CN114828720B - Cleaning device - Google Patents

Abstract

The invention provides a cleaner with improved cleaning performance of a filter. The filter member (40) has: a filter (41) having air permeability; and a first holder (50) and a second holder (60) which are made of a harder material than the filter (41) and are assembled so as to be detachable from each other. The filter (41) is fixed to the first holder (50) and the second holder (60) by being clamped between the outer peripheral surface of the cylindrical base (51) of the first holder (50) and the inner peripheral surface of the first cylindrical portion (63) of the second holder (60) in a state assembled to the first holder (50) and the second holder (60).

Description

Cleaner

Technical field

The present invention relates to a cleaner provided with a filter unit.

Background technique

The following Patent Document 1 discloses a cleaner. This cleaner is equipped with a filter part. The filter unit is composed of a breathable filter and a holder that is harder than the filter. The filter is sewn to the holder by thread etc.

existing technical documents

patent documents

Patent Document 1: Japanese Patent Application Publication No. 2018-68726

Contents of the invention

The problem to be solved by the invention

The structure of the filter unit in Patent Document 1 cannot separate the filter and the holder, so there is room for improvement in the cleaning performance of the filter.

An object of the present invention is to provide a cleaner with improved filter cleaning performance.

Means used to solve problems

One aspect of the invention is a cleaner. The cleaner is provided with: a motor having a drive shaft; a fan that is rotated by the driving force of the drive shaft; a main body housing that houses the motor and the fan inside; and an air suction port that is provided in The main body case allows the air flow generated by the fan to flow into the main body case; and a filter portion is detachably mounted on the main body case to cover the air suction port. To prevent dust from flowing into the main body case, the filter unit has: a filter having breathability; and a retaining member made of a material harder than the filter and detachable from each other. The first component and the second component are assembled separately, and the filter is clamped between the first component and the second component in a state where the first component is assembled to the second component. , thereby being fixed relative to the holder.

The second member may have an engaging portion that engages with the main body case, and the filter portion may be detachably engaged by the engaging portion with the main body case. Installed on the main body shell.

The second member may be detachable from the main body case in a state of being assembled to the first member.

The second member may be detachably attached to the main body casing by rotating relative to the main body casing about the rotation axis, and may be detachably attached to the main body casing by rotating in the direction of the rotation axis relative to the third member. A component is moved and assembled to the first component.

The second member may have a sealing portion that seals between itself and the main body case.

The first member may have a columnar part, and the filter may be held in a cylindrical shape by the columnar part.

The filter may be formed in a bag shape with an opening, and may be fixed to the first member such that the first member enters the inside of the filter, and the filter part may be configured such that the inside of the filter passes through the opening. It is installed on the main body shell in a manner that communicates with the air suction port.

It is also possible to have a swirl chamber that generates an air flow swirling around a swirl axis, and the inside of the swirl chamber is connected to the suction port and accommodates the filter device, and the filter passes through the first The component is held in a cylindrical shape centered on the rotation axis.

The second member may have an engaging portion disposed outside the swirl chamber and engaging with the main body case.

The second member may be formed in an annular shape, and may be arranged to surround the air inlet when viewed in an opening direction of the air inlet, and the second member may be mounted on an inner peripheral side thereof. The first member holds the filter between the inner peripheral surface of the second member and the first member.

The filter may be formed in a bag shape with an opening, the air inlet may be located behind an inner peripheral part of the second member, and the first member may be mounted with the opening facing rearward. In the state of the filter, the filter enters the inner peripheral side of the second member from the rear toward the front, is attached to the second member, and holds the filter between the filter and the second member.

In addition, any combination of the above structural elements and a form in which the expression of the present invention is converted between methods, systems, etc. are also effective as aspects of the present invention.

Effect of invention

According to the present invention, it is possible to provide a cleaner with improved filter cleaning performance.

Description of the drawings

FIG. 1 is a side cross-sectional view of the cleaner 1 according to Embodiment 1 of the present invention.

FIG. 2 is an enlarged sectional view of the main part of FIG. 1 .

FIG. 3 is a cross-sectional view of a portion other than the filter member 40 in FIG. 2 .

