Vacuum cleaner

Abstract

To realize a cleaning tool of a vacuum cleaner capable of suppressing deterioration of rotation performance of a rotor.SOLUTION: A cleaning tool 40 includes: an inlet opening 62 to be an inlet of dust; a rotation cleaning body 46 having a cleaning body 200; a drive part 210 where an output-side pulley 214 is provided in a rotation shaft of a motor 210a; a driven-side pulley 216 to which a belt 212 is wound around together with the output-side pulley 214; a first drive-side bearing part 202z comprising a ball bearing for receiving a shaft part 202k which supports the driven-side pulley 216; and a drive-side bearing holding part 202p for holding the first drive-side bearing part 202z.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vacuum cleaner. [Background technology]

[0002] Conventionally, as disclosed in JP 2010-51711 A, in a vacuum cleaner head having a rotating body having multiple brushes, a motor for rotating the rotating body, and a head in which the rotation of the motor is transmitted to the rotating body by a belt, the head has a belt hung between a roller provided on the motor shaft and a rotating support. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-51711 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional technology described above, the brush bearing that rotatably supports the rotating support rotates relative to the rotating shaft, so dust is likely to accumulate in the gap between the brush bearing and the rotating shaft, which could affect the rotational performance of the rotating body.

[0005] SUMMARY OF THE PRESENT DISCLOSURE In view of the above, an object of the present invention is to provide a cleaning tool for a vacuum cleaner that is capable of suppressing a decrease in the rotation performance of a rotor. [Means for solving the problem]

[0006] The cleaning tool provided to solve the above-mentioned problems is characterized by comprising an inlet opening for dust to enter, a rotating cleaning body having a cleaning body, a drive unit in which an output side pulley is provided on the rotating shaft of a motor, a driven side pulley around which a belt is hung together with the output side pulley, a first driven side bearing portion consisting of a ball bearing that receives the shaft portion on which the driven side pulley is supported, and a driven side bearing holding portion that holds the first driven side bearing portion.

[0007] The cleaning tool of the present invention uses, as a support structure for rotatably supporting the driven pulley, a first driven bearing for receiving a shaft to which the driven pulley is fixed, which is provided and held by a driven bearing holder. This reduces the possibility of the cleaning body's rotational performance being reduced due to dust adhering to the support structure that rotatably supports the cleaning body, as compared to the prior art. Effect of the Invention

[0008] According to the present invention, it is possible to realize a cleaning tool for a vacuum cleaner that is capable of suppressing deterioration in the rotation performance of a rotor. [Brief description of the drawings]

[0009] [Figure 1] 1 is a perspective view showing a vacuum cleaner, a cleaning tool, a vacuum cleaner support device, and a vacuum cleaner system according to an embodiment of the present invention; [Diagram 2] 2 is an enlarged cross-sectional view of a main part of the vacuum cleaner shown in FIG. 1. [Diagram 3] 2 is an enlarged perspective view of the main part of the vacuum cleaner shown in FIG. 1, as viewed from the front. FIG. [Figure 4] 2 is an enlarged right side view of a main part of the vacuum cleaner shown in FIG. 1. [Diagram 5] 2 is an enlarged perspective view of the main parts of the vacuum cleaner shown in FIG. 1 with a cover removed, as viewed from the rear side. FIG. [Figure 6] 2 is a plan view showing the cleaning tool in FIG. 1 with the upper case removed. FIG. [Figure 7]2 is a plan view showing the cleaning tool in FIG. 1 with the upper case removed. FIG. [Figure 8] FIG. 8 is an enlarged view of a main part of FIG. [Figure 9] 2(a) and 2(b) are exploded perspective views showing a rotating cleaning body and a cleaning body drive mechanism provided in the cleaning tool shown in FIG. 1, respectively. [Figure 10] 2(a) and 2(b) are exploded perspective views showing a cleaning element drive mechanism included in the cleaning tool shown in FIG. 1. [Figure 11] 2(a) and 2(b) are plan views showing a rotating cleaning body and a cleaning body drive mechanism provided in the cleaning tool shown in FIG. 1, respectively. [Figure 12] 2 is an enlarged right side view of a main part of the vacuum cleaner system shown in FIG. 1. [Figure 13] 2 is an enlarged perspective view of a main part of the vacuum cleaner system shown in FIG. 1, as viewed from the front. [Figure 14] 1 is a perspective view showing a vacuum cleaner support device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, a vacuum cleaner 1 according to one embodiment of the present invention and a vacuum cleaner system S including the same will be described in detail with reference to the drawings. In the following description, the overall configuration of the vacuum cleaner 1 and the vacuum cleaner system S will be briefly described first, and then the main parts will be described in more detail. In the following description, unless otherwise specified, the positional relationships in the up-down direction, front-rear direction, width direction, etc. will be described based on the state in which the vacuum cleaner 1 is erected as shown in FIG.

[0011] <<Overall configuration of the vacuum cleaner 1 and the vacuum cleaner system S>> 1, the vacuum cleaner system S includes a vacuum cleaner 1 and a vacuum cleaner support device 120. Note that, although the vacuum cleaner system S of this embodiment is illustrated as including the vacuum cleaner support device 120, the vacuum cleaner system S may not include the vacuum cleaner support device 120.

[0012] As shown in Fig. 1, the electric vacuum cleaner 1 is a vacuum cleaner having a stick-shaped (vertical) appearance. The electric vacuum cleaner 1 can be, for example, a vacuum cleaner that obtains power from an external power source via a power cord, but in this embodiment, it is a rechargeable type. As shown in Fig. 1, the electric vacuum cleaner 1 includes a vacuum cleaner body 10, a dust collecting section 20, a tube section 30, and a cleaning tool 40 (suction tool).

[0013] As shown in Fig. 1 and Fig. 2, the vacuum cleaner body 10 forms the main body of the electric vacuum cleaner 1 and is a part that exerts a suction force to perform a function of collecting dust. Specifically, the vacuum cleaner body 10 is provided with an electric blower 70, a battery 80, a control unit 90, and other parts inside a main body part 12 (main body case) that forms a housing, as described in detail later. Also, as shown in Figs. 1 to 5, the vacuum cleaner body 10 is provided with a handle part 100 on the outside of the main body part 12. The vacuum cleaner body 10 also has a suction port 14 on the lower side in the up-down direction. The suction port 14 is capable of connecting a tube part 30 and a cleaning tool 40.

[0014] The electric blower 70 is for sucking in air and generating an airflow. The battery 80 is electrically connected to the electric blower 70. The battery 80 is for supplying power to the electric blower 70 and other electrical components of the vacuum cleaner 1. The control unit 90 is for controlling the operation of the vacuum cleaner 1. The control unit 90 is for controlling the operation of the vacuum cleaner 1 by, for example, controlling the supply of power to the electrical components such as the electric blower 70.

[0015] The handle portion 100 is for a user of the vacuum cleaner 1 to grip. The handle portion 100 is a rod-shaped portion provided on the upper side of the main body portion 12 in the vertical direction so as to continue in the longitudinal direction (vertical direction) of the vacuum cleaner body 10. An operating portion 106 is provided near the handle portion 100. The operating portion 106 is for operating the vacuum cleaner 1, for example, for turning the power on and off.

[0016] The dust collection unit 20 is a portion where dust sucked by the vacuum cleaner 1 is collected. The dust collection unit 20 is provided so as to be continuous with the vacuum cleaner body 10. The dust collection unit 20 communicates with the inside and outside of the vacuum cleaner body 10 via a suction port 14 provided on the lower end side of the vacuum cleaner body 10.

[0017] The vacuum cleaner 1 and vacuum cleaner system S of this embodiment are generally configured as described above. The vacuum cleaner 1 and vacuum cleaner system S have various features, such as the configuration of the handle unit 100, the layout of the handle unit 100, the configuration of the cleaning tool 40, the configuration of the cleaner support device 120, and the operation control by the control unit 90. Below, the characteristic configurations of the vacuum cleaner 1 and vacuum cleaner system S will be described in more detail.

[0018] <Configuration of the handle portion 100> As shown in Figs. 1 to 5, the handle portion 100 is provided on the upper side of the main body portion 12 in the up-down direction. The handle portion 100 is rod-shaped. One end side (base end) of the handle portion 100 is continuous with the main body portion 12, and the other end side (tip end) is a free end. The handle portion 100 is formed so as to extend from a position on the front side in the front-to-rear direction of the main body portion 12. The handle portion 100 is bent at a bending position 102 that is located midway from the base end to the tip end. The handle portion 100 extends from the bending position 102 toward the rear side of the main body portion 12.

