclone separation space A, the primary purified airflow passes through the filter and enters a plurality of second cyclones 22 from the bleed air gap 222 to perform purification and separation again. The air flow in the separation space B rotates around the air guide pipe 221 , the separated dust falls down, and the purified air enters the air guide pipe 221 from the air guide inlet 2211 and exits the second cyclone 22 through the air guide outlet 2212 .

Since a plurality of second cyclones 22 are arranged in parallel around the longitudinal axis of the first cyclone, the primary purified airflow can be dispersed and enter into a plurality of second cyclones 22 in parallel, and among the plurality of second cyclones Cyclone separation is completed in the cyclone 22 respectively.

Further, an outlet filter is provided between the dust cup 2 and the motor 3 . As shown in FIG. 1 , the outlet filter is located at the outlet of the dust cup 2 , and the outlet filter is located downstream of the plurality of second cyclones 22 . Thus, the airflow that has been purified and separated again by the plurality of second cyclones 22 can be further purified through the outlet filter. Here, it should be noted that “downstream” can be understood as downstream in the flow direction of the airflow passing through the dust cup 2 .

Optionally, the filter element is a HEPA (High efficiency particulate air Filter, high-efficiency air filter) element or filter cotton.

Thus, by adopting the cyclone separation technology to purify and separate the dusty airflow entering the dust cup 2, the smooth flow of the airflow in the dust cup 2 can be effectively ensured. Moreover, by setting the first cyclone, filter and A plurality of second cyclones 22, using the first cyclone and a plurality of second cyclones 22 to perform secondary cyclone separation, the first cyclone and the filter element can first filter out the large particles or dirt in the airflow, and the multi- A second cyclone 22 can separate most of the small particles (such as dust particles) in the airflow after the primary purification, and finally a small part of fine dust can be filtered through the outlet filter, and the dust and gas separation effect is good.

The filter element cleans the airflow during the process from the first cyclone separation space A to the second cyclone separation space B. Wherein, the filter element is preferably detachably arranged on the outer peripheral side of the cyclone assembly, so that the filter element can be disassembled after a period of use for easy cleaning.

By arranging the air duct 221 in the second cyclone 22 , the residence time of the airflow in the second cyclone 22 is prolonged, so that the airflow to be cleaned entering the second cyclone 22 can be better cleaned.

Optionally, as shown in FIGS. 5 and 6 , the air duct 221 is arranged eccentrically relative to the second cyclone 22 . That is to say, the central axis of the air guiding pipe 221 deviates from the central axis of the second cyclone 22 , and the central axis of the air guiding pipe 221 and the central axis of the second cyclone 22 do not coincide. That is, the distance between the outer peripheral wall of the air guide pipe 221 and a part of the inner peripheral wall of the second cyclone 22 is close or far, so that the airflow after the primary separation can first enter the air guide pipe 221 tangentially through the air-inducing gap 222 The outer peripheral wall of the second cyclone 22 and the side farther away from the inner peripheral wall of the second cyclone 22, and then rotate around the air guide pipe 221 to the closer side, which can effectively ensure that the airflow entering the second cyclone 22 along the Rotate in the same direction (for example, counterclockwise in FIG. 6 ) for purification and separation.

For example, as shown in Figure 5 and Figure 6, the air guide pipe 221 is a round pipe, and the air guide pipe 221 extends vertically, and the air guide pipe 221 is located on the top of the second cyclone 22, and the upper end of the air guide pipe 221 is connected to the second cyclone 22. The top walls of the two cyclones 22 are connected and have an air guiding outlet 2212 , and a lower end has an air guiding inlet 2211 . The bleed air gap 222 is located on the upper part of the second cyclone 22 . The airflow entering the second cyclone 22 begins to rotate around the upper end of the air guide pipe 221 and gradually moves downward (as shown in Figure 5 ), forming a rotating downdraft. It becomes an updraft, and the dust in the airflow breaks away from the airflow and falls downwards, while the cleaner airflow enters the air guide pipe 221 and is discharged from the air guide outlet 2212 at the upper end of the air guide pipe 221 .

Further, as shown in FIG. 6 , a partition 227 is provided inside the air guide pipe 221 , and the partition 227 divides the inside of the air guide pipe 221 into two chambers. Thus, by providing the partition plate 227, the dust and the like in the airflow entering the air guide duct 221 can be further separated. Optionally, the partition 227 is vertically or obliquely arranged in the air duct 221 .

The direction of rotation of the airflow at the periphery of the cyclone assembly is preferably the same as the direction of rotation within the second cyclone 22 . As shown in FIG. 6 , the rotation direction of the airflow on the outer circumference of the cyclone assembly and the subsequent rotation direction in the second cyclone 22 after entering the second cyclone 22 are both counterclockwise. Thus, the air flow in the dust cup 2 can be prevented from being disturbed, and the dust cup 2 can be guaranteed to have a better separation effect.

