Silent noise reduction type dust collector structure

Abstract

This invention discloses a silent, noise-reducing vacuum cleaner structure. It includes a base, on which a dust cup is mounted. The dust cup is equipped with a suction pipe and a negative pressure pipe. One end of the suction pipe is fitted with an insert, and the other end of the suction pipe communicates with the interior of the dust cup. One end of the negative pressure pipe is also connected to the interior of the dust cup, and a filter cover is installed at one end of the negative pressure pipe. The base also includes a suction device, and the other end of the negative pressure pipe is connected to the suction device. Several guide vanes are evenly distributed on the side wall of the filter cover. The beneficial effects of this invention are: airflow can pass evenly through each ventilation gap, thereby greatly reducing the noise generated during vacuum cleaner operation, resulting in good noise reduction; the airflow is more stable and uniform when passing through the gaps between the guide vanes, further reducing wind noise generated during vacuum cleaner operation.

Description

Technical Field

[0001] This invention relates to the technical field of vacuum cleaners, and in particular to a structure for a silent and noise-reducing vacuum cleaner. Background Technology

[0002] With the development of the times and the improvement of living standards, vacuuming equipment, especially household vacuum cleaners, has been widely used. A vacuum cleaner is an electrical appliance that uses an electric motor (suction motor / vacuum motor) to generate negative air pressure in a sealed casing to suck up dust or debris.

[0003] Chinese Patent Publication No. CN208988696U, published on June 18, 2019, discloses an upright vacuum cleaner, including a dustbin, an upper seat, and a vacuum motor. It also includes a filter cartridge and multiple bottom wheels. The filter cartridge is disposed inside the dustbin, and the bottom wheels are disposed at the bottom of the dustbin. An air inlet tube is provided on the side wall of the dustbin. The upper end of the dustbin is open, and the upper seat seals the upper opening of the dustbin, engaging with it. A motor cavity is provided inside the dustbin, and the vacuum motor is located within the motor cavity, communicating with the interior of the dustbin. The communication between the motor cavity and the interior of the dustbin is separated by the filter cartridge. An exhaust port communicating with the motor cavity is provided on the upper seat, with the exhaust end of the vacuum motor facing the exhaust port and the inlet end facing the dustbin. A sponge tube is provided inside the filter cartridge, with the outer wall of the sponge tube contacting the inner wall of the filter cartridge. The drawback of this patent is that the vacuum cleaner lacks guidance for the sucked-in air during operation, easily causing significant airflow noise, which greatly affects the user experience.

[0004] In conclusion, there is a current need for a quiet vacuum cleaner structure with good noise reduction effect. Summary of the Invention

[0005] The present invention aims to overcome the shortcomings of existing vacuum cleaners in that they lack guidance for the intake air and easily generate significant wind noise, and provides a quiet vacuum cleaner structure with good noise reduction effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A silent, noise-reducing vacuum cleaner structure includes a base, a dust cup mounted on the base, a suction pipe and a negative pressure pipe mounted on the dust cup, an insertion tube installed at one end of the suction pipe, and the other end of the suction pipe communicating with the interior of the dust cup, and one end of the negative pressure pipe communicating with the interior of the dust cup, with a filter cover installed at one end of the negative pressure pipe, a suction device also mounted on the base, and the other end of the negative pressure pipe communicating with the suction device, and a plurality of air guide blades evenly distributed on the side wall of the filter cover.

[0008] During use, the suction device operates, creating a negative pressure zone at the negative pressure pipe. Air containing debris is drawn into the dust cup through the suction pipe. The drawn-in debris is then trapped in the dust cup by the filter cover, while the airflow passes through the gaps between adjacent guide vanes on the filter cover and exits through the negative pressure pipe. Ventilation gaps are provided between adjacent guide vanes, and the even distribution of these vanes ensures that airflow passes evenly through each gap, significantly reducing the noise generated during vacuum cleaner operation and providing excellent noise reduction.

