Dust collector

Abstract

The utility model provides a dust collector. The dust collector comprises a shell, an inlet and an outlet are arranged on the shell; a motor is accommodated in the shell and is used for generating vacuum to form an airflow path from the inlet to the outlet; a filter is arranged on the airflow path and is used for filtering dirt in the airflow path; a pipe assembly comprises a pipe joint and a pipe body, the pipe body is connected with the inlet through the pipe joint; the dust collector further comprises an airflow contact piece, the airflow contact piece is arranged to be at least partially exposed to the airflow path between the inlet and the filter, the airflow contact piece is in conductive connection with the pipe body, wherein the airflow contact piece is made of conductive material. The dust collector provided by the utility model can neutralize the positive electricity carried by dust in the airflow path and the negative electricity carried by the pipe body, so as to eliminate static electricity generated on the pipe body when the pipe body sucks external dirt. The structure of the dust collector is more simple, and the manufacturing and assembly costs are lower.

Description

Technical Field

[0001] This utility model relates to the field of electrical appliances, and in particular to a vacuum cleaner. Background Technology

[0002] During vacuum cleaner use, dust and other impurities are sucked into the vacuum cleaner's canister through the tube assembly. Dust particles collide with and rub against the tube assembly, causing static electricity to accumulate on it. When static electricity accumulates on the tube assembly, it easily attracts dust particles, leading to a decrease in the vacuum cleaner's suction efficiency. Furthermore, the static electricity can be released instantly upon contact with the user, causing an electric shock and affecting the user's safety and experience.

[0003] To address the aforementioned issues, existing vacuum cleaners require an additional circuit board to conduct static electricity away, or long wires to be laid inside the canister to ground the static electricity on the tube assembly. Both of these static-dissipating structures involve numerous components and wiring, resulting in complex structures and increased manufacturing and assembly costs. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum cleaner that solves the problem that the static dissipation structure in existing vacuum cleaners is complex, which increases the manufacturing and assembly costs of the vacuum cleaner.

[0005] To achieve the above objectives, this utility model provides a vacuum cleaner, which includes: A housing, wherein an inlet and an outlet are provided on the housing; An electric motor, housed within the housing, is used to generate a vacuum to create an airflow path from the inlet to the outlet; A filter is installed in the airflow path to filter out contaminants in the airflow path; A pipe assembly, including a pipe fitting and a pipe body, wherein the pipe body is connected to the inlet via the pipe fitting; The vacuum cleaner also includes an airflow contact element, which is configured to be at least partially exposed in the airflow path between the inlet and the filter, and is electrically connected to the tube body, wherein the airflow contact element is made of a conductive material. As a further improvement of this utility model, the airflow contact element is made of metal material and is electrically connected to the pipe joint through a conductive component.

[0006] As a further improvement of this utility model, the airflow contact element is formed as a metal screw, which is fixed to the inner wall of the housing and exposed in the airflow path between the inlet and the filter.

[0007] As a further improvement of this utility model, the housing includes a head shell and a barrel, the head shell and the barrel forming a dust collection chamber, the inlet and the outlet are both connected to the dust collection chamber, the filter is disposed in the dust collection chamber, and the airflow contact member has a first contact portion fixed to the inner wall of the head shell and a second contact portion exposed in the dust collection chamber.

[0008] As a further improvement of this utility model, a surrounding portion is formed on the side of the machine head housing near the dust collection chamber, which circumferentially surrounds the second contact portion, and the second contact portion does not extend beyond the surrounding portion.

[0009] As a further improvement of this utility model, a notch is provided on the enclosure.

[0010] As a further improvement of this utility model, a guide pipe is provided on the side of the machine head shell near the barrel body. One end of the guide pipe is connected to the inlet, and the other end is set towards the filter. The airflow path from the inlet to the outlet flows through the guide pipe, the airflow contact element and the filter in sequence.

[0011] As a further improvement of this utility model, the conductive component includes a first conductive wire and a metal spring sheet electrically connected to the first conductive wire. The metal spring sheet includes a fixing part fixedly disposed relative to the inner wall of the machine head housing and an elastic part extending from the fixing part to the pipe joint.

