Cleaning tools and vacuum cleaners

Abstract

To provide a cleaning tool for suppressing entangling of dust to spindle parts of a rotary cleaning body, and also to provide a vacuum cleaner including the tool.SOLUTION: A cleaning tool 1 includes a body 10, a rotary cleaning body 12, and an entangling prevention part 14. The body 10 includes: a rotary cleaning body arrangement part 101 where a lower part is opened; and a bearing arrangement part 102. The rotary cleaning body 12 includes: a cleaning member 121; and spindle parts positioned at both of ends of the cleaning member 121. The spindle part 122 is rotatably supported by the bearing arrangement part 102, and the cleaning member 121 is positioned in the rotary cleaning body arrangement part 101 so as to able to come into contact with the ground in the lower part. The entangling prevention part 14 is positioned on a lower side of at least a part of the spindle part 122 inside the rotary cleaning body arrangement part 101, so as to prevent entangling of dust from the cleaning member 121 to the spindle part 122.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] An embodiment of the present invention relates to a cleaning tool having a rotary cleaning element rotatably arranged on a main body, and a vacuum cleaner including the same. [Background technology]

[0002] Conventionally, a suction port body has been known as a cleaning tool used in an electric vacuum cleaner, which uses an electric motor to rotate a rotary cleaning body to scrape dust from a surface to be cleaned, such as a carpet, and then sucks in the scraped dust for cleaning. If dust adhering to the cleaning member of the rotary cleaning body becomes entangled in the support shaft that rotatably supports the rotary cleaning body on the main body, it will interfere with smooth rotation of the rotary cleaning body, so it is necessary to prevent dust from becoming entangled in the support shaft. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-25062 Summary of the Invention [Problem to be solved by the invention]

[0004] The problem to be solved by the present invention is to provide a cleaning tool that can prevent dust from becoming entangled on the support shaft of a rotary cleaning body, and an electric vacuum cleaner equipped with the cleaning tool. [Means for solving the problem]

[0005] The cleaning tool of the embodiment includes a main body, a rotary cleaning body, and an entanglement prevention part. The main body has a rotary cleaning body mounting part with an open bottom, and a bearing mounting part. The rotary cleaning body has a cleaning member and support shaft parts located at both ends of the cleaning member, and the support shaft parts are rotatably supported on the bearing mounting part, so that the cleaning member is located in the rotary cleaning body mounting part so that its bottom can contact the ground. The entanglement prevention part is From the wall separating the rotating cleaning body arrangement section and the bearing arrangement section Inside the rotating cleaning unit Standing outThe cleaning member is positioned below at least a portion of at least one of the support shafts, and serves to prevent dust from the cleaning member from becoming entangled in the support shaft. [Brief explanation of the drawings]

[0006] [Figure 1] 6(a) is a cross-sectional view of the cleaning tool of one embodiment taken along a line II in FIG. 5, and FIG. 6(b) is a cross-sectional view of the cleaning tool of one embodiment taken along a line II-II in FIG. [Figure 2] FIG. 6 is a cross-sectional view taken along a line corresponding to line III-III in FIG. 5. [Figure 3] 1A is a perspective view showing the cover of the cleaning tool from above, and FIG. 1B is a perspective view showing the cover from below. [Figure 4] FIG. 2 is a perspective view showing a rotating cleaning body of the cleaning tool. [Figure 5] FIG. [Figure 6] FIG. [Figure 7] FIG. 2 is a perspective view showing the internal structure of the cleaning tool from below. [Figure 8] FIG. 2 is a perspective view showing an electric vacuum cleaner equipped with the same cleaning tool. DETAILED DESCRIPTION OF THE INVENTION

[0007] Hereinafter, an embodiment will be described with reference to the drawings.

[0008] In Figures 5 and 7, 1 denotes a cleaning tool. Cleaning tool 1 has a main body 10. A drive source 11 is disposed in main body 10. The drive force of drive source 11 is transmitted via transmission body 13 to a rotary cleaning body 12 rotatably disposed on main body 10, causing rotation of rotary cleaning body 12. Rotary cleaning body 12 is detachable from main body 10. Cleaning tool 1 is configured to scrape dust from a surface to be cleaned, such as a floor, by the rotation of rotary cleaning body 12. Hereinafter, front-rear, left-right, and up-down directions are defined based on the state in which cleaning tool 1 is placed on a horizontal surface to be cleaned. In the figures, the direction of arrow FR is the forward direction, the direction of arrow RR is the backward direction, the direction of arrow L is the leftward direction, the direction of arrow R is the rightward direction, the direction of arrow U is the upward direction, and the direction of arrow D is the downward direction.

[0009] The main body 10 is a case body made of, for example, synthetic resin. In this embodiment, the main body 10 is divided into multiple case sections, which are assembled together. In the illustrated example, the main body 10 is short in the front-rear direction and elongated in the left-right direction. In other words, the main body 10 is horizontally long. The main body 10 is formed with a drive source arranging section 100 in which a part of the drive source 11 is located. In this embodiment, the drive source arranging section 100 is located inside the main body 10 and formed at the rear of the main body 10. The drive source arranging section 100 is also formed elongated in the left-right direction. In the illustrated example, the drive source arranging section 100 is located on one side of the main body 10 in the left-right direction, for example, on the left side. The left-right dimension of the drive source arranging section 100 is set to approximately half the size of the main body 10. The drive source arranging section 100 is formed with an outside air intake 1000. The outside air intake 1000 is opened, for example, at the rear of the main body 10. The drive source 11 is configured to be cooled by the outside air taken into the drive source placement section 100 through the outside air intake 1000.

[0010] The main body 10 is also formed with a rotary cleaning element mounting section 101. In this embodiment, the rotary cleaning element mounting section 101 is formed in the front part of the main body 10. In the illustrated example, the rotary cleaning element mounting section 101 is located at the forefront of the main body 10. The rotary cleaning element mounting section 101 is formed in the front-rear direction, extending from the forefront of the main body 10 to a position rearward of the center. The rotary cleaning element mounting section 101 is also formed elongated in the left-right direction. The rotary cleaning element mounting section 101 is located at the center of the main body 10 in the left-right direction, and extends left and right from the center. The dimension of the rotary cleaning element mounting section 101 in the left-right direction is slightly smaller than that of the main body 10. In this embodiment, the rotary cleaning element mounting section 101 is adjacent to the drive source mounting section 100 in the front-rear direction via a partition wall 1010, and is formed independently of the drive source mounting section 100. In this embodiment, a communication port 10100 is formed in the partition wall 1010, which communicates between the rotary cleaning element arrangement section 101 and the drive source arrangement section 100. The communication port 10100 is an opening through which outside air taken into the drive source arrangement section 100 from the outside air intake port 1000 is exhausted from the drive source arrangement section 100 to the rotary cleaning element arrangement section 101.