[0009] Preferably, the filter cover is funnel-shaped, with its opening snap-fitting with the port of the negative pressure pipe. The guide vanes are arc-shaped, arranged in a ring around the geometric center line of the filter cover with uniform spacing. One end of each guide vane is fixed near the filter cover opening, and the other end is fixed near the bottom of the filter cover. The width of each guide vane gradually decreases from one end to the other. The snap-fit ​​method is simple and convenient, facilitating assembly and disassembly, and simplifying maintenance and repair. The design of the guide vanes ensures smoother and more uniform airflow as it passes through the gaps between them, further reducing airflow noise during vacuum cleaner operation.

[0010] Preferably, the dust cup has an inner cylinder, the negative pressure pipe is located inside the inner cylinder, and the other end of the negative pressure pipe is located on the bottom surface of the inner cylinder. The suction pipe is located outside the inner cylinder, and the other end of the suction pipe is located on the side wall of the inner cylinder near the bottom. A spiral deflector is provided on the bottom surface of the inner cylinder, positioned outside the negative pressure pipe. One end of the spiral deflector is higher than the other end, and the other end is located at the other end of the suction pipe. Air carrying debris enters the dust cup from the suction pipe under the negative pressure of the negative pressure pipe and rises spirally along the spiral deflector. The airflow then passes through a filter on one end of the negative pressure pipe and is discharged through the negative pressure pipe, while the debris remains in the dust cup due to the filter. The spiral deflector design reduces the airflow velocity, consumes the energy of the airflow, and reduces the noise generated by the airflow, resulting in good noise reduction.

[0011] Preferably, the surface of the dust cup is provided with a noise reduction port connected to the negative pressure pipe. The noise reduction port is funnel-shaped, with the diameter of one end smaller than the diameter of the other end. The other end of the negative pressure pipe is connected to one end of the noise reduction port. An air duct is provided inside the base, and the other end of the noise reduction port is connected to the suction device via the air duct. The airflow passes through the negative pressure pipe, then sequentially through the noise reduction port and the air duct to reach the suction device. The shape design of the noise reduction port allows the airflow space to gradually increase as it passes through, thereby reducing the flow velocity and minimizing collisions between airflows, further reducing wind noise.

[0012] Preferably, the dust cup is equipped with a dust cup HEPA filter holder, which is installed at the port on the other end of the noise reduction port. The dust cup also has a foolproof bracket, one end of which is mounted on and hinged to the dust cup. The surface of the dust cup has a foolproof bracket movable hole that matches the other end of the bracket, located on the side of the noise reduction port. The other end of the foolproof bracket is movably connected to the foolproof bracket movable hole. The dust cup HEPA filter holder is used to install the dust cup HEPA filter. The HEPA filter holder is used to install the outlet HEPA filter. When the dust cup HEPA filter holder is not installed, the other end of the foolproof bracket is exposed through the foolproof bracket movable hole to remind the installer not to forget to install the HEPA filter. When the dust cup HEPA filter holder is installed at the port of the noise reduction port, the other end of the foolproof bracket will be pushed into the foolproof bracket movable hole by the dust cup HEPA filter holder.

[0013] Preferably, the suction device includes a suction fan installed inside the base, with the suction side of the suction fan facing the noise reduction port. An air outlet HEPA filter holder is installed on the air outlet side of the suction fan. An air outlet plate is provided on the side wall of the base, facing the air outlet HEPA filter holder. The air outlet plate and the base are snapped together. An air outlet latch is slidably connected to the air outlet plate, and the latch has a latch insert. The base has a slot that matches the latch insert. The air outlet HEPA filter holder is used to install the air outlet HEPA filter. The air outlet plate is detachably connected to the base through the insertion and engagement of the latch insert and the slot. The connection method is simple and convenient, easy to install and disassemble, and facilitates the addition and replacement of the air outlet HEPA filter.

