Rear end unit of vacuum cleaner and vacuum cleaner

Abstract

The present application discloses a rear end unit of a vacuum cleaner and a vacuum cleaner, belonging to the technical field of cleaning equipment, and solving the problems of excessively fast flow velocity and high noise when gas passes through an exhaust hole in the prior art. The rear end unit of the vacuum cleaner of the present application comprises an upper shell, a handle, a base and a motor assembly, wherein the handle is located between the upper shell and the base; a motor cavity for accommodating the motor assembly is provided in the upper shell, and the motor assembly is provided in the motor cavity; an exhaust duct is formed in the handle, an exhaust hole is provided in the base, and the motor cavity is connected to the exhaust hole through the exhaust duct. The rear end unit of the vacuum cleaner of the present application and the vacuum cleaner can be used to clean a work surface.

Description

Technical Field

[0001] The present application relates to a cleaning device, and more particularly to a rear end unit of a vacuum cleaner and a vacuum cleaner. Background Art

[0002] At present, in existing vacuum cleaners, since the exhaust hole is very close to the motor, the path of the gas exhausted by the motor is short, and the gas exhausted by the motor can be quickly discharged from the exhaust hole to the outside of the vacuum cleaner. However, this will cause the gas to flow too fast when passing through the exhaust hole, and the noise at the exhaust hole is very loud, affecting the user experience. Summary of the invention

[0003] In view of the above analysis, the present application aims to provide a rear end unit of a vacuum cleaner and a vacuum cleaner, which solve the problems of excessively fast flow rate and high noise when gas passes through the exhaust hole in the prior art.

[0004] The purpose of this application is mainly achieved through the following technical solutions:

[0005] The present application provides a rear end unit of a vacuum cleaner, including an upper shell, a handle, a base and a motor assembly, wherein the handle is located between the upper shell and the base; a motor cavity for accommodating the motor assembly is provided in the upper shell, and the motor assembly is arranged in the motor cavity; an exhaust duct is formed in the handle, an exhaust hole is provided in the base, and the motor cavity is connected to the exhaust hole through the exhaust duct.

[0006] In a possible design, the axis of the motor assembly is arranged along a horizontal direction.

[0007] In a possible design, the motor assembly includes a motor housing, a motor body disposed in the motor housing, and a shock absorbing assembly wrapping the motor body.

[0008] In one possible design, the motor housing includes an air inlet housing and an air outlet housing that is snap-fitted with the air inlet housing; the interior of the air inlet housing and the air outlet housing constitute a chamber that accommodates the motor body and the buffer assembly; the air inlet housing is provided with an air inlet, and the air outlet housing is provided with an air outlet.

[0009] In one possible design, the shock-absorbing assembly includes an air inlet end shock-absorbing component and an air outlet end shock-absorbing component; the air inlet end shock-absorbing component is arranged between the air inlet end shell and the motor body, and the air outlet end shock-absorbing component is arranged between the air outlet end shell and the motor body.

[0010] In a possible design, the motor assembly further includes an air inlet end support foot disposed at the bottom of the air inlet end shell and an air outlet end support foot disposed at the bottom of the air outlet end shell.

[0011] In a possible design, it also includes an auxiliary exhaust duct arranged between the air outlet of the motor housing and the upper housing, and an auxiliary exhaust hole arranged at the rear end of the upper housing.

[0012] In a possible design, it also includes a first air guide member disposed between the air outlet of the motor housing and the upper housing, and the gas exhausted from the air outlet is introduced into the exhaust duct through the first air guide member.

[0013] In a possible design, it also includes a second air guide member arranged below the first air guide member, the second air guide member is located on the windward surface of the connection between the exhaust duct and the auxiliary exhaust duct, and the air outlet direction of the second air guide member is directed to the auxiliary exhaust duct.

[0014] In a possible design, it also includes a button located on the top of the upper shell and a display for displaying the remaining power of the vacuum cleaner and the current speed gear.

[0015] In a possible design, the angle between the axis of the handle and the axis of the motor assembly and / or the axis of the vacuum cleaner suction pipe is 75° to 90°.

[0016] In a possible design, a handle stopper is provided on the handle; the handle stopper is used to abut against the top of the user's hand.

[0017] In a possible design, the distance between the handle baffle and the top of the handle is no more than 34 mm; and the height of the handle baffle relative to the handle surface is no less than 2 mm.

[0018] In a possible design, a static electricity eliminator is provided on the handle, and static electricity generated by the motor assembly and the handle is introduced to the outside through the static electricity eliminator.

[0019] In one possible design, a charging hole for supplying power to the motor assembly is provided on the handle.

[0020] In a possible design, a hanger mounting groove that cooperates with the vacuum cleaner hanger is provided on the base.

[0021] The present application also provides a vacuum cleaner, comprising the rear end unit of the vacuum cleaner described above.

[0022] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0023] a) In the rear end unit of the vacuum cleaner provided in the present application, the exhaust duct is arranged in the handle, and the exhaust port of the motor assembly in the motor cavity is connected with the exhaust hole on the base through the exhaust duct in the handle. Due to the long length of the handle, the airflow discharged from the motor assembly is affected by the flow resistance when flowing in the exhaust duct, and its flow velocity will gradually decrease. The longer the flow path and flow time, the greater the reduction, so that the flow velocity is reduced when the airflow flows through the exhaust hole, thereby achieving the noise reduction effect and improving the user experience.