[0011] A main opening 1011 is also formed in the rotary cleaning element mounting portion 101. The main opening 1011 is located at least in the lower part of the main body 10 and the rotary cleaning element mounting portion 101. A portion of the rotary cleaning element 12 is exposed from the main opening 1011 to at least the lower part of the main body 10, and is able to come into contact with the part to be cleaned at least at a lower position of the main body 10 when placed on the part to be cleaned. The main opening 1011 is formed elongated in the left-right direction. The main opening 1011 is also formed in the front-rear direction, extending from the forefront of the main body 10 to a position rearward of the center. The main opening 1011 is open over the entire or substantially the entire rotary cleaning element mounting portion 101 in the left-right and front-rear directions.

[0012] The main body 10 also has a bearing arrangement portion 102. In this embodiment, the bearing arrangement portion 102 is a transmission body arrangement portion in which at least the transmission body 13 is arranged. The bearing arrangement portion 102 is formed on one side of the main body 10, for example, on the left side. In the illustrated example, the bearing arrangement portion 102 is located at the left end of the main body 10. The bearing arrangement portion 102 is formed elongated in the front-rear direction. That is, the dimension of the bearing arrangement portion 102 in the front-rear direction is greater than the dimension in the left-right direction. The bearing arrangement portion 102 is adjacent to one side of the drive source arrangement portion 100 and the rotary cleaning body arrangement portion 101 in the left-right direction, with a partition wall 1020 interposed between them. The partition wall 1020 may be formed separately at the position of the drive source arrangement portion 100 and the position of the rotary cleaning body arrangement portion 101, or may be formed integrally.

[0013] 6, an opening 1021 is formed in the lower part of the bearing arrangement part 102. The opening 1021 exposes one end of the rotary cleaning body 12 and a part of the transmission body 13. The opening 1021, together with the main opening 1011, is a maintenance opening or a bottom open space that is used when removing the rotary cleaning body 12 from the main body 10. In this embodiment, the opening 1021 is formed so as to be continuous with the main opening 1011. The opening 1021 can be opened and closed by the cover 103.

[0014] The lid 103 shown in FIGS. 3(a), 3(b), 5, and 6 is a case that constitutes a part of the main body 10. The lid 103 is narrow in the left-right direction and elongated in the front-to-rear direction. The lid 103 is rectangular in shape in a plan view. The lid 103 has locking portions 1030, 1031 formed on the front and rear sides for locking the lid 103 to the main body 10 while covering the opening 1021. For example, one of the locking portions 1030, 1031 is a fixed claw, and the other is a movable claw. In this embodiment, the front locking portion 1030 is a fixed claw, and the rear locking portion 1031 is a movable claw that is elastic in the front-to-rear direction. By engaging locking portion 1030 with a lock receiving portion formed on main body 10 and pushing locking portion 1031 into mounting portion 104, which is a hole formed in main body 10, locking portion 1031 elastically deforms forward and then returns to its original shape to be engaged with the edge of mounting portion 104. Furthermore, by pushing locking portion 1031 exposed from mounting portion 104 forward, locking portion 1031 is released from the mounting portion 104, and lid 103 can be removed from main body 10.

[0015] Additionally, the cover 103 is provided with a sliding member 1032 and wheels 1033 spaced apart from each other in the front and rear directions to assist the front and rear movement of the main body 10 on the area to be cleaned. In the example shown, the sliding member 1032 is located at the front end of the cover 103, and the wheels 1033 are located near the rear of the cover 103 and close to the locking portion 1031. The sliding member 1032 reduces sliding resistance or friction with the area to be cleaned. For example, a nonwoven fabric is used as the sliding member 1032. The wheels 1033 are rotatable in the front and rear directions.

[0016] Furthermore, as shown in FIG. 5 , the main body 10 is formed with a bearing arrangement portion 105. In the illustrated example, the bearing arrangement portion 105 is formed on the other side of the main body 10, for example, on the right side. For example, the bearing arrangement portion 105 is located at the right end of the main body 10. That is, the bearing arrangement portion 105 is located on the opposite side of the bearing arrangement portion 102 with respect to the rotary cleaning element arrangement portion 101. The bearing arrangement portion 105 is formed elongated in the front-rear direction. That is, the dimension of the bearing arrangement portion 105 in the front-rear direction is greater than the dimension in the left-right direction. The bearing arrangement portion 105 is adjacent to the other side of the rotary cleaning element arrangement portion 101 in the left-right direction via a partition wall. Therefore, the bearing arrangement portions 102 and 105 are adjacent to both sides of the rotary cleaning element arrangement portion 101. The bearing arrangement portion 105 is in communication with the rotary cleaning element arrangement portion 101 via a communication opening formed in this partition wall. The lower part of the bearing arrangement portion 105 is covered by a bottom wall portion 106. The bottom wall 106 is formed integrally with the partition wall between the rotary cleaning element arrangement section 101 and the bearing arrangement section 105. The bottom wall 106 is formed elongated in the front-to-rear direction. The bottom wall 106 has a shape that is approximately symmetrical in the left-to-right direction to the lid body 103. Sliding members 1060 and wheels 1061 similar to the sliding members 1032 and wheels 1033 of the lid body 103 are attached to the front and rear of the bottom wall 106.

[0017] As shown in FIGS. 6 and 7 , the driving source 11 housed in the main body 10 from the driving source arrangement section 100 to the bearing arrangement section 102 is an electric unit or actuator that operates by power supply in this embodiment. For example, the driving source 11 is an electric motor. The driving source 11 includes a driving source main body 110. The driving source main body 110 has a cylindrical appearance. A rotor and a stator are disposed inside the driving source main body 110. The driving source main body 110 is disposed in the driving source arrangement section 100. In this embodiment, the driving source main body 110 is disposed with its axial direction aligned with the left-right direction. The driving source main body 110 is supported by a support section 1001 in the driving source arrangement section 100. The support section 1001 is formed, for example, in the shape of a rib extending in the front-rear direction and intersecting the longitudinal direction of the driving source arrangement section 100.

[0018] One end of the drive source main body 110 is located adjacent to or close to a partition wall 1020 between the drive source arrangement section 100 and the bearing arrangement section 102. In this embodiment, one end of the drive source main body 110 is fitted into and supported by a notch 10200 formed in the partition wall 1020. A rotating shaft 111 protrudes from one end of this drive source main body 110. The rotating shaft 111 is formed integrally with the rotor and is positioned coaxially with the drive source main body 110. The rotating shaft 111 protrudes from the notch 10200 into the bearing arrangement section 102. Rotation of the rotating shaft 111 rotates the driving force output section 112.