FIG. 4 is a cross-sectional view of the filter member 40 taken along a cross-sectional plane different from that in FIG. 3 (a cross-sectional plane shown along line A-A in FIG. 9(B) ).

Fig. 5 is a V-V cross-sectional view of Fig. 1 .

FIG. 6 is an exploded perspective view of the filter component 40 .

FIG. 7 is a perspective view of the filter component 40 .

FIG. 8(A) is a rear view of the first holder 50 of the filter member 40. Fig. 8(B) is a B-B cross-sectional view of Fig. 8(A). FIG. 8(C) is a front view of the first holder 50 .

Fig. 9(A) is a cross-sectional view taken along line A-A of Fig. 9(B). FIG. 9(B) is a rear view of the second holder 60 of the filter member 40. Fig. 9(C) is a C-C cross-sectional view of Fig. 9(B). FIG. 9(D) is a front view of the second holder 60.

Fig. 10 is a side cross-sectional view of cleaner 1A according to Embodiment 2 of the present invention.

FIG. 11 is an enlarged cross-sectional view of the filter member 40A of the cleaner 1A.

FIG. 12 is a cross-sectional view taken along line XII-XII of FIG. 10 .

FIG. 13 is an exploded perspective view of the filter member 40A.

FIG. 14 is a perspective view of the filter member 40A.

Detailed ways

In the following, the same or equivalent structural elements, components, etc. shown in the respective drawings are denoted by the same reference numerals, and repeated descriptions are appropriately omitted. The embodiments do not limit the invention but illustrate them. All features described in the embodiments and their combinations are not necessarily essential parts of the invention.

(Embodiment 1) Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 9 . This embodiment relates to a cleaner 1 . Cleaner 1 is a cordless and portable cyclone-type electric vacuum cleaner. Based on FIGS. 1 and 5 , the mutually orthogonal front and rear, up and down, and left and right directions in the cleaner 1 are defined. The front-rear direction is a direction parallel to the rotation axis (drive shaft) 6a of the motor 6. The left-right direction is defined based on the situation when the cleaner 1 is viewed from the front. The entirety of the rotation axis 6a and its extension is also referred to as a "central axis". In FIG. 2 , illustration of the dust box 3 and the fan cover 20 shown in FIG. 1 is omitted.

The outer casing of the cleaner 1 is composed of a main body casing 2 and a dust collecting box 3 . Both the main body case 2 and the dust box 3 are, for example, resin molded bodies. The dust box 3 is detachably connected and fixed to the front of the main body housing 2 . The dust box 3 has an air suction pipe part 3a and a swirl chamber 3c. The front end opening of the suction pipe part 3a is an suction port (dust box suction port). An extension pipe or a flexible hose (not shown) can be installed on the suction port. The suction pipe part 3a is provided below the swirl chamber 3c. The suction pipe part 3a and the rear end part of the swirl chamber 3c communicate with each other via the valve part 3b. The valve portion 3b allows the airflow from the suction pipe portion 3a to the swirl chamber 3c to pass, while blocking the airflow from the swirl chamber 3c to the suction pipe portion 3a. The air flow taken into the swirl chamber 3c from the air intake duct portion 3a becomes an air flow swirling around the swirl axis in the swirl chamber 3c. The axis of rotation is consistent with the central axis. The filter member 40 is detachably attached and accommodated inside the swirl chamber 3c. The rear end of the swirl chamber 3c is open. The filter member 40 is provided so as to cover the opening.

As shown in FIG. 5 , the main body case 2 has a left and right double-slit structure. That is, in the main body case 2, the left main body case 2f and the right main body case 2g, which are mutually independent components, are fixed and integrated with each other by screw fastening or the like. As shown in FIG. 1 , the main body case 2 has a housing portion 2a, a handle portion 2b, and a battery pack mounting portion 2c. The accommodating part 2a is a part corresponding to the front part of the main body case 2. The accommodation part 2a accommodates the motor 6, the dust collecting fan 9, the fan guide 10, and the fan cover 20. The handle portion 2b is a portion extending rearward from the upper end portion of the accommodating portion 2a. The operator holds the handle portion 2b to operate the cleaner 1. An operation panel (switch portion) 5 is provided on the upper surface of the handle portion 2b. Various switches provided on the operation panel 5 can start and stop the cleaner 1 and switch the air volume of the cleaner 1 . A lighting unit 8 such as an LED that illuminates the front is provided at a position in front of the operation panel 5 of the handle portion 2b. The battery pack mounting portion 2 c is a portion corresponding to the rear lower portion of the main body case 2 . The battery pack 4 serving as the power source of the cleaner 1 is detachably mounted on the battery pack mounting portion 2 c. Exhaust ports 2e are respectively provided on the left and right side surfaces of the rear end portion of the main body case 2.

