WO2023026692A1 - Suction nozzle for vacuum cleaners and vacuum cleaner provided with suction nozzle - Google Patents

Suction nozzle for vacuum cleaners and vacuum cleaner provided with suction nozzle Download PDF

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Publication number
WO2023026692A1
WO2023026692A1 PCT/JP2022/026260 JP2022026260W WO2023026692A1 WO 2023026692 A1 WO2023026692 A1 WO 2023026692A1 JP 2022026260 W JP2022026260 W JP 2022026260W WO 2023026692 A1 WO2023026692 A1 WO 2023026692A1
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WO
WIPO (PCT)
Prior art keywords
scraping
dust
suction
space
pair
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Application number
PCT/JP2022/026260
Other languages
French (fr)
Japanese (ja)
Inventor
裕介 布施野
剛 羽田野
政紀 貞広
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 CN202280056299.5A priority Critical patent/CN117813035A/en
Publication of WO2023026692A1 publication Critical patent/WO2023026692A1/en

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    • 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 nozzle for a vacuum cleaner and a vacuum cleaner equipped with the suction nozzle.
  • Patent Document 1 discloses a vacuum cleaner 900 shown in FIG.
  • the cleaner 900 includes a cleaner main body 910 that incorporates a suction source that generates a suction force for sucking dust, and a dust pipe extending from the cleaner main body 910 through which the dust sucked by the suction force of the suction source flows. 920 and.
  • a suction nozzle 930 wider than the dust pipe 920 is attached to the tip of the dust pipe 920 to suck dust on the floor over a wide range.
  • the suction nozzle 930 includes a wide nozzle case 931 and a pair of scraping rollers 951 and 952 that are cantilevered by the nozzle case 931 and scrape dust on the floor surface.
  • the nozzle case 931 has a substantially C-shaped case body 932 that opens forward, and a cover member 933 that closes a suction space 940 surrounded by the case body 932 from above and from the front.
  • a suction space 940 surrounded by the case body 932 and the cover member 933 is provided for sucking up dust on the floor.
  • Take-up rollers 951 and 952 are arranged to face each other.
  • a drive unit is provided in the case main body 932 to rotationally drive the pair of scraping rollers 951 and 952 .
  • the case body 932 includes a central case portion 934 elongated in the width direction of the nozzle case 931, a left case portion 935 protruding forward from the left end of the central case portion 934, and a right case portion protruding forward from the right end of the central case portion 934. 936 and .
  • a communicating portion 941 that forms a flow path that communicates the dust pipe 920 with the suction space 940 is provided in the central portion of the nozzle case 931 in the width direction (that is, the central portion of the central case portion 934).
  • the communicating portion 941 has a channel portion 942 extending in the front-rear direction inside the central case portion 934, and a connecting pipe portion 943 extending further rearward from the rear end of the channel portion 942.
  • a dust pipe 920 is connected to the rear end of the portion 943 .
  • a rotating shaft protruding from the scraping roller 951 is attached to the left case portion 935 , and the base end of the rotating shaft is connected to the driving portion inside the left case portion 935 .
  • a rotating shaft protruding from the scraping roller 952 is also attached to the right case portion 936 , and the base end of this rotating shaft is connected to the driving portion within the right case portion 936 .
  • the left scraping roller 951 extends rightward from the vicinity of the left case portion 935 in the suction space 940, and the tip of the scraping roller 951 is positioned near the central position of the suction space 940 in the width direction.
  • the scraping roller 951 has a tapered tubular roller body 953 that tapers toward its tip, and a plurality of brush bands 954 provided on the outer peripheral surface of the roller body 953 .
  • the scraping roller 952 on the right side has a symmetrical structure with the scraping roller 951 on the left side.
  • a space 956 is formed between the tip surfaces 955 of the left and right scraping rollers 951 and 952 .
  • the space 956 is located on the front side with respect to the communicating portion 941 .
  • the suction source of the cleaner main body 910 is generating suction force
  • the scraping rollers 951 and 952 are rotated within the suction space 940 by the driving force of the drive section.
  • the brush bands 954 of the scraping rollers 951 and 952 scrape dust on the floor surface.
  • the scraped dust is sucked up in the suction space 940 and flows into the main body 910 of the cleaner through the dust pipe 920 connected to the connecting pipe portion 943 of the communicating portion 941 .
  • the suction nozzle 930 of Patent Document 1 makes it possible to remove dust wrapped around the scraping rollers 951 and 952 through a space 956 between the tip surfaces 955 of the scraping rollers 951 and 952. 956 may become stuck with dust. In this state, removal of dust wound around the scraping rollers 951 and 952 is not facilitated, and the amount of dust wound around the scraping rollers 951 and 952 may increase over time.
  • An object of the present disclosure is to provide a suction nozzle improved to further facilitate removal of dust wrapped around the scraping roller, and a cleaner provided with the suction nozzle.
  • the suction nozzle is configured to be connectable to a dust conduit that sucks dust by the suction force generated by the suction source of the cleaner body.
  • the suction nozzle includes a nozzle case that defines a suction space for sucking dust, a communication portion that forms a flow path that opens into the suction space in the nozzle case and is configured to be connectable to the dust pipe, and a driving force. and a tip that is opposed to the tip with a gap in the left-right direction. and a pair of scraping rollers configured to feed toward.
  • the ends of the pair of scraping rollers include inclined surfaces that are inclined with respect to the axes of the pair of scraping rollers, and when the pair of scraping rollers are rotated by the drive unit, the width of the space between the inclined surfaces is It allows the channel to be wide on the opening side and narrow on the opposite side of the opening.
  • a vacuum cleaner includes a vacuum cleaner main body that incorporates the above-described suction nozzle and a suction source that generates a suction force for sucking dust, and an extension from the cleaner main body that is sucked by the suction force of the suction source. and a dust pipe through which dust flows.
  • a dirt line is connected to the suction nozzle.
  • suction nozzle and the vacuum cleaner described above are configured to promote the removal of dust caught in the space between the inclined surfaces at the tips of the pair of scraping rollers, the transfer of dust toward the tips of the scraping rollers is facilitated. Promoted.
  • FIG. 1 Schematic side view of vacuum cleaner Perspective view of vacuum cleaner suction nozzle Disassembled perspective view of suction nozzle Perspective view of suction nozzle Exploded view of scraping roller of suction nozzle Bottom view of suction nozzle Diagram showing the internal structure of the suction nozzle Diagram showing forces acting on dust wrapped around the scraping roller A diagram showing the shape of the space between a pair of scraping rollers. A diagram showing the shape of the space between a pair of scraping rollers. A diagram showing the shape of the space between a pair of scraping rollers. A diagram showing the shape of the space between a pair of scraping rollers. A diagram showing the shape of the space between a pair of scraping rollers. A diagram showing the shape of the space between a pair of scraping rollers. A diagram showing the shape of the space between a pair of scraping rollers. Schematic side view of a conventional vacuum cleaner Perspective view of a suction nozzle of a conventional vacuum cleaner
  • the cleaner 101 includes a cleaner main body 110, a dust conduit 103 extending from the cleaner main body 110, and a suction nozzle 100 attached to the tip of the dust conduit 103. ing.
  • the vacuum cleaner main body 110 incorporates a suction source 102 that generates a suction force for sucking dust. Dust sucked by the suction force of the suction source 102 flows through the dust pipe 103 .
  • the dust conduit 103 includes a flexible hose 105 connected to the cleaner main body 110, a tip tube 106 connected to the suction nozzle 100, and a grip tube connectable to the hose 105 and the tip tube 106. 107 and .
  • the gripping tube 107 includes a tube portion 108 formed to be connectable to the distal end of the hose 105 and the proximal end of the distal tube 106, and a rod-shaped gripping portion 109 branched from the tube portion 108 and formed to be grippable by the user. and includes The grip portion 109 is provided with an operation portion 104 that is operated to operate the cleaner main body 110 and the suction nozzle 100 .
  • a suction nozzle 100 is attached to the tip tube 106 of the dust conduit 103 in order to obtain a suction area that is laterally wider than the flow path formed by the dust conduit 103 .
  • the suction nozzle 100 includes a nozzle case 120 that is wide in the left-right direction, and a communicating portion 130 that has a connecting pipe 131 extending rearward from the nozzle case 120 .
  • a connecting pipe 131 of the communicating portion 130 is configured to be connectable to the dust conduit 103 .
  • the nozzle case 120 includes a substantially C-shaped case body 121 that opens forward, and a cover member 122 attached to the case body 121 from above.
  • the case main body 121 includes a central case portion 123 elongated in the left-right direction, a left case portion 124 provided to protrude forward from the left end of the central case portion 123, and a right end of the central case portion 123 to protrude forward. and a right case portion 125 provided.
  • the cover member 122 is formed so as to close the upper and front sides of the space surrounded by the central case portion 123 , the left case portion 124 and the right case portion 125 .
  • a space defined by the cover member 122, the central case portion 123, the left case portion 124, and the right case portion 125 is referred to as a "suction space 126" in the following description.
  • the suction space 126 is open downward, and dust on the floor surface is sucked into the cleaner main body 110 through the suction space 126 .
  • the front wall 127 of the central case portion 123 defines the rear end of the suction space 126, as shown in FIG. ing.
  • the communicating portion 130 extends rearward from the opening 128 in the central case portion 123 to form a flow path 132 connected to the connecting pipe 131 , so that the suction space 126 communicates with the internal space of the dust pipe 103 .
  • the communication part 130 is configured on the rear side of the suction space 126 , and when the suction source 102 of the cleaner body 110 is operated, the suction force of the suction source 102 moves backward toward the communication part 130 in the suction space 126 . A flowing suction airflow is generated.
  • a pair of scraping rollers 141 and 142 that are long in the left-right direction are arranged with a gap in the left-right direction.
  • bearings are provided on the walls facing the suction space 126 in the left case 124 and the right case 125. As shown in FIG.
  • the scraping roller 141 on the left side has a structure symmetrical to the scraping roller 142 on the right side. Therefore, only the left scraping roller 141 will be described below.
  • the scraping roller 141 has a roller body 143 and a plurality of brush bands 144 attached to the outer peripheral surface of the roller body 143, as shown in FIG.
  • the scraping roller 141 also has a tip member 145 attached to the tip of the roller body 143 to form the tip of the scraping roller 141, as shown in FIG.
  • the roller body 143 has an axial length shorter than half the length of the suction space 126 in the left-right direction.
  • a rotary shaft 153 protrudes from the base end of the roller body 143 , and the rotary shaft 153 is fitted into the bearing portion provided on the wall portion of the left case portion 124 .
  • the scraping roller 141 is cantilevered by the nozzle case 120 on the base end side.
