A vacuum cleaner

Abstract

The present invention discloses a vacuum cleaner, which belongs to the technical field of cleaning equipment. The vacuum cleaner comprises an air inlet, an air inlet pipe and a dust cup, the dust cup having a dust cup inlet, and a dust shield plate is arranged at the connection point between the air inlet pipe and the dust cup inlet, and the dust shield plate can move between an open position and a closed position; the dust shield plate comprises a cover plate and a rotating shaft arranged on one side of the cover plate, the rotating shaft is rotatably connected to the inner wall of the air inlet pipe, and the other side of the cover plate can selectively abut against the inner wall of the air inlet pipe; when the vacuum cleaner is turned on, the dust shield plate is impacted by the airflow and is located in the open position, the air inlet pipe is connected with the dust cup inlet, and dust collection is not affected; when the air inlet is facing upwards, the dust shield plate is in the open position under the action of gravity, at this time the air inlet pipe is connected with the dust cup inlet, and no dust will leak from the dust cup inlet; when the vacuum cleaner is turned off and the air inlet is facing downwards, the dust shield plate is in the closed position under the action of its own gravity, the air inlet pipe is not connected with the dust cup inlet, and dust is prevented from leaking from the dust cup inlet.

Description

Technical Field

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

[0002] A vacuum cleaner is a common cleaning tool. The cleaning principle of a vacuum cleaner is to use suction to remove dust and dry dirt, such as threads, paper scraps, hair, etc., from floors, carpets, walls, furniture and other surfaces. Its main components are a vacuum pump, a filter bag (or filter), a hose, an extension tube and nozzles of various shapes.

[0003] The dust cup is a dust collecting device in the vacuum cleaner, and dust enters the dust cup through the air inlet pipe. In an upright vacuum cleaner or a handheld vacuum cleaner, when the suction port is facing downward, dust easily leaks from the entrance of the dust cup when the vacuum cleaner is not in use. Summary of the invention

[0004] The object of the present invention is to provide a vacuum cleaner to solve the technical problem in the prior art that dust is easily leaked from the inlet of the dust cup when the suction port is facing downward.

[0005] As conceived above, the technical solution adopted by the present invention is:

[0006] A vacuum cleaner comprises an air inlet, an air inlet pipe and a dust cup, the dust cup having a dust cup inlet, a dust shield plate being arranged at the connection point between the air inlet pipe and the dust cup inlet, and the dust shield plate being movable between an open position and a closed position; the dust shield plate comprises a cover plate and a rotating shaft arranged on one side of the cover plate, the rotating shaft being rotatably connected to the inner wall of the air inlet pipe, and the other side of the cover plate being selectively abutted against the inner wall of the air inlet pipe; when the vacuum cleaner is turned on or the air inlet is facing upward, the dust shield plate is located in the open position, and the air inlet pipe is connected to the dust cup inlet; when the vacuum cleaner is turned off and the air inlet is facing downward, the dust shield plate is located in the closed position, and the air inlet pipe is not connected to the dust cup inlet.

[0007] Wherein, a first connector and a second connector are respectively provided at both ends of the rotating shaft, the first connector is rotatably connected to the first wall of the air intake pipe, and the second connector is rotatably connected to the second wall of the air intake pipe.

[0008] Wherein, a first insertion port corresponding to the first connector is formed on the first wall of the air intake pipe, and a second insertion port corresponding to the second connector is formed on the second wall of the air intake pipe.

[0009] Wherein, the first insertion opening and the second insertion opening are both blind holes.

[0010] The rotating shaft abuts against the third wall of the air intake pipe, the side edge of the cover plate away from the rotating shaft can selectively abut against the fourth wall of the air intake pipe, and the two side edges of the cover plate perpendicular to the rotating shaft respectively abut against the first wall and the second wall of the air intake pipe.

[0011] Wherein, a distance between a side edge of the cover plate away from the rotation axis and the rotation axis is greater than a distance between the third wall and the fourth wall of the air inlet pipe.

[0012] Wherein, a plurality of reinforcing ribs are arranged between the rotating shaft and the cover plate.

[0013] Wherein, a weight-increasing block is arranged on one side of the cover plate away from the rotating shaft.

[0014] Wherein, a thickened portion is arranged on one side of the cover plate away from the rotating shaft.

[0015] Wherein, the inner wall at the entrance of the dust cup protrudes outward to form a pre-rotation structure.

