WO2022021599A1

WO2022021599A1 - Filtering device and vacuum cleaner

Info

Publication number: WO2022021599A1
Application number: PCT/CN2020/118894
Authority: WO
Inventors: 李迎亮; 刘海平; 朱锦昌
Original assignee: 天佑电器（苏州）有限公司
Priority date: 2020-07-27
Filing date: 2020-09-29
Publication date: 2022-02-03
Also published as: CN214208236U

Abstract

A filtering device and a vacuum cleaner. The filtering device comprises a dust filtering fence (10), a filter assembly (20), an elastic element (30) and a locking member (40), a first positioning portion (11) being provided at an end portion of the dust filtering fence (10); the filter assembly (20) is sleeved outside the dust filtering fence (10); the elastic element (30) is sandwiched between the dust filtering fence (10) and the filter assembly (20); the locking member (40) comprises a second positioning portion (41) and a third positioning portion (42), the third positioning portion (42) is limited to the filter assembly (20), and the second positioning portion (41) is detachably fitted with the first positioning portion (11); and when the locking member (40) is deviated from a locked position, the second positioning portion (41) is at least partially detached from the first positioning portion (11), and the elastic element (30) provides an acting force on the filter assembly (20) so that the filter assembly (20) is detached from the dust filtering fence (10). The present invention effectively avoids the situation of seal failure during assembly of the filter assembly (20).

Description

Filters and vacuum cleaners

technical field

The utility model relates to a filter device and a vacuum cleaner, in particular to a filter device and a vacuum cleaner which can avoid sealing failure during assembly.

Background technique

A vacuum cleaner is a common household cleaning device that separates dust and debris from the air. By far, filtration is the most common and effective solution for gas and dust separation. The filter device needs to be frequently removed from the vacuum cleaner during use. For example, a large amount of dust will accumulate on the filter device of the vacuum cleaner after being used for a period of time.

The existing replaceable filter installs the filter on the dust filter bar through the chassis, and there may be various installation and use states, including the completely uninstalled state, the incompletely installed state and the fully installed state, where the completely uninstalled state refers to the chassis. Disengaged from the dust filter bar, the filter is not attached to the vacuum cleaner; the incompletely installed state means that the chassis is matched with the dust filter bar, the filter has been attached to the vacuum cleaner but not installed in place, resulting in the failure of the seal between the chassis and the dust filter bar. The phenomenon of dust leakage; the fully installed state means that the chassis is matched with the dust filter bar, the filter has been attached to the vacuum cleaner and installed in place, and the seal between the chassis and the dust filter bar is effective and can be used normally.

Utility model content

The utility model provides a filter device and a vacuum cleaner which can avoid sealing failure during assembly.

The utility model provides a filter device, which comprises:

a dust filter bar, the end of the dust filter bar is provided with a first positioning part;

a filter assembly, which is sleeved outside the dust filter column;

an elastic element, which is sandwiched between the dust filter bar and the filter assembly;

a locking member, which includes a second positioning portion and a third positioning portion, the third positioning portion is restricted on the filter assembly, and the second positioning portion is detachably engaged with the first positioning portion;

Wherein, when the fastener is in the locking position, the elastic element is in a compressed state, and the second positioning portion cooperates with the first positioning portion to connect the filter assembly to the dust filter bar; the When the locking member deviates from the locking position, the second positioning portion is at least partially disengaged from the first positioning portion, and the elastic element provides a force on the filter assembly to make the filter assembly free from the filter assembly. The dust filter bar is disengaged.

Optionally, the locking member is a knob, the knob rotates in a first rotation direction to reach the locking position, and the knob rotates in a second rotation direction to unlock from the locking position.

Optionally, the first positioning portion includes two separate annular rib plates that are detachably fitted with the knob, and when the knob is matched with the annular rib plate, the two Separate annular rib plates are located on both sides of the rotating shaft of the knob.

Optionally, the filter assembly includes a separate filter element and a chassis, and the third positioning portion is limited on the chassis.

Optionally, the elastic element includes a compression spring or an elastic sheet, one end of the compression spring or elastic sheet is fixed on the dust filter bar or the chassis, and the other end of the compression spring or elastic sheet is a free end.