  • the roller body 143 has a tapered shape that tapers from the base end to the tip end.
  • a mounting hole 146 for mounting the tip member 145 is formed in the tip surface of the roller body 143 .
  • a plurality of spiral grooves 147 are formed on the outer peripheral surface of the roller body 143 . These spiral grooves 147 are formed at intervals in the circumferential direction of the roller body 143 . Attached to these spiral grooves 147 are brush strips 144 . The roller main body 143 and the brush band 144 constitute the outer peripheral portion of the scraping roller 141 .
  • the helical shape of the helical groove 147 is such that when the scraping roller 141 rotates in the direction of the arrow in FIG. is set to
  • the brush band 144 protrudes from the outer peripheral surface of the roller body 143 when attached to the spiral groove 147, and rubs against the floor surface when the scraping roller 142 rotates.
  • the brush band 144 is soft enough not to damage the floor surface when rubbed against it.
  • the amount of protrusion of the brush band 144 from the outer peripheral surface of the roller body 143 is substantially constant over the entire length of the roller body 143 .
  • the tip member 145 includes a fitting portion 148 having a shape complementary to the mounting hole portion 146 of the roller body 143 and a tip piece 151 having a larger diameter than the fitting portion 148 .
  • the tip member 145 is fixed to the tip of the roller body 143 .
  • the surface of the tip piece 151 opposite to the insertion portion 148 forms the tip of the scraping roller 141 and is inclined with respect to the axis of the scraping roller 141 (that is, perpendicular to the axis of the scraping roller 141). not).
  • the space on the front side of the scraping roller 141 is, as shown in FIG.
  • the scraping roller 141 is arranged so that the outer peripheral portion of the scraping roller 141 is along the front side portion of the nozzle case 120 (that is, the inner surface of the cover member 122). is held in a tilted position. That is, as shown in FIG.
  • the scraping roller 141 is arranged from the proximal end of the scraping roller 141 so that a uniform space width can be obtained along the longitudinal direction of the roller main body 143 on the front side of the scraping roller 141 . It is attached to the left case part 124 in a posture inclined forward toward the tip. In addition, the scraping roller 141 is held in a posture inclined downward according to the tapered shape of the roller body 143 so that the brush band 144 uniformly contacts the floor surface along the longitudinal direction of the roller body 143 .
  • the inclined surfaces 149 at the tips of the scraping rollers 141 and 142 face each other with a gap in the left-right direction.
  • a space 152 is formed between these inclined surfaces 149 .
  • the space 152 is formed in front of the opening 128 of the communicating portion 130 .
  • the space 152 is used to remove dust wrapped around the scraping roller 141 .
  • a drive unit 160 is provided inside the case body 121, as shown in FIG.
  • the drive unit 160 includes a drive mechanism 161 provided on the left side of the internal space of the case body 121 and a drive mechanism 162 provided on the right side.
  • a drive mechanism 161 is provided to drive the scraping roller 141 on the left side
  • a drive mechanism 162 is provided to drive the scraping roller 142 on the right side. That is, the driving section 160 is configured to rotate the pair of scraping rollers 141 and 142 individually using the driving mechanisms 161 and 162 . Since the left drive mechanism 161 has a symmetrical structure with the right drive mechanism 162, only the left drive mechanism 161 will be described.
  • the driving mechanism 161 includes a motor 163 that generates driving force for rotating the scraping roller 141 and a driving belt 169 that transmits the driving force to the rotating shaft 153 .
  • the motor 163 includes a motor body 164 arranged within the central case portion 123 and a motor shaft 165 protruding from the motor body 164 toward the left case portion 124 .
  • Pulleys are attached to the motor shaft 165 and the rotary shaft 153 provided on the scraping roller 141 , and a driving belt 169 is wound around these pulleys inside the left case portion 124 .
  • a control board 168 is arranged below the motor main body 164 , and the control board 168 is electrically connected to the motor 163 and the operation section 104 provided on the grip tube 107 .
  • the control board 168 is configured to operate or stop the motor 163 according to the operation on the operation unit 104 .
  • the scraping rollers 141 and 142 are individually driven by the motors 163 of the drive mechanisms 161 and 162.
  • the motor 163 is configured to reduce the rotational speed of the motor shaft 165 as the load applied to the scraping rollers 141 and 142 increases. Therefore, if the load on the scraping roller 141 is higher than the load on the scraping roller 142 , the rotational speed of the scraping roller 141 will be lower than the rotational speed of the scraping roller 142 .
  • the scraping rollers 141 and 142 are rotationally driven within the suction space 126 by the driving force of the motor 163 .
  • the brush band 144 rubs against the floor surface. As a result, dust adhering to the floor surface is scraped off by the brush band 144 .
  • long dust for example, hair
  • the scraping rollers 141 and 142 When the scraping rollers 141 and 142 are scraping dust on the floor surface, long dust (for example, hair) may wind around the scraping rollers 141 and 142 as shown in FIG. Since the scraping rollers 141 and 142 have a tapered shape that tapers toward the tip, the component force of the long dust winding force tends to be directed toward the tip side of the scraping rollers 141 and 142 . Therefore, the long dust wound around the scraping rollers 141 and 142 can be moved toward the tips of the scraping rollers 141 and 142 .
  • Dust that has moved toward the tips of the scraping rollers 141 and 142 can leave the scraping rollers 141 and 142 through the space 152 between the inclined surfaces 149 of the scraping rollers 141 and 142 .
  • the dust separated from the scraping rollers 141 and 142 is sucked into the communicating portion 130 behind the space 152 by the suction force of the suction source 102 .
  • the dust wrapped around the scraping rollers 141 and 142 can be removed from these scraping rollers 141 and 142 through the space 152 as described above, a state in which the dust is caught in the space 152 can occur.
  • the transfer of the dust toward the leading ends of the scraping rollers 141 and 142 is delayed, and the amount of dust wrapped around the scraping rollers 141 and 142 increases.
  • the load applied to the scraping rollers 141 and 142 increases, or the scraping ability of the scraping rollers 141 and 142 decreases. Therefore, the inclined surfaces 149 of the scraping rollers 141 and 142 are inclined with respect to the axes of the scraping rollers 141 and 142 so as to promote the removal of dust caught in the space 152 .
  • the space 152 has a wide portion where the width of the space 152 is large and a space There is a narrow portion where the width of 152 is narrowed.
  • the relative positions of the wide portion and the narrow portion of the communicating portion 130 with respect to the opening 128 change as the scraping rollers 141 and 142 rotate.
  • the width of the space 152 between the inclined surfaces 149 is narrow on the opening 128 side of the communicating portion 130 and wide on the side opposite to the opening 128. . That is, the width of the space 152 between the inclined surfaces 149 narrows rearward (that is, in the direction of the intake airflow in the intake space 126). In this case, even if the dust caught in the space 152 is sucked backward by the suction force of the suction source 102 , it is caught on the inclined surface 149 and is difficult to leave the space 152 .
  • the width of the space 152 is wide on the opening 128 side of the communicating portion 130 and narrow on the side opposite to the opening 128 . That is, the width of the space 152 widens rearward (that is, in the direction of the intake airflow in the intake space 126). Therefore, when the dust receives the suction force of the suction source 102 , the dust can be removed backward without being caught on the inclined surface 149 . As a result, the state in which dust is caught in the space 152 can be eliminated in a short period of time, and the transfer of the dust toward the leading ends of the scraping rollers 141 and 142 is facilitated.
  • the rotational speeds of the scraping rollers 141 and 142 can be changed individually according to the load applied to these scraping rollers 141 and 142. Therefore, the rotational phase relationship of the scraping rollers 141 and 142 can change depending on the load applied to these scraping rollers 141 and 142 . For example, in FIGS. 9 and 10, the rotation phases of the scraping rollers 141 and 142 match each other. The rotational phase can lag the rotational phase of the scraping roller 142 .
  • FIG. 11 shows a state in which the rotational phase of the scraping roller 141 is shifted by 90° with respect to the rotational phase of the scraping roller 142 from the state shown in FIG.
  • the point P on the inclined surface 149 of the scraping roller 141 which is the most distal, is positioned to face the point Q, which is the most distal on the inclined surface 149 of the scraping roller 142, in the left-right direction.
  • point PQ the width of the space 152 is the narrowest.
  • the tip surfaces of the scraping rollers 141 and 142 are entirely composed of the inclined surface 149 .
  • part of the tip surfaces of the scraping rollers 141 and 142 may be formed by inclined surfaces 149 .
  • the portion of the tip surface other than the inclined surface 149 may be a surface 171 perpendicular to the axes of the scraping rollers 141 and 142 .
  • the dust caught between the surfaces 171 is more difficult to remove than the dust caught between the inclined surfaces 149 , but can be removed by changing the relative rotation phase between the scraping rollers 141 and 142 .
  • the tip piece 151 of the tip member 145 forming the inclined surface 149 is plate-shaped, and the inclined surface 149 is flat.
  • tip piece 151 may be conical.
  • the inclined surface 149 is formed by the peripheral surface of the tip piece 151 .
  • the tops of the tip pieces 151 are formed on the axes of the scraping rollers 141 and 142.
  • the positional relationship between the tops of the tip pieces 151 of the scraping rollers 141 and 142 is the rotational phase of the scraping rollers 141 and 142.
  • the positional relationship between the tops of the tip pieces 151 of the scraping rollers 141 and 142 is Varies with relative changes in rotational phase. Therefore, the position of the narrowest portion in the space 152 changes with changes in the relative rotational phases of the scraping rollers 141 and 142 . As a result, the narrowest space 152 before the change in the relative rotational phases of the scraping rollers 141 and 142 widens after the change in the relative rotational phases of the scraping rollers 141 and 142. The removal of dust caught in the portion is promoted.
  • the space 152 can be made into various shapes.
  • the tip member 145 having the tip piece 151 is formed separately from the roller main body 143. Therefore, by changing the design of the tip member 145, the design of the roller main body 143 can be changed.
  • the space 152 can be formed into a desired shape without any need. If there is no need to change the shape of the space 152, a structure in which the roller main body 143 and the tip member 145 are integrated as one member may be adopted.
  • the scraping rollers 141 and 142 are individually rotationally driven by the motors 163 of the drive mechanisms 161 and 162.
  • the scraping rollers 141, 142 may be driven by a common motor.
  • the scraping rollers 141 and 142 may be connected to a common motor in a state in which the rotational phases of the scraping rollers 141 and 142 match each other (that is, the state shown in FIG. 9 or 10). If the scraping rollers 141 and 142 rotate in such a state, a state in which the width of the space 152 expands rearward is obtained periodically.
  • the space 152 and the opening 128 of the communicating portion 130 face each other in the front-rear direction.
