WO2021256001A1 - Suction tool - Google Patents

Suction tool Download PDF

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Publication number
WO2021256001A1
WO2021256001A1 PCT/JP2021/005936 JP2021005936W WO2021256001A1 WO 2021256001 A1 WO2021256001 A1 WO 2021256001A1 JP 2021005936 W JP2021005936 W JP 2021005936W WO 2021256001 A1 WO2021256001 A1 WO 2021256001A1
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WO
WIPO (PCT)
Prior art keywords
scraping
dust
scraping roller
suction
cover member
Prior art date
Application number
PCT/JP2021/005936
Other languages
French (fr)
Japanese (ja)
Inventor
政紀 貞広
陽章 水野
弘之 大高
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to CN202180043240.8A priority Critical patent/CN115884702A/en
Publication of WO2021256001A1 publication Critical patent/WO2021256001A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators

Definitions

  • the present invention relates to a suction tool attached to a suction type cleaning machine.
  • the suction tool of Patent Document 1 includes a housing in which a suction space opened downward so as to suck dust on the floor surface is partitioned, and a scraping roller that is rotationally driven in the suction space.
  • the housing is formed with a flow path that opens toward the suction space at approximately the center in the width direction of the housing. This flow path is provided to flush the dust sucked into the suction space to the cleaning machine.
  • the scraping roller is held in the suction space so as to come into contact with the floor surface through the opening at the lower end of the suction space.
  • the scraping roller extends in the width direction of the housing in the suction space and is supported by the housing.
  • the suction tool of Patent Document 1 has a plurality of ridges provided on the inner surface of the housing in order to promote the removal of dust adhering to the outer peripheral portion of the scraping roller. These ridges project from the inner surface of the housing in an inclined posture so as to move the dust adhering to the outer peripheral portion of the scraping roller toward the center position in the width direction of the housing, and protrude to the outer peripheral portion of the scraping roller. Are in contact.
  • the dust adhering to the outer peripheral portion of the scraping roller moves to the center position in the width direction of the housing according to the inclination of the ridge portion. Since the above-mentioned flow path is open at the center position in the width direction of the housing, the dust moved to the center position receives a relatively strong suction force and is sucked into the flow path.
  • the dust wrapped around the scraping roller collects at the center position in the longitudinal direction of the scraping roller.
  • An object of the present invention is to provide a suction tool capable of eliminating a state in which dust adheres to a scraping roller.
  • the suction tool is configured to be attached to a cleaning machine that sucks dust.
  • the suction tool is configured to be rotatable so as to scrape dust, and two scraping rollers arranged at intervals in the width direction of the suction tool so as to form a gap between the tips.
  • the dust adhering to the outer peripheral portions of the two scraping rollers is moved toward the gap between the tips of the two scraping rollers, and the dust moved to the tips of the two scraping rollers is moved to the tip of the two scraping rollers. It is provided with a delivery portion formed so as to be extruded into the gap between the tips of the scraping rollers.
  • the above-mentioned suction tool can eliminate the state in which dust adheres to the scraping roller.
  • FIG. 1 It is a schematic side view of a cleaning machine. It is a schematic development perspective view of the suction tool configured so that it can be attached to a cleaning machine. It is a schematic diagram of the internal structure of a suction tool. It is a schematic vertical sectional view of a suction tool. It is a schematic plan view of the slide piece of the cover member configured so that it can be attached to the main body part of the housing of a suction tool. It is a schematic rear view of a slide piece. It is a schematic bottom view of a slide piece. It is a schematic bottom view of the cover member of a suction tool. It is a schematic diagram of the delivery part provided on the inner surface of a cover member. It is a schematic sectional drawing of a delivery part.
  • FIG. 1 is a schematic side view of the cleaning machine 101 to which the suction tool 100 is attached.
  • FIG. 2 is a schematic developed perspective view of the suction tool 100.
  • FIG. 3 is a schematic plan view showing the internal structure of the suction tool 100.
  • FIG. 4 is a schematic vertical sectional view of the suction tool 100. The cleaning machine 101 and the suction tool 100 will be described with reference to FIGS. 1 to 4.
  • the cleaning machine 101 includes a cleaning main body 102 having a suction fan (not shown) and a motor for driving the suction fan (not shown), a hose 103 extending from the cleaning main body 102 to the suction tool 100, and the hose 103. It is provided with an operation unit 104 provided on the hose 103. The tip of the hose 103 is configured to be connectable to the suction tool 100. The operation unit 104 is configured to operate the cleaning main body unit 102 and the suction tool 100 in response to a user operation. The electrical wiring from the cleaning main body 102 and the suction tool 100 to the operation unit 104 is performed along the hose 103.
  • the suction tool 100 is attached to the tip of the hose 103 in order to obtain a suction area wider than the internal space of the hose 103.
  • the suction tool 100 is configured to suck in while scraping dust on the floor surface.
  • the suction tool 100 includes scraping rollers 131 and 132 including a housing 120 that partitions a suction space 110 that is opened downward so as to suck dust on the floor surface, and rotating shafts 320 and 321 held by the housing 120, respectively. And have.
  • the suction tool 100 has a drive mechanism 150 connected to these rotating shafts 320 and 321 respectively.
  • the housing 120 has a shape wider in the width direction than in the front-rear direction in order to obtain a suction space 110 wide in the width direction of the suction tool 100.
  • the suction space 110 is formed on the front side of the housing 120.
  • the housing 120 includes a main body portion 121 having a substantially C-shape that opens forward in a plan view, and a cover member 122 that is detachably configured with respect to the main body portion 121. Includes.
  • the housing 120 includes upper claws 141 to 144 for attaching the cover member 122 to the main body 121, a mounting plate 145, and a connecting portion 292.
  • the main body 121 has a pair of side portions 123, 124 provided at positions separated from each other so as to sandwich the suction space 110 in the width direction, and the rear side of the side portions 123, 124 and the suction space 110 (that is, the cleaning main body portion). It includes a rear portion 125 provided on the 102 side).
  • the side portions 123, 124 and the rear portion 125 have a hollow structure. The internal spaces of the side portions 123, 124 and the rear portion 125 are used to accommodate the drive mechanism 150 in the main body portion 121.
  • the rear portion 125 has an upper wall portion 191 and a rear wall portion 192, a front wall portion 240 (see FIG. 4), and a connection recess 193 used for connecting the hose 103 and the suction tool 100.
  • the upper wall portion 191 is provided in a substantially horizontal posture so as to block the internal space of the rear portion 125 from above.
  • the upper wall portion 191 has a predetermined thickness in the vertical direction and forms a leading edge surface 198 (see FIG. 2).
  • the rear wall portion 192 is configured to close the internal space of the rear portion 125 from the rear side. Specifically, the rear wall portion 192 is connected to the upper wall portion 191 in an upright posture opposite to the front edge surface 198, and forms a corner portion with the upper wall portion 191.
  • connection recess 193 is formed so as to be recessed forward and downward with respect to the corner portion formed by the rear wall portion 192 and the upper wall portion 191 at a substantially central position in the width direction of the housing 120.
  • the connection recess 193 is used to connect the suction tool 100 and the hose 103.
  • the connection recess 193 includes a pair of side wall portions 194 and 195 separated from each other in the width direction of the suction tool 100, and a lower wall portion 196 provided between the lower ends of these side wall portions 194 and 195.
  • An opening 197 (see FIG. 3) is formed in the lower wall portion 196.
  • a flow path 241 (see FIG. 4) extending from the opening 197 and connecting to the suction space 110 is formed in the rear portion 125 (not shown).
  • the opening 197 is a portion connected to the internal space of the hose 103.
  • the front wall portion 240 (see FIG. 4) is erected on the rear side of the front edge surface 198 of the upper wall portion 191 so as to partition the internal space of the suction space 110 from the rear portion 125. In other words, the front wall portion 240 forms the rear end of the suction space 110.
  • the above-mentioned flow path 241 is open on the front wall portion 240 (a substantially central position in the width direction of the suction tool 100).
  • the side portion 123 is provided so as to project forward from the left end portion of the rear portion 125.
  • the side portion 123 is a portion located on the left side with respect to the suction space 110.
  • the side portion 123 includes a curved wall portion 181 configured to close the internal space of the side portion 123 from above, a front wall portion 182 configured to close the internal space of the side portion 123 from the front side, and a side portion 123. It has an inner side wall portion 172 configured to close the internal space of the above from the suction space 110 side.
  • the curved wall portion 181 is integrated with the lower edge of the leading edge surface 198 at the left end portion of the leading edge surface 198, and extends forward and downward from the connecting portion with the leading edge surface 198.
  • the curved wall portion 181 is a portion on which the cover member 122 is placed.
  • the front wall portion 182 is provided in an upright posture under the curved wall portion 181.
  • the front wall portion 182 has a predetermined thickness in the front-rear direction, and has an upper end surface 183 protruding forward from the lower end of the curved wall portion 181.
  • the upper end surface 183 of the front wall portion 182 is used to support the lower end of the cover member 122.
  • An engaging hole portion 184 opened upward is formed on the upper end surface 183 of the front wall portion 182.
  • the engaging hole portion 184 is used to fix the lower portion of the cover member 122 to the main body portion 121.
  • the inner side wall portion 172 is provided in an upright posture on the left side of the suction space 110 so as to partition the left end of the suction space 110.
  • the inner side wall portion 172 has a predetermined thickness in the width direction of the suction tool 100.
  • the upper portion of the outer peripheral surface 185 of the inner side wall portion is adjacent to the right side with respect to the curved wall portion 181 and has a curved shape similar to that of the front wall portion 182.
  • the lower part of the outer peripheral surface 185 is adjacent to the right side with respect to the front wall portion 182, and takes an upright posture in the same manner as the front wall portion 182.
  • the inner side wall portion 172 is provided with a through hole and a recess.
  • the rotating shaft 320 of the scraping roller 131 is inserted through the through hole of the inner side wall portion 172.
  • a bearing 380 for the rotary shaft 320 is fitted in the recess of the inner side wall portion 172 from the suction space 110 side.
  • the through hole and the recess of the inner side wall portion 172 are arranged so that the rotary shaft 320 takes an inclined posture in which the tip of the rotary shaft 320 (the end on the suction space 110 side) is located in front of and below the base end of the rotary shaft 320. It is formed.
  • the right side portion 124 has a symmetrical structure with respect to the left side portion 123.
  • the description of the side portion 123 is incorporated into the side portion 124 in consideration of the symmetry of these side portions 123, 124.
  • the upper claws 141 to 144 and the mounting plate 145 project forward from the leading edge surface 198 of the upper wall portion 191.
  • the mounting plate 145 is a substantially triangular plate portion that protrudes from the leading edge surface 198 on the upper side of the suction space 110.
  • the mounting plate 145 has a length substantially equal to the suction space 110 in the width direction of the suction tool 100.
  • the mounting plate 145 is provided at a height position substantially equal to the upper end portion of the outer peripheral surface 185 of the inner side wall portion 172.
  • the left end of the mounting plate 145 is located at a position separated from the left inner side wall portion 172 on the right side, and a gap is formed between the left end of the mounting plate 145 and the left inner side wall portion 172.
  • the right end of the mounting plate 145 is located on the left side with respect to the inner side wall portion 172 on the right side, and a gap is formed between the right end of the mounting plate 145 and the inner side wall portion 172 on the right side.
  • the upper claw 141 protrudes forward from the leading edge surface 198 on the upper side of the gap between the left end of the mounting plate 145 and the upper end of the outer peripheral surface 185 of the inner side wall portion 172.
  • the upper claw 141 is located at a position higher than the upper end of the outer peripheral surface 185 of the inner side wall portion 172 and the upper surface of the mounting plate 145, and the upper end of the outer peripheral surface 185 of the upper claw 141 and the inner side wall portion 172 and the upper surface of the mounting plate 145.
  • An insertion space 291 is formed between the two. The insertion space 291 is used to attach the cover member 122 to the main body 121.
  • the upper claw 143 protrudes forward from the leading edge surface 198 at a position separated from the upper claw 141 on the left side.
  • the amount of protrusion of the upper claw 143 from the leading edge surface 198 is smaller than the amount of protrusion of the upper claw 141 from the leading edge surface 198.
  • the upper claws 142 and 144 project from the leading edge surface 198 under a layout symmetrical to the upper claws 141 and 143, respectively.
  • the description of the upper claws 141 and 143 is incorporated into the upper claws 142 and 144 in consideration of symmetry.
  • the cover member 122 is configured to close the suction space 110 from above.
  • the cover member 122 has a main plate portion 211 and a pair of fixed flap portions 212, 213.
  • the main plate portion 211 is a portion to be mounted on the mounting plate 145 when the cover member 122 is attached to the main body portion 121.
  • the main plate portion 211 is configured to close the front side and the upper side of the suction space 110, and has a length substantially equal to that of the suction space 110 in the width direction of the suction tool 100.
  • the main plate portion 211 has an upper plate portion 221 that is curved forward and downward with a curvature substantially equal to the upper portion of the side portion 123, and a lower plate portion 222 that projects downward from the lower end edge of the upper plate portion 221 and closes the front side of the suction space 110. And include.
  • the upper plate portion 221 covers the left and right upper claws 141 and 142 from above when the cover member 122 is attached to the main body portion 121.
  • the fixed flap portion 212 protrudes to the left from the left edge of the upper plate portion 221.
  • the fixed flap portion 212 is configured to be placed on the left side portion 123 when the cover member 122 is attached to the main body portion 121. That is, the fixed flap portion 212 has a curved shape that follows the curved shape of the outer peripheral surface 185 of the inner side wall portion 172 and the curved wall portion 181 of the front wall portion 171.
  • a groove 223 extending in the width direction of the suction tool 100 is formed at the upper end of the fixed flap portion 212.
  • the groove portion 223 is formed so as to allow the upper claw 143 to engage with the lower portion of the slide piece 216 in the groove portion 223. That is, the groove portion 223 is formed so that the upper claw 143 can protrude forward in the groove portion 223. Further, the groove portion 223 has a depth at the right end of the groove portion 223 so as to be connected to the insertion space 291 on the lower side of the upper claw 141.
  • the fixed flap portion 213 has a structure symmetrical to the fixed flap portion 212 with respect to the main plate portion 211.
  • the description of the fixed flap portion 212 is incorporated into the fixed flap portion 213 in consideration of symmetry.
  • connection portion 292 is provided on the cover member 122.
  • the connecting portion 292 includes slide pieces 216 and 217 arranged in the groove portions 223 of the fixed flap portions 212 and 213, respectively, and the lower claw portion 214 protruding downward from the lower edges of the fixed flap portions 212 and 213, respectively. 215 and is included.
  • the slide piece 216 is configured to be movable in the width direction of the suction tool 100 along the groove portion 223.
  • the slide piece 216 is located at a position protruding to the left from the left end edge of the fixed flap portion 212, and can be moved to the right from the position shown in FIG.
  • a schematic plan view of the slide piece 216 is shown in FIG.
  • a schematic rear view of the slide piece 216 is shown in FIG.
  • a schematic bottom view of the slide piece 216 is shown in FIG.
  • the cover member 122 will be further described with reference to FIGS. 2, 5 to 7.
  • the slide piece 216 includes a substantially rectangular plate-shaped operation piece 231 operated by the user, a protruding piece 232 protruding to the right from the right end of the operation piece 231 and an engaging portion 233 provided on the lower surface of the operation piece 231. Includes.
  • the protruding piece 232 is inserted into the insertion space 291 below the upper claw 141 through the opening formed at the right end of the groove 223 when the user operates the operation piece 231 to move the slide piece 216 to the right. It is configured (in FIG. 5, the upper claw 141 is shown by a dotted line). At this time, the upper claw 141 is located between the main plate portion 211 of the cover member 122 and the projecting piece 232. As shown in FIG. 5, when the slide piece 216 is moved to the right, the upper claw 141 is in a state of protruding forward beyond the protruding piece 232.
  • the engaging portion 233 is formed at a position where it engages with the upper claw 143 when the user operates the operation piece 231 to move the slide piece 216 to the right.
  • the engaging portion 233 has a lower plate portion 235 provided at a position downwardly separated from the lower surface of the operation piece 231 and a connecting plate portion 236 connecting the lower plate portion 235 and the upper claw 143. ing.
  • the upper claw 143 enters the space formed between the lower plate portion 235 and the lower surface of the operation piece 231.
  • the lower claw portion 214 protrudes downward from the lower edge of the fixed flap portion 212.
  • the lower claw portion 214 is fitted into the engaging hole portion 184 of the left side portion 123 when the cover member 122 is attached to the main body portion 121.
  • the lower claw portion 215 and the slide piece 217 have a symmetrical structure with the lower claw portion 214 and the slide piece 216.
  • the description of the lower claw portion 214 and the slide piece 216 is incorporated into the lower claw portion 215 and the slide piece 217 in consideration of symmetry.
  • the drive mechanism 150 has a pair of motors 151 and 152 and a pair of drive belts 153 and 154 (see FIG. 3).
  • the motors 151, 152 and the drive belts 153, 154 are arranged in the internal space of the main body 121.
  • the motor 151 has a main body portion 155 and a motor shaft 156 protruding to the left from the main body portion 155.
  • the motor 151 is arranged in the internal space of the rear portion 125 on the left side with respect to the connection recess 193.
  • the motor 151 is fixed so that the motor shaft 156 is substantially parallel to the rotating shaft 320 of the scraping roller 131.
  • a pulley 157 is attached to the motor shaft 156. Further, a pulley 340 is attached to the base end portion of the rotary shaft 320.
  • the drive belt 153 extends from the internal space of the rear portion 125 to the internal space of the side portion 123, and is hung around the pulleys 157 and 340.
  • the motor 152 and the drive belt 154 are arranged in the internal space on the right side of the connection recess 193.
  • the motor 152 and the drive belt 154 on the right side have a symmetrical structure with respect to the motor 151 and the drive belt 153 on the left side.