[0012] As a further improvement of this utility model, the elastic part is provided with a protrusion facing the pipe joint.

[0013] As a further improvement of this utility model, the vacuum cleaner also includes a manual operation part disposed on the housing of the head, the manual operation part being used to control the working state of the vacuum cleaner, and the manual operation part being electrically connected to the airflow contact element and / or the pipe joint through a second conductive wire.

[0014] Beneficial effects: The vacuum cleaner provided by this utility model, after incorporating an airflow contact component, utilizes the positive charge of dust in the airflow path to neutralize the negative charge of the tube body, thereby eliminating static electricity generated on the tube body when sucking in external dirt. Users will not be shocked by the tube body while using the vacuum cleaner, ensuring a superior user experience. Compared to existing technologies, the vacuum cleaner provided by this utility model eliminates the need for an additional circuit board to conduct static electricity away from the tube body, and also eliminates the need for numerous components and long wiring for grounding the static electricity on the tube body. Its structure is simpler, and its manufacturing and assembly costs are lower. Attached Figure Description

[0015] Figure 1This is a perspective view of a vacuum cleaner provided in an embodiment of the present utility model; Figure 2 for Figure 1 A 3D schematic diagram of a vacuum cleaner after removing some of its structural components; Figure 3 for Figure 1 A cross-sectional view of a vacuum cleaner in the image; Figure 4 for Figure 2 A magnified diagram of point A in the middle; Figure 5 for Figure 1 A front view of part of the structure of the vacuum cleaner in the image; Figure 6 for Figure 5 A magnified diagram of point C in the middle; Figure 7 for Figure 1 A three-dimensional schematic diagram of part of the structure of a vacuum cleaner; Figure 8 for Figure 7 A magnified diagram of point D in the middle; Figure 9 for Figure 1 An exploded view of the vacuum cleaner in the image; Figure 10 for Figure 9 A magnified diagram of point E in the middle; Figure 11 for Figure 2 A schematic diagram following the method at point B.

[0016] In the picture: 100. Vacuum cleaner; 10. Shell; 11. Inlet; 12. Outlet; 13. Dust collection chamber; 14. Enclosure; 141. Notch; 15. Barrel body; 16. Motor; 30. Filter; 40. Pipe assembly; 41. Pipe fitting; 42. Pipe body; 50. Airflow contact element; 51. First contact portion; 52. Second contact portion; 60. Drainage pipe; 70. Conductive component; 71. Metal spring; 711. Fixing part; 712. Elastic part; 713. Protrusion; 72. First conductive wire; 721. Terminal; 80. Manual operation unit; 81. Second conductive wire. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any modifications to the mechanism, method, or function made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0018] The terms used herein, such as "up," "down," "left," "right," "front," and "back," indicating spatial relative position, are for illustrative purposes to describe the relationship of one feature relative to another, as shown in the accompanying drawings. It is understood that, depending on the product's placement, these terms may be intended to include different orientations besides those shown in the figures, and should not be construed as limiting the claims. Furthermore, the descriptive term "horizontal" used herein is not entirely equivalent to being perpendicular to the direction of gravity, and allows for a certain angle of inclination.

[0019] like Figure 1-4 As shown, this utility model provides a vacuum cleaner 100, which is used to absorb dirt from the ground, walls and other surfaces to achieve the purpose of cleaning the environment.

[0020] Vacuum cleaner 100 includes a housing 10, a motor 20, a filter 30, and a hose assembly 40. The housing 10 has an inlet 11 and an outlet 12. The hose assembly 40 includes a hose connector 41 and a hose body 42. The hose body 42 is connected to the inlet 11 via the hose connector 41, which is specifically connected to the housing 10. The motor 20 is housed within the housing 10 and is used to generate a vacuum to form an airflow path from the inlet 11 to the outlet 12. The filter 30 is disposed on the airflow path and is specifically connected to the housing 10.