[0019] The driving force output section 112 is located in the bearing arrangement section 102. In the illustrated example, the driving force output section 112 is a pulley attached coaxially to the rotating shaft 111. In this embodiment, the driving force output section 112 is a prime mover gear. A meshing section 1120, which is a gear tooth section that meshes with the transmission body 13, is formed on the outer periphery of the driving force output section 112. The meshing section 1120 is formed around the entire circumference of the driving force output section 112. The meshing section 1120 makes the outer periphery of the driving force output section 112 shaped like a spur gear. The transmission body 13 is wound around the outer periphery of the driving force output section 112.

[0020] As shown in FIGS. 6 and 7 , the rotary cleaning body 12, which is housed in the main body 10 from the rotary cleaning body mounting portion 101 to the bearing mounting portion 102 and bearing mounting portion 105, is formed in an elongated shape and is arranged with its longitudinal direction aligned with the left-right direction. The rotary cleaning body 12 has a long base 120. The base 120 has a length substantially equal to the longitudinal dimension of the main opening 1011. A cleaning member 121 that scrapes out dust from the area to be cleaned is arranged on the base 120. The cleaning member 121 protrudes radially from the base 120. A plurality of cleaning members 121 are arranged circumferentially around the base 120, spaced apart from one another. The cleaning member 121 is arranged in the shape of a wall that extends from one end of the base 120 to the other end. The entire length of the cleaning member 121 is located in the rotary cleaning body mounting portion 101. The cleaning element 121 located at the bottom is disposed so that its tip protrudes from the main opening 1011 at least downward from the main body 10. In the illustrated example, the cleaning element 121 is twisted circumferentially from one end to the other end of the base 120. The cleaning element 121 may be, for example, a bristle brush or a blade formed of an elastic material, or a combination thereof. In this embodiment, the cleaning elements 121 are held at their base ends in a holding groove 1200 formed on the outer circumferential surface of the base 120. A cleaning element main body of the rotating cleaning element 12, consisting of the base 120 and the cleaning element 121, is positioned in the rotating cleaning element mounting section 101, facing the main opening 1011. At least a lower portion of the cleaning element 121 protrudes downward from the main opening 1011 relative to the underside of the main body 10, and the lower portion can come into contact with the surface to be cleaned.

[0021] As shown in FIG. 4, the cleaning member 121 includes a first cleaning member 121a and a second cleaning member 121b. In this embodiment, the first cleaning member 121a protrudes radially from the base 120 slightly longer than the second cleaning member 121b. In the illustrated example, the first cleaning member 121a, the first cleaning member 121a, and the second cleaning member 121b are arranged in this order around the circumference of the rotary cleaning body 12. That is, the first cleaning members 121a and the second cleaning members 121b are arranged alternately around the circumference of the rotary cleaning body 12, and there are more first cleaning members 121a than second cleaning members 121b. In this embodiment, the second cleaning member 121b functions as a tangle-reducing member that prevents dust DU, such as thread-like debris, adhering to the tip of the cleaning member 121 from entering the base 120 as the rotary cleaning body 12 rotates.

[0022] Furthermore, support shafts 122 and 123, which serve as receiving plates, are attached to both ends of the base 120. That is, the support shafts 122 and 123 are located at both ends of the cleaning member 121. As shown in FIG. 7 , the support shafts 122 and 123 are supported by the main body 10 via bearings 124 and 125. In the illustrated example, at least a portion of the support shafts 122 and 123 is disposed in the bearing arrangement portions 102 and 105. In this embodiment, the support shafts 122 and 123 function as cleaning member stoppers that prevent the cleaning member 121 from falling out of the holding groove 1200 by closing the end of the holding groove 1200 and thereby hold the cleaning member 121 in the holding groove 1200.

[0023] The support shaft 122 has a guard portion 1220, a protrusion 1221, a connecting portion 1222, a driving force receiving portion 1223, and a support shaft 1224. The guard portion 1220 is an end plate portion that protects the support shaft 122 from dust and dirt passing from the cleaning member 121 side to the cleaning member 122 side. The guard portion 1220 is, for example, a flange portion formed in a circular plate shape. The guard portion 1220 extends in the radial direction of the rotary cleaning body 11, i.e., in a direction intersecting or perpendicular to the rotation axis A. The guard portion 1220 abuts against the end face of the base 120 and is disposed in a plane in a direction intersecting the axial direction of the base 120. There is a slight gap between the guard portion 1220 and the cleaning member 121 in the left-right direction. The guard portion 1220 has a protrusion 1221 formed thereon. The protrusion 1221 is inserted into the end of the holding groove 1200 and closes the end of the holding groove 1200. By inserting the protrusion 1221 into the holding groove 1200, the support shaft 122 is integrally fixed to the end of the base 120. For example, a plurality of protrusions 1221 are formed and positioned apart from each other in the circumferential direction of the guard portion 1220. A driving force receiving portion 1223 is integrally formed coaxially with the guard portion 1220 on the side opposite the protrusion 1221 via a connecting portion 1222. A space is formed between the guard portion 1220, the driving force receiving portion 1223, and the outer periphery of the connecting portion 1222. In this embodiment, this space is located at a cutout portion 10201 formed in the partition wall 1020. Therefore, the support shaft 122 is located in the rotary cleaning element placement section 101 on the guard section 1220 side from the space, and is located in the bearing placement section 102 on the driving force receiving section 1223 side from the space.

[0024] The driving force receiving portion 1223 is a pulley arranged coaxially with the base 120. In this embodiment, the driving force receiving portion 1223 is a driven gear. The driving force receiving portion 1223 is formed in a cylindrical shape and has an open end opposite the base 120, the guard portion 1220, or the connecting portion 1222. A gear tooth portion 12230 that meshes with the transmission body 13 is formed on the outer periphery of the driving force receiving portion 1223. The gear tooth portion 12230 is formed around the entire circumference of the driving force receiving portion 1223. The gear tooth portion 12230 forms the outer periphery of the driving force receiving portion 1223 into a spur gear shape. The gear tooth portion 12230 has teeth that are basically the same shape as those of the gear tooth portion 1120 on the outer periphery of the driving force output portion 112 of the driving source 11. The transmission body 13 is wrapped around the outer periphery of the driving force receiving portion 1223. The driving force receiving portion 1223 is located in the bearing arrangement portion 102, away from and forward of the driving force output portion 112 of the driving source 11. The driving force receiving portion 1223 is located so that its axial direction is parallel or approximately parallel to the driving force output portion 112. The toothing portion 12230 of the driving force receiving portion 1223 overlaps with the toothing portion 1120 of the driving force output portion 112 by a predetermined width in the left-right direction that is equal to or greater than the width of the transmission body 13.

