Cleaner

Abstract

To provide a technique that restrains clogging of a filter.SOLUTION: A cleaner according to the present disclosure comprises: a case extended in a predetermined axial direction; a suction source constituted so as to generate a suction force for sucking dust; and a filter partitioning an internal space of the case into a driving chamber in which the suction source is housed, and a dust storage chamber into which the dust and air sucked by the suction force of the suction source flow, and having meshes of a size for allowing passage of the air flowing to the driving chamber from the dust storage chamber, and retaining the dust contained in the air, in the dust storage chamber. The filter is arranged in the case, taking an inclined posture inclined from a perpendicular posture perpendicular to the axial direction of the case.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to vacuum cleaners. [Background technology]

[0002] Patent Document 1 discloses a stick-type vacuum cleaner 300 as shown in Fig. 11. Vacuum cleaner 300 includes a substantially rectangular box-shaped housing 310, a handle 320 extending upward from housing 310, a suction tube 330 extending downward from housing 310, and a suction nozzle 340 attached to the lower end of suction tube 330.

[0003] The internal space of housing 310 is divided into upper and lower sections by filter 315, which is arranged horizontally within housing 310. The space above filter 315 is used as drive chamber 316, which houses suction source 312 configured to generate suction force for sucking dust on the floor. The space below filter 315 is used as dust storage chamber 317, into which dust and air sucked up by suction source 312 through suction nozzle 130 and suction pipe 330 flow. Filter 315 is configured to allow air to pass from dust storage chamber 317 to drive chamber 316, while capturing dust contained in this air. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 3-267032 Summary of the Invention [Problem to be solved by the invention]

[0005] While suction source 312 is operating, dust is adsorbed to the underside of filter 315. When suction source 312 is stopped, the dust falls from filter 315. However, some of the dust does not fall from filter 315 even after suction source 312 is stopped, and may clog filter 315. If filter 315 becomes entirely clogged, the suction force of suction nozzle 340 will be greatly reduced.

[0006] An object of the present disclosure is to provide a technique for suppressing clogging of a filter. [Means for solving the problem]

[0007] The vacuum cleaner of the present disclosure includes a housing extending in a predetermined axial direction, a suction source disposed within the housing and configured to generate a suction force for sucking in dust, a drive chamber containing the suction source, a dust storage chamber into which dust sucked by the suction force of the suction source and air flow, and a filter that divides the internal space of the housing into a drive chamber containing the suction source and has holes sized to allow air to pass from the dust storage chamber to the drive chamber while retaining dust contained in the air in the dust storage chamber. The filter is disposed within the housing in an inclined position that is inclined from a right-angle position perpendicular to the axial direction of the housing. [Effects of the Invention]

[0008] The present disclosure can suppress clogging of the filter. [Brief explanation of the drawings]

[0009] [Figure 1] Vertical cross-sectional view of a vacuum cleaner (first embodiment) [Figure 2] Perspective view of a vacuum cleaner [Figure 3] Perspective view of a vacuum cleaner filter [Figure 4] Vertical cross section of another vacuum cleaner [Figure 5] Vertical cross section of another vacuum cleaner [Figure 6] Vertical cross section of another vacuum cleaner [Figure 7]Vertical cross-sectional view of another vacuum cleaner (second embodiment) [Figure 8] Vertical cross section of another vacuum cleaner [Figure 9] Vertical cross section of another vacuum cleaner [Figure 10] Vertical cross section of another vacuum cleaner [Figure 11] Vertical cross section of a conventional vacuum cleaner DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, first and second embodiments of the vacuum cleaner will be described in detail with reference to the drawings. However, to facilitate understanding by those skilled in the art, for example, detailed descriptions of well-known matters or redundant descriptions of substantially identical configurations may be omitted. Note that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter recited in the claims.

[0011] (First embodiment) Fig. 1 is a schematic cross-sectional view of a stick-type vacuum cleaner 100. Fig. 2 is a perspective view of the vacuum cleaner 100. The vacuum cleaner 100 will be described with reference to Figs. 1 and 2.