[0024] b) In the rear end unit of the vacuum cleaner provided by the present application, a split-structured damping component is used, and the air inlet damping component and the air outlet damping component are respectively provided only at the air inlet and air outlet ends of the motor housing and the air inlet and air outlet ends of the motor body where the vibration is relatively strong, without wrapping the entire motor, so that on the basis of effectively damping the vibration of the motor body, the exposed heat dissipation area of ​​the motor body can be increased, thereby improving the heat dissipation performance of the motor body. In addition, since the split-structured damping component is used, the amount of consumables used in the damping component can be effectively reduced, thereby reducing the processing cost of the above-mentioned motor component and vacuum cleaner.

[0025] c) In the rear end unit of the vacuum cleaner provided by the present application, the exhaust channel is a dual-channel design, and the gas exhausted by the motor assembly is mainly discharged from the exhaust channel outside the vacuum cleaner, and the auxiliary exhaust channel can appropriately reduce the exhaust volume and airflow speed of the exhaust channel, thereby reducing the noise generated by the vacuum cleaner during its exhaust process. It should be noted that the exhaust channel provided in the handle is used as the exhaust channel. This is because the exhaust hole is provided at the bottom of the handle, downwardly arranged, far away from the user's nostrils, and the exhausted gas flows downward, so it can reduce the pollution of the gas near the user by the dust that is not completely filtered; at the same time, the gas flowing downward will produce an upward reaction force on the vacuum cleaner, so that the user's hand weight is reduced and it is convenient to hold. The exhaust channel provided between the air outlet of the motor housing and the upper housing is used as an auxiliary exhaust channel, which can appropriately share the airflow of the exhaust hole and reduce the vibration at the exhaust hole on the basis of avoiding the pollution of the gas near the user by the dust that is not completely filtered.

[0026] Other features and advantages of the present application will be described in the subsequent description, and some will become apparent from the description, or will be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are only for the purpose of illustrating specific embodiments and are not to be considered as limiting the present application. The same reference symbols denote the same components throughout the accompanying drawings.

[0028] Figure 1 A front view of the rear end unit of the vacuum cleaner provided in the first embodiment of the present application;

[0029] Figure 2 A three-dimensional diagram of the rear end unit of the vacuum cleaner provided in the first embodiment of the present application;

[0030] Figure 3 A three-dimensional view of the rear end unit of the vacuum cleaner provided in the first embodiment of the present application from another direction;

[0031] Figure 4 A cross-sectional view of the rear end unit of the vacuum cleaner provided in Embodiment 1 of the present application;

[0032] Figure 5 A three-dimensional diagram of a vacuum cleaner bracket in a vacuum cleaner provided in Embodiment 2 of the present application;

[0033] Figure 6 A three-dimensional view of the vacuum cleaner bracket in the vacuum cleaner provided in the second embodiment of the present application from another direction;

[0034] Figure 7 A front view of a vacuum cleaner front end unit provided in Embodiment 2 of the present application;

[0035] Figure 8 A partial view of the front end unit of the vacuum cleaner provided in the second embodiment of the present application;

[0036] Fig. 9 Another partial view of the front end unit of the vacuum cleaner provided in the second embodiment of the present application;

[0037] Fig.10 A schematic diagram of the structure of the outer shell in the front end unit of the vacuum cleaner provided in the second embodiment of the present application;

[0038] Fig.11 A schematic diagram of the structure of the inner shell in the front end unit of the vacuum cleaner provided in the second embodiment of the present application;

[0039] Fig.12 A schematic three-dimensional diagram showing the positions of the outer shell and the outer shell in the front end unit of the vacuum cleaner provided in the second embodiment of the present application;

[0040] Fig.13 A schematic top view showing the positions of the outer shell and the outer shell in the front end unit of the vacuum cleaner provided in the second embodiment of the present application;

[0041] Fig.14 A three-dimensional diagram of the cyclone filter assembly in the front end unit of the vacuum cleaner provided in Example 2 of the present application.

[0042] Reference numerals:

[0043] 1-air inlet end shock absorber; 2-air outlet end shock absorber; 3-motor body; 4-air inlet end shell; 5-air outlet end shell; 6-charging hole; 7-bracket assembly slot; 8-air inlet; 9-air outlet; 10-handle; 11-exhaust duct; 12-exhaust hole; 13-static elimination element; 14-auxiliary exhaust hole; 15-upper shell; 16-first air guide; 17-second air guide; 18-base; 19-button; 20-display; 21-handle baffle; 22-connecting part; 23-hanging part; 24-middle plate; 25-end plate; 26-baffle; 27-side plate; 28-positioning plate; 29-positioning slot; 30-through Wire trough; 31-reinforcement plate; 32-mounting hole; 33-suction port assembly; 34-secondary filter assembly; 35-power supply assembly; 36-dust cup; 37-filter screen; 38-filter frame; 39-cone; 40-bracket; 41-top edge of bracket; 42-assembly part; 43-dust shield tube body; 44-dust shield ring; 45-dust shield plate; 46-outer shell; 47-inner shell; 48-spiral ring; 49-body; 50-boss; 51-assembly ring; 52-assembly part; 53-air guide; AA-axis of motor assembly; BB-axis of suction pipe; CC-axis of handle; DD-axis of secondary filter assembly. DETAILED DESCRIPTION

[0044] The preferred embodiments of the present application are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present application to illustrate the principles of the present application.

