Wind-direction-variable dust collector main machine structure

Abstract

The invention discloses a wind-direction-variable dust collector main machine structure which comprises a dust collection mechanism, a dust cup installed at one end of the dust collection mechanism and a dust inlet pipe connected with the dust cup, and a cover plate capable of being opened and closed is installed at the end, away from the dust collection mechanism, of the dust cup. The dust collection mechanism comprises a motor used for providing suction force and a direction changing mechanism used for changing the wind direction, the dust collector main machine structure at least comprises two working states providing different wind directions so as to conduct dust collection and dust cup dust removal, and the wind directions in the dust collection state and the dust cup dust removal state are changed through the direction changing mechanism. According to the dust collector main machine structure with the variable wind direction, through cooperation of the ejector rod and the direction changing mechanism, the wind direction in the dust collector main machine can be changed through structural change without reverse rotation of the motor, the overall structural design is simple but ingenious, the dust cup cleaning frequency of a user can be effectively reduced, the dust removal efficiency is improved, and the service life is prolonged; and the user experience is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum cleaners, and in particular to a vacuum cleaner host structure with variable wind direction. Background Art

[0002] With the development of society and the improvement of people's living standards, the popularity of vacuum cleaners is also increasing. Vacuum cleaners are usually composed of a vacuum cleaner main unit, a connecting pipe and a floor brush. The vacuum cleaner main unit includes an exhaust fan, a dust cup is arranged outside the vacuum cleaner main unit, and a filter is arranged between the exhaust fan and the dust cup. The exhaust fan allows the debris and dust to pass through the floor brush through the connecting pipe and then enter the dust cup to complete dust collection and impurity collection. In this process, the exhaust motor that realizes the exhaust effect keeps unidirectional rotation to ensure that the wind direction is directed from the floor brush to the vacuum cleaner main unit.

[0003] However, almost all such vacuum cleaners have the following disadvantages: after working for a long time, the dust cup is full and needs to be removed to clean the inside, otherwise it is easy to cause the air duct to be blocked and affect the vacuuming effect, but this also causes the user to manually remove the dust cup when using it, and various dust cups are easy to interfere with cleaning tools during cleaning due to their structural limitations, which also increases the difficulty of cleaning. In some special models of vacuum cleaners, a dust cup structure that is easier to clean is also used, and attempts are made to use the reverse rotation of the exhaust fan to blow the dust cup, but changing the dust cup structure cannot effectively reduce the number of times users clean, and the reverse rotation of the exhaust fan can easily damage the motor, resulting in a reduction in its service life, and it is also easy to cause dust leakage.

[0004] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a new technical solution. Summary of the invention

[0005] The object of the present invention is to provide a vacuum cleaner main unit structure which can change the inlet and outlet wind directions through structural changes to clean the dust cup, reduce the user's manual cleaning frequency, reduce the cleaning difficulty, and has a longer service life and is not easy to leak dust.

[0006] In order to solve the above technical problems, the present invention provides a vacuum cleaner host structure with variable wind direction, and the specific technical solution is as follows: A vacuum cleaner host structure with variable wind direction, comprising a dust suction mechanism, a dust cup installed at one end of the dust suction mechanism, and a dust inlet pipe connected to the dust cup, wherein an openable and closable cover is installed at one end of the dust cup away from the dust suction mechanism, the dust suction mechanism comprises a motor for providing suction force and a direction-changing mechanism for changing the wind direction, the vacuum cleaner host structure comprises at least two working states providing different wind directions for respectively performing dust suction and dust cup dust removal, and the wind directions in the dust suction state and the dust cup dust removal state are changed by the direction-changing mechanism; The vacuum cleaner main body structure is also equipped with at least one push rod that can move in a direction parallel to the axis of the vacuum cleaner main body structure. One end of the push rod extends to the outside of the cover plate, and the other end is connected to the changing mechanism. After the push rod is subjected to pressure in a direction parallel to the cover plate pointing to the dust collection mechanism, it drives the changing mechanism to move to change the wind direction in the main body structure.

[0007] Preferably, the vacuum cleaner main body structure is placed in a cup-shaped base in the dust removal state, a dust bag is provided in the base, and the dust cup has a cover with one end opened and extending into the dust bag in the base; a synapse part is fixedly provided in the base, the synapse part is adapted to the position of the push rod, and the synapse part is located on the movement path of the push rod so as to lift the push rod and drive the changing mechanism to move when the vacuum cleaner main body structure is inserted into the base.