[0019] The handle portion 100 has a rear surface portion 100a which forms the rear side portion in the front-rear direction, and a front surface portion 100b which forms the front side portion. In the rear surface portion 100a and the front surface portion 100b, a rear surface bent portion 102a and a front surface bent portion 102b are provided at positions corresponding to the bent position 102. The rear surface bent portion 102a and the front surface bent portion 102b are curved with a predetermined curvature, respectively, and are in a positional relationship offset in the direction of the radius of curvature. In addition, in the front surface portion 100b, a portion located opposite (offset) the rear surface bent portion 102a in the front-rear direction is a flat surface 104. The flat surface 104 is a plane that extends along the up-down direction. An operation unit 106 is provided on the flat surface 104. The operation unit 106 has buttons arranged thereon for performing operations such as power operation of the vacuum cleaner 1 and switching of operation modes.

[0020] <<Layout of the handle part 100>> Next, the layout of the handle unit 100 will be described. The handle unit 100 is also characterized by its layout relative to the electric blower 70 and battery 80 provided inside the vacuum cleaner body 10. Below, the internal structure of the vacuum cleaner body 10 will be roughly described, and then the layout of the handle unit 100 will be described.

[0021] 2, the vacuum cleaner main body 10 has an electric blower 70, a battery 80, a control unit 90, etc., stored in a hollow main body portion 12 forming a housing. The main body portion 12 has an electric blower storage portion 22, a battery storage portion 24, a dust collection portion forming portion 26, and a board storage portion 28. The battery storage portion 24 may be provided separately from the main body portion 12.

[0022] The electric blower storage section 22 is provided on the upper side of the vacuum cleaner body 10 with respect to the dust-collection section component 26. An electric blower 70 is attached to the electric blower storage section 22 so as to generate an airflow that flows from the suction port 14 provided on the lower end side of the vacuum cleaner body 10 into the dust-collection section 26. The battery storage section 24 is provided at a position adjacent to the electric blower storage section 22 on the rear side in the front-to-rear direction.

[0023] The battery storage section 24 has an opening 24a provided on the top surface side of the vacuum cleaner body 10, which can be opened and closed by a lid 24b. The battery storage section 24 is configured such that the battery 80 can be inserted and removed in the vertical direction through the opening 24a by removing the lid 24b. The opening 24a is located opposite the handle unit 100 in the vertical direction. An opening surface 24c forming the opening 24a is formed substantially horizontally in the front-to-rear direction as shown in FIG. 5 and the like. Note that the opening surface 24c can also be inclined so as to move away from the handle unit 100 as it moves from the front side to the rear side in the front-to-rear direction. This can reduce interference with the handle unit 100 when removing the battery 80.

[0024] The dust-collecting part component 26 is a part that constitutes the dust-collecting part 20. The dust-collecting part component 26 is provided at a position adjacent to the electric blower storage part 22 on the lower side in the up-down direction. The dust-collecting part component 26 communicates with the suction port 14. Here, the dust-collecting part 20 can be constituted by a so-called cyclone-type dust collector or the like (a configuration in which a pipe having the suction port 14 and the dust-collecting part component 26 are arranged in the front-rear direction of the vacuum cleaner body 10), but in this embodiment, it is a so-called paper bag type. Therefore, the dust-collecting part component 26 is provided so that a connection part 26a for attaching a paper bag communicates with the suction port 14. Therefore, the dust-collecting part 20 can be formed by storing a paper bag connected to the connection part 26a in the dust-collecting part component 26.

[0025] The board accommodating section 28 is a section that accommodates a board that constitutes the control section 90. In this embodiment, the space above the electric blower storage section 22 serves as the board accommodating section 28. The board that constitutes the control section 90 is arranged along a plane perpendicular to the rotation axis of the electric blower 70. In addition, the operation control section that controls the operation section 106 is arranged along the portion that forms the flat surface 104 in the front surface section 100b that constitutes the handle section 100.

[0026] The handle section 100 is provided so as to have a layout as shown in FIG. 2 based on the electric blower 70, the battery 80, the control section 90, and the like that are assembled to the main body section 12 as described above. Specifically, the handle section 100 is arranged so as to overlap at least a part of the battery 80 when viewed from the top-bottom direction. In this embodiment, when the electric vacuum cleaner 1 is viewed from the top-bottom direction, the layout is such that the tip side (free end side) of the handle section 100 overlaps with the battery 80 (battery storage section 24). Also, when the electric vacuum cleaner 1 is viewed from the top-bottom direction, the layout is such that one end (base end side) of the handle section 100 that is connected to the main body section 12 overlaps with the electric blower 70. Furthermore, the one end (base end side) of the handle section 100 that is connected to the main body section 12 is located forward of the central axis L of the electric blower 70 in the front-rear direction. The other end (free end) of the handle portion 100 is located rearward of the central axis L of the electric blower 70 in the front-rear direction.

[0027] <Configuration of cleaning tool 40> Next, the configuration of the cleaning tool 40 will be described in detail with reference to Figs. 6 to 11, etc. The cleaning tool 40 is for taking in dust from the outside, and is capable of sucking in air and dust from the outside by the suction force of an electric blower 70. As shown in Figs. 6, 7, etc., the cleaning tool 40 has a cleaning tool main body 42 (main body) and a joint part 44. The cleaning tool 40 also has a rotating cleaning body 46 and a cleaning body drive part 48 (drive part) inside the cleaning tool main body 42.

[0028] The cleaning tool main body 42 is the part that is placed on the floor during cleaning, and has a shape that is long in the left-right direction compared to the front-rear direction in which the user moves during cleaning. As shown in FIG. 6 etc., the cleaning tool main body 42 has a rotating cleaning body placement section 60, an entrance opening 62, and a storage section 66.

[0029] The rotating cleaning body 46 is disposed in the rotating cleaning body mounting portion 60. The rotating cleaning body mounting portion 60 extends in the left-right direction of the cleaning tool main body 42, and has a hollow space capable of housing the rotating cleaning body 46.

[0030] The inlet opening 62 is an opening for taking in dust on the bottom side of the cleaning tool main body 42. In this embodiment, the rotating cleaning element placement section 60 is provided in the space in which the inlet opening 62 is formed.

[0031] 6, the storage section 66 is for storing the drive unit 210 constituting the cleaning element drive unit 48 described in detail below, wiring for supplying power to the drive unit 210, and the like. The storage section 66 is capable of arranging the drive unit 210 and wiring at a position away from the path through which dust passes. In this embodiment, the storage section 66 is provided so as to be aligned with the rotating cleaning element arrangement section 60 in the front-rear direction (rearward of the rotating cleaning element arrangement section 60).

[0032] The joint part 44 is provided in a position on the above-mentioned cleaning tool main body 42 that is on the back side (rear side) of the vacuum cleaner 1 so as to communicate with the communication part 45. The joint part 44 is attached to the cleaning tool main body 42 so as to be rotatable within a predetermined rotation range (at least one of the front-rear direction and the left-right direction). The joint part 44 is a part to which the pipe part 30 is connected. The joint part 44 is cylindrical, and communicates with the communication part 45 at its base end. In addition, the negative pressure of the electric blower 70 acts on the small hole of the communication part 45, so that the air taken in by the cleaning tool main body 42 from the air intake passes through the inside of the drive part 210 and flows into the small hole of the communication part 45.

[0033] 6 and 7, the rotating cleaning body 46 is a cylindrical member housed in and rotatably supported in the rotating cleaning body mounting portion 60. The rotating cleaning body 46 receives power from a cleaning body drive portion 48, which will be described in detail later, and is rotatable in the rotating cleaning body mounting portion 60. The rotating cleaning body 46 has a cleaning body 200 extending in the longitudinal direction (left-right direction) of the cleaning tool main body 42, and an attachment portion 202.

[0034] The mounting portion 202 is a portion used for mounting the rotating cleaning body 46 to the cleaning tool main body 42. The rotating cleaning body 46 is supported rotatably relative to the cleaning tool main body 42 by mounting the mounting portions 202, 202 provided on both ends (hereinafter, the two may be distinguished as "mounting portion 202a" and "mounting portion 202b" as necessary) to predetermined mounting positions provided within the cleaning tool main body 42.

[0035] On the other hand, as shown in Fig. 9, the attachment portion 202b supports the other axial end side (opposite to the attachment portion 202a) of the rotating cleaning body 46. The attachment portion 202b is provided with a first attachment body 202x that can be connected to a second attachment body 202y, which will be described later. The first attachment body 202x is fixed to an end of the cleaning body 200. The second attachment body 202y is connected to a driven pulley 216, which will be described later, and is disposed on the cleaning tool main body 42 (lower case 42a) side. The first attachment body 202x and the second attachment body 202y are connectable and separable in the axial direction.

[0036] The first mounting body 202x includes an engaged portion 202e and a first flange portion 202i. The engaged portion 202e is formed in a concave shape on the end surface of the first mounting body 202x. The shape of the engaged portion 202e may be any shape as long as it is configured to be locked in the rotational direction, but in this embodiment, it is cross-shaped. The engaged portion 202e is a portion into which an engaging portion 202j of the second mounting body 202y described later can be fitted and engaged. The first flange portion 202i is provided at an end portion (the end portion on the second mounting body 202y side) of the first mounting body 202x so as to bulge outward in the radial direction.

