Work machine

Abstract

To provide a work machine with an improved convenience.SOLUTION: A cleaner 1 as a work machine includes: a motor 4; a fan 5 that rotates by a driving force of the motor 4; a dust collection bag 7 which can collect dusts therein; a body 21 for supporting the motor 4 and the fan 5; and a cover part 22 having an opening edge of a side through which the duct collection bag 7 can pass through, which defines a dust collection chamber 212 for storing the duct collection bag 7 in cooperation with the body 21 by being assembled to the body 21 such that the opening edge comes into contact with the body 21. The body 21 is provided with a nozzle 214 which defines a flow path of an air flow that flows into the duct collection bag 7 from an outside of the duct collection chamber 212 by communicating inside and outside of the duct collection chamber 212. The cover part 22 is provided with a holding part 6 for holding the duct collection bag 7 in an attachable / detachable manner.SELECTED DRAWING: Figure 3

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 that is rotationally driven by a motor and a dust bag (dust collecting 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] However, it is desired to improve the workability and enhance the convenience when removing and discarding the dust bag from the working machine.

Means for Solving the Problems

[0005] A working machine according to an embodiment includes a motor, a fan that rotates by receiving the driving force of the motor, a dust collecting bag capable of collecting dust inside, a main body portion that supports the motor and the fan, and an opening edge having a size through which the dust collecting bag can pass, and is assembled to the main body portion so that the opening edge abuts against the main body portion, thereby defining a dust collecting chamber for accommodating the dust collecting bag in cooperation with the main body portion, and a lid portion. An inflow pipe that defines a flow path of an air flow flowing from outside the dust collecting chamber into the dust collecting bag is provided in the main body portion by communicating the inside and outside of the dust collecting chamber. A holding portion for detachably holding the dust collecting bag is provided on the lid portion.

Effects of the Invention

[0006] According to the present invention, a working machine with improved convenience can be provided.

Brief Description of the Drawings

[0007]

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Mode for Carrying Out the Invention

[0008] <First Embodiment> While referring 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 along the line A-A shown in FIG. 2. FIG. 4 is a cross-sectional view of the cleaner 1 along the line B-B shown in FIG. 3.

[0009] <Overall Structure> The cleaner 1 includes a housing unit 2, a motor 4, a fan 5, and a holding unit 6. The housing unit 2 has a main body unit 21 and a lid unit 22. The lid unit 22 is detachably provided on the main body unit 21. The motor 4 and the fan 5 are accommodated in the main body unit 21. The holding unit 6 is provided on the lid unit 22 and detachably holds the dust collection bag 7. That is, the dust collection bag 7 is detachable from the lid unit 22.

[0010] <Housing Unit 2> The housing unit 2 is composed of the above-described main body unit 21 and lid unit 22, which are molded from synthetic resin.

[0011] <Main Body Unit 21> The main body unit 21 is composed of a housing part 210 and a dust collection case 211. Specifically, the housing part 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 unit 6 provided on the lid unit 22.

[0012] 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 part 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 part 210 may be referred to as the other side or the rear side.

[0013] <Housing Part 210> FIG. 5 is a perspective view of the cleaner 1 with the dust collection case 211 removed from the housing part 210. The housing part 210 is composed of two casings 210a and 210b molded from synthetic resin. The casings 210a and 210b are fixed to each other in a butted state to form the housing part 210. More specifically, the casings 210a and 210b are fixed to each other by fixing elements such as screws. Viewed from another perspective, if the fixing by the fixing elements is released, the casings 210a and 210b constituting the housing part 210 can be separated from each other.

[0014] Still, 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 the 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 orthogonal to the first direction D1 and the second direction D2 is referred to as the third direction D3. In the third direction D3, the side facing from the battery pack 13, which will be described later, to the grip 9 may be referred to as one side or the upper side, and the side facing from the grip 9 to the battery pack 13 may be referred to as the other side or the lower side.

[0015] As shown in FIG. 5, an inlet 18 communicating 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. 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 collecting case 211 when the dust collecting case 211, which will be described later, is attached to the housing portion 210.

[0016] 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 inside the housing-side first engaging portion 31 in the radial direction and is provided at a position overlapping the housing-side first engaging portion 31 in the front-rear direction. Also, the housing-side second engaging portion 32 is common to the housing-side first engaging portion 31 in that it is a groove provided around the inlet 18. Also, at two locations in the circumferential direction of the housing-side first engaging portion 31, notch portions 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.

[0017] In front of the inlet 18 of the housing part 210, a pack support part 40 for supporting the dust collection bag 7 and a filter 41 for the support part are provided. The pack support part 40 is composed of a cylindrical part 401 having a cylindrical shape centered on the central axis X and a flange part 402 formed at the rear end of the cylindrical part 401. Slits and mesh-like openings are formed in the front wall surface 401a and the side wall surface 402b on the front side of the cylindrical part 401.