  • the description of the motor 151 and the drive belt 153 on the left side is incorporated into the motor 152 and the drive belt 154 on the right side in consideration of symmetry.
  • the scraping roller 131 includes a hollow tapered tubular portion 311 connected to the tip portion of the rotary shaft 320, and a plurality of brush portions 312 provided on the outer peripheral surface of the tapered tubular portion 311. have.
  • the tapered cylindrical portion 311 is a tubular portion extended in the suction space 110. Specifically, the tapered tubular portion 311 extends from the proximal end adjacent to the right side of the inner side wall portion 172 toward the central position of the suction space 110 in the width direction. The tip of the tapered cylinder portion 311 is located on the left side with respect to the central position of the suction space 110.
  • the tapered cylinder portion 311 has a tapered shape that gradually narrows from the base end to the tip end.
  • the base end of the tapered cylinder portion 311 is open toward the inner side wall portion 172, and the tip portion of the rotary shaft 320 is inserted into the inside of the tapered cylinder portion 311 through the opening of the base end.
  • the tapered cylinder portion 311 has an internal structure (for example, a spline coupling) in which the tapered cylinder portion 311 is connected to the rotating shaft 320 so as to rotate coaxially with the rotating shaft 320.
  • the tapered cylinder portion 311 is held in the housing 120 via the rotary shaft 320 by being connected to the rotary shaft 320.
  • the tapered cylinder portion 311 has an inclined posture similar to that of the rotating shaft 320. That is, the tapered cylinder portion 311 is in an inclined posture so that the rotation center of the tip of the tapered cylinder portion 311 is located forward and downward with respect to the rotation center of the base end of the tapered cylinder portion 311.
  • the brush portion 312 is a linear member that rubs backward against the floor surface when the scraping roller 131 is rotated in the direction of the arrow in FIG.
  • These brush portions 312 are made of a member that is soft enough not to damage the floor surface when rubbed against the floor surface.
  • the brush portion 312 extends from the base end of the tapered cylinder portion 311 toward the tip on the outer peripheral surface of the tapered cylinder portion 311 and protrudes from the outer peripheral surface of the tapered cylinder portion 311.
  • the amount of protrusion of the brush portion 312 from the outer peripheral surface of the tapered cylinder portion 311 is substantially constant over the entire length of the brush portion 312.
  • the brush portion 312 is fixed to the outer peripheral surface of the tapered cylinder portion 311 in a spirally twisted posture.
  • the brush portion 312 constitutes the outer peripheral portion of the scraping roller 131 together with the outer peripheral surface of the tapered cylinder portion 311.
  • the scraping roller 132 has a symmetrical structure with the scraping roller 131.
  • the description of the scraping roller 131 is incorporated into the scraping roller 132 in consideration of symmetry.
  • the tip of the scraping roller 131 is located on the left side with respect to the center position of the suction space 110 in the width direction, whereas the tip of the scraping roller 132 is located with respect to the center position of the suction space 110 in the width direction. Is located on the right side. Therefore, a gap is formed between the tips of the scraping rollers 131 and 132. Behind this void, a flow path 241 formed in the rear 125 of the housing 120 is open (see FIG. 4).
  • the delivery unit 250 (see FIG. 8) that sends out the dust adhering to the outer peripheral portions of the scraping rollers 131 and 132 toward the gap between the tips of the scraping rollers 131 and 132 is the inner surface (suction) of the cover member 122. It is provided on the surface facing the space 110).
  • FIG. 8 is a schematic bottom view of the cover member 122.
  • FIG. 9 is a schematic plan view showing a schematic positional relationship between the delivery unit 250 and the scraping roller 132.
  • FIG. 10 is a schematic cross-sectional view of the cover member 122 along the XX line shown in FIG. The delivery unit 250 will be described with reference to FIGS. 8 to 10.
  • the delivery unit 250 has a plurality of protrusions 251 to 255 protruding from the inner surface of the cover member 122 at intervals in the width direction of the suction tool 100.
  • the ridge portion 251 protrudes from the inner surface of the cover member 122 at a position corresponding to the gap between the tips of the scraping rollers 131 and 132.
  • the ridge portion 252 projects from the inner surface of the cover member 122 at a position spaced to the left from the ridge portion 251.
  • the ridge portion 253 projects from the inner surface of the cover member 122 at a position spaced to the left from the ridge portion 252.
  • the ridges 254 and 255 project from the inner surface of the cover member 122 at positions symmetrical to the ridges 252 and 253 with respect to the ridges 251.
  • the ridge portion 251 has a substantially Y-shape in a plan view.
  • the ridges 251 include a pair of tilted portions 261,262 and a central portion 263 that extends continuously from these tilted portions 261,262.
  • the central portion 263 is arranged at a position corresponding to the gap between the tips of the scraping rollers 131 and 132 (that is, a substantially central position of the cover member 122 in the width direction).
  • the inclined portion 261 sends out dust adhering to the outer peripheral portion of the scraping roller 131 to the central portion 263 when the scraping roller 131 rotates so that the outer peripheral surface of the tapered cylinder portion 311 moves forward in a plan view. It is extended in a slanted posture. Specifically, the inclined portion 261 extends toward the central portion 263 while inclining forward from the base end (rear end) on the upper side of the outer peripheral portion of the scraping roller 131. The inclined portion 261 extends diagonally forward from the contact portion 264 that vertically overlaps the outer peripheral portion of the scraping roller 131 and the contact portion 264 at a position that does not vertically overlap the outer peripheral portion of the scraping roller 131. It includes an extension portion 265.
  • the lower edge of the contact portion 264 has a curved shape so that the contact portion 264 bites into the brush portion 312 by a substantially constant amount (see FIG. 10).
  • the amount of bite of the contact portion 264 with respect to the brush portion 312 is sufficient to capture the dust adhering to the outer peripheral portion of the scraping roller 131, and is large enough not to generate excessively large resistance to the scraping roller 131. Is set to.
  • the contact portion 264 is provided to move the dust adhering to the brush portion 312 to the tip end side of the scraping roller 131 while contacting the brush portion 312.
  • the contact portion 264 is in contact with the brush portion 312, whereas the extension portion 265 is located at a position corresponding to the gap between the tips of the scraping rollers 131 and 132, and the outer peripheral portions of these scraping rollers 131 and 132 are located. Not in contact with.
  • the front end of the extension portion 265 is connected to the central portion 263. The amount of protrusion of the extending portion 265 from the inner surface of the cover member 122 gradually increases toward the connecting portion with the central portion 263 (that is, the front end of the extending portion 265).
  • the central portion 263 is bent with respect to the inclined portion 261 and extends forward.
  • the central portion 263 protrudes from the inner surface of the cover member 122 toward the central axis of the scraping rollers 131 and 132, and enters the gap between the tips of the scraping rollers 131 and 132.
  • the amount of protrusion of the central portion 263 from the inner surface of the cover member 122 is larger than the amount of protrusion of the contact portion 264 from the inner surface of the cover member 122.
  • the central portion 263 and the extension portion 265 constitute an extrusion portion 266 that pushes dust into a gap between the tips of the scraping rollers 131 and 132.
  • the inclined portion 262 is provided symmetrically with respect to the inclined portion 261 with respect to the central portion 263 so as to send dust adhering to the outer peripheral portion of the scraping roller 132 to the gap between the tips of the scraping rollers 131 and 132. ..
  • the description of the inclined portion 261 is incorporated into the inclined portion 262 in consideration of symmetry.
  • the ridge portion 252 is extended in a posture substantially parallel to the contact portion 264.
  • the ridge portion 252 is located upstream of the contact portion 264 in the rotation direction of the scraping roller 131 (direction of the arrow shown in FIG. 9) from the tip end (front end) of the ridge portion 252 to a predetermined section. positioned.
  • the portion of the ridge portion 252 that overlaps with the contact portion 264 in the rotational direction of the scraping roller 131 is referred to as "superimposing portion 271" in the following description.
  • the superimposing portion 271 is provided for passing dust to the contact portion 264.
  • the remaining portion is located on the proximal end side of the scraping roller 131 with respect to the proximal end (rear end) of the contact portion 264 in the axial direction of the scraping roller 131, and with the contact portion 264 in the rotational direction of the scraping roller 131. It does not overlap.
  • This portion is referred to as "capture unit 272" in the following description.
  • the catching portion 272 is provided to catch dust adhering to the base end side of the scraping roller 131 rather than the base end of the contact portion 264.
  • the lower edge of the ridge portion 252 has a curved shape so that the ridge portion 252 bites into the brush portion 312 by a substantially constant amount.
  • the amount of protrusion of the ridge portion 252 from the inner surface of the cover member 122 is the contact portion of the ridge portion 252 and the contact portion 264 so that a bite amount substantially equal to the bite amount of the contact portion 264 with respect to the brush portion 312 can be obtained. It is set in consideration of the difference in the thickness of the scraping roller 131 in the above. Specifically, the scraping roller 131 is thicker in the contact portion with the ridge portion 252 than in the contact portion with the contact portion 264. Therefore, the protruding amount of the ridge portion 252 is smaller than the protruding amount of the contact portion 264 in order to obtain a bite amount substantially equal to the bite amount of the contact portion 264.
  • the ridge portion 253 is extended in a posture substantially parallel to the ridge portion 252.
  • the ridge portion 253 is located on the upstream side of the ridge portion 252 in the rotational direction of the scraping roller 131 from the tip end (front end) of the ridge portion 253 to a predetermined section.
  • the portion of the ridge portion 252 that overlaps the ridge portion 252 in the rotational direction of the scraping roller 131 is referred to as "superimposing portion 273" in the following description.
  • the superimposing portion 273 is provided for passing dust to the ridge portion 252.
  • the remaining portion is located on the proximal end side of the scraping roller 131 with respect to the proximal end (rear end) of the ridge portion 252 in the axial direction of the scraping roller 131, and the ridge portion in the rotational direction of the scraping roller 131. It does not overlap with 252.
  • This portion is referred to as "capture unit 274" in the following description.
  • the catching portion 274 is provided to catch dust adhering to the base end side of the scraping roller 131 rather than the base end of the ridge portion 252.
  • the lower edge of the ridge portion 253 has a curved shape so that the ridge portion 252 bites into the brush portion 312 by a substantially constant amount.
  • the protrusion amount of the ridge portion 253 from the inner surface of the cover member 122 is such that the ridge portion 253 bites into the brush portion 312 with a bite amount substantially equal to the bite amount of the ridge portion 252 with respect to the brush portion 312. It is smaller than the protrusion amount of the ridge portion 252.
  • the cleaning machine 101 When the operation unit 104 is operated, the cleaning machine 101 operates, and the suction force acts on the suction space 110 through the flow path 241 formed in the hose 103 and the rear portion 125 of the suction tool 100. As a result, dust on the floor surface flows into the suction space 110 through the downward opening of the suction space 110. After that, the dust is collected in the cleaning machine 101 through the flow path 241 and the hose 103.
  • the motor 151 built in the suction tool 100 operates, and the driving force of the motor 151 is transmitted to the rotating shaft 320 through the drive belt 153. Since the tip portion of the rotating shaft 320 is connected to the tapered cylinder portion 311 inside the tapered cylinder portion 311, the scraping roller 131 rotates together with the rotating shaft 320.
  • the brush portion 312 protruding from the outer peripheral surface of the tapered cylinder portion 311 scrapes the dust on the floor surface and sends it backward while contacting the floor surface. Since the flow path 241 is formed behind the scraping roller 131, a relatively strong suction force acts on the rear side of the scraping roller 131. Therefore, the dust sent backward by the brush portion 312 receives a relatively strong suction action and is sucked into the cleaning machine 101.
  • the scraping roller 131 When the scraping roller 131 is scraping dust on the floor surface, long dust may wind around the scraping roller 131 (see FIG. 11). Since the scraping roller 131 has a tapered shape that tapers toward the tip, the component force of the winding force of long dust tends to be directed toward the tip side of the scraping roller 131. Therefore, the long dust wrapped around the scraping roller 131 can be moved toward the tip of the scraping roller 131.
  • the scraping roller 131 becomes thinner toward the tip, the winding force of long dust tends to be smaller on the tip side of the scraping roller 131 than on the base end side of the scraping roller 131. Therefore, the component force for moving the dust wrapped around the scraping roller 131 toward the tip of the scraping roller 131 tends to decrease as the dust approaches the tip of the scraping roller 131.
  • the effect of moving dust toward the tip side due to the tapered shape of the scraping roller 131 is small near the tip of the scraping roller 131, but this moving effect is compensated by the delivery unit 250. The effect of moving dust by the delivery unit 250 will be described below.
  • the dust When dust adheres to the position of the point P1 shown in FIG. 9, when the scraping roller 131 rotates, the dust is a protrusion located on the most proximal side of the scraping roller 131 in the delivery portion 250. It is captured by the portion on the base end (rear end) side of the portion 253 (that is, the capture portion 274). As the scraping roller 131 rotates, the dust moves diagonally forward according to the inclination of the ridge portion 253 and reaches the tip end (front end) of the ridge portion 253 (the position of the point P2 in FIG. 9). The position of the point P2 in FIG. 9 is on the upstream side of the ridge portion 252 in the rotation direction of the scraping roller 131.
  • the tip (front end) of the ridge portion 253 is an overlapping portion 273 that overlaps the ridge portion 252 provided on the tip side of the scraping roller 131 with respect to the ridge portion 253 in the rotation direction of the scraping roller 131. Therefore, when the scraping roller 131 further rotates with the dust adhering to the outer peripheral portion of the scraping roller 131, the dust comes into contact with the ridge portion 252 in the rotation direction of the scraping roller 131 (point in FIG. 9). Move to the position of P3). When the scraping roller 131 further rotates, the dust reaches the tip end (front end) of the ridge portion 252 (the position of the point P4 in FIG. 9) according to the inclination of the ridge portion 252. The position of the point P4 in FIG. 9 is on the upstream side of the contact portion 264 in the rotation direction of the scraping roller 131.
  • the tip (front end) of the ridge portion 252 is an overlapping portion 271 that overlaps the contact portion 264 provided on the tip side of the scraping roller 131 with respect to the ridge portion 252 in the rotation direction of the scraping roller 131. Therefore, when the scraping roller 131 further rotates with the dust adhering to the outer peripheral portion of the scraping roller 131, the dust comes into contact with the contact portion 264 in the rotation direction of the scraping roller 131 (point P5 in FIG. 9). Move to (position).
  • the dust moves toward the gap between the tips of the scraping rollers 131 and 132 according to the inclination of the contact portion 264.
  • the extruded portion 266 extends the gap between the scraping rollers 131 and 132 with a larger amount of protrusion than the other portions of the sending portion 250. Therefore, the dust is pushed out into the gap between the tips of the scraping rollers 131 and 132 by the extrusion portion 266.
  • the flow path 241 is opened on the rear side of the gap between the tips of the scraping rollers 131 and 132 by the extrusion portion 266. Therefore, the dust extruded into the gap between the tips of the scraping rollers 131 and 132 by the extrusion portion 266 receives the suction force from the flow path 241 and is collected by the cleaning machine 101 through the flow path 241 and the hose 103. ..
  • the ability to move dust due to the tapered shape of the scraping roller 131 is weaker than that of the base end side of the scraping roller 131.
  • dust collects near the tip of the scraping roller 131 and a mass of dust is formed near the scraping roller 131.
  • a part of the dust mass adheres to the outer peripheral portion of the scraping roller 131, and the remaining portion protrudes into the gap between the scraping rollers 131 and 132.
  • the portion protruding into the gap between the scraping rollers 131 and 132 is formed in the gap between the scraping rollers 131 and 132 by the extrusion portion 266. Is pushed out. At this time, the portion of the dust mass adhering to the outer peripheral portion of the scraping roller 131 is pulled toward the tip end side of the scraping roller 131. Therefore, the movement of dust to the tip end side of the scraping roller 131 is supplemented by the delivery unit 250.
  • the amount of protrusion of the contact portion 264 and the ridge portion 252,253 is set according to the tapered shape of the scraping roller 131, and the amount of bite of the contact portion 264 and the ridge portion 252,253 with respect to the brush portion 312 is substantially mutual. Are equal. Since this biting amount is set so as not to give an excessively large resistance to the rotation of the scraping roller 131, an excessively large load is not applied to the motor 151 for driving the scraping roller 131. ..
  • the cover member 122 is configured to be removable from the main body unit 121, the user can easily inspect the transmission unit 250 by removing the cover member 122 from the main body unit 121 and turning it upside down. be able to. At this time, since the suction space 110 is opened upward, the user can access the scraping rollers 131 and 132 from above the suction space 110 to inspect and maintain the scraping rollers 131 and 132. ..
  • the lower part of the cover member 122 is fixed to the main body portion 121 by the user inserting the lower claw portions 214 and 215 of the cover member 122 into the engaging hole portions 184 of the side portions 123 and 124, respectively. After that, when the user slides the slide pieces 216 and 217 from the position shown in FIG. 2 toward the center position of the cover member 122 in the width direction, the upper portion of the cover member 122 is also fixed to the main body portion 121.
  • the engaging portion 233 of the slide pieces 216 and 217 protrudes forward from the leading edge surface 198 of the upper wall portion 191 of the housing 120. Engage with the upper claws 143 and 144.
  • the protruding piece 232 of the slide piece 216 protrudes from the right end of the groove portion 223 of the fixed flap portion 212 and enters the insertion space 291 below the upper claw 141.
  • the protruding piece 232 of the slide piece 217 protrudes from the left end of the groove portion 223 of the fixed flap portion 212 and enters the insertion space 291 below the upper claw 142.
  • the cover member 122 is appropriately fixed to the main body portion 121.
  • the user sets the cover member 122 to the main body portion 121 so that the cover member 122 closes the suction space 110 from above. It is possible that it will be installed on top.
  • FIG. 12 shows a schematic cross-sectional view of the cover member 122 around the right end of the groove portion 223 on the left side when the lower claw portions 214 and 215 are inserted into the engagement hole portions 184, respectively.