[0037] As shown in FIG. 8 and FIG. 9, the second attachment body 202y has an engagement portion 202j and a shaft portion 202k. The engagement portion 202j protrudes in the axial direction at the end of the second attachment body 202y and is capable of engaging with the above-mentioned engaged portion 202e. The shape of the engagement portion 202j may be any shape, but in this embodiment, it is a cross shape like the engaged portion 202e. The shaft portion 202k is a shaft provided at the axial center position of the second attachment body 202y. The shaft portion 202k is inserted from one side to the other side of the plate-shaped support portion 220 provided on the cleaning tool main body 42. The shaft portion 202k is a shaft to which the driven side pulley 216 is fixed. The shaft portion 202k is configured as a part of the second attachment body 202y, but the part that configures the shaft portion 202k may be configured as a member separate from the second attachment body 202y including the engagement portion 202j and the like. The shaft portion 202k extends in the direction of the rotation axis with the portion where the engaging portion 202j is provided as the base end, and the driven pulley 216 is fixed to the axial middle portion of the shaft portion 202k. Therefore, when the driven pulley 216 is taken as a reference, the engaging portion 202j forming the second attachment body 202y is located on one side in the axial direction (the base end side). The shaft portion 202k is inserted into the axial center position of the driven pulley 216 of the cleaning body driving unit 48 described later, and is rotatable integrally with the driven pulley 216. Therefore, the rotating cleaning body 46 is rotatable in conjunction with the driven pulley 216 in a state where the first attachment body 202x provided on one end side is connected to the second attachment body 202y.

[0038] The shaft portion 202k is supported by a first bearing portion 202z (first driven-side bearing portion) at the tip side so as to be rotatable. The first bearing portion 202z is formed of a ball bearing. The shaft portion 202k is rotatable with respect to the outer ring of the first bearing portion 202z together with the inner ring of the first bearing portion 202z. The first bearing portion 202z is fitted into a hole provided in a plate-shaped driven-side bearing holder 202p (driven-side bearing holder) that is rectangular (square in this embodiment) when viewed from the front, and the outer ring is held non-rotatably by the driven-side bearing holder 202p. As shown in FIG. 6 and FIG. 8, the driven-side bearing holder 202p is inserted into a slit-shaped insertion portion 202m provided in the lower case 42a, so that the rotating cleaning body 46 can be stably supported.

[0039] The cleaning tool 40 is provided with a cleaning element drive unit 48, so that the rotating cleaning element 46 is driven by power output from the cleaning element drive unit 48. As shown in Fig. 6 to Fig. 10, the cleaning element drive unit 48 includes a drive unit 210, a belt 212, an output side structure DM including an output side pulley 214, a driven side structure DS including a driven side pulley 216, etc.

[0040] The driven side structure DS transmits the power of the driving unit 210 to the rotating body. The driven side structure DS has a shaft portion 202k, a driven side pulley 216, a guide portion 250 (driven side guide portions 270, 272), an engagement portion 202j, a stop member 282, a first bearing portion 202z (first driven side bearing portion), a driven side bearing holding portion 202p, a second bearing portion 225 (second driven side bearing portion), and a support portion 220. The driven side structure DS is arranged such that the engagement portion 202j, the driven side pulley 216, and the guide portion 250 (driven side guide portions 270, 272) are arranged in this order. The driven side structure DS is also arranged such that the engagement portion 202j, the driven side pulley 216, and the first bearing portion 202z are arranged in this order. Further, in the driven side structure DS, the driven side pulley 216 and the guide portion 250 (driven side guide portions 270, 272) are disposed between the second bearing portion 225 and the first bearing portion 202z.

[0041] The driving unit 210 is composed of a motor 210a provided in the cleaning tool main body 42, an output pulley 214, and the like. The driving unit 210 is configured such that the output pulley 214 is provided on the rotating shaft of the motor 210a. The driving unit 210 is disposed in a storage section 66 provided on the rear side further than the rotating cleaning body 46. The belt 212 is composed of an endless belt with teeth. The belt 212 is stretched around the output pulley 214 and the driven pulley 216.

[0042] The output side pulley 214 is a pulley connected to the output shaft (rotating shaft) of the driving unit 210. The output side pulley 214 is configured as a toothed pulley having teeth extending in the axial direction on the periphery around which the belt 212 is hung. The output side pulley 214 is rotatably supported at the tip end by the output side bearing portion 214z. The output side bearing portion 214z has a configuration similar to that of the first bearing portion 202z described above. The output side bearing portion 214z is configured by a ball bearing. The output shaft of the driving unit 210 is rotatable with respect to the outer ring of the output side bearing portion 214z together with the inner ring of the output side bearing portion 214z. The output side bearing portion 214z is fitted into a hole provided in a plate-shaped output side bearing holder 214p that is rectangular (square in this embodiment) when viewed from the front, and the outer ring is held non-rotatably by the output side bearing holder 214p. As shown in FIGS. 6 and 8, the output-side bearing holding portion 214p is inserted into a slit-shaped insertion portion 202n provided in the lower case 42a, and is thereby held relative to the lower case 42a.

[0043] The driven pulley 216 is a toothed pulley constituting the mounting portion 202b. The driven pulley 216 is a pulley that is rotatable integrally with the shaft portion 202k of the second mounting body 202y described above. The driven pulley 216 is configured by a toothed pulley having teeth extending in the axial direction on a circumferential portion around which the belt 212 is wound.

[0044] The cleaning body drive unit 48 is configured by looping a belt 212 made of an endless belt between the output side structure DM and the driven side structure DS. Therefore, by operating the drive unit 210, the rotational power can be transmitted to the attachment part 202b side, and the rotating cleaning body 46 can be rotated within the space of the cleaning tool main body 42.

[0045] As shown in Figs. 6 to 9, each member constituting the cleaning body drive unit 48 is supported by a support portion 220. The support portion 220 is erected in an area of ​​the cleaning tool main body 42 on the side where the second attachment body 202y is attached. In other words, the support portion 220 is arranged side by side with the rotary cleaning body 46 in the axial direction of the rotary cleaning body 46. The support portion 220 is a plate-like member extending along the arrangement direction of the rotary cleaning body 46 and the drive unit 210. An output side pulley 214, a driven side pulley 216, and a belt 212 are arranged on the opposite side of the support portion 220 to the rotary cleaning body 46.

[0046] The cleaning element driving unit 48 also includes a guide portion 250. The output side structure DM has guide portions 250 formed on both sides in the direction of the rotation axis so as to protrude radially from the periphery, and the driven side structure DS has guide portions 250 formed on both sides in the direction of the rotation axis so as to protrude radially from the periphery. Hereinafter, of the guide portions 250, those in the output side structure DM will also be referred to as output side guide portions 260, 262, and those in the driven side structure DS will also be referred to as driven side guide portions 270, 272.

[0047] The output side guide parts 260 and 262 are respectively arranged on one side and the other side of the output side pulley 214 in the rotation axis direction. At least one of the output side guide parts 260 and 262 is made of a member separate from the output side pulley 214. In this embodiment, the output side guide part 260 arranged on the side of the output side pulley 214 on the base end side (motor 210a side) of the output shaft of the drive part 210 is integrally formed with the output side pulley 214. On the other hand, the output side guide part 262 arranged on the side of the output side pulley 214 on the tip side (output side bearing part 214z side) of the output shaft of the drive part 210 is made of a member (separate body) separate from the output side pulley 214. The output side guide part 262 is a disc-shaped member having a larger diameter than the circumferential part of the output side pulley 214.

[0048] The output side guide portion 262 has an insertion hole 264 at approximately the center, through which the output shaft of the drive unit 210 can be inserted. Therefore, by inserting the output shaft of the drive unit 210 through both the insertion hole 264 formed across the output side guide portion 260 and the output side pulley 214 at the axial center position of the output side pulley 214 and the insertion hole 266 formed in the center of the output side guide portion 262, the output side guide portions 260, 262 are journaled on the output shaft of the drive unit 210 together with the output side pulley 214.

[0049] The driven-side guide portions 270 and 272 are disposed on one side and the other side of the driven-side pulley 216 in the rotation axis direction, respectively. At least one of the driven-side guide portions 270 and 272 is configured by a member separate from the driven-side pulley 216. In this embodiment, the driven-side guide portion 270 disposed on the side of the base end side (rotating cleaning body 46 side) of the shaft portion 202k of the second attachment body 202y among the sides of the driven-side pulley 216 is formed integrally with the driven-side pulley 216. On the other hand, the driven-side guide portion 272 disposed on the side of the tip end side (first bearing portion 202z side) of the shaft portion 202k among the sides of the driven-side pulley 216 is configured by a member (separate body) separate from the driven-side pulley 216. The driven-side guide portion 272 is a disc-shaped member having a larger diameter than the circumferential portion of the driven-side pulley 216.