[0012] (Overall structure of the vacuum cleaner) The vacuum cleaner 100 comprises a suction nozzle 130 that sucks up dust on the floor, a vacuum cleaner body 110 that stands upright relative to the suction nozzle 130, and a handle 140 that extends upward from an upper end 112 of the vacuum cleaner body 110. The vacuum cleaner body 110 and the handle 140 shown in Figures 1 and 2 are in an upright position relative to the suction nozzle 130. When the vacuum cleaner 100 is in use, the vacuum cleaner body 110 and the handle 140 are held by the user in a position tilted backward relative to the suction nozzle 130.

[0013] Suction nozzle 130 is provided with nozzle case 132 that is wider than vacuum cleaner body 110 so as to form wide suction space 131 for sucking in dust. Suction space 131 opens toward the floor at the front portion of nozzle case 132. Behind this opening, suction space 131 is closed by bottom 134 of nozzle case 132. A rotary scraping brush 133 is disposed in suction space 131, and scraping brush 133 is exposed from nozzle case 132 so as to be able to come into contact with the floor surface through the opening of suction space 131.

[0014] The vacuum cleaner main body 110 has a substantially cylindrical housing 111 having an axis extending in the vertical direction. The upper part of the housing 111 tapers toward an upper end 112 of the housing 111, and a grip part 140 extends upward from the upper end 112. The grip part 140 is a rod-shaped part having a thickness that allows it to be gripped by a user. As shown in FIG. 2, the grip part 140 is provided with an operating part 141 that is operated by the user.

[0015] Housing 111 is configured to incorporate various components for sucking up dust on the floor surface and storing the sucked up dust. Specifically, as shown in FIG. 1, a suction pipe 113 extending in the vertical direction is disposed inside the lower part of housing 111. The internal space of housing 111 above suction pipe 113 is divided into upper and lower sections by filter 172. The space above filter 172 (hereinafter referred to as "drive chamber 153") contains suction source 116 that generates a suction force to suck up dust on the floor surface and generate an upward suction airflow, and power storage unit 117 that stores power for operating suction source 116. Dust and air sucked up through suction nozzle 130 and suction pipe 113 by the suction force of suction source 116 flow into the space below filter 172 (hereinafter referred to as "dust storage chamber 152"). The filter 172 is configured to capture dust that has flowed into the dust storage chamber 152 along with the air due to the suction force of the suction source 116, while allowing air to pass through.

[0016] As shown in Fig. 2, a dust discharge port 124 for discharging dust accumulated in the dust storage chamber 152 is formed in the portion of the housing 111 that forms the dust storage chamber 152 so as to communicate with the dust storage chamber 152. In order to open and close the dust discharge port 124, a substantially rectangular lid 121 is attached to the housing 111 so as to be able to rotate up and down. Note that the lid 121 shown in Fig. 2 is in an open position that opens the dust discharge port 124, and the lid 121 shown in Fig. 1 is in a closed position that closes the dust discharge port 124. The lid 121 is biased to the closed position so as to close the dust discharge port 124 when no external force is acting on the lid 121.

[0017] 1, filter 172 is a flat sheet-like member that is configured to allow air to pass from dust storage chamber 152 to drive chamber 153, while having holes large enough to capture dust contained in the air. The dust captured by filter 172 is stored in dust storage chamber 152.

[0018] The filter 172 extends obliquely upward from a position above the lid 121 and the dust outlet 124 inside the housing 111. That is, the filter 172 is not placed in a right-angled position perpendicular to the axial direction of the housing 111 (i.e., the up-down direction), but is placed in the housing 111 in an inclined position that is inclined from this right-angled position.

[0019] As shown in FIG. 1, the upper end of dust storage chamber 152 is defined by filter 172, while the lower end of dust storage chamber 152 is defined by check valve 114 attached to the upper end of suction pipe 113. Check valve 114 shown in FIG. 1 is in a closed position that closes the opening at the upper end of suction pipe 113. When suction source 116 generates an upward suction force, check valve 114 rotates upward from the position shown in FIG. 1 to an open position that opens the opening at the upper end of suction pipe 113. The upper end of suction pipe 113 is inclined obliquely so that its front portion is lower and its rear portion is higher. Therefore, when check valve 114 is in the closed position, it closes the upper end of suction pipe 113 in an obliquely inclined position.

