Working machine

Abstract

To provide a working machine with improved convenience.SOLUTION: A cleaner, which is a working machine, comprises a holding part 6 detachably holding a dust collection bag 7. The dust collection bag 7 has: a base part 71 which has a plate-like shape extending in a first extension direction DD1 and a second extension direction, and having a ventilation port; and a bag-like bag part 72 which is connected to the base part 71. The holding part 6 has: a first engaging part 621 which is disposed on one side in the first extension direction DD1 from the ventilation port so as to overlap the ventilation port in the first extension direction DD1, and is switchable between engagement with and disengagement from the base part 71 by rotating about a first rotary shaft 623; a second engaging part 622 which is disposed on the other side in the first extension direction DD1 from the ventilation port so as to overlap the ventilation port in the first extension direction DD1, and is switchable between engagement with and disengagement from the base part 71 by rotating about a second rotary shaft 624; and a third engaging part which is disposed on one side in the second extension direction from the ventilation port so as to overlap the ventilation port in the second extension direction, and engages with the base part 71.SELECTED DRAWING: Figure 17

Description

Technical Field

[0001] The present invention relates to a working machine.

Background Art

[0002] As an example of a working machine, there is a working machine used for dust collection work. Patent Document 1 discloses a working machine including a fan rotationally driven by a motor and a dust bag (dust collection bag) that separates dust from the air sucked by the fan. Inside this working machine, the dust bag is detachably accommodated.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the working machine of Patent Document 1, in order to improve the detachability of the dust bag, it is conceivable to provide an engaging portion such as a latch. In this case, depending on the shape of the support surface of the backing paper of the dust pack, the backing paper may be deformed, the sealing property between the dust bag and the member to which the dust bag is attached may be impaired, and the convenience may be reduced.

Means for Solving the Problems

[0005] The working machine according to one embodiment includes a motor, a fan that rotates by receiving the driving force of the motor, a dust collection bag capable of collecting dust inside, a housing portion that supports the motor and the fan, and a holding portion that is attached to the housing portion and detachably holds the dust collection bag. The dust collection bag has a plate shape extending in a first extending direction and a second extending direction orthogonal to the first extending direction, and has a base portion having a ventilation port, and a bag-shaped bag portion connected to the base portion. The holding portion is disposed on one side in the first extending direction with respect to the ventilation port so as to overlap the ventilation port in the first extending direction, and includes a first engaging portion capable of switching engagement and disengagement with the base portion by rotating about a first rotation axis; a second engaging portion disposed on the other side in the first extending direction with respect to the ventilation port so as to overlap the ventilation port in the first extending direction, and capable of switching engagement and disengagement with the base portion by rotating about a second rotation axis; and a third engaging portion disposed on one side in the second extending direction with respect to the ventilation port so as to overlap the ventilation port in the second extending direction and engaging with the base portion.

[0006] The working machine according to one embodiment includes a motor, a fan that rotates by receiving the driving force of the motor, a dust collection bag capable of collecting dust inside, a main body portion that supports the motor and the fan, a lid portion that, when attached to the main body portion, cooperates with the main body portion to define a dust collection chamber for accommodating the dust collection bag, and a holding portion that is attached to the lid portion and detachably holds the dust collection bag. The dust collection bag has a plate shape extending in a first extending direction and a second extending direction orthogonal to the first extending direction, and has a base portion having a ventilation port, and a bag-shaped bag portion connected to the base portion. The holding portion is disposed on one side in the first extending direction with respect to the ventilation port so as to overlap the ventilation port in the first extending direction, and includes a first engaging portion that engages with the base portion; a second engaging portion disposed on the other side in the first extending direction with respect to the ventilation port so as to overlap the ventilation port in the first extending direction, and capable of switching engagement and disengagement with the base portion; and a third engaging portion disposed on one side in the second extending direction with respect to the ventilation port so as to overlap the ventilation port in the second extending direction and engaging with the base portion.

Advantages of the Invention

[0007] According to the present invention, a working machine with improved convenience can be provided.

Brief Description of the Drawings

[0008]

Figure 1

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Figure 31

Mode for Carrying Out the Invention

[0009] <First Embodiment> With reference to the drawings, the working machine of the first embodiment will be described. The working machine of the present embodiment is a portable cleaner (vacuum cleaner) suitably used for dust collection work. FIG. 1 is a side view showing the appearance of the cleaner 1 of the present embodiment. FIG. 2 is a front view showing the appearance of the cleaner 1. FIG. 3 is a cross-sectional view of the cleaner 1 taken along line A-A shown in FIG. 2. FIG. 4 is a cross-sectional view of the cleaner 1 taken along line B-B shown in FIG. 3.

[0010] <Overall Configuration> The cleaner 1 includes a housing portion 2, a motor 4, a fan 5, and a holding portion 6. The housing portion 2 has a main body portion 21 and a lid portion 22. The lid portion 22 is detachably provided on the main body portion 21. The motor 4 and the fan 5 are housed inside the main body portion 21. The holding portion 6 is provided on the lid portion 22 and detachably holds the dust collection bag 7. That is, the dust collection bag 7 is detachable from the lid portion 22.

[0011] <Housing Portion 2> The housing portion 2 is composed of the above-described main body portion 21 and lid portion 22, which are molded from synthetic resin.

[0012] <Main Body Portion 21> The main body portion 21 is composed of a housing portion 210 and a dust collection case 211. Specifically, the housing portion 210 and the dust collection case 211 are detachably provided along a first direction D1 parallel to the central axis X. The dust collection case 211 houses the dust collection bag 7 attached to the holding portion 6 provided on the lid portion 22.

[0013] In the following description, the first direction D1 may also be referred to as the front-rear direction of the cleaner 1. Also, along the first direction D1, the side from the housing portion 210 toward the dust collection case 211 may be referred to as one side or the front side, and the side from the dust collection case 211 toward the housing portion 210 may be referred to as the other side or the rear side.

[0014] <Housing Portion 210> FIG. 5 is a perspective view of the cleaner 1 with the dust collection case 211 removed from the housing portion 210. The housing portion 210 is composed of two casings 210a and 210b formed of a synthetic resin. The casings 210a and 210b are fixed to each other in a butted state to form the housing portion 210. More specifically, the casings 210a and 210b are fixed to each other by fixing elements such as screws. In other words, if the fixing by the fixing elements is released, the casing 210a and the casing 210b constituting the housing portion 210 can be separated from each other.

[0015] Incidentally, a direction that is orthogonal to the first direction D1 and parallel to the direction in which the casings 210a and 210b are arranged is referred to as a second direction D2. In the second direction D2, the side of the casing 210a may be referred to as one side or the right side, and the side of the casing 210b may be referred to as the other side or the left side. Also, a direction that is orthogonal to the first direction D1 and the second direction D2 is referred to as a third direction D3. In the third direction D3, the side from the battery pack 13, which will be described later, toward the grip 9 may be referred to as one side or the upper side, and the side from the grip 9 toward the battery pack 13 may be referred to as the other side or the lower side.

[0016] As shown in FIG. 5, an inlet 18 that communicates with a fan 5, which will be described later, is provided on the front surface (front face) of the housing portion 210. Around the inlet 18, a housing-side first engaging portion 31 and a housing-side second engaging portion 32 are provided. When the dust collection case 211, which will be described later, is attached to the housing portion 210, the housing-side first engaging portion 31 and the housing-side second engaging portion 32 engage with case-side engaging portions 215a and 215b provided on the dust collection case 211.

[0017] The housing-side first engaging portion 31 is a groove that opens toward the outer side in the radial direction and surrounds the entire circumference or substantially the entire circumference of the inlet 18. The housing-side second engaging portion 32 is provided inside the housing-side first engaging portion 31. More specifically, the housing-side second engaging portion 32 is provided at a position that is inside the housing-side first engaging portion 31 in the radial direction and overlaps the housing-side first engaging portion 31 in the front-rear direction. Further, the housing-side second engaging portion 32 is common with the housing-side first engaging portion 31 in that it is a groove provided around the inlet 18. Further, notches 37 through which the case-side engaging portions 215a and 215b (see FIG. 4), which will be described later, can pass in the front-rear direction are provided at two locations in the circumferential direction of the housing-side first engaging portion 31.

[0018] A pack support portion 40 for supporting the dust collection bag 7 and a filter 41 for the support portion are provided on the front side of the inlet 18 of the housing portion 210. The pack support portion 40 includes a cylindrical portion 401 having a cylindrical shape centered on the central axis X and a flange portion 402 formed at the rear end of the cylindrical portion 401. Slits and mesh-shaped openings are formed in the front wall surface 401a and the side wall surface 402b on the front side of the cylindrical portion 401.

[0019] Engaging recesses 402a, which are latch portions provided in respective ones of a pair of recesses, are provided on the side wall surface of the flange portion 402. The respective engaging recesses 402a are arranged at positions that are 180 degrees different from each other in the circumferential direction of the side wall surface of the flange portion 402. For example, as shown in FIG. 5, the engaging recesses 402a are arranged on the right side and the left side with respect to the central axis X.

[0020] A pair of engaging protrusions 180, which are latch portions protruding toward the central axis X, are provided on the inner wall surface of the inlet 18. The respective engaging protrusions 180 are arranged at positions that are 180 degrees different from each other in the circumferential direction of the inner wall surface of the inlet 18. For example, as shown in FIG. 5, the engaging protrusions 180 are arranged on the right side and the left side with respect to the central axis X. The pack support portion 40 is attached to the inlet 18 by the two engaging recesses 402a and the two engaging protrusions 180 engaging with each other.

[0021] The filter 41 for the support part is a porous synthetic resin such as a sponge, for example, and has a cylindrical shape as a whole. A through hole 410 penetrating the filter 41 for the support part in the front - rear direction is formed around the central axis X. The diameter of the through hole 410 is substantially equal to the outer diameter of the cylindrical part 401 of the pack support part 40. Therefore, when the cylindrical part 401 is inserted into the through hole 410, the filter 41 for the support part is attached to the pack support part 40.