[0050] The driven-side guide portion 272 has an insertion hole 274 in the approximate center through which the shaft portion 202k can be inserted. Therefore, by inserting the shaft portion 202k through both the insertion hole 274 formed in the driven-side pulley 216 at the axial center position of the driven-side pulley 216 and the insertion hole 276 formed in the center portion of the driven-side guide portion 272, the driven-side guide portions 270 and 272 are supported by the shaft portion 202k together with the driven-side pulley 216. In this way, the driven-side guide portion 272 supports the driven-side pulley 216 from the side, so that the rotation stability of the driven-side pulley 216 can be improved. In addition, the driven-side guide portion 272 supports the belt 212 from the side, so that the belt 212 can be prevented from coming off.

[0051] Here, the overall configuration of the cleaning body driving part 48 formed by combining the above-mentioned components will be described in more detail. An insertion hole 274 opening in a substantially oval shape is provided at the axial center position of the driven side pulley 216. Also, an insertion hole 276 opening in a substantially oval shape similar to the insertion hole 274 is provided at the center of the driven side guide part 272. The shaft part 202k of the second attachment body 202y is a shaft body having a substantially oval external shape similar to the insertion holes 274 and 276. Also, the support part 220 is provided with a shaft support part 220c that rotatably supports (supports) the second attachment body 202y. The shaft support part 220c is provided with a second bearing part 225 (second driven side bearing part) that rotatably supports the shaft part 202k by inserting it therethrough. That is, the second bearing part 225 is supported by the support part 220. The second bearing portion 225 is disposed on the opposite side of the driven-side guide portions 270 and 272 with respect to the driven-side pulley 216. Furthermore, the shaft portion 202k is rotatably supported at the tip side by the first bearing portion 202z. Therefore, the second attachment body 202y is fixed to the driven-side pulley 216 in a state in which the shaft portion 202k is inserted through the second bearing portion 225 provided on the shaft support portion 220c of the support portion 220, the insertion holes 274 and 276 provided on the driven-side pulley 216 and the driven-side guide portion 272, and the first bearing portion 202z. A disc-shaped retaining member having a larger diameter than the inner ring of the first bearing portion 202z is fixed by a screw 280 to the end portion of the shaft portion 202k inserted into the first bearing portion 202z, thereby preventing the shaft portion 202k from being removed from the first bearing portion 202z. Because of this configuration, by connecting the first attachment body 202x provided on the rotary cleaning body 46 side to the second attachment body 202y, the rotary cleaning body 46 becomes rotatable in conjunction with the driven pulley 216. For this reason, the second attachment body 202y can also be expressed as being included as a part of the driven pulley 216.

[0052] The support part 220 is provided at a position on the front side of the cleaning tool main body 42 with a shaft support part 220c that rotatably supports (supports) the second attachment body 202y provided at the end of the rotary cleaning body 46. The support part 220 is provided at a position on the rear side of the cleaning tool main body 42 with a receiving part 220d that is cut out so as to be able to support the driving part 210. Specifically, the driving part 210 has an output shaft provided in the motor 210a that constitutes the motor, a driving machine main body 210a1 that constitutes the majority of the motor, and a bulging part 210a2 that has a smaller diameter than the driving machine main body 210a1 and bulges in the axial direction. The output shaft is provided in the bulging part 210a2.

[0053] The receiving portion 220d is formed to extend downward from the upper end of the support portion 220. Therefore, when the driving portion 210 is assembled with the output shaft inserted through the output side pulley 214, the output side guide portion 262, and the output side bearing portion 214z, the bulging portion 210a2 is slid along the receiving portion 220d. As a result, the output side pulley 214, the output side guide portion 262, and the output side bearing portion 214z are supported in this order in the axial direction relative to the output shaft of the driving portion 210. In addition, a disk-shaped retaining member 290 having a larger diameter than the inner ring of the output side bearing portion 214z is fixed by a screw 292 to the end portion of the output shaft of the driving portion 210 inserted through the output side bearing portion 214z, thereby preventing the output shaft of the driving portion 210 from being removed from the output side bearing portion 214z.

[0054] If the above-mentioned assembling work is performed in a state where the belt 212 is stretched between the output pulley 214 and the driven pulley 216, the tension of the belt 212 will not make it difficult to put it on, and the work can be performed more easily. In addition, the support part 220, the drive part 210, the belt 212, the output pulley 214, the second mounting body 202y, the second bearing part 225, the driven pulley 216, the first bearing part 202z, the driven bearing holder 202p, the output bearing part 214z, the output bearing holder 214p, the output guide part 262, and the driven guide part 272 are unitized and integrally configured, so that the cleaning body drive part 48 can be easily assembled into the lower case 42a. In addition, as shown in FIG. 10(a), a screw hole 222e is provided on the receiving part 220d side of the support part 220 to screw the end part of the drive machine main body 210a1. It is preferable that the second attachment body 202y has a flat contact surface facing the support portion 220. This can improve the rotation stability of the driven pulley 216. The output side guide portion 260 may be a separate member (a separate body) from the output side pulley 214, and the driven side guide portion 270 may be a separate member (a separate body) from the driven side pulley 216.

[0055] <Configuration of the vacuum cleaner support device 120> 1 and 12 to 14, the vacuum cleaner support device 120 supports the vacuum cleaner 1 in a state in which the vacuum cleaner body 10 and the cleaning tool 40 are connected via a tube part 30. As shown in FIG.

[0056] The mounting portion 130 is a portion that serves as a base for mounting the cleaning tool 40, and has a mounting surface that is inclined so as to become lower from the support portion 140 (described later) toward the front side. The mounting portion 130 also has a stopper 132 on the front side. The stopper 132 is formed so as to protrude upward from the top surface side of the mounting portion 130. The stopper 132 is also formed so as to extend in the width direction of the mounting portion 130. Therefore, the stopper 132 can be positioned so that the cleaning tool 40 arranged on the top surface of the mounting portion 130 does not move beyond the stopper 132 toward the front side.

[0057] The support part 140 is a support-shaped part that is erected in the vertical direction on the back side (the side opposite to the stopper 132) of the mounting part 130. The support part 140 is a part that engages with and supports the pipe part 30 connected to the cleaning tool 40 arranged on the mounting part 130. Specifically, the support part 140 can support the pipe part 30 by engaging the receiving part 32 provided on the pipe part 30 with the engaging part 142 provided on the upper end side.

[0058] Specifically, the receiving portion 32 is a portion provided so as to bulge on the rear side of the pipe portion 30. The receiving portion 32 is adapted to be able to engage with the support portion 140 of the vacuum cleaner support device 120 to form an engagement structure. The receiving portion 32 is hollow and has an opening 32a that is open toward one side in the pipe axial direction (the side connected to the cleaning tool 40) and the rear side. Meanwhile, the engagement portion 142 of the support portion 140 is formed with a recess so that it can be inserted from above into the opening 32a of the receiving portion 32 of the pipe portion 30. In addition, the support portion 140 is provided with a protrusion 144 that protrudes from the inside of the recess of the engagement portion 142, and the receiving portion 32 is inserted into the engagement portion 142 from above downward to form an engagement structure by the receiving portion 32 and the engagement portion 142. As a result, the support portion 140 can support the pipe portion 30 in an engaged state. In this embodiment, a configuration in which the receiving portion 32 is provided on the pipe portion 30 has been described as an example, but it is sufficient for the pipe portion 30 to have an engagement structure that hooks the pipe portion 30 from above the engagement structure of the support portion 140. For example, the pipe portion 30 may be provided with a hook extending downward (toward the cleaning tool 40), and the hook may be inserted into a recess in the engagement portion 142 of the support portion 140.

[0059] Moreover, the support portion 140 has a first support portion 150, a second support portion 152, and a third support portion 154. The first support portion 150, the second support portion 152, and the third support portion 154 are arranged separately in the up-down direction of the support portion 140, respectively.

[0060] Specifically, the first support component 150 is a portion forming the region on the upper and lower end sides of the support portion 140. The first support component 150 is provided with the above-mentioned engagement portion 142. Therefore, the first support component 150 functions as a portion forming an engagement structure with the pipe portion 30.

[0061] The second support component 152 is a portion that forms an area on the lower end side (the mounting portion 130 side) of the support portion 140. A front surface 152a of the second support component 152 is located further rearward in the front-to-rear direction than a front surface 152a of the first support component 150 and the surface of the first support component.

[0062] The third support pillar component 154 is a portion located between the first support pillar component 150 and the second support pillar component 152 in the up-down direction. The third support pillar component 154 has a recess 156 on the front surface 154a side. The recess 156 is formed so as to be recessed rearward from the front surface 150a of the first support pillar component 150 and the front surface 152a of the second support pillar component 152.

[0063] Specifically, the front surface 154a of the third support component 154 has three surfaces, a first connection surface 154b, a second connection surface 154c, and a flat surface 154d. The first connection surface 154b is a curved surface, a bent surface, or an inclined surface (a curved surface in this embodiment) formed so as to continue to the front surface 150a of the first support component 150. The second connection surface 154c is a curved surface, a bent surface, or an inclined surface (a curved surface in this embodiment) formed so as to continue to the front surface 152a of the second support component 152. The flat surface 154d is a flat surface provided between the first connection surface 154b and the second connection surface 154c in the vertical direction. The first connection surface 154b and the second connection surface 154c can be curved with the same curvature, but in this embodiment, the curvature of the second connection surface 154c is a curved surface smaller than that of the first connection surface 154b. This allows the cleaning tool 40 to be placed on the placement surface of the placement portion 130 while preventing the rear end 47 of the cleaning tool 40 from getting caught on the second connecting surface 154c.