[0020] Suction tube 113 extends in the vertical direction, and the lower end of suction tube 113 is attached to suction nozzle 130. The connection portion between suction tube 113 and suction nozzle 130 is configured to allow suction tube 113, housing 111, and grip portion 140 to tilt backward from the upright position shown in FIG.

[0021] When suction tube 113, housing 111, and grip portion 140 are in the upright position shown in Fig. 1, the lower end of suction tube 113 is in contact with bottom portion 134 of nozzle case 132. That is, when vacuum cleaner body 110 is in the upright position, the lower end of suction tube 113 is closed by bottom portion 134 of nozzle case 132. When vacuum cleaner body 110 is tilted backward from the upright position, the lower end of suction tube 113 moves in the direction shown by arrow A in Fig. 1. As a result, the flow path of suction tube 113 is in communication with suction space 131 of nozzle case 132.

[0022] (Explanation of the operation of the vacuum cleaner during cleaning work) During cleaning work, the user holds the vacuum cleaner 100 in a position where the vacuum cleaner body 110 and the grip part 140 are tilted backward relative to the suction nozzle 130. By tilting the vacuum cleaner body 110 and the grip part 140 backward relative to the suction nozzle 130, it becomes easier to move the suction nozzle 130 forward while pushing it. In this state, the flow path of the suction tube 113 communicates with the suction space 131 of the suction nozzle 130.

[0023] When the user then operates the operating unit 141 to activate the suction source 116, the suction source 116 generates an upward suction force. This suction force causes the check valve 114 to bend upward, thereby opening the upper end of the suction tube 113.

[0024] When the upper end of suction pipe 113 is opened, the suction force of suction source 116 generates a suction airflow that sucks in dust through suction space 131 of suction nozzle 130. The suction airflow passes through suction nozzle 130 and suction pipe 113 and flows into dust storage chamber 152. Dust on the floor surface is carried by this suction airflow and flows into dust storage chamber 152. This dust is captured by filter 172 and retained within dust storage chamber 152. Note that while suction source 116 is operating, most of the dust that has flowed into dust storage chamber 152 is adsorbed to the lower surface of filter 172 by the suction force of suction source 116.

[0025] When the cleaning work is completed, the user operates operating unit 141 to stop suction source 116. As a result, the suction force of suction source 116 is lost, and the dust attracted to the lower surface of filter 172 falls from the lower surface of filter 172. Furthermore, as the suction force of suction source 116 disappears, check valve 114 returns to its original position and closes the upper end of suction pipe 113. Therefore, the dust that has fallen from filter 172 does not fall into suction pipe 113.

[0026] Thereafter, when the user places lid 121 in the open position, dust discharge port 124 is opened. Then, the dust inside dust storage chamber 152 is discharged from dust storage chamber 152 through dust discharge port 124. At this time, the user may attach to dust discharge port 124 a collection device (not shown) configured to generate a suction force to suck out the dust inside dust storage chamber 152. Alternatively, the user may hold housing 111 so that dust discharge port 124 faces downward, and use gravity to discharge the dust inside dust storage chamber 152.

[0027] In vacuum cleaner 100 shown in FIG. 1, filter 172 is arranged inside housing 111 not in a right-angled position that is perpendicular to the axial direction (i.e., the up-down direction) of housing 111, but in an inclined position that is inclined from this right-angled position. If filter 172 is arranged inside housing 111 in a right-angled position, the area of ​​filter 172 will be approximately equal to the cross-sectional area of ​​the internal space of housing 111. On the other hand, if filter 172 is arranged in an inclined position, the area of ​​filter 172 will be larger than the cross-sectional area of ​​the internal space of housing 111. This prevents filter 172 from becoming clogged as a whole.