Optionally, the elastic element includes a torsion spring, one end of the torsion spring is fixed on the dust filter bar or the chassis, and the other end of the torsion spring is fixed on the knob.

The utility model also provides a filter device, which includes:

a filter assembly, which is sleeved outside the dust filter column;

Wherein, when the locking member is in the locking position, the second positioning portion cooperates with the first positioning portion to connect the filter assembly to the dust filter bar; when the locking member deviates from the locking position, The second positioning portion is disengaged from the first positioning portion, and the filter assembly is disengaged from the dust filter bar under the action of its own gravity.

Optionally, the first positioning portion is an annular rib, and the first positioning portion includes a limiting rib, a supporting rib, and a climbing rib. In the first rotation direction, the climbing rib is The plate is located upstream of the support rib, and the limiting rib is located downstream of the support rib.

The utility model also provides a vacuum cleaner including the filtering device.

Compared with the prior art, when the filter assembly is installed in the present invention, the filter assembly can automatically pop up or fall off when the locking member deviates from the locking position, so that the user can find and fix the filter assembly in time. Therefore, the situation of sealing failure of the filter assembly during the assembly process is effectively avoided, and the failure of the motor caused by the poor sealing is also avoided. In the utility model, the locking member is set as a knob, and the rotary operation of the knob can make the filter assembly move between the locking position and the deviating locking position, which is convenient for the user to operate. The utility model separates the filter element and the chassis, which is convenient for assembly. The first positioning part of the utility model includes a climbing rib plate, which is beneficial for the user to achieve locking through a rotating operation.

Description of drawings

1 is an exploded schematic view of a filter device and a lower cover of the present invention;

Fig. 2 is the three-dimensional structure diagram of the dust filter bar in the filter device of the present invention;

Fig. 3 is the top view of Fig. 2;

4 is a first installation state diagram of the first embodiment of the filter device of the present invention, wherein the locking member is inserted into the through hole, the elastic element is a compression spring, and the compression spring is not yet compressed;

Fig. 5 is the enlarged schematic diagram of area A in Fig. 4;

Fig. 6 is the second installation state diagram of the first embodiment of the filter device of the present invention, wherein the arm moves on the climbing rib, and the compression spring has been compressed;

Fig. 7 is the enlarged schematic diagram of area B in Fig. 6;

Fig. 8 is the third installation state diagram of the first embodiment of the filter device of the present invention, wherein the arm has moved to the support rib plate, and the compression spring is in the maximum compression state;

Fig. 9 is the enlarged schematic diagram of area C in Fig. 8;

Fig. 10 is the installation state diagram of the second embodiment of the filter device of the present invention, wherein the climbing rib is 90 degrees;

Fig. 11 is the enlarged schematic diagram of area D in Fig. 10;

12 is a schematic structural diagram of the third embodiment of the filter device of the present invention in which the elastic element is an elastic sheet;

13 is a schematic structural diagram of the third embodiment of the filter device of the present invention in which the elastic element is a torsion spring;

Fig. 14 is the installation state diagram of the third embodiment of the filter device of the present invention, wherein the arm has been moved to the support rib plate, the elastic element is a shrapnel, and the shrapnel is in a state of maximum compression;

Fig. 15 is an enlarged schematic view of region E in Fig. 14;

16 is a view of the installation state of the third embodiment of the filter device of the present invention, wherein the arm has moved to the support rib plate, the elastic element is a torsion spring, and the torsion spring is in a state of maximum compression;

FIG. 17 is an enlarged schematic view of the area F in FIG. 16 .

detailed description

The present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise" etc. The positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , so it cannot be construed as a limitation of the present invention.

In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features The features are not in direct contact but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

1-17 , the vacuum cleaner of the present invention includes a dust collecting bucket, a body assembly detachably connected to the dust collecting bucket and accommodating a motor, and a filter device detachably connected to the body assembly. The vacuum cleaner of the utility model can be any one of a barrel vacuum cleaner, a vertical vacuum cleaner or a horizontal vacuum cleaner, and a replaceable filter assembly is arranged in the vacuum cleaner.