[0014] Preferably, a handle is mounted on the base, one end of which is hinged to the base, and a dust cup cover matching the dust cup opening is fixed to the other end of the handle. A latching block is movably connected to the handle, and a switch connected to the latching block is provided on the surface of the handle. A latching position matching the latching block is provided on the base. The dust cup cover is installed at the opening of the dust cup through the cooperation of the latching block and the latching position. The operator can control the latching block by operating the switch on the handle to open the dust cup cover. The structure is simple and the operation is convenient.

[0015] Preferably, the handle surface has a button through hole, the switch includes a button, the button is placed in the button through hole and slidably connected thereto, the latch is installed inside the handle and hinged thereto, one end of the latch has a pressure plate in contact with the button, and the other end of the latch has a hook that matches the latch position, the hook and the pressure plate are set at an obtuse angle, the side wall of the handle has a hook avoidance hole, the hook passes through the hook avoidance hole and is placed outside the handle. When the dust cup cover is on the opening of the dust cup, the hook is hooked at the latch position, realizing the snap-fit ​​fixation of the dust cup cover at the opening of the dust cup. When it is necessary to open the dust cup cover, the operator can press the button, causing the latch to rotate under the transmission action of the pressure plate, and driving the hook to rotate synchronously, so that the hook disengages from the latch position, thereby releasing the snap-fit ​​state of the dust cup cover. At this time, the operator can easily open the dust cup cover. The structure is simple and the operation is convenient.

[0016] Preferably, the dust cup cover has an auxiliary locking head at its edge, with locking posts on both sides. The side wall of the dust cup, near its opening, has an auxiliary locking groove that matches the auxiliary locking head. Both sides of the auxiliary locking groove have locking holes that match the locking posts. The end of each locking post, near the locking hole, has a transition chamfer. When the dust cup cover covers the opening of the dust cup, the locking posts on the auxiliary locking head automatically engage with the locking holes in the auxiliary locking groove, further improving the fixation of the dust cup cover at the opening and allowing it to fit more stably. When the dust cup cover is opened, the locking posts disengage from the locking holes, allowing the dust cup cover to open and close smoothly. The transition chamfer design improves the smoothness of the locking posts engaging with the locking holes, making operation simple, convenient, time-saving, and labor-saving.

[0017] Preferably, the base is equipped with an insertion head, which is snapped into the base. The insertion head is positioned between the suction hose and the insertion hose. One end of the insertion head corresponds to one end of the suction hose, and a sealing ring is provided between them. One end of the insertion head and one end of the suction hose are sealed together by the sealing ring. The other end of the insertion head is snapped into one end of the insertion hose. The other end of the insertion hose is equipped with a bend protective sleeve, which is snapped into the insertion hose. The sealing ring design improves the sealing performance at the connection between the insertion head and the suction hose. The insertion head facilitates the installation of the insertion hose. The other end of the insertion hose is used to connect to the suction hose. The bend protective sleeve design provides good protection for the connection between the suction hose and the insertion hose, extending the service life of the parts. The insertion head, insertion tube, and elbow protective sleeve are designed with detachable snap-fit ​​connections. Each component is manufactured separately and then paired and assembled after processing, which reduces the processing difficulty, facilitates processing, and reduces the difficulty of later repair and maintenance.

[0018] The beneficial effects of this invention are: airflow can pass evenly through each ventilation gap, thereby greatly reducing the noise generated when the vacuum cleaner is working, resulting in good noise reduction; the airflow is more stable and uniform when passing through the gaps between the air guide vanes, further reducing the wind noise generated by the airflow when the vacuum cleaner is working; the reduced airflow velocity consumes the energy of the airflow, reducing the noise generated by the airflow, resulting in good noise reduction; the reduction of mutual collisions between airflows further reduces wind noise; the connection method is simple and convenient, easy to assemble and disassemble, and convenient for later maintenance and repair; it facilitates the installation and replacement of HEPA filters; the structure is simple and easy to operate; and the processing difficulty is reduced. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a top view of the present invention;

