A vacuum cleaner

Abstract

The present invention discloses a vacuum cleaner, which comprises a body, a negative pressure assembly disposed within the body, a dust separation assembly disposed upstream of the negative pressure unit, and a dust collection assembly cooperating with the dust separation assembly. The dust separation assembly at least includes a filtering unit detachably assembled within the body. Wherein, a sealing gasket is provided between the filtering unit and the body. The sealing gasket at least includes a flexible main body portion fixedly connected to one of the body or the filtering unit, and a first lip portion extending from the flexible main body portion towards the other of the body or the filtering unit. The included angle between the first lip portion and the main body portion is an acute angle and the opening of the included angle faces upstream of the filtering unit, so as to enhance the sealing effect and sealing stability between the filtering unit and the body.

Description

Technical Field

[0001] The present invention relates to a filter sealing structure of a vacuum cleaner. Background Art

[0002] In the prior art, for the sealing and fixing of a filtering mechanism, generally soft sealing members are used on the upper and lower sides, and the filtering mechanism is sealed with the machine head or the body by means of crimping and fixing formed in the assembly direction of the filtering mechanism. The sealing effect depends on the pressing force in the assembly direction. Usually, in order to make the sealing effect and stability reach the best, the pressure in the assembly direction is often large, which is not convenient for assembly. Especially for a filtering mechanism which needs to be disassembled frequently, the inconvenience in assembly is more likely to make the overall user experience of the product worse; in addition, the soft sealing member is easy to lose elasticity after being strongly pressed, and its sealing effect is easy to become worse after being disassembled many times. Summary of the Invention

[0003] The purpose of the present invention is to provide a filter sealing structure which is convenient for disassembly and assembly and has good sealing performance.

[0004] To achieve the above invention purpose, the present invention provides a vacuum cleaner, including a body, a negative pressure assembly arranged in the body, a dust separation assembly arranged upstream of the negative pressure unit, and a dust collection assembly cooperating with the dust separation assembly. The dust separation assembly at least includes a filtering unit detachably assembled in the body. Wherein, a sealing gasket is arranged between the filtering unit and the body. The sealing gasket at least includes a flexible main body part fixedly connected to one of the body or the filtering unit, and a first lip part extending from the flexible main body part to the other of the body or the filtering unit. The included angle between the first lip part and the main body part is an acute angle and the opening of the included angle faces the upstream of the filtering unit.

[0005] Further, the filtering unit includes a docking part assembled with the body, the body includes a mating part cooperating with the docking part, and at least one of the docking part or the mating part includes a stop part. When the filtering unit and the body are in the correct assembly state, the other of the docking part or the mating part abuts against the stop part.

[0006] Further, the docking part is provided with an internal thread, the mating part is provided with an external thread, and the stop part at least partially stops the external thread or at least partially lies on the spiral line of the external thread. When the filtering unit and the body are in the correct assembly state, the internal thread abuts against the stop part.

[0007] Furthermore, at least one of the filtering unit or the fuselage includes at least one stop portion, and at least one of the other of the filtering unit or the fuselage includes a limiting portion that cooperates with the stop portion. When the filtering unit and the fuselage are in a correctly assembled state, the stop portion abuts against the limiting portion.

[0008] Furthermore, the main body portion of the sealing gasket is fixedly provided on the filtering unit. When the filtering unit and the fuselage are in a correctly assembled state, the first lip portion is in interference fit and abuts against the fuselage.

[0009] Furthermore, when the filtering unit and the fuselage are in a non-assembled state, the cross-sectional area of the fan-shaped gap between the first lip portion and the main body portion of the sealing gasket is s. When the filtering unit and the fuselage are in a correctly assembled state, the interference amount a of the interference fit is between 10% and 70% of the cross-sectional area s.

[0010] Furthermore, the fuselage includes a flexible gasket that cooperates with the first lip portion. When the filtering unit and the fuselage are in a correctly assembled state, the first lip portion is in interference fit and abuts against the flexible gasket.

[0011] Furthermore, the filtering unit has an assembly direction B for assembling to the fuselage. In the assembly direction B, the filtering unit includes an assembly end. The sealing gasket is provided at the assembly end. When the filtering unit and the fuselage are in a correctly assembled state, there is an assembly gap b between the assembly end and the fuselage. The assembly gap b is smaller than the maximum width c of the gap between the first lip portion and the main body portion, and larger than the maximum thickness d of the first lip portion.