[0064] <Operation control by the control unit 90> The control unit 90 can perform operation control (duty control) of the electric blower 70 based on the duty ratio. The control unit 90 can set the duty ratio according to the communication state between the vacuum cleaner body 10 and the cleaning tool 40. Specifically, the control unit 90 can set the duty ratio according to whether the vacuum cleaner body 10 and the cleaning tool 40 are directly or indirectly connected. Here, the control unit 90 can grasp the connection state between the vacuum cleaner body 10 and the cleaning tool 40 by making the direct or indirect connection between the vacuum cleaner body 10 and the cleaning tool 40 electrically detectable, by allowing the user to appropriately set it using various switches, by providing a switch that can be physically turned on and off when the vacuum cleaner body 10 and the cleaning tool 40 are directly connected or indirectly connected via the tube unit 30, by providing sensors for detecting the connection, and the like.

[0065] The control unit 90 sets the duty ratio (communication duty ratio D1) set on the condition that the cleaner body 10 and the cleaning tool 40 are in communication with each other to be higher than the duty ratio (disconnection duty ratio D2) set on the condition that they are in a non-communication state (D1>D2). This makes it possible to increase the output of the electric blower 70 when the cleaner body 10 and the cleaning tool 40 are in communication with each other and high suction power is required.

[0066] In addition, when the electric vacuum cleaner 1 is capable of selecting a plurality of operation modes with different suction power, it is preferable that the control unit 90 controls the output of the electric blower 70 so that an appropriate suction power can be exerted according to the operation mode. Specifically, for example, the electric vacuum cleaner 1 can be operated in a selectable manner from a plurality of operation modes, such as an operation mode (standard mode) for cleaning with standard suction power, an operation mode (save mode) in which power consumption is reduced by reducing the suction power compared to the standard mode, and an operation mode (turbo mode) for cleaning with a suction power higher than that in the standard mode. In this case, the control unit 90 controls the output of the electric blower 70 so that an appropriate suction power can be exerted according to the selected operation mode.

[0067] Here, as described above, when operation in a plurality of operation modes with different suction powers is possible, it is preferable to set the duty ratio according to the communication state between the vacuum cleaner body 10 and the cleaning tool 40 while maintaining the magnitude relationship of the suction power when the first operation mode is selected and when the second operation mode with a higher suction power is selected. Specifically, for example, when the above-mentioned save mode is compared with the standard mode, it is preferable to control the communication duty ratio D1 when operating in the standard mode to be larger than the communication duty ratio D1 when operating in the save mode. Also, it is preferable to control the non-communication duty ratio D2 when operating in the standard mode to be larger than the non-communication duty ratio D2 when operating in the save mode. Similarly, when comparing operation in standard mode with operation in turbo mode, it is advisable to control so that the communication duty ratio D1 when operating in turbo mode is greater than the communication duty ratio D1 when operating in standard mode, and the non-communication duty ratio D2 when operating in turbo mode is greater than the non-communication duty ratio D2 when operating in standard mode.

[0068] The control unit 90 may include an operation unit for setting an operation mode of the vacuum cleaner 1. Specifically, the control unit 90 may include a first operation unit 92 for setting a first operation mode, and a second operation unit 94 for setting a second operation mode.

[0069] <Effects obtained by the vacuum cleaner 1, the cleaning tool 40, the vacuum cleaner support device 120, and the vacuum cleaner system S> Hereinafter, the effects and the like obtained by the above-mentioned vacuum cleaner 1, cleaning tool 40, and vacuum cleaner system S will be described for each aspect of the present invention.

[0070] [Regarding the vacuum cleaner 1 according to the first aspect of the present invention] Conventionally, as disclosed in Japanese Utility Model Publication No. 59-27063, there has been provided an electric vacuum cleaner having a tip opening to which a suction mouth body can be attached and detached, and having a rod-shaped handle with a built-in battery attached to a vacuum cleaner body having an internal fan motor that generates suction force.

[0071] In the above-mentioned conventional vacuum cleaners, the handle extends straight backward from the main body of the vacuum cleaner. Therefore, the conventional vacuum cleaners have a problem that the handle is difficult to grip when the tip opening or the suction mouth body is placed against the floor surface, and operability is poor.

[0072] Therefore, an object of the present invention is to realize a vacuum cleaner that is easy to grip and easy to operate.

[0073] (1-1) The electric vacuum cleaner 1 provided to solve the above-mentioned problems comprises a main body 12 having an electric blower 70 therein that generates suction force and a suction port 14 on the lower side in the vertical direction, a dust collection section 20 that collects dust, and a handle section 100 provided on the upper side of the main body 12 in the vertical direction, the handle section 100 being rod-shaped bent at a bending position 102 provided midway and extending from the front side of the main body 12 in the front-to-rear direction perpendicular to the vertical direction, and extending from the bending position 102 toward the rear side of the main body 12.

[0074] In the vacuum cleaner 1, a rod-shaped handle portion 100 is provided on the upper side of the main body portion 12 so as to extend from the front side of the main body portion 12, bend at a bending position 102, and extend toward the rear side of the main body portion 12. Therefore, the vacuum cleaner 1 is easy for the user to grip the handle portion 100 when cleaning, and is highly maneuverable.

[0075] (1-2) In the above-described electric vacuum cleaner 1, an operation unit 106 for controlling the operation of the electric blower 70 is disposed on the side of the handle unit 100 that is connected to the main body unit 12.

[0076] This makes it easier for the user to change the position at which the handle portion 100 is held in order to operate the operation unit 106 and to move the vacuum cleaner 1 by holding the handle portion 100. Furthermore, by configuring the vacuum cleaner 1 as in (1-2), it is possible to prevent the user from erroneously operating the operation unit 106 when moving the vacuum cleaner 1 by holding the handle portion 100.

[0077] (1-3) The electric vacuum cleaner 1 of (1-2) described above is characterized in that the handle portion 100 has a flat surface 104 extending in the vertical direction, and the operating portion 106 is disposed on the flat surface 104.

[0078] By configuring the vacuum cleaner 1 as in (1-3), the operation unit 106 becomes even easier to operate.

[0079] (1-4) The above-mentioned (1-2) vacuum cleaner 1 is characterized in that the handle portion 100 has a front portion 100b that forms the front surface in the front-to-rear direction and a rear portion 100a that forms the rear surface in the front-to-rear direction, the rear portion 100a has a rear bent portion 102a that is bent at a bending position 102, the front portion 100b has a flat surface 104 at a position opposite the rear bent portion 102a in the front-to-rear direction, and the flat surface 104 has an operating portion 106.

[0080] The vacuum cleaner 1 having the above configuration (1-4) makes it easier for the user to change the position at which he holds the handle unit 100 between operating the operation unit 106 and holding the handle unit 100 to move the vacuum cleaner 1. Furthermore, the vacuum cleaner 1 having the configuration (1-4) can more reliably prevent the user from erroneously operating the operation unit 106 when holding the handle unit 100 to move the vacuum cleaner 1.

[0081] (1-5) The electric vacuum cleaner 1 of the above (1-1) to (1-4) is characterized in that the main body 12 has the battery 80 on the rear side in the front-rear direction.

[0082] By configuring the vacuum cleaner 1 as in (1-5), the battery 80, which is a heavy object, is located lower than in a configuration in which the battery 80 is provided inside the handle portion 100. Therefore, by configuring the vacuum cleaner 1 as in (1-5), the center of gravity can be set lower. This makes the vacuum cleaner 1 easier to handle when moving it for cleaning.

[0083] (1-6) The electric vacuum cleaner 1 of (1-5) above is characterized in that the battery 80 and the handle portion 100 at least partially overlap each other when viewed from above and below.

[0084] By configuring the vacuum cleaner 1 as described above in (1-6), it is possible to hold the vacuum cleaner 1 at a position above the center of gravity of the battery 80, which is a heavy object. This makes it easy to handle the vacuum cleaner 1 when moving it for cleaning.

[0085] (1-7) In the above-mentioned (1-5) or (1-6) electric vacuum cleaner 1, the battery 80 is removably accommodated in the battery storage section 24 provided in the main body 12, the battery storage section 24 has an opening 24a, through which the battery 80 can be inserted, located opposite the handle section 100 in the vertical direction, and the opening 24a has an opening surface 24c that slopes away from the handle section 100 as it moves from the front to the rear in the front-to-rear direction.

[0086] By configuring the vacuum cleaner 1 as described above in (1-7), the battery 80 can be easily attached to and detached from the battery housing portion 24.

