CN212186356U

CN212186356U - Air duct assembly and cleaning tool thereof

Info

Publication number: CN212186356U
Application number: CN202020197340.9U
Authority: CN
Inventors: 邢振宇; 薛烨炜; 张川
Original assignee: Suzhou Cleva Electric Appliance Co Ltd
Current assignee: Suzhou Cleva Electric Appliance Co Ltd
Priority date: 2019-12-27
Filing date: 2020-02-21
Publication date: 2020-12-22
Anticipated expiration: 2030-02-21
Also published as: WO2021128887A1

Abstract

The utility model discloses an air duct subassembly, including first air duct, second air duct, connection first air duct reaches the joining in marriage of second air duct connects, set up in join in marriage the handle that connects in order to supply to grip, the air duct subassembly still contains the static conduction body, the static conduction body include first static portion of leading, with the third static portion of leading that first static portion set up relatively and be located first static portion of leading with static portion is led to second between the static portion is led to the third, static portion is led to the second with set up in the static release contact of handle, first static portion of leading with first air duct contact, third static portion of leading with second air duct contact, the utility model discloses can take precautions against air duct subassembly accumulation static.

Description

Air duct assembly and cleaning tool thereof

Technical Field

The utility model relates to an air duct subassembly and burnisher thereof belongs to small household appliances and makes technical field.

Background

When the cleaning tool is in the operation process, fine particles such as dust, flour and the like on the ground can rub against the inner wall of the whole air duct of the cleaning tool when being sucked, a large amount of electrons are gathered, static electricity is generated, and the weather is particularly obvious when dry.

For example, the cleaning tool usually includes an air inlet pipe, one end of the air inlet pipe is connected with the working head, the other end of the air inlet pipe is connected with the main machine through parts such as a hose and the like, and an inner cavity of the air inlet pipe forms part of an air duct of the cleaning tool. When the cleaning tool is in operation, dust-containing airflow can rub against the inner wall of the air inlet pipe and the inner wall of the hose, static electricity is easily generated, and especially when the inner wall of the air inlet pipe is made of metal, if the cleaning tool works for a long time, the static electricity is accumulated, and a user is in contact with the static electricity, the cleaning tool is likely to suffer from a large electric shock, and the experience of the user is greatly influenced.

Current burnisher mainly grips the handle through the user and in order realizing electrostatic discharge, specifically, the handle passes through wire and intake pipe electrostatic connection, grips the handle when the user, and static can be by the leading-in human body of handle to this has realized intake pipe and human equipotential, and static can not accumulate to the emergence of static phenomenon of hiring a hand has been avoided.

However, the above method has the following problems: the handle is not connected with the hose in an electrostatic way, and the dust-containing air flow can generate static electricity when passing through the hose, so that the possibility of electrostatic beating still exists.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem, an object of the present invention is to provide an air duct assembly, which can prevent the accumulation of static electricity.

In order to achieve the above object, an embodiment of the present invention provides an air duct assembly, including first air duct, second air duct, connection first air duct reaches the adapter of second air duct, set up in the adapter is with the handle that supplies to grip, its characterized in that still contains the static conduction body, the static conduction body include first static portion of leading, with the third static portion of leading that first static portion is relative to be set up leads static portion and is located first static portion of leading with second between the static portion of leading of third, the second lead static portion with set up in the static release contact of handle, first static portion of leading with first air duct contact, the third lead static portion with second air duct contact.

As a further improvement of an embodiment of the present invention, the first gas guide tube includes a metal tube, and the first static electricity conductive portion is in contact with an inner wall of the metal tube.

As a further improvement of an embodiment of the present invention, the first static conductive portion is formed as a hook, and the hook is connected to the inner wall of the metal tube.

As a further improvement of an embodiment of the present invention, the fitting head includes a fitting portion, the fitting portion is configured as a groove, and the hook is accommodated in the groove.

As a further improvement of an embodiment of the present invention, the electrostatic discharge member is elastically connected to the second static electricity conducting portion.

As a further improvement of an embodiment of the present invention, the electrostatic discharge part includes an extrusion portion, the second static conductive portion is formed as a spring structure, and the extrusion portion is abutted against the spring structure.

As a further improvement of an embodiment of the present invention, the second air duct is formed as a hose, and the third static conductive portion extends in the longitudinal direction until it is connected to the hose.