As shown in FIG. 2 , the main body case 2 has a cylindrical portion 2 h protruding forward at a front end portion. The cylindrical part 2h is provided with an inwardly protruding flange part 2i. The flange portion 2i is a plate-shaped portion perpendicular to the front-rear direction. The flange portion 2i is provided to surround the central axis. The inner edge of the flange portion 2i is the opening edge of the air suction port (casing air suction port) 2d. The air intake port 2d is a circular through hole penetrating in the extending direction of the rotation shaft 6a with the central axis as the center. The air intake port 2d is formed across the left main body case 2f and the right main body case 2g. The air suction port 2d communicates with the space in the swirl chamber 3c. The front side of the air inlet 2d is covered with the filter member 40.

The motor 6 is a known brushed electric motor. The motor 6 is configured as a unit including a motor housing and bearings. The motor 6 operates with electric power supplied from the battery pack 4 . The rear end portion of the motor 6 is supported by the main body case 2 via an anti-vibration elastic body 7 . A dust collecting fan 9 is attached to the rotating shaft 6 a of the motor 6 . The dust collecting fan 9 rotates integrally with the rotating shaft 6a about the rotating shaft 6a. The rotating shaft 6a is also the central axis of the dust collecting fan 9. The dust collecting fan 9 is a centrifugal fan. The dust collecting fan 9 is accommodated in the internal space formed by the fan guide 10 and the fan cover 20 . The outer diameters of the fan guide 10 and the fan cover 20 are larger than the outer diameter of the dust collecting fan 9 . The outer diameter of the dust collecting fan 9 is larger than the outer diameter of the motor housing. Both the fan guide 10 and the fan cover 20 are, for example, resin molded bodies.

The fan guide 10 is fixed to the front surface of the motor 6 by screw fastening or the like. The fan cover 20 is fixed and integrated with the fan guide 10 through claw engagement or the like. The fan guide 10 is located behind the dust collecting fan 9 . The fan guide 10 has a vent (not shown) through which the air flow generated by the dust collecting fan 9 passes. The fan cover 20 has a cylindrical shape centered on the rotation axis 6a. The rear end of the fan cover 20 is open. The front end of the fan cover 20 is not open except for the air suction port (fan cover air suction port) 21 . That is, the air suction port 21 is provided on the front surface of the fan cover 20 . The air intake port 21 is a circular through hole penetrating in the extending direction of the rotation shaft 6a with the central axis as the center. The air suction port 21 communicates with the space in the swirl chamber 3c.

The sealing member 30 seals (airtightly seals) the space between the main body case 2 and the fan cover 20 . Specifically, the sealing member 30 comes into contact with the inside of the air suction port 2d in the main body case 2 and the outside of the air suction port 21 in the fan cover 20, so that air is passed between the air suction port 2d and the air suction port 21. The main body case 2 and the fan cover 20 cannot be sealed from the inside or outside. The sealing component 30 also has an anti-vibration function. The sealing member 30 is an elastic body such as rubber. The sealing member 30 is formed in an annular shape with the central axis as the center. The air suction port 2d communicates with the air suction port 21 using the hole provided in the center of the sealing member 30 as a communication passage. The sealing member 30 is arranged around the air intake port 21 . The outer diameter of the sealing member 30 is smaller than the outer diameter of the fan cover 20 . The outer diameter of the sealing member 30 is larger than the outer diameter of the elastic body 7 .