[0018] Engagement recesses 402a, which are latch parts provided in respective ones of a pair of recesses, are provided in the side wall surface of the flange part 402. Each of the engagement recesses 402a is arranged at a position 180 degrees different from each other in the circumferential direction of the side wall surface of the flange part 402. For example, as shown in FIG. 5, the engagement recesses 402a are arranged on the right side and the left side with respect to the central axis X.

[0019] A pair of engagement protrusions 180, which are latch parts protruding toward the central axis X, are provided on the inner wall surface of the inlet 18. Each of the engagement protrusions 180 is arranged at a position 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 engagement protrusions 180 are arranged on the right side and the left side with respect to the central axis X. By the two engagement recesses 402a and the two engagement protrusions 180 engaging with each other, the pack support part 40 is attached to the inlet 18.

[0020] The filter 41 for the support part is a porous synthetic resin such as 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, by inserting the cylindrical part 401 into the through hole 410, the filter 41 for the support part is attached to the pack support part 40.

[0021] Near the rear end of the housing portion 210, a battery mounting portion 14 for mounting the battery pack 13 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 portion 14 each include connection terminals. When the battery pack 13 is mounted on the battery mounting portion 14, the connection terminals provided on each are electrically connected to each other.

[0022] The housing portion 210 houses the motor 4, the fan 5, the controller 15, etc. That is, the housing portion 210 functions as a motor housing portion that houses the motor 4 and the fan 5. In other words, the main body portion 21 supports the motor 4 and the fan 5. It can also be said that the housing portion 2 supports the motor 4 and the fan 5.

[0023] The motor 4 housed in the housing portion 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. 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.

[0024] 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 inside of the housing portion 210 from the intake port 213 provided in front of the dust collection case 211, through the dust collection case 211 and the dust collection bag 7, and from the inflow port 18. The air that has flowed into the housing portion 210 passes through the inside 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 inside 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.

[0025] Still, the motor 4 operates based on the operation of the operation unit 8 provided on the grip 9 which is a part of the housing unit 210. More specifically, when the operation unit 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.

[0026] <Dust collection case 211> The dust collection case 211 is detachable from the housing unit 210. The dust collection case 211 is molded from a synthetic resin and has a generally cylindrical shape as a whole. At the tip of the dust collection case 211, that is, at 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 inside of the nozzle 214 penetrates the dust collection case 211 to communicate the inside and outside of the dust collection chamber 212 described later, and defines a flow path through which the air flow flowing from the outside to the inside of the dust collection chamber 212 flows.

[0027] At the rear end of the dust collection case 211, that is, at the rear end portion, a pair of case-side engaging portions 215a, 215b are provided (see FIG. 4). More specifically, a pair of case-side engaging portions 215a, 215b that project 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, 215b is a projection extending in the circumferential direction of the dust collection case 211, and is disposed 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, 215b are disposed on the right side and the left side with respect to the central axis X.

[0028] The dust collection case 211 is detached from the housing unit 210 by being relatively rotated with respect to the housing unit 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, 215b are aligned with the positions of the notch portions 37 formed in the housing-side first engaging portion 31 of the housing unit 210, the case-side engaging portions 215a, 215b can be inserted into and removed from the housing-side first engaging portion 31.

[0029] With the positions of the case-side engaging portions 215a and 215b aligned with the position of the notch portion 37, when the dust collection case 211 is relatively rotated in the R1 direction shown in FIG. 2 with respect to the housing portion 210, 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 engage normally with the housing-side first engaging portion 31, and the dust collection case 211 is normally attached to the housing portion 210.

[0030] On the other hand, when the dust collection case 211 attached as described above is relatively rotated in 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. Then, when the rotation angle of the dust collection case 211 reaches about 120 degrees, the positions of the case-side engaging portions 215a and 215b coincide with the positions of the two notch portions 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 notch portions 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.

[0031] The dust collection case 211 attached to the housing portion 210 cooperates with a 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. A dust collection bag 7 attached to the lid portion 22 as described later is accommodated in the dust collection chamber 212.

[0032] 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.

[0033] 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.

[0034] <Cover portion 22> FIG. 6 is a perspective view when the cover portion 22 is viewed from below. FIG. 7 is a plan view when the cover portion 22 is viewed from below. FIG. 8 is a side view of the cover portion 22.

[0035] 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 so as 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.

[0036] 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.

[0037] 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.