[0021] Figure 3 yes Figure 2 Sectional view at point AA;

[0022] Figure 4 This is a diagram showing the connection between the foolproof holder and the dust cup;

[0023] Figure 5 This is a diagram showing the connection between the auxiliary card head and the auxiliary card slot;

[0024] Figure 6 It is a three-dimensional view of a filter cover;

[0025] Figure 7 This is a top view of the filter cover;

[0026] Figure 8 It is a 3D diagram of a dust cup;

[0027] Figure 9 This is a top view of a dust cup;

[0028] Figure 10 yes Figure 9 Sectional view at point BB;

[0029] Figure 11 yes Figure 9 Sectional view at point CC.

[0030] In the diagram: 1. Base, 2. Dust cup, 3. Suction hose, 4. Negative pressure hose, 5. Insert hose, 6. Filter cover, 7. Air guide vane, 8. Inner cylinder, 9. Spiral deflector, 10. Noise reduction port, 11. Air duct, 12. Dust cup HEPA filter holder, 13. Foolproof bracket, 14. Foolproof bracket movable hole, 15. Suction fan, 16. Exhaust HEPA filter holder, 17. Exhaust plate, 18. Exhaust latch, 19. Latch insert, 20. Slot, 21. Handle, 22. Dust cup cover, 23. Buckle block, 24. Buckle position, 25. Button through hole, 26. Button, 27. Pressure plate, 28. Hook, 29. Hook clearance hole, 30. Auxiliary clip, 31. Clip post, 32. Auxiliary slot, 33. 34. Insertion port, 35. Insertion port sealing ring, 36. Elbow protective sleeve. Implementation

[0031] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0032] like Figure 1 , Figure 2 and Figure 3 In the described embodiment, a silent, noise-reducing vacuum cleaner structure includes a base 1, a dust cup 2 mounted on the base 1, a suction pipe 3 and a negative pressure pipe 4 mounted on the dust cup 2, an insertion tube 5 installed at one end of the suction pipe 3, and the other end of the suction pipe 3 connected to the interior of the dust cup 2; one end of the negative pressure pipe 4 is connected to the interior of the dust cup 2, and a filter cover 6 is installed at one end of the negative pressure pipe 4; the base 1 also has a suction device, and the other end of the negative pressure pipe 4 is connected to the suction device. Figure 6 and Figure 7 As shown, the side wall of the filter cover 6 is provided with several air guide blades 7, which are evenly distributed at intervals.

[0033] The filter cover 6 is funnel-shaped, and the opening of the filter cover 6 is snapped into the port of the negative pressure pipe 4. The guide vane 7 is arc-shaped, and the guide vane 7 is distributed in a ring about the geometric center line of the filter cover 6 and is evenly spaced. One end of the guide vane 7 is fixed to the side near the opening of the filter cover 6, and the other end of the guide vane 7 is fixed to the side near the bottom of the filter cover 6. The width of the guide vane 7 gradually decreases from one end to the other end.

[0034] like Figure 6 and Figure 7As shown, the dust cup 2 has an inner cylinder 8 inside, the negative pressure pipe 4 is located inside the inner cylinder 8, and the other end of the negative pressure pipe 4 is located on the bottom surface of the inner cylinder 8. The suction pipe 3 is located outside the inner cylinder 8, and the other end of the suction pipe 3 is located on the side wall of the inner cylinder 8 and close to the bottom of the inner cylinder 8. The bottom surface of the inner cylinder 8 is provided with a spiral backflow plate 9, which is placed outside the negative pressure pipe 4. The height of one end of the spiral backflow plate 9 is higher than the height of the other end of the spiral backflow plate 9, and the other end of the spiral backflow plate 9 is placed at the other end of the suction pipe 3.