[0016] Beneficial effects of the present invention:

[0017] The vacuum cleaner proposed in the present invention is provided with a dust shield at the connection between the air inlet pipe and the dust cup inlet. When the vacuum cleaner is turned on, the dust shield is impacted by the airflow and is located in the open position, the air inlet pipe is connected with the dust cup inlet, and there is no obstruction at the air inlet pipe and the dust cup inlet, so that the dust suction airflow enters the dust cup from the air inlet pipe unobstructed; when the air inlet is facing upward, the dust shield is located in the open position under the action of gravity, at which time the air inlet pipe is connected with the dust cup inlet, and no dust will leak from the dust cup inlet; when the vacuum cleaner is turned off and the air inlet is facing downward, the dust shield is not impacted by the airflow and is located in the closed position under the action of its own gravity, the air inlet pipe is not connected with the dust cup inlet, and dust is prevented from leaking from the dust cup inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the vacuum cleaner provided by the present invention;

[0019] Figure 2 is a cross-sectional view of the vacuum cleaner provided by the present invention, with the dust shield in an open position;

[0020] Figure 3 yes Figure 2 A magnified image of point A;

[0021] Figure 4 is a cross-sectional view of the vacuum cleaner provided by the present invention, with the dust shield being in a closed position;

[0022] Figure 5 yes Figure 4 A magnified view of point B;

[0023] Figure 6The dust shield structure provided by the present invention is schematically shown in FIG. Figure 1 ;

[0024] Figure 7 The dust shield structure provided by the present invention is schematically shown in FIG. Figure 2 ;

[0025] Figure 8 is a partial cross-sectional schematic diagram of the vacuum cleaner provided by the present invention;

[0026] Fig. 9 yes Figure 8 Enlarged view of point C;

[0027] Fig.10 It is a partial structural sectional view of the vacuum cleaner provided by the present invention.

[0028] In the figure:

[0029] 1. Air inlet; 2. Air inlet pipe; 3. Dust cup; 4. Dust shield; 5. Handle; 6. Vacuum generator; 7. Battery pack;

[0030] 21. first wall; 22. second wall; 23. third wall; 24. fourth wall; 25. first insertion port; 26. second insertion port;

[0031] 31. Dust cup inlet; 32. Pre-spin structure;

[0032] 41. Cover plate; 42. Rotation axis; 43. First connector; 44. Second connector; 45. Reinforcing rib. DETAILED DESCRIPTION

[0033] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, not all.

[0034] See also Figure 1 The embodiment of the present invention provides a vacuum cleaner, comprising an air inlet 1, an air inlet pipe 2 and a dust cup 3 which are connected in sequence, and dust is sucked into the air inlet pipe 2 from the air inlet 1 and stored in the dust cup 3. The vacuum cleaner also includes a handle 5, a vacuum generator 6 and a battery pack 7, wherein the handle 5 is convenient for holding the vacuum cleaner, the battery pack 7 supplies power to the vacuum generator 6, and the vacuum generator 6 provides suction force.

[0035] See also Figures 2 to 5 , Figure 2 and Figure 4 yes Figure 1 A top view of the vacuum cleaner in FIG. Figure 2 and Figure 4 As shown, the dust cup 3 is cylindrical, and the outlet direction of the air inlet pipe 2 is roughly tangent to the edge of the dust cup 3 to reduce the impact of airflow. The dust cup 3 has a dust cup inlet 31, one end of the air inlet pipe 2 is connected to the air inlet 1, and the other end of the air inlet pipe 2 is connected to the dust cup inlet 31. A dust shield 4 is provided at the connection between the air inlet pipe 2 and the dust cup inlet 31 to shield the dust cup inlet 31 as needed. Figure 2 and Figure 4 As shown, the dust shield 4 can move between an open position and a closed position, wherein Figure 2 The dust shield 4 is shown in the open position. Figure 4 The dust shield 4 is shown in the closed position. When the dust shield 4 is in the open position, the air inlet pipe 2 is connected to the dust cup inlet 31; when the dust shield 4 is in the closed position, the air inlet pipe 2 is not connected to the dust cup inlet 31.

[0036] In order to achieve the above switching, one side of the dust shield 4 is rotatably connected to the inner wall of the air intake pipe 2, so that the other side of the dust shield 4 can selectively abut against the inner wall of the air intake pipe 2. When the other side of the dust shield 4 abuts against the inner wall of the air intake pipe 2, the dust shield 4 is in a closed position, shielding the dust cup inlet 31 to prevent dust leakage. The power for the rotation of the dust shield 4 comes from the negative pressure generated by the vacuum generator 6 or the gravity of the dust shield 4 itself, omitting other power mechanisms and transmission mechanisms, saving space and energy.