[0087] (1-8) The electric vacuum cleaner 1 of (1-1) to (1-7) described above is characterized in that one end of the handle portion 100 that is connected to the main body portion 12 overlaps with the electric blower 70 when viewed from the top-bottom direction.

[0088] By configuring the vacuum cleaner 1 as described above in (1-8), it is possible to hold the vacuum cleaner 1 at a position above the center of gravity of the heavy electric blower 70. This makes it easy to handle the vacuum cleaner 1 when moving it for cleaning.

[0089] (1-9) The electric vacuum cleaner 1 of (1-1) to (1-8) described above is characterized in that one end of the handle portion 100 that is connected to the main body portion 12 is located forward of the central axis of the electric blower 70 in the front-to-rear direction.

[0090] By configuring the vacuum cleaner 1 as described above in (1-9), it is possible to hold the vacuum cleaner 1 in a position directly above the heavy electric blower 70. This makes it easy to handle the vacuum cleaner 1 when moving it for cleaning.

[0091] [Regarding the cleaning tool 40 according to the second aspect of the present invention] Conventionally, as disclosed in JP 2010-51711 A, there has been provided a vacuum cleaner head that includes a rotor having multiple brushes, a motor for rotating the rotor, and a belt for transmitting the rotation of the motor to the rotor, in which the belt is hung between a roller attached to the motor shaft and a rotating support.

[0092] However, the above-mentioned prior art has a problem in that the belt may become dislodged from the roller or rotating support.

[0093] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a cleaning tool for a vacuum cleaner that makes it difficult for the belt to come off the pulley.

[0094] (2-1) The cleaning tool 40 provided to solve the above-mentioned problems comprises an inlet opening 62 which is an inlet for dust, a rotating cleaning body 46 having a cleaning body 200, a drive unit 210 having an output side pulley 214 attached to the rotating shaft of a motor 210a, and a driven side structure DS which transmits the power of the drive unit 210 to the rotating cleaning body 46, and a belt 212 is stretched around a driven side pulley 216 provided on the driven side structure DS and the output side pulley 214. The driven side structure DS has a circumferential portion on which the belt 212 is stretched on the driven side pulley 216, and has a guide portion 250 (driven side guide portions 270, 272) which protrudes radially from the circumferential portion on at least one side in the axial direction of the driven side pulley 216.

[0095] The cleaning tool 40 has a guide portion 250 (driven side guide portions 270, 272) that protrudes radially from the periphery on at least one side in the axial direction with respect to the driven side pulley 216 provided in the driven side structure DS. The guide portion 250 also protrudes radially from the periphery of the driven side pulley 216. Therefore, in the cleaning tool 40, the belt 212 that is wound around the periphery of the driven side pulley 216 is unlikely to come off.

[0096] (2-2) In the above-described cleaning tool 40, the guide portion 250 is a separate member from the driven pulley 216.

[0097] With such a configuration, the cleaning tool 40 of the vacuum cleaner 1 of this embodiment can perform the task of arranging the separate member driven-side guide portion 272 after the belt 212 is hung on the driven-side pulley 216. Furthermore, when removing the belt 212 from the driven-side pulley 216, the cleaning tool 40 of the vacuum cleaner 1 of this embodiment can remove the belt 212 in a state in which the separate member driven-side guide portion 272 is removed, which is the opposite to the case of hanging the belt 212. Therefore, the cleaning tool 40 of the vacuum cleaner 1 of this embodiment can easily hang and remove the belt 212 from the driven-side pulley 216 while being configured to have the guide portion 250 that protrudes radially from the circumferential portion on one side of the rotation axis direction with respect to the circumferential portion.

[0098] (2-3) In the cleaning tool 40 of (2-1) or (2-2) described above, the guide portion 250 is supported by the shaft portion 202k on which the driven pulley 216 is supported.

[0099] By adopting such a configuration, the cleaning tool 40 of the vacuum cleaner 1 of this embodiment can be configured to have a guide portion 250 (in this embodiment, the driven-side guide portion 272) disposed relative to the driven-side pulley 216 in the axial direction of the shaft portion 202k to which the driven-side pulley 216 is fixed. As a result, the cleaning tool 40 of the vacuum cleaner 1 of this embodiment can position the driven-side guide portion 272 with high positional accuracy relative to the driven-side pulley 216. Therefore, the cleaning tool 40 of the vacuum cleaner 1 of this embodiment can reliably position the driven-side guide portion 272 at an appropriate position to prevent the belt 212 from coming off the pulley. Note that when the driven-side guide portion 270 is a separate member from the driven-side pulley 216, the driven-side guide portion 270 may be fixed to the shaft portion 202k.

[0100] (2-4) In the cleaning tool 40 described above in (2-3), the driven pulley 216 and the guide portion 250 are prevented from coming off the shaft portion 202k.

[0101] The cleaning tool 40 is configured as described above so that the driven pulley 216 and the guide portion 250 do not move in the axial direction of the shaft portion 202k. Therefore, the cleaning tool 40 is unlikely to cause the driven pulley 216 and the guide portion 250 to shift position in both the axial direction of the shaft portion 202k and the direction intersecting the axial direction, and the driven pulley 216 is unlikely to tilt. Therefore, the cleaning tool 40 is unlikely to cause the belt 212 to come off the driven pulley 216.

[0102] (2-5) The cleaning tool 40 of (2-3) or (2-4) described above is characterized in that a stopper member 282 is fixed to the end of the shaft portion 202k on the guide portion 250 side with respect to the driven pulley 216.

[0103] By configuring the cleaning tool 40 as described above, the driven pulley 216 and the guide portion 250 can be positioned by the retaining member 282 so as not to move in the axial direction of the shaft portion 202k. Therefore, in the cleaning tool 40, the driven pulley 216 and the guide portion 250 are unlikely to shift in position in both the axial direction of the shaft portion 202k and the direction intersecting the axial direction, and the driven pulley 216 is unlikely to tilt. Therefore, in the cleaning tool 40, the belt 212 is unlikely to come off the driven pulley 216.

[0104] (2-6) In the cleaning tool 40 described above in (2-1) to (2-5), the driven side structure DS has an engagement portion 202j that detachably engages with the axial end portion of the rotating cleaning body 46, and is characterized in that the engagement portion 202j, the driven side pulley 216, and the guide portion 250 (the driven side guide portion 272) are arranged in this order.

[0105] The above-described configuration of the cleaning tool 40 makes it easy to engage and disengage the rotating cleaning body 46. Furthermore, the above-described configuration of the cleaning tool 40 makes it possible to prevent the rotating cleaning body 46 from coming off the guide portion 250 (the driven-side guide portion 272) on the side opposite to the engaging portion 202j, where the rotating cleaning body 46 is engaged and disengaged, via the driven-side pulley 216.

[0106] (2-7) In the cleaning tool 40 described above in (2-3) to (2-5), the driven side structure DS is characterized in having a first bearing portion 202z arranged on the guide portion 250 side of the shaft portion 202k with respect to the driven side pulley 216, and a driven side bearing holding portion 202p that supports the first bearing portion 202z.

[0107] The cleaning tool 40 has a support structure for rotatably supporting the driven pulley 216, in which a first bearing portion 202z for receiving the shaft portion 202k to which the driven pulley 216 is fixed is held by a driven bearing holder 202p. This allows the cleaning tool 40 to support the shaft portion 202k smoothly and rotatably.

[0108] (2-8) In the cleaning tool 40 of (2-7) described above, the driven side structure DS has a second bearing portion 225 arranged on the opposite side of the guide portion 250 with respect to the driven side pulley 216 as a reference, and is characterized in that it is equipped with a support portion 220 that supports the driven side structure DS at the second bearing portion 225, and the driven side pulley 216 and the guide portion 250 are arranged between the second bearing portion 225 and the first bearing portion 202z.

[0109] The cleaning tool 40, by being configured as described above, can support the shaft portion 202k without tilting between the second bearing portion 225 and the first bearing portion 202z. Furthermore, the cleaning tool 40 has the driven pulley 216 and the guide portion 250 between the second bearing portion 225 and the first bearing portion 202z. Therefore, in the cleaning tool 40, the belt 212 is less likely to come off the driven pulley 216.

[0110] [Regarding the cleaning tool 40 according to the third aspect of the present invention] Conventionally, as disclosed in JP 2010-51711 A, in a vacuum cleaner head having a rotating body having multiple brushes, a motor for rotating the rotating body, and a head in which the rotation of the motor is transmitted to the rotating body by a belt, the head has a belt hung between a roller provided on the motor shaft and a rotating support.

[0111] However, in the conventional technology described above, the brush bearing that rotatably supports the rotating support rotates relative to the rotating shaft, so dust is likely to accumulate in the gap between the brush bearing and the rotating shaft, which could affect the rotational performance of the rotating body.

[0112] SUMMARY OF THE PRESENT DISCLOSURE In view of the above, an object of the present invention is to provide a cleaning tool for a vacuum cleaner that is capable of suppressing a decrease in the rotation performance of a rotor.