[0035] like Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, the surface of the dust cup 2 is provided with a noise reduction port 10 connected to the negative pressure pipe 4. The noise reduction port 10 is horn-shaped, and the diameter of one end of the noise reduction port 10 is smaller than the diameter of the other end of the noise reduction port 10. The other end of the negative pressure pipe 4 is connected to one end of the noise reduction port 10. The base 1 is provided with an air duct 11, and the other end of the noise reduction port 10 is connected to the suction device through the air duct 11.

[0036] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the dust cup 2 is provided with a dust cup HEPA holder 12, which is installed at the port of the other end of the noise reduction port 10. The dust cup 2 is provided with a foolproof bracket 13, one end of which is installed on the dust cup 2 and hinged thereto. The surface of the dust cup 2 is provided with a foolproof bracket movable hole 14 that matches the other end of the foolproof bracket 13. The foolproof bracket movable hole 14 is located on the side of the noise reduction port 10, and the other end of the foolproof bracket 13 is movably connected to the foolproof bracket movable hole 14.

[0037] The suction device includes a suction fan 15 installed inside the base 1. The suction side of the suction fan 15 faces the noise reduction port 10. An air outlet HEPA frame 16 is installed on the air outlet side of the suction fan 15. An air outlet plate 17 is provided on the side wall of the base 1. The air outlet plate 17 faces the air outlet HEPA frame 16. The air outlet plate 17 and the base 1 are snapped together. An air outlet latch 18 is slidably connected on the air outlet plate 17. A latch insert 19 is provided on the air outlet latch 18. A slot 20 matching the latch insert 19 is provided on the base 1.

[0038] A handle 21 is installed on the base 1. One end of the handle 21 is hinged to the base 1. A dust cup cover 22 that matches the opening of the dust cup 2 is fixed on the other end of the handle 21. A buckle 23 is movably connected to the handle 21. A switch that connects to the buckle 23 is provided on the surface of the handle 21. A buckle position 24 that matches the buckle 23 is provided on the base 1.

[0039] The handle 21 has a button through hole 25 on its surface. The switch includes a button 26, which is placed in the button through hole 25 and slidably connected to it. The buckle 23 is installed inside the handle 21 and hinged to it. One end of the buckle 23 is provided with a pressure plate 27 that contacts the button 26. The other end of the buckle 23 is provided with a hook 28 that matches the buckle position 24. The hook 28 and the pressure plate 27 are set at an obtuse angle. The side wall of the handle 21 is provided with a hook avoidance hole 29. The hook 28 passes through the hook avoidance hole 29 and is placed outside the handle 21.

[0040] like Figure 5 As shown, an auxiliary locking head 30 is provided at the edge of the dust cup cover 22, and locking posts 31 are provided on both sides of the auxiliary locking head 30. An auxiliary locking groove 32 matching the auxiliary locking head 30 is provided on the side wall of the dust cup 2 at its opening. Locking holes 33 matching the locking posts 31 are provided on both sides of the auxiliary locking groove 32. A transition chamfer is provided at the end of the locking post 31 on the side close to the locking hole 33.

[0041] like Figure 3 As shown, the base 1 is provided with a tube head 34, which is snapped into the base 1. The tube head 34 is placed between the suction pipe 3 and the tube 5. One end of the tube head 34 corresponds to one end of the suction pipe 3, and a tube head sealing ring 35 is provided between them. One end of the tube head 34 and one end of the suction pipe 3 are sealed and connected by the tube head sealing ring 35. The other end of the tube head 34 is snapped into one end of the tube 5. The other end of the tube 5 is provided with a bend protective sleeve 36, which is snapped into the tube 5.

[0042] During operation, the suction fan 15 creates a negative pressure zone at the negative pressure pipe 4, drawing air containing debris into the dust cup 2 through the suction pipe 3. The air then rises spirally along the spiral deflector 9. The airflow passes through the filter cover 6 at one end of the negative pressure pipe 4, through the gap between adjacent guide vanes 7 on the filter cover 6, and is discharged along the negative pressure pipe 4. The debris remains in the dust cup 2 due to the obstruction of the filter cover 6. The even distribution and shape design of the guide vanes 7 ensure that the airflow passes evenly through each ventilation gap, significantly reducing the noise generated during vacuum cleaner operation. The spiral deflector 9's guiding design reduces the airflow velocity, dissipates the energy of the airflow, and further reduces the noise generated by the airflow.