[0038] The lid operation part 226 is arranged to be slidable in the front-rear direction within a mounting recess 228 (see FIGS. 3 and 8) formed at the upper rear end part of the outer surface 220. Specifically, an elastic member 229 (see FIG. 3), such as a spring, arranged 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 toward the rear side. 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 ceases, the lid operation part 226 moves rearward within the mounting recess 228 due to the biasing force of the elastic member 229.

[0039] The lid-side engaging part 227 is formed near the lower end part of the rear wall surface of the lid operation part 226. The lid-side engaging part 227 is a latch that protrudes 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.

[0040] <Attachment and detachment of the lid part 22> Referring 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 during the attachment and detachment of the lid part 22, and FIG. 10 is a cross-sectional view of the cleaner 1 during the attachment and detachment of the lid part 22. 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.

[0041] When assembling the lid portion 22 to the dust collection case 211, with the front side inclined downward relative to the rear side, the hinge portion 225 is accommodated within the case-side engaging portion 218. In this state, when the lid portion 22 is rotated in the R3 direction about the hinge portion 225 as the rotation axis, the rear side of the lid portion 22 moves downward, and the lid-side engaging portion 227 engages with the case-side engaging 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.

[0042] 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 constituted by the accommodation portion 210 and the dust collection case 211 to define the above-described dust collection chamber 212.

[0043] Also, as described above, a seal member 224a is attached to the opening edge 224. Therefore, 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.

[0044] 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 engaging portion 227 and the case-side engaging portion 218 is released. Thereafter, the lid portion 22 is rotated in the R4 direction about the hinge portion 225 as the rotation axis. Then, as shown in FIG. 10, with the hinge portion 225 remaining accommodated within the case-side engaging 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 inclined upward relative to the front side, the hinge portion 225 is pulled out from the case-side engaging portion 218, and the lid portion 22 is removed from the dust collection case 211.

[0045] <Holding portion 6> FIG. 12 is a cross-sectional view of the lid portion 22 along the C-C line 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 detachably holds a dust collecting bag 7 described later.

[0046] <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.

[0047] 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.

[0048] 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 vent hole 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.

[0049] Again, refer 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 vent hole 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 vent hole 610 and the intake port 213 is suppressed.

[0050] <Engaging portion 62> When the dust collection bag 7 described later is attached to the holding portion 6, the engaging portion 62 engages with the dust collection bag 7. Specifically, the engaging portion 62 engages with the base portion 71 of the dust collection bag 7 (see FIGS. 14 and the like described later). The engaging portion 62 has a first engaging portion 621 and a second engaging portion 622.

[0051] The first engaging 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 engaging 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 engaging 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.

[0052] 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 first engaging portion 621 is restricted from rotating by abutting against 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.

[0053] 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 toward the rear side.

[0054] 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.

[0055] 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 vent 610 to near the center of the vent 610 (near the central axis X) in the vertical direction. That is, the first engaging portion 621 is arranged so as to overlap the vent 610 (that is, the vent 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 vent 610 (the vent 710 of the dust collection bag 7).

[0056] 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 (the second extending direction DD2) disposed on the left side of the holding base 61. By the rotation of the second engaging portion 622 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.

[0057] In addition, the second engaging portion 622 is biased in the R7 direction by a biasing member (not shown). However, the rotation of the second engaging portion 622 is restricted by abutting against a restricting portion 626 when the dust collecting bag 7 is not attached. 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.

[0058] 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.

[0059] The engaging extension portion 622a and the engaging hook portion 622b also extend in the vertical direction (the third direction D3, the 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 (the 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).

[0060] <Operation portion 63> The operation unit 63 is operated by an operator to release 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.

[0061] 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 with the vertical direction (the third direction D3, the second extension direction DD2). As shown in FIG. 7, the direction intersecting with the vertical direction is the first direction D1 (front-rear direction) when the rotation of the first engagement part 621 is restricted.

[0062] The first operation unit 631 is integrally formed with the first engagement unit 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 unit 621. Therefore, the first operation unit 631 rotates integrally with the first engagement unit 621 in the R5 direction or the R6 direction around the first rotation axis 623.

[0063] 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 unit 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 unit 622. Therefore, the second operation unit 632 rotates integrally with the second engagement unit 622 in the R7 direction or the R8 direction around the second rotation axis 624.

[0064] 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 a similar abutting part 219 is also provided on the left side of the dust collection case 211.

[0065] The contact portion 219 is a plate-shaped 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). When the rotation of the first engaging portion 621 and the second engaging portion 622 is restricted (that is, in a state where the operation extension portions 631a and 632a extend in the front-rear direction), the contact portion 219 contacts the operation end portions 631b and 632b. As a result, 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 operating portion 631 with the base portion 71 of the first engaging portion 621 is released, the first operating portion 631 functions as a first inhibiting portion that inhibits the assembly of the lid portion 22 and the main body portion 21. Further, when the engagement of the second operating portion 632 with the base portion 71 of the second engaging portion 622 is released, the second operating portion 632 functions as a second inhibiting portion that inhibits the assembly of the lid portion 22 and the main body portion 21.