[0022] Near the rear end of the housing part 210, a battery mounting part 14 on which the battery pack 13 is mounted is provided. The battery pack 13 is a rechargeable secondary battery (for example, a lithium - ion battery). The battery pack 13 and the battery mounting part 14 each have connection terminals. When the battery pack 13 is mounted on the battery mounting part 14, the connection terminals provided on each are electrically connected.

[0023] The housing part 210 houses the motor 4, the fan 5, the controller 15, etc. That is, the housing part 210 functions as a motor housing part that houses the motor 4 and the fan 5. In other words, the main body part 21 supports the motor 4 and the fan 5. It can also be said that the housing part 2 supports the motor 4 and the fan 5.

[0024] The motor 4 housed in the housing part 210 includes a motor body including a rotor and a stator, and an output shaft 411 that rotates integrally with the rotor. One end side (tip side) of the output shaft 411 protrudes from the motor body and is connected to the fan 5. Incidentally, the central axis X shown in each figure is also the central axis of the output shaft 411 of the motor 4. That is, in the present embodiment, the longitudinal direction of the output shaft 411 corresponds to the front - rear direction of the cleaner 1.

[0025] The fan 5 housed in the housing portion 210 is a centrifugal fan that is rotationally driven by receiving the driving force of the motor 4. When the fan 5 is rotationally driven by the motor 4, an air flow is formed that flows into the interior of the housing portion 210 from the intake port 213 provided in front of the dust collection case 211, via the dust collection case 211 and the dust collection bag 7, and through the inlet 18. The air that has flowed into the housing portion 210 passes through the interior of the housing portion 210 and is exhausted from a plurality of outlet ports 19 formed in the housing portion 210. At this time, at least a part of the air flow passing through the interior of the housing portion 210 passes around the motor 4 and takes heat away from the motor 4. As a result, the motor 4 is cooled.

[0026] In addition, the motor 4 operates based on the operation of the operation portion 8 provided on the grip 9 which is a part of the housing portion 210. More specifically, when the operation portion 8 is operated by the user, power is supplied from the battery pack 13 to the motor 4 under the control of the controller 15, and the motor 4 operates.

[0027] <dust collection case 211> The dust collection case 211 is detachable from the housing portion 210. The dust collection case 211 is formed of a synthetic resin and has a cylindrical shape as a whole. At the tip of the dust collection case 211, that is, the front end portion, a cylindrical nozzle (inflow pipe) 214 having an intake port 213 into which the air flow generated by the fan 5 described later flows is integrally formed. The interior of the nozzle 214 defines a flow path that penetrates the dust collection case 211 to communicate the inside and outside of the dust collection chamber 212 described later, and through which the air flow flowing from the outside to the inside of the dust collection chamber 212 flows.

[0028] At the rear end of the dust collection case 211, that is, the rear end portion, a pair of case-side engaging portions 215a and 215b are provided (see Fig. 4). More specifically, a pair of case-side engaging portions 215a and 215b that protrude radially inward are integrally formed on the inner surface of the rear end of the dust collection case 211. Each of the case-side engaging portions 215a and 215b is a protrusion extending in the circumferential direction of the dust collection case 211, and they are arranged at positions that are 180 degrees different from each other in the circumferential direction of the dust collection case 211. For example, as shown in Fig. 4, the case-side engaging portions 215a and 215b are arranged on the right side and the left side with respect to the central axis X.

[0029] The dust collection case 211 is detachably attached to the housing portion 210 by being relatively rotated with respect to the housing portion 210 about the central axis X as the rotation axis. In this case, when the dust collection case 211 is rotated so that the positions of the case-side engaging portions 215a and 215b coincide with the positions of the notch portions 37 formed in the housing-side first engaging portion 31 of the housing portion 210, the case-side engaging portions 215a and 215b can be inserted into and removed from the housing-side first engaging portion 31.

[0030] With the positions of the case-side engaging portions 215a and 215b and the notch portions 37 being aligned, when the dust collection case 211 is relatively rotated with respect to the housing portion 210 in the R1 direction shown in Fig. 2, the case-side engaging portions 215a and 215b move in the R1 direction within the housing-side first engaging portion 31. Then, when the dust collection case 211 reaches a predetermined rotation angle (for example, about 120 degrees), the case-side engaging portions 215a and 215b and the housing-side first engaging portion 31 are normally engaged, and the dust collection case 211 is normally attached to the housing portion 210.

[0031] On one hand, when the dust collection case 211 attached as described above rotates relative to the R2 direction shown in FIG. 2, the case-side engaging portions 215a and 215b move in the R2 direction within the housing-side first engaging portion 31. When the rotation angle of the dust collection case 211 reaches approximately 120 degrees, the positions of the case-side engaging portions 215a and 215b coincide with the positions of the two notches 37. When the dust collection case 211 is pulled forward in this state, the case-side engaging portions 215a and 215b are pulled out from the housing-side first engaging portion 31 through the respective notches 37. That is, the engagement between the case-side engaging portions 215a and 215b and the housing-side first engaging portion 31 is released, and the dust collection case 211 is removed from the housing portion 210.

[0032] The dust collection case 211 attached to the housing portion 210 cooperates with the lid portion 22 described later to form a dust collection chamber 212 in front of the housing portion 210 (between the dust collection case 211 and the housing portion 210). In other words, the dust collection case 211 is a dust collection chamber defining portion that defines the dust collection chamber 212 between the housing portion 210 and the lid portion 22. The dust collection bag 7 attached to the lid portion 22 as described later is accommodated in the dust collection chamber 212.

[0033] The lid portion 22 described later is detachably attached to the upper side of the dust collection case 211. On the upper side of the dust collection case 211, a case opening 216 (see FIG. 9 described later) and case-side engaging portions 217 and 218 are formed. The case opening 216 is an opening through which the dust collection bag 7 passes when the lid portion 22 with the dust collection bag 7 attached is detached from and attached to the dust collection case 211 as described later.

[0034] The case-side engaging portion 217 is formed at the front end portion of the case opening 216. Specifically, the case-side engaging portion 217 is a groove formed on the rear end surface above the nozzle 214. The case-side engaging portion 218 is formed at the rear end portion of the case opening 216. Specifically, the case-side engaging portion 218 is formed on the opening wall surface 216a at the rear end portion of the case opening 216. The opening wall surface 216a is orthogonal to the first direction D1 and is connected to the outer surface of the dust collection case 211. The case-side engaging portion 218 is a latch protruding forward on the opening wall surface 216a.

[0035] <Cover portion 22> FIG. 6 is a perspective view of the cover portion 22 as viewed from below. FIG. 7 is a plan view of the cover portion 22 as viewed from below. FIG. 8 is a side view of the cover portion 22.

[0036] The cover portion 22 is detachable from the dust collection case 211 as described above. The cover portion 22 is formed of a synthetic resin. The cover portion 22 is formed by an outer surface 220, a front surface 221, and a rear wall surface 222. The outer surface 220 is formed to be a curved surface along the cylindrical shape of the dust collection case 211 when the cover portion 22 is attached to the dust collection case 211. That is, the cover portion 22 constitutes the outer shell of the cleaner 1.

[0037] The front surface 221 is connected to the front side of the outer surface 220, and the rear wall surface 222 is connected to the rear side of the outer surface 220. The lower end portions of the outer surface 220, the front surface 221, and the rear wall surface 222 form an edge (opening edge) 224 of the opening 223. A seal member 224a such as a packing is attached to the opening edge 224.

[0038] The cover portion 22 has a hinge portion 225, a cover operation portion 226, and a cover-side engaging portion 227. The hinge portion 225 is provided at the lower end portion of the front surface 221. The hinge portion 225 extends along the second direction D2 on the front surface 221. When the cover portion 22 is attached to the dust collection case 211, the hinge portion 225 is accommodated in the case-side engaging portion 218.

[0039] The lid operation part 226 is disposed within a mounting recess 228 (see FIGS. 3 and 8) formed at the upper rear end of the outer surface 220 so as to be slidable in the front-rear direction. Specifically, an elastic member 229 such as a spring (see FIG. 3) disposed between the rear wall surface of the lid operation part 226 and the wall surface formed in the mounting recess 228 biases the lid operation part 226 rearward. When an external force acts on the lid operation part 226 toward the front side, the lid operation part 226 moves forward within the mounting recess 228 against the biasing force of the elastic member 229. When the external force acting on the lid operation part 226 disappears, the lid operation part 226 moves rearward within the mounting recess 228 due to the biasing force of the elastic member 229.

[0040] The lid-side engaging part 227 is formed near the lower end of the rear wall surface of the lid operation part 226. The lid-side engaging part 227 is a latch protruding rearward. When the lid part 22 is assembled to the dust collection case 211 and no external force acts on the lid operation part 226, the lid-side engaging part 227 engages with the case-side engaging part 218.

[0041] <Attachment and detachment of the lid part 22> With reference to FIGS. 9, 10, and 11, the assembly of the lid part 22 to the dust collection case 211 and the removal of the lid part 22 from the dust collection case 211 will be described. FIG. 9 is a perspective view of the cleaner 1 with the lid part 22 being attached or detached, and FIG. 10 is a cross-sectional view of the cleaner 1 with the lid part 22 being attached or detached. FIG. 11 is an enlarged cross-sectional view showing the range P surrounded by the two-dot chain line shown in FIG. 10. Note that FIG. 9 shows the case where the dust collection bag 7 is not attached.

[0042] When assembling the lid portion 22 to the dust collection case 211, with the front side tilted downward relative to the rear side, the hinge portion 225 is housed within the case-side engagement portion 218. When the lid portion 22 is rotated in the R3 direction about the hinge portion 225 as the axis of rotation in this state, the rear side of the lid portion 22 moves downward, and the lid-side engagement portion 227 engages with the case-side engagement portion 218. As a result, as shown in FIGS. 1, 3, etc., the lid portion 22 is assembled to the dust collection case 211 that constitutes the main body portion 21. In other words, the lid portion 22 is assembled to the main body portion 21 by rotating about the hinge portion 225, which is a rotation axis extending in the second direction D2 (left-right direction) and disposed on one side (front side) in the first direction D1.