[0028] The filter 172 shown in FIG. 1 is in the form of a flat sheet. However, as shown in FIG. 3, the filter 172 may be bent so as to form ridges 178 extending in the front-rear direction. In this case, the area of ​​the filter 172 increases by the amount of the ridges 178 formed. Note that although the ridges 178 extend in the front-rear direction in FIG. 3, they may extend in other directions. For example, the filter 172 may be bent so as to form ridges 178 extending in the left-right direction.

[0029] In order to increase the area of ​​filter 172, filter 172 may have a curved shape that is convex toward drive chamber 153 or dust storage chamber 152, as shown in Figures 4 and 5. In this case, the area of ​​filter 172 increases by the amount of curvature of filter 172. Note that although filter 172 has a curved shape in side view in Figures 4 and 5, it may also have a curved shape in front view.

[0030] In vacuum cleaner 100 shown in FIG. 1 , the corner formed between the front wall of housing 111 and the lower end (front end) of filter 172 on the dust storage chamber 152 side is an obtuse angle. Dust at such an obtuse-angled corner is likely to fall when suction source 116 is stopped. On the other hand, the corner formed between the rear wall of housing 111 and the upper end (rear end) of filter 172 on the dust storage chamber 152 side is an acute angle. Dust that has entered such an acute-angled corner is pinched between the rear wall of housing 111 and filter 172 and is therefore unlikely to fall, even after suction source 116 is stopped. In this case, it may be difficult to discharge the dust through dust outlet 124.

[0031] To encourage dust to fall from corners formed on the dust storage chamber 152 side by filter 172 and housing 111, filter 172 may have a bent shape as shown in FIG. 6. That is, filter 172 shown in FIG. 6 has an inclined portion 176 that is inclined upward so as to form an obtuse angle toward the dust storage chamber 152 side between filter 172 and the front wall portion of housing 111, and a bent portion 177 that is bent relative to inclined portion 176. Bent portion 177 is connected to the rear wall portion of housing 111 at a position closer to a right angle than inclined portion 176. Therefore, the angle of the corner between bent portion 177 on the dust storage chamber 152 side and the rear wall portion of housing 111 is larger than the angle of the corner between the rear end portion of filter 172 and the rear wall portion of housing 111 in FIG. 1. Therefore, dust is likely to fall from the corners of dust storage chamber 152 after suction source 116 is stopped.

[0032] (Second embodiment) The vacuum cleaner 100 of the first embodiment has a single filter 172. Alternatively, the vacuum cleaner 100 may further have another filter 171 (hereinafter referred to as the "primary filter 171") arranged at a position spaced apart from the filter 172 on the dust storage chamber 152 side, as shown in Fig. 7. The primary filter 171 has larger meshes than the filter 172 (hereinafter referred to as the "secondary filter 172"), and can capture relatively large particles of dust that have flowed into the dust storage chamber 152.

[0033] The primary filter 171 is disposed in a position substantially parallel to the secondary filter 172. The space formed between the primary filter 171 and the secondary filter 172 (hereinafter referred to as "dust storage space 173") is lower on the front side and higher on the rear side. That is, the dust storage space 173 extends obliquely upward from the front end portion in the front-rear direction.

[0034] When suction source 116 is activated, dust and air flow into dust storage chamber 152, and larger particles of the dust that flow into dust storage chamber 152 are captured by primary filter 171. On the other hand, dust smaller than the mesh of primary filter 171 passes through primary filter 171 and flows into dust storage space 173. This dust is then captured by secondary filter 172.

[0035] When suction source 116 is stopped, the dust trapped by primary filter 171 falls to the bottom of dust storage chamber 152, and the dust trapped by secondary filter 172 falls onto the inner surface (upper surface) of primary filter 171 that faces secondary filter 172. The dust that has fallen onto primary filter 171 moves downward (i.e., forward) according to the inclination of primary filter 171 (i.e., the inclination of dust storage space 173).

[0036] Furthermore, dust that has fallen from primary filter 171 is received by check valve 114 that defines the lower end of dust storage chamber 152. Check valve 114 is inclined so that the front portion is lower than the rear portion, and therefore dust that has fallen onto check valve 114 moves downward (i.e., toward the front) according to the inclination of check valve 114. Therefore, not only the dust in dust storage space 173 but also the dust in dust storage chamber 152 becomes unevenly distributed toward the front in the internal space of housing 111.