  • a schematic cross-sectional view of 122 is shown in FIG. In FIGS. 12 and 13, the protruding piece 232 of the slide piece 216 is in the position shown in FIG.
  • the entire protruding piece 232 is below the upper claw portion 141 and overlaps the insertion space 291 in the moving direction of the slide piece 216. There is. That is, the protruding piece 232 and the upper claw 141 do not overlap in the moving direction of the slide piece 216.
  • the cover member 122 is installed at a position shifted forward from the position shown in FIG. Further, since the lower claw portions 214 and 215 are not inserted downward into the engaging hole portion 184, the cover member 122 is installed at a position raised above the position shown in FIG. Since the position of the cover member 122 is displaced forward and upward with respect to the position of the cover member 122 shown in FIG. 12, the protruding piece 232 of the slide piece 216 is also front side with respect to the position of the protruding piece 232 shown in FIG. And it shifts to the upper side.
  • the upper claw 141 is configured so as to overlap the slide piece 216 in the moving direction with respect to the protruding piece 232 shifted to the front side and the upper side. That is, the tip of the upper claw 141 is located on the front side with respect to the protruding piece 232 as shown in FIG. Therefore, even if the protruding piece 232 is in a position shifted forward, as shown in FIG. 13, the upper claw 141 is partially provided in the moving direction of the protruding piece 232 and the slide piece 216 in the position shifted upward. Overlap. When the user moves the slide piece 216 to the right in the state shown in FIG.
  • the tip of the protruding piece 232 abuts on the left side surface of the upper claw 141, and the movement of the slide piece 216 is prevented. As a result, the user can easily notice that the cover member 122 is not properly installed in the main body portion 121.
  • the ridge portion 251 arranged at a position corresponding to the gap between the tips of the scraping rollers 131 and 132 is configured to remove dust from both the scraping rollers 131 and 132. ..
  • two ridges 256, 257 may be provided at positions corresponding to the gaps between the tips of the scraping rollers 131, 132.
  • the ridge portion 256 is configured to remove dust at the tip of the scraping roller 131
  • the ridge portion 257 is configured to remove dust from the tip of the scraping roller 132.
  • the delivery unit 250 is provided on the inner surface of the cover member 122.
  • the delivery portion 250 may be provided on the front wall portion 240 (the portion above or below the portion where the flow path 241 is opened) of the rear portion 125 of the housing 120.
  • the housing 120 has a main body portion 121 and a cover member 122 that can be removed from the main body portion 121.
  • the housing 120 may have a portion corresponding to the cover member 122 as a part of the main body portion 121, and the portion corresponding to the cover member 122 may have a structure inseparable from other parts. In this case, the housing 120 is structurally simplified.
  • the above-described embodiment mainly includes the following configurations.
  • the suction tool is configured to be attached to a cleaning machine that sucks dust.
  • the suction tool is configured to be rotatable so as to scrape dust, and two scraping rollers arranged at intervals in the width direction of the suction tool so as to form a gap between the tips.
  • the dust adhering to the outer peripheral portions of the two scraping rollers is moved toward the gap between the tips of the two scraping rollers, and the dust moved to the tips of the two scraping rollers is moved to the tip of the two scraping rollers. It is provided with a delivery portion formed so as to be extruded into the gap between the tips of the scraping rollers.
  • the dust adhering to the outer peripheral portions of the two scraping rollers is sent out to the tip side by the sending portion.
  • the dust that has reached the tips of these scraping rollers is pushed out into the gap between the tips of these scraping rollers by the delivery unit, and the dust adhering to the outer peripheral portion of the scraping rollers is removed.
  • the suction tool may further include a housing configured to partition the suction space open downward and to hold the two scraping rollers in the suction space.
  • the delivery portion may include a ridge portion protruding from the inner surface of the housing into the suction space. The ridge portion is tilted so as to move dust adhering to one of the two scraping rollers toward the tip of the one scraping roller as the one scraping roller rotates. It may include a contact portion that contacts the outer peripheral portion of one scraping roller and an extrusion portion that extends from the contact portion so as to enter the gap between the tips of the two scraping rollers.
  • the dust adhering to the outer peripheral portion of one scraping roller is sent to the tip of the scraping roller by the contact portion of the ridge portion.
  • the dust is then pushed into the gap between the tips of the two scraping rollers by the extruded portion of the ridge.
  • the portion of the dust protruding into the gap is pushed into the void by the ridges.
  • the dust portion adhering to the outer peripheral portion is pulled toward the tip end side of the scraping roller. As a result, the removal of dust from the outer peripheral portion of the scraping roller is promoted.
  • the amount of protrusion of the contact portion from the inner surface of the housing may be smaller than the amount of protrusion of the extrusion portion from the inner surface of the housing.
  • the protrusion amount of the contact portion of the ridge portion is relatively small, so that the ridge portion does not hit the scraping roller excessively strongly. That is, the ridges do not create excessive resistance to the rotation of the scraping roller.
  • the delivery portion may project from the inner surface of the housing so as to capture dust adhering to the one scraping roller further on the proximal end side than the proximal end of the contact portion. It may include a part.
  • the other ridge portion may be configured to send dust to the upstream side of the contact portion in the rotation direction of the one scraping roller.
  • the dust adhering to the outer peripheral portion of the scraping roller on the proximal end side of the proximal end side of the contact portion of the ridge portion is first captured by the other ridge portions.
  • This dust is sent out to the upstream side of the contact portion in the rotation direction of the scraping roller by another ridge portion.
  • this dust circulates around the axis of the scraping roller by the rotation of the scraping roller while adhering to the outer peripheral portion of the scraping roller, it comes into contact with the contact portion of the ridge and moves to the tip side of the scraping roller. Further urged.
  • the scraping roller may have a tapered shape that tapers toward the tip.
  • the amount of protrusion of the contact portion may be larger than the amount of protrusion of the other ridge portion.
  • the scraping roller since the scraping roller has a tapered shape that tapers toward the tip, the component force of the dust winding force wound around the scraping roller is directed toward the tip of the scraping roller. Cheap. Therefore, the movement of dust toward the tip of the scraping roller is promoted not only by the delivery portion but also by the tapered shape of the scraping roller.
  • the contact portion with respect to the scraping roller is excessively hit. It doesn't get weak.
  • the dust winding force on the tip side of the scraping roller tends to be smaller than the dust winding force on the base end side of the scraping roller.
  • the component force of the dust winding force on the tip side of the scraping roller is also reduced, and the effect of delivering dust due to the tapered shape of the scraping roller is reduced. This reduction in delivery effect is compensated for by the contact portion coming into contact with the outer peripheral portion of the scraping roller.
  • the suction tool may further include a housing that partitions the suction space that opens downward.
  • the housing has a main body portion configured to hold the scraping roller in the suction space, and a cover provided so as to close the suction space from above and removable from the main body portion. It may include a member.
  • the delivery portion may be provided on the inner surface of the cover member.
  • the cover member closes the suction space from above and prevents the user from unintentionally contacting the scraping roller.
  • the cover member When the cover member is removed from the main body portion, the user can access the scraping roller held in the suction space from above. Therefore, the inspection and maintenance of the scraping roller becomes easy.
  • the user by turning over the cover member removed from the main body portion, the user can visually recognize the delivery portion provided on the inner surface of the cover member, and the inspection of the delivery portion becomes easy.
  • the suction tool may further include a connecting portion configured to connect the cover member to the main body portion.
  • the connecting portion may include a lower claw portion protruding from the lower edge of the cover member and a slide piece configured to be slidable in a predetermined direction on the cover member on the upper side of the lower claw portion. .. When the slide piece is moved in the predetermined direction while the lower claw portion is fitted into the main body portion and the lower claw portion is fitted into the engagement hole portion, the slide piece is fitted. An insertion space into which is inserted may be formed.
  • the slide piece is inserted in the insertion space. It may be configured not to be inserted into.
  • the cover member when the cover member is attached to the main body portion, the lower claw portion protruding downward from the lower edge of the cover member is fitted into the engaging hole. In this state, when the user slides the slide piece provided on the cover member in a predetermined direction, the slide piece is inserted into the insertion space of the main body portion. As a result, the cover member is connected to the main body portion by the lower claw portion and the slide piece.
  • the user may try to install the cover member on the main body so that the cover member closes the suction space when the lower claw part is not fitted in the engaging hole part. In this case, the user does not insert the slide piece into the insertion space. Therefore, the user can easily notice that the mounting state of the cover member with respect to the main body portion is not correct.
  • the principle of this embodiment is suitably used for an apparatus used for cleaning work.

Abstract

The present application discloses a suction tool attachable to a cleaning apparatus for suctioning dust. This suction tool comprises: two scraper rollers which are each rotatably configured so as to scrape the dust, and which are disposed apart from each other in the width direction of the suction tool such that a gap is formed between tips thereof; and a sending out part formed so as to move dust stuck to outer circumferential parts of the two scraper rollers toward the gap between the tips of the two scraper rollers, and to push dust which has been moved to the tips of the two scraper rollers out to the gap between the tips of the two scraper rollers.

Description

吸込具Suction tool
　本発明は、吸引式の清掃機に取り付けられる吸込具に関する。 The present invention relates to a suction tool attached to a suction type cleaning machine.
　吸引式の清掃機に取り付けられる様々な吸込具が開発されている（特許文献１を参照）。特許文献１の吸込具は、床面上に塵埃を吸い込むように下方に開口した吸込空間が区画されたハウジングと、吸込空間内で回転駆動される掻取ローラとを備えている。 Various suction tools that can be attached to suction-type cleaners have been developed (see Patent Document 1). The suction tool of Patent Document 1 includes a housing in which a suction space opened downward so as to suck dust on the floor surface is partitioned, and a scraping roller that is rotationally driven in the suction space.
　ハウジングには、ハウジングの幅方向における略中心において吸込空間に向けて開口した流路が形成されている。この流路は、吸込空間に吸い込まれた塵埃を清掃機に流すために設けられている。 The housing is formed with a flow path that opens toward the suction space at approximately the center in the width direction of the housing. This flow path is provided to flush the dust sucked into the suction space to the cleaning machine.
　掻取ローラは、吸込空間の下端の開口を通じて床面に接触するように吸込空間内で保持されている。掻取ローラは、吸込空間内においてハウジングの幅方向に延設され、ハウジングによって両持ち支持されている。 The scraping roller is held in the suction space so as to come into contact with the floor surface through the opening at the lower end of the suction space. The scraping roller extends in the width direction of the housing in the suction space and is supported by the housing.
　掻取ローラの外周部に付着した塵埃の除去を促すために、特許文献１の吸込具は、ハウジングの内面に設けられた複数の突条部を有している。これらの突条部は、掻取ローラの外周部に付着した塵埃を、ハウジングの幅方向における中央位置に向けて移動させるように傾斜した姿勢でハウジングの内面から突出し、掻取ローラの外周部に接触している。 The suction tool of Patent Document 1 has a plurality of ridges provided on the inner surface of the housing in order to promote the removal of dust adhering to the outer peripheral portion of the scraping roller. These ridges project from the inner surface of the housing in an inclined posture so as to move the dust adhering to the outer peripheral portion of the scraping roller toward the center position in the width direction of the housing, and protrude to the outer peripheral portion of the scraping roller. Are in contact.
　掻取ローラが回転すると、掻取ローラの外周部に付着した塵埃は、突条部の傾斜に従ってハウジングの幅方向における中央位置に移動する。ハウジングの幅方向における中央位置では、上述の流路が開口しているので、中央位置に移動した塵埃は、比較的強い吸引力を受けて流路に吸い込まれる。 When the scraping roller rotates, the dust adhering to the outer peripheral portion of the scraping roller moves to the center position in the width direction of the housing according to the inclination of the ridge portion. Since the above-mentioned flow path is open at the center position in the width direction of the housing, the dust moved to the center position receives a relatively strong suction force and is sucked into the flow path.
　長い塵埃（たとえば、毛髪）が掻取ローラに巻き付いている場合、巻き付いた塵埃を掻取ローラの軸方向に移動させ、強い吸引力を受ける位置に到達させたとしても、当該塵埃が掻取ローラから除去されないことがある。この場合、掻取ローラに巻き付いた塵埃が掻取ローラの長手方向における中央位置に溜まることになる。 When long dust (for example, hair) is wrapped around the scraping roller, even if the wrapped dust is moved in the axial direction of the scraping roller to reach a position where it receives a strong suction force, the dust is still wrapped around the scraping roller. May not be removed from. In this case, the dust wrapped around the scraping roller collects at the center position in the longitudinal direction of the scraping roller.
特開２０００－１６６８２６号公報Japanese Unexamined Patent Publication No. 2000-166826
　本発明は、塵埃が掻取ローラに付着した状態を解消することができる吸込具を提供することを目的とする。 An object of the present invention is to provide a suction tool capable of eliminating a state in which dust adheres to a scraping roller.
　本発明の一の局面に係る吸込具は、塵埃を吸引する清掃機に取り付けられるように構成されている。吸込具は、塵埃を掻き取るようにそれぞれ回転可能に構成されているとともに先端間に空隙が形成されるように前記吸込具の幅方向において間隔を空けて配置された２つの掻取ローラと、前記２つの掻取ローラの外周部に付着した塵埃を前記２つの掻取ローラの前記先端間の前記空隙に向けて移動させるとともに、前記２つの掻取ローラの前記先端に移動した塵埃を前記２つの掻取ローラの前記先端間の前記空隙に押し出すように形成された送出部とを備えている。 The suction tool according to one aspect of the present invention is configured to be attached to a cleaning machine that sucks dust. The suction tool is configured to be rotatable so as to scrape dust, and two scraping rollers arranged at intervals in the width direction of the suction tool so as to form a gap between the tips. The dust adhering to the outer peripheral portions of the two scraping rollers is moved toward the gap between the tips of the two scraping rollers, and the dust moved to the tips of the two scraping rollers is moved to the tip of the two scraping rollers. It is provided with a delivery portion formed so as to be extruded into the gap between the tips of the scraping rollers.
　上述の吸込具は、塵埃が掻取ローラに付着した状態を解消することができる。 The above-mentioned suction tool can eliminate the state in which dust adheres to the scraping roller.
　本発明の目的、特徴及び利点は、以下の詳細な説明と添付図面とによって、より明白となる。 The object, features and advantages of the present invention will be made clearer by the following detailed description and accompanying drawings.
清掃機の概略的な側面図である。It is a schematic side view of a cleaning machine. 清掃機に取付可能に構成された吸込具の概略的な展開斜視図である。It is a schematic development perspective view of the suction tool configured so that it can be attached to a cleaning machine. 吸込具の内部構造の概略図である。It is a schematic diagram of the internal structure of a suction tool. 吸込具の概略的な縦断面図である。It is a schematic vertical sectional view of a suction tool. 吸込具のハウジングの本体部に取付可能に構成されたカバー部材のスライド片の概略的な平面図である。It is a schematic plan view of the slide piece of the cover member configured so that it can be attached to the main body part of the housing of a suction tool. スライド片の概略的な背面図である。It is a schematic rear view of a slide piece. スライド片の概略的な底面図である。It is a schematic bottom view of a slide piece. 吸込具のカバー部材の概略的な底面図である。It is a schematic bottom view of the cover member of a suction tool. カバー部材の内面に設けられた送出部の概略図である。It is a schematic diagram of the delivery part provided on the inner surface of a cover member. 送出部の概略的な断面図である。It is a schematic sectional drawing of a delivery part. 塵埃が掻取ローラに巻き付いたときに塵埃に作用する力を表す概略図である。It is a schematic diagram which shows the force acting on the dust when the dust is wound around a scraping roller. カバー部材の概略的な断面図である。It is a schematic cross-sectional view of a cover member. カバー部材の概略的な断面図である。It is a schematic cross-sectional view of a cover member. 他の送出部の概略図である。It is a schematic diagram of another sending part.
　図１は、吸込具１００が取り付けられた清掃機１０１の概略的な側面図である。図２は、吸込具１００の概略的な展開斜視図である。図３は、吸込具１００の内部構造を表す概略的な平面図である。図４は、吸込具１００の概略的な縦断面図である。図１乃至図４を参照して、清掃機１０１及び吸込具１００が説明される。 FIG. 1 is a schematic side view of the cleaning machine 101 to which the suction tool 100 is attached. FIG. 2 is a schematic developed perspective view of the suction tool 100. FIG. 3 is a schematic plan view showing the internal structure of the suction tool 100. FIG. 4 is a schematic vertical sectional view of the suction tool 100. The cleaning machine 101 and the suction tool 100 will be described with reference to FIGS. 1 to 4.
　清掃機１０１は、吸引ファン（図示せず）や吸引ファンを駆動するモータ（図示せず）を内蔵する清掃本体部１０２と、清掃本体部１０２から吸込具１００へ延設されたホース１０３と、ホース１０３に設けられた操作部１０４とを備えている。ホース１０３の先端部は、吸込具１００に接続可能に構成されている。操作部１０４は、ユーザの操作を受けて、清掃本体部１０２及び吸込具１００を作動させるように構成されている。清掃本体部１０２及び吸込具１００から操作部１０４への電気的な配線は、ホース１０３に沿って行われている。 The cleaning machine 101 includes a cleaning main body 102 having a suction fan (not shown) and a motor for driving the suction fan (not shown), a hose 103 extending from the cleaning main body 102 to the suction tool 100, and the hose 103. It is provided with an operation unit 104 provided on the hose 103. The tip of the hose 103 is configured to be connectable to the suction tool 100. The operation unit 104 is configured to operate the cleaning main body unit 102 and the suction tool 100 in response to a user operation. The electrical wiring from the cleaning main body 102 and the suction tool 100 to the operation unit 104 is performed along the hose 103.
　吸込具１００は、ホース１０３の内部空間よりも幅広の吸引領域を得るためにホース１０３の先端に取り付けられている。吸込具１００は、床面上の塵埃を掻き取りながら吸い込むように構成されている。 The suction tool 100 is attached to the tip of the hose 103 in order to obtain a suction area wider than the internal space of the hose 103. The suction tool 100 is configured to suck in while scraping dust on the floor surface.