[0043] At this time, the opening edge 224 of the lid portion 22 abuts against the edge of the case opening 216 of the dust collection case 211. That is, the lid portion 22 is assembled to the main body portion 21 such that the opening edge 224 abuts against the main body portion 21. By being assembled to the dust collection case 211 that constitutes the main body portion 21, the lid portion 22 cooperates with the main body portion 21 composed of the housing portion 210 and the dust collection case 211 to define the above-described dust collection chamber 212.

[0044] Also, as described above, a seal member 224a is attached to the opening edge 224. For this reason, leakage of the air flow and dust contained in the air flow from the portion where the lid portion 22 and the dust collection case 211 contact is suppressed.

[0045] When removing the lid portion 22 from the dust collection case 211, first, the lid operation portion 226 is operated forward, and the engagement between the lid-side engagement portion 227 and the case-side engagement portion 218 is released. Thereafter, the lid portion 22 is rotated in the R4 direction about the hinge portion 225 as the axis of rotation. Then, as shown in FIG. 10, with the hinge portion 225 remaining housed within the case-side engagement portion 218, the rear side of the lid portion 22 moves upward. And when the lid portion 22 is moved rearward while the rear side of the lid portion 22 is tilted upward relative to the front side, the hinge portion 225 is pulled out from the case-side engagement portion 218, and the lid portion 22 is removed from the dust collection case 211.

[0046] <Holding portion 6> FIG. 12 is a cross-sectional view of the lid portion 22 taken along the line C-C shown in FIG. 8. The holding portion 6 is formed of a synthetic resin. As shown in FIGS. 6 to 8. The holding portion 6 is provided on the front side (one side in the first direction D1) within the opening 223 of the lid portion 22. That is, the lid portion 22 has the holding portion 6 on one side in the first direction D1. In other words, the holding portion 6 is attached to the housing portion 2. As shown in FIGS. 6 to 8 and FIG. 12, the holding portion 6 is composed of a holding base portion 61, an engaging portion 62, an operating portion 63, a fixing portion 64, and a mounting support portion 65, and removably holds a dust collecting bag 7 described later.

[0047] <The holding base portion 61> The holding base portion 61 has two sides 61a extending in the second direction D2 (left-right direction) and two sides 61b extending in the third direction D3 (up-down direction), and has a plate-like shape in which a plane orthogonal to the first direction D1 is formed. In the following description, the left-right direction in which the side 61a extends may be referred to as the first extension direction DD1, and the up-down direction in which the side 61b extends may be referred to as the second extension direction DD2. One side of the first extension direction DD1 is the right side, and the other side is the left side. Also, one side of the second extension direction is the upper side, and the other side is the lower side.

[0048] An air vent 610, which is an opening centered on the central axis X, is formed in the holding base portion 61. The air vent 610 communicates with the air intake port 213 of the dust collecting case 211 when the lid portion 22 is attached to the dust collecting case 211. When the dust collecting bag 7 is attached to the holding portion 6, the air vent 610 communicates with an air vent 710 of the dust collecting bag 7 described later. Also, a check valve 611 is provided in the air vent 610 to suppress the reverse flow of the air flow from the dust collecting chamber 212 to the air intake port 213 through the air vent 610.

[0049] FIG. 13 is a side view of the holding base 61. A lip portion 612 protruding rearward is formed on the holding base 61. The lip portion 612 is formed of a synthetic resin having elasticity such as rubber. The lip portion 612 is a ring-shaped protruding portion formed along the outer periphery of the ventilation port 610. As shown in FIG. 13, in a region 612a near the lower end of the lip portion 612, the height protruding from the rear surface of the holding base 61 is H1. On the other hand, in a region other than the region 612a of the lip portion 612, the height H2 protruding from the rear surface of the holding base 61 is lower than the height H1 of the region 612a. That is, the region 612a protrudes rearward more than the rest of the lip portion 612.

[0050] Again, referring to FIGS. 6 to 8 and FIG. 12. A seal member 613 such as a packing is provided on the front side of the holding base 61. The seal member 613 has a cylindrical shape having an inner diameter corresponding to the diameter of the ventilation port 610. When the lid portion 22 is assembled to the dust collection case 211, as shown in FIGS. 3 and 4, the seal member 613 and the rear end portion of the nozzle 214 are in contact with each other, and leakage of the air flow and dust contained in the air flow from the boundary portion between the ventilation port 610 and the intake port 213 is suppressed.

[0051] <Engagement portion 62> The engagement portion 62 engages with the dust collection bag 7 when the dust collection bag 7 described later is attached to the holding portion 6. Specifically, the engagement portion 62 engages with the base portion 71 of the dust collection bag 7 (see FIG. 14 etc. described later). The engagement portion 62 has a first engagement portion 621 and a second engagement portion 622.

[0052] The first engagement portion 621 is disposed on the right side of the holding base 61 (one side in the second direction D2, one side in the first extension direction DD1). The first engagement portion 621 is provided so as to be rotatable in the R5 direction or the R6 direction about a first rotation axis 623 extending in the vertical direction (second extension direction DD2) disposed on the right side of the holding base 61. By rotating the first engagement portion 621 as described above, the engagement with and the release of the engagement with the base portion 71 of the dust collection bag 7 can be switched.

[0053] Further, the first engaging portion 621 is biased in the R5 direction by a biasing member (not shown). However, when the dust collection bag 7 is not attached, the rotation of the first engaging portion 621 is restricted by contacting the restricting portion 625. That is, FIGS. 6 to 9 and FIG. 12 show a state in which the rotation of the first engaging portion 621 is restricted by the restricting portion 625.

[0054] The first engaging portion 621 is composed of an engaging extension portion 621a and an engaging hook portion 621b. The engaging extension portion 621a extends in the vertical direction (the third direction D3, the second extension direction DD2) and in a direction intersecting the vertical direction. The direction intersecting the vertical direction is the first direction D1 (front-rear direction) when the rotation of the first engaging portion 621 is restricted as shown in FIG. 7. As shown in FIG. 6, the extension amount of the engaging extension portion 621a in the vertical direction is larger on the rear side.

[0055] The engaging hook portion 621b is provided at the rear end portion of the engaging extension portion 621a. The engaging hook portion 621b is a portion that engages with the right side of the base portion 71 of the dust collection bag 7 when the dust collection bag 7 is attached to the holding portion 6. An inclined surface 621c that approaches the central axis X toward the front is formed on the rear side of the engaging hook portion 621b.

[0056] As shown in FIG. 6, in the vertical direction (the third direction D3, the second extension direction DD2), the engaging hook portion 621b extends in accordance with the rearward extension of the engaging extension portion 621a. For example, the engaging extension portion 621a and the engaging hook portion 621b extend from near the lower end of the ventilation port 610 to near the center of the ventilation port 610 (near the central axis X) in the vertical direction. That is, the first engaging portion 621 is arranged so as to overlap with the ventilation port 610 (that is, the ventilation port 710 of the dust collection bag 7 when the dust collection bag 7 is attached) in the left-right direction (the first extension direction DD1). More specifically, the first engaging portion 621 is arranged (offset) closer to the upper side (the other side of the second extension direction DD2) with respect to the ventilation port 610 (the ventilation port 710 of the dust collection bag 7).

[0057] The second engaging portion 622 is disposed on the left side of the holding base 61 (the other side in the second direction D2, the other side in the first extending direction DD1). The second engaging portion 622 is provided so as to be rotatable in the R7 direction or the R8 direction about a second rotation axis 624 extending in the vertical direction (second extending direction DD2) disposed on the left side of the holding base 61. By the second engaging portion 622 rotating as described above, the engagement with and the release of the engagement with the base portion 71 of the dust collecting bag 7 can be switched.

[0058] In addition, the second engaging portion 622 is biased in the R7 direction by a biasing member (not shown). However, when the dust collecting bag 7 is not attached, the rotation of the second engaging portion 622 is restricted by contacting a restricting portion 626. That is, FIGS. 6 to 9 and FIG. 12 show a state in which the rotation of the second engaging portion 622 is restricted by the restricting portion 626.

[0059] The second engaging portion 622 is composed of an engaging extension portion 622a and an engaging hook portion 622b. The engaging extension portion 622a has the same shape as the engaging extension portion 621a of the first engaging portion 621 described above. The engaging hook portion 622b has the same shape as the engaging hook portion 621b of the first engaging portion 621 described above, and engages with the left side of the base portion 71 of the dust collecting bag 7 when the dust collecting bag 7 is attached to the holding portion 6. An inclined surface 622c that approaches the central axis X toward the front is also formed on the rear side of the engaging hook portion 622b.

[0060] The engaging extension portion 622a and the engaging hook portion 622b also extend in the vertical direction (third direction D3, second extending direction DD2) from the vicinity of the lower end of the ventilation port 610 to the vicinity of the center of the ventilation port 610 (near the central axis X). That is, the second engaging portion 622 is disposed so as to overlap with the ventilation port 610 (that is, the ventilation port 710 of the dust collecting bag 7 when the dust collecting bag 7 is attached) in the left-right direction (first extending direction DD1). More specifically, the second engaging portion 622 is disposed (offset) closer to the upper side (the other side in the second extending direction DD2) with respect to the ventilation port 610 (the ventilation port 710 of the dust collecting bag 7).

[0061] <Operating portion 63> The operation unit 63, when operated by an operator, releases the engagement of the engagement unit 62 with the dust collection bag 7. Specifically, the operation unit 63 includes a first operation unit 631 and a second operation unit 632.

[0062] The first operation unit 631 is composed of an operation extension part 631a and an operation end part 631b provided at the front end of the operation extension part 631a. The operation extension part 631a extends in a direction intersecting the vertical direction (the third direction D3, the second extension direction DD2). As shown in FIG. 7, the direction intersecting the vertical direction is the first direction D1 (front-rear direction) when the rotation of the first engagement part 621 is restricted.

