Dust cup and handheld vacuum cleaner

Abstract

The utility model discloses a dust cup and a handheld vacuum cleaner thereof, comprising: a barrel, the barrel having a first end and a second end, the first end being provided with a bottom cover, the barrel being provided with a filter element, a spiral air outlet structure, and a top cover connected to the second end, which are arranged in sequence along the axial direction; wherein, along the direction toward the spiral air outlet structure, the filter element has a gradually increasing cross-section, and at the edge of the filter element having the largest cross-section, a blocking cover extending along the direction toward the bottom cover is formed; the utility model can solve the problem that there is a lack of structure in the dust cup to block the rising vortex airflow, thereby causing the vortex airflow in the dust cup to be relatively close to the air inlet, thereby affecting the adsorption of dust in the airflow.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum cleaners, in particular to a dust cup and a handheld vacuum cleaner thereof. Background Art

[0002] The dust cup is the dust collecting device of the vacuum cleaner. A commonly used vacuum cleaner dust cup is provided with a dust cup core. The dust-laden airflow enters the dust cup in the direction toward the side wall of the dust cup body, and rotates in the dust cup to form a vortex airflow, so that the dust particles in the airflow are thrown onto the side wall of the dust cup under the action of centrifugal force, and then fall to the bottom of the dust cup, achieving the effect of cyclone dust removal. The airflow that has passed the cyclone dust removal flows through the filter element in the dust cup and is filtered again, and then discharged from the air outlet.

[0003] There is no object outside the filter in the dust cup of a traditional handheld vacuum cleaner to block the vortex airflow, which makes it difficult for the vortex airflow in the dust cup to pass through the filter evenly and only passes through part of the filter and is discharged through the air outlet, affecting the vacuum cleaner filter's adsorption of dust in the airflow. Utility Model Content

[0004] The utility model aims to solve the above technical problem, namely, the lack of a structure in the dust cup to block the rising vortex airflow, which causes the vortex airflow in the dust cup to be relatively close to the air inlet, thereby affecting the adsorption of dust in the airflow.

[0005] In a first aspect, the utility model provides a dust cup, comprising:

[0006] A cylinder, the cylinder having a first end and a second end, the first end being provided with a bottom cover, the cylinder being provided with a filter element, a spiral air outlet structure, and a top cover connected to the second end, which are sequentially arranged along the axial direction;

[0007] Wherein, along the direction toward the spiral air outlet structure, the filter element has a gradually increasing cross-section, and at the edge of the filter element with the largest cross-section, a shield extending along the direction toward the bottom cover is formed.

[0008] When the vortex wind is drawn by the spiral air outlet structure, the shield extending toward the bottom cover can block the vortex wind to the maximum extent, reducing the possibility of the vortex wind flowing within the cylinder to the side of the spiral air outlet structure, thereby improving the efficiency of the present application in drawing the airflow inside the cylinder out of the cylinder.

[0009] In the preferred technical solution of the dust cup, the barrel is hinged with a buckle at the side near the first end, the buckle has an inner end and an outer end opposite to each other, and the bottom cover is formed with a flange corresponding to the outer end of the buckle;

[0010] The inner end of the buckle is connected to the cylinder through an elastic member, and with the help of the elastic force of the elastic member, the outer end fastens the bottom cover to the first end of the cylinder through the flange.

[0011] In the preferred technical solution of the above dust cup, the cylinder has an air inlet at the side close to the second end.

[0012] In the preferred technical solution of the above-mentioned dust cup, a baffle is arranged on the inner wall of the cylinder near the second end and the outer wall of the spiral air outlet structure, the air inlet is located on the inner side of the baffle, and only one opening connected to the interior of the cylinder is formed between the baffle and the inner wall of the cylinder and the outer wall of the spiral air outlet structure.

[0013] In the preferred technical solution of the dust cup, a sealing piece for sealing the air inlet is hinged inside the cylinder.

[0014] In the preferred technical solution of the above dust cup, the sealing piece is made of rubber material or aluminum alloy.

[0015] In the preferred technical solution of the above dust cup, the elastic member is a spring or elastic steel.

[0016] In the preferred technical solution of the dust cup, a rubber pad is installed on the inner side of the bottom cover, and the filter element is not blocked at one end away from the spiral air outlet structure and rests against the rubber pad.

[0017] In the preferred technical solution of the dust cup, the shield at least covers the position where the cross section of the filter element is enlarged.

[0018] In a second aspect, the utility model further provides a handheld vacuum cleaner, which includes the above-mentioned dust cup.