[0012] Furthermore, the filtering unit includes a first alignment mark provided on its outer surface, and the fuselage includes a second alignment mark provided on the outer surface of the fuselage. When the filtering unit and the fuselage are in a correctly assembled state, the first alignment mark is aligned with the second alignment mark.

[0013] Furthermore, the sealing gasket includes a flexible main body portion fixedly connected to one of the fuselage or the filtering unit and a second lip portion extending from the flexible main body portion toward the other of the fuselage or the filtering unit. The included angle between the second lip portion and the main body portion is an acute angle and the opening direction of the included angle is opposite to the opening direction of the included angle between the first lip portion and the main body portion.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By arranging a sealing gasket with a lip part in the assembly gap between the filtering unit and the fuselage, and further limiting the width of the assembly gap through the arrangement of a stop part to limit the folding amount / interference amount of the lip part, the sealing effect of the assembly gap is increased while protecting the flexibility of the lip part of the sealing gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of a vacuum cleaner in a specific embodiment of the present invention;

[0016] Figure 2 is an exploded schematic diagram of a part of the vacuum cleaner in a specific embodiment of the present invention;

[0017] Figure 3 is Figure 2 a top view of the assembled state of the structure shown;

[0018] Figure 4 is an exploded schematic diagram of the filtering unit in a specific embodiment of the present invention;

[0019] Figure 5 is Figure 3 a sectional schematic diagram of the structure shown along the A-A direction;

[0020] Figure 6 is Figure 5 a partial enlarged view of the circled part of the structure shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present invention will be described in detail below in conjunction with the specific embodiments shown in the drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional transformation made by those of ordinary skill in the art based on these embodiments is included in the protection scope of the present invention.

[0022] It should be noted that the vacuum cleaner described in the present invention can be a general household vacuum cleaner, such as a handheld vacuum cleaner, an upright vacuum cleaner, a horizontal vacuum cleaner, or other portable vacuum cleaners, or it can also be an industrial multi-purpose vacuum cleaner. For the convenience of better understanding the technical solution of the present invention, the following only takes a common barrel vacuum cleaner as an example to elaborate on the specific structure. However, it does not mean that the vacuum cleaner described in the present invention only refers to the barrel vacuum cleaner shown in the drawings.

[0023] Please refer to Figure 1As shown in the figure, it is advisable to define the concept of upstream and downstream based on the air flow direction when the vacuum cleaner of the present invention is working normally. The vacuum cleaner of the present invention includes a body 100, a negative pressure component 1 provided in the body 100, a dust separation component 2 provided upstream of the negative pressure component 1, and a dust collection component (not shown) cooperating with the dust separation component 2. Preferably, the vacuum cleaner further includes a floor treatment unit (not shown) detachably docked with the body 100. During actual operation, under the action of the negative pressure provided by the negative pressure component 1, the floor treatment unit sucks the air flow containing debris particles on the floor into the body 100, and the debris particles are separated into the dust collection component through the dust separation component 2, and the filtered air flow is discharged from the body 100 through the negative pressure component 1.

[0024] Please refer to Figures 2 - 4 As shown in the figure, the dust separation component 2 at least includes a filter unit 20 detachably assembled in the body. In a preferred embodiment, the dust separation component 2 may further include a cyclone separation component (not shown) provided downstream of the filter unit 20 to enhance the dust separation effect. The filter unit 20 includes a filter upper cover 21 docked with the body on one side of the filter unit 20, a filter lower cover 24 on the other side of the filter unit 20, and a filter material 22 located between the filter upper cover 21 and the lower cover 24. The filter material 22 is preferably filter paper or HEPA. In this embodiment, a metal mesh 23 is further provided between the filter upper cover 21 and the lower cover 24. The metal mesh 23 is located upstream of the above-mentioned filter material 24 to perform primary filtration on the working air flow to screen out larger debris particles in the working air flow.

[0025] It should be noted that in other embodiments, the filter unit 20 may also use a filter bracket (not shown) to replace the filter upper cover 21 and the lower cover 24 to support the above-mentioned filter material 22 and replace the above-mentioned filter upper cover 21 to complete the assembly / docking with the body.

[0026] Please further refer to Figure 5 and Figure 6 As shown in the figure, specifically, a sealing gasket 25 is provided between the filter unit 20 and the body 100. In this embodiment, it is advisable to define the direction in which the filter unit 2 moves to the body 100 as the assembly direction B. Along this assembly direction B, the filter unit 2 has an assembly end. The sealing gasket 25 is provided between the assembly end and the body 100. In this embodiment, the assembly end is the upper end of the filter upper cover 21, and the sealing gasket 25 is provided between the filter upper cover 21 and the body 100.