[0025] As shown in FIG. 7 , a support shaft 1224 is coaxially attached to the driving force receiving portion 1223. The central axis of the support shaft 1224 forms the rotation axis A of the rotary cleaning body 12. The base end of the support shaft 1224 is fixed to the connecting portion 1222, and the tip end thereof protrudes from an opening at the end of the driving force receiving portion 1223. As shown in FIG. 6 , the support shaft 1224 is rotatably held by a bearing 124 fitted inside the driving force receiving portion 1223. The portion of the bearing 124 that protrudes from the opening at the end of the driving force receiving portion 1223 forms a held portion 1240 that is held by a holding portion 1023 formed in the bearing arrangement portion 102 of the main body 10. The held portion 1240 is held by being sandwiched front to back and / or top to bottom by the holding portion 1023, so that the bearing 124 is held in the main body 10 in a rotation-preventing manner. The lower part of the holding part 1023 is openably and closably covered by the lid 103. A part of the holding part 1023 may be formed in the lid 103.

[0026] 7 includes a guard portion 1230, a protrusion 1231, a cylindrical portion 1232, and a support shaft 1233. The guard portion 1230 is an end plate portion that protects the support shaft 123 from dust from the cleaning member 121 side. The guard portion 1230 is, for example, a flange portion formed in a circular plate shape. The guard portion 1230 extends in the radial direction of the rotary cleaning body 11, i.e., in a direction intersecting or perpendicular to the rotation axis A. The guard portion 1230 is, for example, formed in a circular plate shape. The guard portion 1230 abuts against the end surface of the base 120 and is disposed in a planar shape in a direction intersecting the axial direction of the base 120. The guard portion 1230 is formed with a protrusion 1231. The protrusion 1231 is inserted into the end of the holding groove 1200 to close the end of the holding groove 1200. By inserting the protrusion 1231 into the holding groove 1200, the support shaft 123 is fixed integrally to the end of the base 120. A plurality of protrusions 1231 are formed and are positioned apart from each other in the circumferential direction of the guard part 1230. A cylindrical part 1232 is integrally formed coaxially with the guard part 1230 on the side opposite to the protrusion 1231.

[0027] The cylindrical portion 1232 has an open end on the opposite side from the base 120 or the guard portion 1230. A support shaft 1233 is coaxially attached to the cylindrical portion 1232. The central axis of the support shaft 1233 forms the rotation axis A of the rotary cleaning body 12. That is, the support shaft 1233 is arranged coaxially or approximately coaxially with the support shaft 1224. The support shaft 1233 and the support shaft 1224 may be separate bodies, or may be formed integrally and inserted across both ends of the base 120. In this embodiment, the base end of the support shaft 1233 is fixed to the cylindrical portion 1232, and the tip end protrudes from the opening at the end of the cylindrical portion 1232. The support shaft 1233 is rotatably held by a bearing 125 fitted inside the cylindrical portion 1232. The portion of bearing 125 that protrudes from cylindrical portion 1232 serves as held portion 1250 that is held in a rotation-prevented state by a holding portion formed in bearing arrangement portion 105 shown in Fig. 2 in main body 10. Holding portion 1250 is held by being sandwiched front to back and / or top to bottom by the holding portion, so that bearing 125 is held in a rotation-prevented state in main body 10. The holding portion is accessible from the rotary cleaning element arrangement portion 101 or main opening 1011 side through a notch formed in the partition wall between bearing arrangement portion 105 and rotary cleaning element arrangement portion 101.

[0028] 6 and 7, the transmission body 13 housed in the bearing arrangement portion 102 of the main body 10 is formed in a strip shape with a predetermined width and a predetermined thickness. A meshing portion 130 is formed on the inner surface or rear surface of the transmission body 13. The meshing portion 130 meshes with a meshing portion 1120 formed on the driving force output portion 112 of the driving source 11 and a meshing portion 12230 formed on the driving force receiving portion 1223 of the rotating cleaning body 12, respectively.

[0029] 1 to 5, a tangle prevention portion 14 is disposed on at least one of the support shafts 122, 123 of the rotary cleaning body 12 to prevent thread-like debris such as hair from becoming tangled during rotation. The tangle prevention portion 14 is located below at least one of the support shafts 122 of the rotary cleaning body 12, in this embodiment, the support shaft 122, and protrudes into the rotary cleaning body mounting portion 101 to prevent dust from becoming tangled around the support shaft 122. The lower portion of the tangle prevention portion 14 is located near the underside of the main body 10, within the main opening 1011. Therefore, the tangle prevention portion 14 is positioned adjacent to and facing the part to be cleaned when the cleaning tool 1 or the main body 10 is placed on the part to be cleaned. In the illustrated example, the tangle prevention portion 14 protrudes into the rotary cleaning body mounting portion 101 to a position where it intersects with the guard portion 1220 of the support shaft 122.

[0030] As shown in FIGS. 3(a) and 3(b), the tangle prevention portion 14 has an end wall 140. The end wall 140 is a plate-shaped dust-removing portion having a thickness in the front-rear direction. As shown in FIG. 2, the end wall 140 abuts against the cleaning member 121 of the rotary cleaning body 12 in the left-right direction. That is, the end wall 140 abuts against the left-right end face of the cleaning member 121, i.e., the left end face in this embodiment. Therefore, the end wall 140 is located between the right edge of the cover 103 and the guard portion 1220 of the support shaft 122. When viewed from the front, the end wall 140 has a U-shape or a concave shape that surrounds the outer edge of the guard portion 1220 from one side to the other side, and is close to both sides of the guard portion 1220. That is, the end wall 140 is formed with an open upper portion facing the guard portion 1220 of the support shaft 122.

[0031] 1(a) and 1(b), the end wall 140 is located forward of the lowest point P of the imaginary outer periphery circle C of the cleaning members 121 of the rotary cleaning body 12 in the direction of rotation. The imaginary outer periphery circle C is a virtual circle that represents the axial path of the tips of the cleaning members 121 of the rotary cleaning body 12 as they rotate about the rotation axis A. The lowest point P is the center of the imaginary outer periphery circle C, i.e., the position where the imaginary outer periphery circle C intersects with an imaginary vertical plane passing through the rotation axis A of the rotary cleaning body 12. Therefore, the lowest point P is directly below the rotation axis A of the rotary cleaning body 12. The "front side" of the end wall 140 in the direction of rotation of the rotary cleaning body 12 refers to the side of the end wall 140 that rotates toward the part to be cleaned with respect to the imaginary vertical plane passing through the lowest point P of the rotary cleaning body 12, i.e., the imaginary plane including the lowest point P and the rotation axis A. In this embodiment, the rotary cleaning body 12 rotates in the direction of arrow X, for example. In this case, the end wall 140 is located at least on the left side of the lowest point P in the figure. In the illustrated example, the end walls 140 are formed on the front and rear sides of the lowest point P in the rotation direction of the rotary cleaning body 12. However, the rotary cleaning body 12 may rotate in the direction opposite to the arrow X, or the rotation direction of the rotary cleaning body 12 may change depending on the forward and backward movement of the cleaning tool 1 or main body 10 on the part to be cleaned. The end wall 140 only needs to be located at least on the front side of the lowest point P in the rotation direction depending on the rotation direction of the rotary cleaning body 12. In this embodiment, the entire tangle prevention portion 14 is located inside the imaginary outer circumferential circle C when viewed in the axial direction of the rotary cleaning body 12.