The utility model provides a filter device, which comprises:

The dust filter bar 10, the end of the dust filter bar 10 is provided with a first positioning part 11;

The filter assembly 20 is sleeved outside the dust filter column 10;

an elastic element 30, which is sandwiched between the dust filter bar 10 and the filter assembly 20;

The locking member 40 includes a second positioning portion 41 and a third positioning portion 42 , the third positioning portion 42 is restricted on the filter assembly 20 , the second positioning portion 41 and the first positioning portion 11 releasably cooperate;

Wherein, when the fastener 40 is in the locking position, the elastic element 30 is in a compressed state, and the second positioning portion 41 cooperates with the first positioning portion 11 to connect the filter assembly 20 to the dust filter When the locking member 40 deviates from the locking position, the second positioning portion 41 and the first positioning portion 11 are at least partially disengaged, and the elastic element 30 provides a force to the filter assembly 20 to disengage the filter assembly 20 from the dust filter bar 10 .

In another embodiment of the present invention, the dust filter bar 10 is detachably connected to the body assembly, for example, the dust filter bar 10 is connected to the lower cover 1 of the body assembly. The dust filter bar 10 includes several longitudinal ribs and several transverse ribs and allows air to flow therethrough. When the dust filter bar 10 is connected to the body assembly, the dust filter bar 10 extends into the dust collecting bucket (not shown). The dust filter bar 10 can be directly connected to the fuselage assembly, or can be connected to the fuselage assembly through an adapter.

In another embodiment of the present invention, the end of the dust filter bar 10 is provided with a through hole 12 , and the second positioning portion 41 of the locking member 40 penetrates through the through hole from the outside of the dust filter bar 10 . After the hole 12 is displaced, the second positioning portion 41 is dislocated from the through hole 12 , so that the second positioning portion 41 and the first positioning portion 11 abut against each other. The shape of the through hole 12 is adapted to the shape of the fastener 40 , the shape of the through hole 12 is a non-circular through hole, and the through hole 12 has a first radial dimension in the first radial direction, and has a first radial dimension in the second radial direction. The direction has a second radial dimension, and the first radial dimension is not equal to the second radial dimension. The through hole 12 can be a single regular shape through hole, or a compound hole, which is formed by combining a plurality of holes with different shapes. For example, the through hole 12 in this embodiment is formed by combining a round hole and a long and narrow through hole. . The through hole 12 enables a portion of the fastener 40 to be clamped outside the through hole 12 , and the second positioning portion 41 of the fastener 40 penetrates through the through hole 12 .

In another embodiment of the present invention, the locking member 40 is a knob, and the knob rotates along a first rotation direction to reach the locked position, and the knob rotates along a second rotation direction to unlock from the locked position.

In another embodiment of the present invention, the first positioning portion 11 includes two separate annular rib plates that are detachably fitted with the knob, and the knob and the annular rib are located between the knob and the annular rib. When the plates are matched, the two separated annular rib plates are located on both sides of the rotating shaft of the knob.

In another embodiment of the present invention, the second positioning portion 41 is a rotatable arm extending in a direction perpendicular to the rotation axis. When the knob is in the locked position, the rotatable arm is respectively connected to The two annular ribs abut against each other.

In another embodiment of the present invention, the filter assembly 20 includes a filter element 22 and a bottom plate 23 which are formed separately, and the third positioning portion 42 is limited on the bottom plate 23 . The utility model separates the filter element 22 and the chassis 23, which is convenient for assembly.

The filter element 22 may be made from a variety of suitable filter materials including, but not limited to, paper; cloth; fiberglass materials; splitfiber materials; material; felt material; natural fiber filter material; the filter element 22 may be pleated or pleated, or it may be non-pleated according to actual conditions. Regardless of the material used to form the filter element 22, the filter element 22 is folded into multiple pleats and formed into a generally cylindrical or tube-like shape with a corrugated or pleated appearance, thereby increasing the exposed surface area. Such folds increase the area of the filter element 22 in contact with the airflow during operation of the vacuum apparatus, thereby effectively improving filtration without reducing airflow.