　吸込具１００は、床面上の塵埃を吸い込むように下方に開口した吸込空間１１０を区画しているハウジング１２０と、ハウジング１２０によって保持された回転シャフト３２０，３２１をそれぞれ含む掻取ローラ１３１，１３２とを有している。加えて、吸込具１００は、これらの回転シャフト３２０，３２１にそれぞれ接続された駆動機構１５０を有している。 The suction tool 100 includes scraping rollers 131 and 132 including a housing 120 that partitions a suction space 110 that is opened downward so as to suck dust on the floor surface, and rotating shafts 320 and 321 held by the housing 120, respectively. And have. In addition, the suction tool 100 has a drive mechanism 150 connected to these rotating shafts 320 and 321 respectively.
　ハウジング１２０は、吸込具１００の幅方向に広い吸込空間１１０を得るために前後方向よりも幅方向に広い形状を有している。吸込空間１１０は、ハウジング１２０の前側に形成されている。 The housing 120 has a shape wider in the width direction than in the front-rear direction in order to obtain a suction space 110 wide in the width direction of the suction tool 100. The suction space 110 is formed on the front side of the housing 120.
　ハウジング１２０は、図２に示されるように、平面視において前方に開口した略Ｃ字形状を有している本体部１２１と、本体部１２１に対して着脱可能に構成されたカバー部材１２２とを含んでいる。加えて、ハウジング１２０は、カバー部材１２２を本体部１２１に取り付けるための上爪１４１～１４４、載置板１４５及び接続部２９２を含んでいる。 As shown in FIG. 2, the housing 120 includes a main body portion 121 having a substantially C-shape that opens forward in a plan view, and a cover member 122 that is detachably configured with respect to the main body portion 121. Includes. In addition, the housing 120 includes upper claws 141 to 144 for attaching the cover member 122 to the main body 121, a mounting plate 145, and a connecting portion 292.
　本体部１２１は、吸込空間１１０を幅方向に挟むように互いに離間した位置に設けられた一対の側部１２３，１２４と、側部１２３，１２４及び吸込空間１１０の後側（すなわち、清掃本体部１０２側）に設けられた後部１２５とを含んでいる。側部１２３，１２４及び後部１２５は、中空構造を有している。側部１２３，１２４及び後部１２５の内部空間は、駆動機構１５０を本体部１２１内に収容するために利用される。 The main body 121 has a pair of side portions 123, 124 provided at positions separated from each other so as to sandwich the suction space 110 in the width direction, and the rear side of the side portions 123, 124 and the suction space 110 (that is, the cleaning main body portion). It includes a rear portion 125 provided on the 102 side). The side portions 123, 124 and the rear portion 125 have a hollow structure. The internal spaces of the side portions 123, 124 and the rear portion 125 are used to accommodate the drive mechanism 150 in the main body portion 121.
　後部１２５は、上壁部１９１と、後壁部１９２と、前壁部２４０（図４を参照）と、ホース１０３と吸込具１００との接続に用いられる接続凹部１９３とを有している。 The rear portion 125 has an upper wall portion 191 and a rear wall portion 192, a front wall portion 240 (see FIG. 4), and a connection recess 193 used for connecting the hose 103 and the suction tool 100.
　上壁部１９１は、後部１２５の内部空間を上側から塞ぐように略水平な姿勢で設けられている。上壁部１９１は、上下方向に所定の厚さを有し、前縁面１９８（図２を参照）を形成している。 The upper wall portion 191 is provided in a substantially horizontal posture so as to block the internal space of the rear portion 125 from above. The upper wall portion 191 has a predetermined thickness in the vertical direction and forms a leading edge surface 198 (see FIG. 2).
　後壁部１９２は、後部１２５の内部空間を後側から塞ぐように構成されている。詳細には、後壁部１９２は、前縁面１９８とは反対側で立設した姿勢で上壁部１９１に接続され、上壁部１９１と角隅部を形成している。 The rear wall portion 192 is configured to close the internal space of the rear portion 125 from the rear side. Specifically, the rear wall portion 192 is connected to the upper wall portion 191 in an upright posture opposite to the front edge surface 198, and forms a corner portion with the upper wall portion 191.
　接続凹部１９３は、ハウジング１２０の幅方向における略中央位置において、後壁部１９２と上壁部１９１とによって形成された角隅部に対して前方及び下方に凹没するように形成されている。接続凹部１９３は、吸込具１００とホース１０３との接続に用いられる。 The connection recess 193 is formed so as to be recessed forward and downward with respect to the corner portion formed by the rear wall portion 192 and the upper wall portion 191 at a substantially central position in the width direction of the housing 120. The connection recess 193 is used to connect the suction tool 100 and the hose 103.
　接続凹部１９３は、吸込具１００の幅方向において互いに離間した一対の側壁部１９４，１９５と、これらの側壁部１９４，１９５の下端間に設けられた下壁部１９６とを含んでいる。下壁部１９６には、開口部１９７（図３を参照）が形成されている。開口部１９７から延設され吸込空間１１０に繋がる流路２４１（図４を参照）が、後部１２５内において形成されている（図示せず）。開口部１９７は、ホース１０３の内部空間に繋がる部分である。 The connection recess 193 includes a pair of side wall portions 194 and 195 separated from each other in the width direction of the suction tool 100, and a lower wall portion 196 provided between the lower ends of these side wall portions 194 and 195. An opening 197 (see FIG. 3) is formed in the lower wall portion 196. A flow path 241 (see FIG. 4) extending from the opening 197 and connecting to the suction space 110 is formed in the rear portion 125 (not shown). The opening 197 is a portion connected to the internal space of the hose 103.
　前壁部２４０（図４を参照）は、上壁部１９１の前縁面１９８よりも後側で、吸込空間１１０から後部１２５の内部空間を仕切るように立設されている。言い換えると、前壁部２４０は、吸込空間１１０の後端を形成している。前壁部２４０（吸込具１００の幅方向における略中央位置）上で、上述の流路２４１が開口している。 The front wall portion 240 (see FIG. 4) is erected on the rear side of the front edge surface 198 of the upper wall portion 191 so as to partition the internal space of the suction space 110 from the rear portion 125. In other words, the front wall portion 240 forms the rear end of the suction space 110. The above-mentioned flow path 241 is open on the front wall portion 240 (a substantially central position in the width direction of the suction tool 100).
　側部１２３は、後部１２５の左端部分から前方に突出するように設けられている。側部１２３は、吸込空間１１０に対して左側に位置している部分である。側部１２３は、側部１２３の内部空間を上側から塞ぐように構成された湾曲壁部１８１と、側部１２３の内部空間を前側から塞ぐように構成された前壁部１８２と、側部１２３の内部空間を吸込空間１１０側から塞ぐように構成された内側壁部１７２とを有している。 The side portion 123 is provided so as to project forward from the left end portion of the rear portion 125. The side portion 123 is a portion located on the left side with respect to the suction space 110. The side portion 123 includes a curved wall portion 181 configured to close the internal space of the side portion 123 from above, a front wall portion 182 configured to close the internal space of the side portion 123 from the front side, and a side portion 123. It has an inner side wall portion 172 configured to close the internal space of the above from the suction space 110 side.
　湾曲壁部１８１は、前縁面１９８の左端部分において前縁面１９８の下縁と一体化され、前縁面１９８との接続部分から前方且つ下方に湾曲しながら延設されている。湾曲壁部１８１は、カバー部材１２２が載置される部分である。 The curved wall portion 181 is integrated with the lower edge of the leading edge surface 198 at the left end portion of the leading edge surface 198, and extends forward and downward from the connecting portion with the leading edge surface 198. The curved wall portion 181 is a portion on which the cover member 122 is placed.
　前壁部１８２は、湾曲壁部１８１の下側において立設した姿勢で設けられている。前壁部１８２は、前後方向に所定の厚さを有しており、湾曲壁部１８１の下端から前方に突出した上端面１８３を有している。前壁部１８２の上端面１８３は、カバー部材１２２の下端を支持するために用いられている。前壁部１８２の上端面１８３には、上方に開口した係合穴部１８４が形成されている。係合穴部１８４は、本体部１２１にカバー部材１２２の下部を固定するために利用される。 The front wall portion 182 is provided in an upright posture under the curved wall portion 181. The front wall portion 182 has a predetermined thickness in the front-rear direction, and has an upper end surface 183 protruding forward from the lower end of the curved wall portion 181. The upper end surface 183 of the front wall portion 182 is used to support the lower end of the cover member 122. An engaging hole portion 184 opened upward is formed on the upper end surface 183 of the front wall portion 182. The engaging hole portion 184 is used to fix the lower portion of the cover member 122 to the main body portion 121.
　内側壁部１７２は、吸込空間１１０の左端を区画するように、吸込空間１１０の左側で立設した姿勢で設けられている。内側壁部１７２は、吸込具１００の幅方向において所定の厚さを有している。内側壁部の外周面１８５の上部は、湾曲壁部１８１に対して右側に隣接し、前壁部１８２と同様の湾曲形状を有している。外周面１８５の下部は、前壁部１８２に対して右側に隣接し、前壁部１８２と同様に立設した姿勢をとっている。 The inner side wall portion 172 is provided in an upright posture on the left side of the suction space 110 so as to partition the left end of the suction space 110. The inner side wall portion 172 has a predetermined thickness in the width direction of the suction tool 100. The upper portion of the outer peripheral surface 185 of the inner side wall portion is adjacent to the right side with respect to the curved wall portion 181 and has a curved shape similar to that of the front wall portion 182. The lower part of the outer peripheral surface 185 is adjacent to the right side with respect to the front wall portion 182, and takes an upright posture in the same manner as the front wall portion 182.
　内側壁部１７２には、貫通孔及び凹部が設けられている。内側壁部１７２の貫通孔には、掻取ローラ１３１の回転シャフト３２０が挿通されている。内側壁部１７２の凹部には、回転シャフト３２０用の軸受３８０が吸込空間１１０側からはめ込まれている。内側壁部１７２の貫通孔及び凹部は、回転シャフト３２０の先端（吸込空間１１０側の端部）が回転シャフト３２０の基端よりも前方且つ下方に位置する傾斜姿勢を回転シャフト３２０がとるように形成されている。 The inner side wall portion 172 is provided with a through hole and a recess. The rotating shaft 320 of the scraping roller 131 is inserted through the through hole of the inner side wall portion 172. A bearing 380 for the rotary shaft 320 is fitted in the recess of the inner side wall portion 172 from the suction space 110 side. The through hole and the recess of the inner side wall portion 172 are arranged so that the rotary shaft 320 takes an inclined posture in which the tip of the rotary shaft 320 (the end on the suction space 110 side) is located in front of and below the base end of the rotary shaft 320. It is formed.
　右側の側部１２４は、左側の側部１２３に対して左右対称的な構造を有している。側部１２３の説明は、これらの側部１２３，１２４の対称性を考慮して、側部１２４に援用される。 The right side portion 124 has a symmetrical structure with respect to the left side portion 123. The description of the side portion 123 is incorporated into the side portion 124 in consideration of the symmetry of these side portions 123, 124.
　上爪１４１～１４４及び載置板１４５（図２を参照）は、上壁部１９１の前縁面１９８から前方に突出している。 The upper claws 141 to 144 and the mounting plate 145 (see FIG. 2) project forward from the leading edge surface 198 of the upper wall portion 191.
　載置板１４５は、吸込空間１１０の上側で、前縁面１９８から突出している略三角形状の板部分である。載置板１４５は、吸込具１００の幅方向において吸込空間１１０と略等しい長さを有している。載置板１４５は、内側壁部１７２の外周面１８５の上端部分と略等しい高さ位置に設けられている。載置板１４５の左端は、左側の内側壁部１７２に対して右側に離間した位置にあり、載置板１４５の左端と左側の内側壁部１７２との間に空隙が形成されている。載置板１４５の右端は、右側の内側壁部１７２に対して左側に離間した位置にあり、載置板１４５の右端と右側の内側壁部１７２との間に空隙が形成されている。 The mounting plate 145 is a substantially triangular plate portion that protrudes from the leading edge surface 198 on the upper side of the suction space 110. The mounting plate 145 has a length substantially equal to the suction space 110 in the width direction of the suction tool 100. The mounting plate 145 is provided at a height position substantially equal to the upper end portion of the outer peripheral surface 185 of the inner side wall portion 172. The left end of the mounting plate 145 is located at a position separated from the left inner side wall portion 172 on the right side, and a gap is formed between the left end of the mounting plate 145 and the left inner side wall portion 172. The right end of the mounting plate 145 is located on the left side with respect to the inner side wall portion 172 on the right side, and a gap is formed between the right end of the mounting plate 145 and the inner side wall portion 172 on the right side.
　上爪１４１は、載置板１４５の左端と内側壁部１７２の外周面１８５の上端との間の空隙の上側で、前縁面１９８から前方に突出している。上爪１４１は、内側壁部１７２の外周面１８５の上端及び載置板１４５の上面よりも高い位置にあり、上爪１４１と内側壁部１７２の外周面１８５の上端及び載置板１４５の上面との間には、挿入空間２９１が形成されている。挿入空間２９１は、本体部１２１にカバー部材１２２を取り付けるために利用される。 The upper claw 141 protrudes forward from the leading edge surface 198 on the upper side of the gap between the left end of the mounting plate 145 and the upper end of the outer peripheral surface 185 of the inner side wall portion 172. The upper claw 141 is located at a position higher than the upper end of the outer peripheral surface 185 of the inner side wall portion 172 and the upper surface of the mounting plate 145, and the upper end of the outer peripheral surface 185 of the upper claw 141 and the inner side wall portion 172 and the upper surface of the mounting plate 145. An insertion space 291 is formed between the two. The insertion space 291 is used to attach the cover member 122 to the main body 121.
　上爪１４３は、上爪１４１から左側に離間した位置で前縁面１９８から前方に突出している。前縁面１９８からの上爪１４３の突出量は、前縁面１９８からの上爪１４１の突出量よりも小さくなっている。 The upper claw 143 protrudes forward from the leading edge surface 198 at a position separated from the upper claw 141 on the left side. The amount of protrusion of the upper claw 143 from the leading edge surface 198 is smaller than the amount of protrusion of the upper claw 141 from the leading edge surface 198.
　上爪１４２，１４４は、上爪１４１，１４３に対してそれぞれ左右対称的なレイアウトの下で前縁面１９８から突出している。上爪１４１，１４３の説明は、対称性を考慮して、上爪１４２，１４４に援用される。 The upper claws 142 and 144 project from the leading edge surface 198 under a layout symmetrical to the upper claws 141 and 143, respectively. The description of the upper claws 141 and 143 is incorporated into the upper claws 142 and 144 in consideration of symmetry.
　カバー部材１２２は、吸込空間１１０を上側から塞ぐように構成されている。カバー部材１２２は、主板部２１１と、一対の固定フラップ部２１２，２１３とを有している。 The cover member 122 is configured to close the suction space 110 from above. The cover member 122 has a main plate portion 211 and a pair of fixed flap portions 212, 213.
　主板部２１１は、カバー部材１２２が本体部１２１に取り付けられたときに載置板１４５に載せられる部分である。主板部２１１は、吸込空間１１０の前側及び上側を塞ぐように構成され、吸込具１００の幅方向において吸込空間１１０と略等しい長さを有している。主板部２１１は、側部１２３の上部と略等しい曲率で前方且つ下方に湾曲した上板部２２１と、上板部２２１の下端縁から下方に突出し、吸込空間１１０の前側を塞ぐ下板部２２２とを含んでいる。上板部２２１は、カバー部材１２２が本体部１２１に取り付けられたときに左右の上爪１４１，１４２を上側から覆う。 The main plate portion 211 is a portion to be mounted on the mounting plate 145 when the cover member 122 is attached to the main body portion 121. The main plate portion 211 is configured to close the front side and the upper side of the suction space 110, and has a length substantially equal to that of the suction space 110 in the width direction of the suction tool 100. The main plate portion 211 has an upper plate portion 221 that is curved forward and downward with a curvature substantially equal to the upper portion of the side portion 123, and a lower plate portion 222 that projects downward from the lower end edge of the upper plate portion 221 and closes the front side of the suction space 110. And include. The upper plate portion 221 covers the left and right upper claws 141 and 142 from above when the cover member 122 is attached to the main body portion 121.
　固定フラップ部２１２は、上板部２２１の左縁から左方に突出している。固定フラップ部２１２は、カバー部材１２２が本体部１２１に取り付けられたときに左側の側部１２３上に載置されるように構成されている。すなわち、固定フラップ部２１２は、内側壁部１７２の外周面１８５及び前壁部１７１の湾曲壁部１８１の湾曲形状に沿うような湾曲形状を有している。 The fixed flap portion 212 protrudes to the left from the left edge of the upper plate portion 221. The fixed flap portion 212 is configured to be placed on the left side portion 123 when the cover member 122 is attached to the main body portion 121. That is, the fixed flap portion 212 has a curved shape that follows the curved shape of the outer peripheral surface 185 of the inner side wall portion 172 and the curved wall portion 181 of the front wall portion 171.
　固定フラップ部２１２の上端には、吸込具１００の幅方向に延びる溝部２２３が形成されている。溝部２２３は、上爪１４３が溝部２２３内においてスライド片２１６の下部と係合することを許容するように形成されている。すなわち、溝部２２３は、上爪１４３が溝部２２３において前方に突出できるように形成されている。また、溝部２２３は、溝部２２３の右端において上爪１４１の下側の挿入空間２９１に繋がるような深さを有している。 A groove 223 extending in the width direction of the suction tool 100 is formed at the upper end of the fixed flap portion 212. The groove portion 223 is formed so as to allow the upper claw 143 to engage with the lower portion of the slide piece 216 in the groove portion 223. That is, the groove portion 223 is formed so that the upper claw 143 can protrude forward in the groove portion 223. Further, the groove portion 223 has a depth at the right end of the groove portion 223 so as to be connected to the insertion space 291 on the lower side of the upper claw 141.