[0063] The first operation unit 631 is integrally formed with the first engagement part 621. That is, the rear end part of the operation extension part 631a is connected to the front end part of the engagement extension part 621a of the first engagement part 621. Therefore, the first operation unit 631 rotates integrally with the first engagement part 621 in the R5 direction or the R6 direction around the first rotation axis 623.

[0064] The second operation unit 632 is formed by an operation extension part 632a and an operation end part 632b provided at the front end of the operation extension part 632a. The operation extension part 632a has the same shape as the operation extension part 631a of the first operation unit 631, and the operation end part 632b has the same shape as the operation end part 631b of the first operation unit 631. The second operation unit 632 is integrally formed with the second engagement part 622. That is, the rear end part of the operation extension part 632a is connected to the front end part of the engagement extension part 622a of the second engagement part 622. Therefore, the second operation unit 632 rotates integrally with the second engagement part 622 in the R7 direction or the R8 direction around the second rotation axis 624.

[0065] In addition, as shown in FIG. 9, when the lid part 22 is to be attached to the dust collection case 211 in a state where the dust collection bag 7 is not attached to the holding part 6, the operation unit 63 abuts against the abutting part 219 formed in the dust collection case 211. In FIG. 9, the abutting part 219 provided on the right side in the dust collection case 211 is shown, but similar abutting parts 219 are also provided on the left side of the dust collection case 211.

[0066] The contact portion 219 is a plate-like member that extends in the front-rear direction (first direction D1) and has sides along the up-down direction (third direction D3, second extension direction DD2). The contact portion 219 contacts the operation end portions 631b and 632b when the rotations of the first engagement portion 621 and the second engagement portion 622 are restricted (that is, when the operation extension portions 631a and 632a extend in the front-rear direction). Thereby, the rotation of the lid portion 22 in the R3 direction with the hinge portion 225 as the rotation axis is hindered, and the assembly of the lid portion 22 and the dust collection case 211 is inhibited. In other words, when the engagement of the first operation portion 631 with the base portion 71 of the first engagement portion 621 is released, the first operation portion 631 functions as a first inhibiting portion that inhibits the assembly of the lid portion 22 and the main body portion 21. Also, when the engagement of the second operation portion 632 with the base portion 71 of the second engagement portion 622 is released, the second operation portion 632 functions as a second inhibiting portion that inhibits the assembly of the lid portion 22 and the main body portion 21.

[0067] <Fixing portion 64> The fixing portion 64 is a rectangular member that extends along the left-right direction (first extension direction DD1) and is disposed at an end portion on the upper side (one side in the second extension direction DD2) of the holding base portion 61. Therefore, it can be said that the fixing portion 64 is disposed above the ventilation port 610 and the ventilation port 710 so as to overlap with the ventilation port 610 (when the dust collection bag 7 is attached, the ventilation port 710 of the dust collection bag 7) in the up-down direction (second extension direction DD2).

[0068] A groove-shaped engagement recess 640 is formed on the lower surface of the fixing portion 64. When the dust collection bag 7 is attached to the holding portion 6, a part of the upper end of the base portion 71 of the dust collection bag 7 is received in the engagement recess 640. Thereby, the fixing portion 64 and the base portion 71 of the dust collection bag 7 are engaged. In other words, the fixing portion 64 is disposed on one side in the second extension direction DD2 of the ventilation port 710 so as to overlap with the ventilation port 710 in the second extension direction DD2, and functions as a third engagement portion that engages with the base portion 71.

[0069] <Mounting support portion 65> The attachment support portion 65 is provided at the lower end of the holding base portion 61. A rectangular support surface 650 having a long side along the left-right direction is formed on the attachment support portion 65. The short side of the support surface 650 protrudes rearward from the holding base portion 61. For this reason, when the lid portion 22 is assembled to the dust collection case 211 with the dust collection bag 7 attached to the holding portion 6, the support surface 650 is positioned below the base portion 71 of the dust collection bag 7.

[0070] <Dust collection bag 7> The dust collection bag 7 is detachable from the holding portion 6 described later.

[0071] FIG. 14 is a cross-sectional view of the lid portion 22, the holding portion 6, and the dust collection bag 7 in a state where the dust collection bag 7 is being attached to the holding portion 6. FIG. 15 is a side view of the lid portion 22, the holding portion 6, and the dust collection bag 7 in a state where the dust collection bag 7 is attached to the holding portion 6 (mounted state). FIG. 16 is a cross-sectional view taken along line E-E shown in FIG. 15.

[0072] The dust collection bag 7 is formed by a base portion 71 and a bag portion 72. The base portion 71 is formed in a plate shape having two first sides 71a extending along the left-right direction (second direction D2, first extension direction DD1) and two second sides 71b extending along the up-down direction (third direction D3, second extension direction DD2). A protruding portion 711 protruding upward is formed on the upper first side 71a of the two first sides 71a. A protruding portion 712 protruding downward is formed on the lower first side 71a of the two first sides 71a.

[0073] A ventilation port 710, which is an opening centered on the central axis X, is formed in the base portion 71. The diameter of the ventilation port 710 is substantially equal to the outer diameter of the lip portion 612 formed on the holding base portion 61 of the holding portion 6. The ventilation port 710 is an entrance for dust when the dust that has flowed in with the air flow from the nozzle 214 passes through and reaches the bag portion 72. The bag portion 72 is connected to the base portion 71 and is formed of a breathable material such as a non-woven fabric. The bag portion 72 is a bag-shaped member that captures the dust that has flowed in with the air flow from the nozzle 214 and allows the air flow to pass through. That is, the dust collection bag 7 can collect dust inside.

[0074] <Detachment and Attachment of Dust Collection Bag 7> In addition to FIGS. 14 to 16, refer to FIG. 17 to describe the attachment of the dust collection bag 7 to the holding portion 6. FIG. 17 is a plan view of the lid portion 22, the holding portion 6, and the dust collection bag 7 when the dust collection bag 7 is in the attached state. Also, refer to FIG. 18 to describe the removal of the dust collection bag 7 from the holding portion 6. FIG. 18 is a plan view of the lid portion 22, the holding portion 6, and the dust collection bag 7 when the operation of removing the dust collection bag 7 is performed.

[0075] <Attachment of Dust Collection Bag 7> When attaching the dust collection bag 7 to the holding portion 6 inside the lid portion 22 in the state shown in FIGS. 6 to 8 and FIG. 12, first, a part of the dust collection bag 7 passes inside the opening edge 224 of the lid portion 22 and is accommodated in the opening portion 223. In other words, the opening edge 224 of the lid portion 22 is formed to have a size through which the dust collection bag 7 can pass. The protrusion 711 formed on the base portion 71 of the dust collection bag 7 accommodated in the opening portion 223 is inserted into the engagement recess 640 formed in the holding portion 6 fixing portion 64.

[0076] While the protrusion 711 is inserted into the engagement recess 640, when a forward force acts on the lower end portion of the base portion 71, the dust collection bag 7 rotates in the R9 direction shown in FIG. 14 about the protrusion 711 as an axis. Due to the rotation of the dust collection bag 7 in the R9 direction, the second side 71b on the right side of the base portion 71 abuts against the inclined surface 621c of the first engagement portion 621, and the second side 71b on the left side abuts against the inclined surface 622c of the second engagement portion 622.

[0077] When the dust collection bag 7 further rotates in the R9 direction, the second side 71b slides on the inclined surfaces 621c and 622c. As described above, the inclined surfaces 621c and 622c approach the central axis X toward the front side. Therefore, when the dust collection bag 7 rotates in the R9 direction, due to the force received by the inclined surfaces 621c and 622c from the base portion 71, the first engagement portion 621 rotates in the R6 direction about the first rotation axis 623 against the biasing force. Similarly, the second engagement portion 622 rotates in the R8 direction about the second rotation axis 624 against the biasing force.

[0078] When the base portion 71 reaches in front of the inclined surfaces 621c and 622c, the first engaging portion 621 rotates in the R5 direction about the first rotation axis 623 by the biasing force, and the second engaging portion 622 rotates in the R7 direction about the second rotation axis 624 by the biasing force. As a result, as shown in FIG. 17, an engaging surface 621d, which is the front surface of the engaging hook portion 621b formed on the first engaging portion 621, and an engaging surface 622d, which is the front surface of the engaging hook portion 622b formed on the second engaging portion 622, come into contact with the rear surface of the base portion 71. That is, the dust collecting bag 7 is attached to the holding portion 6. At this time, the holding portion 6 holds the base portion 71 of the dust collecting bag 7, but does not hold the bag portion 72.

[0079] When the dust collecting bag 7 is attached, the front surface of the base portion 71 and the rear surface of the holding base 61 come into contact with each other. At this time, the lip portion 612 of the holding portion 6 is located inside the vent hole 710 of the base portion 71, and the edge of the vent hole 710 and the lip portion 612 come into contact with each other. As described above, since the lip portion 612 has elasticity, the contact portion between the vent hole 710 and the lip portion 612 is in close contact.

[0080] As shown in FIG. 17, when the dust collecting bag 7 is held by the holding portion 6, the first engaging portion 621 and the first operating portion 631 are in a state of rotating in the R6 direction as compared with the case where the dust collecting bag 7 shown in FIG. 7 is not held. That is, when the dust collecting bag 7 is attached, the first operating portion (first inhibiting portion) 631 is disposed on the side closer to the central axis X than the first engaging portion 621 (that is, inside the lid portion 22).

[0081] Similarly, when the dust collecting bag 7 is attached to the holding portion 6, the second engaging portion 622 and the second operating portion 632 are also in a state of rotating in the R8 direction as compared with the case where the dust collecting bag 7 is not attached. That is, when the dust collecting bag 7 is attached, the second operating portion (second inhibiting portion) 632 is disposed on the side closer to the central axis X than the second engaging portion 622 (that is, inside the lid portion 22).