[0037] When suction source 116 is activated again without the dust being discharged from dust storage chamber 152, the dust in dust storage chamber 152 and dust storage space 173 moves upward due to the suction force of suction source 116. As described above, this dust moves upward from a state in which it is unevenly distributed at the front, and is therefore adsorbed to primary filter 171 and secondary filter 172 in a state in which it is concentrated in the front portions of these filters, but less dust is adsorbed to the rear portions of primary filter 171 and secondary filter 172. This prevents clogging in the rear portions of primary filter 171 and secondary filter 172. In other words, clogging of the entire primary filter 171 and secondary filter 172 is less likely to occur.

[0038] The larger the dust storage space 173 between the primary filter 171 and the secondary filter 172, the greater the amount of dust that can be stored in the dust storage space 173. Furthermore, if the amount of dust that can be stored in the dust storage space 173 increases, the frequency of work to remove dust from the dust storage space 173 can be reduced. To increase the dust storage space 173, the secondary filter 172 may be curved so as to bulge toward the drive chamber 153, as shown in FIG. 8. Alternatively, the primary filter 171 may be curved so as to bulge toward the dust storage chamber 152, as shown in FIG. 9. Alternatively, both the primary filter 171 and the secondary filter 172 may be curved toward the dust storage chamber 152 and the drive chamber 153, respectively. The secondary filter 172 shown in FIG. 8 and the primary filter 171 shown in FIG. 9 have a curved shape in a side view. Alternatively, the primary filter 171 and the secondary filter 172 may have a curved cross-sectional shape in a front view.

[0039] 7, when suction source 116 is stopped, dust in dust storage space 173 moves downward (forward) according to the inclination of dust storage space 173. To prevent such movement of dust from being impeded by primary filter 171 and secondary filter 172, primary filter 171 and secondary filter 172 may be arranged such that the distance between them becomes wider as they go downward (forward), as shown in FIG.

[0040] 10, primary filter 171 is disposed at a steeper slope than secondary filter 172. Therefore, when suction source 116 is stopped, dust that has fallen from secondary filter 172 above primary filter 171 can move downward (forward) with force due to the steep slope of the inner surface of primary filter 171.

[0041] When primary filter 171 is provided closer to dust storage chamber 152 than secondary filter 172, the momentum of the upward flowing dust is weakened by primary filter 171. For this reason, the momentum of dust flowing toward a corner formed between secondary filter 172 and housing 111 on the dust storage space 173 side is not as strong as the momentum of dust flowing toward a corner formed between primary filter 171 and housing 111 on the dust storage chamber 152 side. On the other hand, dust may flow with force into a corner formed between primary filter 171 and housing 111 on the dust storage chamber 152 side. In order to encourage dust to fall from this corner, a bent shape of secondary filter 172 shown in FIG. 6 may be adopted for primary filter 171.

[0042] The secondary filter 172 has finer mesh than the primary filter 171, and is therefore more susceptible to clogging than the primary filter 171. For this reason, the secondary filter 172 may have a larger area than the primary filter 171. For example, while the primary filter 171 is in the form of a flat sheet, the secondary filter 172 may have a bent shape so as to form ridges 178, as shown in FIG.

[0043] In the vacuum cleaner 100 of the first and second embodiments, the vacuum cleaner body 110 and the grip part 140 are tilted rearward from the upright position. Note that the vacuum cleaner 100 may be configured such that the vacuum cleaner body 110 and the grip part 140 are tiltable forward from the upright position.

[0044] In the vacuum cleaner 100 of the first and second embodiments, the cover 121 is configured to be rotatable in the vertical direction relative to the housing 111. Alternatively, the cover 121 may be configured to be rotatable in the horizontal direction relative to the housing 111, or may be configured to slide on the housing 111 to open the dust outlet 124.

[0045] The vacuum cleaner 100 of the first and second embodiments is a stick type. Alternatively, the vacuum cleaner 100 may be an upright type vacuum cleaner, a canister type vacuum cleaner, or a handheld type vacuum cleaner.

