Handheld dust collector

Abstract

The utility model provides a handheld dust collector, which relates to the technical field of cleaning equipment and comprises an exhaust component, a dust collection component and a dust collection component. The top end of the air guide pipe is connected with the bottom end face of the air exhaust channel, the air guide pipe is communicated with the interior of the air exhaust channel, and the bottom end of the air guide pipe extends downwards to the interior of the handle; the assembling pipe is located in the handle, the top end of the assembling pipe abuts against the bottom end of the air guide pipe, and the assembling pipe is communicated with the interior of the air guide pipe; the power supply assembly comprises a shell and a power supply part located in the shell, an air inlet area is formed in the shell, the bottom end of the assembly pipe is connected with the shell, and the interior of the assembly pipe communicates with the air inlet area. According to the utility model, the length of the air guide channel can be shortened, so that the airflow can be quickly guided into the power supply assembly, thereby reducing the heat generated by the power supply part in the power supply assembly in a working state.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a handheld vacuum cleaner. Background Art

[0002] With the development of society and the continuous improvement of people's living standards, vacuum cleaners have been used in more and more households as a cleaning appliance.

[0003] Existing vacuum cleaners mainly include components such as a suction pipe, a shell, a dust cup, a filter assembly, a motor assembly, a handle, and a power supply assembly. When in use, the motor assembly generates a negative pressure airflow, and the dirt on the ground enters the dust cup with the negative pressure airflow, thereby separating the dirt from the airflow through the filter assembly, and the filtered airflow is eventually guided to the outside of the vacuum cleaner through the exhaust area on the shell. However, the inventors have found that after a handheld vacuum cleaner has been used for a long time, the battery continues to heat up, causing heat accumulation on the surface of the shell, and even scalding the hands, giving the user a bad user experience. In addition, long-term internal heat accumulation can easily reduce the service life of the vacuum cleaner.

[0004] In order to solve the above problems, a utility model patent with the publication (announcement) number CN209404614U discloses a shell air duct structure and a handheld vacuum cleaner, which includes: a battery accommodating area, a transition area, and an air guide area. Among them, the air guide area faces the air guide member equipped in the shell; the transition area is connected to the air guide area and the battery accommodating area respectively; the battery accommodating area is used to load batteries, and after the battery accommodating area is loaded with batteries, it has a channel for air guide connected to the transition area. The technical solution of the above patent enables the area in the shell where the battery is loaded to dissipate heat quickly without affecting the user experience.

[0005] However, in the technical solution of the above patent, since the air outlet of the motor is close to the end of the shell, a part of the airflow is required to be guided to the air guide area located in front of the motor through an air guide member, which will inevitably increase the length of the air guide area. In addition, since the air guide channel is located below the battery, the transition area is connected to the air guide channel, which further increases the length of the air duct, which will inevitably have a certain impact on the transmission of the airflow. Utility Model Content

[0006] In view of the shortcomings existing in the above problems, the utility model provides a handheld vacuum cleaner, which can shorten the length of the air guide channel so that the airflow can be quickly guided to the inside of the power supply component.

[0007] To achieve the above object, the utility model provides a handheld vacuum cleaner, comprising:

[0008] An exhaust assembly having an exhaust passage;

[0009] An air guide tube, the top end of which is connected to the bottom end surface of the exhaust passage and communicates with the interior of the exhaust passage, wherein the bottom end of the air guide tube extends downward to the interior of the handle;

[0010] An assembly tube, located inside the handle, with a top end abutting against a bottom end of the air guide tube and communicating with the inside of the air guide tube;

[0011] The power supply component comprises a shell, wherein an air inlet area and an air outlet area are opened on the shell, the bottom end of the assembly tube is connected to the shell, and the interior of the assembly tube is communicated with the air inlet area.

[0012] In one of the embodiments, the bottom end of the air guide tube extends downward in a vertical direction to the inside of the handle.

[0013] In one embodiment, the assembly tube is part of the axis of the handle, and an assembly hole is opened on the top end of the assembly tube, and a lower through hole is opened at the bottom end of the assembly tube, wherein the end of the air guide tube is placed in the assembly hole, and the lower through hole is connected to the air inlet area.

[0014] In one of the embodiments, a lower air guide hole is opened on the bottom end surface of the exhaust passage, wherein the exhaust passage is connected with the interior of the air guide pipe through the lower air guide hole.