In another embodiment of the present invention, the elastic element 30 includes a compression spring 31 or an elastic sheet 32, and one end of the compression spring 31 or the elastic sheet 32 is fixed on the dust filter bar 10 or the chassis 23, so the The other end of the compression spring 31 or the shrapnel 32 is the free end. When the chassis 23 and the filter element 22 are assembled to the dust filter bar 10, the free end of the compression spring 31 or the shrapnel 32 abuts the chassis 23, and is connected between the chassis 23 and the dust filter. The spacing between the columns 22 is constantly getting smaller and is in a state of elastic compression to accumulate the elastic force that keeps the chassis 23 away from the dust filter column 10. When the knob is not installed in place, the elastic force of the elastic element 30 can make the chassis 23 It automatically pops up in the direction away from the dust filter bar 10 . The number of the compression springs 31 or elastic pieces 32 can be set as required, and can be one or more. In order to keep the pressing force of the compression spring 31 or the elastic sheet 32 in a predetermined direction, a guide groove for guiding the movement of the compression spring 31 or the elastic sheet 32 can be provided on the dust filter bar 10 .

In another embodiment of the present invention, the elastic element 30 includes a torsion spring 33, one end of the torsion spring 33 is fixed on the dust filter bar 10 or the chassis 23, and the other end of the torsion spring 33 fixed on the knob. The torsion spring 33 provides the knob with a reverse restoring force, so that the knob returns to the initial position when the knob is not installed in place, so that the second positioning portion 41 is disengaged from the through hole 12 .

In another embodiment of the present invention, the first positioning portion 11 includes a limiting rib 111 , a supporting rib 112 and a climbing rib 113 . In the first rotation direction, the climbing rib 113 is located upstream of the support rib 112 , the limiting rib 111 is located downstream of the support rib 112 , and a protruding point 114 is provided at the end of the climbing rib 113 .

In another embodiment of the present invention, through the protruding point 114, the torsion spring 33 can not be automatically reset at the locking position, and the rotating arm of the knob will stop at the protruding point after jumping over the protruding point 114 in the first rotation direction. 114, and when the force exerted on the knob in the second rotation direction reaches a predetermined magnitude, the arm jumps over the protuberance 114 and returns to the initial position.

In another embodiment of the present invention, one end of the torsion spring 33 is fixed on the chassis 23, and the other end of the torsion spring 33 is fixed on the knob, so that the chassis 23 and the knob always maintain a relative position without (that is, when the chassis 23 is not installed, the knob returns to the initial position through the reset function of the torsion spring 33. When the chassis 23 is installed, when the knob is not rotated to the top of the climbing rib 113 of the dust filter 10, the torsion spring The reset function of 33 makes the knob return to the initial position of installation, so that the filter assembly 20 automatically falls off, which is convenient for customers to find and tighten the knob.

In another embodiment of the present invention, one end of the torsion spring 33 is fixed on the dust filter bar 10, the other end of the torsion spring 33 is fixed on the knob, one end of the torsion spring 33 is fixed on the knob, and one end is fixed on the knob. On the dust filter bar 10, keep the relative position unchanged. In this way, by rotating the knob, the knob will be subjected to the reaction force of the torsion spring. When the knob is not rotated to the top of the dust filter bar climbing rib 113, the reset function of the torsion spring 33 will automatically return to the initial position, so that the filter assembly 20 will fall off automatically. This makes it easier for the customer to find and tighten the knob.

In another embodiment of the present invention, the included angle of the climbing rib 113 relative to the cross section of the dust filter bar 10 is 30°-90°. The smaller the included angle is, when the knob is assembled, the rotation of the knob will drive the arm to slide along the slope, and the climbing rib 113 provides the knob to transition from the deviated locking position to the locking position. Glides more smoothly. In order to further improve the climbing smoothness of the jib, a material with better lubricity can be used to make the knob, or lubricating oil can be applied between the jib and the climbing rib.