[0032] As shown in FIGS. 2, 3(a), and 3(b), the tangle prevention portion 14 has a side wall 141 continuous with the end wall 140. The side wall 141 is formed from the end of the end wall 140 along the guard portion of the support shaft, which in this embodiment is the guard portion 1220 of the support shaft 122. The side wall 141 is located on the cleaning member 121 side of the guard portion 1220, extends in the front-rear direction, and is parallel or substantially parallel to the guard portion 1220. The side wall 141 can abut against the end surface of the cleaning member 121. As shown in FIG. 1(a), the side wall 141 extends from forward to rearward of the lowest point P of the imaginary circumferential circle C. In this embodiment, the side wall 141 extends in the front-rear direction or the rotational direction of the rotating cleaning body 12, within the range where the cleaning member 121 contacts the surface to be cleaned, i.e., the ground contact range. The upper end of the side wall 141 is located above the lower end of the guard portion 1220. When viewed in the axial direction, the side wall 141 radially overlaps the outer edge of the guard portion 1220. Therefore, as shown in Fig. 2, the side wall 141 and the guard portion 1220 form a labyrinth-like structure that snakes radially in the axial direction of the rotary cleaning body 12 or the support shaft portion 122. Also, as shown in Figs. 1(a) and 1(b), the side wall 141 is formed to be curved in the front-to-rear direction. In the illustrated example, the side wall 141 is curved in an arc shape along the rotational direction of the rotary cleaning body 12.

[0033] Furthermore, the tangle prevention unit 14 has a cover portion 142 that covers the lower portions of the end wall 140 and the side wall 141. The cover portion 142 is positioned to extend in the front-rear direction. In this embodiment, the cover portion 142 is formed to be curved in a downward convex shape in the front-rear direction of the main body 10. In the illustrated example, the cover portion 142 has a cylindrical surface that curves in an arc along the rotation direction of the rotating cleaning body 12. That is, both front and rear end portions of the cover portion 142 are positioned higher than the center portion in the front-rear direction. The cover portion 142 constitutes the lowermost portion of the tangle prevention unit 14. In this embodiment, the lowermost portion of the cover portion 142, which is the center portion in the front-rear direction, is located at the lowest point P of the imaginary circumferential circle C when viewed in the axial direction. Furthermore, the cover portion 142 is positioned so as not to protrude downward from the lower surface of the lid body 103 or the lower surface of the main body 10.

[0034] Preferably, when the cleaning tool 1 is in use, the tangle prevention unit 14 is located below at least one of the support shafts in the rotary cleaning body mounting section 101, i.e., below at least a portion of the support shaft 122 of the rotary cleaning body 12 in this embodiment, and is configured to be movable from below at least one of the support shafts of the rotary cleaning body 12, i.e., below at least a portion of the support shaft 122 of the rotary cleaning body 12 in this embodiment, to a position where the rotary cleaning body 12 can be removed from at least the main body 10 or where at least one of the support shafts of the rotary cleaning body 12, i.e., the support shaft 122 of the rotary cleaning body 12 in this embodiment, is exposed. In this embodiment, the tangle prevention unit 14 is detachable from the main body 10. As shown in FIG. 6 , the tangle prevention unit 14 is formed integrally with the cover 103 and is detachable from the main body 10 together with the cover 103. By removing the tangle prevention part 14 from the main body 10, the tangle prevention part 14 moves to a position at least at which the rotary cleaning body 12 can be removed from the main body 10.

[0035] In this embodiment, tangle prevention section 14 is formed integrally with end wall 140 and cover section 142, which are connected to the edge of lid body 103 on the side of rotary cleaning element placement section 101, and side wall 141 is spaced left and right from the edge of lid body 103 on the side of rotary cleaning element placement section 101. Further, tangle prevention section 14 is located between sliding member 1032 and wheel 1033 in the front-rear direction of lid body 103. Without being limited to this, the tangle prevention part 14 may be detached from the main body 10 separately from the cover body 103 and be movable from below at least a portion of the support shaft 122 of the rotating cleaning body 12 to a position that exposes the support shaft 122 of the rotating cleaning body 12, or may be connected to the main body 10 or the cover body 103 by a connecting part such as a hinge or slide mechanism, and be movable by the connecting part from below at least a portion of the support shaft 122 of the rotating cleaning body 12 to a position that does not face the support shaft 122 or that exposes the support shaft 122.

[0036] The main body 10 is connected to an operating unit by an operating unit connector 15 shown in Fig. 5 and is used in the vacuum cleaner 2 (shown in Fig. 8). The operating unit connector 15 is connected to the center of the rear of the main body 10 in the left-right direction. Preferably, the operating unit connector 15 is connected to the main body 10 so as to be rotatable. A protrusion 16 that protrudes rearward is formed below the operating unit connector 15 at the rear of the main body 10. A wheel 160 is attached to the rear end of the protrusion 16 so as to be rotatable in the front-to-rear direction.

[0037] In this embodiment, the cleaning tool 1 is a suction port body. In the example shown in FIG. 8, the operation unit connection part 15 is a connection pipe that fluidly communicates with the suction source via an extension pipe, which is a long air passage body. That is, in this embodiment, the extension pipe is the operation unit 20 connected to the operation unit connection part 15, and the operation unit connection part 15 fluidly communicates with the suction source 21 via the operation unit 20. As shown in FIG. 5, the main body 10 is formed with a communication part 107 that fluidly communicates with the operation unit connection part 15. The communication part 107 is located at the bottom of the main body 10, adjacent to the rear of the rotary cleaning element mounting part 101. The communication part 107 is located below the drive source mounting part 100 and is vertically separated from the drive source mounting part 100 by the bottom of the drive source mounting part 100. The communication part 107 is formed elongated in the left-right direction. Furthermore, the communication part 107 is formed shorter in the front-rear direction than the rotary cleaning element mounting part 101. In this embodiment, the left and right sides of the communication portion 107 are open to the left and right sides of the main body 10. In the example shown, the communication portion 107 is fluidly connected to the outside of the left and right sides of the main body 10 via a groove 1034 formed in the left and right direction in the lid body 103 and a groove 1062 formed in the left and right direction in the bottom wall portion 106. The groove 1034 is located behind the wheel 1033 and in front of the locking portion 1031. The groove 1062 is located behind the wheel 1061.