[0045] Embodiment 1

[0046] This embodiment provides a rear end unit of a vacuum cleaner. Figures 1 to 4 , comprises an upper shell 15, a handle 10, a base 18 and a motor assembly, wherein the handle 10 is located between the upper shell 15 and the base 18, and the upper shell 15 is connected to the base 18 through the handle 10, that is, one end of the handle 10 is connected to the upper shell 15, and the other end of the handle 10 is connected to the base 18. Among them, a motor cavity for accommodating the motor assembly is provided in the upper shell 15, and the motor assembly is arranged in the motor cavity, an exhaust passage 11 is formed in the handle 10, and an exhaust hole 12 is provided in the base 18, and the motor cavity is connected to the exhaust hole through the exhaust passage 11, that is, one end of the exhaust passage 11 is connected to the motor cavity, and the other end of the exhaust passage 11 is connected to the exhaust hole, so that the gas discharged from the motor assembly can be discharged from the exhaust hole through the exhaust passage 11.

[0047] Compared with the prior art, in the rear end unit of the vacuum cleaner provided in this embodiment, the exhaust duct 11 is arranged in the handle 10, and the exhaust port of the motor assembly in the motor cavity is connected with the exhaust hole 12 on the base 18 through the exhaust duct 11 in the handle 10. Since the handle 10 is relatively long, the airflow discharged from the motor assembly is affected by the flow resistance when flowing in the exhaust duct 11, and its flow velocity will gradually decrease. The longer the flow path and flow time, the greater the reduction, so that the flow velocity is reduced when the airflow flows through the exhaust hole 12, thereby achieving the noise reduction effect and improving the user experience.

[0048] In order to facilitate the installation of the motor assembly, the axis AA of the motor assembly can be arranged in a horizontal direction, which can optimize the distribution of the overall force of the vacuum cleaner and improve the comfort of the user when holding the vacuum cleaner.

[0049] As for the structure of the motor assembly, specifically, it may include a motor housing and a motor body 3 and a shock absorbing assembly arranged in the motor housing. In order to facilitate the installation of the motor body 3 and the buffer assembly in the motor housing, the motor housing may also be a split structure. Specifically, the motor housing may include an air inlet housing 4 and an air outlet housing 5 that is engaged with the air inlet housing 4. The interior of the air inlet housing 4 and the air outlet housing 5 constitutes a chamber for accommodating the motor body 3 and the buffer assembly. The air inlet housing 4 is provided with an air inlet 8, and the air outlet housing 5 is provided with an air outlet 9. The air inlet 8, the chamber and the air outlet 9 constitute an air flow channel, and the air outlet 9 corresponds to the exhaust duct 11. In this way, when installing or replacing the motor body 3 and / or the buffer assembly, the air inlet housing 4 and the air outlet housing 5 can be separated, and then the motor body 3 and / or the buffer assembly can be installed or replaced, which is simple and convenient to operate.

[0050] In order to improve the installation stability of the above-mentioned motor assembly, it can also include an air inlet end support foot arranged at the bottom of the air inlet end shell 4 and an air outlet end support foot arranged at the bottom of the air outlet end shell 5, and the air inlet end support foot and the air outlet end support foot extend in the direction of the handle 10, and the motor assembly can be set up as a whole in the motor cavity through the air inlet end support foot and the air outlet end support foot.

[0051] Considering that the main parts of the motor generating vibration and noise are at the two ends, the above-mentioned damping assembly is a split structure, including an air inlet end damping component 1 and an air outlet end damping component 2. Among them, the air inlet end damping component 1 is arranged between the air inlet end shell 4 and the air inlet end of the motor body 3, the air inlet end damping component 1 is sleeved on the outer wall of the air inlet end of the motor body 3, and the air inlet surface and side surface of the air inlet end damping component 1 are respectively in contact with the inner wall of the motor shell, and the air outlet end damping component 2 is arranged between the air outlet end shell 5 and the air outlet end of the motor body 3, the air outlet end damping component 2 is sleeved on the outer wall of the air outlet end of the motor body 3, and the air outlet end of the motor body 3 is clamped in the groove of the air outlet end damping component, and the air inlet surface and side surface of the air outlet end damping component 2 are respectively in contact with the inner wall of the motor shell, so that the motor body 3 is mounted between the air inlet end damping component 1 and the air outlet end damping component 2. In this way, the split-structured shock-absorbing component is only provided with the air inlet end shock-absorbing component 1 and the air outlet end shock-absorbing component 2 at the air inlet end and the air outlet end of the motor housing and the air inlet end and the air outlet end of the motor body 3, respectively, without wrapping the entire motor, thereby increasing the exposed heat dissipation area of ​​the motor body 3 on the basis of effectively shock-absorbing the motor body 3, thereby improving the heat dissipation performance of the motor body 3. In addition, since the split-structured shock-absorbing component is adopted, the amount of consumables used in the shock-absorbing component can be effectively reduced, thereby reducing the increase in processing costs of the above-mentioned motor component and vacuum cleaner.

[0052] It should be noted that since the motor body 3 is mounted between the air inlet buffer and the air outlet buffer, that is, the middle part of the motor body 3 is suspended in the air, the motor body 3 will not directly contact the motor housing, and therefore, the vibration of the middle part of the motor body 3 will not be transmitted to the motor housing.

[0053] Exemplarily, the air inlet end shock absorber 1 and the air outlet end shock absorber 2 can both be made of elastic material (for example, soft rubber) to form elastic shock absorbers.