During the installation process, the dust filter bar 10 is first fixed on the machine head assembly, then the elastic element 30 is installed on the bottom of the dust filter bar 10, the filter element 22 is installed outside the dust filter bar 10, and then the chassis 23 is installed. Then, rotate the knob according to the first rotation direction, and tighten the filter element 22 through the climbing rib 113 of the dust filter bar 10. After crossing the climbing rib 113 and overcoming the ejection force of the elastic element 30, the rotating arm of the knob and the dust filter bar are in contact with each other. The supporting ribs 112 are abutted and fitted to reach the tightened state. During this process, the elastic element 30 is compressed from the initial state. A first sealing member, for example, a first sealing member, is sandwiched between the chassis 23 and the filter element 22 . In the tightened state, the base plate and the filter element are sealedly connected through the first sealing member, and a second sealing member 50 is sandwiched between the knob and the base plate, and the second sealing member 50 is used to seal the connection. The knob is sealed with the chassis 23 .

During the installation process, when the knob does not go over the top of the climbing rib 113 (eg, the protruding point 114 ), the user stops the operation. In this case, the chassis 23 will automatically bounce up due to the ejection force of the elastic element 30 and the guiding effect of the climbing rib 113 ; that is, the filter core 22 will automatically fall off without the support of the chassis 23 . In this way, the user can be effectively reminded to find out that the filter element 22 and the chassis 23 are not assembled properly and re-installed in time before use, which can effectively avoid the leakage of dust caused by the failure of the sealing of the filter assembly 20, so as to ensure the normal operation of the motor. Work.

In another embodiment of the present invention, the elastic element 30 can also be omitted as required, and the self-gravity is used for fool-proof setting. When the ejection force on the chassis 23 (the self-gravity of the filter assembly 20 ) is greater than the frictional force, the chassis 23 It can fall off automatically.

The utility model also provides a vacuum cleaner, which includes:

The filter assembly 20 is sleeved outside the dust filter column 10;

Wherein, when the locking member 40 is in the locking position, the second positioning portion 41 cooperates with the first positioning portion 11 to connect the filter assembly 20 to the dust filter bar 10; the locking member 40 When deviating from the locking position, the second positioning portion 41 is disengaged from the first positioning portion 11 , and the filter assembly 20 is disengaged from the dust filter bar 10 under the action of its own gravity.

In another embodiment of the present invention, when the chassis 23 cannot fall off automatically by its own gravity, an elastic element 30 needs to be added to increase the ejection force to help it fall off.

In another embodiment of the present invention, the first positioning portion 11 is an annular rib, and the first positioning portion 11 includes a limiting rib 111 , a supporting rib 112 and a climbing rib 113 . In the first rotation direction, the climbing rib 113 is located upstream of the supporting rib 112 , and the limiting rib 111 is located downstream of the supporting rib 112 .

In another embodiment of the present invention, the included angle of the climbing rib 113 relative to the cross section of the dust filter bar 10 is 30°-90°. As shown in FIG. 11 , the climbing rib 113 is opposite to The included angle between the cross section of the dust filter bar 10 is 90°. When the angle is large, the knob can be pressed first, and when the surface of the arm and the support rib 112 is matched to the height of the support rib 112 of the dust filter bar 10 , the knob can be rotated to make the arm against the support rib 112 . If the elastic element 30 is not provided in the filter device, if it is not pressed in place, the chassis 23 will fall off automatically by the self-gravity of the filter assembly 20 , and the filter element 22 will also fall off automatically because there is no support from the chassis 23 . If the elastic element 30 is provided in the filter device, if it is not pressed in place, the chassis 23 will automatically fall off by superimposing the ejection force of the elastic element 30 by the self-gravity of the filter assembly 20, and the filter element 22 will also automatically fall off because there is no support from the chassis 23.

In another embodiment of the present invention, the smaller the included angle is, when the knob is rotated for assembly, the rotation of the knob will drive the arm to slide along the slope, and the climbing rib 113 provides the knob to lock from the deviation The fixed position transitions to the locked position, and the smaller the included angle, the smoother the arm slides. In order to further improve the climbing smoothness of the jib, a material with better lubricity can be used to make the knob, or lubricating oil can be applied between the jib and the climbing rib 113 .