[0021] When the vacuum cleaner 100 is working, the motor 20 is activated. Under the vacuum generated by the motor 20, external dirt is sucked into the tube body 42 and then enters the airflow path through the inlet 11. The airflow in the airflow path carries the dirt through the filter 30, and after passing through the filter 30, the airflow in the airflow path flows out of the housing 10 through the outlet 12. As the dirt in the airflow path flows through the filter 30, it is filtered and retained inside the housing 10, thus the vacuum cleaner 100 achieves the purpose of collecting dirt.

[0022] The vacuum cleaner 100 also includes an airflow contact 50, which is configured to be at least partially exposed to the airflow path between the inlet 11 and the filter 30. The airflow contact 50 is made of a conductive material and is electrically connected to the tube body 42.

[0023] When the tube body 42 draws in contaminants, it rubs against the dust within the contaminants. During this friction, the tube body 42 loses electrons from the dust, becoming negatively charged, while the dust becomes positively charged. As the positively charged dust flows through the airflow path, it comes into contact with the airflow contact element 50. In the aforementioned configuration, the airflow contact element 50 is electrically connected to the tube body 42, allowing the negative charge on the tube body 42 and the positive charge of the dust in the airflow path to neutralize each other, thereby eliminating static electricity on the tube body 42.

[0024] This embodiment does not limit the material of the tube body 42. The tube body 42 can be made of plastic or antistatic material. It is understood that, regardless of the material of the tube body 42, after the tube body 42 rubs with dust, electron transfer will occur between the tube body 42 and the dust, making the tube body 42 and the dust passing through the tube body 42 charged. Even if the tube body 42 is made of antistatic material, a small amount of charge will accumulate on the tube body 42 itself.

[0025] In some possible implementations, the tube body 42 can be made of PVC (polyvinyl chloride) or EVA (ethylene-vinyl acetate copolymer). It should be noted that dust is generally composed of microplastic particles (PP material). PVC and EVA have stronger electron-capturing capabilities than PP. When the PVC or EVA tube body 42 rubs against dust, the tube body 42 will steal electrons from the dust, thus becoming negatively charged, while the dust becomes positively charged after losing electrons. Furthermore, compared to EVA, PVC is softer, which helps to bend the hose into the shape required by the user.

[0026] The vacuum cleaner 100 provided in this embodiment, after the airflow contact member 50 is provided, can utilize the positive charge carried by dust in the airflow path to neutralize the negative charge carried by the tube body 42, thereby eliminating the static electricity generated on the tube body 42 when sucking in external dirt. Users will not be shocked by the tube body 42 when using the vacuum cleaner 100, ensuring a good user experience. Compared with the prior art, the vacuum cleaner 100 provided in this embodiment does not require an additional circuit board to conduct static electricity away from the tube body 42, nor does it require numerous components or long wiring to ground the static electricity on the tube body 42. The vacuum cleaner 100 provided in this embodiment has a simpler structure and lower manufacturing and assembly costs.

[0027] In this embodiment, the airflow contact element 50 is made of a metallic material, which has good electrical conductivity and a certain structural strength. The specific material of the airflow contact element 50 can be iron, copper, or an alloy. The airflow contact element 50 is electrically connected to the pipe connector 41 via the conductive component 70. The pipe connector 41 is conductive, and the pipe body 42 is connected to the inlet 11 via the pipe connector 41, making contact with the pipe connector 41, thus achieving a conductive connection between them. Specifically, the pipe body 42 is electrically connected to the airflow contact element 50 via the pipe connector 41 and the conductive component 70. In some possible implementations, the pipe connector 41 can be made of an antistatic material, such as conductive PP, i.e., a modified plastic made by mixing conductive fillers (such as carbon black) into PP.

[0028] Continue to combine Figure 5-9 As shown, the airflow contact 50 is formed as a metal screw, which is fixed to the inner wall of the housing 10 and exposed in the airflow path between the inlet 11 and the filter 30. When the airflow contact 50 is made of a metal screw, its installation is simple and it can be stably connected to the inner wall of the housing 10.