[0082] As shown in FIGS. 15 and 16, when the dust collection bag 7 is attached to the holding portion 6, the protruding portion 712 of the base portion 71 reaches a position overlapping with the support surface 650 of the attachment support portion 65 in the vertical direction. In this state where the dust collection bag 7 is attached to the holding portion 6, the lid portion 22 is assembled to the dust collection case 211 by the method described above.

[0083] At this time, as described above, the operation portion 63 is disposed inside the engaging portion 62. That is, the front end of the operation portion 63 approaches the central axis X side. For this reason, when assembling the lid portion 22 to the dust collection case 211 with the dust collection bag 7 attached to the holding portion 6, the operation portion 63 does not contact the contact portion 219 provided in the dust collection case 211. That is, the lid portion 22 can be assembled to the dust collection case 211 without being hindered by the operation portion 63. As a result, the opening edge 224 of the lid portion 22 contacts the main body portion 21, and the cleaner 1 is in the state shown in the cross-sectional view of FIG. 3.

[0084] That is, with the dust collection bag 7 attached to the holding portion 6 provided on one side (front side) in the first direction D1, the lid portion 22 is disposed on one side (front side) in the first direction D1 of the lid portion 22 and rotates about the center of the hinge portion 225 extending in the second direction D2 (left-right direction) to be assembled to the main body portion 21. Thereby, the lid portion 22 is assembled to the main body portion 21 so as to be adjacent above the dust collection case 211 of the main body portion 21 (that is, in the second extension direction DD2). As a result, the dust collection bag 7 is accommodated in the dust collection chamber 212 defined by the cooperation of the lid portion 22 and the main body portion 21.

[0085] Also, when assembling the lid portion 22 to the dust collection case 211, the operation portion 63 does not contact the contact portion 219 as described above. As a result, the operation portion 63 is accommodated in the dust collection chamber 212 in the state where the lid portion 22 is assembled to the main body portion 21.

[0086] In addition, since the lid portion 22 is rotated in the R3 direction in FIG. 10 and assembled to the dust collection case 211, the front end portion of the seal member 613 of the holding portion 6 abuts against the rear end portion of the nozzle 214 by being pressed against it. For this reason, the seal member 613 and the nozzle 214 are in close contact, and leakage of the air flow and the dust contained in the air flow is suppressed.

[0087] When the cleaner 1 with the lid portion 22 to which the dust collection bag 7 is attached is operated, as shown in FIG. 3, the rear end portion of the bag portion 72 of the dust collection bag 7 abuts against the front wall surface 401a formed on the cylindrical portion 401 of the pack support portion 40 by the air flow flowing in from the intake port 213. The dust collection bag 7 tries to move backward by the air flow flowing into the inside from the intake port 213, but the front wall surface (abutment surface) 401a of the pack support portion (abutment portion) 40 abuts against the rear end portion of the bag portion 72, restricting the movement. For this reason, deformation of the base portion 71 of the dust collection bag 7 is suppressed, and a gap is prevented from being generated between the base portion 71 and the holding base portion 61.

[0088] In addition, the front wall surface 401a is located in front of the opening wall surface 216a at the rear end portion of the case opening 216. In other words, the front wall surface 401a is located on the side of the holding base portion 61 rather than the end portion of the opening edge 224 in the direction in which the bag portion 72 separates from the holding base portion 61. And the rear end portion of the bag portion 72 that abuts against the front wall surface 401a is also located in front of the opening wall surface 216a as well. For this reason, when the lid portion 22 is removed and the bag portion 72 is taken out from the case opening 216, it is suppressed that the rear end portion of the bag portion 72 contacts the opening wall surface 216a and the workability is impaired.

[0089] In addition, as described above, when the dust collection bag 7 is attached, the edge of the ventilation port 710 of the base portion 71 and the lip portion 612 of the holding portion 6 are in close contact. For this reason, leakage of the air flow and the dust contained in the air flow from the ventilation port 710 is suppressed.

[0090] However, as shown in FIG. 16, when the dust collection bag 7 is attached to the holding portion 6, the first side 71a on the upper side of the base portion 71 is held by the fixing portion 64, and the left and right second sides 71b of the base portion 71 are held by the engaging portion 62. However, the first side 71a below the base portion 71 is not directly held by the holding portion 6. Therefore, when the cleaner 1 is operated and an air flow flows in from the air inlet 213, the vicinity of the first side 71a below the base portion 71, that is, the vicinity below the ventilation port 710, may be deformed rearward more than other portions of the base portion 71, and a gap may be generated between the base portion 71 and the holding base 61.

[0091] However, as shown in FIG. 13, the height H1 at which the region 612a below the lip portion 612 protrudes from the holding base 61 is higher than other regions of the lip portion 612. Therefore, even when the base portion 71 in the vicinity below the ventilation port 710 is deformed rearward, the vicinity below the ventilation port 710 and the region 612a of the lip portion 612 can be maintained in a closely attached state. For this reason, leakage of the air flow and dust contained in the air flow from the ventilation port 710 is suppressed.

[0092] <Removal of the dust collection bag 7> When removing the dust collection bag 7, first, as described above, the lid operation portion 226 is slid forward, and after the lid portion 22 is rotated in the R4 direction about the hinge portion 225 as the rotation axis, it is pulled backward, so that the lid portion 22 is removed from the dust collection case 211. The removed lid portion 22 is moved to the upper part of, for example, a trash can or the like. Thereafter, with the opening 223 of the lid portion 22 facing downward, the operator operates the operation portion 63. Specifically, an operation is performed such that a force is applied to the operation end portion 631b of the first operation portion 631 and the operation end portion 632b of the second operation portion 632 toward the central axis X side. In other words, as shown in FIG. 18, the first operation portion (first inhibiting portion) 631 and the second operation portion (second inhibiting portion) 632 are moved in a direction approaching each other from the state shown in FIG. 17. For this reason, the first operation portion 631 rotates in the R6 direction, and the second operation portion 632 rotates in the R8 direction.

[0093] The engaging portion 62 is connected to the operating portion 63. Therefore, when the first operating portion 631 rotates in the R6 direction, the first engaging portion 621 rotates in the R6 direction about the first rotation axis 623. Also, when the second operating portion 632 rotates in the R8 direction, the second engaging portion 622 rotates in the R8 direction about the second rotation axis 624. As a result, as shown in FIG. 18, the engagement between the engaging hook portion 621b of the first engaging portion 621 and the engaging hook portion 622b of the second engaging portion 622 and the base portion 71 of the dust collecting bag 7 is released. When the engagement between the engaging portion 62 and the base portion 71 is released, the dust collecting bag 7 falls into the interior of a lower dustbin or the like by gravity. That is, the operator can discard the dust collecting bag 7 without directly touching the dust collecting bag 7.

[0094] According to the first embodiment described above, at least one of the following operational effects can be obtained.

[0095] (1) The cleaner 1 is attached to the housing portion 2 and includes a holding portion 6 that detachably holds the dust collecting bag 7. The holding portion 6 has a first engaging portion 621, a second engaging portion 622, and a fixing portion 64 that is a third engaging portion. The first engaging portion 621 is disposed on one side (right side) of the ventilation port 710 in the first extension direction DD1 so as to overlap the ventilation port 710 of the dust collecting bag 7 in the first extension direction DD1. The first engaging portion 621 can switch the engagement with and release from the base portion 71 of the dust collecting bag 7 by rotating about the first rotation axis 623. The second engaging portion 622 is disposed on the other side (left side) of the ventilation port 710 in the first extension direction DD1 so as to overlap the ventilation port 710 in the first extension direction DD1. The second engaging portion 622 can switch the engagement with and release from the base portion 71 by rotating about the second rotation axis 624. The fixing portion 64 is disposed on one side (upper side) of the ventilation port 710 in the second extension direction DD2 so as to overlap the ventilation port 710 in the second extension direction DD2 and engages with the base portion 71.

[0096] As a result, the holding part 6 can hold the base 71 of the dust collection bag 7 at three points on the right side, left side, and upper side, so that the base 71 of the dust collection bag 7 attached to the holding part 6 is suppressed from curving. That is, a gap is suppressed from occurring between the base 71 and the holding base 61, a decrease in sealing performance is suppressed, and air flow and dust are suppressed from leaking from between the base 71 and the holding base 61.

[0097] (2) The cleaner 1 further includes a first operation part 631 which is a first inhibiting part and a second operation part 632 which is a second inhibiting part. When the engagement of the first engaging part 621 with the base 71 is released, the first operation part (first inhibiting part) 631 inhibits the assembly of the lid part 22 and the dust collection case 211 of the main body part 21. When the engagement of the second engaging part 622 with the base 71 is released, the second operation part (second inhibiting part) 632 inhibits the assembly of the lid part 22 and the dust collection case 211 of the main body part 21. As a result, in a state where the dust collection bag 7 is not attached, the lid part 22 cannot be assembled to the dust collection case 211, so that the cleaner 1 is suppressed from operating in a state where the dust collection bag 7 is not attached. In addition, since a plurality of inhibiting parts are provided, it is suppressed that the lid part 22 is erroneously assembled to the dust collection case 211 in a state different from the proper state.

[0098] (3) The first engaging part 621 and the first operation part (first inhibiting part) 631 rotate integrally, and the second engaging part 622 and the second operation part (second inhibiting part) 632 rotate integrally. As a result, by using integrally formed members, the number of parts can be reduced.

[0099] (4) The first rotation shaft 623 and the second rotation shaft 624 extend along the second extension direction DD2, and when the first operation part (first inhibiting part) 631 and the second operation part (second inhibiting part) 632 move in a direction approaching each other, the engagement of the first engaging part 621 and the second engaging part 622 with the base 71 is released. As a result, the dust collection bag 7 can be removed without touching the dust collection bag 7 with a simple operation, so that the operability when disposing of the dust collection bag 7 is improved.