[0019] The beneficial effect of the utility model is that the present application configures a shield extending toward the bottom cover to maximize the shielding of the vortex wind, thereby reducing the possibility of the vortex wind flowing within the cylinder to the side of the spiral air outlet structure, thereby improving the efficiency of the present application in extracting the airflow inside the cylinder to the outside of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The main view of the utility model Figure 1 ;

[0021] Figure 2 The main view of the utility model Figure 2 ;

[0022] Figure 3 It is a schematic diagram of the bottom cover being opened relative to the cylinder body;

[0023] Figure 4 This is a schematic diagram after removing the cylinder;

[0024] Figure 5 It is a schematic diagram of the spiral air outlet structure;

[0025] Figure 6 It is a cross-sectional view of the utility model;

[0026] Figure 7 It is a cross-sectional view of the spiral air outlet structure and the cylinder;

[0027] In the figure: cylinder 1, first end 11, second end 12, air inlet 13, bottom cover 2, flange 21, rubber pad 22, filter element 3, spiral air outlet structure 4, top cover 5, baffle 6, buckle 7, inner end 71, outer end 72, elastic member 8, baffle 9, sealing sheet 10. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0029] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figures 1 to 7 As shown, the dust cup of the utility model comprises: a barrel 1, the barrel 1 having a first end 11 and a second end 12, the first end 11 being provided with a bottom cover 2, the barrel 1 being provided with a filter element 3, a spiral air outlet structure 4, and a top cover 5 connected to the second end 12 which are arranged in sequence along the axial direction; wherein, along the direction toward the spiral air outlet structure 4, the filter element 3 has a gradually increasing cross-section, and at the edge where the filter element 3 has the largest cross-section, a baffle 6 extending along the direction toward the bottom cover 2 is formed; the barrel 1 has an air inlet 13 at the side close to the second end 12.

[0032] See also Figure 6A filter element 3 and a spiral air outlet structure 4 are sequentially arranged in the cylinder body 1 from the bottom cover 2 to the top cover 5. The filter element 3 and the spiral air outlet structure 4 are connected by screws. The spiral air outlet structure 4 includes at least a plurality of conical cylinders and a spiral structure connected to the conical cylinders.

[0033] See also Figure 4 , Figure 6 , the filter element 3 is a columnar structure at one end close to the bottom cover 2, and the filter element 3 is in a trumpet shape at one end close to the spiral air outlet structure 4. The filter element 3 is installed with a shield 6 at the trumpet-shaped end, and the shield 6 is a columnar structure. The shield 6 extends toward the bottom cover 2 to block the trumpet-shaped part of the filter element 3. Through this arrangement, the vortex wind in the cylinder 1 away from the side of the spiral air outlet structure 4 can be limited to prevent the vortex wind from moving toward the side of the spiral air outlet structure 4, thereby improving the efficiency of the present application in extracting the air flow inside the cylinder 1 out of the cylinder 1. That is, when the vortex wind is pulled by the spiral air outlet structure 4, the shield 6 extending toward the bottom cover 2 can maximize the shielding of the vortex wind, reduce the possibility of the vortex wind flowing in the cylinder 1 to the side of the spiral air outlet structure 4, increase the flow path of the airflow in the cylinder 1, and ensure that the filter element 3 filters and adsorbs dust in the airflow in the cylinder 1.

[0034] See also Figure 6 , Figure 7 Due to the negative pressure formed at the spiral air outlet structure 4, the airflow entering the cylinder 1 through the air inlet 13 is drawn to the filter screen. The airflow is restricted by the baffle 6, so that the vortex airflow in the cylinder 1 can be controlled near the bottom cover 2. After that, the airflow enters the spiral air outlet structure 4 through the filter element 3, and then passes through the through hole opened on the top cover 5 to be discharged from the cylinder 1.

[0035] In one or more embodiments, the barrel 1 is hinged with a buckle 7 at the side near the first end 11, the buckle 7 has an inner end 71 and an outer end 72 relative to each other, and the bottom cover 2 is formed with a flange 21 corresponding to the outer end 72 of the buckle 7; the inner end 71 of the buckle 7 is connected to the barrel 1 through an elastic member 8, and with the help of the elastic force of the elastic member 8, the outer end 72 fastens the bottom cover 2 to the first end 11 of the barrel 1 through the flange 21.

[0036] See also Figure 3 , Figure 6The middle part of the buckle 7 is rotatably mounted on the cylinder 1, and the outer end 72 of the buckle 7 is formed with a slot for clamping the flange 21 of the bottom cover 2. When the bottom cover 2 needs to be clamped on the cylinder 1, the inner end 71 of the buckle 7 is first pressed to open the outer end 72 of the buckle 7, and the elastic member 8 is in a compressed state, and then the bottom cover 2 is covered on the first end 11 of the cylinder 1. After that, the pressure on the inner end 71 of the buckle 7 is released, and under the action of the elastic member 8, the outer end 72 of the buckle 7 moves toward the central axis of the cylinder 1, so that the flange 21 of the bottom cover 2 enters the slot of the outer end 72 of the buckle 7, and the bottom cover 2 is clamped. It has the characteristics of simple structure and convenient operation.

[0037] In one or more embodiments, a baffle 9 is arranged on the inner wall of the cylinder 1 near the second end 12 and the outer wall of the spiral air outlet structure 4, and the air inlet 13 is located on the inner side of the baffle 9. Only one opening connected to the interior of the cylinder 1 is formed between the baffle 9 and the inner wall of the cylinder 1 and the outer wall of the spiral air outlet structure 4.