As a further improvement of an embodiment of the present invention, the third static electricity conducting portion includes a collar, and the hose cover is disposed on the collar.

In order to prevent the accumulation of static electricity, another object of the present invention is to provide a cleaning tool, the cleaning tool comprises a working head having an air suction opening, a handpiece having an air outlet, an air passage formed between the air suction opening and the air outlet, a first air duct extending in a longitudinal direction, a second air duct, a fitting connecting the first air duct and the second air duct, and a handle for holding, wherein the first air duct, the fitting connecting and the second air duct define a part of the air passage, the cleaning tool is characterized in that the cleaning tool further comprises a static electricity conducting body, the static electricity conducting body comprises a first static electricity conducting part, a third static electricity conducting part opposite to the first static electricity conducting part, and a second static electricity conducting part located between the first static electricity conducting part and the third static electricity conducting part, the second static electricity conducting part is in contact with a static electricity releasing member of the handle, the first static conductive part is in contact with the first air duct, and the third static conductive part is in contact with the second air duct.

In order to take precautions against accumulation static, another aim at of the utility model provides a cleaning tool, cleaning tool contain the working head that has the inlet scoop, have the aircraft nose of air outlet, form in the inlet scoop with gas circuit passageway between the air outlet, first air duct, second air duct, connection that lengthwise direction extends first air duct reaches the adapter of second air duct and the handle that supplies to grip, first air duct the adapter reaches the second air duct is injectd a part of gas circuit passageway, a serial communication port, the adapter structure is for leading the static body, just the adapter simultaneously with the electrostatic discharge spare of handle, first air duct reaches the second air duct contacts.

Compared with the prior art, the beneficial effects of the utility model reside in that: first air duct, the second air duct and connect the adapter of first air duct and second air duct and inject the partly of burnisher's airflow channel, burnisher still contains the static conduction body, this static conduction body simultaneously with first air duct, the static release contact of second air duct and handle, with this, when the burnisher moves, the dust-laden air current passes through first air duct, the static that produces when adapter and second air duct can in time be by the leading-in human body of static release of handle, static can not accumulate, thereby avoid appearing the static phenomenon of hiring one's hands.

Drawings

FIG. 1 is a schematic view of a cleaning tool according to an embodiment of the present invention;

FIG. 2 is a schematic view of the cleaning tool according to an embodiment of the present invention with the air duct and handle detached from the head;

FIG. 3 is an exploded view of a portion of a cleaning tool according to an embodiment of the present invention;

FIG. 4 is a schematic view of a fitting of a cleaning tool according to an embodiment of the present invention;

fig. 5 is a schematic structural view of an electrostatic conductor of a cleaning tool according to an embodiment of the present invention;

FIG. 6 is a partial cross-sectional view of a cleaning tool according to an embodiment of the present invention;

fig. 7 is a partially enlarged view of a portion a in fig. 6.

Detailed Description

The invention will be described in detail hereinafter with reference to exemplary embodiments shown in the drawings. Terms used in the exemplary embodiments are selected as general terms used as widely as possible, but in a specific case, terms arbitrarily selected by the applicant are also used, and in this case, meanings are mentioned in the corresponding detailed description section, so that the inventive concept should not be understood by literal meanings of the terms, but by given meanings of the terms.

While the concepts of the present invention are susceptible to various modifications and alternative embodiments, specific exemplary embodiments have been shown in the drawings and are described in detail in the written description. However, it is not intended to limit the inventive concept to the particular mode of practice, and it should be understood that all changes, equivalents, and substitutions that do not depart from the spirit and technical scope are intended to be embraced therein. In the description, certain details of the prior art are omitted when it is deemed that the nature of the inventive concept may be unnecessarily obscured.

Although terms such as "first", "second", etc. may be used to describe various elements, the elements are not limited to the above terms. The above terms are only used to distinguish one element from another.

In this specification, it will be understood that terms such as "comprising," "having," "including," or the like, are intended to specify the presence of stated features, integers, steps, actions, components, parts, or combinations thereof, and are not intended to preclude the presence or addition of one or more other features, integers, steps, actions, components, parts, or combinations thereof.

Terms such as "unit," "device," "component," "module," and the like described in the specification refer to an element for performing at least one function or operation, and may be implemented in hardware or software or a combination of hardware and software. Furthermore, a plurality of "modules" or a plurality of "units" may be integrally formed as at least one processing module except for the "modules" or "units" which must be implemented as specific hardware.