[0008] Preferably, the dust collecting mechanism includes an outer shell, the motor is fixedly installed inside the outer shell, the direction changing mechanism includes an upper cover, a support plate and a plurality of connecting rods respectively connected and fixed to the upper cover and the support plate at both ends, and the direction changing mechanism is movably installed inside the outer shell, the end of the motor close to the dust cup is the air outlet end, the other end of the motor is the air inlet end, the upper cover and the support plate are located outside the air inlet end of the motor, the support plate is located outside the air outlet end of the motor, the connecting rod is located on the outer peripheral side of the motor, one end of the outer shell is open and sealedly connected to the end of the dust cup away from the cover plate, and the other end is adapted to the upper cover in the direction changing mechanism; the upper cover is integrally connected with a supporting ear plate, and the supporting ear plate is connected and fixed to the end of the top rod. .

[0009] Preferably, an outer cover shell is fixedly provided on the inner side of the outer shell, and the direction-changing mechanism also includes a direction-changing bottom cover fixedly provided inside the outer shell and located on the outer side of the support plate, a ventilation hole is provided on the direction-changing bottom cover, and the direction-changing bottom cover is coaxially provided with the support plate. The support plate can be driven by the connecting rod to approach or move away from the direction-changing bottom cover, and the size of the support plate covers the ventilation hole, the outer cover shell wraps the motor from the circumference, and the two ends of the outer cover shell are respectively fixed and sealed to the end of the outer shell away from the dust cup and the direction-changing bottom cover, a plurality of ventilation holes are provided on the outer cover shell, and an inner cover shell is fixedly provided on the inner side of the outer cover shell, one end of the inner cover shell is provided around the circumference of the motor air inlet end, and the inner cover shell and the click air inlet end are sealed by an annular seal.

[0010] Preferably, a plurality of air holes are provided at one end of the outer shell away from the dust cup, the air holes comprising a central air hole located at the center of the end of the outer shell and a plurality of peripheral air holes evenly arranged around the central air hole, the position of the central air hole is adapted to the air inlet end of the motor, and the position of the peripheral air holes is adapted to the gap position between the inner cover shell and the outer cover shell.

[0011] Preferably, the upper cover is fixedly provided with a plurality of direction-changing parts pointing to the inside of the outer shell, the direction-changing parts include a main direction-changing part and a plurality of auxiliary direction-changing parts evenly arranged around the main direction-changing part, the main direction-changing part is adapted to the central air hole, the auxiliary direction-changing part is adapted to the peripheral air hole, and one end of the main direction-changing part is inserted into the inner cover shell through the annular gap formed by the inner cover shell around the air inlet end of the motor.

[0012] Preferably, the main changing part and the auxiliary changing part are both tubular with through holes in the side walls, and the through holes are located in a section of the side wall of the changing part close to the upper cover so that the side wall of the changing part forms a non-ventilated solid part and a ventilated hollow part, the end of the auxiliary changing part pointing to the inside of the outer shell and the end of the main changing part pointing to the upper cover are closed, the connecting end of the auxiliary changing part and the upper cover and the end of the main changing part pointing to the inside of the outer shell are open, in the dust suction state, the upper cover contacts the end of the outer shell and the hollow part is located inside the outer shell, and in the dust cup dust removal state, the upper cover is away from the end of the outer shell and the solid part of the auxiliary changing part closes the surrounding air holes, and the solid part of the main changing part closes the gap between the inner cover and the upper cover.

[0013] Preferably, the redirecting bottom cover is hollow, and the two end faces of the redirecting bottom cover respectively point to the inside of the outer shell and the inside of the dust cup, and a plurality of vents at different positions are respectively opened on the two end faces of the redirecting bottom cover to change the wind direction convergence point.

[0014] Preferably, a multi-cone filter is installed in the dust cup, and a filter screen is installed at the end of the dust cup connected to the dust suction mechanism. The multi-cone filter divides the interior of the dust cup into a filter chamber inside the multi-cone filter and a dust collecting chamber located between the multi-cone filter and the dust cup. The filter chamber is connected to the air outlet of the reversing bottom cover through the filter screen.

[0015] Preferably, a limit cover is further provided on the outer side of the upper cover, the limit cover is connected and fixed to the outer shell, and a return spring is installed between the limit cover and the upper cover.