[0027] In this embodiment, the sealing gasket 25 includes a flexible main body portion 250 fixedly connected to the filtering unit 20 and a first lip portion 252 extending from the main body portion 250 towards the fuselage 100. The angle between the first lip portion 252 and the main body portion 250 is an acute angle and the opening of this angle faces the upstream of the filtering unit 20. However, it should be noted that in other embodiments, the sealing gasket can also be fixedly connected to the fuselage (not shown), that is, the main body portion of the sealing gasket is provided on the fuselage, and its lip portion extends towards the filtering unit. Without changing the details of the sealing gasket, damage to the sealing gasket during the process of being disassembled and cleaned following the filtering unit can be avoided.

[0028] In a preferred embodiment, the sealing gasket 25 may further include a second lip portion (not shown) extending from the main body portion 250 towards the fuselage 100. The angle between the second lip portion and the main body portion is an acute angle and the opening of this angle faces in the opposite direction to the opening of the angle between the first lip portion 252 and the main body portion 250, so as to enhance the sealing effect of the sealing gasket.

[0029] Please further combine with Figure 3 As shown, the filtering unit 20 includes a docking portion that can be assembled with the fuselage 100. At the same time, the fuselage 100 includes a mating portion that cooperates with the docking portion. In this embodiment, the mating portion includes a stop portion 130. When the filtering unit 20 and the fuselage 100 are in a correctly assembled state (a state where they can be used normally), the docking portion abuts against the stop portion 130 to define the assembly stroke of the docking portion and the mating portion. However, in other embodiments, the stop portion can also be provided on the docking portion (not shown), and the mating portion abuts against the stop portion, which can also achieve the effect of defining the assembly stroke of the docking portion and the mating portion. Specifically, in this embodiment, the docking portion is provided with an internal thread (not shown), the mating portion is provided with an external thread 120, and the stop portion 130 at least partially stops the external thread 120 or is at least partially located on the spiral path of the external thread 120, so that when the docking portion and the mating portion are assembled, the internal thread can abut against the stop portion 130.

[0030] Please refer to Figures 5 - 6As shown, when the filtering unit 20 and the fuselage 100 are in an assembled state, the first lip portion 252 is in interference fit with the fuselage 100. That is, in the assembly direction B, the assembly gap b between the assembly end (the filter upper cover 21 in this embodiment) and the fuselage is smaller than the maximum width c of the gap between the first lip portion 252 and the main body portion 250, so that the lip portion is in close fit with the fuselage 100. At the same time, the assembly gap b between the assembly end and the fuselage is greater than the maximum thickness d (not marked) of the first lip portion 252, to prevent the fuselage 100 from excessively pressing the lip portion 252, so that the lip portion 252 remains flexible and a stable sealing effect is achieved. At the same time, it may be defined that the cross-sectional area of the initial sector gap (unassembled state) between the first lip portion 252 and the main body portion 250 of the sealing gasket 25 is s (not marked). In order to make the first lip portion 252 in the assembled state achieve the best sealing effect, the optimal interference amount a of the above interference fit is between 10% and 70% of the cross-sectional area s, preferably 30%. In other words, in this embodiment, by setting the position of the stop portion 130, the size of the assembly gap b between the filtering unit 20 and the fuselage 100 is controlled, and the size of the assembly gap b is further limited so that the amount of the first lip portion 252 being pressed down is between 10% and 70%, while avoiding the loss of flexibility of the lip portion, the best sealing effect of the assembly gap is achieved.

[0031] It should be noted that the above stop portion is intended to limit the assembly gap between the filtering unit 20 and the fuselage 100. Therefore, independent of the docking portion and the mating portion, mutually cooperating limiting portions / stoppers may be respectively provided on the filtering unit 20 and the fuselage 100 to limit the assembly stroke of the docking portion and the mating portion, so as to control the assembly gap between the filtering unit 20 and the fuselage 100 to achieve the above sealing effect.

[0032] Please further refer to Figure 6 As shown, the fuselage 100 further includes a flexible gasket 102 that cooperates with the first lip portion 252. When the filtering unit 20 and the fuselage 100 are in an assembled state, the aforementioned first lip portion 252 abuts against the flexible gasket 102 to further enhance the best sealing effect of the assembly gap.