[0015] In one of the embodiments, an exhaust area is provided on the exhaust channel, wherein the exhaust area includes a top exhaust area, a left exhaust area and a right exhaust area which are respectively arranged on the top end surface, the left wall surface and the right wall surface of the exhaust channel.

[0016] In one of the embodiments, it also includes an exhaust filter assembly mounted on the outside of the exhaust area, the exhaust filter assembly includes a filter element and a frame, wherein the filter element is connected to the frame and is arranged on the outside of the top exhaust area, the left exhaust area and the right exhaust area through the frame.

[0017] In one of the embodiments, the exhaust assembly further includes a motor cover connected to the exhaust passage, wherein the motor cover is located at the front end of the exhaust passage and covers the outside of the motor assembly.

[0018] Compared with the prior art, the utility model has one of the following advantages:

[0019] The airflow is guided to the inside of the power supply assembly through the inside of the handle. Compared with the prior art, the length of the air guide channel can be shortened, so that the airflow can be quickly guided to the inside of the power supply assembly, thereby reducing the heat generated by the power supply part of the power supply assembly in the working state;

[0020] Since the assembly tube is located inside the handle, the strength of the handle can be increased;

[0021] Since the air guide pipe is in contact with the assembly pipe, the supporting performance of the exhaust assembly can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional diagram of this embodiment;

[0023] Figure 2 for Figure 1 A cross-sectional view of

[0024] Figure 3 for Figure 1 Partial cross-sectional view from another angle.

[0025] Figure 4 for Figure 1 A perspective view of the middle exhaust assembly;

[0026] Figure 5 for Figure 4 A cross-sectional view of

[0027] Figure 6 for Figure 4 A cross-sectional view from another perspective;

[0028] Figure 7 for Figure 4 Exploded diagram of

[0029] Figure 8 for Figure 4 A three-dimensional diagram of the middle exhaust hood;

[0030] Fig. 9 for Figure 4 Exploded view of the exhaust filter assembly;

[0031] The main reference numerals are as follows:

[0032] 1-exhaust cover; 100-motor cover; 1001-annular portion; 1002-first upper cover; 1003-annular outer edge; 1004-first through hole; 120-exhaust channel; 1201-first lower shell; 1202-second upper cover; 1203-top exhaust area; 1204-left exhaust area; 1205-right exhaust area; 1206-first upper end plate; 1207-second upper end plate; 1208-first lower side plate; 1209-second lower side plate; 1210-air duct; 1211-filter assembly area; 1212-second through hole; 1213-lower air duct;

[0033] 2-exhaust filter assembly; 200-filter element; 201-frame; 2010-first card slot; 2011-second card slot; 202-buffer pad;

[0034] 3-suction pipe; 4-shell; 400-first exhaust area; 401-second exhaust area; 402-first exhaust filter; 403-second exhaust filter; 404-first area; 4040-second wall; 405-second area; 4050-second wall; 5-dust cup; 6-filter assembly; 7-handle; 700-assembly tube; 701-assembly hole; 702-lower through hole; 8-power supply assembly; 800-air inlet area; 801-power supply unit; 802-shell; 9-air guide plate; 10-motor assembly. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0036] The utility model provides a handheld vacuum cleaner, comprising:

[0037] An exhaust assembly having an exhaust passage;

[0038] An air guide tube, the top end of which is connected to the bottom end surface of the exhaust passage and communicates with the interior of the exhaust passage, wherein the bottom end of the air guide tube extends downward to the interior of the handle;

[0039] The assembly tube is located inside the handle, the top end of which abuts against the bottom end of the air guide tube and is communicated with the inside of the air guide tube;

[0040] The power supply component comprises a shell, wherein an air inlet area and an air outlet area are opened on the shell, the bottom end of the assembly tube is connected to the shell, and the interior of the assembly tube is communicated with the air inlet area.

[0041] In the utility model, the airflow is guided to the interior of the power supply assembly through the interior of the handle. Compared with the prior art, the length of the air guide channel can be shortened so that the airflow can be quickly guided to the interior of the power supply assembly, thereby reducing the heat generated by the power supply part of the power supply assembly when in working state.

[0042] like Figures 1 to 9 As shown, this embodiment provides a handheld vacuum cleaner, which mainly includes a suction pipe 3, a shell 4, a dust cup 5, a filter assembly 6, a handle 7, a power supply assembly 8 and a motor assembly 10, wherein an exhaust assembly is fixed inside the shell 4.