Throughout the specification, it will also be understood that when an element is referred to as being "connected to" another element, it can be directly connected to or electrically connected to the other element, and intervening elements may also be present. In addition, when a portion "includes" an element, another element may be further included without excluding the presence of the other element unless otherwise specified.

The exemplary embodiments will be described below to explain aspects of the specification by referring to the figures. When an expression such as "at least one" precedes a list of elements, it modifies the entire list of elements without modifying the individual elements of the list.

An embodiment of the present invention provides a cleaning tool, which comprises an air duct assembly, and a preferred embodiment is shown in fig. 1 to 7, in which the cleaning tool is specifically exemplified by a vertical electric vacuum cleaner. The cleaning tool of the present embodiment is described with reference to an upright electric vacuum cleaner illustrated in the drawings, but it should be noted that, in other embodiments, the cleaning tool is not limited to the upright electric vacuum cleaner described in the embodiments, and may also be a handheld vacuum cleaner or other cleaning tools provided with an air duct assembly, and details thereof are not repeated here.

Referring to fig. 1, the vacuum cleaner comprises a working head, a handpiece 11, a first air duct 2, a handle 3 and a second air duct 4.

In this embodiment, the working head may be the floor brush assembly 12 or a suction nozzle (not shown), specifically, when the vacuum cleaner is in a first working state, that is, when the head 11 is mounted on the frame 7, the vacuum cleaner performs a cleaning operation through the floor brush assembly 12, at this time, a dust-containing airflow enters the vacuum cleaner from the floor brush assembly 12, and the floor brush assembly 12 includes an air suction opening 14; when the cleaner is in the second working state, i.e. when the handpiece 11 is separated from the frame 7, a user can mount a suction nozzle (not shown) on the interface of the first air duct 2 and carry the handpiece 11 to perform cleaning operation, at this time, the working head is embodied as a suction nozzle, and dust-containing air flow enters the cleaner from the suction nozzle.

The vacuum cleaner 11 further includes an air outlet 13 and an air path channel formed between the air suction opening and the air outlet 13, where the air path channel is also formed in a path for air flowing inside the vacuum cleaner. When the dust collector works, dust-containing airflow enters the dust collector from the air suction opening, flows along the air passage, is filtered and purified, and is discharged from the air outlet 13.

Referring to fig. 2, in this embodiment, the first air duct 2 is specifically an air inlet duct extending in the longitudinal direction, and the first air duct 2 is detachably mounted on the frame 7. Specifically, the first air duct 2 is configured as a metal tube 21, and a portion of the air passage channel is enclosed by an inner wall of the metal tube 21, that is, in the process that the dusty airflow flows from the air suction opening to the air outlet 13, the dusty airflow flows through the first air duct 2, and dust and foreign matters in the airflow rub against the metal tube 21, so that static electricity is generated on the inner wall of the metal tube 21.

The second air duct 4 is embodied as a flexible tube 41 in this embodiment, and preferably, the flexible tube 41 is a steel wire flexible tube. The dust collector also comprises an adapter 5, wherein one end of the adapter 5 is connected with the first air duct 2, and the other end of the adapter 5 is connected with the second air duct 4. Specifically, the fitting 5 and the second gas tube 4 define a part of the gas path channel, that is: after the dust-containing airflow passes through the first air duct 2, the dust and foreign matters in the airflow rub against the hose 41 through the fitting head 5 and the second air duct 4, so that static electricity is generated on the inner wall of the second air duct 4. It should be noted that the configuration of the second airway tube 4 as the flexible tube 41 is only one example, and in other examples, the second airway tube 4 may be other types of airway tubes such as a gold extension tube.

In an embodiment of the present invention, the adapter 5 may be configured as an electrostatic conductor, and the adapter 5 is in contact with the inner wall of the first air duct 2 and the inner wall of the second air duct 4 simultaneously. Specifically, the handle 3 further comprises an electrostatic discharge member 31, the electrostatic discharge member 31 is in contact with the fitting head 5, so that in the process that the dust-containing airflow flows from the air suction opening to the air outlet 13, static electricity generated by friction between dust and the like and the first air duct 2 and the second air duct 4 is transferred to the electrostatic discharge member 31 of the handle 3 through the fitting head 5 and is discharged by a human body, and therefore the static electricity is not easy to accumulate, and the phenomenon of electrostatic hands-off can be prevented.