Referring to FIG. 6 , the filter element is arranged around the cyclone assembly, and an escape opening is formed on the filter element, and the escape opening is opposite to the guide channel 23 . Thus, the airflow flowing through the guide channel 23 can directly flow to the outer periphery of the cyclone assembly through the avoidance port, and before flowing into the second cyclone 22, it needs to first pass through the filter element, thereby ensuring the air flow while ensuring the filtering effect smoothness. For example, the filter element may be generally "C" shaped.

Certainly, there may be a plurality of filter elements, and the plurality of filter elements are set corresponding to the air-inducing gaps 222 of the plurality of second cyclones 22 . Each filter element is arranged relative to one or more air-introduction gaps 222, so that the airflow after preliminary purification in the first cyclone separation space A passes through the filter element and enters the second cyclone directly through the air-induction gap 222 tangentially. 22, so that large particles are filtered before being separated again in the second cyclone 22, which further improves the purification and separation effect.

Optionally, the above-mentioned filter element may be a filter net (not shown in the figure). Of course, the filter element can also be an insert with filter holes. The meshes or filter holes of the filter screen can be distributed in multi-layer circular rings, or evenly distributed in the form of multiple rows and columns, so as to filter evenly. In addition, the size range of the mesh or filter holes of the filter screen is not limited. If the size is relatively small, the filtering effect will be good; if the size is slightly larger, the exhaust efficiency will be high, and the energy loss of the motor 3 will be small. Need to choose the appropriate size.

As shown in FIG. 6 , one side of the air-introduction gap 222 of each second cyclone 22 is connected with a connecting wall 224 tangent to the side wall of the second cyclone 22 , and the other side extends outwards from an extension 225 , A tangential air-introduction channel 226 is defined between the extension portion 225 and the connecting wall 224 . Optionally, the connecting walls 224 on the plurality of second cyclones 22 are extended and tangentially connected to the side walls of the second cyclones 22 adjacent to them, wherein the extensions 225 are along the air flow passing through the air-inducing channel 226 The air flow direction extends towards the direction of the corresponding connecting wall 224. At this time, the air-introduction channel 226 is configured to gradually decrease along the flow direction and width of the air flow passing through the air-induction channel 226. As a result, the airflow around the cyclone assembly can enter the second cyclone 22 more smoothly along the tangential direction of the second cyclone 22 through the air-inducing channel 226 for cyclone separation, and the separation effect is better.

As shown in FIG. 5 and FIG. 7 , the inner wall of one end of the air intake channel 211 having the air outlet 2112 has a guide surface suitable for guiding the airflow in the air intake channel 211 to the guide channel 23 . Thus, the airflow flowing through the intake passage 211 can be better directed to the guide passage 23 under the action of the guide surface. For example, with reference to Fig. 5 and Fig. 7, the intake passage 211 is defined by the intake pipe 21, the air inlet 2111 and the air outlet 2112 of the intake passage 211 are respectively defined by the lower end and the upper end of the intake pipe 21, and the intake pipe 21 includes each other. Connected horizontal pipe section and vertical pipe section, the free end (for example, the left end among Fig. 5) of horizontal pipe section is communicated with air inlet 111, and the free end (for example, upper end among Fig. 5) of vertical pipe section is communicated with guide channel 23, The guide surface is located on the top wall of the free end of the vertical pipe section, and the air flow can be better guided into the guide channel 23 under the action of the guide surface when flowing through the place. For example, the guide surface is preferably formed as an arcuate surface.

Optionally, as shown in FIG. 6 , the guide channel 23 is configured such that its width gradually increases along the flow direction of the airflow. Thus, the airflow flowing through the guide channel 23 can be better directed to the outer periphery of the cyclone assembly under the guidance of the guide channel 23 .

Optionally, the bottom of each second cyclone 22 has an opening 223, and the small particles separated by the second cyclone 22 can fall below the second cyclone 22 through the opening 223 at the bottom of the second cyclone 22, The collection of small particles and the like is facilitated, and when the airflow is cyclone-separated in the second cyclone 22, the separated small particles and the like will not be raised.

Wherein, the components in the dust cup 2 can be connected by ultrasonic welding.

Therefore, by adopting the above-mentioned dust cup 2, the dust-air separation function of the dust cup 2 is strengthened, so that most of the dust is thrown away from the air flow before flowing to the outlet filter, and only a small amount of dust enters the outlet filter, so the outlet can be effectively prevented. The filter element is blocked by a large amount of dust, which reduces the cleaning cycle of the outlet filter element, increases the service life of the outlet filter element, and reduces the burden on the motor 3 at the same time.

