JP2023120866A - Cyclone dust collection unit and cleaner - Google Patents

Abstract

To suppress noise to be generated from a cleaner.SOLUTION: A cyclone dust collection unit includes: rotation members for rotating air; a dust cup to which the air passed through the rotation members flows in; and a filter unit through which the air flowing out from the dust cup passes. The filter unit includes: a pre-filter; a sound absorption member where the air passed through the pre-filter flows; and a post-filter where the air passed through the sound absorption member flows.SELECTED DRAWING: Figure 20

Description

TECHNICAL FIELD The technology disclosed herein relates to cyclone dust collection units and cleaners.

Cyclone dust collectors such as those disclosed in Patent Document 1 are known in the technical field related to cleaners.

Japanese Patent Application Laid-Open No. 2003-250734

The noise generated by the cleaner may be uncomfortable for the user of the cleaner and those around the cleaner.

An object of the technique disclosed in this specification is to suppress the noise generated from the cleaner.

This specification discloses a cyclone dust collection unit. The cyclone dust collection unit may include a swirling member for swirling air, a dust cup into which the air passing through the swirling member flows, and a filter unit through which the air flowing out from the dust cup passes. The filter unit may have a pre-filter, a sound absorbing member through which air that has passed through the pre-filter flows, and a post-filter through which air that has passed through the sound absorbing member flows.

According to the technique disclosed in this specification, noise generated from the cleaner is suppressed.

FIG. 1 is a front perspective view showing a cleaner and an extension pipe according to the embodiment. FIG. 2 is a perspective view from the front showing the cleaner according to the embodiment. FIG. 3 is a side view showing the cleaner according to the embodiment; FIG. 4 is a cross-sectional view showing the cleaner according to the embodiment. FIG. 5 is an exploded perspective view from the front showing the cleaner according to the embodiment. 6 is a front view of the body assembly according to the embodiment; FIG. 7 is a front perspective view of the filter assembly according to the embodiment; FIG. FIG. 8 is a side view of the filter assembly according to the embodiment; FIG. 9 is a rear perspective view of the filter assembly according to the embodiment. FIG. 10 is a rear view of the dust collection assembly according to the embodiment; FIG. 11 is a rear perspective view of an embodiment dust collection assembly; FIG. 12 is an exploded rear perspective view of the dust collection assembly according to the embodiment; FIG. 13 is a cross-sectional view showing a connection structure between a main body assembly, a filter assembly, and a dust collection assembly according to the embodiment; FIG. 14 is an exploded front perspective view of a portion of the dust collection assembly according to the embodiment; FIG. 15 is an exploded rear perspective view of a portion of the dust collection assembly according to the embodiment; FIG. 16 is a perspective view from the front showing the filter unit according to the embodiment. FIG. 17 is a rear perspective view of the filter unit according to the embodiment. FIG. 18 is an exploded perspective view from the front showing the filter unit according to the embodiment. FIG. 19 is an exploded perspective view from the rear showing the filter unit according to the embodiment. FIG. 20 is a cross-sectional view showing the filter unit according to the embodiment. FIG. 21 is an exploded perspective view from the front showing the pre-filter according to the embodiment. FIG. 22 is a perspective view from the front showing the cleaner according to the embodiment. FIG. 23 is a perspective view from the front showing the lock mechanism according to the embodiment. FIG. 24 is a front perspective view showing an inlet pipe and an extension pipe according to the embodiment; FIG. 25 is a top view of the lock mechanism according to the embodiment. FIG. 26 is a side view showing the locking mechanism according to the embodiment; FIG. 27 is a cross-sectional view showing the locking mechanism according to the embodiment; FIG. 28 is an exploded front perspective view of a portion of an embodiment dust collection assembly; FIG. 29 is an exploded perspective view from the front showing the inlet pipe according to the embodiment. FIG. 30 is a cross-sectional view showing an inlet pipe according to the embodiment;

In one or more embodiments, the cyclone dust collection unit includes a swirling member for swirling air, a dust cup into which the air passing through the swirling member flows, a filter unit through which the air flowing out from the dust cup passes, may be provided. The filter unit may have a pre-filter, a sound absorbing member through which air that has passed through the pre-filter flows, and a post-filter through which air that has passed through the sound absorbing member flows.

In the above configuration, the air flowing out of the dust cup passes through the sound absorbing member before passing through the post-filter. Air swirling inside the dust cup does not hit the post filter directly. Therefore, noise generated from the post-filter is suppressed. Also, the air flowing out of the dust cup passes through the pre-filter before passing through the sound absorbing member. Therefore, foreign matter inside the dust cup is prevented from adhering to the sound absorbing member.

In one or more embodiments, each of the pre-filter, sound absorbing member, and post-filter may have holes through which air passes. The pore size of the pre-filter may be smaller than the pore size of the sound absorbing member. The pore size of the sound absorbing member may be smaller than the pore size of the post filter.

In the above configuration, the air flowing out of the dust cup passes through the holes of the sound absorbing member, which are smaller than the holes of the post-filter, before passing through the holes of the post-filter. Since the size of the holes of the sound absorbing member is smaller than the size of the holes of the post-filter, noise generated from the post-filter is suppressed. Also, the air flowing out of the dust cup passes through the holes of the pre-filter, which are smaller than the holes of the sound absorbing member, before passing through the holes of the sound absorbing member. Since the size of the holes of the pre-filter is smaller than the size of the holes of the sound absorbing member, foreign matter inside the dust cup is suppressed from adhering to the sound absorbing member.

In one or more embodiments, the post-filter may have a filter barrel. The sound absorbing member may be arranged around the filter tube. At least part of the pre-filter may be arranged around the sound absorbing member.

In the above configuration, the air inside the dust cup can pass through the pre-filter, through the sound absorbing member, and then through the post-filter. Since the filter cylindrical portion of the post filter is covered with the sound absorbing member, noise generated from the post filter is suppressed. Since the sound absorbing member is covered with the pre-filter, foreign matter inside the dust cup is prevented from adhering to the sound absorbing member.

In one or more embodiments, the outer surface of the filter tube and the inner surface of the sound absorbing member may contact. The outer surface of the sound absorbing member and the inner surface of the pre-filter may be in contact.

With the above configuration, an increase in size of the filter unit is suppressed.

In one or more embodiments, the sound absorbing member may be sandwiched between a pre-filter and a post-filter.

In the above configuration, the sound absorbing member is fixed to each of the pre-filter and the post-filter by sandwiching the sound absorbing member between the pre-filter and the post-filter.

In one or more embodiments, the post filter may have a filter hook provided at one axial end of the filter tube. The pre-filter may have a filter connecting portion which is provided at one end in the axial direction of the pre-filter and on which the filter hook portion is hooked.

In the above configuration, the pre-filter and the post-filter are fixed by hooking the filter hook portion of the post-filter onto the filter connecting portion of the pre-filter.

In one or more embodiments, the pre-filter, sound absorbing member, and post-filter may be separable.

In the above configuration, the pre-filter, the sound absorbing member, and the post-filter are separated by removing the filter hook portion from the filter connecting portion. By separating the pre-filter, the sound absorbing member, and the post-filter, the user of the cleaner can smoothly maintain the pre-filter, the sound absorbing member, and the post-filter.

In one or more embodiments, the pre-filter may include a cylindrical mesh member.

With the above configuration, foreign matter inside the dust cup is prevented from sticking to the pre-filter. When foreign matter adheres to the surface of the pre-filter, the user of the cleaner can easily remove the foreign matter adhering to the surface of the pre-filter.

In one or more embodiments, the mesh member may be made of nylon resin.

With the above configuration, foreign matter inside the dust cup is prevented from sticking to the pre-filter.

In one or more embodiments, the pre-filter may have a filter frame that supports the mesh member.

In the above configuration, since the mesh member is supported by the filter frame, deformation of the mesh member is suppressed.

In one or more embodiments, the mesh member and filter frame may be integral.

With the above configuration, changes in relative position between the mesh member and the filter frame are suppressed.

In one or more embodiments, the filter frame includes a first fixing portion fixed to one axial end of the mesh member, a second fixing portion fixed to the other axial end of the mesh member, and a second fixing portion fixed to the other axial end of the mesh member. A frame connecting portion connecting the first fixing portion and the second fixing portion may be provided.

With the above configuration, deformation of the mesh member is suppressed. Also, the air inside the dust cup can pass through the mesh member between the first fixing part, the second fixing part and the frame connecting part.

In one or more embodiments, the sound absorbing member may comprise a cylindrical sponge member.

In the above configuration, since the sound absorbing member is a sponge member, noise generated from the post filter is effectively suppressed. Also, the user of the cleaner can smoothly attach the sound absorbing member to the post filter.

In one or more embodiments, the sponge member may be made of urethane resin.

With the above configuration, noise generated from the post-filter is effectively suppressed. Also, the user of the cleaner can smoothly attach the sound absorbing member to the post filter.

In one or more embodiments, the post-filter may have a filter tube and a filter cover covering an opening at one axial end of the filter tube. A hole through which air passes may be provided in the filter cylinder.