[0043] In this embodiment, the exhaust assembly mainly includes an exhaust cover 1 and an exhaust filter assembly 2. The exhaust cover 1 includes a motor cover 100 and an exhaust passage 120 connected to each other, the motor cover 100 is located at the front end of the exhaust passage 120, and the motor cover 100 is covered on the outside of the motor assembly 10. Along the transmission direction of the airflow, the airflow exhausted from the motor assembly 10 enters the exhaust passage 120 through the motor cover 100.

[0044] In this embodiment, the motor cover 100 is surrounded by an annular outer edge 1003, and a plurality of first through holes 1004 are distributed on the annular outer edge 1003. The motor cover 100 can be connected to the air guide plate 9 through the plurality of first through holes 1004 and screws, so as to be fixed above the air guide plate 9.

[0045] Specifically, the motor cover 100 is composed of an annular portion 1001 and a first upper cover 1002 buckled thereon, an annular outer edge 1003 surrounds the outer side of the annular portion 1001, and the bottom end surface of the annular outer edge 1003 is in the same plane as the bottom end surface of the annular portion 1001. A first assembly structure and a second assembly structure that match each other are respectively provided on the top end surface of the annular portion 1001 and the bottom end surface of the first upper cover 1002.

[0046] Exemplarily, the first assembly structure and the second assembly structure may adopt matching protrusions and grooves.

[0047] Furthermore, the annular portion 1001 and the annular outer edge 1003 are an integrated structure.

[0048] In this embodiment, an exhaust area is provided on the exhaust channel 120 , wherein the exhaust area is close to the end of the exhaust channel 120 .

[0049] Specifically, the exhaust area includes a top exhaust area 1203 , a left exhaust area 1204 and a right exhaust area 1205 which are respectively arranged on the top end surface, the left wall surface and the right wall surface of the exhaust channel 120 .

[0050] Among them, the exhaust direction of the top exhaust area 1203 is toward the top of the exhaust channel 120 , the exhaust direction of the left exhaust area 1204 is toward the left side of the exhaust channel 120 , and the exhaust direction of the right exhaust area 1205 is toward the right side of the exhaust channel 120 .

[0051] The present application does not impose any specific restrictions on the shape, number and size of the holes in the top exhaust area 1203, the left exhaust area 1204 and the right exhaust area 1205. However, by way of example, the holes in the top exhaust area 1203 are circular holes, the number of which is several, and the holes in the left exhaust area 1204 and the right exhaust area 1205 are both bar holes, the number of which is four.

[0052] In the above embodiment, a first limiting portion and a second limiting portion are provided on the exhaust passage 120 , wherein the area between the first limiting portion and the second limiting portion forms a filter assembly area 1211 .

[0053] Specifically, along the transmission direction of the airflow, the first limiting portion is located upstream of the exhaust area, and the second limiting portion is located downstream of the exhaust area.

[0054] Since the outer end surface of the first limiting portion and the outer end surface of the second limiting portion both extend to the outside of the exhaust area, the filter assembly area 1211 forms a concave structure.

[0055] In this embodiment, the exhaust passage 120 is composed of a first lower shell 1201 and a second upper cover 1202 buckled thereon.

[0056] Further, the top exhaust area 1203 is located on the top end surface of the second upper cover 1202, the left exhaust area 1204 is located on the left wall surface of the first lower shell 1201, and the right exhaust area 1205 is located on the right wall surface of the first lower shell 1201. The position of the left exhaust area 1204 corresponds to the position of the right exhaust area 1205, and the airflow in the exhaust channel 120 is transmitted to the outside of the exhaust channel 120 via the top exhaust area 1203, the left exhaust area 1204 and the right exhaust area 1205 respectively.

[0057] Furthermore, the first limiting portion includes a first upper end plate 1206 and a first lower side plate 1208, and the second limiting portion includes a second upper end plate 1207 and a second lower side plate 1209. The first upper end plate 1206 and the second upper end plate 1207 are respectively mounted at both ends of the top exhaust area 1203. The first upper end plate 1206 is located upstream of the top exhaust area 1203, and the second upper end plate 1207 is located downstream of the top exhaust area 1203.

[0058] Furthermore, the top end surface and two side wall surfaces of the first upper end plate 1206 and the top end surface and two side wall surfaces of the second upper end plate 1207 all extend to the outside of the second upper cover 1202, so that the area between the first upper end plate 1206 and the second upper end plate 1207 forms a first assembly area in the filter element assembly area 1211.