[0038] Furthermore, the communication section 107 is divided into front and rear sections by a partition section 1070 that extends in the left-right direction relative to the rotary cleaning element mounting section 101. The partition section 1070 forms the rear edge of the main opening 1011. In this embodiment, a recess 10700 is formed in the partition section 1070 to avoid interference with the rotary cleaning element 12 when the rotary cleaning element 12 is removed from the main body 10. The recess 10700 is formed in the front left part of the partition section 1070, i.e., within the rotary cleaning element mounting section 101. The recess 10700 is located behind the guard section 1220 of the support shaft 122 of the rotary cleaning element 12.

[0039] The lower end of the partition portion 1070 is spaced upward from the lower surface of the main body 10. Therefore, a dust collection port 108 for collecting dust is formed as a space that connects the lower portion of the communication portion 107 to the lower portion of the rotary cleaning element placement portion 101. In this embodiment, the dust collection port 108 is an intake port that sucks in dust along with air. The dust collection port 108 is an open space that includes at least the main opening portion 1011. The dust collection port 108 is formed elongated in the left-right direction.

[0040] A seal member 109 is disposed along the rear of the dust collection port 108. When the main body 10 or the cleaning tool 1 is placed on the part to be cleaned, the lower end of the seal member 109 comes into close contact with the part to be cleaned, sealing the rear of the dust collection port 108 from the part to be cleaned. The seal member 109 is formed, for example, by grouping bristle brushes into a wall shape extending in the left-right direction.

[0041] Instead of the communication portion 107, the rotary cleaning element placement portion 101 may be formed as a suction groove that is directly in fluid communication with the operation unit connection portion 15. In this case, the main opening 1011 functions as a suction port.

[0042] In this embodiment, the vacuum cleaner 2 shown in FIG. 8 is a suction-type vacuum cleaner that uses suction force generated by a negative pressure generated by a suction source 21 to collect dust sucked from a cleaned area in a dust collection unit 22. The operation of the suction source 21, i.e., turning the vacuum cleaner 2 on and off, is controlled by an operation switch 23. The operation switch 23 is electrically connected to a main body control unit 24, which serves as a control unit. A microcomputer is preferably used as the main body control unit 24. The main body control unit 24 is configured, for example, by connecting a CPU as a central processing unit, RAM as a temporary storage device, EEPROM and ROM as storage devices, an input / output interface, and the like via a bus. The operation of the operation switch 23 sets the on / off operation of the suction source 21 to the main body control unit 24, and the main body control unit 24 controls the suction source 21 and the like in accordance with the setting. In other words, the start and end of operation of the vacuum cleaner 2, or the start and end of cleaning, are set in accordance with the operation of the operation switch 23. In this embodiment, while the vacuum cleaner 2 is in operation, the driving of the rotary cleaning body 12 is also set to on / off in response to the operation of the operation switch 23, and the main body control means 24 controls the drive source 11 in response to this setting. However, without being limited to this, for example, an operation switch for turning the driving of the rotary cleaning body 12 on / off separate from the operation switch 23 may be provided, or a control unit for controlling the drive source 11 may be arranged in the cleaning tool 1 separate from the main body control means 24.

[0043] Dust collection unit 22 is a separation unit that communicates with the intake side of suction source 21 and separates and collects dust from the sucked dust-containing air. Dust collection unit 22 may be a filtering means such as a filter, or may be a cyclone separation unit, an inertial separation unit, or the like.

[0044] In the illustrated example, the electric vacuum cleaner 2 is a stick vacuum cleaner. The electric vacuum cleaner 2 has a vacuum cleaner main body 25. In this embodiment, the vacuum cleaner main body 25 is provided with a suction source 21, a dust collecting unit 22, an operation switch 23, and a main body control means 24.

[0045] A grip portion 250 that can be gripped by a user is formed on the vacuum cleaner body 25. In this embodiment, the vacuum cleaner body 25 is formed in an elongated shape, and the grip portion 250 is arranged along the longitudinal direction of the vacuum cleaner body 25. Preferably, the operation switch 23 is arranged on the grip portion 250, so that the user can operate the operation switch 23 with the hand holding the grip portion 250.

[0046] Furthermore, vacuum cleaner body 25 is formed with body suction port 251, which is a connection port that fluidly communicates with dust collection unit 22. A straight extension tube that is operation unit 20 is connected to body suction port 251. Cleaning tool 1 is operated on the part to be cleaned by grip part 250 via operation unit 20 connected to body suction port 251. Operation unit connector 15 of cleaning tool 1 may be directly attachable to and detachable from body suction port 251.

[0047] Furthermore, cleaner body 25 is formed with body exhaust port 252 that is in fluid communication with the exhaust side of suction source 21. Air from which dust has been separated in dust collecting section 22 is discharged from body exhaust port 252.

[0048] Powered parts such as suction source 21, main body control means 24, and drive source 11 are supplied with power from power supply unit 26 arranged in vacuum cleaner main body 25. In this embodiment, the electric vacuum cleaner 2 is exemplified as a cordless type that uses, for example, a battery as power supply unit 26, but this is not limiting, and a cord reel device or the like that draws power from a commercial power source may also be used as power supply unit 26.

[0049] Next, the cleaning operation of the electric vacuum cleaner 2 of the embodiment will be described.

[0050] When the user operates operation switch 23 for driving suction source 21, i.e., for starting operation, a signal corresponding to the operation of operation switch 23 is input to main body control means 24. In response to the input signal, main body control means 24 generates a signal for operating suction source 21, and controls the power supplied from power supply unit 26 to operate suction source 21.

[0051] A user grips the handle 250 to operate the vacuum cleaner 2 and clean dust from a desired area to be cleaned. For example, the user moves the cleaning tool 1 back and forth over the area to be cleaned, such as a floor, and the negative pressure generated by the operation of the suction source 21 causes dust and air to be sucked from the area to be cleaned, such as a floor, through the dust collection port 108. The sucked-in dust-containing air is sucked from the operating unit 20 through the main body suction port 251 into the dust collection unit 22, where the dust is separated and collected. The air from which the dust has been separated passes through the suction source 21 to cool it, and is then discharged to the outside of the vacuum cleaner main body 25 through the main body exhaust port 252.

[0052] In particular, when the cleaning area is long-pile, such as a carpet, the user can operate the drive source 11 or the operating switch 23 for driving the rotating cleaning body 12 to rotate the rotating cleaning body 12 of the cleaning tool 1, thereby assisting in dust removal by scraping up the dust from the cleaning area, in order to more efficiently depict the dust that has gotten inside.