In the above configuration, the air inside the dust cup can pass through the pre-filter, the sound absorbing member, and then the filter cylinder of the post-filter. Since the filter cylindrical portion of the post filter is covered with the sound absorbing member, noise generated from the post filter is suppressed. Since the sound absorbing member is covered with the pre-filter, foreign matter inside the dust cup is prevented from adhering to the sound absorbing member.

In one or more embodiments, the air that has passed through the holes of the filter tube may flow out from the outlet at the other axial end of the filter tube.

In the above configuration, the air that has flowed into the dust cup passes through the filter unit and then flows out from the outlet at the other end in the axial direction of the filter cylinder.

In one or more embodiments, the post filter may be made of ABS plastic.

The above configuration ensures the strength of the filter unit.

Hereinafter, embodiments according to the present disclosure will be described with reference to the drawings, but the present disclosure is not limited to the embodiments. The constituent elements of the embodiments described below can be combined as appropriate. Also, some components may not be used.

In the embodiments, the terms "front", "rear", "left", "right", "upper" and "lower" are used to describe the positional relationship of each part. These terms refer to relative positions or orientations with respect to the center of the cleaner 1 .

[Overview of Cleaner]
FIG. 1 is a front perspective view showing a cleaner 1 and an extension pipe 100 according to the embodiment. FIG. 2 is a front perspective view showing the cleaner 1 according to the embodiment. FIG. 3 is a side view showing the cleaner 1 according to the embodiment. FIG. 4 is a cross-sectional view showing the cleaner 1 according to the embodiment. FIG. 5 is an exploded perspective view from the front showing the cleaner 1 according to the embodiment.

In embodiments, the cleaner 1 is a cyclone cleaner that uses centrifugal force to separate contaminants from air. Cleaner 1 comprises a body assembly 2 , a filter assembly 3 and a dust collection assembly 4 . A proximal end of the extension pipe 100 is connected to the dust collection assembly 4 . A suction nozzle 101 is connected to the tip of the extension pipe 100 . The suction nozzle 101 has a suction port.

[Body assembly]
FIG. 6 is a front view of the body assembly 2 according to the embodiment. As shown in FIGS. 1, 2, 3, 4, 5, and 6, the body assembly 2 includes a body housing 5, a battery mounting portion 6, a suction unit 7, a controller 8, and an operation panel. 9 and a light 10 .

The body housing 5 is made of synthetic resin. The body housing 5 is composed of a pair of half-split housings. The body housing 5 includes a left housing 5L and a right housing 5R. The right housing 5R is arranged to the right of the left housing 5L. The left housing 5L and the right housing 5R are fixed by a plurality of screws 5S.

The body housing 5 has a body portion 11 , a grip portion 12 and a battery holding portion 13 .

The body portion 11 accommodates the suction unit 7 . The suction unit 7 is arranged in the internal space of the body portion 11 . The body portion 11 has a side plate portion 11A, a front plate portion 11B, an inner cylinder portion 11C, and an outer cylinder portion 11D.

The side plate portion 11A is arranged so as to surround the suction unit 7 . The front plate portion 11B is arranged in front of the side plate portion 11A. Each of the inner cylinder portion 11C and the outer cylinder portion 11D is provided on the front plate portion 11B. The inner tubular portion 11C protrudes forward from the front surface of the front plate portion 11B. The outer cylindrical portion 11D protrudes forward from the front surface of the front plate portion 11B. The outer tubular portion 11D is arranged around the inner tubular portion 11C.

The body portion 11 has a suction port 14 and an exhaust port 15 . A suction port 14 is provided in the front portion of the body assembly 2 . In the embodiment, the suction port 14 is provided in the central portion of the front plate portion 11B. The inner cylindrical portion 11</b>C is arranged around the suction port 14 . The exhaust port 15 is provided on each of the left and right portions of the side plate portion 11A.

In the embodiment, a sound absorbing member 16 is arranged in the internal space of the body housing 5 . The sound absorbing member 16 is arranged so as to face the exhaust port 15 in the internal space of the body portion 11 . The sound absorbing member 16 is a porous member. The sound absorbing member 16 absorbs sound propagating through the air and suppresses the generation of noise.

A groove 11E is provided on the outer surface of the outer cylindrical portion 11D. Two grooves 11E are provided on the outer surface of the outer cylindrical portion 11D. Groove 11E is formed to extend in the circumferential direction of rotation axis AX. Each of the two grooves 11E is arcuate in a plane perpendicular to the rotation axis AX. The groove 11E is spirally provided.

The grip portion 12 is gripped by the user of the cleaner 1 . The grip portion 12 is provided so as to extend rearward from the upper portion of the body portion 11 .

The battery holding portion 13 holds the battery pack 17 via the battery mounting portion 6 . The battery holding portion 13 is connected to the rear portion of the body portion 11 and the lower end portion of the rear portion of the grip portion 12 .

The battery mounting portion 6 is provided below the battery holding portion 13 . The battery pack 17 is attached to the battery attachment portion 6 . The battery pack 17 is attachable to and detachable from the battery mounting portion 6 .

The battery pack 17 functions as a power source for the cleaner 1 . The battery pack 17 supplies electric power to the cleaner 1 while being attached to the battery attachment portion 6 . The battery pack 17 is a general-purpose battery that can be used as a power source for various electric devices. The battery pack 17 can be used as a power source for power tools. The battery pack 17 can be used as a power source for electrical equipment other than power tools. The battery pack 17 can be used as a power source for a cleaner other than the cleaner 1 according to the embodiment. Battery pack 17 includes a lithium-ion battery. The battery pack 17 is a rechargeable battery that can be charged. The battery mounting portion 6 has a structure equivalent to that of a battery mounting portion of an electric power tool.

A user of the cleaner 1 can perform the operation of attaching the battery pack 17 to the battery attachment portion 6 and the operation of removing the battery pack 17 from the battery attachment portion 6 . The battery mounting portion 6 has a guide member that guides the battery pack 17 and body terminals that are connected to battery terminals provided on the battery pack 17 . A user can attach the battery pack 17 to the battery attachment portion 6 by inserting the battery pack 17 into the battery attachment portion 6 from behind. The battery pack 17 is inserted into the battery mounting portion 6 while being guided by the guide member. By attaching the battery pack 17 to the battery attachment portion 6 , the battery terminals of the battery pack 17 and the body terminals of the battery attachment portion 6 are electrically connected. A user of the cleaner 1 can remove the battery pack 17 from the battery mounting portion 6 by moving the battery pack 17 backward.

The suction unit 7 causes the suction port 14 to generate a suction force. The suction unit 7 is housed in the body portion 11 . The suction unit 7 has a fan 7A, a motor 7B, and a motor case 7C that houses the fan 7A and the motor 7B. The fan 7A is rotatable around the rotation axis AX. The rotation axis AX extends in the front-rear direction. The motor 7B generates power to rotate the fan 7A. Motor 7B is a DC brushless motor. The motor 7B has a cylindrical stator, a rotor arranged inside the stator, and a rotor shaft extending forward from the rotor. A rotor shaft is fixed to the rotor. Fan 7A is fixed to the rotor shaft. The rotational axis AX of the rotor of the motor 7B and the rotational axis AX of the fan 7A coincide. As the rotor of the motor 7B rotates around the rotation axis AX, the fan 7A rotates around the rotation axis AX.

An opening 7D is provided in the front portion of the motor case 7C. Motor case 7C has a plurality of ribs 7E arranged in opening 7D. The ribs 7E are arranged to extend radially from the center of the opening 7D. A portion of the motor case 7C including the opening 7D is arranged in the suction port 14 of the front plate portion 11B. As the fan 7A rotates, a suction force is generated in the opening 7D. Generating a suction force at the suction port 14 includes generating a suction force at the opening 7D. Air sucked into the suction port 14 by the rotation of the fan 7A flows into the internal space of the motor case 7C through the opening 7D. The air that has flowed into the internal space of the motor case 7C flows out to the external space of the main body housing 5 through the exhaust port 15 after passing through the internal space of the motor case 7C.

The controller 8 controls at least the motor 7B. The controller 8 is housed in the body portion 11 . Controller 8 includes a circuit board on which a plurality of electronic components are mounted. Electronic components mounted on the circuit board include processors such as CPUs (Central Processing Units), non-volatile memories such as ROMs (Read Only Memory) or storage, volatile memories such as RAMs (Random Access Memory), and transistors. , and resistors.

The operation panel 9 is operated by the user of the cleaner 1 . The operation panel 9 is arranged on the grip portion 12 . A user of the cleaner 1 can operate the operation panel 9 while gripping the grip portion 12 . In the embodiment, the operation panel 9 has a drive mode switching button 9A for switching drive conditions of the motor 7B and a drive button 9B for driving the motor 7B. When the drive button 9B is operated while the motor 7B is stopped, the drive of the motor 7B is started. A suction force is generated in the suction port 14 by driving the motor 7B. When the drive mode switching button 9A is operated while the motor 7B is driving, the number of rotations of the motor 7B is adjusted, for example, in four stages. When the drive mode switching button 9A is operated once while the motor 7B is being driven, the number of rotations of the motor 7B is changed from the first number of rotations to the second number of rotations. , the number of revolutions of the motor 7B is changed from the second number of revolutions to the third number of revolutions, and when it is operated once more, the number of revolutions of the motor 7B is changed from the third number of revolutions to the fourth number of revolutions. , and when it is operated one more time, the rotation speed of the motor 7B returns to the first rotation speed. The suction force at the suction port 14 is changed by changing the rotation speed of the motor 7B. When the drive button 9B is operated while the motor 7B is being driven, the motor 7B is stopped. Further, the operation panel 9 has a plurality of light emitting portions 9C that emit light based on the number of revolutions of the motor 7B.