[0113] (3-1) The cleaning tool 40 provided to solve the above-mentioned problems is characterized by comprising an inlet opening 62 which is an inlet for dust, a rotating cleaning body 46 having a cleaning body 200, a drive unit 210 in which an output side pulley 214 is provided on the rotating shaft of a motor 210a, a driven side pulley 216 around which a belt 212 is hung together with the output side pulley 214, a first driven side bearing portion 202z consisting of a ball bearing which receives the shaft portion 202k on which the driven side pulley 216 is supported, and a driven side bearing holding portion 202p which holds the first driven side bearing portion 202z.

[0114] The cleaning tool 40 uses a first driven side bearing portion 202z for receiving the shaft portion 202k to which the driven side pulley 216 is fixed, which is provided and held by the driven side bearing holder 202p, as a support structure for rotatably supporting the driven side pulley 216. This makes it possible for the cleaning tool 40 to reduce the possibility of the rotation performance of the cleaning body 200 being reduced due to dust adhering to the support structure that rotatably supports the cleaning body 200, as compared to the prior art.

[0115] (3-2) The above-mentioned cleaning tool 40 is characterized in that it has an engagement portion 202j that detachably engages with the axial end portion of the rotating cleaning body 46, and the engagement portion 202j, the driven side pulley 216, and the first driven side bearing portion 202z are arranged in this order.

[0116] The above-described configuration of the cleaning tool 40 allows the engagement and disengagement of the rotating cleaning body 46 at the engagement portion 202j. Furthermore, the above-described configuration of the cleaning tool 40 allows the first driven-side bearing portion 202z to be disposed on the opposite side, across the driven-side pulley 216, from the engagement portion 202j where the engagement and disengagement of the rotating cleaning body 46 is performed, thereby reducing the possibility of the rotational performance of the cleaning body 200 being reduced due to dust adhering to the first driven-side bearing portion 202z, as compared to the prior art.

[0117] (3-3) The cleaning tool 40 of (3-1) or (3-2) described above is characterized in that it has a second driven side bearing portion 225 that receives the shaft portion 202k, and is equipped with a support portion 220 that supports the second driven side bearing portion 225.

[0118] Since the cleaning tool 40 is configured as described above, the second driven side bearing 225 is supported by the support part 220, and the inner ring of the second driven side bearing 225 rotates together with the shaft part 202k. Therefore, the cleaning tool 40 can reduce the possibility of the rotation performance of the cleaning body 200 being deteriorated due to dust adhering to the support structure that rotatably supports the cleaning body 200, as compared to the conventional technology.

[0119] (3-4) The cleaning tool 40 described above in (3-1) to (3-3) is characterized in that the end of the shaft portion 202k on the first driven side bearing portion 202z side is prevented from coming off with respect to the driven side pulley 216.

[0120] By configuring the cleaning tool 40 as described above, the driven pulley 216 is positioned so that it does not move toward the first driven bearing portion 202z along the axial direction of the shaft portion 202k. Therefore, in the cleaning tool 40, the driven pulley 216 is unlikely to shift position in either the axial direction of the shaft portion 202k or the direction intersecting the axial direction, and the driven pulley 216 is unlikely to tilt. Therefore, in the cleaning tool 40 of the vacuum cleaner 1 of this embodiment, the belt 212 is unlikely to come off the driven pulley 216.

[0121] (3-5) The cleaning tool 40 of (3-1) to (3-4) described above is characterized in that it includes an output side bearing portion 214z that receives the rotating shaft of the motor 210a and an output side bearing holding portion 214p that holds the output side bearing portion 214z, and the driven side bearing holding portion 202p and the output side bearing holding portion 214p are integrally configured.

[0122] By configuring the cleaning tool 40 as described above, the motor 210a, the output side bearing portion 214z, the output side bearing holder 214p, and the driven side bearing holder 202p can be integrally assembled.

[0123] [Regarding the vacuum cleaner support device 120 according to the fourth aspect of the present invention] Conventionally, as disclosed in JP 2021-107004 A, there is a vacuum cleaner support device that supports an electric vacuum cleaner to which a vacuum cleaner main body, an extension tube, and a suction tool are connected. The support pole of this vacuum cleaner support device is adapted to support the electric vacuum cleaner by engaging with the extension tube.

[0124] Here, in the conventional technology described above, the rear end of the suction tool can sometimes interfere with the front side of the support pole, so there was a need to provide a vacuum cleaner support device that was configured to make it easier to engage the extension tube with the vacuum cleaner support device.

[0125] SUMMARY OF THE PRESENT EMBODIMENTS An object of the present invention is to provide a vacuum cleaner support device and a vacuum cleaner set that allow easy engagement of a tube portion of a vacuum cleaner.

[0126] (4-1) The vacuum cleaner support device 120 provided to solve the above-mentioned problems supports an electric vacuum cleaner 1 including a vacuum cleaner body 10 having an electric blower 70, a cleaning tool 40 having a suction port 14 for sucking dust, and a tube section 30 connecting the vacuum cleaner body 10 and the cleaning tool 40, in a state in which the vacuum cleaner body 10, the tube section 30, and the cleaning tool 40 are connected, and includes a mounting section 130 for mounting the cleaning tool 40, and a support section 140 erected on the mounting section 130 and engaging with the tube section 30, and the support section 140 is rearwardly supported by the tube section 30. The support portion 140 has a first pillar component 150 located on the upper side and forming an engaging structure with the pipe portion 30, a second pillar component 152 forming the lower end side of the support portion 140, and a third pillar component 154 located between the first pillar component 150 and the second pillar component 152 in the up-down direction of the support portion 140, and the third pillar component 154 is characterized in that it has a recess 156 on its front surface 154a that is formed so as to be concave toward the rear relative to the front surface 150a of the first pillar component 150 and the front surface 152a of the second pillar component 152.

[0127] The vacuum cleaner support device 120 is capable of forming an engagement structure with the pipe portion 30 at the first support component 150 constituting the support portion 140, and a recess 156 is provided on a front surface 154a of a third support component 154 provided between the first support component 150 and the second support component 152 forming the lower end side of the support portion 140. The front surface 154a of the third support component 154 is formed to be recessed toward the rear at the recess 156 relative to the front surface 150a of the first support component 150 and the front surface 152a of the second support component 152. Therefore, when the vacuum cleaner support device 120 is to be engaged with the pipe portion 30 at the first support component 150, the presence of the recess 156 makes it difficult for the rear end 47 of the cleaning tool 40 to interfere with the support portion 140. Therefore, according to the vacuum cleaner support device 120, the user can easily perform the task of engaging the pipe portion 30 with the first support component 150.

[0128] (4-2) In the above-described vacuum cleaner support device 120, the support portion 140 is characterized in that the front surface of the second support portion 152 is located rearward of the front surface of the first support portion 150.

[0129] By configuring the vacuum cleaner support device 120 as described above, when the cleaning tool 40 is engaged with the pipe part 30 at the first support component 150, the cleaning tool 40 can be smoothly pushed forward at the second support component 152 when the cleaning tool 40 passes through the recess 156 of the third support component 154 and reaches the second support component 152. Therefore, the vacuum cleaner support device 120 allows the user to engage the pipe part 30 with the support component 140 even more smoothly.

[0130] (4-3) In the vacuum cleaner support device 120 of (4-1) or (4-2) described above, the front surface 154a of the third pillar component 154 is characterized in having a first connection surface 154b continuing to the front surface 150a of the first pillar component 150, and a second connection surface 154c continuing to the front surface 152a of the second pillar component 152.

[0131] In the process of engaging the pipe portion 30 with the support pole portion 140, the cleaner 40 moves smoothly while being guided by the first connecting surface 154b and the second connecting surface 154c of the cleaner support device 120. Therefore, the cleaner support device 120 allows the operation of engaging the pipe portion 30 with the support pole portion 140 to be performed more smoothly.

[0132] (4-4) In the vacuum cleaner support device 120 described above in (4-1) to (4-3), the recess 156 is characterized in that it has a flat surface 104 between the first connecting surface 154b and the second connecting surface 154c.

[0133] By configuring the vacuum cleaner support device 120 as described above, in the process of engaging the pipe part 30 with the support pole part 140, the cleaning tool 40 guided by the first connecting surface 154b can be smoothly moved downward along the flat surface 104 and guided toward the second connecting surface 154c. Therefore, the vacuum cleaner support device 120 allows the user to engage the pipe part 30 with the support pole part 140 more smoothly.

[0134] (4-5) The cleaner support device 120 described above in (4-1) to (4-4) is characterized in that the second connecting surface 154c has a curved surface with a smaller curvature than the first connecting surface 154b.

[0135] By configuring the vacuum cleaner support device 120 as described above, in the process of engaging the pipe portion 30 with the support portion 140, the cleaning tool 40 is prevented from getting in the way of the support portion 140 at the portion where the first connection surface 154b is provided, and when the cleaning tool 40 passes through the portion where the second connection surface 154c is provided, the cleaning tool 40 is smoothly urged forward and placed down. Therefore, the vacuum cleaner support device 120 allows the user to smoothly engage the pipe portion 30 with the support portion 140.