[0053] Specifically, when a user operates an operation switch 23 for driving the driving source 11 or the rotary cleaning body 12, a signal corresponding to the operation of the operation switch 23 is input to the main body control means 24. The main body control means 24 generates a signal for operating the driving source 11 in response to the input signal and controls the power supplied from the power supply unit 26 to operate the driving source 11. In the driving source 11, the rotary shaft 111 rotates at a rotation speed corresponding to the input signal, causing the driving force output unit 112, which is coaxially attached to the rotary shaft 111, to rotate integrally. Therefore, the transmission body 13, which is wound around the driving force output unit 112 of the driving source 11 and the driving force receiving unit 1223 of the rotary cleaning body 12, rotates due to the engagement of the toothing portions 1120 and 130 as the driving force output unit 112 rotates, and the driving force receiving unit 1223 rotates due to the engagement of the toothing portions 130 and 12230. That is, the driving force of drive source 11 is transmitted to rotary cleaning body 12 by transmission body 13, causing rotary cleaning body 12 to rotate. As rotary cleaning body 12 rotates, cleaning member 121, which comes into contact with the area to be cleaned, stirs up dust that has entered the area to be cleaned. The stirred-up dust is carried from operation unit connector 15 via operation unit 20 to dust collection unit 22 by the action of the negative pressure of suction source 21 acting on main opening 1011 and dust collection port 108.

[0054] At this time, as shown in FIG. 4 , dust DU, such as thread-like debris scraped up from the area to be cleaned, may adhere to the tip of the cleaning member 121 of the rotary cleaning body 12. As the rotary cleaning body 12 rotates, the dust DU spirally entangles itself around the rotary cleaning body 12 and attempts to move toward the end of the cleaning member 121 and also to penetrate into the base of the cleaning member 121, which is toward the center of the rotary cleaning body 12, i.e., the base 120. In particular, when the cleaning member 121 is arranged spirally, the contact position between the area to be cleaned and the tip of the cleaning member 121 gradually moves from one end to the other as the rotary cleaning body 12 rotates, making it easier for the dust DU to move toward the end. Furthermore, when the cleaning member 121 is provided with a second cleaning member 121b that functions as an entanglement suppression member, as in this embodiment, the dust is more likely to move toward the end of the cleaning member 121 than to penetrate into the base of the cleaning member 121. When the dust DU moves to the end of the cleaning member 121 and moves outward beyond the end of the cleaning member 121, it tries to wrap around the support shaft 122 or 123 located at the end of the cleaning member 121.

[0055] Therefore, in this embodiment, at least one of the spindles, for example at least a part of the spindle 122, is provided within the rotating cleaning body arrangement section 101 with an entanglement prevention section 14 for preventing dust from the cleaning member 121 from becoming entangled around the spindle 122. When dust picked up from the part to be cleaned by the cleaning member 121 moves toward the spindle 122 at the end of the cleaning member 121 as the rotating cleaning body 12 rotates, the entanglement prevention section 14 blocks the dust and prevents it from becoming entangled, thereby preventing the dust from becoming entangled around the spindle 122 of the rotating cleaning body 12.

[0056] Furthermore, the support shaft 122 is provided with a guard portion 1220 that extends radially of the rotating cleaning body 11 and guards against dust from the cleaning member 121 side, making it difficult for dust to become entangled around the support shaft 122. Furthermore, the entanglement prevention portion 14 protrudes into the rotating cleaning body arrangement portion 101 at a position that intersects with the guard portion 1220, thereby preventing dust from passing beyond the guard portion 1220 from the cleaning member 121 side and becoming entangled around the support shaft 122.

[0057] Since the tangle prevention portion 14 can come into contact with the cleaning member 121, as the rotating cleaning body 12 rotates, the tangle prevention portion 14 comes into contact with the cleaning member 121, causing the tangle prevention portion 14 to remove dust from the cleaning member 121, thereby more reliably preventing dust from becoming entangled.

[0058] At least a part of the entanglement prevention part 14, that is, in this embodiment, the end wall 140, is located forward of the lowest point of the imaginary outer circumferential circle of the cleaning member 121 in the direction of rotation of the rotary cleaning body 12, so that the entanglement prevention part 14 can remove dust DU adhering to the cleaning member 121 at a position immediately after the cleaning member 121 comes into contact with the part to be cleaned at a position forward of the lowest point as the rotary cleaning body 12 rotates and scrapes off the dust from the part to be cleaned. Therefore, the entanglement prevention part 14 can effectively prevent dust adhering to the cleaning member 121 from getting entangled on the support shaft 122 without giving the dust time to move toward the support shaft 122.

[0059] By arranging the tangle prevention portion 14 over the contact range of the cleaning member 121, it is possible to reliably prevent dust adhering to the cleaning member 121 of the rotating cleaning body 12 from moving toward the support shaft portion 122 due to contact between the part to be cleaned and the cleaning member 121.

[0060] By forming a side wall 141 on the tangle prevention portion 14 along the guard portion 1220 of the support shaft portion 122, the cleaning member 121 side of the guard portion 1220 is covered by a part of the side wall 141, which prevents dust from entering from the cleaning member 121 side to the support shaft portion 122 side over a wide area and also prevents dust scraped off from the cleaning member 121 by the tangle prevention portion 14 from entering the support shaft portion 122 side from the inside of the tangle prevention portion 14.

[0061] Furthermore, by forming a cover portion 142 on the tangle prevention portion 14 that is continuous with the side wall 141 and covers the lower portion, it is possible to prevent dust scraped off from the cleaning member 121 by the tangle prevention portion 14 from directly entering from below the tangle prevention portion 14.

[0062] By making the end wall 140 U-shaped or concave-shaped to fit the outer shape of the guard part 1220, the gap between the end wall 140 and the guard part 1220 can be narrowed, preventing dust from entering from the outside to the inside of the tangle prevention part 14.

[0063] Therefore, the entanglement prevention portion 14 can prevent dust from becoming entangled around the support shaft portion 122, thereby preventing the smooth rotation of the rotating cleaning body 12 and forcibly stopping or locking the rotation of the rotating cleaning body 12.

[0064] Furthermore, because the cover portion 142 is curved convexly downward in the front-to-back direction of the main body 10, the cover portion 142 acts as a sled surface, reducing the sliding resistance with the part to be cleaned when the cleaning tool 1 or the main body 10 is moved back and forth on the part to be cleaned, allowing the cleaning tool 1 or the main body 10 to move smoothly on the part to be cleaned, and preventing dust from the part to be cleaned from getting caught on the front and rear end positions of the cover portion 142 or from getting tangled and entering the interior of the blocking portion 14 when the cleaning tool 1 or the main body 10 is moved back and forth on the part to be cleaned.

[0065] When stopping the rotation of the rotating cleaning body 12, the user operates the operation switch 23 for stopping the drive source 11 or the rotating cleaning body 12, and a signal corresponding to the operation is input to the main body control means 24. Based on the input signal, the main body control means 24 generates a signal to stop the drive source 11, and the drive source 11 is stopped by the signal, thereby stopping the rotation of the rotating cleaning body 12.