[0037] See also Figure 3 , which is Figure 2 The enlarged view at A in the middle shows that the dust shield 4 is in the open position. When the vacuum cleaner is turned on, the vacuum generator 6 draws a vacuum, generating negative pressure in the dust cup 3, and the dust shield 4 is deflected to the open position. The air inlet pipe 2 is connected to the dust cup inlet 31, and there is no obstruction between the air inlet pipe 2 and the dust cup inlet 31, so that the dust suction airflow enters the dust cup 3 unimpeded from the air inlet pipe 2; when the air inlet 1 is facing upward, the dust shield 4 is in the open position under the action of gravity, and at this time the air inlet pipe 2 is connected to the dust cup inlet 31, and no dust will leak from the dust cup inlet 31. See Figure 5 , which is Figure 4 The enlarged view at B in the middle shows that the dust shield 4 is in the closed position. When the vacuum cleaner is turned off, the vacuum generator 6 stops vacuuming, and the negative pressure in the dust cup 3 disappears. When the air inlet 1 is facing downward, the dust shield 4 is in the closed position under the action of its own gravity, and the air inlet pipe 2 and the dust cup inlet 31 are closed to prevent dust from leaking from the dust cup inlet 31.

[0038] See also Figure 6 and Figure 7, which respectively show the structure of the dust shield 4. Specifically, the dust shield 4 is roughly rectangular, and includes a cover plate 41 and a rotating shaft 42 arranged on a first side of the cover plate 41. The two ends of the rotating shaft 42 are respectively provided with a first connector 43 and a second connector 44. The first connector 43 and the second connector 44 are respectively connected to the inner wall of the intake pipe 2 (see Fig. 9 ), so that the cover plate 41 switches between an open position that does not block the dust cup inlet 31 and a closed position that blocks the dust cup inlet 31. In particular, a plurality of reinforcing ribs 45 are provided between the rotating shaft 42 and the cover plate 41 to ensure structural strength and increase stability between the rotating shaft 42 and the cover plate 41.

[0039] See also Figure 8 and Fig. 9 , which shows the connection between the dust shield 4 and the air intake pipe 2. Figure 8 and Fig. 9 As shown, the two ends of the rotating shaft 42 are rotatably connected to the first wall 21 and the second wall 22 of the intake pipe 2 respectively, the rotating shaft 42 abuts against the third wall 23 of the intake pipe 2, the second side of the cover plate 41 away from the rotating shaft 42 can be selectively abutted against the fourth wall 24 of the intake pipe 2, and the two side edges of the cover plate 41 perpendicular to the rotating shaft 42 abut against the first wall 21 and the second wall 22 respectively.

[0040] The cover plate 41 can rotate around the rotation axis 42 to open or close the dust cup inlet 31. The distance between the side of the cover plate 41 away from the rotation axis 42 and the rotation axis 42 is greater than the distance between the third wall 23 and the fourth wall 24 of the air inlet pipe 2, ensuring that the cover plate 41 is in close contact with the inner wall of the air inlet pipe 2.

[0041] Specifically, the first connector 43 and the second connector 44 are rotatably connected to the first wall 21 and the second wall 22 of the intake pipe 2, respectively. The first connector 43 is rotatably connected to the first wall 21 of the intake pipe 2, and the second connector 44 is rotatably connected to the second wall 22 of the intake pipe 2. The first wall 21 of the intake pipe 2 is provided with a first insertion port 25 corresponding to the first connector 43, and the second wall 22 of the intake pipe 2 is provided with a second insertion port 26 corresponding to the second connector 44.

[0042] In particular, the cover plate 41 is relatively thin and has a certain elastic deformation capability. During installation, the first connector 43 is first inserted into the first insertion port 25, and then the second connector 44 is inserted into the second insertion port 26 through the elastic deformation of the cover plate 41, so that the two sides of the cover plate 41 perpendicular to the rotation axis 42 are respectively in contact with the first wall 21 and the second wall 22 of the intake pipe 2.

[0043] The installation of the dust shield 4 does not require screws or other fixing structures, which simplifies the structure, reduces space occupation, avoids blocking the air path, and reduces costs. The dust shield 4 can be used in narrow and long air ducts where there is insufficient air or no space for other fixing structures.

[0044] The dust shield 4 does not require a reset part to rotate between the open position and the closed position. When the vacuum cleaner is turned on, the dust shield 4 is impacted by the airflow and is located in the open position; when the air inlet 1 is facing upward, the dust shield 4 is located in the open position under the action of gravity; when the vacuum cleaner is turned off and the air inlet 1 is facing downward, the dust shield 4 is not impacted by the airflow and is located in the closed position under the action of its own gravity.