[0066] <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).

[0067] A groove-shaped engaging 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 engaging 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 engaging portion that engages with the base portion 71.

[0068] <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 of 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.

[0069] <Dust collection bag 7> The dust collection bag 7 is detachable from the holding portion 6 described later.

[0070] 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.

[0071] 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.

[0072] A vent hole 710, which is an opening centered on the central axis X, is formed in the base portion 71. The diameter of the vent hole 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 vent hole 710 is an inlet for dust when the dust that has flowed in together 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 non-woven fabric. The bag portion 72 is a bag-shaped member that captures the dust that has flowed in together 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.

[0073] <Detachment and attachment of the dust collecting bag 7> In addition to FIGS. 14 to 16, referring to FIG. 17, the attachment of the dust collecting bag 7 to the holding portion 6 will be described. FIG. 17 is a plan view of the lid portion 22, the holding portion 6, and the dust collecting bag 7 when the dust collecting bag 7 is in the attached state. Further, referring to FIG. 18, the removal of the dust collecting bag 7 from the holding portion 6 will be described. FIG. 18 is a plan view of the lid portion 22, the holding portion 6, and the dust collecting bag 7 when the operation of removing the dust collecting bag 7 is performed.

[0074] <Attachment of the dust collecting bag 7> When attaching the dust collecting bag 7 to the holding portion 6 in the lid portion 22 in the state shown in FIGS. 6 to 8 and FIG. 12, first, a part of the dust collecting bag 7 passes inside the opening edge 224 of the lid portion 22 and is thereby 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 collecting bag 7 can pass. The protrusion 711 formed on the base portion 71 of the dust collecting bag 7 accommodated in the opening portion 223 is inserted into the engagement recess 640 formed in the fixing portion 64 of the holding portion 6.

[0075] 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 collecting 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 collecting 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.

[0076] When the dust collecting 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 collecting 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.

[0077] 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, the engaging surface 621d, which is the front surface of the engaging hook portion 621b formed on the first engaging portion 621, and the 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.

[0078] 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 ventilation port 710 of the base portion 71, and the edge of the ventilation port 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 ventilation port 710 and the lip portion 612 is in close contact.

[0079] 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).

[0080] 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).

[0081] 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 in the vertical direction with the support surface 650 of the attachment support portion 65. In this way, the lid portion 22 in the state where the dust collection bag 7 is attached to the holding portion 6 is assembled to the dust collection case 211 by the method described above.

[0082] 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 is 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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 attempts to move rearward by the air flow flowing into the interior 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 this 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 occurring between the base portion 71 and the holding base portion 61.

[0087] 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 at 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.

[0088] Also, as described above, when the dust collection bag 7 is attached, the edge of the vent hole 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 vent hole 710 is suppressed.

[0089] 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. For this reason, 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 formed between the base portion 71 and the holding base portion 61.

[0090] However, as shown in FIG. 13, the height H1 at which the region 612a below the lip portion 612 protrudes from the holding base portion 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 close contact state. For this reason, leakage of the air flow and dust contained in the air flow from the ventilation port 710 is suppressed.

[0091] <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, the lid portion 22 is pulled backward, so that the lid portion 22 is removed from the dust collection case 211. The removed lid portion 22 is moved, for example, to the upper part of a trash can or the like. Thereafter, with the opening portion 223 of the lid portion 22 facing downward, the operation portion 63 is operated by an operator. 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.

[0092] 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. Further, 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 collection bag 7 is released. When the engagement between the engaging portion 62 and the base portion 71 is released, the dust collection bag 7 falls by gravity into the interior of a lower dustbin or the like. That is, the operator can discard the dust collection bag 7 without directly touching the dust collection bag 7.

[0093] According to the first embodiment described above, at least one of the following operational effects can be obtained.

[0094] (1) The cleaner 1 includes a lid portion 22. The lid portion 22 has an opening edge 224 of a size through which a dust collection bag 7 capable of collecting dust inside can pass, and is assembled to the main body portion 21 such that the opening edge 224 abuts against the dust collection case 211 of the main body portion 21, thereby defining a dust collection chamber 212 for accommodating the dust collection bag 7 in cooperation with the main body portion 21. The lid portion 22 is provided with a holding portion 6 for detachably holding the dust collection bag 7. Therefore, when discarding the dust collection bag 7, it is only necessary to carry the lid portion 22 above a dustbin or the like, and there is no need to carry the entire cleaner 1. As a result, the work when discarding the dust collection bag 7 becomes easy and the workability is improved. Further, since the dust collection bag 7 can pass inside the opening edge 224, it is suppressed that the discard of the dust collection bag 7 is hindered by the shape of the lid portion 22 or the like, and the workability is improved.