[0066] When finishing cleaning, the user operates operation switch 23 to stop suction source 21, i.e., to stop operation, and a signal corresponding to this operation is input to main body control means 24. Based on the input signal, main body control means 24 generates a signal to stop suction source 21, which stops suction source 21. If the user operates operation switch 23 to stop suction source 21, i.e., to stop operation, while rotary cleaning body 12 is still running, main body control means 24 generates a signal to stop drive source 11 based on the input signal, which stops drive source 11 and also stops the rotation of rotary cleaning body 12.

[0067] During maintenance of the cleaning tool 1, the tangle prevention part 14 can be moved to a position where the rotary cleaning body 12 can be removed from the main body 10, and the rotary cleaning body 12 can be removed from the main body 10. In this embodiment, the tangle prevention part 14 is formed integrally with the lid 103, which can open and close the lower part of at least one of the bearing arrangement parts, in this embodiment, the lower part of the bearing arrangement part 102. This allows the tangle prevention part 14 to be moved to a position where the support shaft part 122 can be exposed and the rotary cleaning body 12 can be removed by removing the lid 103 from the main body 10 to open the bearing arrangement part 102, thereby easily removing the rotary cleaning body 12 from the main body 10 with a simple configuration. Moreover, compared to when the tangle prevention part 14 is formed separately from the lid 103, the tangle prevention part 14 is less likely to be lost once removed.

[0068] Specifically, the user pushes locking portion 1031 of cover 103 exposed from mounting portion 104 forward against the biasing force to release locking portion 1031 from mounting portion 104, and then rotates the rear portion of cover 103 in a direction away from main body 10, using locking portion 1030 as a fulcrum, to remove cover 103 from main body 10. By removing cover 103 in this manner, tangle prevention portion 14 formed integrally with cover 103 is also removed from main body 10, opening 1021 and exposing driving force receiving portion 1223 of rotating cleaning body 12, which is rotatably held by holding portion 1023 on main body 10. The user can remove support shaft 122 of rotating cleaning body 12 from main body 10 by shifting transmission body 13, which is wound around driving force receiving portion 1223, axially outward relative to driving force receiving portion 1223, or to the left in this embodiment, and removing it. Therefore, the rotating cleaning body 12 can be removed from the main body 10 by removing the support shaft 122 side of the rotating cleaning body 12 from the holding portion 1023 of the bearing arrangement portion 102 and lifting it from the main body 10, and then shifting the support shaft 123 side toward the support shaft 122 side to remove it from the holding portion of the bearing arrangement portion 105.

[0069] The rotating cleaning body 12 removed from the main body 10 can have dust adhering thereto removed, and can then be attached to the main body 10 in the reverse order of the removal.

[0070] Furthermore, by providing a cleaning tool 1 in which the smooth rotation of the rotary cleaning body 12 is less likely to be hindered by dust and which is easy to maintain, it is possible to provide an electric vacuum cleaner 2 that has high dust removal performance and is easy to use.

[0071] In the above embodiment, the vacuum cleaner 2 is not limited to a stick type, but may also be a floor-traveling type, a canister type, a handheld type, or the like. In the case of a canister type vacuum cleaner 2, the end of an extension tube of an air duct consisting of an extension tube and a hose body is attached to the operation unit connector 15 of the cleaning tool 1, and a user can operate the cleaning tool 1 by gripping a grip part arranged on the hose body or the like. In the case of a handheld type vacuum cleaner 2, a vacuum cleaner body having a grip part is attached to the operation unit connector 15 of the cleaning tool 1, and a user can operate the cleaning tool 1 by gripping the grip part of the vacuum cleaner body.

[0072] Furthermore, the tangle prevention portion 14 is not limited to being arranged below the support shaft portion 122, but may be arranged below the support shaft portion 123, or may be arranged below each of the support shaft portions 122 and 123.

[0073] Furthermore, the driving source 11 is not limited to an electric motor, and any device that generates a driving force to rotate the rotary cleaning body 12 may be used, such as an air turbine that converts suction force generated by negative pressure into driving force.

[0074] Furthermore, the vacuum cleaner 2 is not limited to one that generates negative pressure or suction force by the suction source 21, but may be one that uses the rotation of the rotary cleaning body 12 to scoop up and accumulate dust in the dust collecting part 22. In this case, the operating part connected to the operating part connecting part 15 may be a simple rod or a tool.

[0075] Furthermore, the cleaning tool 1 may be applied to a self-propelled electric vacuum cleaner. In this case, the main body 10 is formed integrally with the vacuum cleaner main body capable of autonomous travel, eliminating the need for an operation unit connector.

[0076] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention to these embodiments. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0077] 1 cleaning tools 2. Vacuum cleaner 10 Main Unit 12 Rotating cleaning body 14 Tangle prevention section 101 Rotating cleaning body arrangement section 102,105 Bearing arrangement part 103 Lid 121 Cleaning materials 122,123 Support shaft 141 Side wall 142 Cover part 1220,1230 Guard section C Virtual outer circle P lowest point

Claims

1. a main body having a rotary cleaning body arrangement portion with an open bottom and a bearing arrangement portion; a rotary cleaning body having a cleaning member and a support shaft portion located at both ends of the cleaning member, the support shaft portion being rotatably supported by the bearing arrangement portion, and the cleaning member being located in the rotary cleaning body arrangement portion so that a lower portion of the cleaning member can be grounded; an entanglement prevention portion that protrudes into the rotary cleaning element arrangement portion from a wall portion that separates the rotary cleaning element arrangement portion from the bearing arrangement portion and is located below at least a portion of at least one of the support shaft portions, and that prevents dust from the cleaning member side from becoming entangled on the support shaft portion; A cleaning tool comprising:

2. the support shaft portion includes a guard portion extending in a radial direction of the rotary cleaning body to protect against dust entering the cleaning member side, The tangle prevention portion protrudes into the rotary cleaning element arrangement portion at a position where it intersects with the guard portion.

2. The cleaning tool according to claim 1.

3. The tangle prevention portion removes dust from the cleaning member by contacting the cleaning member.

2. The cleaning tool according to claim 1.

4. At least a portion of the tangle prevention portion is located forward of the lowest point of the imaginary outer circumferential circle of the cleaning member in the direction of rotation of the rotary cleaning body.

2. The cleaning tool according to claim 1.

5. the support shaft portion includes a guard portion extending in a radial direction of the rotary cleaning body to protect against dust entering the cleaning member side, The tangle prevention portion has a side wall formed along the guard portion.

2. The cleaning tool according to claim 1.

6. The tangle prevention portion has a cover portion that is continuous with the side wall and covers the lower portion of the side wall.

6. The cleaning tool according to claim 5.

7. The cover portion is curved downward in a convex shape in the front-rear direction of the main body.

7. The cleaning tool according to claim 6.

8. a cover that can open and close a lower portion of at least one of the bearing arrangement portions, The tangle prevention portion is integrally formed with the lid body.

2. The cleaning tool according to claim 1.

9. A cleaning tool according to any one of claims 1 to 8 is provided. A vacuum cleaner characterized by:

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