The filter member 40 has a breathable filter 41; a first holder 50 as a first member; and a second holder 60 as a second member. The filter 41 is, for example, cloth. The filter 41 is formed in a bag shape with an open rear end. The filter 41 communicates with the air suction port 2d of the main body case 2 and the air suction port 21 of the fan cover 20 via its own opening. The first holder 50 and the second holder 60 are made of a harder material than the filter 41 . Both the first holder 50 and the second holder 60 are, for example, resin molded bodies. The first holder 50 and the second holder 60 are detachably assembled to each other and constitute a holder that holds the filter 41 . The filter 41 is clamped between the first holder 50 and the second holder 60 in a state in which the first holder 50 is assembled to the second holder 60 , thereby being relative to the first holder 50 and the second holder 60 . Piece 60 is fixed.

The first holder 50 has a cylindrical base portion 51 and a columnar portion 54 . The cylindrical base 51 has a cylindrical shape centered on the central axis. A notch 52 is provided at the rear end of the cylindrical base 51 . The notch 52 is an engaging portion that engages with the locking convex portion 64 of the second holder 60 . A plurality of notch portions 52 are provided along the circumferential direction (hereinafter, also simply referred to as “circumferential direction”) centered on the central axis. Specifically, four notches 52 are provided at intervals of 90 degrees in the circumferential direction. The rear end portion of the cylindrical base 51 is provided with a convex portion (convex strip portion) 53 on the entire circumference except the notch 52 . The convex portion 53 protrudes from the cylindrical base portion 51 in the radial direction (hereinafter also simply referred to as the “radial direction”) centered on the central axis. The columnar portion 54 extends forward from the front end of the cylindrical base portion 51 . The columnar portion 54 is a shape holding portion that holds the filter 41 in a cylindrical shape centered on the rotation axis.

The second holder 60 has a partition wall portion 61, a first cylindrical portion 63, and a second cylindrical portion 66. The partition wall portion 61 has a substantially disk shape with the central axis as the center and perpendicular to the central axis. The partition wall portion 61 constitutes the rear wall portion of the swirl chamber 3c outside the filter 41. The partition wall portion 61 has an opening in its center. A pair of handle portions 62 are provided on the front surface of the partition wall portion 61 . The handle portion 62 is a protruding portion protruding forward from the partition wall portion 61 . The handle portion 62 is a portion held by the operator when attaching or detaching the filter member 40 to the housing 2 .

The first cylindrical portion 63 protrudes rearward from the central opening edge of the partition wall portion 61 . The first cylindrical portion 63 has a cylindrical shape centered on the central axis. A locking convex portion 64 is provided on the inner peripheral surface of the first cylindrical portion 63 . As shown in FIG. 2 and others, the locking convex portion 64 is engaged with the notch portion 52 of the first holder 50 . The engagement between the locking protrusion 64 and the notch 52 prevents the first holder 50 from falling rearward from the second holder 60 . A plurality of locking protrusions 64 are provided in the circumferential direction. Specifically, four locking convex portions 64 are provided at intervals of 90 degrees in the circumferential direction. Notches 69 are provided on both sides of the locking convex portion 64 in the circumferential direction. The cutout 69 is a portion cut from the rear end of the first cylindrical portion 63 . The cutout 69 makes it easier for the locking convex portion 64 to tilt radially outward. The recessed portion 65 is provided on the inner peripheral surface of the rear end portion of the first cylindrical portion 63 over the entire circumference. As shown in FIG. 4 , the recessed portion 65 is engaged with the convex portion 53 of the first holder 50 . The engagement between the recessed portion 65 and the convex portion 53 prevents the first holder 50 from falling forward from the second holder 60 .