  • the space 152 may be offset to the left or right with respect to the opening 128 as long as the suction force from the suction source 102 acts to move the dust trapped in the space 152 away from the space 152. good too.
  • the suction nozzle 100 is used in the canister-type vacuum cleaner 101.
  • the suction nozzle 100 may be used with a stick vacuum cleaner or a handheld vacuum cleaner.
  • the suction nozzle 100 according to the embodiment described above has the following features and the following effects.
  • the suction nozzle is configured to be connectable to a dust conduit that sucks dust by the suction force generated by the suction source of the cleaner body.
  • the suction nozzle includes a nozzle case defining a suction space for sucking dust, and a communicating portion formed in the nozzle case with a flow path opening to the suction space and connectable to the dust pipe. and a driving portion that generates a driving force, and a front end that is arranged opposite to the driving portion with a gap in the left-right direction. and a pair of scraping rollers configured to push the collected dust toward the tip.
  • the ends of the pair of scraping rollers include inclined surfaces that are inclined with respect to the axes of the pair of scraping rollers, and when the pair of scraping rollers are rotated by the drive unit, the width of the space between the inclined surfaces is It allows the channel to be wide on the opening side and narrow on the opposite side of the opening.
  • the drive unit rotates the pair of scraping rollers
  • these scraping rollers scrape dust.
  • long pieces of dust may wind around the scraping rollers, and the dust wound around the scraping rollers is sent out toward the tips of the pair of scraping rollers.
  • a clump of dust may be caught in the space between the tips of the pair of scraping rollers.
  • a lump of dust caught in this space is sucked by the suction force of the suction source acting on the suction space through the communicating portion.
  • the tip of the pair of scraping rollers includes an inclined surface that is inclined with respect to the axis of the pair of scraping rollers so that the suction force can separate the clumps of dust from the space between the tips.
  • the space between the inclined surfaces can be narrowed on the opening side of the channel formed by the communicating portion and widened on the opposite side of the opening during the rotation of the pair of scraping rollers.
  • the width of the space between the inclined surfaces becomes wider on the opening side of the flow path. In this state, clumps of dust caught in the space between the inclined surfaces leave the space without being disturbed by the inclined surfaces of the pair of scraping rollers, and are sucked into the main body of the cleaner through the communicating portion and the dust pipe.
  • the driving unit rotates and drives the pair of scraping rollers individually, and the rotation phase of one of the pair of scraping rollers lags behind the rotation phase of the other scraping roller. It may be configured to allow The narrowest position between the inclined surfaces may be changed by changing the relative relationship of the rotation phases of the pair of scraping rollers.
  • the drive unit changes the rotational phase of the one scraping roller relative to the rotational phase of the other scraping roller. may be configured to allow delays.
  • the pair of scraping rollers may be configured such that the space between the inclined surfaces faces the opening of the flow path.
  • the space between the inclined surfaces faces the opening of the flow channel, so that the space between the inclined surfaces is wide on the opening side of the flow channel and narrow on the opposite side to the opening of the flow channel.
  • each of the pair of scraping rollers may have a tapered shape that tapers toward the tip.
  • the nozzle case may be configured to hold the pair of scraping rollers in an inclined posture so that the outer peripheral portions of the pair of scraping rollers follow the inner surface of the nozzle case on the side opposite to the opening of the flow path. .
  • each of the pair of scraping rollers has a tapered shape that tapers toward the tip, so that the dust wrapped around these scraping rollers can be moved to the tip side. Even if the pair of scraping rollers has a tapered shape, by holding these scraping rollers in an inclined posture, the outer peripheral portions of these scraping rollers can be made to follow the inner surface of the nozzle case. This prevents formation of an excessively wide space between the outer peripheral portion of the scraping roller and the inner surface of the nozzle case on the side opposite to the opening of the flow path, and prevents dust from being formed in the longitudinal direction of the scraping roller. It becomes possible to suppress the occurrence of a portion where the suction capacity is excessively low.
  • the scraping rollers are arranged in an inclined posture in this way, if the tips of the scraping rollers are formed in planes perpendicular to the axes of the scraping rollers, the distance between the tips of the pair of scraping rollers will be reduced.
  • the space has a shape that narrows toward the opening of the channel. In this case, dust caught between the tips of these scraping rollers is caught on the tip surfaces of the scraping rollers and is difficult to remove from the space between the tips of the scraping rollers.
  • the tips of the pair of scraping rollers include the above-described inclined surfaces, it is possible to obtain a state in which the space between the inclined surfaces expands toward the opening of the flow path, and dust from between the inclined surfaces can be obtained. promotes the removal of
  • each of the pair of scraping rollers has a roller body extending in the left-right direction, and a tip member provided separately from the roller body and configured to be attachable to the tip of the roller body.
  • the inclined surface may be formed on the tip member.
  • the inclined surface is formed not on the roller main body but on the tip member provided separately from the roller main body. If the tip member is attached to the roller body, an inclined surface can be provided at the tip of the scraping roller.
  • the inclined surface is formed on the tip member provided separately from the roller main body, it is possible to change the shape of the tip member without changing the shape of the roller main body itself. It becomes possible to change the shape of the space of Therefore, it becomes easy to change the design of the scraping roller.
  • a vacuum cleaner includes a vacuum cleaner main body that includes the above-described suction nozzle and a suction source that generates a suction force for sucking dust; a dust conduit through which dust sucked by the suction force of the source flows.
  • a dirt line is connected to the suction nozzle.
  • the technology of this embodiment is suitably used for devices used for cleaning work.

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  • Nozzles For Electric Vacuum Cleaners (AREA)

Abstract

Disclosed in the present application is a suction nozzle comprising: a nozzle case which defines a suction space for suctioning dust; a communication portion which forms in the nozzle case a flow path that opens into the suction space and which is connectable to a dust duct; and a pair of scraping rollers which have respective ends that are disposed opposite each other with an interval therebetween in the left-right direction, and which scrape up dust while rotating in the suction space and while also feeding toward the respective ends dust that has been taken up. The ends of the pair of scraping rollers include inclined surfaces which are inclined with respect to the axes of the pair of scraping rollers, and allow a state in which, when the pair of scraping rollers are rotated by a driving unit, the width of a space between inclined surfaces is large at the opening side of the flow path and small at the side opposite from the opening.

Description

掃除機用の吸込ノズル及び吸込ノズルを備えた掃除機Suction nozzle for vacuum cleaner and vacuum cleaner with suction nozzle
　本発明は、掃除機用の吸込ノズル及び吸込ノズルを備えた掃除機に関する。 The present invention relates to a suction nozzle for a vacuum cleaner and a vacuum cleaner equipped with the suction nozzle.
　特許文献１は、図１５に示す掃除機９００を開示している。掃除機９００は、塵埃を吸引する吸引力を発生する吸引源を内蔵した掃除機本体９１０と、掃除機本体９１０から延設されて、吸引源の吸引力により吸い込まれた塵埃が流れる塵埃管路９２０と、を備えている。塵埃管路９２０の先端には、床面上の塵埃を広い範囲で吸引するために、塵埃管路９２０よりも幅広の吸込ノズル９３０が取り付けられている。 Patent Document 1 discloses a vacuum cleaner 900 shown in FIG. The cleaner 900 includes a cleaner main body 910 that incorporates a suction source that generates a suction force for sucking dust, and a dust pipe extending from the cleaner main body 910 through which the dust sucked by the suction force of the suction source flows. 920 and. A suction nozzle 930 wider than the dust pipe 920 is attached to the tip of the dust pipe 920 to suck dust on the floor over a wide range.
　吸込ノズル９３０は、図１６に示すように、幅広のノズルケース９３１と、ノズルケース９３１によって片持ち支持されて、床面上の塵埃を掻き取る一対の掻取ローラ９５１，９５２と、を備えている。 As shown in FIG. 16, the suction nozzle 930 includes a wide nozzle case 931 and a pair of scraping rollers 951 and 952 that are cantilevered by the nozzle case 931 and scrape dust on the floor surface. there is
　ノズルケース９３１は、前方に開口した略Ｃ型のケース本体９３２と、ケース本体９３２によって囲まれた吸込空間９４０を上側及び前側から塞ぐカバー部材９３３と、を有している。ケース本体９３２とカバー部材９３３とによって囲まれた吸込空間９４０は、床面上の塵埃を吸い上げるために設けられており、吸込空間９４０内には、床面上の塵埃を掻き取る左右一対の掻取ローラ９５１，９５２が対向配置されている。一対の掻取ローラ９５１，９５２を回転駆動するために、駆動部がケース本体９３２内に設けられている。 The nozzle case 931 has a substantially C-shaped case body 932 that opens forward, and a cover member 933 that closes a suction space 940 surrounded by the case body 932 from above and from the front. A suction space 940 surrounded by the case body 932 and the cover member 933 is provided for sucking up dust on the floor. Take- up rollers 951 and 952 are arranged to face each other. A drive unit is provided in the case main body 932 to rotationally drive the pair of scraping rollers 951 and 952 .
　ケース本体９３２は、ノズルケース９３１の幅方向に細長い中央ケース部９３４と、中央ケース部９３４の左端から前方に突出した左ケース部９３５と、中央ケース部９３４の右端から前方に突出した右ケース部９３６と、を有している。 The case body 932 includes a central case portion 934 elongated in the width direction of the nozzle case 931, a left case portion 935 protruding forward from the left end of the central case portion 934, and a right case portion protruding forward from the right end of the central case portion 934. 936 and .
　ノズルケース９３１の幅方向における中央部分（すなわち、中央ケース部９３４の中央部分）には、塵埃管路９２０を吸込空間９４０と連通させる流路を形成する連通部９４１が設けられている。連通部９４１は、中央ケース部９３４内において前後方向に延びる流路部９４２と、流路部９４２の後端から更に後方に延設された連結管部９４３と、を有しており、連結管部９４３の後端に塵埃管路９２０が連結される。 A communicating portion 941 that forms a flow path that communicates the dust pipe 920 with the suction space 940 is provided in the central portion of the nozzle case 931 in the width direction (that is, the central portion of the central case portion 934). The communicating portion 941 has a channel portion 942 extending in the front-rear direction inside the central case portion 934, and a connecting pipe portion 943 extending further rearward from the rear end of the channel portion 942. A dust pipe 920 is connected to the rear end of the portion 943 .
　左ケース部９３５には、掻取ローラ９５１から突出した回転シャフトが取り付けられており、回転シャフトの基端部は、左ケース部９３５の内部で駆動部に接続されている。右ケース部９３６にも、掻取ローラ９５２から突出した回転シャフトが取り付けられており、この回転シャフトの基端部は、右ケース部９３６内で駆動部に接続されている。 A rotating shaft protruding from the scraping roller 951 is attached to the left case portion 935 , and the base end of the rotating shaft is connected to the driving portion inside the left case portion 935 . A rotating shaft protruding from the scraping roller 952 is also attached to the right case portion 936 , and the base end of this rotating shaft is connected to the driving portion within the right case portion 936 .