[0059] Specifically, the first lower side plate 1208 and the second lower side plate 1209 are respectively located on the left and right sides of the first lower shell 1201. The first lower side plate 1208 surrounds the outer side of the left exhaust area 1204, and the second lower side plate 1209 surrounds the outer side of the right exhaust area 1205. The first lower side plate 1208 forms the second assembly area in the filter assembly area 1211, and the second lower side plate 1209 forms the third assembly area in the filter assembly area 1211.

[0060] Furthermore, the first lower side plate 1208 is composed of a first transverse plate, a first front longitudinal plate connected to the front end of the first transverse plate, and a first rear longitudinal plate connected to the rear end of the first transverse plate. The first front longitudinal plate is located upstream of the left exhaust area 1204, the first rear longitudinal plate is located downstream of the left exhaust area 1204, and the first transverse plate is located below the left exhaust area 1204.

[0061] The second lower side plate 1209 is composed of a second transverse plate, a second front longitudinal plate connected to the front end of the second transverse plate, and a second rear longitudinal plate connected to the rear end of the second transverse plate. The second front longitudinal plate is located upstream of the right exhaust area 1205, the second rear longitudinal plate is located downstream of the right exhaust area 1205, and the second transverse plate is located below the right exhaust area 1205.

[0062] When the second upper cover 1202 is buckled on top of the first lower shell 1201, the bottom end surface of the first upper end plate 1206 abuts against the top end surface of the first front longitudinal plate and the top end surface of the second front longitudinal plate respectively, and the bottom end surface of the second upper end plate 1207 abuts against the top end surface of the first rear longitudinal plate and the top end surface of the second rear longitudinal plate respectively, thereby forming a concave filter assembly area 1211.

[0063] In the above embodiment, an air guide duct 1210 is provided on the bottom end surface of the air exhaust passage 120 , wherein the interior of the air guide duct 1210 is communicated with the interior of the air exhaust passage 120 .

[0064] Specifically, a lower air guide hole 1213 is provided on the bottom end surface of the first lower shell 1201, and the other end of the lower air guide hole 1213 is connected to the top end surface of the air guide pipe 1210. Since the interior of the air guide pipe 1210 is a hollow structure, a portion of the airflow entering the exhaust channel 120 can be introduced into the interior of the air guide pipe 1210 through the lower air guide hole 1213.

[0065] Among them, an assembly portion is provided on the bottom end surface of the air guide tube 1210, so that the air guide tube 1210 can be connected to the assembly tube 700 and the air flow inside it is guided into the assembly tube 700.

[0066] Exemplarily, the assembly portion may be a protrusion or a groove formed on the bottom end surface of the air guide duct 1210 .

[0067] Furthermore, the bottom end of the air guide tube 1210 extends downward in a vertical direction to the inside of the handle 7 , thereby being connected to the top of the assembly tube 700 .

[0068] In addition, a second through hole 1212 is provided at the bottom of the first lower shell 1201 .

[0069] In this embodiment, the exhaust cover 1 can be fixed inside the vacuum cleaner by means of screws, the first through hole 1004 , the second through hole 1212 and the air guide pipe 1210 .

[0070] In this embodiment, the exhaust filter assembly 2 is installed outside the exhaust area.

[0071] Specifically, the exhaust filter assembly 2 is placed in the filter assembly area 1211, and includes a filter 200 and a frame 201. The filter 200 is connected to the frame 201, and the filter 200 is arranged outside the top exhaust area 1203, the left exhaust area 1204, and the right exhaust area 1205 through the frame 201, and is also located downstream of the top exhaust area 1203, the left exhaust area 1204, and the right exhaust area 1205. When the airflow enters the filter 200 through the top exhaust area 1203, the left exhaust area 1204, and the right exhaust area 1205, the fine particles contained in the airflow can be filtered out by the filter 200.

[0072] Optionally, the filter element 200 may be made of filter materials well known to those skilled in the art, such as filter HEPA and filter cotton.

[0073] Preferably, the filter element 200 is preferably a filter hepa. Compared with filter cotton, the filter hepa can block the dust particles in the airflow on the surface of the filter hepa, which is convenient for cleaning the dust particles.

[0074] Specifically, the frame 201 is shaped like a saddle, which makes it easy to install it in the filter assembly area 1211.