　固定フラップ部２１３は、主板部２１１に対して固定フラップ部２１２と左右対称的な構造を有している。固定フラップ部２１２の説明は、対称性を考慮して、固定フラップ部２１３に援用される。 The fixed flap portion 213 has a structure symmetrical to the fixed flap portion 212 with respect to the main plate portion 211. The description of the fixed flap portion 212 is incorporated into the fixed flap portion 213 in consideration of symmetry.
　接続部２９２は、カバー部材１２２に設けられている。詳細には、接続部２９２は、固定フラップ部２１２，２１３の溝部２２３にそれぞれ配置されたスライド片２１６，２１７と、固定フラップ部２１２，２１３の下縁から下方にそれぞれ突出した下爪部２１４，２１５とを含んでいる。 The connection portion 292 is provided on the cover member 122. Specifically, the connecting portion 292 includes slide pieces 216 and 217 arranged in the groove portions 223 of the fixed flap portions 212 and 213, respectively, and the lower claw portion 214 protruding downward from the lower edges of the fixed flap portions 212 and 213, respectively. 215 and is included.
　スライド片２１６は、溝部２２３に沿って吸込具１００の幅方向に移動可能に構成されている。図２において、スライド片２１６は、固定フラップ部２１２の左端縁から左側にはみ出した位置にあり、図２に示されている位置から右方に移動可能である。スライド片２１６の概略的な平面図が図５に示されている。スライド片２１６の概略的な背面図が図６に示されている。スライド片２１６の概略的な底面図が図７に示されている。図２、図５乃至図７を参照して、カバー部材１２２が更に説明される。 The slide piece 216 is configured to be movable in the width direction of the suction tool 100 along the groove portion 223. In FIG. 2, the slide piece 216 is located at a position protruding to the left from the left end edge of the fixed flap portion 212, and can be moved to the right from the position shown in FIG. A schematic plan view of the slide piece 216 is shown in FIG. A schematic rear view of the slide piece 216 is shown in FIG. A schematic bottom view of the slide piece 216 is shown in FIG. The cover member 122 will be further described with reference to FIGS. 2, 5 to 7.
　スライド片２１６は、ユーザによって操作される略矩形板状の操作片２３１と、操作片２３１の右端から右方に突出した突出片２３２と、操作片２３１の下面に設けられた係合部２３３とを含んでいる。 The slide piece 216 includes a substantially rectangular plate-shaped operation piece 231 operated by the user, a protruding piece 232 protruding to the right from the right end of the operation piece 231 and an engaging portion 233 provided on the lower surface of the operation piece 231. Includes.
　突出片２３２は、ユーザが操作片２３１を操作しスライド片２１６を右方に移動させたときに、溝部２２３の右端に形成された開口を通じて上爪１４１の下側の挿入空間２９１に入り込むように構成されている（図５において、上爪１４１は、点線で示されている）。このとき、上爪１４１は、カバー部材１２２の主板部２１１と突出片２３２との間に位置している。図５に示されるように、スライド片２１６が右方に移動されたときにおいて、上爪１４１は、突出片２３２を越えて前方に突出した状態になる。 The protruding piece 232 is inserted into the insertion space 291 below the upper claw 141 through the opening formed at the right end of the groove 223 when the user operates the operation piece 231 to move the slide piece 216 to the right. It is configured (in FIG. 5, the upper claw 141 is shown by a dotted line). At this time, the upper claw 141 is located between the main plate portion 211 of the cover member 122 and the projecting piece 232. As shown in FIG. 5, when the slide piece 216 is moved to the right, the upper claw 141 is in a state of protruding forward beyond the protruding piece 232.
　係合部２３３は、ユーザが操作片２３１を操作しスライド片２１６を右方に移動させたときに上爪１４３とかみ合う位置に形成されている。詳細には、係合部２３３は、操作片２３１の下面から下方に離間した位置に設けられた下板部２３５と、下板部２３５と上爪１４３とを繋ぐ接続板部２３６とを有している。ユーザが操作片２３１を操作しスライド片２１６を右方に移動させたときに、下板部２３５と操作片２３１の下面との間に形成された空間に上爪１４３が入り込む。 The engaging portion 233 is formed at a position where it engages with the upper claw 143 when the user operates the operation piece 231 to move the slide piece 216 to the right. Specifically, the engaging portion 233 has a lower plate portion 235 provided at a position downwardly separated from the lower surface of the operation piece 231 and a connecting plate portion 236 connecting the lower plate portion 235 and the upper claw 143. ing. When the user operates the operation piece 231 to move the slide piece 216 to the right, the upper claw 143 enters the space formed between the lower plate portion 235 and the lower surface of the operation piece 231.
　下爪部２１４は、固定フラップ部２１２の下縁から下方に突出している。下爪部２１４は、カバー部材１２２が本体部１２１に取り付けられたときに左側の側部１２３の係合穴部１８４にはめ込まれる。 The lower claw portion 214 protrudes downward from the lower edge of the fixed flap portion 212. The lower claw portion 214 is fitted into the engaging hole portion 184 of the left side portion 123 when the cover member 122 is attached to the main body portion 121.
　下爪部２１５及びスライド片２１７は、下爪部２１４及びスライド片２１６と左右対称的な構造を有している。下爪部２１４及びスライド片２１６の説明は、対称性を考慮して、下爪部２１５及びスライド片２１７に援用される。 The lower claw portion 215 and the slide piece 217 have a symmetrical structure with the lower claw portion 214 and the slide piece 216. The description of the lower claw portion 214 and the slide piece 216 is incorporated into the lower claw portion 215 and the slide piece 217 in consideration of symmetry.
　駆動機構１５０は、一対のモータ１５１，１５２と一対の駆動ベルト１５３，１５４とを有している（図３を参照）。モータ１５１，１５２及び駆動ベルト１５３，１５４は、本体部１２１の内部空間に配置されている。 The drive mechanism 150 has a pair of motors 151 and 152 and a pair of drive belts 153 and 154 (see FIG. 3). The motors 151, 152 and the drive belts 153, 154 are arranged in the internal space of the main body 121.
　モータ１５１は、本体部１５５と、本体部１５５から左方に突出したモータシャフト１５６とを有している。モータ１５１は、接続凹部１９３に対して左側で後部１２５の内部空間に配置されている。モータ１５１は、モータシャフト１５６が掻取ローラ１３１の回転シャフト３２０に略平行となるように固定されている。モータシャフト１５６には、プーリ１５７が取り付けられている。また、回転シャフト３２０の基端部分には、プーリ３４０が取り付けられている。 The motor 151 has a main body portion 155 and a motor shaft 156 protruding to the left from the main body portion 155. The motor 151 is arranged in the internal space of the rear portion 125 on the left side with respect to the connection recess 193. The motor 151 is fixed so that the motor shaft 156 is substantially parallel to the rotating shaft 320 of the scraping roller 131. A pulley 157 is attached to the motor shaft 156. Further, a pulley 340 is attached to the base end portion of the rotary shaft 320.
　駆動ベルト１５３は、後部１２５の内部空間から側部１２３の内部空間に延設され、プーリ１５７，３４０に掛け回されている。 The drive belt 153 extends from the internal space of the rear portion 125 to the internal space of the side portion 123, and is hung around the pulleys 157 and 340.
　モータ１５２及び駆動ベルト１５４は、接続凹部１９３に対して右側の内部空間に配置されている。右側のモータ１５２及び駆動ベルト１５４は、左側のモータ１５１及び駆動ベルト１５３に対して左右対称的な構造を有している。左側のモータ１５１及び駆動ベルト１５３の説明は、対称性を考慮して、右側のモータ１５２及び駆動ベルト１５４に援用される。 The motor 152 and the drive belt 154 are arranged in the internal space on the right side of the connection recess 193. The motor 152 and the drive belt 154 on the right side have a symmetrical structure with respect to the motor 151 and the drive belt 153 on the left side. The description of the motor 151 and the drive belt 153 on the left side is incorporated into the motor 152 and the drive belt 154 on the right side in consideration of symmetry.
　掻取ローラ１３１は、上述の回転シャフト３２０に加えて、回転シャフト３２０の先端部分に接続された中空のテーパ筒部３１１と、テーパ筒部３１１の外周面に設けられた複数のブラシ部３１２とを有している。 In addition to the rotary shaft 320 described above, the scraping roller 131 includes a hollow tapered tubular portion 311 connected to the tip portion of the rotary shaft 320, and a plurality of brush portions 312 provided on the outer peripheral surface of the tapered tubular portion 311. have.
　テーパ筒部３１１は、吸込空間１１０内で延設された筒状の部分である。詳細には、テーパ筒部３１１は、内側壁部１７２に対して右側に隣接した基端から幅方向における吸込空間１１０の中央位置に向けて延設されている。テーパ筒部３１１の先端は、吸込空間１１０の中央位置に対して左側に位置している。 The tapered cylindrical portion 311 is a tubular portion extended in the suction space 110. Specifically, the tapered tubular portion 311 extends from the proximal end adjacent to the right side of the inner side wall portion 172 toward the central position of the suction space 110 in the width direction. The tip of the tapered cylinder portion 311 is located on the left side with respect to the central position of the suction space 110.
　テーパ筒部３１１は、基端から先端に向けて徐々に細くなるテーパ形状を有している。テーパ筒部３１１の基端は、内側壁部１７２に向けて開口しており、回転シャフト３２０の先端部分は、基端の開口を通じてテーパ筒部３１１の内部に挿入されている。テーパ筒部３１１は、テーパ筒部３１１が回転シャフト３２０と同軸回転するように回転シャフト３２０と接続される内部構造（たとえば、スプライン結合）を有している。テーパ筒部３１１は、回転シャフト３２０と接続されることにより、回転シャフト３２０を介してハウジング１２０に保持される。 The tapered cylinder portion 311 has a tapered shape that gradually narrows from the base end to the tip end. The base end of the tapered cylinder portion 311 is open toward the inner side wall portion 172, and the tip portion of the rotary shaft 320 is inserted into the inside of the tapered cylinder portion 311 through the opening of the base end. The tapered cylinder portion 311 has an internal structure (for example, a spline coupling) in which the tapered cylinder portion 311 is connected to the rotating shaft 320 so as to rotate coaxially with the rotating shaft 320. The tapered cylinder portion 311 is held in the housing 120 via the rotary shaft 320 by being connected to the rotary shaft 320.
　テーパ筒部３１１は、回転シャフト３２０と同様の傾斜姿勢をとっている。すなわち、テーパ筒部３１１は、テーパ筒部３１１の先端の回転中心がテーパ筒部３１１の基端の回転中心に対して前方且つ下方に位置するような傾斜姿勢をとっている。 The tapered cylinder portion 311 has an inclined posture similar to that of the rotating shaft 320. That is, the tapered cylinder portion 311 is in an inclined posture so that the rotation center of the tip of the tapered cylinder portion 311 is located forward and downward with respect to the rotation center of the base end of the tapered cylinder portion 311.
　ブラシ部３１２は、掻取ローラ１３１が図２の矢印の方向に回転されたときに、床面に対して後方に擦れる線状の部材である。これらのブラシ部３１２は、床面と擦れたときに床面を傷つけない程度に軟質の部材から構成されている。 The brush portion 312 is a linear member that rubs backward against the floor surface when the scraping roller 131 is rotated in the direction of the arrow in FIG. These brush portions 312 are made of a member that is soft enough not to damage the floor surface when rubbed against the floor surface.
　ブラシ部３１２は、テーパ筒部３１１の外周面上でテーパ筒部３１１の基端から先端に向けて延設されており、テーパ筒部３１１の外周面から突出している。テーパ筒部３１１の外周面からのブラシ部３１２の突出量は、ブラシ部３１２の全長に亘って略一定である。ブラシ部３１２は、螺旋状に捩じれた姿勢でテーパ筒部３１１の外周面に固定されている。ブラシ部３１２は、テーパ筒部３１１の外周面とともに掻取ローラ１３１の外周部を構成している。 The brush portion 312 extends from the base end of the tapered cylinder portion 311 toward the tip on the outer peripheral surface of the tapered cylinder portion 311 and protrudes from the outer peripheral surface of the tapered cylinder portion 311. The amount of protrusion of the brush portion 312 from the outer peripheral surface of the tapered cylinder portion 311 is substantially constant over the entire length of the brush portion 312. The brush portion 312 is fixed to the outer peripheral surface of the tapered cylinder portion 311 in a spirally twisted posture. The brush portion 312 constitutes the outer peripheral portion of the scraping roller 131 together with the outer peripheral surface of the tapered cylinder portion 311.
　掻取ローラ１３２は、掻取ローラ１３１と左右対称的な構造を有している。掻取ローラ１３１の説明は、対称性を考慮して、掻取ローラ１３２に援用される。 The scraping roller 132 has a symmetrical structure with the scraping roller 131. The description of the scraping roller 131 is incorporated into the scraping roller 132 in consideration of symmetry.
　掻取ローラ１３１の先端は、幅方向における吸込空間１１０の中央位置に対して左側に位置しているのに対して、掻取ローラ１３２の先端は、幅方向における吸込空間１１０の中央位置に対して右側に位置している。したがって、掻取ローラ１３１，１３２の先端間には空隙が形成されている。この空隙の後側で、ハウジング１２０の後部１２５に形成された流路２４１が開口している（図４を参照）。 The tip of the scraping roller 131 is located on the left side with respect to the center position of the suction space 110 in the width direction, whereas the tip of the scraping roller 132 is located with respect to the center position of the suction space 110 in the width direction. Is located on the right side. Therefore, a gap is formed between the tips of the scraping rollers 131 and 132. Behind this void, a flow path 241 formed in the rear 125 of the housing 120 is open (see FIG. 4).
　掻取ローラ１３１，１３２の外周部に付着した塵埃を、これらの掻取ローラ１３１，１３２の先端間の空隙に向けて送り出す送出部２５０（図８を参照）が、カバー部材１２２の内面（吸込空間１１０に臨む面）に設けられている。図８は、カバー部材１２２の概略的な底面図である。図９は、送出部２５０と掻取ローラ１３２との間の概略的な位置関係を表す概略的な平面図である。図１０は、図９に示されるＸ－Ｘ線に沿うカバー部材１２２の概略的な断面図である。図８乃至図１０を参照して、送出部２５０が説明される。 The delivery unit 250 (see FIG. 8) that sends out the dust adhering to the outer peripheral portions of the scraping rollers 131 and 132 toward the gap between the tips of the scraping rollers 131 and 132 is the inner surface (suction) of the cover member 122. It is provided on the surface facing the space 110). FIG. 8 is a schematic bottom view of the cover member 122. FIG. 9 is a schematic plan view showing a schematic positional relationship between the delivery unit 250 and the scraping roller 132. FIG. 10 is a schematic cross-sectional view of the cover member 122 along the XX line shown in FIG. The delivery unit 250 will be described with reference to FIGS. 8 to 10.
　送出部２５０は、吸込具１００の幅方向において互いに間隔を空けてカバー部材１２２の内面から突出した複数の突条部２５１～２５５を有している。突条部２５１は、掻取ローラ１３１，１３２の先端間の空隙に対応する位置においてカバー部材１２２の内面から突出している。突条部２５２は、突条部２５１から左方に間隔を空けた位置でカバー部材１２２の内面から突出している。突条部２５３は、突条部２５２から左方に間隔を空けた位置でカバー部材１２２の内面から突出している。突条部２５４，２５５は、突条部２５１に対して突条部２５２，２５３と左右対称の位置でカバー部材１２２の内面から突出している。 The delivery unit 250 has a plurality of protrusions 251 to 255 protruding from the inner surface of the cover member 122 at intervals in the width direction of the suction tool 100. The ridge portion 251 protrudes from the inner surface of the cover member 122 at a position corresponding to the gap between the tips of the scraping rollers 131 and 132. The ridge portion 252 projects from the inner surface of the cover member 122 at a position spaced to the left from the ridge portion 251. The ridge portion 253 projects from the inner surface of the cover member 122 at a position spaced to the left from the ridge portion 252. The ridges 254 and 255 project from the inner surface of the cover member 122 at positions symmetrical to the ridges 252 and 253 with respect to the ridges 251.
　突条部２５１は、平面視において略Ｙ字形状を有している。詳細には、突条部２５１は、一対の傾斜部２６１，２６２と、これらの傾斜部２６１，２６２から連続的に延設された中央部２６３とを含んでいる。中央部２６３は、掻取ローラ１３１，１３２の先端間の空隙に対応する位置（すなわち、幅方向におけるカバー部材１２２の略中央位置）に配置されている。 The ridge portion 251 has a substantially Y-shape in a plan view. In particular, the ridges 251 include a pair of tilted portions 261,262 and a central portion 263 that extends continuously from these tilted portions 261,262. The central portion 263 is arranged at a position corresponding to the gap between the tips of the scraping rollers 131 and 132 (that is, a substantially central position of the cover member 122 in the width direction).
　傾斜部２６１は、平面視においてテーパ筒部３１１の外周面が前方に移動するように掻取ローラ１３１が回転したときに、掻取ローラ１３１の外周部に付着した塵埃を中央部２６３に送り出すような傾斜姿勢で延設されている。詳細には、傾斜部２６１は、掻取ローラ１３１の外周部の上側にある基端（後端）から前方に傾斜しながら中央部２６３に向けて延設されている。傾斜部２６１は、掻取ローラ１３１の外周部に上下方向に重なっている接触部２６４と、掻取ローラ１３１の外周部に上下方向に重ならない位置において接触部２６４から斜め前方に延出された延出部２６５とを含んでいる。 The inclined portion 261 sends out dust adhering to the outer peripheral portion of the scraping roller 131 to the central portion 263 when the scraping roller 131 rotates so that the outer peripheral surface of the tapered cylinder portion 311 moves forward in a plan view. It is extended in a slanted posture. Specifically, the inclined portion 261 extends toward the central portion 263 while inclining forward from the base end (rear end) on the upper side of the outer peripheral portion of the scraping roller 131. The inclined portion 261 extends diagonally forward from the contact portion 264 that vertically overlaps the outer peripheral portion of the scraping roller 131 and the contact portion 264 at a position that does not vertically overlap the outer peripheral portion of the scraping roller 131. It includes an extension portion 265.