　左側の掻取ローラ９５１は、吸込空間９４０内で、左ケース部９３５の近傍から右方に延び、掻取ローラ９５１の先端は、幅方向における吸込空間９４０の中央位置の近くに位置している。掻取ローラ９５１は、先端に向けて細くなるテーパ筒状のローラ本体９５３と、ローラ本体９５３の外周面上に設けられた複数のブラシ帯９５４と、を有している。 The left scraping roller 951 extends rightward from the vicinity of the left case portion 935 in the suction space 940, and the tip of the scraping roller 951 is positioned near the central position of the suction space 940 in the width direction. . The scraping roller 951 has a tapered tubular roller body 953 that tapers toward its tip, and a plurality of brush bands 954 provided on the outer peripheral surface of the roller body 953 .
　右側の掻取ローラ９５２は、左側の掻取ローラ９５１と左右対称の構造を有している。左右の掻取ローラ９５１，９５２の先端面９５５間には、空間９５６が形成されている。空間９５６は、連通部９４１に対して前側に位置している。 The scraping roller 952 on the right side has a symmetrical structure with the scraping roller 951 on the left side. A space 956 is formed between the tip surfaces 955 of the left and right scraping rollers 951 and 952 . The space 956 is located on the front side with respect to the communicating portion 941 .
　掃除機本体９１０の吸引源が吸引力を発生させている間、掻取ローラ９５１，９５２は、駆動部の駆動力によって、吸込空間９４０内で回転する。このとき、掻取ローラ９５１，９５２のブラシ帯９５４は、床面上の塵埃を掻き取る。掻き取られた塵埃は、吸込空間９４０内で吸い上げられて、連通部９４１の連結管部９４３に連結された塵埃管路９２０を通じて掃除機本体９１０内に流入する。 While the suction source of the cleaner main body 910 is generating suction force, the scraping rollers 951 and 952 are rotated within the suction space 940 by the driving force of the drive section. At this time, the brush bands 954 of the scraping rollers 951 and 952 scrape dust on the floor surface. The scraped dust is sucked up in the suction space 940 and flows into the main body 910 of the cleaner through the dust pipe 920 connected to the connecting pipe portion 943 of the communicating portion 941 .
　掻取ローラ９５１，９５２には、毛髪といった長い塵埃が巻き付くことがあるが、掻取ローラ９５１，９５２のローラ本体９５３は、先端面９５５に向けて細くなるテーパ形状を有しているので、長い塵埃は、先端面９５５に向けて送り出される。先端面９５５に向けて送り出された塵埃は、掻取ローラ９５１，９５２の先端面９５５間の空間９５６を通じて掻取ローラ９５１，９５２から離脱する。その後、当該塵埃は、連通部９４１及び塵埃管路９２０を通じて掃除機本体９１０内に流入する。 Long dust such as hair may wind around the scraping rollers 951 and 952, but since the roller main body 953 of the scraping rollers 951 and 952 has a tapered shape that tapers toward the tip surface 955, Long dust particles are sent toward the tip surface 955 . The dust sent toward the tip surface 955 leaves the scraping rollers 951 and 952 through a space 956 between the tip surfaces 955 of the scraping rollers 951 and 952 . After that, the dust flows into the main body 910 of the cleaner through the communicating portion 941 and the dust pipe 920 .
　特許文献１の吸込ノズル９３０は、掻取ローラ９５１，９５２の先端面９５５間の空間９５６を通じて、これらの掻取ローラ９５１，９５２に巻き付いた塵埃を除去することを可能にしているが、当該空間９５６に塵埃が挟まった状態になることがある。この状態では、掻取ローラ９５１，９５２に巻き付いた塵埃の除去が促進されず、掻取ローラ９５１，９５２に巻き付いた塵埃の量が時間とともに増加し得る。 The suction nozzle 930 of Patent Document 1 makes it possible to remove dust wrapped around the scraping rollers 951 and 952 through a space 956 between the tip surfaces 955 of the scraping rollers 951 and 952. 956 may become stuck with dust. In this state, removal of dust wound around the scraping rollers 951 and 952 is not facilitated, and the amount of dust wound around the scraping rollers 951 and 952 may increase over time.
特開２０２１－２３７０９号公報Japanese Patent Application Laid-Open No. 2021-23709
　本開示は、掻取ローラに巻き付いた塵埃の除去を更に促すように改善された吸込ノズル及び吸込ノズルを備えた掃除機を提供することを目的とする。 An object of the present disclosure is to provide a suction nozzle improved to further facilitate removal of dust wrapped around the scraping roller, and a cleaner provided with the suction nozzle.
　本開示における吸込ノズルは、掃除機本体の吸引源が発生する吸引力により塵埃を吸引する塵埃管路に接続可能に構成されている。吸込ノズルは、塵埃を吸い込むための吸込空間を区画しているノズルケースと、吸込空間に開口した流路をノズルケースに形成するとともに塵埃管路に接続可能に構成された連通部と、駆動力を発生させる駆動部と、左右方向に間隔を空けて対向配置された先端を有しているとともに、駆動部の駆動力によって吸込空間内で回転しながら塵埃を掻き取りつつ、巻き付いた塵埃を先端に向けて送り出すように構成された一対の掻取ローラと、を備えている。一対の掻取ローラの先端は、一対の掻取ローラの軸に対して傾斜した傾斜面を含み、一対の掻取ローラが駆動部により回転しているときに、傾斜面間の空間の幅が流路の開口側において広く、開口とは反対側において狭くなった状態になることを許容する。 The suction nozzle according to the present disclosure is configured to be connectable to a dust conduit that sucks dust by the suction force generated by the suction source of the cleaner body. The suction nozzle includes a nozzle case that defines a suction space for sucking dust, a communication portion that forms a flow path that opens into the suction space in the nozzle case and is configured to be connectable to the dust pipe, and a driving force. and a tip that is opposed to the tip with a gap in the left-right direction. and a pair of scraping rollers configured to feed toward. The ends of the pair of scraping rollers include inclined surfaces that are inclined with respect to the axes of the pair of scraping rollers, and when the pair of scraping rollers are rotated by the drive unit, the width of the space between the inclined surfaces is It allows the channel to be wide on the opening side and narrow on the opposite side of the opening.
　本開示における掃除機は、上述の吸込ノズルと、塵埃を吸引する吸引力を発生する吸引源を内蔵した掃除機本体と、掃除機本体から延設されて、吸引源の吸引力により吸い込まれた塵埃が流れる塵埃管路と、を備えている。塵埃管路は、吸込ノズルに接続される。 A vacuum cleaner according to the present disclosure includes a vacuum cleaner main body that incorporates the above-described suction nozzle and a suction source that generates a suction force for sucking dust, and an extension from the cleaner main body that is sucked by the suction force of the suction source. and a dust pipe through which dust flows. A dirt line is connected to the suction nozzle.
　上述の吸込ノズル及び掃除機は、一対の掻取ローラの先端の傾斜面間の空間に挟まった塵埃の除去が促されるように構成されているので、掻取ローラの先端に向かう塵埃の移送が促進される。 Since the suction nozzle and the vacuum cleaner described above are configured to promote the removal of dust caught in the space between the inclined surfaces at the tips of the pair of scraping rollers, the transfer of dust toward the tips of the scraping rollers is facilitated. Promoted.
　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 objects, features and advantages of the present invention will become more apparent with the following detailed description and accompanying drawings.
掃除機の概略的な側面図Schematic side view of vacuum cleaner 掃除機の吸込ノズルの斜視図Perspective view of vacuum cleaner suction nozzle 吸込ノズルの分解斜視図Disassembled perspective view of suction nozzle 吸込ノズルの斜視図Perspective view of suction nozzle 吸込ノズルの掻取ローラの分解図Exploded view of scraping roller of suction nozzle 吸込ノズルの底面図Bottom view of suction nozzle 吸込ノズルの内部構造を表す図Diagram showing the internal structure of the suction nozzle 掻取ローラに巻き付いた塵埃に作用する力を表す図Diagram showing forces acting on dust wrapped around the scraping roller 一対の掻取ローラ間の空間の形状を表す図A diagram showing the shape of the space between a pair of scraping rollers. 一対の掻取ローラ間の空間の形状を表す図A diagram showing the shape of the space between a pair of scraping rollers. 一対の掻取ローラ間の空間の形状を表す図A diagram showing the shape of the space between a pair of scraping rollers. 一対の掻取ローラ間の空間の形状を表す図A diagram showing the shape of the space between a pair of scraping rollers. 一対の掻取ローラ間の空間の形状を表す図A diagram showing the shape of the space between a pair of scraping rollers. 一対の掻取ローラ間の空間の形状を表す図A diagram showing the shape of the space between a pair of scraping rollers. 従来の掃除機の概略的な側面図Schematic side view of a conventional vacuum cleaner 従来の掃除機の吸込ノズルの斜視図Perspective view of a suction nozzle of a conventional vacuum cleaner
　以下、図面を参照しながら、実施形態を詳細に説明するが、当業者の理解を容易にするために、例えば、既によく知られた事項の詳細説明、又は、実質的に同一の構成に対する重複説明を省略する場合がある。なお、添付図面及び以下の説明は、当業者が本開示を十分に理解するために提供されるのであって、これらにより特許請求の範囲に記載の主題を限定することを意図していない。 Hereinafter, embodiments will be described in detail with reference to the drawings. Description may be omitted. It should be noted that the accompanying drawings and the following description are provided to allow those skilled in the art to fully understand the present disclosure and are not intended to limit the claimed subject matter thereby.
　（掃除機の構造）
　掃除機１０１は、図１に示すように、掃除機本体１１０と、掃除機本体１１０から延設された塵埃管路１０３と、塵埃管路１０３の先端に取り付けられた吸込ノズル１００と、を備えている。掃除機本体１１０は、塵埃を吸引する吸引力を発生する吸引源１０２を内蔵しており、吸引源１０２の吸引力は、塵埃管路１０３を通じて、吸込ノズル１００に作用する。吸引源１０２の吸引力により吸い込まれた塵埃は、塵埃管路１０３を流れる。 (Vacuum cleaner structure)
As shown in FIG. 1, the cleaner 101 includes a cleaner main body 110, a dust conduit 103 extending from the cleaner main body 110, and a suction nozzle 100 attached to the tip of the dust conduit 103. ing. The vacuum cleaner main body 110 incorporates a suction source 102 that generates a suction force for sucking dust. Dust sucked by the suction force of the suction source 102 flows through the dust pipe 103 .