The light 10 is arranged in front of the grip portion 12 . A light 10 illuminates the front of the cleaner 1 . The light 10 includes a light emitting element such as a light emitting diode (LED).

[Filter assembly]
As shown in FIGS. 4 and 5 , at least part of the filter assembly 3 is positioned forward of the body assembly 2 . The filter assembly 3 is arranged to face the suction port 14 of the body assembly 2 .

FIG. 7 is a perspective view from the front showing the filter assembly 3 according to the embodiment. FIG. 8 is a side view showing the filter assembly 3 according to the embodiment. FIG. 9 is a rear perspective view showing the filter assembly 3 according to the embodiment.

As shown in FIGS. 4 , 5 , 7 , 8 and 9 , filter assembly 3 includes support frame 18 , filter 19 , filter fixing member 21 and retaining rib member 22 .

A support frame 18 supports the filter 19 . The support frame 18 has a first lattice portion 23 , a second lattice portion 24 , a front tubular portion 25 , a rear tubular portion 26 and a support rib portion 27 .

The first lattice portion 23 has a first ring portion 23A and a first rod portion 23B. The first ring portion 23A is arranged forward of the front tubular portion 25 . The 1st rod part 23B is provided so that the 1st ring part 23A and the front side cylinder part 25 may be connected. A plurality of first rod portions 23B are arranged at intervals in the circumferential direction of the first ring portion 23A.

The second lattice portion 24 has a second ring portion 24A, a third ring portion 24B, a second rod portion 24C, and a third rod portion 24D. The second ring portion 24A is arranged forward of the front tubular portion 25 . The third ring portion 24B is arranged radially inside the front tubular portion 25 . The third ring portion 24B is arranged behind the second ring portion 24A. The second rod portion 24C is provided to connect the second ring portion 24A and the rear tubular portion 26 . A plurality of second rod portions 24C are arranged at intervals in the circumferential direction of the second ring portion 24A. The third rod portion 24D is provided to connect the second ring portion 24A and the third ring portion 24B. A plurality of third rod portions 24D are arranged at intervals in the circumferential direction of the second ring portion 24A.

The front tubular portion 25 is cylindrical. The front tubular portion 25 is arranged behind the first ring portion 23A and the second ring portion 24A.

The rear tubular portion 26 is cylindrical. The rear tubular portion 26 is arranged rearward of the front tubular portion 25 . The central axis of the front tubular portion 25 and the central axis of the rear tubular portion 26 coincide. The outer diameter of the front tubular portion 25 is larger than the outer diameter of the rear tubular portion 26 . The inner diameter of the front tubular portion 25 is larger than the inner diameter of the rear tubular portion 26 .

The support rib portion 27 is arranged on the outer surface of the front tubular portion 25 . The support rib portion 27 protrudes radially outward of the front tubular portion 25 from the outer surface of the front tubular portion 25 . The support rib portion 27 has an annular shape. The support rib portion 27 is a flange portion provided on the outer surface of the front tubular portion 25 .

Filter 19 is supported by support frame 18 . The filter 19 is arranged forward of the suction port 14 of the body assembly 2 . Filter 19 is breathable. Filter 19 collects foreign matter from the air passing through filter 19 . In embodiments, filter 19 is made of fabric.

The filter 19 is bag-shaped. The filter 19 is arranged so as to cover the first grating portion 23 . An opening is provided at the rear end of the filter 19 . A rear end portion of the filter 19 is fixed to, for example, the front tubular portion 25 . Air flows into the filter 19 from the front portion of the filter 19 . Foreign matter contained in the air is collected by the filter 19 . The air that has passed through the filter 19 flows out from the rear opening of the filter 19 and then flows into the suction port 14 .

The filter fixing member 21 is arranged around the front tubular portion 25 . The filter fixing member 21 is ring-shaped. The filter fixing member 21 is press-fitted into the front tubular portion 25 . The filter fixing member 21 is arranged so as to contact the outer surface of the front tubular portion 25 . Filter 19 is sutured to filter fixing member 21 .

A retaining rib member 22 is secured to at least a portion of the support frame 18 . In embodiments, the retaining rib member 22 is secured to the rearward end of the support frame 18 . In embodiments, the retaining rib member 22 is secured to the rear end of the rear tubular portion 26 . The retaining rib member 22 is annular. At least part of the holding rib member 22 protrudes radially outward from the outer surface of the rear tubular portion 26 .

The holding rib member 22 is an elastic body. In an embodiment, the retaining rib member 22 is made of ThermoPlastic Elastomer (TPE). The holding rib member 22 has a fixing portion 22A and a lip portion 22B. The fixed portion 22A is fixed to the rear end portion of the rear tubular portion 26 . The fixed portion 22A is ring-shaped. The lip portion 22B is connected to the fixed portion 22A. The lip portion 22B is ring-shaped. The lip portion 22B can be elastically deformed.

[Dust collection assembly]
As shown in FIGS. 1, 2, 3, 4, and 5, at least a portion of the dust collection assembly 4 is positioned forward of the body assembly 2. As shown in FIGS. The filter assembly 3 is housed in at least part of the dust collection assembly 4 .

FIG. 10 is a rear view of the dust collection assembly 4 according to the embodiment. FIG. 11 is a rear perspective view of the dust collection assembly 4 according to the embodiment. FIG. 12 is an exploded perspective view from the rear showing the dust collection assembly 4 according to the embodiment.

As shown in FIGS. 1, 2, 3, 4, 5, 10, 11 and 12, the dust collection assembly 4 includes a cyclone housing 30 and a cyclone dust collection unit 40. As shown in FIGS.

Cyclone housing 30 includes a front housing 31 and a rear housing 32 . At least part of the front housing 31 is arranged forward of the rear housing 32 . The front housing 31 and rear housing 32 are fixed by four screws 60 . The front housing 31 is provided with a threaded hole 61 to which the threaded portion of the screw 60 is coupled. An opening 62 is provided in the rear housing 32 in which the middle portion of the screw 60 is located.

The front housing 31 has a body portion 33 , an inlet pipe 34 and a dust cup connecting tubular portion 35 .

The rear housing 32 has an assembly tube portion 37 , an assembly plate portion 38 , a filter unit connection tube portion 39 , an engagement protrusion 28 and an assembly support portion 29 .

The cyclone dust collection unit 40 has a turning member 43 , a filter unit 50 and a dust cup 42 .

The body portion 33 is cylindrical. The body portion 33 is arranged at the rear portion of the front housing 31 . Body portion 33 is connected to rear housing 32 . The inlet pipe 34 protrudes forward from the front portion of the body portion 33 . The dust cup connecting tubular portion 35 is tubular. The dust cup connecting tubular portion 35 is arranged in parallel with the inlet pipe 34 . The dust cup connecting tube portion 35 protrudes forward from the front portion of the body portion 33 .

As shown in FIG. 1, the inlet pipe 34 is connected to the proximal end of the extension pipe 100. As shown in FIG. A suction nozzle 101 is connected to the tip of the extension pipe 100 . The suction nozzle 101 has a suction port.

A lock mechanism 36 is provided at the front end of the inlet pipe 34 . The lock mechanism 36 fixes the inlet pipe 34 and the extension pipe 100 . The extension pipe 100 is removed from the inlet pipe 34 by releasing the lock mechanism 36 . The extension pipe 100 is attachable to and detachable from the inlet pipe 34 .

The inlet pipe 34 has an inlet 34A and an outlet 34B. 34 A of inflow ports are provided in the front-end part of the inlet pipe 34. As shown in FIG. Outflow port 34B is provided at the rear end of inlet pipe 34 . A proximal end portion of the extension pipe 100 is inserted into the inlet 34A. The air sucked from the suction nozzle 101 flows through the extension pipe 100 and then flows into the inlet 34A. The air that has passed through the inlet pipe 34 flows out from the outlet 34B.

The dust cup connecting tubular portion 35 is connected to the dust cup 42 . A locking portion 44 is provided at the rear end portion of the dust cup 42 . A concave portion 35R (see FIG. 14 and the like) is provided in a portion of the front housing 31 . The lock portion 44 has a hook portion hooked on the recess 35R. The dust cup 42 and the dust cup connecting tube portion 35 are fixed by the locking portion 44 . The dust cup 42 is removed from the dust cup connecting tube portion 35 by releasing the fixing by the locking portion 44 . The dust cup 42 is attachable/detachable to/from the dust cup connecting cylindrical portion 35 of the front housing 31 .

A front end portion of the assembly tubular portion 37 is connected to the front housing 31 . The assembly plate portion 38 is connected to the front portion of the assembly tube portion 37 so as to cover the front opening of the assembly tube portion 37 . The filter assembly 3 is housed in the assembly tubular portion 37 . The filter assembly 3 is inserted inside the tubular assembly portion 37 through an opening provided at the rear end portion of the tubular assembly portion 37 .