[0136] (4-6) The above-mentioned electric vacuum cleaner system S is characterized by including the vacuum cleaner support device 120 described in any one of (4-1) to (4-5) above, and the electric vacuum cleaner 1.

[0137] Since the electric vacuum cleaner system S includes the vacuum cleaner support device 120, the user can easily perform the task of engaging the pipe portion 30 with the first support pillar component 150.

[0138] [Regarding the vacuum cleaner 1 according to the fifth aspect of the present invention] Conventionally, there is a vacuum cleaner disclosed in JP 2011-10743 A, which includes a vacuum cleaner body housing an electric blower, a control means for selectively operating the electric blower in one of a plurality of operation modes with different inputs, a non-volatile storage means capable of storing the operation modes of the electric blower, and a floor cleaning judgment means for judging whether or not a floor surface is being cleaned, and the control means drives the electric blower in the operation mode stored in the storage means when the electric blower previously cleaned the floor surface when the floor cleaning judgment means judges that the floor surface is being cleaned after the electric blower is restarted. In this electric vacuum cleaner, when the floor cleaning judgment means judges that the floor surface is being cleaned after the electric blower is restarted, the control means drives the electric blower in the operation mode stored in the storage means when the electric blower previously cleaned the floor surface, so that when the floor surface is being cleaned, the operation of driving the electric blower in the operation mode stored in the storage means when the electric blower previously cleaned the floor surface is performed without the operator operating the operation mode.

[0139] However, in the conventional technology, it is necessary to store in advance a number of normal operation modes that can be operated when the floor cleaning determination means determines that the floor surface is being cleaned, and a number of special operation modes that can be operated when the floor cleaning determination means determines that the floor surface is not being cleaned, and thus it becomes necessary to select from among many modes.

[0140] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a vacuum cleaner in which the suction power of the electric blower can be easily changed.

[0141] (5-1) The electric vacuum cleaner 1 provided to solve the above-mentioned problems comprises a vacuum cleaner body 10 having an electric blower 70 and a control unit 90 that controls the operation of the electric blower 70, and a cleaning tool 40 that takes in dust, and the control unit 90 is capable of controlling the operation of the electric blower 70 based on a duty ratio, and is characterized in that the duty ratio that is set on the condition that the vacuum cleaner body 10 and the cleaning tool 40 are in a connected state is higher than the duty ratio that is set on the condition that the vacuum cleaner body 10 and the cleaning tool 40 are in a non-connected state.

[0142] With the above-described configuration, the vacuum cleaner 1 can change the suction power of the electric blower more easily than, for example, in the prior art where the suction power of the electric blower is changed by storing multiple operating modes separately for when the floor is being cleaned and when it is not being cleaned.

[0143] (5-2) The electric vacuum cleaner 1 provided to solve the above-mentioned problems comprises a vacuum cleaner body 10 having an electric blower 70 and a control unit 90 that controls the operation of the electric blower 70, and a cleaning tool 40 that takes in dust, and the control unit 90 is characterized in that the duty ratio set on the condition that the vacuum cleaner body 10 and the cleaning tool 40 are directly or indirectly connected is higher than the duty ratio set on the condition that the direct or indirect connection between the vacuum cleaner body 10 and the cleaning tool 40 is released.

[0144] With the above-described configuration, the vacuum cleaner 1 can change the suction power of the electric blower more easily than, for example, in the prior art where the suction power of the electric blower is changed by storing multiple operating modes separately for when the floor is being cleaned and when it is not being cleaned.

[0145] (5-3) In the electric vacuum cleaner 1 of (5-1) or (5-2) described above, the control unit 90 is configured to make the duty ratio, which is set on the condition that an electrical connection between the vacuum cleaner body 10 and the cleaning tool 40 is detected, higher than the duty ratio, which is set on the condition that an electrical connection between the vacuum cleaner body 10 and the cleaning tool 40 is not detected.

[0146] With the above-described configuration, the vacuum cleaner 1 changes the duty ratio according to the electrical connection state between the vacuum cleaner body 10 and the cleaning tool 40, so that the suction power of the electric blower can be easily changed.

[0147] (5-4) The electric vacuum cleaner 1 described above in (5-1) to (5-3) is characterized in that it includes a battery 80 that supplies power to the electric blower 70.

[0148] With the above-described configuration, the electric vacuum cleaner 1 can drive electric blower 70 with an appropriate output depending on the connection state between the vacuum cleaner body 10 and the cleaning tool 40, thereby optimizing the power consumption associated with driving electric blower 70. Therefore, the electric vacuum cleaner 1 is suitable for driving electric blower 70 by battery 80 as described above in (5-4).

[0149] (5-5) The electric vacuum cleaner 1 of (5-1) to (5-4) described above has a selectable first operating mode and a second operating mode having a greater suction force than that of the first operating mode, and is characterized in that the suction force of each of the first operating mode and the second operating mode is changed by changing the duty ratio while maintaining the relationship in which the suction force of the second operating mode is greater than that of the first operating mode.

[0150] With the above-described configuration, the vacuum cleaner 1 has two or more operating modes with different suction powers, and can drive the electric blower 70 with an appropriate output depending on the connection state between the vacuum cleaner body 10 and the cleaning tool 40. Therefore, the vacuum cleaner 1 does not need to further define an operating mode with a different output depending on the connection state between the vacuum cleaner body 10 and the cleaning tool 40 for each of the two or more operating modes with different suction powers, which improves user convenience and simplifies the control configuration.

[0151] (5-6) The above-mentioned (5-5) vacuum cleaner 1 is characterized in that it has a first operating unit 92 for setting a first operating mode and a second operating unit 94 for setting a second operating mode.

[0152] The electric vacuum cleaner 1 having the above-mentioned configuration allows the user to easily select whether the vacuum cleaner 1 is to be operated in the first operation mode or the second operation mode.

[0153] The present invention is not limited to the configurations described in the above-mentioned embodiments, and appropriate design modifications and the like are possible within the scope of the technical idea of ​​the present invention. The components of the above-mentioned embodiments and modifications may be arbitrarily selected and combined. Any component of each embodiment or modification may be arbitrarily combined with any component described in the means for solving the invention, the mode for carrying out the invention, etc., or any component that embodies any component described in the means for solving the invention, the mode for carrying out the invention, etc. The present invention also intends to obtain rights to these in this application or in a divisional application based on this application. [Industrial Applicability]

[0154] The present invention can be suitably used in vacuum cleaners in general. [Explanation of symbols]

[0155] 1: Vacuum cleaner 10: Vacuum cleaner body 12: Main body 14: Suction port 20: Dust collection section 24: Battery compartment 24a: Opening 24c: Opening surface 30: Pipe part 40: Cleaning equipment 46: Rotating cleaning body 62: Entrance opening 70: Electric blower 80: Battery 90: Control section 92:First operation section 94:Second operation section 100: Handle part 100a: Rear part 100b: Front part 102:Bending position 102a: Rear bend part 104 :Flat surface 106:Operation unit 120: Vacuum cleaner support device 130: Placement section 140: Strut part 150: First pillar component 150a: Front 152:Second pillar component 152a:Front 154:Third pillar component 154a:Front 154b: First connection surface 154c: Second connecting surface 156: Recess 200: Cleaning body 202j: Engagement part 202k:Shaft 202p: Driven side bearing holding part 202z: First bearing part (first driven side bearing part) 210: Drive unit 210a: Motor 212: Belt 214: Output pulley 214p: Output side bearing holding part 214z:Output side bearing part 216: Driven pulley 220: Support part 225: Second bearing part (second driven side bearing part) 250: Guide section 270: Driven side guide part 272: Driven side guide part 282: Anti-pullout member DS: Driven side structure S: Vacuum cleaner system

Claims

1. An inlet opening for dust to enter; A rotating cleaning body having a cleaning body; a drive unit having an output pulley provided on a rotating shaft of a motor; a driven pulley around which a belt is wound together with the output pulley; a first driven-side bearing portion formed of a ball bearing for receiving a shaft portion on which the driven-side pulley is supported; a driven-side bearing holding portion that holds the first driven-side bearing portion.

2. an engaging portion that is separably engaged with an axial end portion of the rotary cleaning body, The cleaning tool according to claim 1 , wherein the engaging portion, the driven pulley, and the first driven bearing portion are arranged in this order.

3. The cleaning tool according to claim 1 or 2, further comprising a second driven-side bearing portion that receives the shaft portion, and a support portion that supports the second driven-side bearing portion.

4. The cleaning tool according to any one of claims 1 to 3, characterized in that the end of the shaft portion on the side of the first driven side bearing portion is prevented from coming off with the driven side pulley as a reference.

5. an output side bearing portion that receives a rotating shaft of the motor; an output side bearing holding portion for holding the output side bearing portion, 5. The cleaning tool according to claim 1, wherein the driven side bearing holder and the output side bearing holder are integrally formed.

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