　接触部２６４の下縁は、接触部２６４がブラシ部３１２に略一定の量だけ食い込むように湾曲した形状を有している（図１０を参照）。ブラシ部３１２に対する接触部２６４の食込量は、掻取ローラ１３１の外周部に付着した塵埃を捕捉するのに十分であって、掻取ローラ１３１に対して過度に大きな抵抗を生じさせない大きさに設定されている。接触部２６４は、ブラシ部３１２に接触しながらブラシ部３１２に付着した塵埃を掻取ローラ１３１の先端側に移動させるために設けられている。 The lower edge of the contact portion 264 has a curved shape so that the contact portion 264 bites into the brush portion 312 by a substantially constant amount (see FIG. 10). The amount of bite of the contact portion 264 with respect to the brush portion 312 is sufficient to capture the dust adhering to the outer peripheral portion of the scraping roller 131, and is large enough not to generate excessively large resistance to the scraping roller 131. Is set to. The contact portion 264 is provided to move the dust adhering to the brush portion 312 to the tip end side of the scraping roller 131 while contacting the brush portion 312.
　接触部２６４がブラシ部３１２に接触するのに対して、延出部２６５は、掻取ローラ１３１，１３２の先端間の空隙に対応する位置にあり、これらの掻取ローラ１３１，１３２の外周部には接触していない。延出部２６５の前端は、中央部２６３と接続されている。カバー部材１２２の内面からの延出部２６５の突出量は、中央部２６３との接続部分（すなわち、延出部２６５の前端）に向けて徐々に大きくなっている。 The contact portion 264 is in contact with the brush portion 312, whereas the extension portion 265 is located at a position corresponding to the gap between the tips of the scraping rollers 131 and 132, and the outer peripheral portions of these scraping rollers 131 and 132 are located. Not in contact with. The front end of the extension portion 265 is connected to the central portion 263. The amount of protrusion of the extending portion 265 from the inner surface of the cover member 122 gradually increases toward the connecting portion with the central portion 263 (that is, the front end of the extending portion 265).
　中央部２６３は、傾斜部２６１に対して屈曲し前方に延出されている。中央部２６３は、カバー部材１２２の内面から掻取ローラ１３１，１３２の中心軸に向けて突出し、掻取ローラ１３１，１３２の先端間の空隙に入り込んでいる。カバー部材１２２の内面からの中央部２６３の突出量は、カバー部材１２２の内面からの接触部２６４の突出量よりも大きくなっている。中央部２６３及び延出部２６５は、塵埃を掻取ローラ１３１，１３２の先端間の空隙に押し出す押出部２６６を構成している。 The central portion 263 is bent with respect to the inclined portion 261 and extends forward. The central portion 263 protrudes from the inner surface of the cover member 122 toward the central axis of the scraping rollers 131 and 132, and enters the gap between the tips of the scraping rollers 131 and 132. The amount of protrusion of the central portion 263 from the inner surface of the cover member 122 is larger than the amount of protrusion of the contact portion 264 from the inner surface of the cover member 122. The central portion 263 and the extension portion 265 constitute an extrusion portion 266 that pushes dust into a gap between the tips of the scraping rollers 131 and 132.
　傾斜部２６２は、掻取ローラ１３２の外周部に付着した塵埃を掻取ローラ１３１，１３２の先端間の空隙に送り出すように、中央部２６３に対して傾斜部２６１と左右対称に設けられている。傾斜部２６１の説明は、対称性を考慮して傾斜部２６２に援用される。 The inclined portion 262 is provided symmetrically with respect to the inclined portion 261 with respect to the central portion 263 so as to send dust adhering to the outer peripheral portion of the scraping roller 132 to the gap between the tips of the scraping rollers 131 and 132. .. The description of the inclined portion 261 is incorporated into the inclined portion 262 in consideration of symmetry.
　突条部２５２は、接触部２６４と略平行な姿勢で延設されている。突条部２５２は、突条部２５２の先端（前端）から所定の区間に亘って、掻取ローラ１３１の回転方向（図９に示されている矢印の方向）において接触部２６４の上流側に位置している。掻取ローラ１３１の回転方向において接触部２６４と重なる突条部２５２の部分は、以下の説明において「重畳部２７１」と称される。重畳部２７１は、接触部２６４に塵埃を受け渡すために設けられている。 The ridge portion 252 is extended in a posture substantially parallel to the contact portion 264. The ridge portion 252 is located upstream of the contact portion 264 in the rotation direction of the scraping roller 131 (direction of the arrow shown in FIG. 9) from the tip end (front end) of the ridge portion 252 to a predetermined section. positioned. The portion of the ridge portion 252 that overlaps with the contact portion 264 in the rotational direction of the scraping roller 131 is referred to as "superimposing portion 271" in the following description. The superimposing portion 271 is provided for passing dust to the contact portion 264.
　残りの部分は、掻取ローラ１３１の軸方向において、接触部２６４の基端（後端）よりも掻取ローラ１３１の基端側に位置し、掻取ローラ１３１の回転方向において接触部２６４と重なっていない。この部分は、以下の説明において「捕捉部２７２」と称される。捕捉部２７２は、接触部２６４の基端よりも掻取ローラ１３１の基端側で付着した塵埃を捕捉するために設けられている。 The remaining portion is located on the proximal end side of the scraping roller 131 with respect to the proximal end (rear end) of the contact portion 264 in the axial direction of the scraping roller 131, and with the contact portion 264 in the rotational direction of the scraping roller 131. It does not overlap. This portion is referred to as "capture unit 272" in the following description. The catching portion 272 is provided to catch dust adhering to the base end side of the scraping roller 131 rather than the base end of the contact portion 264.
　突条部２５２の下縁は、突条部２５２がブラシ部３１２に対して略一定の量だけ食い込むように湾曲した形状を有している。カバー部材１２２の内面からの突条部２５２の突出量は、ブラシ部３１２に対する接触部２６４の食込量に略等しい食込量が得られるように、突条部２５２及び接触部２６４の接触部分における掻取ローラ１３１の太さの相違を考慮して設定されている。詳細には、掻取ローラ１３１は、突条部２５２との接触部分において接触部２６４との接触部分よりも太くなっている。したがって、突条部２５２の突出量は、接触部２６４の食込量と略等しい食込量を得るために、接触部２６４の突出量よりも小さくなっている。 The lower edge of the ridge portion 252 has a curved shape so that the ridge portion 252 bites into the brush portion 312 by a substantially constant amount. The amount of protrusion of the ridge portion 252 from the inner surface of the cover member 122 is the contact portion of the ridge portion 252 and the contact portion 264 so that a bite amount substantially equal to the bite amount of the contact portion 264 with respect to the brush portion 312 can be obtained. It is set in consideration of the difference in the thickness of the scraping roller 131 in the above. Specifically, the scraping roller 131 is thicker in the contact portion with the ridge portion 252 than in the contact portion with the contact portion 264. Therefore, the protruding amount of the ridge portion 252 is smaller than the protruding amount of the contact portion 264 in order to obtain a bite amount substantially equal to the bite amount of the contact portion 264.
　突条部２５３は、突条部２５２と略平行な姿勢で延設されている。突条部２５３は、突条部２５３の先端（前端）から所定の区間に亘って、掻取ローラ１３１の回転方向において突条部２５２の上流側に位置している。掻取ローラ１３１の回転方向において突条部２５２と重なる突条部２５２の部分は、以下の説明において「重畳部２７３」と称される。重畳部２７３は、突条部２５２に塵埃を受け渡すために設けられている。 The ridge portion 253 is extended in a posture substantially parallel to the ridge portion 252. The ridge portion 253 is located on the upstream side of the ridge portion 252 in the rotational direction of the scraping roller 131 from the tip end (front end) of the ridge portion 253 to a predetermined section. The portion of the ridge portion 252 that overlaps the ridge portion 252 in the rotational direction of the scraping roller 131 is referred to as "superimposing portion 273" in the following description. The superimposing portion 273 is provided for passing dust to the ridge portion 252.
　残りの部分は、掻取ローラ１３１の軸方向において、突条部２５２の基端（後端）よりも掻取ローラ１３１の基端側に位置し、掻取ローラ１３１の回転方向において突条部２５２と重なっていない。この部分は、以下の説明において「捕捉部２７４」と称される。捕捉部２７４は、突条部２５２の基端よりも掻取ローラ１３１の基端側で付着した塵埃を捕捉するために設けられている。 The remaining portion is located on the proximal end side of the scraping roller 131 with respect to the proximal end (rear end) of the ridge portion 252 in the axial direction of the scraping roller 131, and the ridge portion in the rotational direction of the scraping roller 131. It does not overlap with 252. This portion is referred to as "capture unit 274" in the following description. The catching portion 274 is provided to catch dust adhering to the base end side of the scraping roller 131 rather than the base end of the ridge portion 252.
　突条部２５３の下縁は、突条部２５２の下縁と同様に、突条部２５２がブラシ部３１２に対して略一定の量だけ食い込むように湾曲した形状を有している。また、突条部２５３がブラシ部３１２に対する突条部２５２の食込量に略等しい食込量でブラシ部３１２に食い込むように、カバー部材１２２の内面からの突条部２５３の突出量は、突条部２５２の突出量よりも小さくなっている。 Similar to the lower edge of the ridge portion 252, the lower edge of the ridge portion 253 has a curved shape so that the ridge portion 252 bites into the brush portion 312 by a substantially constant amount. Further, the protrusion amount of the ridge portion 253 from the inner surface of the cover member 122 is such that the ridge portion 253 bites into the brush portion 312 with a bite amount substantially equal to the bite amount of the ridge portion 252 with respect to the brush portion 312. It is smaller than the protrusion amount of the ridge portion 252.
　吸込具１００及び清掃機１０１の動作が以下に説明される。 The operation of the suction tool 100 and the cleaning machine 101 will be described below.
　操作部１０４が操作されると、清掃機１０１が作動し、吸引力がホース１０３及び吸込具１００の後部１２５に形成された流路２４１を通じて吸込空間１１０に作用する。この結果、床面上の塵埃が吸込空間１１０の下向きの開口を通じて、吸込空間１１０に流入する。その後、塵埃は、流路２４１及びホース１０３を通じて清掃機１０１内に集塵される。 When the operation unit 104 is operated, the cleaning machine 101 operates, and the suction force acts on the suction space 110 through the flow path 241 formed in the hose 103 and the rear portion 125 of the suction tool 100. As a result, dust on the floor surface flows into the suction space 110 through the downward opening of the suction space 110. After that, the dust is collected in the cleaning machine 101 through the flow path 241 and the hose 103.
　この間、吸込具１００に内蔵されたモータ１５１が作動し、モータ１５１の駆動力は、駆動ベルト１５３を通じて回転シャフト３２０に伝達される。回転シャフト３２０の先端部分は、テーパ筒部３１１の内部でテーパ筒部３１１に連結されているので、掻取ローラ１３１は、回転シャフト３２０とともに回転する。 During this time, the motor 151 built in the suction tool 100 operates, and the driving force of the motor 151 is transmitted to the rotating shaft 320 through the drive belt 153. Since the tip portion of the rotating shaft 320 is connected to the tapered cylinder portion 311 inside the tapered cylinder portion 311, the scraping roller 131 rotates together with the rotating shaft 320.
　このとき、テーパ筒部３１１の外周面から突出したブラシ部３１２は、床面に接触しながら床面上の塵埃を掻き取り後方に送り出す。掻取ローラ１３１の後方において流路２４１が形成されているので、掻取ローラ１３１の後側では、比較的強い吸引力が作用している。したがって、ブラシ部３１２によって後方に送り出された塵埃は、比較的強い吸引作用を受け、清掃機１０１内に吸い込まれる。 At this time, the brush portion 312 protruding from the outer peripheral surface of the tapered cylinder portion 311 scrapes the dust on the floor surface and sends it backward while contacting the floor surface. Since the flow path 241 is formed behind the scraping roller 131, a relatively strong suction force acts on the rear side of the scraping roller 131. Therefore, the dust sent backward by the brush portion 312 receives a relatively strong suction action and is sucked into the cleaning machine 101.
　掻取ローラ１３１が床面上の塵埃を掻き取っているとき、長い塵埃が掻取ローラ１３１に巻き付くことがある（図１１を参照）。掻取ローラ１３１は、先端に向けて細くなるテーパ形状を有しているので、長い塵埃の巻き付き力の分力は、掻取ローラ１３１の先端側に向きやすい。したがって、掻取ローラ１３１に巻き付いた長い塵埃を掻取ローラ１３１の先端に向けて移動させることができる。 When the scraping roller 131 is scraping dust on the floor surface, long dust may wind around the scraping roller 131 (see FIG. 11). Since the scraping roller 131 has a tapered shape that tapers toward the tip, the component force of the winding force of long dust tends to be directed toward the tip side of the scraping roller 131. Therefore, the long dust wrapped around the scraping roller 131 can be moved toward the tip of the scraping roller 131.
　掻取ローラ１３１は、先端に向けて細くなっているので、長い塵埃の巻き付き力は、掻取ローラ１３１の基端側よりも掻取ローラ１３１の先端側において小さくなりやすい。したがって、掻取ローラ１３１に巻き付いた塵埃を掻取ローラ１３１の先端側に移動させる分力は、塵埃が掻取ローラ１３１の先端に近づくにつれて小さくなりやすい。掻取ローラ１３１のテーパ形状による先端側への塵埃の移動効果は、掻取ローラ１３１の先端の近くにおいて小さくなるけれども、この移動効果は、送出部２５０によって補われる。送出部２５０による塵埃の移動効果が以下に説明される。 Since the scraping roller 131 becomes thinner toward the tip, the winding force of long dust tends to be smaller on the tip side of the scraping roller 131 than on the base end side of the scraping roller 131. Therefore, the component force for moving the dust wrapped around the scraping roller 131 toward the tip of the scraping roller 131 tends to decrease as the dust approaches the tip of the scraping roller 131. The effect of moving dust toward the tip side due to the tapered shape of the scraping roller 131 is small near the tip of the scraping roller 131, but this moving effect is compensated by the delivery unit 250. The effect of moving dust by the delivery unit 250 will be described below.
　図９に示される点Ｐ１の位置に塵埃が付着している場合、この塵埃は、掻取ローラ１３１が回転すると、送出部２５０の中で掻取ローラ１３１の最も基端側に位置する突条部２５３の基端（後端）側の部分（すなわち、捕捉部２７４）で捕捉される。この塵埃は、掻取ローラ１３１の回転に伴って、突条部２５３の傾斜に従って斜め前方に移動し、突条部２５３の先端（前端）（図９において、点Ｐ２の位置）に到達する。図９の点Ｐ２の位置は、掻取ローラ１３１の回転方向において突条部２５２の上流側である。 When dust adheres to the position of the point P1 shown in FIG. 9, when the scraping roller 131 rotates, the dust is a protrusion located on the most proximal side of the scraping roller 131 in the delivery portion 250. It is captured by the portion on the base end (rear end) side of the portion 253 (that is, the capture portion 274). As the scraping roller 131 rotates, the dust moves diagonally forward according to the inclination of the ridge portion 253 and reaches the tip end (front end) of the ridge portion 253 (the position of the point P2 in FIG. 9). The position of the point P2 in FIG. 9 is on the upstream side of the ridge portion 252 in the rotation direction of the scraping roller 131.
　突条部２５３の先端（前端）は、突条部２５３に対して掻取ローラ１３１の先端側に設けられた突条部２５２と掻取ローラ１３１の回転方向において重なる重畳部２７３である。したがって、塵埃が掻取ローラ１３１の外周部に付着した状態で掻取ローラ１３１が更に回転すると、塵埃は、掻取ローラ１３１の回転方向において突条部２５２に接触する位置（図９において、点Ｐ３の位置）に移動する。掻取ローラ１３１が更に回転すると、塵埃は、突条部２５２の傾斜に従って、突条部２５２の先端（前端）（図９において、点Ｐ４の位置）に到達する。図９の点Ｐ４の位置は、掻取ローラ１３１の回転方向において接触部２６４の上流側である。 The tip (front end) of the ridge portion 253 is an overlapping portion 273 that overlaps the ridge portion 252 provided on the tip side of the scraping roller 131 with respect to the ridge portion 253 in the rotation direction of the scraping roller 131. Therefore, when the scraping roller 131 further rotates with the dust adhering to the outer peripheral portion of the scraping roller 131, the dust comes into contact with the ridge portion 252 in the rotation direction of the scraping roller 131 (point in FIG. 9). Move to the position of P3). When the scraping roller 131 further rotates, the dust reaches the tip end (front end) of the ridge portion 252 (the position of the point P4 in FIG. 9) according to the inclination of the ridge portion 252. The position of the point P4 in FIG. 9 is on the upstream side of the contact portion 264 in the rotation direction of the scraping roller 131.
　突条部２５２の先端（前端）は、突条部２５２に対して掻取ローラ１３１の先端側に設けられた接触部２６４と掻取ローラ１３１の回転方向において重なる重畳部２７１である。したがって、塵埃が掻取ローラ１３１の外周部に付着した状態で掻取ローラ１３１が更に回転すると、塵埃は、掻取ローラ１３１の回転方向において接触部２６４に接触する位置（図９において、点Ｐ５の位置）に移動する。 The tip (front end) of the ridge portion 252 is an overlapping portion 271 that overlaps the contact portion 264 provided on the tip side of the scraping roller 131 with respect to the ridge portion 252 in the rotation direction of the scraping roller 131. Therefore, when the scraping roller 131 further rotates with the dust adhering to the outer peripheral portion of the scraping roller 131, the dust comes into contact with the contact portion 264 in the rotation direction of the scraping roller 131 (point P5 in FIG. 9). Move to (position).