[0095] (2) The holding portion 6 has an engaging portion 62 that engages with the dust collection bag 7 and an operating portion 63 that can release the engagement of the engaging portion 62 with respect to the dust collection bag 7 when operated by an operator. Thereby, the operator can discard the dust collection bag 7 without touching the dust collection bag 7, and the operability when discarding the dust collection bag 7 is improved.

[0096] (3) The holding part 6 holds the base part 71 of the dust collection bag 7 and does not hold the bag part 72. As a result, when the engagement of the holding part 6 is released, the dust collection bag 7 drops due to the self-weight of the bag part 72, so that the operation of discarding the dust collection bag 7 can be easily performed and the workability is improved.

[0097] (4) The operation part 63 is housed in the dust collection chamber 212 in a state where the lid part 22 is assembled to the main body part 21. Thereby, since the operation part 63 is prevented from being operated from the outside of the cleaner 1, it is possible to prevent the dust collection bag 7 from accidentally falling off during the use of the cleaner 1.

[0098] (5) The lid part 22 has the holding part 6 on one side (front side) in the first direction D1, and is assembled to the dust collection case 211 of the main body part 21 by rotating about the hinge part 225 that is arranged on one side (front side) in the first direction D1 and extends in the second direction D2 with the center of the rotation axis as the center. Thereby, the lid part 22 can be assembled to and removed from the main body part 21 with a simple operation, so that the workability when discarding the dust collection bag 7 is improved. Further, since the holding part 6 is arranged near the rotation center of the lid part 22, it is possible to prevent the dust collection bag 7 held by the holding part 6 from interfering with the main body part 21 when the lid part 22 is assembled or removed.

[0099] Further, compared with the configuration in which the lid part 22 is slid along the vertical direction and assembled to the dust collection case 211, in the present embodiment, the lid part 22 is assembled by rotating in the R3 direction with the hinge part 225 as the rotation center. For this reason, since a forward force acts on the seal member 613 provided on the front side of the lid part 22, the seal member 613 can be brought into close contact with the end part on the rear side of the nozzle 214. As a result, it is possible to prevent the air flow and the dust contained in the air flow from leaking from between the seal member 613 and the nozzle 214.

[0100] (6) The lid portion 22 constitutes the outer shell of the cleaner 1. Accordingly, unlike a working machine that includes a storage container that is detachably accommodated in the main body and in which the dust collection bag is detachably accommodated, and the dust collection bag 7 is discarded after removing the storage container from the main body, the dust collection bag 7 can be detachably held by a lid portion 22 that is a part of the housing portion 2. As a result, since it is not necessary to provide a storage container for the dust collection bag 7 as described above, the number of components can be reduced.

[0101] <Modification Example> A cleaner that is a working machine according to a modification example will be described. Hereinafter, the same reference numerals are given to configurations that are the same as or substantially the same as those of the cleaner 1 of the first embodiment, and differences from the first embodiment will be mainly described. For points not particularly described, they are the same as those of the first embodiment. The holding portion included in the cleaner according to the modification example has a different position for holding the base portion of the dust collection bag from that in the case of the first embodiment.

[0102] FIG. 19 is a perspective view of the lid portion 22 of the modification example as viewed from below. FIG. 20 is a side view of the lid portion 22 of the modification example. FIG. 21 is a cross-sectional view taken along line F-F shown in FIG. 20. In FIGS. 19 to 21, a case where the dust collection bag 7 is attached to the holding portion 6 of the lid portion 22 is shown.

[0103] In the modification example, the holding portion 6 has an engaging portion 73 having a shape different from that of the engaging portion 62 of the first embodiment. The engaging portion 73 is integrally formed with an operating portion 63 having the same shape as that of the first embodiment. The engaging portion 73 has a first engaging portion 731 and a second engaging portion 732.

[0104] The first engaging portion 731 is disposed on the right side of the holding base portion 61 (one side in the second direction D2, one side in the first extension direction DD1). The first engaging portion 731 is provided so as to be rotatable in the R5 direction or the R6 direction about a first rotation axis 623 shown in FIG. 7, in the same manner as in the case of the first embodiment. The first engaging portion 731 has an engaging extension portion having the same shape as the engaging extension portion 621a of the first embodiment and connected to a first operating portion 631 (see FIG. 7 etc.) of the operating portion 63 at the front end portion, and an engaging hook portion 731b.

[0105] 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 extending 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 to overlap the ventilation port 610 and the ventilation port 710 of the dust collection bag 7 in the left-right direction (the first extending 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 of the first side 71a of the base portion 71 along the second direction D2 (the first extending direction DD1).