　塵埃管路１０３は、掃除機本体１１０に接続された可撓性のホース１０５と、吸込ノズル１００に接続された先端管１０６と、ホース１０５と先端管１０６とに接続可能に構成された把持管１０７と、を含んでいる。把持管１０７は、ホース１０５の先端及び先端管１０６の基端に接続可能に形成された管部分１０８と、管部分１０８から分岐して、使用者によって把持可能に形成された棒状の把持部１０９と、を含んでいる。把持部１０９には、掃除機本体１１０及び吸込ノズル１００を作動させるために操作される操作部１０４が設けられている。 The dust conduit 103 includes a flexible hose 105 connected to the cleaner main body 110, a tip tube 106 connected to the suction nozzle 100, and a grip tube connectable to the hose 105 and the tip tube 106. 107 and . The gripping tube 107 includes a tube portion 108 formed to be connectable to the distal end of the hose 105 and the proximal end of the distal tube 106, and a rod-shaped gripping portion 109 branched from the tube portion 108 and formed to be grippable by the user. and includes The grip portion 109 is provided with an operation portion 104 that is operated to operate the cleaner main body 110 and the suction nozzle 100 .
　（吸込ノズルの構造）
　塵埃管路１０３によって形成される流路よりも左右方向に幅広の吸込領域を得るために、吸込ノズル１００が塵埃管路１０３の先端管１０６に取り付けられている。吸込ノズル１００は、図２に示すように、左右方向に幅広のノズルケース１２０と、ノズルケース１２０から後方に延設された連結管１３１を有している連通部１３０と、を備えている。連通部１３０の連結管１３１は、塵埃管路１０３に接続可能に構成されている。 (Suction nozzle structure)
A suction nozzle 100 is attached to the tip tube 106 of the dust conduit 103 in order to obtain a suction area that is laterally wider than the flow path formed by the dust conduit 103 . As shown in FIG. 2 , the suction nozzle 100 includes a nozzle case 120 that is wide in the left-right direction, and a communicating portion 130 that has a connecting pipe 131 extending rearward from the nozzle case 120 . A connecting pipe 131 of the communicating portion 130 is configured to be connectable to the dust conduit 103 .
　ノズルケース１２０は、図３に示すように、前方に開口した略Ｃ字形状のケース本体１２１と、ケース本体１２１に上側から取り付けられるカバー部材１２２と、を含んでいる。ケース本体１２１は、左右方向に長い中央ケース部１２３と、中央ケース部１２３の左端から前方に突出するように設けられた左ケース部１２４と、中央ケース部１２３の右端から前方に突出するように設けられた右ケース部１２５と、を含んでいる。カバー部材１２２は、中央ケース部１２３、左ケース部１２４及び右ケース部１２５によって囲まれた空間の上側及び前側を塞ぐように形成されている。カバー部材１２２、中央ケース部１２３、左ケース部１２４及び右ケース部１２５によって区画された空間を、以下の説明において、「吸込空間１２６」と称する。吸込空間１２６は、下方に開口しており、床面上の塵埃は、吸込空間１２６を通じて、掃除機本体１１０へ吸い込まれる。 As shown in FIG. 3, the nozzle case 120 includes a substantially C-shaped case body 121 that opens forward, and a cover member 122 attached to the case body 121 from above. The case main body 121 includes a central case portion 123 elongated in the left-right direction, a left case portion 124 provided to protrude forward from the left end of the central case portion 123, and a right end of the central case portion 123 to protrude forward. and a right case portion 125 provided. The cover member 122 is formed so as to close the upper and front sides of the space surrounded by the central case portion 123 , the left case portion 124 and the right case portion 125 . A space defined by the cover member 122, the central case portion 123, the left case portion 124, and the right case portion 125 is referred to as a "suction space 126" in the following description. The suction space 126 is open downward, and dust on the floor surface is sucked into the cleaner main body 110 through the suction space 126 .
　中央ケース部１２３の前壁１２７は、図４に示すように、吸込空間１２６の後端を区画しており、左右方向における前壁１２７の中央位置には、連通部１３０の開口１２８が形成されている。連通部１３０は、中央ケース部１２３において、開口１２８から後方に延びて連結管１３１に繋がる流路１３２を形成し、吸込空間１２６を塵埃管路１０３の内部空間と連通した状態にしている。連通部１３０は、吸込空間１２６の後側で構成されており、掃除機本体１１０の吸引源１０２が作動すると、吸引源１０２の吸引力により、吸込空間１２６内では連通部１３０に向けて後方に流れる吸込気流が発生する。 The front wall 127 of the central case portion 123 defines the rear end of the suction space 126, as shown in FIG. ing. The communicating portion 130 extends rearward from the opening 128 in the central case portion 123 to form a flow path 132 connected to the connecting pipe 131 , so that the suction space 126 communicates with the internal space of the dust pipe 103 . The communication part 130 is configured on the rear side of the suction space 126 , and when the suction source 102 of the cleaner body 110 is operated, the suction force of the suction source 102 moves backward toward the communication part 130 in the suction space 126 . A flowing suction airflow is generated.
　吸込空間１２６内には、左右方向に長い一対の掻取ローラ１４１，１４２が、左右方向において間隔を空けて配置されている。これらの掻取ローラ１４１，１４２を軸支するために、左ケース部１２４及び右ケース部１２５において吸込空間１２６に臨む壁部には軸受部が設けられている。 In the suction space 126, a pair of scraping rollers 141 and 142 that are long in the left-right direction are arranged with a gap in the left-right direction. In order to pivotally support these scraping rollers 141 and 142, bearings are provided on the walls facing the suction space 126 in the left case 124 and the right case 125. As shown in FIG.
　左側の掻取ローラ１４１は、右側の掻取ローラ１４２と左右対称の構造を有している。したがって、左側の掻取ローラ１４１のみについて、以下に説明する。 The scraping roller 141 on the left side has a structure symmetrical to the scraping roller 142 on the right side. Therefore, only the left scraping roller 141 will be described below.
　掻取ローラ１４１は、図３に示すように、ローラ本体１４３と、ローラ本体１４３の外周面に取り付けられる複数のブラシ帯１４４と、を有している。また、掻取ローラ１４１は、図５に示すように、ローラ本体１４３の先端に取り付けられて掻取ローラ１４１の先端を形成する先端部材１４５を有している。 The scraping roller 141 has a roller body 143 and a plurality of brush bands 144 attached to the outer peripheral surface of the roller body 143, as shown in FIG. The scraping roller 141 also has a tip member 145 attached to the tip of the roller body 143 to form the tip of the scraping roller 141, as shown in FIG.
　ローラ本体１４３は、左右方向における吸込空間１２６の長さの半分よりも短い軸長を有している。ローラ本体１４３の基端からは、回転シャフト１５３が突出しており、回転シャフト１５３は、左ケース部１２４の壁部に設けられた上述の軸受部に嵌入される。この結果、掻取ローラ１４１は、基端側でノズルケース１２０により片持ち支持される。 The roller body 143 has an axial length shorter than half the length of the suction space 126 in the left-right direction. A rotary shaft 153 protrudes from the base end of the roller body 143 , and the rotary shaft 153 is fitted into the bearing portion provided on the wall portion of the left case portion 124 . As a result, the scraping roller 141 is cantilevered by the nozzle case 120 on the base end side.
　ローラ本体１４３は、基端から先端に向けて細くなるテーパ形状を有している。ローラ本体１４３の先端面には、先端部材１４５を取り付けるための取付穴部１４６が穿設されている。 The roller body 143 has a tapered shape that tapers from the base end to the tip end. A mounting hole 146 for mounting the tip member 145 is formed in the tip surface of the roller body 143 .
　ローラ本体１４３の外周面には、複数の螺旋溝１４７が形成されている。これらの螺旋溝１４７は、ローラ本体１４３の周方向において間隔を空けて形成されている。これらの螺旋溝１４７には、ブラシ帯１４４が取り付けられる。ローラ本体１４３及びブラシ帯１４４は、掻取ローラ１４１の外周部を構成している。螺旋溝１４７の螺旋形状は、図４の矢印の方向に掻取ローラ１４１が回転したときに、螺旋溝１４７に取り付けられたブラシ帯１４４に接触した塵埃が掻取ローラ１４１の先端側へ送り出されるように設定されている。 A plurality of spiral grooves 147 are formed on the outer peripheral surface of the roller body 143 . These spiral grooves 147 are formed at intervals in the circumferential direction of the roller body 143 . Attached to these spiral grooves 147 are brush strips 144 . The roller main body 143 and the brush band 144 constitute the outer peripheral portion of the scraping roller 141 . The helical shape of the helical groove 147 is such that when the scraping roller 141 rotates in the direction of the arrow in FIG. is set to
　ブラシ帯１４４は、螺旋溝１４７に取り付けられたときにローラ本体１４３の外周面から突出し、掻取ローラ１４２が回転すると床面に擦れる。ブラシ帯１４４は、床面に擦れたときに床面を傷つけない程度の柔らかさを有している。なお、ローラ本体１４３の外周面からのブラシ帯１４４の突出量は、ローラ本体１４３の全長に亘って略一定になっている。 The brush band 144 protrudes from the outer peripheral surface of the roller body 143 when attached to the spiral groove 147, and rubs against the floor surface when the scraping roller 142 rotates. The brush band 144 is soft enough not to damage the floor surface when rubbed against it. The amount of protrusion of the brush band 144 from the outer peripheral surface of the roller body 143 is substantially constant over the entire length of the roller body 143 .
　先端部材１４５は、ローラ本体１４３の取付穴部１４６と相補的な形状を有している嵌入部１４８と、嵌入部１４８よりも大きな径の先端片１５１と、を含んでいる。嵌入部１４８が取付穴部１４６に嵌入されると、先端部材１４５は、ローラ本体１４３の先端に固定される。先端片１５１において嵌入部１４８と反対側の面は、掻取ローラ１４１の先端を形成しており、掻取ローラ１４１の軸に対して傾斜した（すなわち、掻取ローラ１４１の軸に対して直交していない）傾斜面１４９になっている。 The tip member 145 includes a fitting portion 148 having a shape complementary to the mounting hole portion 146 of the roller body 143 and a tip piece 151 having a larger diameter than the fitting portion 148 . When the fitting portion 148 is fitted into the mounting hole portion 146 , the tip member 145 is fixed to the tip of the roller body 143 . The surface of the tip piece 151 opposite to the insertion portion 148 forms the tip of the scraping roller 141 and is inclined with respect to the axis of the scraping roller 141 (that is, perpendicular to the axis of the scraping roller 141). not).