[0016] The main structure of a vacuum cleaner with variable wind direction of the present invention has the following beneficial effects: The main structure of the vacuum cleaner with variable wind direction of the present invention can change the wind direction inside the main structure of the vacuum cleaner through structural changes without the need for motor reversal through the cooperation of the top rod and the direction-changing mechanism. The user only needs to separate the main structure from the connecting pipe, the floor brush and other components and directly insert them into the base, and the suction provided by the motor can be used to realize automatic blowing and dust removal. When the user picks up the main structure, the normal wind direction will be restored under the action of the reset spring. The overall structural design is simple but ingenious, which can effectively reduce the frequency of users cleaning the dust cup, improve the dust removal efficiency and extend its service life, thereby greatly improving the user experience. Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a vacuum cleaner host structure with variable wind direction; Figure 2 for Figure 1 A schematic diagram of the coordination between the main structure of the vacuum cleaner and the base; Figure 3 for Figure 1 A schematic cross-sectional view of the dust collection mechanism; Figure 4 for Figure 3 Structural diagram of the middle direction-changing mechanism; Figure 5 for Figure 3 A schematic diagram of the structure of the shell of the dust collection mechanism; Figure 6 for Figure 3 Schematic diagram of wind direction of the central dust collection mechanism in dust collection state; Figure 7 for Figure 3 Schematic diagram of wind direction when the central dust collection mechanism is installed on the base and the dust cup is being removed.

[0019] Among them, 1-dust suction mechanism; 11-outer shell; 111-central air hole; 112-side air holes; 12-direction changing mechanism; 121-upper cover; 122-support plate; 123-connecting rod; 124-direction changing bottom cover; 125-main direction changing part; 126-support ear plate; 127-auxiliary direction changing part; 13-limiting cover; 14-reset spring; 15-motor; 151-outer cover shell; 152-inner cover shell; 153-seal; 2-dust cup; 21-multi-cone filter; 22-filter screen; 23-cover plate; 3-dust inlet pipe; 4-top rod; 5-base; 51-dust bag; 52-synapse. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. Example

[0021] See also Figures 1 to 7A vacuum cleaner host structure with variable wind direction, comprising a dust suction mechanism 1, a dust cup 2 installed at one end of the dust suction mechanism and a dust inlet pipe 3 connected to the dust cup, wherein an openable cover plate 23 is installed at the end of the dust cup away from the dust suction mechanism, the dust suction mechanism 1 comprises a motor 15 for providing suction force and a direction-changing mechanism 12 for changing the wind direction, the vacuum cleaner host structure comprises at least two working states providing different wind directions for respectively performing dust suction and dust cup dust removal, and the wind direction in the dust suction state and the dust cup dust removal state is changed by the direction-changing mechanism; The vacuum cleaner main body structure is also equipped with at least one push rod 4 that can move in a direction parallel to the axis of the vacuum cleaner main body structure. One end of the push rod extends to the outside of the cover plate, and the other end is connected to the changing mechanism. After the push rod is subjected to pressure in a direction parallel to the cover plate pointing to the dust collection mechanism, it drives the changing mechanism to move to change the wind direction in the main body structure.

[0022] The main structure of the vacuum cleaner is placed in a cup-shaped base 5 in the dust removal state, in which a dust bag 51 is provided, and one end of the dust cup with a cover is opened and extends into the dust bag in the base; a synapse part 52 is fixedly provided in the base, the synapse part is adapted to the position of the push rod, and the synapse part is located on the movement path of the push rod so as to lift the push rod and drive the change-of-direction mechanism to move when the main structure of the vacuum cleaner is inserted into the base.

[0023] The dust collecting mechanism 1 includes an outer shell 11, the motor is fixedly installed inside the outer shell, the direction changing mechanism 12 includes an upper cover 121, a support plate 122 and a plurality of connecting rods 123 respectively connected and fixed to the upper cover and the support plate at both ends, and the direction changing mechanism is movably installed inside the outer shell, the end of the motor close to the dust cup is the air outlet end, the other end of the motor is the air inlet end, the upper cover and the support plate are located outside the air inlet end of the motor, the support plate is located outside the air outlet end of the motor, the connecting rod is located on the outer peripheral side of the motor, one end of the outer shell is open and sealedly connected to the end of the dust cup away from the cover plate 23, and the other end is adapted to the upper cover in the direction changing mechanism; the upper cover 121 is integrally connected with a supporting ear plate 126, and the supporting ear plate is connected and fixed to the end of the top rod. .