[0106] 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 extending direction DD1). Similar to the case of the first embodiment, the second engaging portion 732 is provided to be rotatable in the R5 direction or the R6 direction about the second rotation shaft 624 shown in FIG. 7. The second engaging portion 732 has an engaging extension portion 732a and an engaging hook portion 732b. The engaging extension portion 732a has a shape similar to that of 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.

[0107] 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 extending 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 to overlap the ventilation port 610 and the ventilation port 710 of the dust collection bag 7 in the left-right direction (the first extending direction DD1).

[0108] The second hook portion area 734b is connected to the lower end portion of the first hook portion area 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 areas 733b and 734b are formed so as to have a gap between the left end portion of the second hook portion area 733b and the right end portion of the second hook portion area 734b. However, this gap is not limited to the size shown in the figure and may be wider or narrower than the illustrated case.

[0109] Since the engaging hook portion 731b has the above 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 lower first side 71a. Similarly, since the engaging hook portion 732b has the above 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 lower first side 71a. 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 lower first side 71a are held by the first engaging portion 731 and the second engaging portion 732, and the upper first side 71a 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.

[0110] Note that, also in the modified example, the same operational effects (1) to (6) as those obtained by the first embodiment can be obtained.

[0111] <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 denoted by 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. In the second embodiment, the position of the base of the dust collection bag held by the holding portion is different from that of the first embodiment. This will be described in detail below.

[0112] 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.

[0113] <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 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 attachment support portion 65 of the first embodiment and the modified example, and the engaging portion 74 is disposed at the position where the attachment support portion 65 was provided in the first embodiment and the modified example.

[0114] As shown in Fig. 26, the engaging portion 74 is disposed so as to be rotatable 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 of the holding base 61. When the engaging portion 74 rotates as described above, the engagement with and the release of the engagement with the base portion 71 of the dust collection bag 7 are switched.

[0115] 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 of the holding base 61, and the third rotation axis 743 is disposed inside. 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.

[0116] 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.

[0117] 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 contact between 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 where the rotation of the engaging portion 74 is restricted by the restricting portion 744.

[0118] <Operating portion 75> The operating portion 75 is composed of an operation extending portion 751 and an operation end portion 752 provided near the left end portion of the operation extending portion 751. The operation extending portion 751 extends along the left - right direction. The operating portion 75 is integrally formed with the engaging portion 74. That is, the right end portion of the operation extending portion 751 is connected to the left end portion of the rotating base portion 741. Therefore, the operating portion 75 can rotate integrally with the engaging portion 74 in the R10 direction or the R11 direction about the third rotation axis 743.

[0119] <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, similar to the case of the first embodiment.

[0120] 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, in the vertical direction, the region 753c close to the central axis X protrudes more rearward than regions 753a and 753b.

[0121] <Detachment and attachment of the dust collecting bag 7> FIG. 29 is a cross-sectional view of the lid portion 22, the holding portion 6, and the dust collecting bag 7 in a state where the dust collecting bag 7 is being attached to the holding portion 6. When attaching the dust collecting 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 collecting 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.

[0122] 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 collecting 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.

[0123] Due to the rotation of the dust collecting bag 7 in the R9 direction, the protruding portion 712 of the first side 71a on the lower side of the base portion 71 abuts against the inclined surface 742a of the engaging portion 74. As the dust collecting 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 collecting 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.

[0124] 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 abuts against the rear surface of the base 71. That is, the dust collection bag 7 is attached to the holding portion 6.

[0125] 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 first side 71a below 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 operates 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, creating a gap.

[0126] 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.

[0127] 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 abut against the inner wall surface of the dust collection case 211.

[0128] On the other hand, when the dust collection bag 7 is not attached to the holding portion 6, when the lid portion 22 is assembled to the dust collection case 211, the protruding portion 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 portion 22 do not abut. That is, the assembly of the dust collection case 211 and the lid portion 22 is inhibited by the protruding portion 745. In other words, the protruding portion 745 functions as an inhibiting portion.

[0129] When removing the dust collection bag 7, in the same manner as in the case of the first embodiment, the lid portion 22 is removed from the dust collection case 211, and in a state where the opening portion 223 is directed downward, it is moved to the upper part of, for example, a dustbin. Thereafter, the operation portion 75 is operated by an operator with the opening portion 223 of the lid portion 22 directed downward.

[0130] Specifically, an operation in the R11 direction is performed on the operation end portion 752 of the operation portion 75. Note that instead of the operation portion 75 being operated in the R11 direction, an operation in the R11 direction may be performed on the engaging hook portion 742 of the engaging portion 74. Further, an operation in the R11 direction may be performed on the protruding portion 745. In this case, the protruding portion 745 also functions as an operation portion.