In the preferred embodiment of the present invention, the vacuum cleaner further comprises an electrostatic conducting body 6, the electrostatic conducting body 6 is detachably mounted on the fitting head 5, the electrostatic conducting body 6 is connected to the electrostatic discharge member 31 of the handle 3, the first air duct 2 is connected to the second air duct 4, the electrostatic conducting body 6 comprises a first electrostatic conducting portion 61, a third electrostatic conducting portion 63 oppositely disposed to the first electrostatic conducting portion 61, and a second electrostatic conducting portion 62 located between the first electrostatic conducting portion 61 and the third electrostatic conducting portion 63, the second electrostatic conducting portion 62 is connected to the electrostatic discharge member 31 of the handle, the first electrostatic conducting portion 61 is connected to the first air duct 2, and the third electrostatic conducting portion 63 is connected to the second air duct 4. The static electricity discharging member 31 is at least partially exposed to the outside of the handle 3, the static electricity discharging member 31 is formed as a part of the handle 3, the static electricity discharging member 31 is provided as a static electricity conductor, which is made of a metal material or a non-metal conductive material, and specifically, the handle 3 further includes a holding portion 32, and the electrostatic discharge member 31 constitutes a part of the holding portion 32, so that, when the dust collector works, the dust-containing airflow passes through the air passage, static electricity is generated on the inner walls of the first air duct 2 and the second air duct 4, and the static electricity is transferred to the static electricity discharging part 31 through the static electricity conductor 6, thereby, when the user holds the handle 3, the user's hand can contact the electrostatic discharging member 31, therefore, the static electricity on the static electricity releasing piece 31 is conducted to the human body, and the phenomenon of electrostatic beating is avoided. It should be noted that the electrostatic conductor 6 is mounted on the fitting 5 only as a preferred embodiment, and in other embodiments, the electrostatic conductor 6 may be welded with the electrostatic discharge member 31, and is not limited to being mounted on the fitting 5.

The electrostatic conductor 6 comprises a first electrostatic conductive part 61, and the first electrostatic conductive part 61 is in contact with the inner wall of the first gas-guide tube 2. In particular, the first static conductive part 61 is configured as a hook, and correspondingly, the mating head 5 is provided with a mating part, in this embodiment, specifically a groove, and the first static conductive part 61 can be matched with the mating part to connect the static conductive body 6 and the mating head 5, particularly, the mating part includes a first mating part 51, and the hook is connected with the first mating part 51. Meanwhile, the clamping hook is clamped with the inner wall of the first air duct 2, so that the first air duct 2 is connected with the electrostatic conductor 6 in an electrostatic mode. It should be noted that the electrostatic conductor 6 is connected to the fitting 5 by a snap-fit connection, but in other embodiments, the electrostatic conductor 6 may be connected to the fitting by welding or other connection means.

The electrostatic conductor 6 further includes a second static conductive portion 62, the second static conductive portion 62 is integrally formed with the first static conductive portion 61, and the second static conductive portion 62 is elastically connected to the electrostatic discharge member 31. Specifically, the electrostatic discharger 31 includes a pressing portion 311, the second static conductive portion 62 is configured as a spring structure, the pressing portion 311 contacts with the spring structure to realize electrostatic connection between the second static conductive portion 62 and the electrostatic discharger 31, and the first static conductive portion 61 and the electrostatic discharger 31 realize electrostatic connection due to the second static conductive portion 62 and the first static conductive portion 61 being integrally formed. In the present embodiment, the pressing portion 311 is configured to be a column, and the spring structure is configured to be a Z-shape, and the pressing portion 311 pushes against the spring structure to achieve stable contact between the electrostatic discharging member 31 and the second conductive portion 62. It should be noted that, in other embodiments, the pressing portion 311 may also be welded to the second conductive static portion 62, and is not limited to the detachable connection described in this embodiment. Meanwhile, it should be noted that the fitting head 5 further includes a second fitting portion 52, the second fitting portion 52 is also configured as a groove, and the second static conductive portion 62 is accommodated in the second fitting portion 52, so that the static conductive body 6 is more stably mounted on the fitting head 5.