[0033] In this embodiment, the filtering unit 20 further includes a first alignment mark (not shown) provided on its outer surface, and the fuselage 100 further includes a second alignment mark (not shown) provided on the outer surface of the fuselage 100. When the filtering unit 20 and the fuselage 100 are in an assembled state, the first alignment mark is aligned with the second alignment mark to facilitate the actual assembly operation by the user and the grasping of the optimal assembly position. In other embodiments, the alignment mark may also be a cooperating protrusion and recess, such that when the user is assembling, the user can judge whether the assembly reaches the appropriate optimal position by the feel of the protrusion sliding into the recess.

[0034] It should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments understandable to those skilled in the art.

[0035] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent embodiments or modifications made without departing from the spirit of the art of the present invention should be included within the protection scope of the present invention.

Claims

1. A vacuum cleaner, comprising a body, a negative pressure assembly disposed within the body, a dust separation assembly disposed upstream of the negative pressure assembly, and a dust collection assembly cooperating with the dust separation assembly, wherein the dust separation assembly at least includes a filter unit detachably assembled within the body, and is characterized in that: A sealing gasket is provided in the assembly gap between the filtering unit and the fuselage. The sealing gasket at least includes a flexible main body portion fixedly connected to one of the fuselage or the filtering unit and a first lip portion extending from the flexible main body portion towards the other of the fuselage or the filtering unit. The included angle between the first lip portion and the main body portion is an acute angle and the opening of the included angle faces the upstream of the filtering unit; the filtering unit includes a docking portion assembled with the fuselage, the fuselage includes a mating portion cooperating with the docking portion, and at least one of the docking portion or the mating portion includes a stop portion. When the filtering unit and the fuselage are in a correctly assembled state, the other of the docking portion or the mating portion abuts against the stop portion to define the width of the assembly gap, so as to define the interference amount of the first lip portion.

2. The vacuum cleaner according to claim 1, characterized in that, The docking portion is provided with an internal thread, the mating portion is provided with an external thread, and the stop portion at least partially stops the external thread or at least partially lies on the helix of the external thread. When the filtering unit and the fuselage are in a correctly assembled state, the internal thread abuts against the stop portion.

3. The vacuum cleaner according to claim 1, characterized in that, At least one of the filtering unit or the fuselage includes the stop portion, and the other of the filtering unit or the fuselage at least includes a limiting portion cooperating with the stop portion. When the filtering unit and the fuselage are in a correctly assembled state, the stop portion abuts against the limiting portion.

4. The vacuum cleaner according to any one of claims 1 to 3, characterized in that, The main body portion of the sealing gasket is fixedly provided on the filtering unit. When the filtering unit and the fuselage are in a correctly assembled state, the first lip portion abuts against the fuselage with interference.

5. The vacuum cleaner according to claim 4, characterized in that, When the filtering unit and the fuselage are in an unassembled state, the cross-sectional area of the sector gap between the first lip portion and the main body portion of the sealing gasket is s. When the filtering unit and the fuselage are in a correctly assembled state, the interference amount a of the interference fit is between 10% and 70% of the cross-sectional area s.

6. The vacuum cleaner according to claim 4, characterized in that, The fuselage includes a flexible gasket cooperating with the first lip portion. When the filtering unit and the fuselage are in a correctly assembled state, the first lip portion abuts against the flexible gasket with interference.

7. The vacuum cleaner according to claim 4, characterized in that, The filtering unit has an assembly direction B for assembling to the fuselage. In the assembly direction B, the filtering unit includes an assembly end, the sealing gasket is provided at the assembly end. When the filtering unit and the fuselage are in a correctly assembled state, there is an assembly gap b between the assembly end and the fuselage. The assembly gap b is smaller than the maximum width c of the gap between the first lip portion and the main body portion and larger than the maximum thickness d of the first lip portion.

8. The vacuum cleaner according to any one of claims 1 to 3, characterized in that, The filtering unit includes a first alignment mark provided on its outer surface, and the fuselage includes a second alignment mark provided on the outer surface of the fuselage. When the filtering unit and the fuselage are in a correctly assembled state, the first alignment mark is aligned with the second alignment mark.

9. The vacuum cleaner according to any one of claims 1 to 3, characterized in that, The sealing gasket includes a flexible main body portion fixedly connected to one of the fuselage or the filtering unit, and a second lip portion extending from the flexible main body portion towards the other of the fuselage or the filtering unit. The included angle between the second lip portion and the main body portion is an acute angle, and the opening direction of the included angle is opposite to the opening direction of the included angle between the first lip portion and the main body portion.

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