[0024] An outer cover shell 151 is fixedly arranged on the inner side of the outer shell 11, and the direction changing mechanism 12 also includes a direction changing bottom cover 124 fixedly arranged inside the outer shell and located on the outer side of the support plate, a vent is provided on the direction changing bottom cover, and the direction changing bottom cover is coaxially arranged with the support plate. The support plate can be driven by the connecting rod to approach or move away from the direction changing bottom cover, and the size of the support plate covers the vent, the outer cover shell wraps the motor 15 from the circumference, and the two ends of the outer cover shell are respectively fixed and sealed to the end of the outer shell away from the dust cup and the direction changing bottom cover, a plurality of ventilation holes are provided on the outer cover shell, and an inner cover shell 152 is fixedly arranged on the inner side of the outer cover shell, one end of the inner cover shell is arranged around the circumference of the motor air inlet end, and the inner cover shell and the click air inlet end are sealed by an annular seal 153.

[0025] The outer shell 11 is provided with a plurality of air holes at one end away from the dust cup, the air holes comprising a central air hole 111 located at the center of the end of the outer shell and a plurality of peripheral air holes 112 evenly arranged around the central air hole, the position of the central air hole being adapted to the air inlet end of the motor, and the position of the peripheral air holes being adapted to the gap position between the inner cover shell and the outer cover shell.

[0026] The upper cover 121 is fixedly provided with a plurality of direction-changing parts pointing to the inside of the outer shell, the direction-changing parts include a main direction-changing part 125 and a plurality of auxiliary direction-changing parts 127 evenly arranged around the main direction-changing part, the main direction-changing part is adapted to the central air hole, the auxiliary direction-changing part is adapted to the peripheral air holes, and one end of the main direction-changing part is inserted into the inner cover shell through the annular gap formed by the inner cover shell around the air inlet end of the motor.

[0027] The main changing part 125 and the auxiliary changing part 127 are both tubular with through holes in the side walls, and the through holes are located in a section of the side wall of the changing part close to the upper cover so that the side wall of the changing part forms a non-ventilated solid part and a ventilated hollow part, the end of the auxiliary changing part pointing to the inside of the outer shell and the end of the main changing part pointing to the upper cover are closed, the connecting end of the auxiliary changing part and the upper cover and the end of the main changing part pointing to the inside of the outer shell are open, in the dust suction state, the upper cover contacts the end of the outer shell and the hollow part is located inside the outer shell, and in the dust cup dust removal state, the upper cover is away from the end of the outer shell, the solid part of the auxiliary changing part closes the surrounding air holes, and the solid part of the main changing part closes the gap between the inner cover and the upper cover.

[0028] The reversing bottom cover 124 is hollow, and the two end surfaces of the reversing bottom cover point to the inside of the outer shell and the inside of the dust cup respectively, and a plurality of vents at different positions are respectively opened on the two end surfaces of the reversing bottom cover to change the wind direction convergence point.

[0029] A multi-cone filter 21 is installed in the dust cup 2, and a filter screen 22 is installed at one end of the dust cup connected to the dust suction mechanism. The multi-cone filter divides the interior of the dust cup into a filter chamber inside the multi-cone filter and a dust collecting chamber located between the multi-cone filter and the dust cup. The filter chamber is connected to the air outlet of the reversing bottom cover through the filter screen.

[0030] A limit cover 13 is further disposed outside the upper cover 121 . The limit cover is connected and fixed to the outer shell 11 , and a return spring 14 is installed between the limit cover and the upper cover.

[0031] It is worth noting that for the cover 23 of the dust cup, its switch can be connected to the push rod, and when the push rod is inserted into the base and moves, it drives the cover to open. Its specific structure can adopt, for example, a torsion spring to control the opening and closing of the cover, and the torsion spring is controlled by the push rod and rotates with the movement of the push rod, etc. Since such structure is relatively common in the mechanical field and is widely used, it will not be elaborated here.

[0032] The working principle of the vacuum cleaner host structure with variable wind direction in this embodiment is as follows: When the main structure is connected to the connecting pipe, floor brush and other components for dust removal, the motor is working and the main structure is in a dust suction state. At this time, the top rod 4 is not affected by external force, and the upper cover 121 is in a retracted state under the influence of the reset spring 14. At this time, the redirecting parts are all located inside the outer shell 11, and the air movement path is as follows: air enters the dust cup 2 from the dust inlet pipe 3, and enters the dust suction mechanism 1 after being filtered by the multi-cone filter 21 and the filter screen 22. At this time, the support plate covers the ventilating opening on the redirecting bottom cover 124. The size of the redirecting bottom cover is smaller than the inner diameter of the outer shell. The air enters the dust suction mechanism through the gap between the side of the redirecting bottom cover and the outer shell, and enters the outer shell through the ventilating holes on the outer cover shell 151. At this time, the solid part of the main redirecting part 125 is located in the inner cover shell, and the hollow part is located in the outer shell. The air enters the air inlet end of the motor from the hollow part of the main redirecting part and is discharged from the air outlet end of the motor. After the air outlet end is clicked to send the air out, the air is discharged to the outside of the upper cover 121 along the inside of the outer shell through the hollow part of the auxiliary redirecting part 127. For detailed path, please refer to Figure 6 .