[0029] In this embodiment, the housing 10 includes a head housing 16 and a barrel 15. The head housing 16 and the barrel 15 enclose a dust collection chamber 13, with both the inlet 11 and the outlet 12 communicating with the dust collection chamber 13. A filter 30 is disposed within the dust collection chamber 13. It is conceivable that the airflow path between the inlet 11 and the filter 30 is located within the dust collection chamber 13. When the vacuum cleaner 100 is operating, dirt sucked into the tube body 42 will enter the dust collection chamber 13 through the inlet 11, thus entering the airflow path between the inlet 11 and the filter 30.

[0030] Combination Figure 4-6 As shown, the airflow contactor 50 has a first contact portion 51 fixed to the inner wall of the head housing 16 and a second contact portion 52 exposed inside the dust collection chamber 13. The conductive component 70 can contact the tube body 42 and the first contact portion 51 respectively, thereby realizing a conductive connection between the tube body 42 and the airflow contactor 50. In this way, the conductive component 70 does not need to extend into the dust collection chamber 13 and will not be contaminated by dirt inside the dust collection chamber 13. There is also no need to make holes in the head housing 16 to allow the conductive component 70 to enter the dust collection chamber 13, simplifying the structure of the vacuum cleaner 100.

[0031] Combination Figure 7-8 As shown, in this embodiment, a baffle portion 14 is formed on the side of the head housing 16 near the dust collection chamber 13. The baffle portion 14 is arranged circumferentially around the second contact portion 52, and the second contact portion 52 does not extend beyond the baffle portion 14. With the baffle portion 14 provided, it is difficult for relevant personnel (such as the assemblers of the vacuum cleaner 100) to come into contact with the second contact portion 52 when installing the head housing 16 to the barrel 15, thus preventing the second contact portion 52 from injuring relevant personnel.

[0032] In this embodiment, the head housing 16 is detachably connected to the barrel 15. When it is necessary to clean the dirt inside the barrel 15, the user can remove the head housing 16 from the barrel 15. The aforementioned enclosure 14 can prevent the user from being injured by the second contact part 52 when installing or removing the head housing 16.

[0033] In this embodiment, a notch 141 is provided on the enclosure 14. The notch 141 allows the airflow containing dirt in the airflow path to come into contact with the second contact part 52 more often. The second contact part 52 can come into contact with the positively charged dust in the dust collection chamber 13 more often, which helps to eliminate the negative charge on the pipe body 42.

[0034] A guide pipe 60 is provided on the side of the casing 16 near the barrel 15. One end of the guide pipe 60 is connected to the inlet 11, and the other end is set towards the filter 30. The airflow path from the inlet 11 to the outlet 12 will flow through the guide pipe 60, the airflow contact element 50, and the filter 30 in sequence. The dirty airflow flowing into the guide pipe 60 from the inlet 11 will flow towards the airflow contact element 50 and the filter 30 under the guidance of the guide pipe 60, thereby ensuring that the airflow contact element 50 can make sufficient contact with the dust in the dirty airflow, and that the dirty airflow can flow more effectively to the filter 30.

[0035] like Figure 4 , 10 As shown, the conductive component 70 includes a first conductive wire 72 and a metal spring 71 electrically connected to the first conductive wire 72. The metal spring 71 includes a fixing part 711 and an elastic part 712. The fixing part 711 is fixedly disposed relative to the inner wall of the machine head housing 16, and the elastic part 712 extends from the fixing part 711 to the pipe connector 41. The elastic part 712 can elastically deform relative to the fixing part 711. When it comes into contact with the pipe connector 41, it is in an elastically deformed state. The elastic part 712 fits tightly against the pipe connector 41, ensuring the reliability of the conductive connection between the conductive component 70 and the pipe connector 41.

[0036] The metal spring 71 and the airflow contact 50 are electrically connected via a first conductive wire 72. Specifically, the first conductive wire 72 is electrically connected to the airflow contact 50 via a terminal 721. The terminal 721 is annular and is sleeved around the airflow contact 50, preventing it from easily detaching from the airflow contact 50. Furthermore, the elastic part 712 is provided with a protrusion 713 protruding towards the pipe joint 41. The protrusion 713 allows the elastic part 712 to fit more tightly against the pipe joint 41.