According to one embodiment of the present utility model, the bottom of the first cyclone separation space A is opened to form an opening, and the bottom of each second cyclone 22 has the above-mentioned opening 223, and the bottom of the dust cup 2 is formed with a dust outlet. The mouth is jointly formed by the opening at the bottom of the first cyclone separation space A and the opening 223 at the bottom of the second cyclone 22 .

As shown in Figures 8-12, the hand-held vacuum cleaner 100 further includes: an ash dumping plate 5, which is arranged at the bottom of the housing 1, and the ash dumping plate 5 is configured to be in the open position and closed position of the dust outlet. The dust outlet is movable between closed positions. When the gray plate 5 is in the open position, the dirt and dust in the dust cup 2 can be discharged through the dust outlet (as shown in Figures 8 and 9); 5 Sealing the bottom of the dust cup 2 can ensure the normal operation of the dust cup 2 (as shown in Figure 12).

Thus, by setting the ash dumping plate 5, the dirt and dust in the dust cup 2 can be poured out conveniently, which greatly simplifies the ash dumping process.

Specifically, referring to FIGS. 8-12 , one end of the gray plate 5 is pivotably connected to the housing 1 so that the gray plate 5 can rotate between the open position and the closed position, and the gray plate 5 The other end is detachably engaged with the housing 1 . For example, the gray plate 5 extends along the front and rear direction, the rear end of the gray plate 5 can be pivotally connected to the housing 1 through the pivot shaft 51 , and the front end of the gray plate 5 is detachably engaged with the housing 1 .

As shown in Figures 9 and 10, the above-mentioned other end of the gray plate 5 is detachably matched with the housing 1 through at least one matching mechanism, wherein the matching mechanism includes: a first fitting and a second fitting, the first fitting It is located at the above-mentioned other end of the gray plate 5, and the second matching part is arranged on the housing 1. When the gray plate 5 is in the open position, the first matching part is separated from the second matching part. When the gray plate 5 is in the closed position When the first fitting is matched with the second fitting. Optionally, the first matching part and the second matching part are buckles 7 that are engaged with each other.

When the above-mentioned two buckles 7 are engaged with each other, the ash emptying plate 5 remains in the closed position, so that the hand-held vacuum cleaner 100 can work normally, and the dust cup 2 can purify and separate the airflow to be cleaned entering through the air inlet 111, and Separated dirt, dust, etc. are collected at the bottom of the dust cup 2. After the hand-held vacuum cleaner 100 is finished working, the two buckles 7 can be disengaged, so that the ash dump plate 5 can rotate from the closed position to the open position, and the dirt and dust collected in the dust cup 2 can be directly discharged through the dust outlet. out of case 1.

Further, as shown in Fig. 8-Fig. 12, the handheld vacuum cleaner 100 further includes: a button 6, the button 6 is arranged on the housing 1, wherein the second matching part is arranged on the button 6, when the button 6 is pressed, the second fitting The part moves away from the first matching part to separate from the first matching part. For example, with reference to Figure 10, the inner surface of the button 6 (i.e. the surface adjacent to the center of the housing 1) is provided with an extension plate extending horizontally toward the center of the housing 1, and the second fitting such as a buckle 7 is arranged on the extension plate. free end. In the process of pressing the button 6, the second matching part moves toward the direction of the center of the housing 1 and finally separates from the first matching part, so that the front end of the ash dump plate 5 can rotate downward under its own gravity to open the outlet. Dust mouth.

As shown in FIG. 10 , an elastic member 8 is provided between the button 6 and the dust cup 2 , and the elastic member 8 is configured to push the button 6 in a direction away from the center of the housing 1 . Optionally, the elastic member 8 is a spring. Thus, when the gray plate 5 is in the closed position, under the elastic force of the elastic member 8 such as a spring, the first matching part and the second matching part can always be engaged, so that the gray plate 5 remains in the closed position.

Optionally, there are two matching mechanisms, and the two matching mechanisms are left-right symmetrical. Thus, the reliability of the connection of the ash dumping board 5 can be effectively guaranteed.

Further, a sealing member is provided between the ash dumping board 5 and the dust outlet to seal the gap between the ash dumping board 5 and the dust outlet. Therefore, by providing the sealing member, the sealing performance at the dust outlet can be further ensured.

According to an embodiment of the present invention, as shown in FIG. 13 , the above-mentioned handheld vacuum cleaner 100 can be used in conjunction with a floor brush 200 such as a pet brush. In the following description of the present application, the ground brush 200 is taken as an example for illustration. Of course, those skilled in the art can understand that the floor brush 200 can also be other types of floor brushes 200, not limited to pet brushes.