[0100] (5) When the dust collection bag 7 is attached to the holding part 6, the first operation part (first inhibiting part) 631 and the second operation part (second inhibiting part) 632 are arranged inside the first engaging part 621 and the second engaging part 622 in the first extension direction DD1. As a result, at the front tip part of the housing part 2, the width along the second direction D2 (first extension direction DD1) can be narrowed, so that the cleaner 1 can be miniaturized.

[0101] (6) The first engaging part 621 and the second engaging part 622 are arranged (offset) closer to the other side (lower side) in the second extension direction DD2 with respect to the ventilation port 710. As a result, the central part of the base part 71, that is, the vicinity of the ventilation port 710, is less likely to deform, a gap is generated between the vicinity of the ventilation port 710 in the base part 71 and the holding base part 61, a decrease in the sealing property is suppressed, and air flow and dust are suppressed from leaking out from between the base part 71 and the holding base part 61. Further, when inserting the protruding part 711 of the base part 71 into the fixing part 64 when attaching the dust collection bag 7, or when rotating the dust collection bag 7 in the R9 direction with the protruding part 711 as a fulcrum, the upper sides of the left and right second sides 71b of the base part 71 are prevented from hitting the engaging part 62, and deformation of the base part 71 is suppressed. As a result, a decrease in the sealing property between the base part 71 and the holding base part 61 is suppressed, and air flow and dust are suppressed from leaking out from between the base part 71 and the holding base part 61.

[0102] (7) The cleaner 1 includes a lid part 22, and the holding part 6 is attached to the lid part 22. The lid part 22, when attached to the main body part 21, defines a dust collection chamber 212 for accommodating the dust collection bag 7 in cooperation with the main body part 21. As a result, when discarding the dust collection bag 7 held in a state where a decrease in the sealing property between the base part 71 and the holding base part 61 is suppressed, only the lid part 22 needs to be carried above a trash can or the like, and there is no need to carry the entire cleaner 1. As a result, the operation when discarding the dust collection bag 7 becomes easy, and the workability is improved.

[0103] <Modification Example> A cleaner which is a working machine of a modified example will be described. Hereinafter, the same reference numerals are given to the same or substantially the same configurations as those of the cleaner 1 of the first embodiment, and the points different from the first embodiment will be mainly described. Regarding the points not particularly described, they are the same as those of the first embodiment. The holding part of the cleaner of the modified example has a different position for holding the base part of the dust collecting bag from that in the case of the first embodiment.

[0104] FIG. 19 is a perspective view of the lid part 22 of the modified example as seen from below. FIG. 20 is a side view of the lid part 22 of the modified example. FIG. 21 is a cross-sectional view taken along the line F-F shown in FIG. 20. In FIGS. 19 to 21, the case where the dust collecting bag 7 is attached to the holding part 6 of the lid part 22 is shown.

[0105] In the modified example, the holding part 6 has an engaging part 73 having a different shape from the engaging part 62 of the first embodiment. The engaging part 73 is integrally formed with an operating part 63 having the same shape as that of the first embodiment. The engaging part 73 has a first engaging part 731 and a second engaging part 732.

[0106] The first engaging part 731 is disposed on the right side of the holding base 61 (one side in the second direction D2, one side in the first extending direction DD1). The first engaging part 731 is provided so as to be rotatable in the R5 direction or the R6 direction about the first rotation axis 623 shown in FIG. 7 in the same manner as in the case of the first embodiment. The first engaging part 731 has an engaging extension part having the same shape as the engaging extension part 621a of the first embodiment and connected to the first operating part 631 (see FIG. 7 etc.) of the operating part 63 at the front end part, and an engaging hook part 731b.

[0107] The engaging hook portion 731b has a first hook portion region 733a and a second hook portion region 733b. The first hook portion region 733a extends along the third direction D3 (the second extension direction DD2) from the upper end to the lower end of the second side 71b on the right side of the base portion 71. That is, the first hook portion region 733a of the first engaging portion 731 is arranged so as to overlap the ventilation opening 610 and the ventilation opening 710 of the dust collecting bag 7 in the left-right direction (the first extension direction DD1). The second hook portion region 733b is connected to the lower end portion of the first hook portion region 733a and extends from the right end to the left side along the second direction D2 (the first extension direction DD1) of the first side 71a of the base portion 71.

[0108] The second engaging portion 732 is arranged on the left side of the holding base portion 61 (the other side in the second direction D2, the other side in the first extension direction DD1). The second engaging portion 732 is provided so as to be rotatable in the R5 direction or the R6 direction about the second rotation axis 624 shown in FIG. 7, as in the case of the first embodiment. The second engaging portion 732 has an engaging extension portion 732a and an engaging hook portion 732b. The engaging extension portion 732a has the same shape as the engaging extension portion 622a of the first embodiment and is connected to the second operation portion 632 of the operation portion 63 at the front end portion.

[0109] The engaging hook portion 732b has a first hook portion region 734a and a second hook portion region 734b. The first hook portion region 734a extends along the third direction D3 (the second extension direction DD2) from the upper end to the lower end of the second side 71b on the left side of the base portion 71. That is, the first hook portion region 734a of the second engaging portion 732 is arranged so as to overlap the ventilation opening 610 and the ventilation opening 710 of the dust collecting bag 7 in the left-right direction (the first extension direction DD1).

[0110] The second hook portion region 734b is connected to the lower end portion of the first hook portion region 734a and extends from the left end to the right side along the second direction D2 (the first extension direction DD1) of the first side 71a of the base portion 71. As shown in FIGS. 19 to 21, the shapes of the second hook portion regions 733b and 734b are formed so as to have a gap between the left end portion of the second hook portion region 733b and the right end portion of the second hook portion region 734b. However, this gap is not limited to the size shown in the figure and may be wider or narrower than the case shown in the figure.

[0111] Since the engaging hook portion 731b has the above-described shape, the first engaging portion 731 can hold the second side 71b on the right side of the base portion 71 and a part (right side) of the protruding portion 712 formed on the first side 71a on the lower side. Similarly, since the engaging hook portion 732b has the above-described shape, the second engaging portion 732 can hold the second side 71b on the left side of the base portion 71 and a part (left side) of the protruding portion 712 formed on the first side 71a on the lower side. That is, in the modified example, the second sides 71b on the left and right sides of the base portion 71 and a part of the first side 71a on the lower side are held by the first engaging portion 731 and the second engaging portion 732, and the first side 71a on the upper side of the base portion 71 is held by the fixing portion 64. Thereby, it becomes possible to improve the holding force of the base portion 71 by the holding portion 6.

[0112] In addition, also in the modified example, the same operational effects as the operational effects (1) to (5) and (7) obtained by the first embodiment can be obtained.

[0113] <Second Embodiment> The working machine of the second embodiment will be described. Hereinafter, the same components as those of the cleaner which is the working machine of the first embodiment are given the same reference numerals, and the points different from the first embodiment will be mainly described. Regarding the points not particularly described, they are the same as those of the first embodiment. In the second embodiment, the position of the base portion of the dust collecting bag held by the holding portion is different from that of the first embodiment. This will be described in detail below.

[0114] Figs. 22 and 23 are cross-sectional views of the cleaner 1 of the second embodiment. Note that Fig. 22 is a cross-section of the cleaner 1 along the line A-A shown in Fig. 2 used in the description of the first embodiment, and Fig. 23 is a cross-section along the line G-G shown in Fig. 22. Fig. 24 is a perspective view of the lid portion 22 of the second embodiment as viewed from below. Fig. 25 is a plan view of the lid portion 22 of the second embodiment. Fig. 26 is a side view of the lid portion 22 of the second embodiment. Fig. 27 is a cross-sectional view of the lid portion 22 along the line H-H in Fig. 26. The holding portion 6 attached to the lid portion 22 of the cleaner 1 in the same manner as in the first embodiment has an engaging portion 74 different from the engaging portion 62 of the first embodiment and an operating portion 75 different from the operating portion 63 of the first embodiment.

[0115] <Engaging portion 74> As shown in the figure, the engaging portion 74 of the holding portion 6 is disposed on the lower side of the holding base portion 61 (the other side in the third direction D3, the other side in the second extension direction DD2). That is, the holding portion 6 of the second embodiment does not have the mounting support portion 65 of the first embodiment and the modified example, and the engaging portion 74 is disposed at the position where the mounting support portion 65 was provided in the first embodiment and the modified example.

[0116] As shown in Fig. 26, the engaging portion 74 is rotatably disposed in the R10 direction or the R11 direction about a third rotation axis 743 extending in the left-right direction (the second direction D2, the first extension direction DD1) provided near the lower end portion of the holding base portion 61. By the rotation of the engaging portion 74 as described above, the engagement with and the release of the engagement with the base portion 71 of the dust collecting bag 7 are switched.

[0117] The engaging portion 74 is composed of a rotating base portion 741 and an engaging hook portion 742. The rotating base portion 741 is provided at the lower end portion of the holding base portion 61, and the third rotation axis 743 is disposed therein. Further, a protrusion portion 745 protruding radially outward of the third rotation axis 743 is formed near the front end portion below the rotating base portion 741.

[0118] The engaging hook portion 742 protrudes rearward from the rear side of the rotating base portion 741 and extends in the left-right direction as shown in FIGS. 24 and 25. As shown in FIG. 26, an inclined surface 742a that approaches the third rotation axis 743 upward is formed at the rear end portion of the engaging hook portion 742. An engaging surface 742b is formed on the front end surface of the inclined surface 742a.

[0119] In addition, the engaging portion 74 is biased in the R10 direction by a biasing member (not shown). However, when the dust collection bag 7 is not attached, the engaging portion 74 is restricted from rotating by the abutment of the right front end portion 742c of the engaging hook portion 742 and a restricting portion 744 provided on the right side of the rotating base portion 741. That is, FIGS. 24 to 27 show a state in which the rotation of the engaging portion 74 is restricted by the restricting portion 744.