[0054] In order to reduce the noise generated during the exhaust process of the vacuum cleaner, the rear end unit may further include an auxiliary exhaust duct provided between the air outlet 9 of the motor housing and the upper housing 15, and an auxiliary exhaust hole 14 provided at the rear end of the upper housing 15. One end of the auxiliary exhaust duct is connected to the air outlet 9 of the motor housing, and the other end is connected to the auxiliary exhaust hole 14. Compared with the existing vacuum cleaner with only a single exhaust channel, the exhaust channel is a dual-channel design, and the gas exhausted by the motor assembly is mainly discharged from the exhaust duct 11 outside the vacuum cleaner. The auxiliary exhaust duct can appropriately reduce the exhaust volume and air flow velocity of the exhaust duct 11, thereby reducing the noise generated during the exhaust process of the vacuum cleaner. It should be noted that the exhaust duct 11 provided in the handle 10 is used as the exhaust duct, because the exhaust hole 12 is provided at the bottom of the handle 10, downwardly arranged, far away from the user's nostrils, and the exhausted gas flows downward, so that the pollution of the gas near the user by the dust that is not completely filtered can be reduced; at the same time, the gas flowing downward will produce an upward reaction force on the vacuum cleaner, so that the user feels less heavy and convenient to hold. The exhaust duct provided between the air outlet of the motor housing and the upper housing 15 is used as an auxiliary exhaust duct, which can appropriately share the airflow of the exhaust hole 12 and reduce the vibration at the exhaust hole 12 on the basis of avoiding the pollution of the air near the user by the dust that is not completely filtered.

[0055] It should be noted that the exhaust volume of the exhaust duct 11 is greater than the exhaust volume of the auxiliary exhaust duct, and the exhaust volume of the exhaust duct 11 can account for 60% to 80% of the total exhaust volume (i.e., the total exhaust volume), and the exhaust volume of the auxiliary exhaust duct can account for 20% to 40% of the total exhaust volume. Exemplarily, the exhaust volume of the exhaust duct 11 can account for 70% of the total exhaust volume (i.e., the total exhaust volume), and the exhaust volume of the auxiliary exhaust duct can account for 30% of the total exhaust volume, and the exhaust volume ratio of the two can be controlled at 7:3.

[0056] In order to allow most of the gas exhausted from the air outlet 9 to enter the exhaust duct 11, the rear end unit may further include a first air guide 16 disposed between the air outlet 9 and the upper housing 15, and the gas exhausted from the air outlet 9 is introduced into the exhaust duct 11 in the handle 10 through the first air guide 16. In addition, the first air guide 16 blocks the direct communication between the air outlet 9 of the motor housing and the auxiliary exhaust hole 14, and can prevent the airflow exhausted from the motor housing from directly flowing out of the auxiliary exhaust duct without passing through the exhaust duct 11.

[0057] From the perspective of shock absorption, the windward surface of the first air guide 16 can be set to a concave arc structure. This is because, compared with other structures, the concave arc structure does not have a corner, and the gas can be directly and smoothly introduced into the exhaust duct 11 through the concave arc structure without turbulence at the corner, thereby reducing the vibration of the first air guide 16 when the gas interacts with the first air guide 16, thereby achieving a shock absorption effect.

[0058] In order to allow a small portion of the gas discharged from the air outlet 9 to enter the auxiliary exhaust duct, the rear end unit may further include a second air guide 17 disposed below the first air guide 16. The second air guide 17 is located on the windward surface of the connection between the exhaust duct 11 and the auxiliary exhaust duct, and the air outlet direction of the second air guide 17 points to the auxiliary exhaust duct. Under the action of the first air guide 16, the airflow is directed in the direction of the exhaust duct 11. Then, when passing through the connection between the exhaust duct 11 and the auxiliary exhaust duct, the airflow will contact the second air guide 17. Under the action of the second air guide 17, the airflow produces a certain amount of refraction, so that a small portion of the airflow can be directed to the auxiliary exhaust duct. Similarly, from the perspective of shock absorption, the windward surface of the second air guide 17 may also be set to a concave arc structure.

[0059] In order to further reduce the vibration at the exhaust hole 12, the exhaust duct 11 can also be set at an angle, which can increase the flow path length and flow time of the airflow in the exhaust duct 11. When the airflow flows in the exhaust duct 11, it is affected by the flow resistance and its flow velocity will gradually decrease. The longer the flow path and flow time, the greater the reduction. Therefore, the inclined exhaust duct 11 can further reduce the flow velocity of the airflow passing through the exhaust hole 12, thereby reducing the vibration at the exhaust hole 12.

[0060] In order to facilitate the user to control the vacuum cleaner in real time and understand the operating status of the vacuum cleaner, the above-mentioned rear-end unit can also include buttons 19 (for example, a power button and a speed adjustment button) arranged on the top of the upper shell 15 and a display 20 for displaying the remaining power of the vacuum cleaner and the current speed gear.

[0061] Exemplarily, the handle 10 may be an elongated structure, and the angle between the axis CC of the handle and the axis AA of the motor assembly and / or the axis BB of the vacuum cleaner suction pipe is 75° to 90°, and exemplary, the angle may be 78° to 85°. Limiting the angle between the axis CC of the handle and the axis AA of the motor assembly and / or the axis BB of the vacuum cleaner suction pipe to the above range makes the handle 10 more ergonomic and increases the comfort when holding the handle 10.

[0062] It is worth noting that the length of the handle 10 needs to be greater than the width of the user's hand. If the user wants to hold the middle area of ​​the handle 10, a greater force needs to be applied. In order to facilitate the user's holding, a handle baffle 21 can be provided on the handle 10. The provision of the handle baffle 21 is equivalent to reducing the length of the holding area of ​​the handle 10. When the user holds the handle 10, the top of the hand can be against the handle baffle 21 to prevent the hand from sliding upward, thereby reducing the force applied by the user to hold the handle and improving the user's comfort.