[0037] like Figure 2 , 11As shown, the vacuum cleaner 100 also includes a manual operation section 80 disposed on the head housing 16, which is used to control the working state of the vacuum cleaner 100. For example, the manual operation section 80 may be a button, knob, etc. By operating the manual operation section 80, the user can control the working state of the vacuum cleaner 100, such as controlling the vacuum cleaner 100 to start or stop.

[0038] In this embodiment, the manual operation unit 80 is electrically connected to the airflow contact member 50 and / or the pipe connector 41 via the second conductive line 81. When the manual operation unit 80 is electrically connected to the airflow contact member 50, the static electricity generated on the manual operation unit 80 can neutralize the static electricity of the dust in the airflow path. When the manual operation unit 80 is electrically connected to the pipe connector 41, since the pipe connector 41 and the airflow contact member 50 are electrically connected via the conductive component 70, the manual operation unit 80 and the airflow contact member 50 can be electrically connected, and the static electricity generated on the manual operation unit 80 can neutralize the static electricity of the dust in the airflow path. By adopting the above arrangement, static electricity on the manual operation unit 80 can be eliminated, thus preventing the user from being shocked by static electricity when operating the manual operation unit 80, ensuring user safety and user experience.

[0039] It should be noted that the manual operation part 80 can be made of silicone, which easily gains electrons and becomes negatively charged. The positive charge carried by dust in the polluted airflow can neutralize the negative charge on the manual operation part 80.

[0040] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0041] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A vacuum cleaner, comprising: A housing, wherein an inlet and an outlet are provided on the housing; An electric motor, housed within the housing, is used to generate a vacuum to create an airflow path from the inlet to the outlet; A filter is installed in the airflow path to filter out contaminants in the airflow path; A pipe assembly, including a pipe fitting and a pipe body, wherein the pipe body is connected to the inlet via the pipe fitting; Its features are: The vacuum cleaner also includes an airflow contact element, which is configured to be at least partially exposed in the airflow path between the inlet and the filter, and is electrically connected to the tube body, wherein the airflow contact element is made of a conductive material.

2. The vacuum cleaner according to claim 1, characterized in that, The airflow contact element is made of metal and is electrically connected to the pipe joint through a conductive component.

3. The vacuum cleaner according to claim 2, characterized in that, The airflow contact element is formed as a metal screw, which is fixed to the inner wall of the housing and exposed in the airflow path between the inlet and the filter.

4. The vacuum cleaner according to claim 1, characterized in that, The housing includes a head shell and a barrel. The head shell and the barrel form a dust collection chamber. The inlet and the outlet are both connected to the dust collection chamber. The filter is disposed in the dust collection chamber. The airflow contact member has a first contact portion fixed to the inner wall of the head shell and a second contact portion exposed in the dust collection chamber.

5. The vacuum cleaner according to claim 4, characterized in that, A circumferential enclosure is formed on the side of the machine head housing near the dust collection chamber, and the second contact portion does not extend beyond the enclosure.

6. The vacuum cleaner according to claim 5, characterized in that, The enclosure has a notch.

7. The vacuum cleaner according to claim 4, characterized in that, A guide pipe is provided on the side of the machine head housing near the barrel body. One end of the guide pipe is connected to the inlet, and the other end is set towards the filter. The airflow path from the inlet to the outlet flows through the guide pipe, the airflow contact element and the filter in sequence.

8. The vacuum cleaner according to claim 4, characterized in that, The conductive component includes a first conductive wire and a metal spring that is electrically connected to the first conductive wire. The metal spring includes a fixing part that is fixedly disposed relative to the inner wall of the machine head housing and an elastic part that extends from the fixing part to the pipe joint.

9. The vacuum cleaner according to claim 8, characterized in that, The elastic part is formed by protruding towards the pipe joint.

10. The vacuum cleaner according to claim 4, characterized in that, The vacuum cleaner also includes a manual operation section disposed on the housing of the head, the manual operation section being used to control the working state of the vacuum cleaner, and the manual operation section being electrically connected to the airflow contact element and / or the pipe connector via a second conductive wire.

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