[0120] <Operation portion 75> The operation portion 75 is composed of an operation extension portion 751 and an operation end portion 752 provided near the left end portion of the operation extension portion 751. The operation extension portion 751 extends along the left-right direction. The operation portion 75 is integrally formed with the engaging portion 74. That is, the right end portion of the operation extension portion 751 is connected to the left end portion of the rotating base portion 741. Therefore, the operation portion 75 can rotate integrally with the engaging portion 74 in the R10 direction or the R11 direction about the third rotation axis 743.

[0121] <Holding base 61> FIG. 28 is a side view of the holding base 61 of the second embodiment. The holding base 61 of the second embodiment is provided with a lip portion 753 having a shape different from that of the lip portion 612 of the holding base 61 of the first embodiment. However, the lip portion 753 is formed of a synthetic resin having elasticity such as rubber, as in the case of the first embodiment.

[0122] As shown in FIG. 28, in regions 753a near the lower end of the lip portion 753 and region 753b near the upper end, the height protruding from the rear surface of the holding base 61 is H3. In contrast, on the right side of the lip portion 753, the height of the region 753c close to the central axis X protruding from the rear surface of the holding base 61 is H4. Similarly, on the left side of the lip portion 753, the height of the region close to the central axis X protruding from the rear surface of the holding base 61 is H4. This height H4 is higher than the height H3 of regions 753a and 753b. That is, on the right and left sides of the lip portion 753, the region 753c close to the central axis X in the vertical direction protrudes more rearward than regions 753a and 753b.

[0123] <Attachment and detachment of the dust collection bag 7> FIG. 29 is a cross-sectional view of the lid portion 22, the holding portion 6, and the dust collection bag 7 in a state where the dust collection bag 7 is being attached to the holding portion 6. When attaching the dust collection bag 7 to the holding portion 6 inside the lid portion 22 in the state shown in FIGS. 24 to 27, first, the protruding portion 711 of the base portion 71 of the dust collection bag 7 is inserted into the engaging concave portion 640 formed in the fixing portion 64 of the holding portion 6, and the state shown in FIG. 29 is obtained.

[0124] While the protruding portion 711 is inserted into the engaging concave portion 640, when a forward force acts on the lower end portion of the base portion 71, the dust collection bag 7 rotates in the R9 direction about the protruding portion 711. Note that the R9 direction is the same direction as the R9 direction shown in FIG. 14 described in the first embodiment.

[0125] Due to the rotation of the dust collection bag 7 in the R9 direction, the protruding portion 712 of the first side 71a on the lower side of the base portion 71 comes into contact with the inclined surface 742a of the engaging portion 74. As the dust collection bag 7 rotates, the first side 71a slides on the inclined surface 742a. As described above, the inclined surface 742a approaches the third rotation axis 743 more toward the upper side. Therefore, when the dust collection bag 7 rotates in the R9 direction, due to the force received by the inclined surface 742a from the base portion 71, the engaging portion 74 rotates in the R11 direction about the third rotation axis 743 against the biasing force.

[0126] When the protrusion 712 of the base 71 reaches in front of the inclined surface 742a, the engaging portion 74 rotates in the R10 direction about the third rotation axis 743 by the biasing force. As a result, the engaging surface 742b of the engaging hook portion 74 comes into contact with the rear surface of the base 71. That is, the dust collection bag 7 is attached to the holding portion 6.

[0127] In addition, when the dust collection bag 7 is attached to the holding portion 6, the first side 71a above the base 71 is held by the fixing portion 64, and the lower first side 71a is held by the engaging portion 74. However, the two second sides 71b on the left and right of the base 71 are not directly held by the holding portion 6. For this reason, when the cleaner 1 is operated and an air flow flows in from the air inlet 213, among the two second sides 71b on the left and right of the base 71, at a location close to the central axis X, that is, in the vicinity of the left and right ends of the ventilation port 710, it may deform rearward more than other locations of the base 71, and a gap may be generated.

[0128] However, as shown in FIG. 28, the height H4 at which the region 753c of the lip portion 753 protrudes from the holding base 61 is higher than the lower region 753a and the upper region 753b of the lip portion 753. Therefore, even when the base 71 near the left and right ends of the ventilation port 710 deforms rearward, the state where the ventilation port 710 and the lip portion 753 are in contact can be maintained. For this reason, leakage of the air flow and dust from the ventilation port 710 is suppressed.

[0129] In addition, when the dust collection bag 7 is attached to the holding portion 6 and the base 71 is engaged with the engaging portion 74, the engaging portion 74 is in a state of rotating in the R11 direction more than the state shown in FIGS. 24 to 27. For this reason, the protrusion 745 formed on the rotating base 741 is closer to the central axis X (inside) in the vertical direction than the state shown in FIGS. 24 to 27. For this reason, when the lid portion 22 is assembled to the dust collection case 211, the protrusion 745 does not come into contact with the inner wall surface of the dust collection case 211.

[0130] On the other hand, when the dust collection bag 7 is not attached to the holding part 6, when the lid part 22 is assembled to the dust collection case 211, the protruding part 745 in the state shown in FIGS. 24 to 27 abuts against the inner wall surface of the dust collection case 211. For this reason, the dust collection case 211 and the opening edge 224 of the lid part 22 do not abut. That is, the assembly of the dust collection case 211 and the lid part 22 is inhibited by the protruding part 745. In other words, the protruding part 745 functions as an inhibiting part.

[0131] When removing the dust collection bag 7, in the same manner as in the case of the first embodiment, the lid part 22 is removed from the dust collection case 211, and in a state where the opening part 223 faces downward, it is moved to the upper part of, for example, a dustbin. After that, the operation part 75 is operated by an operator in a state where the opening part 223 of the lid part 22 faces downward.

[0132] Specifically, an operation in the R11 direction is performed on the operation end part 752 of the operation part 75. Note that instead of the operation part 75 being operated in the R11 direction, an operation in the R11 direction may be performed on the engaging hook part 742 of the engaging part 74. Further, an operation in the R11 direction may be performed on the protruding part 745. In this case, the protruding part 745 also functions as an operation part.

[0133] In response to the above operation, the operation part 75 rotates in the R11 direction, and the engaging part 74 connected to the operation part 75 also rotates in the R11 direction. As a result, the contact between the engaging surface 742b of the engaging part 74 and the rear surface of the base part 71 is released, and the engagement between the engaging part 74 and the base part 71 of the dust collection bag 7 is released. When the engagement between the engaging part 74 and the base part 71 is released, the dust collection bag 7 falls into the interior of a lower dustbin or the like by gravity. That is, also in the second embodiment, the operator can discard the dust collection bag 7 without directly touching the dust collection bag 7.

[0134] By having the above configuration, also in the second embodiment, the dust collection bag 7 can be discarded without touching the dust collection bag 7, and the operability when discarding the dust collection bag 7 is improved. Further, by forming the protruding portion 745 which is an inhibiting portion, the lid portion 22 cannot be assembled to the dust collection case 211 in a state where the dust collection bag 7 is not attached, so that the cleaner 1 is suppressed from operating in a state where the dust collection bag 7 is not attached.

[0135] <Third Embodiment> The working machine of the third embodiment will be described. Hereinafter, the same components as those of the cleaner which is the working machine of the first embodiment are given the same reference numerals, and the points different from the first embodiment will be mainly described. For points not particularly described, they are the same as those of the first embodiment. The cleaner of the third embodiment is configured such that a dust collection bag and a filter unit can be selectively attached in a dust collection chamber.

[0136] FIG. 30 is a cross-sectional view of the cleaner 1 taken along line A-A shown in FIG. 2, and shows a case where the filter unit 80 is attached instead of the dust collection bag 7. FIG. 31 is a perspective view of the cleaner 1 when the filter unit 80 is attached. As shown in FIG. 30, the filter unit 80 is attached to the cleaner 1 in a state where the holding portion 6 is removed from the lid portion 22.

[0137] The filter unit 80 has a first filter unit 81 and a second filter unit 82, and is detachably attached to the housing portion 210 of the main body portion 21. The filter unit 80 attached to the housing portion 210 is disposed in the dust collection chamber 212 defined between the housing portion 210, the dust collection case 211, and the lid portion 22. The filter unit 80 captures dust contained in the air sucked by the cleaner 1. The dust captured by the filter unit 80 is stored in the dust collection chamber 212. The dust accumulated in the dust collection chamber 212 can be discarded by removing the dust collection case 211 from the housing portion 210. Further, the filter unit 80 can be removed from the housing portion 210 and cleaned or replaced.

[0138] <First Filter Unit 81> The first filter unit 81 is detachable from the inlet 18 after the pack support unit 40 is removed. The first filter unit 81 includes a first frame body 810 having a cylindrical shape centered on the central axis X, and a filter medium 811 attached to the first frame body 810.

[0139] The first frame body 810 is formed of a synthetic resin. Engagement recesses 812, which are latch portions provided in respective ones of a pair of recesses, are formed on the side wall surface of the first frame body 810. Each of the engagement recesses 812 is disposed at a position 180 degrees different from each other in the circumferential direction of the side wall surface of the first frame body 810. For example, as shown in FIG. 31, the engagement recesses 812 are disposed on the right side and the left side with respect to the central axis X. The first filter unit 81 is attached to the inlet 18 by the engagement of these two engagement recesses 812 and a pair of engagement protrusions 180 provided on the inner wall surface of the inlet 18, respectively. The filter medium 811 is held by the first frame body 810 in front of the inlet 18. The filter medium 811 is formed of a material having air permeability, such as a porous synthetic resin such as a sponge.

[0140] <The second filter unit 82> The second filter unit 82 is disposed forward of the first filter unit 81 and is detachable from the housing unit 210. The second filter unit 82 includes a filter main body 821 and an annular frame 822. The filter main body 821 has a cylindrical shape with one end open. The filter main body 821 is formed of, for example, a nonwoven fabric. The annular frame 822 is provided around the opening of the filter main body 821. The annular frame 822 is formed of a synthetic resin. A pair of filter-side engagement portions 823 that protrude radially outward are integrally formed on the annular frame 822.