　掻取ローラ１３１が更に回転すると、塵埃は、接触部２６４の傾斜に従って、掻取ローラ１３１，１３２の先端間の空隙に向けて移動する。押出部２６６（延出部２６５及び中央部２６３）は、送出部２５０の他の部分よりも大きな突出量で掻取ローラ１３１，１３２の間の空隙に入り込んでいる。したがって、塵埃は、押出部２６６によって掻取ローラ１３１，１３２の先端間の空隙内に押し出される。 When the scraping roller 131 further rotates, the dust moves toward the gap between the tips of the scraping rollers 131 and 132 according to the inclination of the contact portion 264. The extruded portion 266 (extended portion 265 and central portion 263) enters the gap between the scraping rollers 131 and 132 with a larger amount of protrusion than the other portions of the sending portion 250. Therefore, the dust is pushed out into the gap between the tips of the scraping rollers 131 and 132 by the extrusion portion 266.
　押出部２６６によって掻取ローラ１３１，１３２の先端間の空隙の後側には流路２４１が開口している。したがって、押出部２６６によって掻取ローラ１３１，１３２の先端間の空隙内に押し出された塵埃は、流路２４１からの吸引力を受け、流路２４１及びホース１０３を通じて清掃機１０１に集塵される。 The flow path 241 is opened on the rear side of the gap between the tips of the scraping rollers 131 and 132 by the extrusion portion 266. Therefore, the dust extruded into the gap between the tips of the scraping rollers 131 and 132 by the extrusion portion 266 receives the suction force from the flow path 241 and is collected by the cleaning machine 101 through the flow path 241 and the hose 103. ..
　掻取ローラ１３１の先端の近くでは、上述の如く、掻取ローラ１３１のテーパ形状による塵埃の移動能力は、掻取ローラ１３１の基端側よりも弱くなっている。この場合、塵埃が掻取ローラ１３１の先端の近くに溜まり、掻取ローラ１３１の近くで塵埃の塊が形成されることが想定される。たとえば、塵埃の塊の一部が掻取ローラ１３１の外周部に付着し、残りの部分が掻取ローラ１３１，１３２の間の空隙にはみ出した状態になることが考えられる。 Near the tip of the scraping roller 131, as described above, the ability to move dust due to the tapered shape of the scraping roller 131 is weaker than that of the base end side of the scraping roller 131. In this case, it is assumed that dust collects near the tip of the scraping roller 131 and a mass of dust is formed near the scraping roller 131. For example, it is conceivable that a part of the dust mass adheres to the outer peripheral portion of the scraping roller 131, and the remaining portion protrudes into the gap between the scraping rollers 131 and 132.
　塵埃の塊が、上述の如く掻取ローラ１３１に付着している場合、掻取ローラ１３１，１３２の間の空隙にはみ出した部分が、押出部２６６によって掻取ローラ１３１，１３２の間の空隙内に押し出される。このとき、掻取ローラ１３１の外周部に付着した塵埃の塊の部分は、掻取ローラ１３１の先端側に引っ張られる。したがって、掻取ローラ１３１の先端側への塵埃の移動が、送出部２５０によって補われる。 When a lump of dust adheres to the scraping roller 131 as described above, the portion protruding into the gap between the scraping rollers 131 and 132 is formed in the gap between the scraping rollers 131 and 132 by the extrusion portion 266. Is pushed out. At this time, the portion of the dust mass adhering to the outer peripheral portion of the scraping roller 131 is pulled toward the tip end side of the scraping roller 131. Therefore, the movement of dust to the tip end side of the scraping roller 131 is supplemented by the delivery unit 250.
　接触部２６４及び突条部２５２，２５３の突出量は、掻取ローラ１３１のテーパ形状に合わせて設定され、ブラシ部３１２に対する接触部２６４及び突条部２５２，２５３の食込量は、互いに略等しくなっている。この食込量は、掻取ローラ１３１の回転に対して過度に大きな抵抗を与えないように設定されているので、掻取ローラ１３１を駆動するモータ１５１に対して、過度に大きな負荷が加わらない。 The amount of protrusion of the contact portion 264 and the ridge portion 252,253 is set according to the tapered shape of the scraping roller 131, and the amount of bite of the contact portion 264 and the ridge portion 252,253 with respect to the brush portion 312 is substantially mutual. Are equal. Since this biting amount is set so as not to give an excessively large resistance to the rotation of the scraping roller 131, an excessively large load is not applied to the motor 151 for driving the scraping roller 131. ..
　送出部２５０の点検に関して、カバー部材１２２は、本体部１２１から取り外し可能に構成されているので、ユーザがカバー部材１２２を本体部１２１から取り外し上下反転することにより、送出部２５０を容易に点検することができる。このとき、吸込空間１１０は、上方に開口した状態になるので、ユーザは、吸込空間１１０の上側から掻取ローラ１３１，１３２にアクセスし、掻取ローラ１３１，１３２を点検及びメンテナンスすることができる。 Regarding the inspection of the delivery unit 250, since the cover member 122 is configured to be removable from the main body unit 121, the user can easily inspect the transmission unit 250 by removing the cover member 122 from the main body unit 121 and turning it upside down. be able to. At this time, since the suction space 110 is opened upward, the user can access the scraping rollers 131 and 132 from above the suction space 110 to inspect and maintain the scraping rollers 131 and 132. ..
　ユーザがカバー部材１２２の下爪部２１４，２１５を側部１２３，１２４の係合穴部１８４にそれぞれ挿入することにより、カバー部材１２２の下部は、本体部１２１に固定される。その後、ユーザがスライド片２１６，２１７を図２に示されている位置から幅方向におけるカバー部材１２２の中央位置に向けてスライドさせると、カバー部材１２２の上部も、本体部１２１に固定される。 The lower part of the cover member 122 is fixed to the main body portion 121 by the user inserting the lower claw portions 214 and 215 of the cover member 122 into the engaging hole portions 184 of the side portions 123 and 124, respectively. After that, when the user slides the slide pieces 216 and 217 from the position shown in FIG. 2 toward the center position of the cover member 122 in the width direction, the upper portion of the cover member 122 is also fixed to the main body portion 121.
　すなわち、スライド片２１６，２１７がカバー部材１２２の中央位置に向けてスライドされると、スライド片２１６，２１７の係合部２３３は、ハウジング１２０の上壁部１９１の前縁面１９８から前方に突出した上爪１４３，１４４と係合する。このとき、スライド片２１６の突出片２３２は、固定フラップ部２１２の溝部２２３の右端から突出し、上爪１４１の下側の挿入空間２９１に入り込む。同様に、スライド片２１７の突出片２３２は、固定フラップ部２１２の溝部２２３の左端から突出し、上爪１４２の下側の挿入空間２９１に入り込む。 That is, when the slide pieces 216 and 217 are slid toward the center position of the cover member 122, the engaging portion 233 of the slide pieces 216 and 217 protrudes forward from the leading edge surface 198 of the upper wall portion 191 of the housing 120. Engage with the upper claws 143 and 144. At this time, the protruding piece 232 of the slide piece 216 protrudes from the right end of the groove portion 223 of the fixed flap portion 212 and enters the insertion space 291 below the upper claw 141. Similarly, the protruding piece 232 of the slide piece 217 protrudes from the left end of the groove portion 223 of the fixed flap portion 212 and enters the insertion space 291 below the upper claw 142.
　上述の如く、ユーザがカバー部材１２２の下爪部２１４，２１５を側部１２３，１２４の係合穴部１８４にそれぞれ挿入すれば、カバー部材１２２は、本体部１２１に適切に固定される。しかしながら、下爪部２１４，２１５が側部１２３，１２４の係合穴部１８４の前側にずれた状態で、カバー部材１２２が吸込空間１１０を上側から塞ぐようにユーザがカバー部材１２２を本体部１２１上に設置してしまうことが考えられる。 As described above, if the user inserts the lower claw portions 214 and 215 of the cover member 122 into the engaging hole portions 184 of the side portions 123 and 124, respectively, the cover member 122 is appropriately fixed to the main body portion 121. However, in a state where the lower claw portions 214 and 215 are displaced toward the front side of the engaging hole portions 184 of the side portions 123 and 124, the user sets the cover member 122 to the main body portion 121 so that the cover member 122 closes the suction space 110 from above. It is possible that it will be installed on top.
　下爪部２１４，２１５が係合穴部１８４にそれぞれ挿入された状態であるときの左側の溝部２２３の右端周囲におけるカバー部材１２２の概略的な断面図が、図１２に示されている。下爪部２１４，２１５が側部１２３，１２４の係合穴部１８４の前側にずれた状態で、カバー部材１２２が本体部１２１上に設置されたときの左側の溝部２２３の右端周囲におけるカバー部材１２２の概略的な断面図が、図１３に示されている。図１２及び図１３において、スライド片２１６の突出片２３２は、図２に示される位置にある。 FIG. 12 shows a schematic cross-sectional view of the cover member 122 around the right end of the groove portion 223 on the left side when the lower claw portions 214 and 215 are inserted into the engagement hole portions 184, respectively. The cover member around the right end of the groove portion 223 on the left side when the cover member 122 is installed on the main body portion 121 with the lower claw portions 214 and 215 displaced toward the front side of the engagement hole portion 184 of the side portions 123 and 124. A schematic cross-sectional view of 122 is shown in FIG. In FIGS. 12 and 13, the protruding piece 232 of the slide piece 216 is in the position shown in FIG.
　下爪部２１４，２１５が係合穴部１８４にそれぞれ挿入された状態であるとき、突出片２３２全体は、上爪１４１の下側にあり、スライド片２１６の移動方向において挿入空間２９１に重なっている。すなわち、突出片２３２及び上爪１４１は、スライド片２１６の移動方向において重なっていない。 When the lower claw portions 214 and 215 are inserted into the engaging hole portions 184, the entire protruding piece 232 is below the upper claw portion 141 and overlaps the insertion space 291 in the moving direction of the slide piece 216. There is. That is, the protruding piece 232 and the upper claw 141 do not overlap in the moving direction of the slide piece 216.
　一方、下爪部２１４，２１５が側部１２３，１２４の係合穴部１８４の前側にずれた状態（下爪部２１４，２１５が係合穴部１８４にはめ込まれていない状態）であるとき、カバー部材１２２は、図１２に示される位置よりも前側にずれた位置で設置される。また、下爪部２１４，２１５が係合穴部１８４に下方に差し込まれていないので、カバー部材１２２は、図１２に示される位置よりも浮き上がった位置で設置される。カバー部材１２２の位置が、図１２に示されるカバー部材１２２の位置に対して前側且つ上側にずれるので、スライド片２１６の突出片２３２も、図１２に示される突出片２３２の位置に対して前側且つ上側にずれる。 On the other hand, when the lower claw portions 214 and 215 are displaced to the front side of the engaging hole portions 184 of the side portions 123 and 124 (the lower claw portions 214 and 215 are not fitted into the engaging hole portions 184). The cover member 122 is installed at a position shifted forward from the position shown in FIG. Further, since the lower claw portions 214 and 215 are not inserted downward into the engaging hole portion 184, the cover member 122 is installed at a position raised above the position shown in FIG. Since the position of the cover member 122 is displaced forward and upward with respect to the position of the cover member 122 shown in FIG. 12, the protruding piece 232 of the slide piece 216 is also front side with respect to the position of the protruding piece 232 shown in FIG. And it shifts to the upper side.
　前側且つ上側にずれた突出片２３２に対してスライド片２１６の移動方向に重なるように、上爪１４１が構成されている。すなわち、上爪１４１の先端は、図５に示されるように、突出片２３２に対して前側に位置している。したがって、突出片２３２が前方にずれた位置にあっても、図１３に示されるように、上爪１４１は、上側にずれた位置にある突出片２３２とスライド片２１６の移動方向において部分的に重なる。図１３に示されている状態で、ユーザがスライド片２１６を右方に移動させると、突出片２３２の先端は、上爪１４１の左側面に突き当たり、スライド片２１６の移動が阻止される。この結果、ユーザは、カバー部材１２２が本体部１２１に正しく設置されていないことに気づきやすくなる。 The upper claw 141 is configured so as to overlap the slide piece 216 in the moving direction with respect to the protruding piece 232 shifted to the front side and the upper side. That is, the tip of the upper claw 141 is located on the front side with respect to the protruding piece 232 as shown in FIG. Therefore, even if the protruding piece 232 is in a position shifted forward, as shown in FIG. 13, the upper claw 141 is partially provided in the moving direction of the protruding piece 232 and the slide piece 216 in the position shifted upward. Overlap. When the user moves the slide piece 216 to the right in the state shown in FIG. 13, the tip of the protruding piece 232 abuts on the left side surface of the upper claw 141, and the movement of the slide piece 216 is prevented. As a result, the user can easily notice that the cover member 122 is not properly installed in the main body portion 121.
　上述の実施形態に関して、掻取ローラ１３１，１３２の先端間の空隙に対応する位置に配置された突条部２５１は、掻取ローラ１３１，１３２の両方から塵埃を除去するように構成されている。代替的に、図１４に示されるように、掻取ローラ１３１，１３２の先端間の空隙に対応する位置に２つの突条部２５６，２５７が設けられてもよい。図１４において、突条部２５６は、掻取ローラ１３１の先端の塵埃を除去するように構成され、突条部２５７は、掻取ローラ１３２の先端の塵埃を除去するように構成されている。 With respect to the above-described embodiment, the ridge portion 251 arranged at a position corresponding to the gap between the tips of the scraping rollers 131 and 132 is configured to remove dust from both the scraping rollers 131 and 132. .. Alternatively, as shown in FIG. 14, two ridges 256, 257 may be provided at positions corresponding to the gaps between the tips of the scraping rollers 131, 132. In FIG. 14, the ridge portion 256 is configured to remove dust at the tip of the scraping roller 131, and the ridge portion 257 is configured to remove dust from the tip of the scraping roller 132.
　上述の実施形態に関して、送出部２５０は、カバー部材１２２の内面に設けられている。代替的に、送出部２５０は、ハウジング１２０の後部１２５の前壁部２４０（流路２４１が開口された部分の上側又は下側の部分）に設けられていてもよい。 Regarding the above-described embodiment, the delivery unit 250 is provided on the inner surface of the cover member 122. Alternatively, the delivery portion 250 may be provided on the front wall portion 240 (the portion above or below the portion where the flow path 241 is opened) of the rear portion 125 of the housing 120.
　上述の実施形態に関して、ハウジング１２０は、本体部１２１と本体部１２１から取り外し可能なカバー部材１２２とを有している。代替的に、ハウジング１２０は、カバー部材１２２に対応する部分を本体部１２１の一部として有し、カバー部材１２２に対応する部分が他の部分から分離不能な構造であってもよい。この場合、ハウジング１２０は、構造的に簡素化される。 Regarding the above-described embodiment, the housing 120 has a main body portion 121 and a cover member 122 that can be removed from the main body portion 121. Alternatively, the housing 120 may have a portion corresponding to the cover member 122 as a part of the main body portion 121, and the portion corresponding to the cover member 122 may have a structure inseparable from other parts. In this case, the housing 120 is structurally simplified.
　上述された実施形態は、以下の構成を主に備える。 The above-described embodiment mainly includes the following configurations.
　本発明の一の局面に係る吸込具は、塵埃を吸引する清掃機に取り付けられるように構成されている。吸込具は、塵埃を掻き取るようにそれぞれ回転可能に構成されているとともに先端間に空隙が形成されるように前記吸込具の幅方向において間隔を空けて配置された２つの掻取ローラと、前記２つの掻取ローラの外周部に付着した塵埃を前記２つの掻取ローラの前記先端間の前記空隙に向けて移動させるとともに、前記２つの掻取ローラの前記先端に移動した塵埃を前記２つの掻取ローラの前記先端間の前記空隙に押し出すように形成された送出部とを備えている。 The suction tool according to one aspect of the present invention is configured to be attached to a cleaning machine that sucks dust. The suction tool is configured to be rotatable so as to scrape dust, and two scraping rollers arranged at intervals in the width direction of the suction tool so as to form a gap between the tips. The dust adhering to the outer peripheral portions of the two scraping rollers is moved toward the gap between the tips of the two scraping rollers, and the dust moved to the tips of the two scraping rollers is moved to the tip of the two scraping rollers. It is provided with a delivery portion formed so as to be extruded into the gap between the tips of the scraping rollers.
　上述の構成によれば、２つの掻取ローラの外周部に付着した塵埃は、送出部により先端側に送り出される。これらの掻取ローラの先端に到達した塵埃は、送出部によってこれらの掻取ローラの先端間の空隙に押し出され、掻取ローラの外周部に付着した塵埃が除去される。 According to the above configuration, the dust adhering to the outer peripheral portions of the two scraping rollers is sent out to the tip side by the sending portion. The dust that has reached the tips of these scraping rollers is pushed out into the gap between the tips of these scraping rollers by the delivery unit, and the dust adhering to the outer peripheral portion of the scraping rollers is removed.
　上述の構成に関して、吸込具は、下方に開口した吸込空間を区画しているとともに前記吸込空間内で前記２つの掻取ローラを保持するように構成されたハウジングを更に備えていてもよい。前記送出部は、前記ハウジングの内面から前記吸込空間内に突出した突条部を含んでいてもよい。前記突条部は、前記２つの掻取ローラの一方に付着した塵埃を前記一方の掻取ローラの回転に伴って前記一方の掻取ローラの先端に向けて移動させるように傾斜した姿勢で前記一方の掻取ローラの外周部に接触する接触部と、前記接触部から前記２つの掻取ローラの前記先端間の前記空隙に入り込むように延設された押出部とを含んでいてもよい。 With respect to the above configuration, the suction tool may further include a housing configured to partition the suction space open downward and to hold the two scraping rollers in the suction space. The delivery portion may include a ridge portion protruding from the inner surface of the housing into the suction space. The ridge portion is tilted so as to move dust adhering to one of the two scraping rollers toward the tip of the one scraping roller as the one scraping roller rotates. It may include a contact portion that contacts the outer peripheral portion of one scraping roller and an extrusion portion that extends from the contact portion so as to enter the gap between the tips of the two scraping rollers.