[0063] Specifically, in order to further improve the user's comfort, the distance between the handle baffle and the top of the handle 10 may be no greater than 34 mm, for example, 15 mm to 32 mm, and the height of the handle baffle relative to the surface of the handle 10 may be no less than 2 mm, for example, 5 mm to 15 mm.

[0064] In actual application, the motor assembly and the handle 10 will generate static electricity during the friction with the gas. In order to eliminate static electricity, a static electricity eliminator 13 may be provided on the handle 10. The static electricity eliminator 13 is embedded in a groove on the surface of the handle 10, and the outer wall surface is arranged in the same plane as the outer wall surface of the handle 10. The parts of the motor assembly and the handle 10 that are prone to generate static electricity are connected to the user's hand through the static electricity eliminator 13, so that the generated static electricity can be introduced into the human body through the static electricity eliminator 13 to eliminate static electricity.

[0065] It is understandable that, in order to facilitate powering the motor assembly, a charging hole 6 for powering the motor assembly may also be provided on the handle 10 .

[0066] Considering that the vacuum cleaner needs to be hung on a hanger when it is not in operation, a hanger assembly groove 7 cooperating with the hanger can be provided on the base 18, and the vacuum cleaner can be hung on the hanger through the hanger assembly groove 7.

[0067] For example, the exhaust hole 12 can be provided at the bottom of the rack assembly slot, that is, the bottom of the rack assembly slot can be provided as a perforated plate as the exhaust hole 12. In this way, the bottom space of the base 18 can be fully utilized to achieve the two functions of rack assembly and exhaust.

[0068] Embodiment 2

[0069] This embodiment provides a vacuum cleaner, which includes a front end unit and a rear end unit of the vacuum cleaner provided in the first embodiment in sequence along the air intake direction of the vacuum cleaner.

[0070] Compared with the prior art, the beneficial effects of the vacuum cleaner provided in this embodiment are substantially the same as the beneficial effects of the rear-end unit provided in the first embodiment, and are not described in detail here.

[0071] It is understandable that the above vacuum cleaner may also include a vacuum cleaner hanger, see Figures 5 and 6 The vacuum cleaner hanger includes a body and a connecting piece. The connecting piece is arranged on the body and protrudes from the body to form a hanging structure. The base of the vacuum cleaner mainframe is hung on the connecting piece. It can be understood that a corresponding connecting groove needs to be opened on the base. By placing the connecting piece in the connecting groove, the base and the vacuum cleaner hanger are connected. The vacuum cleaner hanger forms a hanging structure through the connecting piece, and the base is hung on the vacuum cleaner hanger, which can effectively reduce the volume of the vacuum cleaner hanger, reduce the weight and cost of the vacuum cleaner hanger itself, and thus simplify the overall structure of the vacuum cleaner.

[0072] Exemplarily, the length of the vacuum cleaner hanger may be 135 to 145 mm (eg, 140.5 mm), and the width of the vacuum cleaner hanger may be 60 to 65 mm (eg, 62.5 mm).

[0073] Specifically, the above-mentioned connecting member may include a connecting portion 22 and a hanging portion 23, and the hanging portion 23 is connected to the body through the connecting portion 22, that is, the bottom end of the connecting portion 22 is connected to the body, and the top end of the connecting portion 22 is connected to the hanging portion 23. It can be understood that in order to form a hanging structure, the edge of the above-mentioned hanging portion 23 (for example, the upper side, left side and / or right side of the hanging portion 23) needs to protrude from the outside of the connecting portion 22. When the connecting slot on the bottom plate of the host is hung on the hanging member, the edge of the hanging portion 23 can be stuck in the connecting slot, so as to better limit the bottom plate of the host and ensure that it will not fall out of the connecting slot.

[0074] Specifically, the structure of the main body may include a middle plate 24 and end plates 25 disposed at both ends of the middle plate 24 . The middle plate 24 is located between the two end plates 25 , and the connecting piece is disposed on the middle plate 24 .

[0075] In order to facilitate the connection between the base and the connecting piece, the height of the middle plate 24 is higher than the height of the end plate 25 relative to the mounting surface of the vacuum cleaner hanger. Specifically, when the bottom surfaces of the middle plate 24 and the end plate 25 are in the same plane, the top surface of the middle plate 24 is higher than the top surface of the end plate 25, and the thickness of the middle plate 24 is greater than the thickness of the end plate 25. This is because the height of the end plate 25 is lower than the height of the middle plate 24, the gap between the end plate 25 and the connecting part 22 is greater than the gap between the middle plate 24 and the connecting part 22, and when the base is connected to the middle plate 24, the base can be more conveniently hung on the connecting piece. At the same time, when the body needs to be fixedly connected to the mounting surface by screws, the screws can be set on the end plate 25, and the screws pass through the end plate 25 to connect with the mounting surface, appropriately reducing the thickness of the end plate 25, and can reduce the size of the required screws. In addition, the end plate 25 at the lower end can give up a certain distance, so that the base rotates counterclockwise at a certain angle relative to the plane of the middle plate 24 under the action of gravity, so that the connecting groove can be in close contact with the connecting piece.

[0076] In order to reduce the shaking of the base after assembly, baffles 26 for limiting the base can also be set on both sides of the above-mentioned middle plate 24. When the base is hung on the connecting piece, the two sides of the base are connected with the two baffles 26. The baffles 26 limit the base, thereby reducing the shaking of the base.