[0033] In the other dust cup dust removal state, after the vacuum cleaner main body structure is inserted into the base 5, the top rod 4 is affected by the synapse 52 to lift the upper cover 121, and the upper cover moves to the outside of the outer shell, and drives the connecting rod 123, the support plate 122 and the various turning parts to move. At this time, the hollow parts of the main turning part and the auxiliary turning part both extend out of the end of the outer shell, and at the same time, the entity part of the main turning part covers the gap between the inner cover shell and the end of the outer shell to isolate the outflow of air, and the entity part of the auxiliary turning part closes the side air hole 112. In the working state of the motor, the air inlet end can only inhale air from the outside of the outer shell through the main turning part, and the air is discharged into the outer shell through the air outlet end of the motor and enters the dust cup from the ventilation hole of the outer shell, thereby achieving the purpose of changing the wind direction. At this time, the wind direction in the dust cup is completely opposite to that in the dust suction state. When the air blows to the dust cup, the cover plate 23 opens, and the dust in the dust cup is blown into the dust bag to achieve the effect of cleaning the dust cup.

[0034] The beneficial effects of the present invention are: through the cooperation of the top rod and the changing mechanism, the wind direction inside the vacuum cleaner host can be changed through structural changes without the need for motor reversal. The user only needs to separate the host structure from the connecting pipe, floor brush and other components and then directly insert it into the base to achieve automatic blowing and dust removal through the suction provided by the motor. When the user picks up the host structure, the normal wind direction will be restored under the action of the reset spring. The overall structural design is simple but ingenious, which can effectively reduce the frequency of users cleaning the dust cup, improve the dust removal efficiency and extend its service life, greatly improving the user experience.

[0035] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify and vary the above embodiments within the scope of the present invention.

Claims

1. A vacuum cleaner host structure with variable wind direction, characterized in that: The invention comprises a dust suction mechanism (1), a dust cup (2) mounted at one end of the dust suction mechanism, and a dust inlet pipe (3) connected to the dust cup, wherein an openable cover plate (23) is mounted at one end of the dust cup away from the dust suction mechanism, the dust suction mechanism (1) comprises a motor (15) for providing suction force and a direction-changing mechanism (12) for changing wind direction, the main structure of the vacuum cleaner comprises at least two working states providing different wind directions for respectively performing dust suction and dust cup dust removal, and the wind direction in the dust suction state and the dust cup dust removal state is changed by the direction-changing mechanism; The vacuum cleaner main body structure is also provided with at least one push rod (4) which can move in a direction parallel to the axis of the vacuum cleaner main body structure, one end of the push rod extends outward from the cover plate, and the other end is connected to the direction-changing mechanism. When the push rod is subjected to pressure in a direction parallel to the cover plate pointing to the dust collecting mechanism, it drives the direction-changing mechanism to move so as to change the wind direction in the main body structure.

2. The main structure of the vacuum cleaner with variable wind direction according to claim 1, characterized in that: The vacuum cleaner main body structure is placed in a cup-shaped base (5) in a dust removal state, a dust bag (51) is provided in the base, and the dust cup has a cover with one end opened and extending into the dust bag in the base; a synapse portion (52) is fixedly provided in the base, the synapse portion is adapted to the position of the push rod, and the synapse portion is located on the movement path of the push rod so as to lift the push rod and drive the direction-changing mechanism to move when the vacuum cleaner main body structure is inserted into the base.

3. The main structure of the vacuum cleaner with variable wind direction according to claim 1 or 2, characterized in that: The dust suction mechanism (1) comprises an outer shell (11), the motor is fixedly mounted inside the outer shell, the direction-changing mechanism (12) comprises an upper cover (121), a support plate (122) and a plurality of connecting rods (123) respectively connected and fixed to the upper cover and the support plate at both ends, and the direction-changing mechanism is movably mounted inside the outer shell, the end of the motor close to the dust cup is the air outlet end, and the other end of the motor is the air inlet end, the upper cover and the support plate are located outside the air inlet end of the motor, the support plate is located outside the air outlet end of the motor, the connecting rod is located on the outer peripheral side of the motor, one end of the outer shell is open and sealedly connected to the end of the dust cup away from the cover plate (23), and the other end is adapted to the upper cover in the direction-changing mechanism; the upper cover (121) is integrally connected with a supporting ear plate (126), and the supporting ear plate is connected and fixed to the end of the top rod.