[0038] See also Figures 3 to 7 In the cylinder 1, the baffle 9 cooperates with the inner wall of the cylinder 1, the outer wall of the spiral air outlet structure 4 and the top cover 5, so that the baffle 9 blocks the air inlet 13 and the cylinder 1, forming an opening with only one air flow channel. When negative pressure is formed in the spiral air outlet structure 4, the air flows into the cylinder 1 through the air inlet 13 and the air flow channel; the present application blocks the air inlet 13 and the internal space of the cylinder 1 through the baffle 9, effectively reducing the possibility of dust in the cylinder 1 falling into the air inlet 13, thereby improving the use effect of the present application.

[0039] In one or more embodiments, a sealing piece 10 for blocking the air inlet 13 is hinged inside the cylinder 1. One side of the sealing piece 10 is hinged inside the cylinder 1. When negative pressure is formed inside the cylinder 1, the sealing piece 10 can rotate relative to the cylinder 1 and no longer block the air inlet 13, so that the airflow carrying dust enters the cylinder 1 through the air inlet 13. When negative pressure is no longer formed inside the cylinder 1, the sealing piece 10 is reset to block the air inlet 13, effectively preventing the dust in the cylinder 1 from being discharged to the outside through the air inlet 13.

[0040] In one or more embodiments, the sealing sheet 10 is made of rubber or aluminum alloy.

[0041] In one or more embodiments, the elastic member 8 is a spring or elastic steel.

[0042] In one or more embodiments, a rubber pad 22 is installed on the inner side of the bottom cover 2 , and the end of the filter element 3 away from the spiral air outlet structure 4 is not blocked and rests on the rubber pad 22 .

[0043] See also Figure 3 , Figure 6The filter element 3 has an opening at one end away from the spiral air outlet structure 4, and the inner side of the bottom cover 2 has a rubber pad 22, and the rubber pad 22 is coaxial with the bottom cover 2; when the bottom cover 2 is closed on the first end 11 of the cylinder 1, the rubber pad 22 blocks the end of the filter element 3 with the opening to prevent the dust in the cylinder 1 from being sucked into the filter element 3; when the bottom cover 2 is opened relative to the first end 11 of the cylinder 1, the open end of the filter element 3 is not blocked. Through this arrangement, it is convenient for the staff to clean the dust accumulated inside the filter element 3 and the cylinder 1.

[0044] In one or more embodiments, the shield 6 at least shields the location where the cross-section of the filter element 3 increases. Figure 2 The shield 6 at least blocks the trumpet-shaped portion of the filter element 3. This arrangement can prevent the airflow entering through the air inlet 13 from being drawn to the spiral air outlet structure 4 at the trumpet-shaped portion of the filter element 3, thereby preventing the airflow carrying dust from passing through the columnar structure of the filter element 3, thereby improving the filtering effect of the filter element 3 of the present application.

[0045] In addition, the utility model also provides a handheld vacuum cleaner having a dust cup in any of the above-mentioned embodiments.

[0046] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A dust cup, characterized in that: include: A cylinder, the cylinder having a first end and a second end, the first end being provided with a bottom cover, the cylinder being provided with a filter element, a spiral air outlet structure, and a top cover connected to the second end, which are sequentially arranged along the axial direction; Wherein, along the direction toward the spiral air outlet structure, the filter element has a gradually increasing cross-section, and at the edge of the filter element with the largest cross-section, a shield extending along the direction toward the bottom cover is formed.

2. The dust cup according to claim 1, characterized in that: The barrel is hinged with a buckle at the side near the first end, the buckle has an inner end and an outer end opposite to each other, and the bottom cover is formed with a flange corresponding to the outer end of the buckle; The inner end of the buckle is connected to the cylinder through an elastic member, and with the help of the elastic force of the elastic member, the outer end fastens the bottom cover to the first end of the cylinder through the flange.

3. The dust cup according to claim 1, characterized in that: The cylinder has an air inlet at a side edge close to the second end.

4. The dust cup according to claim 3, characterized in that: The cylinder is provided with a baffle on the inner wall near the second end and the outer wall of the spiral air outlet structure, the air inlet is located on the inner side of the baffle, and only one opening connected to the interior of the cylinder is formed between the baffle and the inner wall of the cylinder and the outer wall of the spiral air outlet structure.

5. The dust cup according to claim 3 or 4, characterized in that: A sealing piece for sealing the air inlet is hinged inside the cylinder.

6. The dust cup according to claim 5, characterized in that: The sealing sheet is made of rubber or aluminum alloy.

7. The dust cup according to claim 2, characterized in that: The elastic member is a spring or elastic steel.

8. The dust cup according to claim 1, characterized in that: A rubber pad is installed on the inner side of the bottom cover, and the filter element is not blocked at one end away from the spiral air outlet structure and rests against the rubber pad.

9. The dust cup according to claim 1, characterized in that: The shield at least covers the position where the cross section of the filter element increases.

10. A handheld vacuum cleaner, characterized in that: Including the dust cup described in any one of claims 1-9.

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