[0077] In order to store the power cord of the power adapter, the above-mentioned vacuum cleaner bracket can also include a side plate 27 arranged around the edge of the body, and the side plate 27 and the body form a cavity for accommodating the power cord of the power adapter, and the cavity is located on the side of the body facing the installation surface.

[0078] Considering that the volume of the cavity formed by the side plate 27 and the main body is relatively large, it is impossible to limit the direction of the power cord, resulting in a messy storage of the power cord. Therefore, the body can also be provided with a plurality of parallel positioning plates 28 on the side facing the installation surface. The positioning plates 28 are provided with positioning grooves 29 for limiting the direction of the power cord. The two ends of the side plate 27 are provided with threading grooves 30. The positions of the plurality of positioning grooves 29 correspond to each other and are located on the same straight line. The power cord is clamped in the threading grooves 30 and the positioning grooves 29. During implementation, the power cord enters the cavity through the threading groove 30 at one end, and then is clamped in the plurality of positioning grooves 29 in sequence, and finally passes through the threading groove 30 at the other end, thereby completing the storage of the power cord.

[0079] It is worth noting that the above-mentioned vacuum cleaner bracket needs to bear the weight of the vacuum cleaner host for a long time. In order to improve the structural strength of the above-mentioned vacuum cleaner bracket, it can also include a reinforcing plate 31 arranged on the side facing the installation surface, and the structural strength of the above-mentioned vacuum cleaner bracket is improved by the reinforcing plate 31.

[0080] In order to avoid interference between the reinforcing plate 31 and the positioning plate 28, which would affect the storage of the power cord, the reinforcing plate 31 can be perpendicular to the positioning plate 28, and the positioning groove 29 is provided on the positioning plate 28 between two adjacent reinforcing plates 31. In this way, the power cord will not pass through the reinforcing plate 31 during the threading process, so that the reinforcing plate 31 and the positioning plate 28 can be prevented from interfering with each other.

[0081] For the connection between the vacuum cleaner hanger and the mounting surface, the two can be fixedly connected by an adhesive layer or screws. It is understandable that, when the screw fixing method is adopted, the body (for example, on the end plate 25) needs to be provided with a mounting hole 32 that penetrates the body.

[0082] For the structure of the front end unit, see Figures 7 to 14 , including a suction port assembly 33, a dust collecting assembly connected to the suction port assembly 33, and a secondary filter assembly 34 and a power supply assembly 35 located above the dust collecting assembly, wherein the power supply assembly 35 is sleeved on the outer peripheral surface of the secondary filter assembly 34, and the power supply assembly 35 surrounds the secondary filter assembly 34. The power supply assembly 35 is sleeved on the outer peripheral surface of the secondary filter assembly 34, that is, the secondary filter assembly 34 and the power supply assembly 35 are assembled at the same time using the upper area of ​​the dust collecting assembly, and there is no need to set up an assembly area for the power supply assembly 35 separately, so that the upper area of ​​the dust collecting assembly can be effectively utilized, the space utilization rate is improved, and the overall volume of the vacuum cleaner is reduced.

[0083] Exemplarily, the dust collecting assembly includes a dust cup 36 and a cyclone filter assembly disposed in the dust cup 36. The area between the dust cup 36 and the cyclone filter assembly is a first dust collecting area, and the area inside the cyclone filter assembly is a second dust collecting area.

[0084] In order to improve the rationality of the gravity distribution of the above-mentioned front-end unit, the above-mentioned dust cup 36, cyclone filter assembly, secondary filter assembly 34 and power supply assembly 35 are coaxially arranged (axis DD of the secondary filter assembly). By adopting the coaxial arrangement, the gravity distribution of the front-end unit is more reasonable, and the user's hand feels more comfortable when holding the vacuum cleaner, thereby improving the user experience.

[0085] As for the structure of the cyclone filter assembly, specifically, it includes a filter screen cover 37, a filter frame 38, a cone portion 39 and a bracket 40. One end of the bracket 40 is fixedly connected to the secondary filter assembly 34, and the other end of the bracket 40 is respectively fixedly connected to the filter frame 38 and the cone portion. The cone portion is located in the filter frame 38, and the filter frame 38 is sleeved on the outer peripheral surface of the cone portion. The filter screen cover 37 is sleeved on the outer peripheral surface of the filter frame 38.

[0086] In order to realize the detachable connection between the bracket 40 and the secondary filter assembly 34, the above-mentioned cyclone filter assembly also includes a bracket top edge 41 and an assembly part 42 arranged on the inner wall of the bracket top edge 41, one end of the bracket top edge 41 is detachably connected to the secondary filter assembly 34, and the other end of the bracket top edge 41 is fixedly connected to the bracket 40, and the bracket 40 is detachably connected to the secondary filter assembly 34 through the bracket top edge 41 and the assembly part 42, so that the cyclone filter assembly can be manually disassembled and assembled, which is convenient for cleaning. Exemplarily, the bracket 40 and the bracket top edge 41 are integrally formed, and the secondary filter assembly 34 is connected to one end and extends upward and toward the axis direction of the bracket 40 to form the bracket top edge 41, and the number of the assembly parts 42 is at least two.

[0087] Specifically, the structure of the cone portion 39 includes a plurality of cones. Exemplarily, the number of the cones is 5 to 12 (eg, 7), and the plurality of cones are evenly arranged around the axis of the cone portion.