The filter unit connecting tube portion 39 protrudes forward from a portion of the assembly plate portion 38 . The filter unit connecting tubular portion 39 is tubular. An opening is provided in a portion of the assembly plate portion 38 . A rear end portion of the filter unit connecting cylinder portion 39 is connected to an opening of the assembly plate portion 38 .

The engaging protrusion 28 is inserted into the groove 11E of the main body housing 5 . Two engaging protrusions 28 are provided at the rear end of the assembly tube portion 37 . The engaging convex portion 28 protrudes radially inward from the inner surface of the tubular assembly portion 37 . As mentioned above, two grooves 11E are also provided. One engaging protrusion 28 is inserted into one groove 11E. The other engaging protrusion 28 is inserted into the other groove 11E.

When the rear housing 32 and the body housing 5 are relatively rotated in one direction with the pair of engaging projections 28 of the rear housing 32 arranged in the grooves 11E of the body housing 5, the rear housing 32 and the body The housing 5 is fixed by so-called bayonet coupling. When the rear housing 32 and the body housing 5 are relatively rotated in the other direction, the connection between the rear housing 32 and the body housing 5 is released.

The assembly support portion 29 supports the support rib portion 27 of the filter assembly 3 from the front. The support rib portion 27 contacts an assembly support portion 29 provided on the dust collection assembly 4 . Three assembly support portions 29 are provided on the inner surface of the assembly cylinder portion 37 at intervals. The assembly support portion 29 is configured by a rib protruding radially inward from the inner surface of the assembly tubular portion 37 . The assembly supporting portion 29 is arranged in front of the supporting rib portion 27 while the pair of engaging projections 28 of the rear housing 32 are arranged in the grooves 11E of the main body housing 5 . The rear end portion of the assembly support portion 29 faces the front surface of the support rib portion 27 while the pair of engaging projections 28 of the rear housing 32 are arranged in the grooves 11E of the main body housing 5 .

The swirl member 43 swirls the air supplied from the inlet pipe 34 . The turning member 43 includes a first turning member 43A provided on the front housing 31 and a second turning member 43B connected to the rear end portion of the first turning member 43A. A swirl flow path 45 is formed inside the swirl member 43 .

The dust cup connecting tube portion 35 has an inlet 35A. The inlet 35A of the dust cup connecting tube portion 35 functions as an inlet of the cyclone dust collecting unit 40. As shown in FIG. The inflow port 35A is provided at the rear end portion of the dust cup connecting tubular portion 35. As shown in FIG. The outflow port 34B of the inlet pipe 34 and the inflow port 35A of the cyclone dust collection unit 40 are connected via a swirling flow path 45. As shown in FIG. The swirl flow path 45 is provided in part of the cyclone housing 30 . Air flowing out from the outlet 34B of the inlet pipe 34 flows through the swirl flow path 45 and then flows into the inlet 35A of the cyclone dust collecting unit 40 .

The swirl flow path 45 connects the outlet 34B of the inlet pipe 34 and the inlet 35A of the cyclone dust collection unit 40 . The swirl flow path 45 is defined by the swirl member 43 . The first turning member 43A is arranged inside the body portion 33 . The second turning member 43B has a plate shape and is connected to the rear end portion of the first turning member 43A. The second turning member 43B faces at least the outlet 34B of the inlet pipe 34 . By fixing the front housing 31 and the rear housing 32 with screws 60 , the rear end portion of the first turning member 43</b>A of the front housing 31 is covered with the assembly plate portion 38 of the rear housing 32 . In the embodiment, the swirl flow path 45 is defined by the first swirl member 43A, the second swirl member 43B and the assembly plate portion 38. As shown in FIG. The swirl channel 45 is the internal channel of the cyclone housing 30 .

[Connection structure]
FIG. 13 is a cross-sectional view showing a connection structure between the body assembly 2, the filter assembly 3, and the dust collection assembly 4 according to the embodiment.

The filter assembly 3 is attached to the body assembly 2 before the body assembly 2 and the dust collection assembly 4 are connected. After the filter assembly 3 is attached to the body assembly 2 , the body assembly 2 and the dust collection assembly 4 are connected via the filter assembly 3 . A filter assembly 3 is sandwiched between the body assembly 2 and the dust collection assembly 4 .

As shown in FIG. 13, a convex portion 11F is provided on the inner surface of the outer cylindrical portion 11D facing radially inward. The convex portion 11F protrudes radially inward from the inner surface of the outer cylindrical portion 11D. The protrusions 11F are provided at two locations, upper and lower portions, of the outer cylindrical portion 11D. A groove 11G is formed by the rear surface of the convex portion 11F, the front surface of the front plate portion 11B, and the inner surface of the outer cylindrical portion 11D. The grooves 11G are formed at two locations, upper and lower portions, of the outer cylindrical portion 11D.

When attaching the filter assembly 3 to the main body assembly 2, the holding rib member 22 fixed to the rear end portion of the rear tubular portion 26 is inserted between the inner tubular portion 11C and the outer tubular portion 11D.

A user of the cleaner 1 pushes the filter assembly 3 into the body assembly 2 from the front so that the retaining rib members 22 of the filter assembly 3 are positioned in the grooves 11G provided in the body assembly 2 . The holding rib member 22 is inserted into the groove 11G from the front.

The holding rib member 22 is an elastic body. The holding rib member 22 passes through the convex portion 11F while elastically deforming and enters the inside of the groove 11G. The body assembly 2 and the filter assembly 3 are connected by placing the retaining rib member 22 in the groove 11G.

After the body assembly 2 and the filter assembly 3 are connected, the user of the cleaner 1 assembles the rear housing 32 and the body housing 5 with the engaging projections 28 of the rear housing 32 arranged in the grooves 11E of the body housing 5 . and rotate in one direction relative to each other. Thereby, the body assembly 2 and the dust collection assembly 4 are connected via the filter assembly 3 .

As mentioned above, groove 11E is spiral. When the rear housing 32 and the body housing 5 are relatively rotated in one direction with the engaging protrusions 28 of the rear housing 32 arranged in the grooves 11E of the body housing 5, the dust collecting assembly 4 moves toward the body assembly 2. move backwards to approach the

The assembly support portion 29 is arranged at a position facing the front surface of the support rib portion 27 of the filter assembly 3 . Relative rotation between the rear housing 32 and the body housing 5 causes the dust collection assembly 4 to move rearward toward the body assembly 2 , causing the assembly support portion 29 to move rearward toward the support rib portion 27 . Then, the rear end portion of the assembly support portion 29 contacts the front surface of the support rib portion 27 . The filter assembly 3 moves rearward by moving the assembly support portion 29 rearward while being in contact with the support rib portion 27 . By moving the filter assembly 3 rearward, the holding rib member 22 arranged at the rear end portion of the filter assembly 3 is pressed against the front surface of the front plate portion 11B of the main body assembly 2 . The filter assembly 3 is sandwiched between the main body assembly 2 and the dust collection assembly 4 in the front-rear direction. A filter assembly 3 is secured to each of the body assembly 2 and the dust collection assembly 4 .

The holding rib member 22 is an elastic body and functions as a sealing member. For example, the lip portion 22B of the holding rib member 22 is in close contact with the front surface of the front plate portion 11B, thereby sealing the boundary between the rear end portion of the filter assembly 3 and the front plate portion 11B. That is, the boundary between the body assembly 2 and the filter assembly 3 around the suction port 14 is sealed by the retaining rib member 22 . As a result, leakage of the air flowing into the suction port 14 is suppressed, and reduction in the suction force of the suction unit 7 is suppressed.

[Filter unit]
FIG. 14 is an exploded perspective view from the front showing part of the dust collection assembly 4 according to the embodiment. FIG. 15 is an exploded rear perspective view showing part of the dust collection assembly 4 according to the embodiment.

The cyclone dust collection unit 40 includes a swirling member 43 that swirls air, a dust cup 42 into which the air that has passed through the swirling member 43 flows through the dust cup connecting tube portion 35, and an air that flows out from the dust cup 42 passes through. and a filter unit 50 .

The dust cup 42 is attachable/detachable to/from the dust cup connecting cylindrical portion 35 of the front housing 31 . The dust cup 42 has an internal space into which air from the inlet 35A of the cyclone dust collection unit 40 flows. The filter unit 50 is arranged inside the dust cup 42 .

FIG. 16 is a front perspective view showing the filter unit 50 according to the embodiment. FIG. 17 is a rear perspective view showing the filter unit 50 according to the embodiment. FIG. 18 is an exploded perspective view from the front showing the filter unit 50 according to the embodiment. FIG. 19 is an exploded perspective view from the rear showing the filter unit 50 according to the embodiment. FIG. 20 is a cross-sectional view showing the filter unit 50 according to the embodiment.

The filter unit 50 has a pre-filter 51 , a sound absorbing member 52 and a post-filter 53 . The sound absorbing member 52 is arranged around the post filter 53 . At least part of the pre-filter 51 is arranged around the sound absorbing member 52 .

The air that has flowed into the dust cup 42 via the swirl flow path 45 flows from the outside to the inside of the filter unit 50 . Air that has passed through the pre-filter 51 flows through the sound absorbing member 52 . Air that has passed through the sound absorbing member 52 flows through the post filter 53 .