Specifically, the floor brush 200, such as a pet brush, is formed with a floor brush inlet 201, a floor brush outlet 203, and a floor brush mouth 202. The air inlet 111 of the vacuum cleaner 100 is connected, and the ground brush opening 202 is located on the side of the ground brush 200 away from the housing 1 . Flow to the air inlet 111. In other words, the airflow blown out by the blower port 121 can pass through the ground brush inlet 201 and the ground brush mouth 202 to first flow to the hair of pets such as cats and dogs to blow up the hair and dust falling from the hair and skin, and then The ground brush port 202 passes through the ground brush port 203 and enters into the handheld vacuum cleaner 100 through the air inlet 111 . Optionally, the ground brush 200 is detachably connected to the casing 1 .

Therefore, by using the floor brush 200 such as a pet brush in conjunction with the above-mentioned handheld vacuum cleaner 100, the surface to be cleaned such as pet hair and skin can be better cleaned, and the cleaning effect is good.

The floor brush 200 is provided with an air inlet channel, and a ground brush inlet 201 is formed at the free end of the air inlet channel, wherein the air inlet channel gradually decreases in cross-sectional area along the flow direction of the airflow. Thus, the airflow can flow towards the surface to be cleaned at a certain flow rate, so that the dust etc. on the surface to be cleaned can be better blown up.

As shown in Figures 1 and 13, the free end (for example, the left end among Figures 1 and 13) of the air inlet pipe 11 is formed with an air inlet 111, and the air inlet pipe 11 extends out of the housing 1, and the air inlet pipe 11 The free end is plugged with the ground brush outlet 203. Therefore, by adopting the plug-in method, the installation is convenient and the assembly efficiency is high.

Referring to FIG. 13 , a baffle 204 is provided on one side of the ground brush opening 202 located at the air outlet 121 . Therefore, by setting the baffle plate 204, the baffle plate 204 has a certain guiding effect on the airflow blown from the air outlet 121, so that the airflow blown from the air outlet 121 can better blow up the dust on the surface to be cleaned.

Further, bristles 205 are provided on the part of the ground brush opening 202 except one side of the air outlet 121 . Thus, by providing the bristles 205, the pet's hair can be combed when cleaning the surface to be cleaned, such as the pet's hair and skin.

According to the handheld vacuum cleaner 100 of the embodiment of the present invention, the cleaning effect of the surface to be cleaned is better.

Other configurations and operations of the handheld vacuum cleaner 100 according to the embodiment of the present utility model are known to those skilled in the art, and will not be described in detail here.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation Specific features, structures, materials or characteristics described in an embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications, the scope of the present invention is defined by the claims and their equivalents.

Claims (10)

1. A hand-held vacuum cleaner, characterized in that, comprising: A casing, the casing is formed with an air inlet, an air outlet, and a blowing outlet, and the blowing outlet is arranged adjacent to the air inlet; a dust cup, the dust cup is arranged on the housing, and the dust cup is connected to the air inlet; and A motor, the motor has a motor chamber, the airflow entering from the air inlet passes through the dust cup and the motor, and then flows out from at least one of the air outlet and the blowing outlet in a switchable manner through a switching mechanism. 2. The hand-held vacuum cleaner according to claim 1, characterized in that, the switching mechanism is configured to connect the air outlet and the motor chamber to the conduction position and block the air outlet and the motor. The cavity is movable between partitioned positions. 3. The hand-held vacuum cleaner according to claim 2, characterized in that, when the switching mechanism is in the conduction position, the switching mechanism closes or semi-closes the air outlet, and when the switching mechanism is in the In the cut-off position, the air outlet communicates with the motor chamber. 4. The handheld vacuum cleaner according to claim 3, wherein the switching mechanism comprises a push plate, the push plate is movably arranged on the housing, and a communication port is formed on the push plate, When the switching mechanism is at the conduction position, the communication port communicates the blowing port with the motor chamber. 5. The handheld vacuum cleaner according to claim 4, wherein a closing plate is provided on the push plate, and when the switching mechanism is in the conduction position, the closing plate closes or semi-closes the outlet. tuyere. 6. The handheld vacuum cleaner according to claim 5, wherein when the closing plate half-closes the air outlet, there is a gap between the closing plate and the air outlet, or the closing plate closes part of the air outlet. 7. The handheld vacuum cleaner according to claim 5, wherein the switching mechanism further comprises: A reset member, the reset member is arranged between the motor and the closing plate, and the reset member always pushes the push plate in a direction toward the partition position. 8. The hand-held vacuum cleaner according to claim 7, wherein the reset member is a spring. 9. The hand-held vacuum cleaner according to any one of claims 4-8, wherein the push plate extends along the front-rear direction. 10. The handheld vacuum cleaner according to claim 4, wherein a push button is provided on the push plate.