　掻取ローラ１４１の前側の空間は、図４に示すように、後側の空間よりも連通部１３０の開口１２８から離れており、掃除機本体１１０の吸引源１０２の吸引力が作用しにくい。掻取ローラ１４１の前側の空間が広ければ広いほど、前側の空間に作用する吸引力が小さくなるので、掻取ローラ１４１の前側の空間は、狭くなっていることが好ましい。本実施形態では、ローラ本体１４３がテーパ形状を有しているので、掻取ローラ１４１は、掻取ローラ１４１の外周部がノズルケース１２０の前側部分（すなわち、カバー部材１２２の内面）に沿うように傾斜した姿勢で保持されている。すなわち、掻取ローラ１４１は、図６に示すように、掻取ローラ１４１の前側においてローラ本体１４３の長手方向に沿って一様な空間幅が得られるように、掻取ローラ１４１の基端から先端に向けて前方に傾斜した姿勢で、左ケース部１２４に取り付けられている。また、ブラシ帯１４４がローラ本体１４３の長手方向に亘って一様に床面に接触するように、掻取ローラ１４１は、ローラ本体１４３のテーパ形状に合わせて下方に傾斜した姿勢で保持されている。 The space on the front side of the scraping roller 141 is, as shown in FIG. The wider the space in front of the scraping roller 141, the smaller the suction force acting on the front space. Therefore, the space in front of the scraping roller 141 is preferably narrow. In this embodiment, since the roller main body 143 has a tapered shape, the scraping roller 141 is arranged so that the outer peripheral portion of the scraping roller 141 is along the front side portion of the nozzle case 120 (that is, the inner surface of the cover member 122). is held in a tilted position. That is, as shown in FIG. 6, the scraping roller 141 is arranged from the proximal end of the scraping roller 141 so that a uniform space width can be obtained along the longitudinal direction of the roller main body 143 on the front side of the scraping roller 141 . It is attached to the left case part 124 in a posture inclined forward toward the tip. In addition, the scraping roller 141 is held in a posture inclined downward according to the tapered shape of the roller body 143 so that the brush band 144 uniformly contacts the floor surface along the longitudinal direction of the roller body 143 . there is
　掻取ローラ１４１，１４２の先端の傾斜面１４９は、左右方向に間隔を空けて互いに対向している。これらの傾斜面１４９の間には、空間１５２が形成されている。空間１５２は、連通部１３０の開口１２８の前側に形成されている。当該空間１５２は、掻取ローラ１４１に巻き付いた塵埃を除去するために利用される。 The inclined surfaces 149 at the tips of the scraping rollers 141 and 142 face each other with a gap in the left-right direction. A space 152 is formed between these inclined surfaces 149 . The space 152 is formed in front of the opening 128 of the communicating portion 130 . The space 152 is used to remove dust wrapped around the scraping roller 141 .
　掻取ローラ１４１，１４２を駆動するために、図７に示すように、ケース本体１２１内には、駆動部１６０が設けられている。駆動部１６０は、ケース本体１２１の内部空間において左側部分に設けられた駆動機構１６１と、右側部分に設けられた駆動機構１６２と、を含んでいる。駆動機構１６１は、左側の掻取ローラ１４１を駆動するために設けられており、駆動機構１６２は、右側の掻取ローラ１４２を駆動するために設けられている。すなわち、駆動部１６０は、駆動機構１６１，１６２を用いて、一対の掻取ローラ１４１，１４２を個別に回転駆動するように構成されている。左側の駆動機構１６１は、右側の駆動機構１６２と左右対称の構造を有しているので、左側の駆動機構１６１についてのみ説明する。 In order to drive the scraping rollers 141 and 142, a drive unit 160 is provided inside the case body 121, as shown in FIG. The drive unit 160 includes a drive mechanism 161 provided on the left side of the internal space of the case body 121 and a drive mechanism 162 provided on the right side. A drive mechanism 161 is provided to drive the scraping roller 141 on the left side, and a drive mechanism 162 is provided to drive the scraping roller 142 on the right side. That is, the driving section 160 is configured to rotate the pair of scraping rollers 141 and 142 individually using the driving mechanisms 161 and 162 . Since the left drive mechanism 161 has a symmetrical structure with the right drive mechanism 162, only the left drive mechanism 161 will be described.
　駆動機構１６１は、掻取ローラ１４１を回転させる駆動力を発生するモータ１６３と、駆動力を回転シャフト１５３に伝達する駆動ベルト１６９と、を含んでいる。モータ１６３は、中央ケース部１２３内に配置されたモータ本体１６４と、モータ本体１６４から左ケース部１２４に向けて突出したモータシャフト１６５と、を含んでいる。モータシャフト１６５と掻取ローラ１４１に設けられた回転シャフト１５３とには、プーリが取り付けられており、これらのプーリに駆動ベルト１６９が左ケース部１２４内において掛け回されている。 The driving mechanism 161 includes a motor 163 that generates driving force for rotating the scraping roller 141 and a driving belt 169 that transmits the driving force to the rotating shaft 153 . The motor 163 includes a motor body 164 arranged within the central case portion 123 and a motor shaft 165 protruding from the motor body 164 toward the left case portion 124 . Pulleys are attached to the motor shaft 165 and the rotary shaft 153 provided on the scraping roller 141 , and a driving belt 169 is wound around these pulleys inside the left case portion 124 .
　モータ本体１６４の下側には、制御基板１６８が配置されており、制御基板１６８は、モータ１６３と、把持管１０７に設けられた操作部１０４と、に電気的に接続されている。制御基板１６８は、操作部１０４に対する操作に応じて、モータ１６３を作動させたり、停止させたりするように構成されている。 A control board 168 is arranged below the motor main body 164 , and the control board 168 is electrically connected to the motor 163 and the operation section 104 provided on the grip tube 107 . The control board 168 is configured to operate or stop the motor 163 according to the operation on the operation unit 104 .
　駆動機構１６１，１６２のモータ１６３によって、掻取ローラ１４１，１４２は、個別に駆動される。モータ１６３は、掻取ローラ１４１，１４２にかかる負荷が増大すれば、モータシャフト１６５の回転速度を下げるように構成されている。したがって、掻取ローラ１４１にかかる負荷が掻取ローラ１４２にかかる負荷よりも高くなれば、掻取ローラ１４１の回転速度は、掻取ローラ１４２の回転速度よりも低くなる。 The scraping rollers 141 and 142 are individually driven by the motors 163 of the drive mechanisms 161 and 162. The motor 163 is configured to reduce the rotational speed of the motor shaft 165 as the load applied to the scraping rollers 141 and 142 increases. Therefore, if the load on the scraping roller 141 is higher than the load on the scraping roller 142 , the rotational speed of the scraping roller 141 will be lower than the rotational speed of the scraping roller 142 .
　（掃除機の動作）
　使用者が操作部１０４を操作すると、掃除機本体１１０に内蔵された吸引源１０２及び吸込ノズル１００に設けられたモータ１６３が作動する。吸引源１０２が作動すると、吸引源１０２の吸引力は、塵埃管路１０３及び連通部１３０を通じて、吸込空間１２６に作用する。この結果、床面上の塵埃は、吸込空間１２６、連通部１３０及び塵埃管路１０３を通じて、掃除機本体１１０に流入する。 (Vacuum cleaner action)
When the user operates the operation unit 104, the suction source 102 built in the cleaner main body 110 and the motor 163 provided in the suction nozzle 100 are operated. When the suction source 102 operates, the suction force of the suction source 102 acts on the suction space 126 through the dust pipe 103 and the communicating portion 130 . As a result, the dust on the floor flows into the cleaner main body 110 through the suction space 126 , the communicating portion 130 and the dust pipe 103 .
　塵埃が上述の如く吸い込まれている間、吸込空間１２６内では、掻取ローラ１４１，１４２は、モータ１６３の駆動力によって、吸込空間１２６内で回転駆動されている。掻取ローラ１４１，１４２が回転することにより、ブラシ帯１４４が床面に擦れる。この結果、床面に付着した塵埃は、ブラシ帯１４４によって掻き取られる。 While the dust is being sucked as described above, the scraping rollers 141 and 142 are rotationally driven within the suction space 126 by the driving force of the motor 163 . As the scraping rollers 141 and 142 rotate, the brush band 144 rubs against the floor surface. As a result, dust adhering to the floor surface is scraped off by the brush band 144 .
　掻取ローラ１４１，１４２が床面上の塵埃を掻き取っているとき、図８に示すように、長い塵埃（たとえば、毛髪）が掻取ローラ１４１，１４２に巻き付くことがある。掻取ローラ１４１，１４２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１４１，１４２の先端側に向きやすい。したがって、掻取ローラ１４１，１４２に巻き付いた長い塵埃を掻取ローラ１４１，１４２の先端に向けて移動させることができる。 When the scraping rollers 141 and 142 are scraping dust on the floor surface, long dust (for example, hair) may wind around the scraping rollers 141 and 142 as shown in FIG. Since the scraping rollers 141 and 142 have a tapered shape that tapers toward the tip, the component force of the long dust winding force tends to be directed toward the tip side of the scraping rollers 141 and 142 . Therefore, the long dust wound around the scraping rollers 141 and 142 can be moved toward the tips of the scraping rollers 141 and 142 .
　掻取ローラ１４１，１４２の先端に向けて移動した塵埃は、掻取ローラ１４１，１４２の傾斜面１４９間の空間１５２を通じて、これらの掻取ローラ１４１，１４２から離脱し得る。掻取ローラ１４１，１４２から離脱した塵埃は、吸引源１０２の吸引力により、空間１５２の後方の連通部１３０に吸い込まれる。 Dust that has moved toward the tips of the scraping rollers 141 and 142 can leave the scraping rollers 141 and 142 through the space 152 between the inclined surfaces 149 of the scraping rollers 141 and 142 . The dust separated from the scraping rollers 141 and 142 is sucked into the communicating portion 130 behind the space 152 by the suction force of the suction source 102 .
　掻取ローラ１４１，１４２に巻き付いた塵埃は、上述の如く、空間１５２を通じて、これらの掻取ローラ１４１，１４２から除去可能であるが、空間１５２において塵埃が挟まった状態が生じ得る。空間１５２に塵埃が挟まった状態になると、掻取ローラ１４１，１４２の先端方向への塵埃の移送が滞り、掻取ローラ１４１，１４２に巻き付いた状態になっている塵埃の量が増える。このような状態では、掻取ローラ１４１，１４２にかかる負荷が高くなったり、掻取ローラ１４１，１４２の掻取能力が低下したりする。このため、空間１５２に挟まった塵埃の除去を促すように、掻取ローラ１４１，１４２の傾斜面１４９は、掻取ローラ１４１，１４２の軸に対して傾斜している。 Although the dust wrapped around the scraping rollers 141 and 142 can be removed from these scraping rollers 141 and 142 through the space 152 as described above, a state in which the dust is caught in the space 152 can occur. When dust is caught in the space 152, the transfer of the dust toward the leading ends of the scraping rollers 141 and 142 is delayed, and the amount of dust wrapped around the scraping rollers 141 and 142 increases. In such a state, the load applied to the scraping rollers 141 and 142 increases, or the scraping ability of the scraping rollers 141 and 142 decreases. Therefore, the inclined surfaces 149 of the scraping rollers 141 and 142 are inclined with respect to the axes of the scraping rollers 141 and 142 so as to promote the removal of dust caught in the space 152 .