[0075] Furthermore, a first slot 2010 is formed on the first wall surface of the frame 201 and faces the inside of the frame 201, and a second slot 2011 is formed on the second wall surface of the frame 201 and faces the outside of the frame 201. The ends of the filter element 200 are placed in the first slot 2010, so that the shape of the filter element 200 is also similar to a saddle shape, and is thus mounted on the outside of the top exhaust area 1203, the left exhaust area 1204, and the right exhaust area 1205.

[0076] In the above embodiment, the exhaust filter assembly 2 further includes a buffer pad 202 connected to the frame 201 .

[0077] Specifically, the inner end surface of the buffer pad 202 is placed in the second slot 2011, and the outer end surface of the buffer pad 202 is located outside the second slot 2011, so that the shape of the buffer pad 202 is also similar to a saddle shape. When the exhaust filter assembly 2 is mounted on the outside of the exhaust channel 120, the outer end surface of the buffer pad 202 is in contact with the first limiting portion and the second limiting portion.

[0078] When the exhaust filter assembly 2 is installed inside the filter assembly area 1211, the buffer pad 202 forms gaps between the filter 200 and the top exhaust area 1203, the left exhaust area 1204 and the right exhaust area 1205. This design utilizes the circulation of airflow.

[0079] Furthermore, the frame 201 has a certain elasticity, which facilitates the installation of the exhaust filter assembly 2 inside the filter assembly area 1211, and at the same time, the exhaust filter assembly 2 is clamped on the outside of the exhaust area.

[0080] In addition, in this embodiment, the first upper cover 1002 and the second upper cover 1202 are connected to form the upper cover of the exhaust hood 1, and the annular portion 1001 and the first lower shell 1201 are connected to form the lower shell of the exhaust hood 1. The upper cover is buckled on the top of the lower shell to form the exhaust hood 1. Among them, a first positioning sleeve is provided on the left and right side walls of the second upper cover 1202, and two fixing screw holes are also provided on the second upper cover 1202. In order to cooperate with the first positioning sleeve and the fixing screw holes, a second positioning sleeve is provided on the left and right side walls of the first lower shell 1201, and two matching nuts are also provided on the first lower shell 1201.

[0081] In this embodiment, the power supply component 8 includes a shell 802 , wherein an air inlet area 800 and an air outlet area are opened on the shell 802 , the bottom end surface of the assembly tube 700 is connected to the shell 802 , and the interior of the assembly tube 700 is connected to the air inlet area 800 .

[0082] In this embodiment, an assembly tube 700 is provided inside the handle 7, and the assembly tube 700 is a part of the axis of the handle 7. An assembly hole 701 is provided on the top end surface of the assembly tube 700, and a lower through hole 702 is provided on the bottom end surface of the assembly tube 700, wherein the bottom end of the assembly portion is embedded in the assembly hole 701, and the lower through hole 702 is butted against the air inlet area.

[0083] In the above embodiment, the end of the air duct 1210 is placed in the assembly hole 701, so that the interior of the air duct 1210 is connected to the interior of the assembly tube 700, and a part of the airflow in the exhaust channel 120 is guided to the interior of the power supply assembly 8 through the lower air duct hole 1213, the air duct 1210, the assembly tube 700 and the air inlet area 800 in sequence, thereby contacting the power supply part 801. Since the housing 802 is also provided with an air outlet area, after the airflow contacts the power supply part 801, it will take away the heat generated by the power supply part 801, and be guided to the outside of the housing 802 through the air outlet area, thereby completing the heat dissipation operation of the power supply part 801 and reducing the heat generated by the power supply part in the working state.

[0084] Exemplarily, the air outlet area is a plurality of holes formed on the housing 802 corresponding to the position of the air inlet area 800 .

[0085] In addition, since the air guide tube 1210 is in contact with the assembly tube 700 , the air guide tube 1210 forms a second fixing point of the exhaust passage 120 , so that it can be stably fixed inside the handheld vacuum cleaner.

[0086] In this embodiment, a corresponding first exhaust area 400 and a second exhaust area 401 are provided on the housing 4, the first exhaust area 400 is close to the left exhaust area 1204, and the second exhaust area 401 is close to the right exhaust area 1205. A first exhaust filter 402 is provided between the first exhaust area 400 and the left exhaust area 1204, and a second exhaust filter 403 is provided between the second exhaust area 401 and the right exhaust area 1205.