The post filter 53 is made of synthetic resin. In the embodiment, post filter 53 is made of ABS resin. The post filter 53 includes a filter cylinder portion 53A, a filter cover portion 53B, a first fixed plate portion 53C, a second fixed plate portion 53D, a hole 53E, an outflow port 53F, a filter hook portion 53G, and a filter convex portion. It has a portion 53H.

The filter cover portion 53B covers the opening at one end in the axial direction of the filter cylinder portion 53A. In the embodiment, the filter cover portion 53B covers the opening at the front end of the filter cylinder portion 53A.

The first fixing plate portion 53C is provided at the other axial end portion of the filter cylinder portion 53A. In the embodiment, the first fixing plate portion 53C is provided at the rear end portion of the filter cylinder portion 53A. Two first fixing plate portions 53C are provided.

The second fixing plate portion 53D is provided at the rear end portion of the filter cylinder portion 53A. The second fixing plate portion 53D is arranged behind the first fixing plate portion 53C. The second fixing plate portion 53D protrudes radially outward of the filter tube portion 53A from the rear end portion of the filter tube portion 53A. Two second fixing plate portions 53D are provided. In the radial direction of the filter tube portion 53A, the projection amount of the second fixing plate portion 53D is larger than the projection amount of the first fixing plate portion 53C.

The hole 53E is provided in the filter tube portion 53A. The hole 53E is formed so as to penetrate the inner surface and the outer surface of the filter tube portion 53A. A plurality of holes 53E are provided at intervals in the filter tube portion 53A. Air passes through the holes 53E. The air around the filter unit 50 can pass through the hole 53E and flow into the inside of the filter cylinder portion 53A.

The outflow port 53F is provided at the rear end portion of the filter cylinder portion 53A. The air that has passed through the hole 53E and flowed into the filter cylindrical portion 53A flows out from the outlet 53F.

The filter hook portion 53G is provided at the front end portion of the filter tube portion 53A. The filter hook portion 53G protrudes forward from the front surface of the filter cover portion 53B. Two filter hook portions 53G are provided. Filter hook portion 53G includes a snap fit. The filter convex portion 53H is used for positioning with the pre-filter 51. As shown in FIG.

The filter convex portion 53H protrudes forward from the front surface of the filter cover portion 53B.

The sound absorbing member 52 is arranged around the filter tube portion 53A. The sound absorbing member 52 includes a cylindrical sponge member. The sponge member is made of urethane resin. The sponge member is a porous member having a plurality of holes 52A through which air passes.

At least part of the pre-filter 51 is arranged around the sound absorbing member 52 . The pre-filter 51 has a cylindrical mesh member 51A and a filter frame 51B that supports the mesh member 51A. The mesh member 51A is arranged around the sound absorbing member 52 . The mesh member 51A is made of nylon resin. The mesh member 51A has a plurality of holes 51C through which air passes.

As described above, the pre-filter 51 has holes 51C through which air passes. The sound absorbing member 52 has holes 52A through which air passes. The post-filter 53 has holes 53E through which air passes. The size of the holes 51C of the pre-filter 51 is smaller than the size of the holes 52A of the sound absorbing member 52 . The size of the hole 52A of the sound absorbing member 52 is smaller than the size of the hole 53E of the post filter 53. As shown in FIG.

As shown in FIG. 20, the outer surface of the filter tube portion 53A and the inner surface of the sound absorbing member 52 are in contact with each other. The outer surface of the sound absorbing member 52 and the inner surface of the pre-filter 51 are in contact with each other.

FIG. 21 is an exploded perspective view from the front showing the pre-filter 51 according to the embodiment. As shown in FIG. 21, the pre-filter 51 has a cylindrical mesh member 51A and a filter frame 51B that supports the mesh member 51A. The mesh member 51A and the filter frame 51B are integrated.

The filter frame 51B has a first fixing portion 51D fixed to the front end, which is one axial end of the mesh member 51A, and a second fixing portion fixed to the rear end, the other axial end of the mesh member 51A. 51E, and a frame connecting portion 51F connecting the first fixing portion 51D and the second fixing portion 51E. In the embodiment, the first fixing portion 51D, the second fixing portion 51E, and the frame connecting portion 51F are integrated (single member).

The first fixing portion 51D includes a cylindrical portion 51G arranged around the front end portion of the mesh member 51A, an annular portion 51H arranged so as to cover the opening of the front end portion of the mesh member 51A, and an annular portion 51H. and a filter connecting portion 51J protruding forward from the central portion. A hole 51K is provided in the filter connecting portion 51J. The filter hook portion 53G is hooked on the filter connecting portion 51J around the hole 51K while being inserted into the hole 51K.

As shown in FIG. 20, a recess 51L into which the filter projection 53H is inserted is formed on the rear surface of the filter connecting portion 51J.

The second fixing portion 51E has a cylindrical shape arranged around the rear end portion of the mesh member 51A.

The frame connecting portion 51F is arranged to connect the cylindrical portion 51G of the first fixing portion 51D and the second fixing portion 51E. The frame connecting portion 51F is rod-shaped. The frame connecting portion 51F is arranged inside the mesh member 51A. The frame connecting portion 51F supports the mesh member 51A. A plurality of frame connecting portions 51F are provided at intervals in the circumferential direction of the mesh member 51A. In the embodiment, four frame connecting portions 51F are provided at intervals in the circumferential direction of the mesh member 51A.

The pre-filter 51 and the post-filter 53 are positioned by inserting the filter convex portion 53H into the concave portion 51L. The pre-filter 51 and the post-filter 53 are fixed by hooking the filter connecting part 51J with the filter hook part 53G functioning as a snap fit inserted into the hole 51K.

The sound absorbing member 52 is sandwiched between the inner surface of the pre-filter 51 and the outer surface of the post-filter 53 .

The pre-filter 51, the sound absorbing member 52 and the post-filter 53 are separable. The pre-filter 51 and the post-filter 53 are separated by removing the filter hook portion 53G from the filter connecting portion 51J. By separating the pre-filter 51 and the post-filter 53, the pre-filter 51, the sound absorbing member 52 and the post-filter 53 are separated. Since the pre-filter 51, the sound absorbing member 52 and the post-filter 53 are separable, the user of the cleaner 1 can easily maintain the pre-filter 51, the sound absorbing member 52 and the post-filter 53 respectively. A user of the cleaner 1 can easily clean each of the pre-filter 51, the sound absorbing member 52, and the post-filter 53, for example.

A rear end portion of the post filter 53 is inserted into the filter unit connecting tube portion 39 . A rear end portion of the post filter 53 is arranged inside the filter unit connecting tube portion 39 . The filter unit 50 can be attached to and detached from the filter unit connecting tube portion 39 . An annular support portion 39</b>A is provided inside the rear end portion of the filter unit connecting tube portion 39 . A notch 39B through which the second fixing plate portion 53D can pass is provided in a part of the support portion 39A. After the second fixing plate portion 53D passes through the notch 39B, the filter unit 50 is rotated so that the first fixing plate portion 53C faces the front surface of the support portion 39A, and the second fixing plate portion 53D moves toward the support portion 39A. facing the back of the The first fixing plate portion 53C and the second fixing plate portion 53D sandwich the support portion 39A from the front-rear direction. Thereby, the filter unit 50 and the rear housing 32 are fixed. The fixation between the filter unit 50 and the rear housing 32 is released by rotating the filter unit 50 so that the second fixing plate portion 53D is aligned with the notch 39B. The filter unit 50 is attachable to and detachable from the rear housing 32 .

Outlet 53</b>F of filter unit 50 functions as an outlet of cyclone dust collection unit 40 . Air in the internal space of the dust cup 42 flows into the internal flow path of the filter unit 50 through the holes 53E. The air that has passed through the internal flow path of the filter unit 50 flows out from the outlet 53F of the cyclone dust collecting unit 40 .

The air that has flowed into the dust cup 42 via the swirling flow path 45 may pass through the hole 53E of the post filter 53, causing noise. For example, if the swirling air inside the dust cup 42 directly hits the surface of the filter tube portion 53A having the holes 53E, noise may occur. In the embodiment, the sound absorbing member 52 is arranged so as to cover the filter tube portion 53A. The sound absorbing member 52 prevents the swirling air inside the dust cup 42 from directly hitting the surface of the filter cylinder portion 53A having the holes 53E. This suppresses the generation of noise.

As described above, the sound absorbing member 52 is a sponge member. Therefore, foreign matter inside the dust cup 42 may stick to the surface of the sound absorbing member 52 . In the embodiment, a pre-filter 51 is arranged so as to cover the sound absorbing member 52 . The pre-filter 51 prevents foreign matter from sticking to the sound absorbing member 52 . The pre-filter 51 includes a mesh member 51A. Therefore, foreign matter is prevented from sticking to the pre-filter 51 .

[Lock mechanism]
FIG. 22 is a front perspective view showing the cleaner 1 according to the embodiment. FIG. 23 is a perspective view from the front showing the lock mechanism 36 according to the embodiment. FIG. 24 is a front perspective view showing the inlet pipe 34 and the extension pipe 100 according to the embodiment. FIG. 25 is a top view of the lock mechanism 36 according to the embodiment. FIG. 26 is a side view showing the locking mechanism 36 according to the embodiment. FIG. 27 is a cross-sectional view showing the lock mechanism 36 according to the embodiment.