　掻取ローラ１４１，１４２の軸に対して傾斜した傾斜面１４９が掻取ローラ１４１，１４２の先端に設けられることにより、空間１５２には、空間１５２の幅が大きくなっている幅広部分と、空間１５２の幅が狭くなっている幅狭部分と、ができる。連通部１３０の開口１２８に対する幅広部分及び幅狭部分の相対的な位置は、掻取ローラ１４１，１４２の回転により変化する。 By providing inclined surfaces 149 inclined with respect to the axes of the scraping rollers 141 and 142 at the tips of the scraping rollers 141 and 142, the space 152 has a wide portion where the width of the space 152 is large and a space There is a narrow portion where the width of 152 is narrowed. The relative positions of the wide portion and the narrow portion of the communicating portion 130 with respect to the opening 128 change as the scraping rollers 141 and 142 rotate.
　たとえば、掻取ローラ１４１，１４２が、図９に示す回転位置にあるとき、傾斜面１４９間の空間１５２の幅は、連通部１３０の開口１２８側において狭く、開口１２８とは反対側において広くなる。すなわち、傾斜面１４９間の空間１５２の幅は、後方（すなわち、吸込空間１２６内の吸込気流の方向）に向けて狭くなる。この場合、空間１５２に挟まった塵埃は、吸引源１０２の吸引力により後方に吸われても、傾斜面１４９に引っ掛かり、空間１５２から離脱しにくい。 For example, when the scraping rollers 141 and 142 are in the rotational position shown in FIG. 9, the width of the space 152 between the inclined surfaces 149 is narrow on the opening 128 side of the communicating portion 130 and wide on the side opposite to the opening 128. . That is, the width of the space 152 between the inclined surfaces 149 narrows rearward (that is, in the direction of the intake airflow in the intake space 126). In this case, even if the dust caught in the space 152 is sucked backward by the suction force of the suction source 102 , it is caught on the inclined surface 149 and is difficult to leave the space 152 .
　掻取ローラ１４１，１４２が、図９に示す回転位置から１８０°だけ回転すれば、図１０に示す状態になる。この状態では、空間１５２の幅は、連通部１３０の開口１２８側において広く、開口１２８とは反対側において狭くなる。すなわち、空間１５２の幅は、後方（すなわち、吸込空間１２６内の吸込気流の方向）に向けて拡がる。このため、塵埃が吸引源１０２の吸引力を受けると、傾斜面１４９に引っ掛かることなく後方に離脱することができる。この結果、空間１５２に塵埃が挟まった状態は、短期間で解消され得、掻取ローラ１４１，１４２の先端方向への塵埃の移送が促進される。 When the scraping rollers 141 and 142 are rotated by 180° from the rotational position shown in FIG. 9, the state shown in FIG. 10 is obtained. In this state, the width of the space 152 is wide on the opening 128 side of the communicating portion 130 and narrow on the side opposite to the opening 128 . That is, the width of the space 152 widens rearward (that is, in the direction of the intake airflow in the intake space 126). Therefore, when the dust receives the suction force of the suction source 102 , the dust can be removed backward without being caught on the inclined surface 149 . As a result, the state in which dust is caught in the space 152 can be eliminated in a short period of time, and the transfer of the dust toward the leading ends of the scraping rollers 141 and 142 is facilitated.
　掻取ローラ１４１，１４２の回転速度は、これらの掻取ローラ１４１，１４２にかかる負荷に応じて個別に変化し得る。したがって、掻取ローラ１４１，１４２の回転位相の関係は、これらの掻取ローラ１４１，１４２にかかる負荷によって変化し得る。たとえば、図９及び図１０では、掻取ローラ１４１，１４２の回転位相は、互いに一致した状態であるが、掻取ローラ１４１が掻取ローラ１４２よりも高い負荷を受ければ、掻取ローラ１４１の回転位相は、掻取ローラ１４２の回転位相から遅れ得る。 The rotational speeds of the scraping rollers 141 and 142 can be changed individually according to the load applied to these scraping rollers 141 and 142. Therefore, the rotational phase relationship of the scraping rollers 141 and 142 can change depending on the load applied to these scraping rollers 141 and 142 . For example, in FIGS. 9 and 10, the rotation phases of the scraping rollers 141 and 142 match each other. The rotational phase can lag the rotational phase of the scraping roller 142 .
　たとえば、掻取ローラ１４１の回転位相が、図９に示す状態から、掻取ローラ１４２の回転位相に対して９０°だけずれた状態を図１１に示す。図９に示す状態では、掻取ローラ１４１の傾斜面１４９において最も先端側にある点Ｐは、掻取ローラ１４２の傾斜面１４９において最も先端側にある点Ｑと左右方向において対向する位置にあり、点Ｐ－Ｑ間において、空間１５２の幅は最も狭くなっている。掻取ローラ１４１，１４２の回転位相の相対的関係が図９に示す状態から図１１に示す状態に変わると、点Ｐ又は点Ｑに対応する位置における空間１５２間の幅は、図９に示す点Ｐ－Ｑ間の幅よりも大きくなる。この結果、空間１５２からの塵埃の除去が促される。 For example, FIG. 11 shows a state in which the rotational phase of the scraping roller 141 is shifted by 90° with respect to the rotational phase of the scraping roller 142 from the state shown in FIG. In the state shown in FIG. 9, the point P on the inclined surface 149 of the scraping roller 141, which is the most distal, is positioned to face the point Q, which is the most distal on the inclined surface 149 of the scraping roller 142, in the left-right direction. , point PQ, the width of the space 152 is the narrowest. When the relative relationship between the rotation phases of the scraping rollers 141 and 142 changes from the state shown in FIG. 9 to the state shown in FIG. It is larger than the width between points PQ. As a result, removal of dust from the space 152 is facilitated.
　上述の実施形態では、掻取ローラ１４１，１４２の先端面の全体が傾斜面１４９により構成されている。代替的に、図１２に示すように、掻取ローラ１４１，１４２の先端面の一部が傾斜面１４９により構成されていてもよい。この場合、先端面において傾斜面１４９以外の部分は、掻取ローラ１４１，１４２の軸に対して直角な面１７１になっていてもよい。この面１７１間に挟まった塵埃は、傾斜面１４９間に挟まった塵埃よりも除去されにくいが、掻取ローラ１４１，１４２間の回転位相の相対的関係が変化することにより除去可能である。 In the above-described embodiment, the tip surfaces of the scraping rollers 141 and 142 are entirely composed of the inclined surface 149 . Alternatively, as shown in FIG. 12, part of the tip surfaces of the scraping rollers 141 and 142 may be formed by inclined surfaces 149 . In this case, the portion of the tip surface other than the inclined surface 149 may be a surface 171 perpendicular to the axes of the scraping rollers 141 and 142 . The dust caught between the surfaces 171 is more difficult to remove than the dust caught between the inclined surfaces 149 , but can be removed by changing the relative rotation phase between the scraping rollers 141 and 142 .
　上述の実施形態では、傾斜面１４９を構成する先端部材１４５の先端片１５１は、板状であり、傾斜面１４９は平坦である。代替的に、図１３に示すように、先端片１５１は、錘状に形成されていてもよい。この場合、傾斜面１４９は、先端片１５１の周面により形成される。 In the above-described embodiment, the tip piece 151 of the tip member 145 forming the inclined surface 149 is plate-shaped, and the inclined surface 149 is flat. Alternatively, as shown in FIG. 13, tip piece 151 may be conical. In this case, the inclined surface 149 is formed by the peripheral surface of the tip piece 151 .
　図１３に示す錘状の先端片１５１の頂部は、掻取ローラ１４１，１４２の軸上に形成されているが、好ましくは、図１４に示すように、先端片１５１の頂部は、掻取ローラ１４１，１４２の軸に対して偏心した位置に設けられる。先端片１５１の頂部が掻取ローラ１４１，１４２の軸上に形成されている場合、掻取ローラ１４１，１４２の先端片１５１の頂部間の位置関係は、掻取ローラ１４１，１４２の回転位相によらず一定である。これに対して、先端片１５１の頂部が掻取ローラ１４１，１４２の軸から偏心していれば、掻取ローラ１４１，１４２の先端片１５１の頂部間の位置関係は、掻取ローラ１４１，１４２の回転位相の相対的変化により変わる。したがって、空間１５２において最も狭くなっている部分の位置は、掻取ローラ１４１，１４２の回転位相の相対的関係の変化により変わる。この結果、掻取ローラ１４１，１４２の回転位相の相対的関係の変化前において最も狭くなっていた空間１５２の部分は、掻取ローラ１４１，１４２の回転位相の相対的関係の変化後に広くなり、当該部分に挟まっていた塵埃の除去が促される。 13 is formed on the axes of the scraping rollers 141 and 142. Preferably, as shown in FIG. It is provided at a position eccentric to the axis of 141,142. When the tops of the tip pieces 151 are formed on the axes of the scraping rollers 141 and 142, the positional relationship between the tops of the tip pieces 151 of the scraping rollers 141 and 142 is the rotational phase of the scraping rollers 141 and 142. is constant regardless of On the other hand, if the tops of the tip pieces 151 are eccentric from the axes of the scraping rollers 141 and 142, the positional relationship between the tops of the tip pieces 151 of the scraping rollers 141 and 142 is Varies with relative changes in rotational phase. Therefore, the position of the narrowest portion in the space 152 changes with changes in the relative rotational phases of the scraping rollers 141 and 142 . As a result, the narrowest space 152 before the change in the relative rotational phases of the scraping rollers 141 and 142 widens after the change in the relative rotational phases of the scraping rollers 141 and 142. The removal of dust caught in the portion is promoted.
　上述の如く、先端片１５１の形状を変えることにより、空間１５２を様々な形状にすることができる。上述の実施形態では、先端片１５１を有している先端部材１４５は、ローラ本体１４３とは別体に形成されているので、先端部材１４５を設計変更することにより、ローラ本体１４３を設計変更することなく、空間１５２を所望の形状にすることができる。なお、空間１５２の形状を変更する必要がなければ、ローラ本体１４３及び先端部材１４５が１つの部材として一体化された構造が採用されてもよい。 As described above, by changing the shape of the tip piece 151, the space 152 can be made into various shapes. In the above-described embodiment, the tip member 145 having the tip piece 151 is formed separately from the roller main body 143. Therefore, by changing the design of the tip member 145, the design of the roller main body 143 can be changed. The space 152 can be formed into a desired shape without any need. If there is no need to change the shape of the space 152, a structure in which the roller main body 143 and the tip member 145 are integrated as one member may be adopted.