[0088] In order to improve the filtering effect of the cyclone filter assembly, a plurality of filtering holes are provided on the filter screen cover 37, and the aperture of the filtering hole is 0.1 mm to 0.5 mm, for example, 0.3 mm. Limiting the aperture of the filtering hole to the above range can better filter the dust in the gas, thereby improving the filtering effect of the cyclone filter assembly.

[0089] In order to prevent the dust in the dust collecting assembly from flowing back to the cyclone filtering assembly, the above-mentioned cyclone filtering assembly also includes a dust shield assembly arranged below the filter frame 38. Specifically, the above-mentioned dust shield assembly includes a dust shield tube body 43, a dust shield ring 44 (for example, made of soft rubber) and a dust shield plate 45, wherein the dust shield tube body 43 is arranged at the end of the filter frame 38 away from the bracket 40, the dust shield plate 45 is arranged on the outer wall surface of the dust shield tube body 43, and its length is less than or equal to the length of the dust shield tube body 43, the dust shield ring 44 is sleeved at the connection between the dust shield tube body 43 and the filter frame 38 and is located above the dust shield plate 45, and the outer edge of the dust shield ring 44 is inclined in the direction away from the bracket 40, that is, the dust shield ring 44 is inclined downward. It can be understood that the interior of the tube body is a hollow structure for storing dust particles separated by the cone. Among them, the dust shield tube body 43 can be used to isolate the first dust collecting area and the second dust collecting area on the one hand, preventing large dust particles in the first dust collecting area from entering the second dust collecting area, and on the other hand, it can also guide the small dust particles falling from the cone bottom so that they can be concentrated and fall into the second dust collecting area; for the dust shield ring 44, since the large dust particles in the first dust collecting area will rotate upward around the tube body under the action of negative pressure suction, the setting of the dust shield ring 44 can prevent this part of the large dust particles from entering the filter cover 37 again. After the large dust particles rotating upward come into contact with the dust shield ring 44, they will stop rotating upward and fall to the bottom of the first dust collecting area again; similarly, the setting of the dust shield plate 45 can also prevent the large dust particles from rotating upward, so that they fall to the bottom of the first dust collecting area again.

[0090] In order to ensure the stability of the working environment of the power supply component 35 and the secondary filter component 34, the front-end unit further includes an outer shell 46 and an inner shell 47 located inside the outer shell 46, the secondary filter component 34 is located in the inner shell 47, the power supply component 35 is located between the inner shell 47 and the outer shell 46, the inner shell 47 is located above the dust collection component and is connected to the dust collection component, so that the gas discharged from the air outlet of the dust collection component can enter the filter component of the inner shell 47 for re-filtration; an intermediate air duct is formed in the inner shell 47 and in the area between the dust collection component (cyclone filter component) and the secondary filter component 34. Among them, the outer shell 46 is used to ensure the stability of the working environment of the power supply component 35 and the secondary filter component 34; the inner shell 47 is used to isolate the power supply component 35 and the secondary filter component 34, thereby reducing the influence of the heating of the power supply component 35 on the secondary filter component 34 and the influence of the vibration of the secondary filter component 34 on the power supply component 35.

[0091] In order to guide the dust to the dust collection area of ​​the dust cup 36, a spiral ring 48 is provided on the inner circumference of the outer shell 46 near one end of the dust collection component. The side of the spiral ring 48 facing the dust collection component is a spiral surface, and the spiral ring 48 is located above the dust collection component. The dust entering the dust collection component (dust cup 36) contacts the spiral ring 48 under the action of negative pressure suction and centrifugally rotates along the spiral end surface, thereby effectively guiding the dust to the dust collection area of ​​the dust collection component to achieve the effect of dust reduction.

[0092] Specifically, the structure of the inner shell 47 includes a body 49, a boss 50, an assembly ring 51, an assembly part 52, an assembly area and an exhaust passage. The boss 50 is arranged on the outer circumference of the body 49 and is located at one end of the body 49 close to the dust collecting assembly. The power supply assembly 35 is placed on the boss 50. The assembly ring 51 is arranged on the inner circumference of the body 49 and is located at one end of the body 49 close to the dust collecting assembly. The assembly part 52 is arranged on the assembly ring 51. The assembly ring 51 and the assembly part 52 are used for the connection between the inner shell 47 and the dust collecting assembly (the top edge of the bracket 41). When the cyclone filter assembly is assembled with the inner shell 47, the top edge 41 of the bracket on the cyclone filter assembly is placed in the assembly area of ​​the assembly ring 51, and the cyclone filter assembly is rotated clockwise so that the assembly part 52 overlaps with the assembly part 42, and the assembly of the cyclone filter assembly and the inner shell 47 is completed. When the cyclone filter assembly is disassembled from the inner housing 47, the cyclone filter assembly is rotated counterclockwise to separate the assembly portion 52 from the assembly part 42, and the cyclone filter assembly is disassembled from the inner housing 47. In this way, the cyclone filter assembly can be taken out of the dust cup 36 for cleaning.

[0093] In order to be able to concentrate the gas discharged from the dust collecting component and introduce it upward into the secondary filter component 34 for re-filtration, an air guide 53 is also provided on the inner circumferential surface of the above-mentioned main body 49. The air guide 53 is located at one end of the main body 49 close to the dust collecting component, and the inner edge of the air guide 53 is inclined toward the direction of the secondary filter component 34. That is to say, the air guide 53 is inclined upward to form an annular truncated cone structure similar to a trumpet-shaped tube body, so that the opening of the air guide 53 toward one end of the dust collecting component (the air inlet end) is larger, and the opening of the air guide 53 toward one end of the secondary filter component 34 (the air outlet end) is smaller, so that the gas discharged from the dust collecting component can be gathered, the gas flow rate in the secondary filter component 34 can be increased, and the gas can be concentrated upward into the secondary filter component 34 for re-filtration.