The cleaner 1 has a lock mechanism 36 that fixes the extension pipe 100 connected to the inlet pipe 34 . The lock mechanism 36 fixes the inlet pipe 34 and the extension pipe 100 inserted into the inlet 34A of the inlet pipe 34 . At least part of the lock mechanism 36 is provided on the inlet pipe 34 . The lock mechanism 36 has a pipe lock lever 70 and a coil spring 63 .

As shown in FIG. 22, the pipe lock lever 70 is arranged below the dust cup 42 . As shown in FIG. 25, the dimension of the dust cup 42 is larger than the dimension of the pipe lock lever 70 in the left-right direction.

The pipe lock lever 70 has a body portion 71 , an overhang portion 72 and a pipe hook portion 73 . Each of the main body portion 71 and the projecting portion 72 is arranged outside the inlet pipe 34 . Each of the main body portion 71 and the projecting portion 72 faces the outer surface of the inlet pipe 34 .

The body portion 71 is arranged above the inlet pipe 34 . The outer shape of the main body portion 71 is a rectangular shape that is elongated in the front-rear direction. The pipe hook portion 73 is arranged on the body portion 71 . The pipe hook portion 73 is provided at the front end portion of the lower surface of the main body portion 71 . The pipe hook portion 73 is provided so as to protrude downward from the lower surface of the main body portion 71 .

The protruding portion 72 protrudes laterally from the side portion of the main body portion 71 . In the embodiment, the protruding portion 72 protrudes laterally from the rear portion of the side portion of the main body portion 71 . The outer shape of the projecting portion 72 is triangular. The surface of the protruding portion 72 slopes downward sideways and rearward.

In the embodiment, the protruding portion 72 includes a left protruding portion 72L protruding leftward from the left portion of the main body portion 71 and a right protruding portion 72R protruding rightward from the right portion of the main body portion 71. . The left protruding portion 72L protrudes leftward from the rear portion of the left portion of the main body portion 71 . The right protruding portion 72R protrudes rightward from the rear portion of the right portion of the main body portion 71 . The surface of the left projecting portion 72L slopes downward to the left and rearward. The surface of the right projecting portion 72R slopes downward to the right and rearward.

A pipe through hole 64 is provided in a portion of the inlet pipe 34 . The pipe through-hole 64 is formed so as to penetrate the outer surface and the inner surface of the inlet pipe 34 . The pipe hook portion 73 protrudes downward from the lower surface of the main body portion 71 . The pipe hook portion 73 can move inside the outer surface of the inlet pipe 34 via the pipe through hole 64 . The pipe hook portion 73 can be inserted inside the inlet pipe 34 .

The extension pipe 100 has a projecting portion 103 and an engaging portion 102 supported by the projecting portion 103 . The protrusion 103 protrudes upward from the upper surface of the extension pipe 100 . A front end portion of the engaging portion 102 is connected to the projecting portion 103 . The engaging portion 102 can be elastically deformed while being supported by the projecting portion 103 . The rear end of the engaging portion 102 moves vertically due to elastic deformation of the engaging portion 102 . A pipe recess 104 is provided on the upper surface of the engaging portion 102 .

A pipe hook portion 73 of the pipe lock lever 70 is hooked on a pipe concave portion 104 provided in the extension pipe 100 . The inlet pipe 34 and the extension pipe 100 are fixed by hooking the pipe hook portion 73 on the pipe concave portion 104 . The projection 103 faces the front end of the inlet pipe 34 while the pipe hook 73 is hooked on the pipe recess 104 .

The pipe lock lever 70 is rotatably supported by the inlet pipe 34 about the rotation axis RX. The rotation axis RX extends in the left-right direction. As shown in FIGS. 26 and 27 , the rotation axis RX of the pipe lock lever 70 is arranged behind the pipe hook portion 73 . The protruding portion 72 is arranged behind the rotation axis RX of the pipe lock lever 70 .

The coil spring 63 is arranged between the lower surface of the body portion 71 and the upper surface of the inlet pipe 34 . The coil spring 63 generates an elastic force such that the front end of the body portion 71 moves downward. A support projection 74 is provided on the lower surface of the body portion 71 . By inserting the support protrusion 74 into the coil spring 63, the pipe lock lever 70 and the coil spring 63 are positioned. A support recess 65 is formed on the outer surface of the inlet pipe 34 . By arranging the lower end of the coil spring 63 in the support recess 65, the inlet pipe 34 and the coil spring 63 are positioned.

A user of the cleaner 1 can unlock the extension pipe 100 by the lock mechanism 36 by operating the projecting portion 72 . The user operates the pipe lock lever 70 so that the projecting portion 72 moves downward. As the overhanging portion 72 moves downward, the pipe lock lever 70 rotates about the rotation axis RX so that the front end portion of the main body portion 71 moves upward. By moving the front end portion of the body portion 71 upward, the pipe hook portion 73 is removed from the pipe recess portion 104 . By removing the pipe hook portion 73 from the pipe concave portion 104, the fixing between the inlet pipe 34 and the extension pipe 100 is released.

Due to the elastic force of the coil spring 63, the pipe lock lever 70 rotates about the rotation axis RX so that the front end portion of the body portion 71 moves downward. With the extension pipe 100 inserted into the inlet 34A of the inlet pipe 34, the front end of the main body 71 moves downward, thereby inserting the pipe hook 73 into the pipe recess 104. As shown in FIG. By inserting the pipe hook portion 73 into the pipe concave portion 104, the inlet pipe 34 and the extension pipe 100 are fixed.

In an embodiment, the pipe lock lever 70 has anti-slip ribs 75 provided on the surface of the overhang 72 . The non-slip ribs 75 are composed of a plurality of protrusions protruding from the surface of the projecting portion 72 . The non-slip ribs 75 allow the user to smoothly operate the projecting portion 72 even if the surface of the projecting portion 72 is inclined.

In embodiments, the dust cup 42 is positioned directly above the pipe lock lever 70 . Even if it is difficult to operate the body portion 71 from the dust cup 42 , the user of the cleaner 1 can operate the protruding portion 72 to rotate the pipe lock lever 70 to separate the inlet pipe 34 and the extension pipe 100 . can be unfixed.

Note that the user may operate the body portion 71 so that the body portion 71 moves downward. A non-slip rib 76 is provided on the rear portion of the surface of the body portion 71 . The non-slip ribs 76 allow the user to smoothly operate the body portion 71 .

The dust collection assembly 4 has a lever guard 66 projecting laterally from the side of the inlet pipe 34 . A lever guard 66 protects the pipe lock lever 70 . The lever guard 66 protects at least the projecting portion 72 . The lever guard 66 is arranged at least partially around the protruding portion 72 . In embodiments, at least a portion of the lever guard 66 is positioned below the overhang 72 . At least a portion of the lever guard 66 is arranged behind the projecting portion 72 .

The lever guard 66 includes a left lever guard 66L that protects the left projecting portion 72L and a right lever guard 66R that protects the right projecting portion 72R. A portion of the left lever guard 66L is arranged below the left projecting portion 72L. A portion of the left lever guard 66L is arranged behind the left projecting portion 72L. A portion of the right lever guard 66R is arranged below the right projecting portion 72R. A portion of the right lever guard 66R is arranged behind the right projecting portion 72R.

The amount of protrusion of the lever guard 66 from the outer surface of the inlet pipe 34 in the left-right direction is greater than the amount of protrusion of the projecting portion 72 . Objects around inlet pipe 34 are likely to hit lever guard 66 before hitting overhang 72 . Thereby, the projecting portion 72 is protected by the lever guard 66 .

[Inlet pipe]
FIG. 28 is an exploded perspective view from the front showing part of the dust collection assembly 4 according to the embodiment. FIG. 29 is an exploded perspective view from the front showing the inlet pipe 34 according to the embodiment. FIG. 30 is a cross-sectional view showing the inlet pipe 34 according to the embodiment.

In this embodiment, the inlet pipe 34 includes a rear inlet pipe 341 integral with the body portion 33 and a front inlet pipe 342 detachable from the rear inlet pipe 341 . The body portion 33, the rear inlet pipe 341, and the dust cup connecting tubular portion 35 are integrated (single member).

An inlet lock lever 80 is provided on the front inlet pipe 342 . The inlet lock lever 80 is long in the front-rear direction. A front end portion of the inlet lock lever 80 is fixed to an inlet support portion 81 provided on the front inlet pipe 342 . The inlet lock lever 80 can be elastically deformed while being supported by the inlet support portion 81 . The rear end of the inlet lock lever 80 moves vertically due to elastic deformation of the inlet lock lever 80 . An inlet hook portion 82 protruding upward is provided at the rear end portion of the inlet lock lever 80 .