The electrostatic conductor 6 further comprises a third electrostatic conducting part 63, the third electrostatic conducting part 63 and the second electrostatic conducting part 62 are integrally formed, and the third electrostatic conducting part 63 is electrostatically connected with the hose 41 of the second air duct 4, so that the second air duct 4 is electrostatically connected with the electrostatic releasing member 31. In this embodiment, the third static conductive part 63 extends along the longitudinal direction until being connected to the hose 41, so that the static conductive body 6 does not affect the installation of other parts in the vacuum cleaner, and the length of the third static conductive part 63 is the shortest, thereby saving more cost. Specifically, the third static conductive portion 63 includes an extending portion 631 and an abutting portion 632, the extending portion 631 extends in a longitudinal direction to an opening of the second air guiding tube 4, and the abutting portion 632 is welded to a spiral steel wire (not shown) of the hose 41, so that static electricity on the inner wall of the second air guiding tube 4 can be transferred from the third static conductive portion 63 to the second static conductive portion 62, and from the second static conductive portion 62 to the static electricity discharging member 31. It should be noted that, in other embodiments, the extension portion 631 is not limited to extend along the longitudinal direction, and only needs to extend along the direction close to the second air duct 4, and the abutting portion 632 may not be welded to the spiral steel wire of the flexible tube 41, and in other embodiments, the abutting portion 632 may be configured as a collar, and the flexible tube 41 is sleeved on the collar.

It should be noted that, in other embodiments, the fitting 5 may also be configured to include a metal pipe, when a dust-containing airflow passes through the fitting 5, dust and foreign matters in the airflow may also rub against the inner wall of the metal pipe of the fitting 5, so that static electricity is accumulated on the fitting 5, and the static electricity on the fitting 5 may also be transmitted to the static electricity discharge member 31 through the static electricity conductor 6 and discharged by a human body.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an air duct subassembly, includes first air duct, second air duct, connection first air duct reaches the joint of second air duct set up in the joint is in order to supply the handle that grips, its characterized in that still contains static conduction body, static conduction body include first static portion of leading, with the static portion is led to the third that first static portion of leading set up relatively and be located first static portion of leading with the static portion is led to the second between the static portion is led to the third, the static portion is led to the second with set up in the static release contact of handle, first static portion of leading with first air duct contact, the static portion of leading with the second air duct contact.

2. The airway assembly of claim 1, wherein the first airway tube comprises a metal tube, and the first static-conductive portion is in contact with an inner wall of the metal tube.

3. The airway assembly of claim 2, wherein the first static-conductive portion is formed as a catch that engages an inner wall of the metal tube.

4. The air duct assembly of claim 3, wherein the mating head includes a mating portion configured as a recess into which the catch is received.

5. The airway assembly of claim 1, wherein the static discharge member is resiliently coupled to the second static-conductive portion.

6. The airway tube assembly of claim 5, wherein the static discharge member comprises a pressing portion, and the second static discharge portion is formed as a spring structure, and the pressing portion abuts against the spring structure.

7. The airway assembly of claim 1, wherein the second airway tube is formed as a flexible tube, and the third static conductive portion extends lengthwise until connected to the flexible tube.

8. The airway tube assembly of claim 7, wherein the third static-electricity conducting portion comprises a collar, and wherein the hose is sleeved to the collar.

9. A cleaning tool comprises a working head with an air suction opening, a machine head with an air outlet, an air passage channel formed between the air suction opening and the air outlet, a first air duct extending in the longitudinal direction, a second air duct, an adapter connecting the first air duct and the second air duct, and a handle for holding, wherein the first air duct, the adapter and the second air duct define a part of the air passage channel, the cleaning tool is characterized in that the cleaning tool further comprises a static electricity conductor which comprises a first static electricity conducting part, a third static electricity conducting part arranged opposite to the first static electricity conducting part, and a second static electricity conducting part positioned between the first static electricity conducting part and the third static electricity conducting part, the second static electricity conducting part is contacted with a static electricity releasing part of the handle, and the first static electricity conducting part is contacted with the first air duct, the third conductive static portion is in contact with the second air duct.

10. The utility model provides a cleaning tool, cleaning tool contain the working head that has the inlet scoop, the aircraft nose that has the air outlet, form in the inlet scoop with gas circuit passageway between the air outlet, first air duct, second air duct, the connection that the lengthwise direction extends first air duct reaches the adapter of second air duct and the handle that supplies to grip, first air duct the adapter reaches the second air duct is injectd a part of gas circuit passageway, its characterized in that, the adapter structure is for leading the static body, just the adapter simultaneously with the static release piece of handle, first air duct reaches the contact of second air duct.