[0043] After passing through the negative pressure pipe 4, the airflow passes through the noise reduction port 10 and the air duct 11 in sequence to reach the suction fan 15. The shape design of the noise reduction port 10 makes the space gradually increase as the airflow passes through the noise reduction port 10, thereby reducing the flow velocity and reducing the mutual collision between airflows, further reducing wind noise.

[0044] The dust cup cover 22 is installed at the opening of the dust cup 2 through the cooperation of the fastener 23 and the latch 24. When the dust cup cover 22 is on the opening of the dust cup 2, the hook 28 hooks onto the latch 24, achieving a snap-fit ​​fixation of the dust cup cover 22 at the opening of the dust cup 2. At the same time, the latch 31 on the auxiliary latch head 30 automatically engages into the latch hole 33 of the auxiliary latch groove 32, thereby further improving the fixation effect of the dust cup cover 22 at the opening of the dust cup 2. When it is necessary to open the dust cup cover 22, the operator can press the button 26, causing the fastener 23 to rotate under the transmission action of the pressure plate 27, and driving the hook 28 to rotate synchronously, causing the hook 28 to disengage from the latch 24. At the same time, the latch 31 will also disengage from the latch hole 33, thereby releasing the snap-fit ​​state of the dust cup cover 22. At this time, the operator can easily open the dust cup cover 22.

Claims

1. A silent, noise-reducing vacuum cleaner structure, characterized in that, Includes a base (1), on which a dust cup (2) is mounted. The dust cup (2) is provided with a suction pipe (3) and a negative pressure pipe (4). One end of the suction pipe (3) is fitted with an insertion tube (5), and the other end of the suction pipe (3) is connected to the interior of the dust cup (2). One end of the negative pressure pipe (4) is connected to the interior of the dust cup (2), and a filter cover (6) is installed at one end of the negative pressure pipe (4). The base (1) also has The filter cover (6) is equipped with a suction device, and the other end of the negative pressure pipe (4) is connected to the suction device. Several guide vanes (7) are provided on the side wall of the filter cover (6). The guide vanes (7) are evenly distributed. The filter cover (6) is funnel-shaped. The opening of the filter cover (6) is snap-fitted to the port of the negative pressure pipe (4). The guide vanes (7) are arc-shaped. The guide vanes (7) are arranged in a ring about the geometric center line of the filter cover (6) and are evenly spaced. The air guide blade (7) is fixed at one end near the opening of the filter cover (6), and the other end of the air guide blade (7) is fixed at the bottom of the filter cover (6). The width of the air guide blade (7) gradually decreases from one end to the other end. The dust cup (2) is provided with an inner cylinder (8). The negative pressure pipe (4) is located inside the inner cylinder (8). The other end of the negative pressure pipe (4) is located on the bottom surface of the inner cylinder (8). The suction pipe (3) is located outside the inner cylinder (8). The other end of the suction pipe (3) is located on the side wall of the inner cylinder (8) and near the bottom of the inner cylinder (8). The bottom surface of the inner cylinder (8) is provided with a spiral backflow plate (9). The spiral backflow plate (9) is placed outside the negative pressure pipe (4). The height of one end of the spiral backflow plate (9) is higher than the height of the other end of the spiral backflow plate (9). The other end of the spiral backflow plate (9) is placed at the other end of the suction pipe (3).

2. The structure of a silent and noise-reducing vacuum cleaner according to claim 1, characterized in that, The surface of the dust cup (2) is provided with a noise reduction port (10) connected to the negative pressure pipe (4). The noise reduction port (10) is horn-shaped. The diameter of one end of the noise reduction port (10) is smaller than the diameter of the other end of the noise reduction port (10). The other end of the negative pressure pipe (4) is connected to one end of the noise reduction port (10). The base (1) is provided with an air duct (11). The other end of the noise reduction port (10) is connected to the suction device through the air duct (11).