To sum up, when the filter assembly is installed in the present invention, when the locking member deviates from the locking position, the filter assembly can automatically pop up or fall off, so that the user can find and fix the filter assembly in time, thereby effectively This avoids the failure of the sealing of the filter assembly during the assembly process, and also avoids the poor dust suction effect caused by the poor sealing. In the utility model, the locking member is set as a knob, and the rotation operation of the rotation can make the filter assembly move between the locking position and the deviating locking position, which is convenient for the user to operate. The utility model separates the filter element and the chassis, which is convenient for assembly. The first positioning part of the utility model includes a climbing rib plate, which is beneficial for the user to achieve locking through a rotating operation.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made to those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present utility model has been described in detail through the above embodiments, the present utility model is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present utility model. Rather, the scope of the present invention is determined by the scope of the appended claims.

Claims

A filter device, characterized in that, comprising:

a dust filter bar (10), the end of the dust filter bar (10) is provided with a first positioning part (11);

a filter assembly (20), which is sleeved outside the dust filter column (10);

an elastic element (30) sandwiched between the dust filter bar (10) and the filter assembly (20);

A locking member (40) comprising a second positioning portion (41) and a third positioning portion (42), the third positioning portion (42) being restricted on the filter assembly (20), the second positioning portion (42) The part (41) is releasably matched with the first positioning part (11);

Wherein, when the locking member (40) is in the locking position, the elastic element (30) is in a compressed state, and the second positioning portion (41) cooperates with the first positioning portion (11) to make the filter The filter assembly (20) is connected to the dust filter bar (10); when the locking member (40) deviates from the locking position, the second positioning portion (41) and the first positioning portion (11) at least partially Disengagement, and the elastic element (30) provides a force on the filter assembly (20) to disengage the filter assembly (20) from the dust filter bar (10).
The filter device according to claim 1, characterized in that: the locking member (40) is a knob, the knob rotates along a first rotation direction to reach the locking position, and the knob rotates along a second rotation direction to rotate from The locked position is unlocked.
The filter device according to claim 2, characterized in that: the first positioning part (11) comprises two separated annular rib plates that are detachably fitted with the knob, and the knob is connected to the knob. When the annular rib plates are matched, the two separated annular rib plates are located on both sides of the rotating shaft of the knob.
The filter device according to claim 3, characterized in that: the second positioning portion (41) is a rotating arm extending in a direction perpendicular to the rotation axis, and when the knob is in the locked position, the The rotating arms are respectively abutted and matched with the two annular rib plates.
The filter device according to claim 1, characterized in that: the filter assembly (20) comprises a filter element (22) and a chassis (23) which are arranged separately, and the third positioning portion (42) is limited to the on the chassis (23).
The filter device according to claim 5, characterized in that: the elastic element (30) comprises a compression spring or an elastic sheet, and one end of the compression spring or elastic sheet is fixed on the dust filter bar or on the chassis (23) , the other end of the compression spring (31) or the elastic sheet (32) is a free end.
The filtering device according to claim 5, wherein the elastic element (30) comprises a torsion spring, one end of the torsion spring is fixed on the dust filter bar or the chassis, and the other end of the torsion spring is fixed on the dust filter bar or the chassis. fixed on the knob.
A filter device, characterized in that, comprising:

a dust filter bar (10), the end of the dust filter bar (10) is provided with a first positioning part (11);

a filter assembly (20), which is sleeved outside the dust filter column (10);

A locking member (40) comprising a second positioning portion (41) and a third positioning portion (42), the third positioning portion (42) being restricted on the filter assembly (20), the second positioning portion (42) The part (41) is releasably matched with the first positioning part (11);

Wherein, when the locking member (40) is in the locking position, the second positioning portion (41) cooperates with the first positioning portion (11) to connect the filter assembly (20) to the dust filter bar (10); when the locking member (40) deviates from the locking position, the second positioning portion (41) is disengaged from the first positioning portion (11), and the filter assembly (20) is in its It is separated from the dust filter bar (10) under the action of its own gravity.
The filter device according to claim 8, wherein the first positioning part (11) is an annular rib, and the first positioning part comprises a limit rib, a support rib and a climbing rib, In the first rotation direction, the climbing rib is located upstream of the supporting rib, and the limiting rib is located downstream of the supporting rib.
A vacuum cleaner, characterized in that it comprises the filtering device according to any one of claims 1-9.