The second cylindrical portion 66 protrudes rearward from the partition wall portion 61 on the radial outer side of the first cylindrical portion 63 . The second cylindrical portion 66 has a cylindrical shape centered on the central axis. Engagement portions 67 are respectively provided at the upper and lower portions of the rear end portion of the second cylindrical portion 66 . The engaging portion 67 is a portion protruding radially outward from the second cylindrical portion 66 . A protruding portion 67a is provided at the center portion of the engaging portion 67 in the circumferential direction. The protruding portion 67a protrudes radially outward from the engaging portion 67 . As shown in FIG. 2 , the engaging portion 67 is located on the rear side of the wall portion 2k of the main body case 2 . The engaging portion 67 is pressed from the front by the wall portion 2k, thereby preventing the second holder 60 from falling forward from the main body case 2. As shown in FIG. 5 , the protruding portion 67 a is fitted into the recessed portion 2 j provided in the main body case 2 . The second holder 60 can be prevented from rotating relative to the main body case 2 by the fitting of the protruding portion 67a and the recessed portion 2j. The engagement portion 67 and the main body case 2 can be engaged and released with the second holder 60 assembled in the first holder 50 . That is, the second holder 60 is detachable from the main body case 2 in a state of being assembled to the first holder 50 . A seal 68 as a sealing portion is provided on the rear surface of the partition wall portion 61 between the first cylindrical portion 63 and the second cylindrical portion 66 in the radial direction. The seal 68 is an annular elastic body. The seal 68 is pressed against the cylindrical portion 2 h of the main body case 2 over the entire circumference, and seals the space between the second holder 60 and the main body case 2 airtightly.

The assembly procedure of the filter component 40 will be described. First, the columnar portion 54 of the first holder 50 is inserted into the opening of the filter 41 . When inserted deeply, the inner surface of the opening of the filter 41 comes close to the outer peripheral surface of the cylindrical base 51 of the first holder 50 . Next, the columnar portion 54 and the filter 41 are inserted into the central opening of the second holder 60 . At this time, the circumferential positions of the notch 52 of the first holder 50 and the locking convex portion 64 of the second holder 60 are aligned with each other and inserted. Then, the locking convex portion 64 is bent radially outward, passes over the cylindrical base portion 51 , and is fitted into the notch portion 52 (engaged with the notch portion 52 ) as shown in FIG. 3 . At this time, as shown in FIG. 4 , the convex portion 53 of the first holder 50 and the concave portion 65 of the second holder 60 are engaged with each other. The rear end portion of the filter 41 is sandwiched between the outer peripheral surface of the cylindrical base portion 51 of the first holder 50 and the inner peripheral surface of the first cylindrical portion 63 of the second holder 60 . Assemble the filter component 40 through the above steps.

The procedure for attaching the filter component 40 to the main body case 2 is as follows. In a state where the second holder 60 is rotated 45 degrees clockwise about the central axis with respect to the rotational position in FIG. 5 , the filter member 40 is assembled to the main body case 2 from the front. Thereafter, the filter member 40 is rotated 45 degrees counterclockwise about the central axis. Then, the engaging portion 67 of the second holder 60 wraps around the back of the wall portion 2k of the main body case 2, and the protruding portion 67a is embedded in the recessed portion 2j of the main body case 2. In order to detach the filter component 40 from the main body case 2, the installation procedure only needs to be reversed. That is, the filter member 40 only needs to be rotated 45 degrees clockwise about the central axis and separated forward from the main body case 2 .

To disassemble the filter component 40, simply reverse the assembly steps. That is, first, the first holder 50 is pulled out rearward from the second holder 60 . At this time, by applying a rearward force of more than a certain level to the first holder 50 , the engagement between the locking convex portion 64 and the notch portion 52 can be released. When the first holder 50 is pulled out from the second holder 60 , the filter 41 is detached forward from the first holder 50 .

The operation of the cleaner 1 will be described. When the operator operates the switch on the operation panel 5 to drive the motor 6 , the dust collecting fan 9 is rotated by the driving force of the motor 6 . The airflow generated by the dust collecting fan 9 is taken into the swirl chamber 3c from the suction duct part 3a. The airflow becomes a swirling flow in the swirling chamber 3c, passes through the filter member 40, and enters the fan cover 20 from the air suction ports 2d and 21. The airflow is sucked into the inside of the dust collecting fan 9 and discharged to the outside. It is guided by the fan cover 20 and discharged rearward from a vent (not shown) of the fan guide 10 . The airflow is finally discharged to the outside of the main body case 2 from the exhaust port 2e. The dust that enters together with the airflow from the suction port 3a is centrifugally separated in the swirl chamber 3c, and is accumulated inside the swirl chamber 3c and outside the filter member 40. The dust that has not been centrifugally separated is collected by the filter 41 of the filter member 40 and accumulated inside the swirl chamber 3c and outside the filter member 40.