[0131] In response to the above operation, the operation portion 75 rotates in the R11 direction, and the engaging portion 74 connected to the operation portion 75 also rotates in the R11 direction. As a result, the contact between the engaging surface 742b of the engaging portion 74 and the rear surface of the base portion 71 is released, and the engagement between the engaging portion 74 and the base portion 71 of the dust collection bag 7 is released. When the engagement between the engaging portion 74 and the base portion 71 is released, the dust collection bag 7 falls into the lower dustbin or the like due to 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.

[0132] By having the above configuration, also in the second embodiment, the same operational effects (1) to (6) as those obtained by the first embodiment described above can be obtained.

[0133] <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 those of 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 mounted in the dust collection chamber.

[0134] FIG. 30 is a cross-sectional view of the cleaner 1 taken along line A-A shown in FIG. 2, showing the case where the filter unit 80 is mounted instead of the dust collection bag 7. FIG. 31 is a perspective view of the cleaner 1 when the filter unit 80 is mounted.

[0135] The filter unit 80 has a first filter unit 81 and a second filter unit 82, and is detachably attached to the accommodation part 210 of the main body part 21. The filter unit 80 attached to the accommodation part 210 is disposed in the dust collection chamber 212 defined between the accommodation part 210, the dust collection case 211, and the lid part 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 accommodation part 210. Further, the filter unit 80 can be removed from the accommodation part 210 for cleaning or replacement.

[0136] <The first filter unit 81> The first filter unit 81 is detachable from the inlet 18 after the pack support part 40 is removed. The first filter unit 81 has a first frame body part 810 having a cylindrical shape centered on the central axis X, and a filter medium 811 attached to the first frame body part 810.

[0137] The first frame body portion 810 is formed of a synthetic resin. On the side wall surface of the first frame body portion 810, engaging recesses 812, which are latch portions provided in each of a pair of recesses, are formed. Each of the engaging recesses 812 is arranged at a position 180 degrees different from each other in the circumferential direction of the side wall surface of the first frame body portion 810. For example, as shown in FIG. 31, the engaging recesses 812 are arranged on the right side and the left side with respect to the central axis X. By engaging the two engaging recesses 812 and a pair of engaging protrusions 180 provided on the inner wall surface of the inlet 18 respectively, the first filter portion 81 is attached to the inlet 18. The filter medium 811 is held by the first frame body portion 810 in front of the inlet 18. The filter medium 811 is formed of a breathable material such as a porous synthetic resin such as a sponge.

[0138] <The second filter portion 82> The second filter portion 82 is arranged in front of the first filter portion 81 and is detachable from the housing portion 210. The second filter portion 82 has 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 non-woven 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 engaging portions 823 protruding radially outward are integrally formed on the annular frame 822.

[0139] Further, as shown in FIG. 30, a support frame 83 protruding from the periphery forward 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 a gap is provided between adjacent plate members. The support frame 83 supports the filter main body 821 from the inside and maintains the shape of the filter main body 821.

[0140] As described above, the filter unit 80 including the first filter unit 81 and the second filter unit 82 is disposed in the dust collection chamber 212 defined by the housing unit 210, the dust collection case 211 attached to the housing unit 210, and the lid unit 22 attached to the dust collection case 211. Viewed another way, the filter unit 80 is accommodated and covered by the dust collection case 211 and the lid unit 22 attached to the housing unit 210.

[0141] That is, when the filter unit 80 is attached to the housing unit 210, the inlet 18 of the housing unit 210 is covered by the filter unit 80. Further, when the dust collection case 211 with the lid unit 22 attached is attached to the housing unit 210 to which the filter unit 80 is attached, the filter unit 80 is covered by the dust collection case 211 and the lid unit 22 and is disposed in the dust collection case 211.

[0142] 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 unit 80 and enters the interior of the housing unit 210 from the inlet 18. Viewed another way, the filter unit 80 is disposed on the flow path of the air flow that flows from the air inlet 213 through the dust collection chamber 212 to the inlet 18.

[0143] <Mounting Structure of the Second Filter Unit 82> As described in the first embodiment, on the radially inner side of the housing-side first engagement portion 31, which is a groove that opens toward the radially outer side, a housing-side second engagement portion 32 is provided. The housing-side second engagement portion 32 is a groove that opens forward and surrounds the entire circumference or substantially the entire circumference of the inlet 18. At two circumferential positions of the housing-side second engagement portion 32, retaining portions 34 are provided. Each of the retaining portions 34 is disposed at a position that is 180 degrees different from each other in the circumferential direction of the housing-side second engagement portion 32. For example, as shown in FIG. 30, the retaining portions 34 are disposed on the upper side and the lower side with respect to the central axis X.