[0141] Further, as shown in FIG. 30, a support frame 83 protruding forward from the periphery is formed on the annular frame 822. The support frame 83 is formed in a cage shape by a plurality of elongated plate members, and gaps are provided between adjacent plate members. The support frame 83 supports the filter body 821 from the inside and maintains the shape of the filter body 821.

[0142] As described above, the filter section 80 composed of the first filter section 81 and the second filter section 82 is disposed in a dust collection chamber 212 defined by a housing section 210, a dust collection case 211 attached to the housing section 210, and a lid section 22 attached to the dust collection case 211. In other words, the filter section 80 is housed and covered by the dust collection case 211 and the lid section 22 attached to the housing section 210.

[0143] That is, when the filter section 80 is attached to the housing section 210, the inlet 18 of the housing section 210 is covered by the filter section 80. Further, when the dust collection case 211 with the lid section 22 attached is attached to the housing section 210 to which the filter section 80 is attached, the filter section 80 is covered by the dust collection case 211 and the lid section 22 and is disposed inside the dust collection case 211.

[0144] As a result, the air flow that has flowed into the dust collection chamber 212 from the air inlet 213 of the dust collection case 211 passes through the filter section 80 and enters the inside of the housing section 210 from the inlet 18. In other words, the filter section 80 is disposed on the flow path of the air flow flowing from the air inlet 213 through the dust collection chamber 212 to the inlet 18.

[0145] <Mounting Structure of the Second Filter Section 82> As described in the first embodiment, on the radially inner side of the housing-side first engaging portion 31, which is a groove opening radially outward, a housing-side second engaging portion 32 is provided. The housing-side second engaging portion 32 is a groove opening forward, and surrounds the entire circumference or substantially the entire circumference of the inlet 18. At two circumferential positions of the housing-side second engaging portion 32, retaining portions 34 are provided. Each of the retaining portions 34 is arranged at a position 180 degrees different from each other in the circumferential direction of the housing-side second engaging portion 32. For example, as shown in FIG. 30, the retaining portions 34 are arranged above and below the central axis X.

[0146] On one side of each of the retaining portions 34, a rotation stopper 35 is provided. As shown in FIG. 31, these rotation stoppers 35 are also arranged at positions 180 degrees different from each other in the circumferential direction of the housing-side second engaging portion 32.

[0147] As shown in FIG. 30, each of the retaining portions 34 is integrally formed with a screw boss 36 to which a screw for fixing to the casings 210a, 210b is coupled. Also, each of the retaining portions 34 projects forward like an eaves over the housing-side second engaging portion 32 and partially covers the housing-side second engaging portion 32.

[0148] When the second filter portion 82 is properly attached to the housing portion 210, the two filter-side engaging portions 823 are arranged at the positions shown in FIG. 30 within the housing-side second engaging portion 32 and abut against the rotation stoppers 35. That is, the second filter portion 82 properly attached to the housing portion 210 is restricted from further rotation by the filter-side engaging portion 823 abutting against the rotation stopper 35.

[0149] More specifically, the filter-side engaging portion 823 above the central axis X enters the back side of the retaining portion 34 above the central axis X and overlaps with the retaining portion 34. Also, the filter-side engaging portion 823 below the central axis X enters the back side of the retaining portion 34 below the central axis X and overlaps with the retaining portion 34. As a result, the movement of the second filter portion 82 in the front-rear direction is restricted.

[0150] <Detachment of the Second Filter Unit 82> When the second filter unit 82 attached to the housing portion 210 is rotated in the R1 direction shown in FIG. 2, the filter-side engaging portion 823 moves in the R1 direction within the housing-side second engaging portion 32 and disengages from the retaining portion 34. After that, when the second filter unit 82 is pulled forward, the filter-side engaging portion 823 is pulled out from the housing-side second engaging portion 32. That is, the engagement between the filter-side engaging portion 823 and the housing-side second engaging portion 32 is released, and the second filter unit 82 is removed from the housing portion 210, that is, the main body portion 21.

[0151] When the filter unit 80 is removed, the dust collecting bag 7 can be accommodated in the dust collecting chamber 212 by attaching the dust collecting bag 7 to the holding portion 6 provided on the lid portion 22. In other words, the cleaner 1 of the third embodiment includes a filter unit 80 that can be detachably attached to the housing portion 210, which is a motor housing portion, alternatively to the dust collecting bag 7.

[0152] Note that the holding portion 6 is not limited to having the configuration described in the first embodiment, and may have the configuration described in any of the modified examples and the second embodiment.

[0153] On the other hand, when the filter-side engaging portion 823 is inserted into the housing-side second engaging portion 32 from a location where the retaining portion 34 is not provided, and then the second filter unit 82 is rotated in the R2 direction, the filter-side engaging portion 823 and the housing-side second engaging portion 32 engage again. More specifically, each of the two filter-side engaging portions 823 enters behind the retaining portion 34 and overlaps with the retaining portion 34. That is, the second filter unit 82 is attached to the housing portion 210, that is, the main body portion 21 again.

[0154] When the cleaner 1 is operated with the filter unit 80 attached, the filter unit 80 captures the dust contained in the air sucked by the cleaner 1. The dust captured by the filter unit 80 is stored in the dust collection chamber 212. The dust accumulated in the dust collection chamber 212 can be discarded by removing the dust collection case 211 from the storage unit 210 as described in the first embodiment. Further, the filter unit 80 can be removed from the storage unit 210 for cleaning or replacement.

[0155] According to the third embodiment described above, in addition to the effects obtained by the first and second embodiments and the modifications, the following effects can be obtained.

[0156] The cleaner 1 includes a dust collection case 211 that is a dust collection chamber defining portion, which is detachable from a storage portion 210 that is a motor housing portion, and a filter unit 80 that can be alternatively attached to the storage portion 210 with respect to the dust collection bag 7. Thereby, since the dust collection bag 7 and the filter unit 80 can be appropriately selected and used, convenience is improved.

[0157] In the above, various embodiments and modifications have been described, but the present invention is not limited to these contents. Other aspects conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention.

Explanation of Reference Numerals

[0158] 1 Cleaner, 2 Housing portion, 4 Motor, 5 Fan, 6 Holding portion, 7 Dust collection bag, 21 Main body portion, 22 Lid portion, 61 Holding base, 62, 74 Engaging portion, 63, 75 Operating portion, 64 Fixing portion, 71 Base portion, 72 Bag portion, 80 Filter unit, 210 Storage portion, 211 Dust collection case, 212 Dust collection chamber, 220 Outer surface, 221 Front surface, 224 Opening edge, 225 Hinge portion, 621, 731 First engaging portion, 622, 732 Second engaging portion, 623 First rotation axis, 624 Second rotation axis, 631 First operating portion (first inhibiting portion), 632 Second operating portion (second inhibiting portion), 640 Engaging recess, 710 Vent

Claims

1. A motor, a fan that rotates by receiving the driving force of the motor, a dust collection bag capable of collecting dust inside, a housing portion that supports the motor and the fan, and a holding portion attached to the housing portion and detachably holding the dust collection bag. The dust collection bag has a plate-shaped base portion that extends in a first extension direction and a second extension direction orthogonal to the first extension direction and has a ventilation opening, and a bag-shaped bag portion connected to the base portion. The holding portion is disposed on one side of the ventilation opening in the first extension direction so as to overlap the ventilation opening in the first extension direction, and is a first engaging portion that can switch between engagement with and release from the base portion by rotating about a first rotation axis. is disposed on the other side of the ventilation opening in the first extension direction so as to overlap the ventilation opening in the first extension direction, and is a second engaging portion that can switch between engagement with and release from the base portion by rotating about a second rotation axis. and a third engaging portion that is disposed on one side of the ventilation opening in the second extension direction so as to overlap the ventilation opening in the second extension direction and engages with the base portion.

2. In the working machine according to Claim 1, the housing portion has a main body portion that supports the motor and the fan, and a lid portion that is assembled to the main body portion so as to be adjacent to the main body portion in the second extension direction, and cooperates with the main body portion to define a dust collection chamber that houses the dust collection bag. a first inhibiting portion that inhibits the assembly of the lid portion and the main body portion when the engagement of the first engaging portion with the base portion is released, and a second inhibiting portion that inhibits the assembly of the lid portion and the main body portion when the engagement of the second engaging portion with the base portion is released.

3. In the working machine according to Claim 2, the first engaging portion and the first inhibiting portion rotate integrally, and the second engaging portion and the second inhibiting portion rotate integrally.

4. In the working machine according to Claim 3, the first rotation axis and the second rotation axis extend along the second extension direction. When the first inhibiting portion and the second inhibiting portion move in a direction in which they approach each other, the engagement of the first engaging portion and the second engaging portion with the base portion is released.

5. In the working machine according to Claim 4, the first inhibiting portion and the second inhibiting portion are disposed inside the first engaging portion and the second engaging portion in the first extension direction.

6. In the working machine according to claim 5, The first engaging portion and the second engaging portion are arranged offset to the other side in the second extending direction with respect to the ventilation port, the working machine.

7. A motor, A fan that rotates by receiving the driving force of the motor, A dust collection bag capable of collecting dust inside, A main body portion that supports the motor and the fan, A lid portion that defines a dust collection chamber that houses the dust collection bag in cooperation with the main body portion by being attached to the main body portion, A holding portion that is attached to the lid portion and detachably holds the dust collection bag, and includes: The dust collection bag has a plate-like shape extending in a first extending direction and a second extending direction orthogonal to the first extending direction, and has a base portion having a ventilation port and a bag-shaped bag portion connected to the base portion, The holding portion is A first engaging portion that is arranged on one side in the first extending direction with respect to the ventilation port so as to overlap the ventilation port in the first extending direction and engages with the base portion, A second engaging portion that is arranged on the other side in the first extending direction with respect to the ventilation port so as to overlap the ventilation port in the first extending direction and is capable of switching engagement and disengagement with the base portion, A third engaging portion that is arranged on one side in the second extending direction with respect to the ventilation port so as to overlap the ventilation port in the second extending direction and engages with the base portion, the working machine.

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