The rear inlet pipe 341 is provided with an inlet through hole 67 into which the inlet hook portion 82 is inserted. The inlet lock lever 80 generates an elastic force so that the inlet hook portion 82 is inserted into the inlet through hole 67 from below the inlet through hole 67 . The rear end portion of the front inlet pipe 342 is inserted into the insertion opening 34C provided at the front end portion of the rear inlet pipe 341, and the inlet hook portion 82 is inserted into the inlet through hole 67, thereby connecting the rear inlet pipe 341 and the front end. Inlet pipe 342 is fixed. The user can remove the inlet hook portion 82 from the inlet through hole 67 by pushing the inlet hook portion 82 downward against the elastic force of the inlet lock lever 80 . By removing the inlet hook portion 82 from the inlet through hole 67 , the user can pull out the front inlet pipe 342 from the rear inlet pipe 341 .

For example, when foreign matter is accumulated in the front housing 31 or the rear inlet pipe 341, the user can easily remove the foreign matter from the front housing 31 or the rear inlet pipe 341 by removing the front inlet pipe 342 from the rear inlet pipe 341. can be discharged.

In embodiments, a check valve 68 is located at the rear end of the front inlet pipe 342 . Check valve 68 allows fluid to move from front inlet pipe 342 to rear inlet pipe 341 and prevents fluid from moving from rear inlet pipe 341 to front inlet pipe 342 . In an embodiment, check valve 68 includes a rubber plate supported on the rear end of front inlet pipe 342 . The upper end of the rubber plate is connected to the rear end of the front inlet pipe 342 . The rubber plate blocks the opening at the rear end of front inlet pipe 342 , thereby preventing movement of fluid from rear inlet pipe 341 to front inlet pipe 342 .

For example, when the suction unit 7 is driven and a suction force is generated in the suction port 14, the lower end of the check valve 68 is lifted rearward. This opens the check valve 68 and transfers fluid from the front inlet pipe 342 to the rear inlet pipe 341 . For example, when the suction unit 7 is stopped and no suction force is generated in the suction port 14 , the check valve 68 moves so as to block the rear end opening of the front inlet pipe 342 . This causes the check valve 68 to close. By closing the check valve 68 , for example, foreign matter accumulated in the front housing 31 or the rear inlet pipe 341 is prevented from moving to the front inlet pipe 342 .

[how to use]
Next, how to use the cleaner 1 will be described. When the drive button 9B is operated and the motor 7B is driven, the fan 7A rotates. A suction force is generated at the suction port 14 by rotating the fan 7A. Due to the suction force generated at the suction port 14 , the air is sucked into the extension pipe 100 together with the foreign matter from the suction port of the suction nozzle 101 . Foreign matter includes dust. The air that has flowed through the extension pipe 100 flows into the internal flow path of the inlet pipe 34 via the inlet 34A of the inlet pipe 34 . The air that has flowed through the internal flow path of the inlet pipe 34 flows out from the outlet 34B of the inlet pipe 34 .

The outflow port 34B of the inlet pipe 34 and the inflow port 35A of the cyclone dust collecting unit 40 are connected via a swirling flow path 45 provided in the cyclone housing 30. As shown in FIG. Air flowing out from the outlet 34B of the inlet pipe 34 flows through the swirl flow path 45 and then flows into the cyclone dust collecting unit 40 via the inlet 35A.

Entering air into the cyclone dust collection unit 40 includes entering the interior space of the dust cup 42 . The air that has flowed into the internal space of the dust cup 42 through the swirl flow path 45 swirls in the inner space of the dust cup 42 . In the dust cup 42, air and foreign matter are separated by centrifugal force. Foreign matter is deposited in the dust cup 42 . The air separated from the foreign matter passes through the filter unit 50 and flows out from the outlet 53</b>F of the cyclone dust collection unit 40 . After passing through the pre-filter 51 and the sound absorbing member 52 , the air passes through the post-filter 53 and flows out from the outlet 53</b>F provided at the rear end of the post-filter 53 .

The outflow port 53</b>F of the cyclone dust collection unit 40 is connected to the internal space of the assembly tube portion 37 . The air that has flowed out from the outlet 53</b>F of the cyclone dust collection unit 40 into the internal space of the tubular assembly portion 37 flows into the filter 19 of the filter assembly 3 . The filter 19 collects minute foreign matter that has not been collected by the cyclone dust collection unit 40 . The air that has passed through the filter 19 flows into the internal space of the body housing 5 via the suction port 14 . The air that has flowed into the internal space of the body housing 5 is discharged from the exhaust port 15 to the external space of the body housing 5 after passing through the fan 7A and the motor 7B.

[effect]
As described above, according to the embodiment, the cyclone dust collection unit 40 includes the swirling member 43 that swirls air, the dust cup 42 into which the air that has passed through the swirling member 43 flows, and the air that flows out from the dust cup 42. and a filter unit 50 through which the The filter unit 50 has a pre-filter 51, a sound absorbing member 52 through which the air passing through the pre-filter 51 flows, and a post-filter 53 through which the air passing through the sound absorbing member 52 flows.

In the above configuration, air flowing out of the dust cup 42 passes through the sound absorbing member 52 before passing through the post filter 53 . Air swirling inside the dust cup 42 does not hit the post filter 53 directly. Therefore, noise generated from the post-filter 53 is suppressed. Also, the air flowing out of the dust cup 42 passes through the pre-filter 51 before passing through the sound absorbing member 52 . Therefore, foreign matter inside the dust cup 42 is suppressed from adhering to the sound absorbing member 52 .

In the embodiment, the pre-filter 51 has holes 51C through which air passes, the sound absorbing member 52 has holes 52A through which air passes, and the post-filter 53 has holes 53E through which air passes. The size of the holes 51C of the pre-filter 51 is smaller than the size of the holes 52A of the sound absorbing member 52 . The size of the hole 52A of the sound absorbing member 52 is smaller than the size of the hole 53E of the post filter 53. As shown in FIG.

In the above configuration, the air flowing out of the dust cup 42 passes through the hole 52A of the sound absorbing member 52, which is smaller than the hole 53E of the post filter 53, before passing through the hole 53E of the post filter 53. Since the size of the hole 52A of the sound absorbing member 52 is smaller than the size of the hole 53E of the post filter 53, noise generated from the post filter 53 is suppressed. Also, the air flowing out of the dust cup 42 passes through the hole 51C of the pre-filter 51 which is smaller than the hole 52A of the sound absorbing member 52 before passing through the hole 52A of the sound absorbing member 52 . Since the size of the holes 51C of the pre-filter 51 is smaller than the size of the holes 52A of the sound absorbing member 52, foreign matter inside the dust cup 42 is suppressed from adhering to the sound absorbing member 52.

In the embodiment, the post filter 53 has a filter tube portion 53A. The sound absorbing member 52 is arranged around the filter tube portion 53A. At least part of the pre-filter 51 is arranged around the sound absorbing member 52 .

In the above configuration, the air inside the dust cup 42 can pass through the pre-filter 51 , the sound absorbing member 52 , and then the post-filter 53 . Since the filter cylinder portion 53A of the post filter 53 is covered with the sound absorbing member 52, noise generated from the post filter 53 is suppressed. Since the sound absorbing member 52 is covered with the pre-filter 51 , foreign matter inside the dust cup 42 is prevented from adhering to the sound absorbing member 52 .

In the embodiment, the outer surface of the filter tube portion 53A and the inner surface of the sound absorbing member 52 are in contact with each other. The outer surface of the sound absorbing member 52 and the inner surface of the pre-filter 51 are in contact with each other.

With the above configuration, an increase in size of the filter unit 50 is suppressed.

In the embodiment, sound absorbing member 52 is sandwiched between pre-filter 51 and post-filter 53 .

In the above configuration, the sound absorbing member 52 is fixed to each of the pre-filter 51 and the post-filter 53 by sandwiching the sound absorbing member 52 between the pre-filter 51 and the post-filter 53 .

In the embodiment, the post filter 53 has a filter hook portion 53G provided at the front end portion, which is one axial end portion of the filter cylinder portion 53A. The pre-filter 51 has a filter connecting portion 51J provided at a front end portion, which is one end portion in the axial direction of the pre-filter 51, to which the filter hook portion 53G is hooked.

In the above configuration, the pre-filter 51 and the post-filter 53 are fixed by hooking the filter hook portion 53G of the post-filter 53 on the filter connecting portion 51J of the pre-filter 51 .

In embodiments, the pre-filter 51, the sound absorbing member 52 and the post-filter 53 are separable.

In the above configuration, the pre-filter 51, the sound absorbing member 52, and the post-filter 53 are separated by removing the filter hook portion 53G from the filter connecting portion 51J. By separating the pre-filter 51, the sound absorbing member 52, and the post-filter 53, the user of the cleaner 1 can smoothly maintain the pre-filter 51, the sound absorbing member 52, and the post-filter 53, respectively.

In an embodiment, the pre-filter 51 includes a cylindrical mesh member 51A.

In the above configuration, foreign matter inside the dust cup 42 is suppressed from sticking to the pre-filter 51 . When foreign matter adheres to the surface of the pre-filter 51 , the user of the cleaner 1 can easily remove the foreign matter adhering to the surface of the pre-filter 51 .

In the embodiment, the mesh member 51A is made of nylon resin.

In the above configuration, foreign matter inside the dust cup 42 is suppressed from sticking to the pre-filter 41 .

In the embodiment, the pre-filter 51 has a filter frame 51B supporting a mesh member 51A.