[0087] Further, the first exhaust filter 402 and the second exhaust filter 403 are respectively sandwiched in the first area 404 and the second area 405 provided on the housing 4. The first exhaust area 400 forms a first wall surface of the first area 404, the second wall surface 4040 of the first area 404 corresponds to the left exhaust area 1204, the second exhaust area 401 forms a first wall surface of the second area 405, and the second wall surface 4050 of the second area 405 corresponds to the right exhaust area 1205.

[0088] Preferably, the first exhaust filter 402 and the second exhaust filter 403 are both made of filter cotton.

[0089] In this embodiment, the airflow in the exhaust channel 120 is guided to the positions of the first exhaust area 400 and the second exhaust area 401 respectively through the top exhaust area 1203, the left exhaust area 1204, the right exhaust area 1205 and the filter element 200. Among them, since the orientation direction of the top exhaust area 1203 does not correspond to the position of the first exhaust area 400 or the position of the second exhaust area 401, when a part of the airflow in the exhaust channel 120 passes through the top exhaust area 1203 and the filter element 200 and is guided to the position above them, the airflow will contact the inner wall surface of the shell 4, thereby being guided to the position of the first exhaust area 400 and / or the second exhaust area 401, and finally guided to the outside of the vacuum cleaner. In addition, since the left exhaust area 1204 corresponds to the first exhaust area 400 and the right exhaust area 1205 corresponds to the second exhaust area 401, when a part of the airflow in the exhaust channel 120 is guided to the positions of the first exhaust area 400 and the second exhaust area 401 through the left exhaust area 1204 and the right exhaust area 1205 respectively, it can be directly guided to the outside of the vacuum cleaner.

[0090] In this embodiment, by adding a top exhaust area 1203 on the basis of the left exhaust area 1204 and the right exhaust area 1205, the airflow exhausted by the motor assembly can be quickly guided to the outside of the vacuum cleaner, which is beneficial to improving the exhaust efficiency of the vacuum cleaner.

[0091] The above is only a preferred embodiment of the utility model, which is only illustrative and not restrictive. Those skilled in the art understand that many changes, modifications, and even equivalences can be made within the spirit and scope defined by the claims of the utility model, but they will all fall within the scope of protection of the utility model.

Claims

1. A handheld vacuum cleaner, characterized in that: include: An exhaust assembly having an exhaust passage; An air guide tube, the top end of which is connected to the bottom end surface of the exhaust passage and communicates with the interior of the exhaust passage, wherein the bottom end of the air guide tube extends downward to the interior of the handle; An assembly tube, located inside the handle, with a top end abutting against a bottom end of the air guide tube and communicating with the inside of the air guide tube; The power supply component comprises a shell, wherein an air inlet area and an air outlet area are opened on the shell, the bottom end of the assembly tube is connected to the shell, and the interior of the assembly tube is communicated with the air inlet area.

2. The handheld vacuum cleaner according to claim 1, characterized in that: The bottom end of the air guide tube extends downwardly to the inside of the handle along a vertical direction.

3. The handheld vacuum cleaner according to claim 2, characterized in that: The assembly tube is a part of the axis of the handle, a assembly hole is provided on the top end of the assembly tube, and a lower through hole is provided at the bottom end of the assembly tube, wherein the end of the air guide tube is placed in the assembly hole, and the lower through hole is connected to the air inlet area.

4. The handheld vacuum cleaner according to claim 2, characterized in that: A lower air guide hole is provided on the bottom end surface of the exhaust passage, wherein the exhaust passage is communicated with the interior of the air guide pipe through the lower air guide hole.

5. The handheld vacuum cleaner according to claim 4, characterized in that: An exhaust area is provided on the exhaust passage, wherein the exhaust area includes a top exhaust area, a left exhaust area and a right exhaust area which are respectively arranged on the top end surface, the left wall surface and the right wall surface of the exhaust passage.

6. The handheld vacuum cleaner according to claim 5, characterized in that: It also includes an exhaust filter assembly mounted on the outside of the exhaust area, the exhaust filter assembly includes a filter element and a frame, wherein the filter element is connected to the frame and is arranged on the outside of the top exhaust area, the left exhaust area and the right exhaust area through the frame.

7. The handheld vacuum cleaner according to any one of claims 1 to 6, characterized in that: The exhaust assembly further comprises a motor cover body communicated with the exhaust passage, wherein the motor cover body is located at the front end of the exhaust passage and covers the outside of the motor assembly.

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