3. A silent and noise-reducing vacuum cleaner structure according to any one of claims 1-2, characterized in that, The dust cup (2) is provided with a dust cup HEPA holder (12), which is installed at the port of the other end of the noise reduction port (10). The dust cup (2) is provided with a foolproof bracket (13), one end of which is installed on the dust cup (2) and hinged thereto. The surface of the dust cup (2) is provided with a foolproof bracket movable hole (14) that matches the other end of the foolproof bracket (13). The foolproof bracket movable hole (14) is located on the side of the noise reduction port (10), and the other end of the foolproof bracket (13) is movably connected to the foolproof bracket movable hole (14).

4. The structure of a silent and noise-reducing vacuum cleaner according to claim 3, characterized in that, The suction device includes a suction fan (15) installed inside the base (1). The suction side of the suction fan (15) faces the noise reduction port (10). An air outlet HEPA frame (16) is installed on the air outlet side of the suction fan (15). An air outlet plate (17) is provided on the side wall of the base (1). The air outlet plate (17) faces the air outlet HEPA frame (16). The air outlet plate (17) and the base (1) are snapped together. An air outlet latch (18) is slidably connected on the air outlet plate (17). A latch insert (19) is provided on the air outlet latch (18). A slot (20) matching the latch insert (19) is provided on the base (1).

5. A silent, noise-reducing vacuum cleaner structure according to any one of claims 1-2, characterized in that, A handle (21) is installed on the base (1). One end of the handle (21) is hinged to the base (1). A dust cup cover (22) matching the opening of the dust cup (2) is fixed on the other end of the handle (21). A buckle (23) is movably connected to the handle (21). A switch connected to the buckle (23) is provided on the surface of the handle (21). A buckle (24) matching the buckle (23) is provided on the base (1).

6. The structure of a silent, noise-reducing vacuum cleaner according to claim 5, characterized in that, The handle (21) has a button through hole (25) on its surface. The switch includes a button (26). The button (26) is placed in the button through hole (25) and slidably connected to it. The buckle (23) is installed inside the handle (21) and hinged to it. One end of the buckle (23) is provided with a pressure plate (27) that contacts the button (26). The other end of the buckle (23) is provided with a hook (28) that matches the buckle position (24). The hook (28) and the pressure plate (27) are set at an obtuse angle. The side wall of the handle (21) is provided with a hook avoidance hole (29). The hook (28) passes through the hook avoidance hole (29) and is placed outside the handle (21).

7. The structure of a silent and noise-reducing vacuum cleaner according to claim 6, characterized in that, An auxiliary locking head (30) is provided at the edge of the dust cup cover (22). A locking post (31) is provided on both sides of the auxiliary locking head (30). An auxiliary locking groove (32) matching the auxiliary locking head (30) is provided on the side wall of the dust cup (2) at its opening. A locking hole (33) matching the locking post (31) is provided on both sides of the auxiliary locking groove (32). A transition chamfer is provided at the end of the locking post (31) on the side close to the locking hole (33).

8. A silent and noise-reducing vacuum cleaner structure according to any one of claims 1-2, characterized in that, The base (1) is provided with a tube head (34), the tube head (34) is snapped into the base (1), the tube head (34) is placed between the suction pipe (3) and the tube (5), one end of the tube head (34) corresponds to one end of the suction pipe (3) and a tube head sealing ring (35) is provided between them, one end of the tube head (34) and one end of the suction pipe (3) are sealed and connected by the tube head sealing ring (35), the other end of the tube head (34) is snapped into one end of the tube (5), the other end of the tube (5) is provided with a bend protective sleeve (36), and the bend protective sleeve (36) is snapped into the tube (5).

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