According to this embodiment, the following effects can be achieved.

(1) Since the filter 41 can be separated from the first holder 50 and the second holder 60 , the filter 41 is easily cleaned. In particular, it becomes easy to wash the filter 41 with water, and it is easy to keep the filter 41 clean. In addition, since the first holder 50 and the second holder 60 do not need to be replaced together when the filter 41 is replaced, waste can be reduced.

(2) When manufacturing the filter member 40, it is not necessary to fix the filter 41 by sewing it to a holder or the like. Therefore, the manufacturing of the filter component 40 becomes easy.

(3) The filter member 40 and the main body case 2 are engaged behind the partition wall portion 61 , that is, outside the swirl chamber 3 c. That is, the engaging portion 67 of the second holder 60 and the structure of the main body case 2 engaged therewith are provided outside the swirl chamber 3c. Therefore, the influence of the engagement structure of the filter member 40 and the main body case 2 on the swirling flow in the swirling chamber 3c can be suppressed, and the efficiency of centrifugal separation of dust can be improved.

(Embodiment 2) Embodiment 2 of the present invention will be described with reference to FIGS. 10 to 14 . This embodiment relates to a cleaner 1A. Cleaner 1A is a cordless and portable non-cyclonic electric vacuum cleaner. The following description will focus on differences from Embodiment 1. An air suction port (dust box suction port) 3d is provided at the front end of the dust box 3. An extension pipe or a flexible hose (not shown) can be installed on the suction port 3d. A filter member 40A is detachably provided inside the dust box 3 .

The first holder 50 of the filter member 40A has a through hole 52A in the cylindrical base 51 . The through hole 52A is an engaging portion that engages with the locking convex portion 64 of the second holder 60 . A plurality of through holes 52A are provided in the circumferential direction. Specifically, four through holes 52A are provided at intervals of 90 degrees in the circumferential direction. The through-hole 52A replaces the notch part 52 of Embodiment 1. Engagement portions 57 are respectively provided at the upper and lower portions of the rear end portion of the cylindrical base portion 51 . The engaging portion 57 is a portion protruding radially outward from the cylindrical base 51 . A protruding portion 57a is provided at the center portion of the engaging portion 57 in the circumferential direction. The protruding portion 57a protrudes radially outward from the engaging portion 57 . The engaging portion 57 and the protruding portion 57a replace the engaging portion 67 and the protruding portion 67a of the first embodiment. That is, in this embodiment, the engagement structure with the main body case 2 is provided in the first holder 50 . A seal 58 as a sealing portion is provided at the rear end of the cylindrical base 51 . The seal 58 is an annular elastic body. The sealing member 58 is pressed against the front surface of the main body case 2 over the entire circumference, and seals the gap between the first holder 50 and the main body case 2 airtightly. This embodiment can also achieve the same effects (1) and (2) as those of Embodiment 1.

The present invention has been described above using the embodiment as an example. However, those skilled in the art will be able to make various modifications in each structural element or each process of the embodiment within the scope described in the claims. For example, the cleaner of the present invention may be of a corded type that operates with power supplied from an external AC power source. The motor can also be a brushless motor.

Symbol Description

1. 1A cleaner (electric vacuum cleaner); 2 main body shell; 2a receiving part; 2b handle part; 2c battery pack installation part; 2d suction port (casing suction port); 2e exhaust port; 2f left shell ; 2g right housing; 2h cylindrical part; 2i flange part; 2j concave part; 2k wall part; 3 dust box; 3a suction pipe part; 3b valve part; 3c swirl chamber; 3d suction port (dust box suction port); 4 battery pack; 5 operation panel (switch part); 6 motor; 6a rotating shaft (drive shaft); 7 elastomer; 8 lighting part; 9 dust collection fan; 10 fan guide; 20 fan cover; 21 suction port (fan cover suction port); 30 sealing part; 40, 40A filter parts; 41 filter; 50 first holder (first component); 51 cylindrical base; 52 notch part (engagement part ); 52A through hole (engaging part); 53 convex part (convex part); 54 columnar part; 57 engaging part; 57a protruding part; 58 seal (sealing part); 60 second holder (second component) ); 61 partition wall part; 62 handle part; 63 first cylindrical part; 64 locking convex part; 65 recessed part; 66 second cylindrical part; 67 engaging part; 67a protruding part; 68 seal (seal part ); 69 incision.