[0094] It can be understood that in order to achieve the installation of the secondary filter assembly 34, the inner circumferential surface of the above-mentioned main body 49 is also provided with a mounting piece for placing the secondary filter assembly 34. The mounting piece is annular and is arranged along the inner circumferential surface of the inner shell 47. The bottom end of the secondary filter assembly 34 is placed on the upper end. In addition, the secondary filter assembly 34 is placed in the mounting groove of the mounting piece, and the secondary filter assembly 34 can also be positioned.

[0095] In order to promote the gas flow between the secondary filter assembly 34 and the inner shell 47, a gap is provided between the outer wall surface of the secondary filter assembly 34 and the inner wall surface of the inner shell 47, thereby forming an annular exhaust area of ​​the secondary filter assembly 34. For example, the gap between the outer wall surface of the secondary filter assembly 34 and the inner wall surface of the inner shell 47 is 6 mm to 15 mm. Since the exhaust area is close to the power supply assembly 35, when the filtered airflow circulates in the exhaust area, the power supply component can be cooled.

[0096] As for the structure of the power supply assembly 35, specifically, it includes a battery bracket, a battery pack arranged on the battery bracket, and a circuit board assembly for connecting the battery pack with an external unit requiring power supply.

[0097] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed in the present application should be covered within the protection scope of the present application.

Claims

1. A rear end unit of a vacuum cleaner, characterized in that: It includes an upper shell, a handle, a base and a motor assembly, wherein the handle is located between the upper shell and the base; The upper housing is provided with a motor cavity for accommodating the motor assembly, and the motor assembly is arranged in the motor cavity; An exhaust passage is formed in the handle, an exhaust hole is formed in the base, and the motor cavity is connected with the exhaust hole through the exhaust passage; The motor assembly comprises a motor housing and a motor body arranged in the motor housing; The rear end unit further includes an auxiliary exhaust duct provided between the air outlet of the motor housing and the upper housing, and an auxiliary exhaust hole provided at the rear end of the upper housing; one end of the auxiliary exhaust duct is connected to the air outlet of the motor housing, and the other end is connected to the auxiliary exhaust hole; The rear end unit further comprises a first air guide member disposed between the air outlet of the motor housing and the upper housing, and the gas discharged from the air outlet is introduced into the exhaust duct through the first air guide member; The rear end unit further includes a second air guide member disposed below the first air guide member, the second air guide member being located on a windward surface of a connection between the exhaust duct and the auxiliary exhaust duct, and the air outlet direction of the second air guide member being directed toward the auxiliary exhaust duct; The airflow is guided to the direction of the exhaust duct under the action of the first air guide, and when passing through the connection between the exhaust duct and the auxiliary exhaust duct, the airflow contacts the second air guide, and a part of the airflow is guided to the auxiliary exhaust duct under the action of the second air guide; The motor assembly also includes a shock absorbing assembly wrapping the motor body; The motor housing includes an air inlet housing and an air outlet housing that is buckled with the air inlet housing; the interiors of the air inlet housing and the air outlet housing constitute a chamber for accommodating the motor body and the buffer assembly; the air inlet housing is provided with an air inlet, and the air outlet housing is provided with an air outlet; The damping component comprises an air inlet damping component and an air outlet damping component; the air inlet damping component is arranged between the air inlet shell and the motor body, and the air outlet damping component is arranged between the air outlet shell and the motor body.

2. The rear end unit of the vacuum cleaner according to claim 1, characterized in that: The axis of the motor assembly is arranged along the horizontal direction.

3. The rear end unit of the vacuum cleaner according to claim 1, characterized in that: The motor assembly also includes an air inlet end support foot arranged at the bottom of the air inlet end shell and an air outlet end support foot arranged at the bottom of the air outlet end shell.

4. The rear end unit of a vacuum cleaner according to any one of claims 1 to 3, characterized in that: It also includes buttons arranged on the top of the upper shell and a display for displaying the remaining power of the vacuum cleaner and the current speed gear.

5. The rear end unit of a vacuum cleaner according to any one of claims 1 to 3, characterized in that: The included angle between the axis of the handle and the axis of the motor assembly and / or the axis of the vacuum cleaner suction pipe is 75° to 90°.

6. The rear end unit of a vacuum cleaner according to any one of claims 1 to 3, characterized in that: The handle is provided with a handle blocking piece, and the handle blocking piece is used to abut against the top of the user's hand.

7. The rear end unit of the vacuum cleaner according to claim 6, characterized in that: The distance between the handle baffle and the top of the handle is no more than 34 mm; The height of the handle baffle relative to the handle surface is not less than 2 mm.

8. The rear end unit of a vacuum cleaner according to any one of claims 1 to 3, characterized in that: The handle is provided with a static eliminator, and the static electricity generated by the motor assembly and the handle is introduced to the outside through the static eliminator.

9. The rear end unit of a vacuum cleaner according to any one of claims 1 to 3, characterized in that: The handle is provided with a charging hole for supplying power to the motor assembly.

10. The rear end unit of a vacuum cleaner according to any one of claims 1 to 3, characterized in that: The base is provided with a hanger mounting groove which cooperates with the vacuum cleaner hanger.

11. A vacuum cleaner, characterized in that: A rear end unit comprising the vacuum cleaner according to any one of claims 1 to 10.

Images