[0144] A rotation stopper 35 is provided on one side of each retaining portion 34. 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.

[0145] As shown in FIG. 30, each retaining portion 34 is integrally formed with a screw boss 36 to which a screw for fixing to the casings 210a and 210b is coupled. Further, each retaining portion 34 projects like an eaves in front of the housing-side second engaging portion 32 and partially covers the housing-side second engaging portion 32.

[0146] 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.

[0147] 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 the retaining portion 34. Further, 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 the retaining portion 34. As a result, the movement of the second filter portion 82 in the front-rear direction is restricted.

[0148] <Attachment and detachment of the second filter portion 82> When the second filter portion 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 portion 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 portion 82 is removed from the housing portion 210, that is, from the main body portion 21.

[0149] When the filter unit 80 is removed, the dust collection bag 7 can be accommodated in the dust collection chamber 212 by attaching the dust collection 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 accommodating portion 210, which is a motor accommodating portion, alternatively to the dust collection bag 7.

[0150] 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 modification examples and the second embodiment.

[0151] On the other hand, when the filter-side engaging portion 823 is inserted into the housing-side second engaging portion 32 from a position 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 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.

[0152] 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 housing portion 210 as described in the first embodiment. Further, the filter unit 80 can be removed from the housing portion 210 and cleaned or replaced.

[0153] According to the third embodiment described above, in addition to the effects (1) to (6) obtained by the first and second embodiments and the modification examples, the following effects can be obtained.

[0154] The cleaner 1 includes a dust collection case 211 which is a dust collection chamber defining part and is detachable from a housing part 210 which is a motor housing part, and includes a filter part 80 which can be alternatively attached to the housing part 210 with respect to the dust collection bag 7. Thereby, since the dust collection bag 7 and the filter part 80 can be appropriately selected and used, convenience is improved.

[0155] In the above, various embodiments and modification examples 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

[0156] 1 Cleaner, 2 Housing part, 4 Motor, 5 Fan, 6 Holding part, 7 Dust collection bag, 21 Main body part, 22 Lid part, 40 Pack support part, 61 Holding base, 62,74 Engaging part, 63,75 Operating part, 64 Fixing part, 71 Base, 72 Bag part, 80 Filter part, 210 Housing part, 211 Dust collection case, 212 Dust collection chamber, 214 Nozzle, 220 Outer surface, 221 Front surface, 224 Opening edge, 225 Hinge part, 401a Front wall surface, 621,731 First engaging part, 622,732 Second engaging part, 623 First rotation axis, 624 Second rotation axis, 631 First operating part (first inhibiting part), 632 Second operating part (second inhibiting part), 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 main body that supports the motor and the fan, a lid portion having an opening edge through which the dust collection bag can pass, and being assembled to the main body so that the opening edge abuts against the main body, thereby defining a dust collection chamber for accommodating the dust collection bag in cooperation with the main body, The main body is provided with an inflow pipe that defines a flow path of an air flow flowing from outside the dust collection chamber into the dust collection bag by communicating the inside and outside of the dust collection chamber, The lid portion is provided with a holding portion for detachably holding the dust collection bag, a working machine.

2. In the working machine according to Claim 1, The holding portion has an engaging portion that engages with the dust collection bag and an operating portion that can be operated by an operator to release the engagement of the engaging portion with the dust collection bag, a working machine.

3. In the working machine according to Claim 2, The dust collection bag has a plate-shaped base portion provided with an inlet through which dust passes and a bag-shaped bag portion connected to the base portion, The holding portion holds the base portion and does not hold the bag portion, a working machine.

4. In the working machine according to Claim 3, The operating portion is accommodated in the dust collection chamber in a state where the lid portion is assembled to the main body, a working machine.

5. In the working machine according to Claim 3, The main body has a abutting portion that abuts against the bag portion and restricts the bag portion from moving in a direction away from the holding portion, a working machine.

6. In the working machine according to Claim 5, The abutting surface of the abutting portion that abuts against the bag portion is located closer to the holding portion side than the end portion of the opening edge in the direction in which the bag portion moves away from the holding portion, a working machine.

7. In the working machine according to Claim 1, The lid portion has the holding portion on one side in a first direction, and is assembled to the main body by rotating about a rotation axis that is arranged on one side in the first direction and extends in a second direction intersecting the first direction, a working machine.

8. In the working machine according to Claim 1, The lid portion constitutes an outer shell, a working machine.

9. In the working machine according to Claim 1, The main body includes a motor housing portion that houses the motor and the fan and a dust collection chamber defining portion that defines the dust collection chamber between the lid portion, The dust collection chamber defining portion is detachable from the motor housing portion, A working machine including a dust collection bag and a filter unit that can be alternatively attached to the motor housing portion.

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