4. The main structure of the vacuum cleaner with variable wind direction according to claim 3, characterized in that: An outer cover shell (151) is fixedly arranged on the inner side of the outer shell (11), and the direction-changing mechanism (12) further includes a direction-changing bottom cover (124) fixedly arranged inside the outer shell and located outside the support plate, a ventilation hole is provided on the direction-changing bottom cover, and the direction-changing bottom cover is coaxially arranged with the support plate. The support plate can approach or move away from the direction-changing bottom cover under the drive of the connecting rod, and the size of the support plate covers the ventilation hole. The outer cover shell wraps the motor (15) from the circumferential side, and the two ends of the outer cover shell are respectively fixed and sealed to the end of the outer shell away from the dust cup and the direction-changing bottom cover, a plurality of ventilation holes are provided on the outer cover shell, and an inner cover shell (152) is fixedly arranged on the inner side of the outer cover shell, one end of the inner cover shell is arranged around the circumferential side of the motor air inlet end, and the inner cover shell and the click air inlet end are sealed by an annular seal (153).

5. The main structure of the vacuum cleaner with variable wind direction according to claim 4, characterized in that: The outer shell (11) has a plurality of air holes at one end away from the dust cup, the air holes comprising a central air hole (111) located at the center of the end of the outer shell and a plurality of peripheral air holes (112) evenly arranged around the central air hole, the position of the central air hole being adapted to the air inlet end of the motor, and the position of the peripheral air holes being adapted to the gap position between the inner cover shell and the outer cover shell.

6. The main structure of the vacuum cleaner with variable wind direction according to claim 5, characterized in that: The upper cover (121) is fixedly provided with a plurality of direction-changing parts pointing to the inside of the outer shell, the direction-changing parts comprising a main direction-changing part (125) and a plurality of auxiliary direction-changing parts (127) uniformly arranged around the main direction-changing part, the main direction-changing part is adapted to the central air hole, the auxiliary direction-changing parts are adapted to the peripheral air holes, and one end of the main direction-changing part is inserted into the inner cover shell through an annular gap formed by the inner cover shell around the air inlet end of the motor.

7. The main structure of the vacuum cleaner with variable wind direction according to claim 6, characterized in that: The main turning part (125) and the auxiliary turning part (127) are both tubular with through holes in the side walls, and the through holes are located in a section of the side wall of the turning part close to the upper cover so that the side wall of the turning part forms a non-ventilated solid part and a ventilated hollow part, the end of the auxiliary turning part pointing to the interior of the outer shell and the end of the main turning part pointing to the upper cover are closed, the connecting end of the auxiliary turning part and the upper cover and the end of the main turning part pointing to the interior of the outer shell are open, in the dust suction state, the upper cover contacts the end of the outer shell and the hollow part is located inside the outer shell, and in the dust cup dust removal state, the upper cover is away from the end of the outer shell, the solid part of the auxiliary turning part closes the peripheral air holes, and the solid part of the main turning part closes the gap between the inner cover and the upper cover.

8. The main structure of the vacuum cleaner with variable wind direction according to claim 3, characterized in that: The changeable bottom cover (124) is hollow, and the two end surfaces of the changeable bottom cover point toward the interior of the outer shell and the interior of the dust cup respectively, and a plurality of ventilation holes at different positions are respectively provided on the two end surfaces of the changeable bottom cover to change the wind direction convergence point.

9. The main structure of the vacuum cleaner with variable wind direction according to claim 8, characterized in that: The dust cup (2) is installed with a multi-cone filter (21), and a filter screen (22) is installed at one end of the dust cup connected to the dust suction mechanism. The multi-cone filter divides the interior of the dust cup into a filter chamber inside the multi-cone filter and a dust collecting chamber located between the multi-cone filter and the dust cup. The filter chamber is connected to the air outlet of the reversing bottom cover via the filter screen.

10. The main structure of the vacuum cleaner with variable wind direction according to claim 2, characterized in that: A limit cover (13) is also provided on the outside of the upper cover (121), the limit cover is connected and fixed to the outer shell (11), and a return spring (14) is installed between the limit cover and the upper cover.

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