[0046] (Effects, etc.) The vacuum cleaner 100 according to the above embodiment has the following features and provides the following effects.

[0047] A vacuum cleaner according to one aspect of the above-described embodiments includes a housing extending in a predetermined axial direction, a suction source disposed within the housing and configured to generate a suction force for sucking in dust, a drive chamber containing the suction source, a dust storage chamber into which dust sucked by the suction force of the suction source and air flow, and a filter that divides the internal space of the housing into a drive chamber containing the suction source and a dust storage chamber into which dust and air sucked in by the suction force of the suction source flow, the filter having holes sized to allow air to pass from the dust storage chamber to the drive chamber while retaining dust contained in the air in the dust storage chamber. The filter is disposed within the housing in an inclined position that is inclined from a right-angle position perpendicular to the axial direction of the housing.

[0048] In the above-described configuration, when the suction source is activated, the suction force of the suction source causes dust-laden air to flow into the dust storage chamber. The air passes through the filter, while the dust is trapped in the dust storage chamber by the filter. While the dust can clog the filter, the filter is tilted from a perpendicular position perpendicular to the axial direction of the housing, so it has a larger surface area than if the filter were positioned at a right angle. This makes it less likely that the entire filter will become clogged.

[0049] In the above-described configuration, the filter may be folded so that ridges are formed on the surface of the filter.

[0050] In the above-described configuration, the filter is bent to form ridges on the surface of the filter, so the area of ​​the filter is larger by the amount of the ridges compared to a filter with a flat surface, making it less likely for the entire filter to become clogged.

[0051] In the above-described configuration, the filter may have a curved shape toward the drive chamber side or the dust storage chamber side.

[0052] In the above-described configuration, the filter has a curved shape toward the drive chamber side or the dust storage chamber side, so the filter area is larger by the amount of curvature compared to a filter with a flat surface, and therefore the entire filter is less likely to become clogged.

[0053] In the above-described configuration, the filter may have, on the dust storage chamber side, an inclined portion that is inclined so as to form an obtuse angle with the housing, and a bent portion that is bent with respect to the inclined portion so as to assume an orientation closer to a right angle than the inclined portion, and is connected to the housing on the side opposite to the connection portion between the housing and the inclined portion.

[0054] In the above-described configuration, some of the air and dust that flows into the dust storage chamber can flow toward the corner formed between the inclined portion and the housing on the dust storage chamber side and the corner formed between the bent portion and the housing on the dust storage chamber side. Because the corner formed between the inclined portion and the housing on the dust storage chamber side has an obtuse angle, when the suction source stops and the suction force is lost, the dust can fall from this corner without being pinched between the inclined portion and the housing.

[0055] The angle of the corner formed between the bent portion and the housing on the dust storage chamber side can be somewhat large because the bent portion is closer to a right angle than the inclined portion, so dust that reaches this corner can fall from the corner when the suction source is stopped without being pinched between the bent portion and the housing.

[0056] In the above-described configuration, the vacuum cleaner may further include another filter that is disposed at a position closer to the dust storage chamber than the filter and has larger meshes than the filter. The filter may have a curved shape that is convex toward the drive chamber.

[0057] In the above-described configuration, dust particles that flow into the dust storage chamber and are larger than the mesh size of the other filters are trapped by the other filters and are less likely to reach the other filters. This reduces clogging of the filters. Dust particles that are smaller than the mesh size of the other filters pass through the other filters but are trapped by the other filters and may accumulate between the other filters. In this case, because the filters are curved so as to convexly face the drive chamber, the space between the other filters is wide, allowing more dust to accumulate between the filters.

[0058] In the above-described configuration, the vacuum cleaner may further include another filter that is disposed at a position closer to the dust storage chamber than the filter and has larger meshes than the filter. The other filter may have a curved shape that is convex toward the dust storage chamber.

[0059] In the above-described configuration, dust particles that flow into the dust storage chamber and are larger than the mesh size of the other filters are captured by the other filters and are less likely to reach the other filters. This prevents the filters from clogging. Dust particles that are smaller than the other filters pass through the other filters but are captured by the other filters and may accumulate between the other filters. Because the other filters are curved so that they are convex toward the dust storage chamber, the space between the other filters is wide, allowing more dust to be stored between the filters.