Claims (11)

1. A cleaner, characterized by comprising:

a motor having a drive shaft;

a fan rotated by a driving force of the driving shaft;

a main body housing that houses the motor and the fan therein;

an air inlet provided in the main body casing and allowing an air flow generated by the fan to flow into the main body casing; and

a filter unit detachably attached to the main body case so as to cover the air inlet, for trapping dust so as not to flow into the main body case,

the filter unit has:

a filter having air permeability; and

a holder made of a material harder than the filter and including a first member and a second member detachably assembled to each other,

in a state where the first member is assembled to the second member, the filter is held between the first member and the second member, thereby being fixed with respect to the holder,

the filter unit is detachably attached to the main body case by rotating with respect to the main body case around a rotation axis,

the second member is assembled to the first member by being moved relative to the first member in the rotation axis direction.

2. A cleaner, characterized by comprising:

a motor having a drive shaft;

a fan rotated by a driving force of the driving shaft;

a main body housing that houses the motor and the fan therein;

an air inlet provided in the main body casing and allowing an air flow generated by the fan to flow into the main body casing; and

a filter unit detachably attached to the main body case so as to cover the air inlet, for trapping dust so as not to flow into the main body case,

the filter unit has:

a filter having air permeability; and

a holder made of a material harder than the filter and including a first member and a second member detachably assembled to each other,

in a state where the first member is assembled to the second member, the filter is held between the first member and the second member, thereby being fixed with respect to the holder,

the second member has an engagement portion engaged with the main body case, and the filter portion is detachably attached to the main body case by the engagement portion being rotated with respect to the main body case around a rotation axis,

the first member has a columnar portion and,

the filter is held in a cylindrical shape by the columnar portion.

3. The cleaner of claim 2, wherein the cleaning device comprises a cleaning blade,

the second member is detachable from the main body case in a state of being assembled to the first member.

4. The cleaner of claim 2, wherein the cleaning device comprises a cleaning blade,

the second member has a sealing portion that seals between itself and the main body case.

5. The cleaner of claim 3 wherein the cleaning fluid is,

the second member has a sealing portion that seals between itself and the main body case.

6. The cleaner of claim 2, wherein the cleaning device comprises a cleaning blade,

the second member has a knob portion protruding in the rotation axis direction.

7. The cleaner of claim 2, wherein the cleaning device comprises a cleaning blade,

the filter is formed in a bag shape having an opening, is fixed to the first member in such a manner that the first member enters the inside of the filter,

the filter unit is attached to the main body case so that the filter interior communicates with the air inlet through the opening.

8. The cleaner of claim 7, wherein the cleaning device comprises a cleaning blade,

has a swirl chamber for generating an air flow swirled around a swirl axis,

the swirl chamber communicates with the air inlet and accommodates the filter device,

the filter is held by the first member in a cylindrical shape centered on the swivel axis.

9. The cleaner of claim 8, wherein the cleaning fluid is,

the second member has an engagement portion disposed outside the swirl chamber and engaged with the main body case.

10. A cleaner as claimed in any one of claims 1 to 9,

the second member is formed in a ring shape and is disposed so as to surround the air inlet when viewed in the opening direction of the air inlet,

the first member is attached to the inner peripheral side of the second member,

the filter is sandwiched between the inner peripheral surface of the second member and the first member.

11. The cleaner of claim 10, wherein the cleaning fluid is,

the filter is formed in a bag shape having an opening,

the suction port is located rearward of an inner peripheral portion of the second member,

the first member is attached to the second member by being introduced from the rear side toward the front side into the inner peripheral side of the second member in a state where the filter is attached with the opening facing the rear side, and the filter is sandwiched between the first member and the second member.