[0045] In this embodiment, both the first insertion opening 25 and the second insertion opening 26 are blind holes, which can effectively prevent the inflexible rotation caused by dust entering.

[0046] In order to make the dust shield 4 easier to close under the action of gravity, a weight block or a thickened portion is provided on the side of the cover plate 41 away from the rotating shaft 42, so that the center of gravity of the cover plate 41 is offset to the side away from the rotating shaft 42. From the perspective of force, the dust shield 4 is easier to close, avoiding dust from being blocked in the dust cup inlet 31.

[0047] See also Fig.10 In order to prevent large particles of garbage (such as paper balls) from being blocked at the dust cup inlet 31, the inner wall of the dust cup inlet 31 is protruded outward to form a pre-rotation structure 32 to increase the air duct space. This can not only improve the dust removal efficiency of the dust cup 3, but also increase the width of the air duct here. When large pieces of garbage enter the dust cup 3 from the air inlet pipe 2, it will be relatively smooth, and the dust cup 3 is not easy to be blocked; and because the air duct space is increased, the dust shield 4 can be widened synchronously, so that the center of gravity of the cover plate 41 is offset to the side away from the rotating shaft 42, which is easier to close under the action of gravity.

[0048] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A vacuum cleaner, comprising an air inlet (1), an air inlet pipe (2) and a dust cup (3), wherein the dust cup (3) has a dust cup inlet (31), characterized in that: A dust shield (4) is provided at the connection point between the air inlet pipe (2) and the dust cup inlet (31), and the dust shield (4) can move between an open position and a closed position; The inner wall at the dust cup inlet (31) protrudes outward to form a pre-swirl structure (32) to increase the air duct space, so that large pieces of garbage enter the dust cup (3) from the air inlet pipe (2) to prevent blockage at the dust cup inlet (31); The dust shield (4) comprises a cover plate (41) and a rotating shaft (42) arranged on one side of the cover plate (41); the rotating shaft (42) is rotatably connected to the inner wall of the air intake pipe (2); the other side of the cover plate (41) can selectively abut against the inner wall of the air intake pipe (2); the other side of the cover plate (41) can selectively abut against the inner wall forming the pre-rotation structure (32); the center of gravity of the cover plate (41) is offset to a side away from the rotating shaft (42); When the vacuum cleaner is turned on or the air inlet (1) is facing upward, the dust shield (4) is located in the open position, and the air inlet pipe (2) is connected to the dust cup inlet (31); when the vacuum cleaner is turned off and the air inlet (1) is facing downward, the dust shield (4) is located in the closed position, and the air inlet pipe (2) is not connected to the dust cup inlet (31).

2. The vacuum cleaner according to claim 1, characterized in that: A first connector (43) and a second connector (44) are respectively provided at both ends of the rotating shaft (42); the first connector (43) is rotatably connected to the first wall (21) of the intake pipe (2), and the second connector (44) is rotatably connected to the second wall (22) of the intake pipe (2).

3. The vacuum cleaner according to claim 2, characterized in that: A first insertion opening (25) corresponding to the first connector (43) is provided on the first wall (21) of the air intake pipe (2), and a second insertion opening (26) corresponding to the second connector (44) is provided on the second wall (22) of the air intake pipe (2).

4. The vacuum cleaner according to claim 3, characterized in that: The first insertion opening (25) and the second insertion opening (26) are both blind holes.

5. The vacuum cleaner according to claim 1, characterized in that: The rotating shaft (42) abuts against the third wall (23) of the air intake pipe (2), and a side edge of the cover plate (41) away from the rotating shaft (42) can be selectively abutted against the fourth wall (24) of the air intake pipe (2), and two side edges of the cover plate (41) perpendicular to the rotating shaft (42) respectively abut against the first wall (21) and the second wall (22) of the air intake pipe (2).

6. The vacuum cleaner according to claim 5, characterized in that: The distance between a side edge of the cover plate (41) away from the rotation axis (42) and the rotation axis (42) is greater than the distance between the third wall (23) and the fourth wall (24) of the air inlet pipe (2).

7. The vacuum cleaner according to claim 1, characterized in that: A plurality of reinforcing ribs (45) are provided between the rotating shaft (42) and the cover plate (41).

8. The vacuum cleaner according to claim 1, characterized in that: A weight-increasing block is provided on one side of the cover plate (41) away from the rotating shaft (42).

9. The vacuum cleaner according to claim 1, characterized in that: A thickened portion is provided on one side of the cover plate (41) away from the rotating shaft (42).

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