　上述の構成によれば、一方の掻取ローラの外周部に付着した塵埃は、突条部の接触部により当該掻取ローラの先端に送り出される。その後、塵埃は、突条部の押出部により、２つの掻取ローラの先端間の空隙に押し出される。たとえば、塵埃の一部が掻取ローラの外周部に付着しており、塵埃の残りの部分が２つの掻取ローラの先端間の空隙にはみ出した状態にあるとき、空隙にはみ出した塵埃の部分は、突条部によって空隙内に押し込まれる。このとき、外周部に付着した塵埃の部分は、掻取ローラの先端側に引っ張られる。この結果、掻取ローラの外周部からの塵埃の除去が促進される。 According to the above configuration, the dust adhering to the outer peripheral portion of one scraping roller is sent to the tip of the scraping roller by the contact portion of the ridge portion. The dust is then pushed into the gap between the tips of the two scraping rollers by the extruded portion of the ridge. For example, when a part of the dust is attached to the outer peripheral portion of the scraping roller and the remaining part of the dust is in a state of protruding into the gap between the tips of the two scraping rollers, the portion of the dust protruding into the gap. Is pushed into the void by the ridges. At this time, the dust portion adhering to the outer peripheral portion is pulled toward the tip end side of the scraping roller. As a result, the removal of dust from the outer peripheral portion of the scraping roller is promoted.
　上述の構成に関して、前記ハウジングの前記内面からの前記接触部の突出量は、前記ハウジングの前記内面からの前記押出部の突出量よりも小さくてもよい。 With respect to the above configuration, the amount of protrusion of the contact portion from the inner surface of the housing may be smaller than the amount of protrusion of the extrusion portion from the inner surface of the housing.
　上述の構成によれば、突条部の接触部の突出量は、比較的小さいので、突条部は、掻取ローラに過度に強く当たらない。すなわち、突条部は、掻取ローラの回転に対して過度に大きな抵抗を生じさせない。 According to the above configuration, the protrusion amount of the contact portion of the ridge portion is relatively small, so that the ridge portion does not hit the scraping roller excessively strongly. That is, the ridges do not create excessive resistance to the rotation of the scraping roller.
　上述の構成に関して、前記送出部は、前記接触部の基端よりも更に基端側で前記一方の掻取ローラに付着した塵埃を捕捉するように前記ハウジングの前記内面から突出した他の突条部を含んでいてもよい。前記他の突条部は、前記一方の掻取ローラの回転方向において前記接触部の上流側に塵埃を送り出すように構成されていてもよい。 With respect to the above configuration, the delivery portion may project from the inner surface of the housing so as to capture dust adhering to the one scraping roller further on the proximal end side than the proximal end of the contact portion. It may include a part. The other ridge portion may be configured to send dust to the upstream side of the contact portion in the rotation direction of the one scraping roller.
　上述の構成によれば、突条部の接触部の基端よりも更に基端側で掻取ローラの外周部に付着した塵埃は、まず、他の突条部によって捕捉される。この塵埃は、他の突条部によって掻取ローラの回転方向における接触部の上流側に送り出される。この塵埃が、掻取ローラの外周部に付着したまま掻取ローラの回転により掻取ローラの軸周りに周回すると、突条部の接触部に接触し、掻取ローラの先端側への移動が更に促される。 According to the above configuration, the dust adhering to the outer peripheral portion of the scraping roller on the proximal end side of the proximal end side of the contact portion of the ridge portion is first captured by the other ridge portions. This dust is sent out to the upstream side of the contact portion in the rotation direction of the scraping roller by another ridge portion. When this dust circulates around the axis of the scraping roller by the rotation of the scraping roller while adhering to the outer peripheral portion of the scraping roller, it comes into contact with the contact portion of the ridge and moves to the tip side of the scraping roller. Further urged.
　上述の構成に関して、前記一方の掻取ローラは、前記先端に向けて細くなるテーパ形状を有していてもよい。前記接触部の突出量は、前記他の突条部の突出量よりも大きくなっていてもよい。 Regarding the above configuration, the scraping roller may have a tapered shape that tapers toward the tip. The amount of protrusion of the contact portion may be larger than the amount of protrusion of the other ridge portion.
　上述の構成によれば、掻取ローラは、先端に向けて細くなるテーパ形状を有しているので、掻取ローラに巻き付いた塵埃の巻付力の分力は、掻取ローラの先端に向きやすい。したがって、掻取ローラの先端に向かう塵埃の移動は、送出部だけでなく掻取ローラのテーパ形状によっても促される。 According to the above configuration, since the scraping roller has a tapered shape that tapers toward the tip, the component force of the dust winding force wound around the scraping roller is directed toward the tip of the scraping roller. Cheap. Therefore, the movement of dust toward the tip of the scraping roller is promoted not only by the delivery portion but also by the tapered shape of the scraping roller.
　また、接触部の突出量は、他の突条部の突出量よりも大きくなっているので、掻取ローラがテーパ形状を有していても、掻取ローラに対する接触部の当たりは、過度に弱くならない。 Further, since the amount of protrusion of the contact portion is larger than the amount of protrusion of the other protrusions, even if the scraping roller has a tapered shape, the contact portion with respect to the scraping roller is excessively hit. It doesn't get weak.
　掻取ローラが先端側において細くなっている場合、掻取ローラの先端側における塵埃の巻付力は、掻取ローラの基端側における塵埃の巻付力よりも小さくなりやすい。この結果、掻取ローラの先端側における塵埃の巻付力の分力も小さくなり、掻取ローラのテーパ形状による塵埃の送出効果は小さくなる。この送出効果の低減は、接触部が掻取ローラの外周部に接触することによって補われる。 When the scraping roller is thin on the tip side, the dust winding force on the tip side of the scraping roller tends to be smaller than the dust winding force on the base end side of the scraping roller. As a result, the component force of the dust winding force on the tip side of the scraping roller is also reduced, and the effect of delivering dust due to the tapered shape of the scraping roller is reduced. This reduction in delivery effect is compensated for by the contact portion coming into contact with the outer peripheral portion of the scraping roller.
　上述の構成に関して、吸込具は、下方に開口した吸込空間を区画しているハウジングを更に備えていてもよい。前記ハウジングは、前記吸込空間内で前記掻取ローラを保持するように構成された本体部と、前記吸込空間を上側から塞ぐように設けられているとともに前記本体部から取り外し可能に構成されたカバー部材とを含んでいてもよい。前記送出部は、前記カバー部材の内面に設けられていてもよい。 With respect to the above configuration, the suction tool may further include a housing that partitions the suction space that opens downward. The housing has a main body portion configured to hold the scraping roller in the suction space, and a cover provided so as to close the suction space from above and removable from the main body portion. It may include a member. The delivery portion may be provided on the inner surface of the cover member.
　上述の構成によれば、カバー部材は、吸込空間を上側から塞ぎ、使用者が掻取ローラに意図せず接触することを防ぐ。カバー部材が本体部から取り外されると、使用者は、吸込空間内で保持された掻取ローラに上側からアクセスすることができる。したがって、掻取ローラの点検及びメンテナンスが容易になる。加えて、本体部から取り外されたカバー部材をひっくり返すことにより、使用者は、カバー部材の内面に設けられた送出部を視認することができ、送出部の点検が容易になる。 According to the above configuration, the cover member closes the suction space from above and prevents the user from unintentionally contacting the scraping roller. When the cover member is removed from the main body portion, the user can access the scraping roller held in the suction space from above. Therefore, the inspection and maintenance of the scraping roller becomes easy. In addition, by turning over the cover member removed from the main body portion, the user can visually recognize the delivery portion provided on the inner surface of the cover member, and the inspection of the delivery portion becomes easy.
　上述の構成に関して、吸込具は、前記カバー部材を前記本体部に接続させるように構成された接続部を更に備えていてもよい。前記接続部は、前記カバー部材の下縁から突出した下爪部と、前記下爪部の上側において前記カバー部材上で所定の方向にスライド可能に構成されたスライド片とを含んでいてもよい。前記本体部には、前記下爪部がはめ込まれる係合穴部及び前記下爪部が前記係合穴部にはめ込まれた状態で前記スライド片が前記所定の方向に移動されると前記スライド片が挿入される挿入空間が形成されていてもよい。前記本体部は、前記下爪部が前記係合穴部にはめ込まれていない状態で前記カバー部材が前記吸込空間を塞ぐように前記本体部に設置されたときに、前記スライド片が前記挿入空間に挿入されないように構成されていてもよい。 With respect to the above configuration, the suction tool may further include a connecting portion configured to connect the cover member to the main body portion. The connecting portion may include a lower claw portion protruding from the lower edge of the cover member and a slide piece configured to be slidable in a predetermined direction on the cover member on the upper side of the lower claw portion. .. When the slide piece is moved in the predetermined direction while the lower claw portion is fitted into the main body portion and the lower claw portion is fitted into the engagement hole portion, the slide piece is fitted. An insertion space into which is inserted may be formed. In the main body portion, when the cover member is installed in the main body portion so as to close the suction space in a state where the lower claw portion is not fitted in the engaging hole portion, the slide piece is inserted in the insertion space. It may be configured not to be inserted into.
　上述の構成によれば、カバー部材が本体部に取り付けられるとき、カバー部材の下縁から下方に突出した下爪部が係合穴にはめ込まれる。この状態で、使用者が、カバー部材に設けられたスライド片を所定の方向にスライドさせると、スライド片は、本体部の挿入空間に挿入される。この結果、カバー部材は、下爪部及びスライド片によって本体部に接続される。 According to the above configuration, when the cover member is attached to the main body portion, the lower claw portion protruding downward from the lower edge of the cover member is fitted into the engaging hole. In this state, when the user slides the slide piece provided on the cover member in a predetermined direction, the slide piece is inserted into the insertion space of the main body portion. As a result, the cover member is connected to the main body portion by the lower claw portion and the slide piece.
　下爪部が係合穴部にはめ込まれていない状態でカバー部材が吸込空間を塞ぐように、使用者がカバー部材を本体部に設置しようとすることがある。この場合、使用者が、スライド片は挿入空間に挿入されない。したがって、使用者は、本体部に対するカバー部材の取付状態が正しくないことに気づきやすくなる。 The user may try to install the cover member on the main body so that the cover member closes the suction space when the lower claw part is not fitted in the engaging hole part. In this case, the user does not insert the slide piece into the insertion space. Therefore, the user can easily notice that the mounting state of the cover member with respect to the main body portion is not correct.
　本実施形態の原理は、清掃作業に用いられる装置に好適に利用される。 The principle of this embodiment is suitably used for an apparatus used for cleaning work.

Claims (7)

  1. 　塵埃を吸引する清掃機に取り付けられる吸込具であって、
    　塵埃を掻き取るようにそれぞれ回転可能に構成されているとともに先端間に空隙が形成されるように前記吸込具の幅方向において間隔を空けて配置された２つの掻取ローラと、
    　前記２つの掻取ローラの外周部に付着した塵埃を前記２つの掻取ローラの前記先端間の前記空隙に向けて移動させるとともに、前記２つの掻取ローラの前記先端に移動した塵埃を前記２つの掻取ローラの前記先端間の前記空隙に押し出すように形成された送出部と、を備えている、吸込具。     It is a suction tool attached to a cleaning machine that sucks dust.
    Two scraping rollers that are rotatably configured to scrape dust and are spaced apart in the width direction of the suction tool so that a gap is formed between the tips.
    The dust adhering to the outer peripheral portions of the two scraping rollers is moved toward the gap between the tips of the two scraping rollers, and the dust moved to the tips of the two scraping rollers is moved to the tip of the two scraping rollers. A suction tool comprising a delivery portion formed to push into the gap between the tips of the scraping rollers.
  2. 　下方に開口した吸込空間を区画しているとともに前記吸込空間内で前記２つの掻取ローラを保持するように構成されたハウジングを更に備え、
    　前記送出部は、前記ハウジングの内面から前記吸込空間内に突出した突条部を含み、
    　前記突条部は、前記２つの掻取ローラの一方に付着した塵埃を前記一方の掻取ローラの回転に伴って前記一方の掻取ローラの先端に向けて移動させるように傾斜した姿勢で前記一方の掻取ローラの外周部に接触する接触部と、前記接触部から前記２つの掻取ローラの前記先端間の前記空隙に入り込むように延設された押出部と、を含んでいる、請求項１に記載の吸込具。     Further comprising a housing configured to partition the suction space open downward and to hold the two scraping rollers in the suction space.
    The delivery portion includes a ridge portion protruding from the inner surface of the housing into the suction space.
    The ridge portion is tilted so as to move dust adhering to one of the two scraping rollers toward the tip of the one scraping roller as the one scraping roller rotates. A claim comprising a contact portion in contact with the outer peripheral portion of one scraping roller and an extrusion portion extending from the contact portion so as to enter the gap between the tips of the two scraping rollers. Item 1. The suction tool according to Item 1.
  3. 　前記ハウジングの前記内面からの前記接触部の突出量は、前記ハウジングの前記内面からの前記押出部の突出量よりも小さい、請求項２に記載の吸込具。 The suction tool according to claim 2, wherein the amount of protrusion of the contact portion from the inner surface of the housing is smaller than the amount of protrusion of the extrusion portion from the inner surface of the housing.
  4. 　前記送出部は、前記接触部の基端よりも更に基端側で前記一方の掻取ローラに付着した塵埃を捕捉するように前記ハウジングの前記内面から突出した他の突条部を含み、
    　前記他の突条部は、前記一方の掻取ローラの回転方向において前記接触部の上流側に塵埃を送り出すように構成されている、請求項２又は３に記載の吸込具。     The delivery portion includes another ridge portion that protrudes from the inner surface of the housing so as to catch dust adhering to the one scraping roller on the proximal end side of the proximal end of the contact portion.
    The suction tool according to claim 2 or 3, wherein the other ridge portion is configured to send dust to the upstream side of the contact portion in the rotation direction of the one scraping roller.
  5. 　前記一方の掻取ローラは、前記先端に向けて細くなるテーパ形状を有し、
    　前記接触部の突出量は、前記他の突条部の突出量よりも大きくなっている、請求項２乃至４のいずれか１項に記載の吸込具。     The one scraping roller has a tapered shape that tapers toward the tip.
    The suction tool according to any one of claims 2 to 4, wherein the protruding amount of the contact portion is larger than the protruding amount of the other ridge portion.
  6. 　下方に開口した吸込空間を区画しているハウジングを更に備え、
    　前記ハウジングは、前記吸込空間内で前記掻取ローラを保持するように構成された本体部と、前記吸込空間を上側から塞ぐように設けられているとともに前記本体部から取り外し可能に構成されたカバー部材と、を含み、
    　前記送出部は、前記カバー部材の内面に設けられている、請求項１に記載の吸込具。     Further equipped with a housing that partitions the suction space that opens downward,
    The housing has a main body portion configured to hold the scraping roller in the suction space, and a cover provided so as to close the suction space from above and removable from the main body portion. Including parts and
    The suction tool according to claim 1, wherein the delivery unit is provided on the inner surface of the cover member.
  7. 　前記カバー部材を前記本体部に接続させるように構成された接続部を更に備え、
    　前記接続部は、前記カバー部材の下縁から突出した下爪部と、前記下爪部の上側において前記カバー部材上で所定の方向にスライド可能に構成されたスライド片と、を含み、
    　前記本体部には、前記下爪部がはめ込まれる係合穴部及び前記下爪部が前記係合穴部にはめ込まれた状態で前記スライド片が前記所定の方向に移動されると前記スライド片が挿入される挿入空間が形成され、
    　前記本体部は、前記下爪部が前記係合穴部にはめ込まれていない状態で前記カバー部材が前記吸込空間を塞ぐように前記本体部に設置されたときに、前記スライド片が前記挿入空間に挿入されないように構成されている、請求項６に記載の吸込具。     Further, a connecting portion configured to connect the cover member to the main body portion is provided.
    The connection portion includes a lower claw portion protruding from the lower edge of the cover member, and a slide piece configured to be slidable in a predetermined direction on the cover member on the upper side of the lower claw portion.
    When the slide piece is moved in the predetermined direction while the lower claw portion is fitted into the main body portion and the lower claw portion is fitted into the engagement hole portion, the slide piece is fitted. The insertion space is formed and
    In the main body portion, when the cover member is installed in the main body portion so as to close the suction space in a state where the lower claw portion is not fitted in the engaging hole portion, the slide piece is inserted in the insertion space. The suction device according to claim 6, which is configured so as not to be inserted into.
PCT/JP2021/005936 2020-06-17 2021-02-17 Suction tool WO2021256001A1 (en)

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CN202180043240.8A CN115884702A (en) 2020-06-17 2021-02-17 Inhalation device

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000166826A (en) * 1998-12-10 2000-06-20 Matsushita Electric Ind Co Ltd Vacuum cleaner
JP2008000382A (en) * 2006-06-23 2008-01-10 Hitachi Appliances Inc Suction port body for vacuum cleaner and vacuum cleaner with suction port body
JP2015136396A (en) * 2014-01-20 2015-07-30 日立アプライアンス株式会社 vacuum cleaner
WO2019115992A1 (en) * 2017-12-12 2019-06-20 Dyson Technology Limited A cleaner head for a vacuum cleaner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000166826A (en) * 1998-12-10 2000-06-20 Matsushita Electric Ind Co Ltd Vacuum cleaner
JP2008000382A (en) * 2006-06-23 2008-01-10 Hitachi Appliances Inc Suction port body for vacuum cleaner and vacuum cleaner with suction port body
JP2015136396A (en) * 2014-01-20 2015-07-30 日立アプライアンス株式会社 vacuum cleaner
WO2019115992A1 (en) * 2017-12-12 2019-06-20 Dyson Technology Limited A cleaner head for a vacuum cleaner

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