[0060] In the above-described configuration, the vacuum cleaner may further include another filter that is located closer to the dust storage chamber than the filter and has larger mesh than the filter. A space is formed between the filter and the other filter in which dust that passes through the other filter but is captured by the filter is stored, and the space may be inclined to allow dust to move toward one end of the filter and the other filter when the suction source is stopped.

[0061] In the above-described configuration, while the suction source is operating, dust that passes through the other filters is attracted to the filter by the suction force of the suction source. However, when the suction source is stopped, the dust can detach from the filter. This dust can move toward one end of the filter and the other filters according to the inclination of the filter and the other filters. That is, the dust can be concentrated toward one end of the filter and the other filters, with less dust on the other end. Therefore, even if the suction source is restarted in this state, the other end of the filter and the other filters is less likely to be blocked by dust in the space between them. In other words, when the suction source is restarted, dust in the space between the filter and the other filters is prevented from completely blocking the filter meshes.

[0062] In the above-described configuration, the filter and the other filter may be arranged such that the distance between the filter and the other filter increases downward.

[0063] In the above-described configuration, dust in the space between the filter and the other filters moves downward (i.e., toward one end of the space) due to the action of gravity. At this time, since the gap between the filter and the other filters increases toward the bottom, the downward movement of dust in the space between the filter and the other filters is not easily impeded by these filters. [Industrial Applicability]

[0064] The vacuum cleaner of the above-described embodiment is suitably used as a device for cleaning work. [Explanation of symbols]

[0065] 100·········vacuum cleaner 111···········Housing 116...Suction source 152···························dust storage room 153 Drive compartment 171··········· Filter (1st order filter) 172··········· Filter (second-order filter) 173... Dust storage space (space) 176... Slope section 177 Bend 178････････････････････････････････････････

Claims

1. a housing extending in a predetermined axial direction; a suction source disposed within the housing and configured to generate a suction force for sucking dust; a filter that divides the internal space of the housing into a drive chamber that houses the suction source and a dust storage chamber into which dust and air sucked by the suction force of the suction source flow, and that has holes of a size that allows air to pass from the dust storage chamber to the drive chamber while retaining dust contained in the air in the dust storage chamber; The filter is disposed in the housing in an inclined position that is inclined from a right-angle position perpendicular to an axial direction of the housing.

2. 2. The vacuum cleaner of claim 1, wherein the filter is folded to form ridges on a surface of the filter.

3. The vacuum cleaner according to claim 1 , wherein the filter has a shape curved toward the drive chamber side or the dust storage chamber side.

4. The filter is an inclined portion inclined on the dust storage chamber side so as to form an obtuse angle with the housing; The vacuum cleaner of claim 1, further comprising a bent portion that is bent relative to the inclined portion so as to assume a posture closer to the right-angle posture than the inclined portion, and that is connected to the housing on the opposite side to the connection portion between the housing and the inclined portion.

5. The dust collecting device further includes another filter that is disposed at a position separated from the filter on the dust storage chamber side and has larger mesh than the filter, The vacuum cleaner according to claim 1 , wherein the filter has a curved shape that is convex toward the drive chamber.

6. The dust collecting device further includes another filter that is disposed at a position separated from the filter on the dust storage chamber side and has larger mesh than the filter, The vacuum cleaner according to claim 1 , wherein the other filter has a curved shape that is convex toward the dust storage chamber.

7. The dust collecting device further includes another filter that is disposed at a position separated from the filter on the dust storage chamber side and has larger mesh than the filter, 2. The vacuum cleaner of claim 1, wherein a space is formed between the filter and the other filter in which dust that passes through the other filter and is captured by the filter is stored, and the space is inclined to allow dust to move toward one end of the filter and the other filter when the suction source is stopped.

8. The vacuum cleaner according to claim 7 , wherein the filter and the other filter are arranged such that the distance between the filter and the other filter increases downward.

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