In the above configuration, since the mesh member 51A is supported by the filter frame 51B, deformation of the mesh member 51A is suppressed.

In the embodiment, the mesh member 51A and the filter frame 51B are integral.

In the above configuration, change in relative position between the mesh member 51A and the filter frame 51B is suppressed.

In the embodiment, the filter frame 51B is fixed to a first fixing portion 51D fixed to the front end portion, which is one axial end portion of the mesh member 51A, and to a rear end portion, which is the other axial end portion of the mesh member 51A. It has a second fixing portion 51E and a frame connecting portion 51F connecting the first fixing portion 51D and the second fixing portion 51E.

In the above configuration, deformation of the mesh member 51A is suppressed. Also, the air inside the dust cup 42 can pass through the mesh member 51A between the first fixing portion 51D, the second fixing portion 51E, and the frame connecting portion 51F.

In embodiments, the sound absorbing member 52 includes a cylindrical sponge member.

In the above configuration, since the sound absorbing member 52 is a sponge member, noise generated from the post filter 53 is effectively suppressed. Also, the user of the cleaner 1 can smoothly attach the sound absorbing member 52 to the post filter 53 .

In an embodiment, the sponge member is made of urethane resin.

With the above configuration, noise generated from the post-filter 53 is effectively suppressed. Also, the user of the cleaner 1 can smoothly attach the sound absorbing member 52 to the post filter 53 .

In the embodiment, the post filter 53 has a filter cylinder portion 53A and a filter cover portion 53B that covers an opening at a front end portion, which is one axial end portion of the filter cylinder portion 53A. A hole 53E through which air passes is provided in the filter cylinder portion 53A.

In the above configuration, the air inside the dust cup 42 can pass through the pre-filter 51 , the sound absorbing member 52 , and then the filter tube portion 53 A of the post-filter 53 . Since the filter cylinder portion 53A of the post filter 53 is covered with the sound absorbing member 52, noise generated from the post filter 53 is suppressed. Since the sound absorbing member 52 is covered with the pre-filter 51 , foreign matter inside the dust cup 42 is prevented from adhering to the sound absorbing member 52 .

In the embodiment, the air that has passed through the hole 53E of the cylindrical filter portion 53A flows out from the outflow port 53F at the rear end, which is the other end in the axial direction of the cylindrical filter portion 53A.

In the above configuration, the air that has flowed into the dust cup 42 passes through the filter unit 50 and then flows out from the outlet 53F at the rear end, which is the other end in the axial direction of the filter cylinder 53A.

In the embodiment, post filter 53 is made of ABS resin.

The above configuration ensures the strength of the filter unit 50 .

[Other embodiments]
In the above-described embodiment, the first fixing portion 51D, the second fixing portion 51E, and the frame connecting portion 51F are integrated (single member). The first fixing portion 51D, the second fixing portion 51E, and the frame connecting portion 51F may be separate bodies. The first fixing portion 51D, the second fixing portion 51E, and the frame connecting portion 51F may be separable. Also, in the filter frame 51B, the frame connecting portion 51F may be omitted. The filter frame 51B may have only the first fixing portion 51D and the second fixing portion 51E.

In the above-described embodiment, the cleaner 1 is a cyclone cleaner. Cleaner 1 need not be a cyclone cleaner.

DESCRIPTION OF SYMBOLS 1... Cleaner 2... Main body assembly 3... Filter assembly 4... Dust collection assembly 5... Main body housing 5L... Left housing 5R... Right housing 5S... Screw 6... Battery attachment part 7... Suction unit 7A... fan, 7B... motor, 7C... motor case, 7D... opening, 7E... rib, 8... controller, 9... operation panel, 9A... drive mode switching button, 9B... drive button, 9C... light emitting unit, 10... light , 11... body part, 11A... side plate part, 11B... front plate part, 11C... inner cylinder part, 11D... outer cylinder part, 11E... groove, 11F... convex part, 11G... groove, 12... grip part, 13... battery Holding portion 14 Suction port 15 Exhaust port 16 Sound absorbing member 17 Battery pack 18 Support frame 19 Filter 21 Filter fixing member 22 Holding rib member 22A Fixing portion 22B lip portion 23 first lattice portion 23A first ring portion 23B first rod portion 24 second lattice portion 24A second ring portion 24B third ring portion 24C second Rod part 24D... Third rod part 25... Front tube part 26... Rear tube part 27... Support rib part 28... Engagement convex part 29... Assembly support part 30... Cyclone housing 31... Front Housing 32 Rear housing 33 Body portion 34 Inlet pipe 34A Inflow port 34B Outflow port 34C Insertion port 35 Dust cup connecting cylindrical portion 35A Inflow port 35R Recess 36 Lock mechanism 37 Assembly tube portion 38 Assembly plate portion 39 Filter unit connection tube portion 39A Support portion 39B Notch 40 Cyclone dust collection unit 42 Dust cup 43 Turning member 43A First turning member 43B Second turning member 44 Lock part 45 Turning flow path 50 Filter unit 51 Pre-filter 51A Mesh member 51B Filter frame 51C Hole 51D First fixing portion 51E Second fixing portion 51F Frame connecting portion 51G Cylindrical portion 51H Annular portion 51J Filter connecting portion 51K Hole 51L Concave portion 52 Sound absorbing member 52A ... hole 53 ... post filter 53A ... filter cylinder portion 53B ... filter cover portion 53C ... first fixing plate portion 53D ... second fixing plate portion 53E ... hole 53F ... outlet 53G ... filter hook portion , 53H... Filter convex part 60... Screw 61... Screw hole 62... Opening 63... Coil spring 64... Pipe through hole 65... Support concave part 66... Lever guard 66L... Left lever guard 66R... Right Lever guard 67 Inlet through hole 68 Check valve 70 Pipe lock lever 71 Main body 72 Overhang 72L Left overhang 72R Right overhang 73 Pipe hook , 74... Support convex portion 75... Anti-slip rib 76... Anti-slip rib 80... Inlet lock lever 81... Inlet support part 82... Inlet hook part 100... Extension pipe 101... Suction nozzle 102... Engagement Joining portion 103 Protruding portion 104 Pipe concave portion 341 Rear inlet pipe 342 Front inlet pipe AX Rotation shaft RX Rotation shaft

Claims (18)

a swirling member for swirling air;
a dust cup into which the air passing through the turning member flows;
a filter unit through which the air flowing out from the dust cup passes;
The filter unit has a pre-filter, a sound absorbing member through which air that has passed through the pre-filter flows, and a post-filter through which air that has passed through the sound absorbing member flows,
Cyclone dust collection unit. each of the pre-filter, the sound absorbing member, and the post-filter has a hole through which air passes;
The size of the holes of the pre-filter is smaller than the size of the holes of the sound absorbing member,
The hole size of the sound absorbing member is smaller than the hole size of the post filter.
A cyclone dust collecting unit according to claim 1. The post filter has a filter cylinder,
The sound absorbing member is arranged around the filter cylinder,
At least part of the pre-filter is arranged around the sound absorbing member,
A cyclone dust collecting unit according to claim 1 or 2. the outer surface of the filter cylinder and the inner surface of the sound absorbing member are in contact,
the outer surface of the sound absorbing member and the inner surface of the pre-filter are in contact;
A cyclone dust collecting unit according to claim 3. The sound absorbing member is sandwiched between the pre-filter and the post-filter,
A cyclone dust collecting unit according to claim 3 or 4. The post filter has a filter hook portion provided at one axial end portion of the filter cylinder portion,
The pre-filter has a filter connecting portion provided at one end in the axial direction of the pre-filter and on which the filter hook portion is hooked,
A cyclone dust collecting unit according to any one of claims 3 to 5. The pre-filter, the sound absorbing member and the post-filter are separable,
A cyclone dust collecting unit according to any one of claims 3 to 6. The pre-filter includes a cylindrical mesh member,
A cyclone dust collection unit according to any one of claims 1 to 7. The mesh member is made of nylon resin,
A cyclone dust collecting unit according to claim 8. The pre-filter has a filter frame that supports the mesh member,
A cyclone dust collecting unit according to claim 8 or 9. The mesh member and the filter frame are integrated,
A cyclone dust collecting unit according to claim 10. The filter frame includes a first fixing portion fixed to one axial end portion of the mesh member, a second fixing portion fixed to the other axial end portion of the mesh member, and the first fixing portion and the second fixing portion. and a frame connecting portion that connects the 2 fixing portions,
A cyclone dust collection unit according to claim 10 or claim 11. The sound absorbing member includes a cylindrical sponge member,
A cyclone dust collecting unit according to any one of claims 1 to 12. The sponge member is made of urethane resin,
A cyclone dust collection unit according to claim 13. The post-filter has a filter cylindrical portion and a filter cover portion covering an opening at one axial end of the filter cylindrical portion,
A hole through which air passes is provided in the filter cylinder,
A cyclone dust collection unit according to any one of claims 1 to 14. The air that has passed through the hole of the filter cylinder flows out from an outlet at the other end in the axial direction of the filter cylinder.
A cyclone dust collection unit according to claim 15. The post filter is made of ABS resin,
A cyclone dust collecting unit according to claim 15 or 16. A cyclone dust collection unit according to any one of claims 1 to 17,
Cleaner.

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