　上述の実施形態では、掻取ローラ１４１，１４２は、駆動機構１６１，１６２のモータ１６３によって個別に回転駆動されている。代替的に、掻取ローラ１４１，１４２は、共通のモータによって駆動されてもよい。この場合、掻取ローラ１４１，１４２の回転位相が互いに一致した状態（すなわち、図９又は図１０に示される状態）で、共通のモータに連結されてもよい。このような状態で掻取ローラ１４１，１４２が回転すれば、空間１５２の幅が後方に拡がった状態が周期的に得られる。 In the above-described embodiment, the scraping rollers 141 and 142 are individually rotationally driven by the motors 163 of the drive mechanisms 161 and 162. Alternatively, the scraping rollers 141, 142 may be driven by a common motor. In this case, the scraping rollers 141 and 142 may be connected to a common motor in a state in which the rotational phases of the scraping rollers 141 and 142 match each other (that is, the state shown in FIG. 9 or 10). If the scraping rollers 141 and 142 rotate in such a state, a state in which the width of the space 152 expands rearward is obtained periodically.
　上述の実施形態では、空間１５２及び連通部１３０の開口１２８は、前後方向に対向している。代替的に、吸引源１０２からの吸引力が空間１５２に挟まった塵埃を空間１５２から離脱させるように作用する限り、空間１５２が開口１２８に対して左側又は右側にずれた位置に形成されていてもよい。 In the above-described embodiment, the space 152 and the opening 128 of the communicating portion 130 face each other in the front-rear direction. Alternatively, the space 152 may be offset to the left or right with respect to the opening 128 as long as the suction force from the suction source 102 acts to move the dust trapped in the space 152 away from the space 152. good too.
　上述の実施形態では、吸込ノズル１００は、キャニスター型の掃除機１０１に用いられている。代替的に、吸込ノズル１００は、スティック型の掃除機又はハンディ型の掃除機に用いられてもよい。 In the above-described embodiment, the suction nozzle 100 is used in the canister-type vacuum cleaner 101. Alternatively, the suction nozzle 100 may be used with a stick vacuum cleaner or a handheld vacuum cleaner.
　（効果等）
　上述の実施形態に係る吸込ノズル１００は、以下の特徴を有しているとともに、以下の効果を奏する。 (effects, etc.)
The suction nozzle 100 according to the embodiment described above has the following features and the following effects.
　上述の実施形態に係る一の局面に係る吸込ノズルは、掃除機本体の吸引源が発生する吸引力により塵埃を吸引する塵埃管路に接続可能に構成されている。吸込ノズルは、吸込ノズルは、塵埃を吸い込むための吸込空間を区画しているノズルケースと、吸込空間に開口した流路をノズルケースに形成するとともに塵埃管路に接続可能に構成された連通部と、駆動力を発生させる駆動部と、左右方向に間隔を空けて対向配置された先端を有しているとともに、駆動部の駆動力によって吸込空間内で回転しながら塵埃を掻き取りつつ、巻き付いた塵埃を先端に向けて送り出すように構成された一対の掻取ローラと、を備えている。一対の掻取ローラの先端は、一対の掻取ローラの軸に対して傾斜した傾斜面を含み、一対の掻取ローラが駆動部により回転しているときに、傾斜面間の空間の幅が流路の開口側において広く、開口とは反対側において狭くなった状態になることを許容する。 The suction nozzle according to one aspect of the above-described embodiment is configured to be connectable to a dust conduit that sucks dust by the suction force generated by the suction source of the cleaner body. The suction nozzle includes a nozzle case defining a suction space for sucking dust, and a communicating portion formed in the nozzle case with a flow path opening to the suction space and connectable to the dust pipe. and a driving portion that generates a driving force, and a front end that is arranged opposite to the driving portion with a gap in the left-right direction. and a pair of scraping rollers configured to push the collected dust toward the tip. The ends of the pair of scraping rollers include inclined surfaces that are inclined with respect to the axes of the pair of scraping rollers, and when the pair of scraping rollers are rotated by the drive unit, the width of the space between the inclined surfaces is It allows the channel to be wide on the opening side and narrow on the opposite side of the opening.
　上述の構成では、駆動部が一対の掻取ローラを回転駆動すると、これらの掻取ローラは塵埃を掻き取る。この間、長い塵埃が掻取ローラに巻き付くことがあるが、掻取ローラに巻き付いた塵埃は、一対の掻取ローラの先端に向けて送り出される。このとき、塵埃の塊が一対の掻取ローラの先端間の空間に挟まることが生じ得る。この空間に挟まった塵埃の塊は、連通部を通じて吸込空間に作用する吸引源の吸引力により吸引される。この吸引力により、塵埃の塊が先端間の空間から離脱できるように、一対の掻取ローラの先端は、一対の掻取ローラの軸に対して傾斜した傾斜面を含んでいる。傾斜面の間の空間は、一対の掻取ローラの回転の間に、連通部によって形成された流路の開口側において狭く、この開口とは反対側において広くなった状態になり得る。この状態から一対の掻取ローラが１８０°だけ回転すれば、傾斜面間の空間の幅は、流路の開口側において広くなった状態になる。この状態では、傾斜面間の空間に挟まった塵埃の塊は、一対の掻取ローラの傾斜面に邪魔されることなく、当該空間から離脱し、連通部及び塵埃管路を通じて掃除機本体に吸い込まれる。 In the above configuration, when the drive unit rotates the pair of scraping rollers, these scraping rollers scrape dust. During this time, long pieces of dust may wind around the scraping rollers, and the dust wound around the scraping rollers is sent out toward the tips of the pair of scraping rollers. At this time, a clump of dust may be caught in the space between the tips of the pair of scraping rollers. A lump of dust caught in this space is sucked by the suction force of the suction source acting on the suction space through the communicating portion. The tip of the pair of scraping rollers includes an inclined surface that is inclined with respect to the axis of the pair of scraping rollers so that the suction force can separate the clumps of dust from the space between the tips. The space between the inclined surfaces can be narrowed on the opening side of the channel formed by the communicating portion and widened on the opposite side of the opening during the rotation of the pair of scraping rollers. When the pair of scraping rollers is rotated by 180° from this state, the width of the space between the inclined surfaces becomes wider on the opening side of the flow path. In this state, clumps of dust caught in the space between the inclined surfaces leave the space without being disturbed by the inclined surfaces of the pair of scraping rollers, and are sucked into the main body of the cleaner through the communicating portion and the dust pipe. be
　上述の構成において、駆動部は、一対の掻取ローラを個別に回転駆動して、一対の掻取ローラのうち一方の掻取ローラの回転位相が他方の掻取ローラの回転位相に対して遅れることを許容するように構成されていてもよい。傾斜面間の最も幅狭になる位置は、一対の掻取ローラの回転位相の相対的関係の変化によって変わってもよい。 In the above configuration, the driving unit rotates and drives the pair of scraping rollers individually, and the rotation phase of one of the pair of scraping rollers lags behind the rotation phase of the other scraping roller. It may be configured to allow The narrowest position between the inclined surfaces may be changed by changing the relative relationship of the rotation phases of the pair of scraping rollers.
　上述の構成では、傾斜面は、掻取ローラの軸に対して傾斜しているので、傾斜面間の空間において幅狭になる部分と幅広になる部分とが生ずる。一対の掻取ローラの回転位相が所定の関係になっている場合において最も幅狭になっている部分に挟まった塵埃は、吸引源の吸引力が作用しても除去されにくい。しかしながら、一対の掻取ローラの回転位相の相対的関係が変われば、最も幅狭になっている部分の位置が変わる。すなわち、回転位相の相対的関係の変化の前において最も幅狭になっていた部分の空間幅は大きくなり、当該部分に挟まっていた塵埃は、吸引源の吸引力により除去されやすくなる。 In the above configuration, since the inclined surfaces are inclined with respect to the axis of the scraping roller, there are narrow and wide portions in the space between the inclined surfaces. When the rotation phases of the pair of scraping rollers are in a predetermined relationship, the dust caught in the narrowest portion is difficult to remove even if the suction force of the suction source acts. However, if the relative relationship between the rotational phases of the pair of scraping rollers changes, the position of the narrowest portion changes. That is, the space width of the narrowest portion before the change in the relative relationship of the rotational phases increases, and the dust caught in that portion is easily removed by the suction force of the suction source.
　上述の構成において、駆動部は、一方の掻取ローラに対する負荷が他方の掻取ローラに対する負荷が高くなった場合に、一方の掻取ローラの回転位相が他方の掻取ローラの回転位相に対して遅れることを許容するように構成されていてもよい。 In the above configuration, when the load on one of the scraping rollers increases with the load on the other scraping roller, the drive unit changes the rotational phase of the one scraping roller relative to the rotational phase of the other scraping roller. may be configured to allow delays.
　上述の構成では、一方の掻取ローラに対する負荷が他方の掻取ローラに対する負荷が高くなった場合には、一方の掻取ローラの回転位相が他方の掻取ローラの回転位相に対して遅れることが許容されるので、掻取ローラ及び駆動部に無理な負荷が加わりにくくなる。 In the above configuration, when the load on one scraping roller increases with the load on the other scraping roller, the rotational phase of the one scraping roller lags behind the rotational phase of the other scraping roller. is allowed, it becomes difficult to apply an excessive load to the scraping roller and the drive unit.
　上述の構成において、一対の掻取ローラは、傾斜面間の空間が流路の開口と対向するように構成されていてもよい。 In the above configuration, the pair of scraping rollers may be configured such that the space between the inclined surfaces faces the opening of the flow path.
　上述の構成では、傾斜面間の空間が流路の開口と対向しているので、傾斜面間の空間が流路の開口側において広く、流路の開口とは反対側において狭くなった状態になったときにおいて、当該空間内の塵埃は、流路に吸い込まれやすくなる。 In the above configuration, the space between the inclined surfaces faces the opening of the flow channel, so that the space between the inclined surfaces is wide on the opening side of the flow channel and narrow on the opposite side to the opening of the flow channel. When this happens, dust in the space is easily sucked into the flow path.
　上述の構成において、一対の掻取ローラそれぞれは、先端に向けて細くなるテーパ形状を有していてもよい。ノズルケースは、流路の開口とは反対側において一対の掻取ローラの外周部がノズルケースの内面に沿うように一対の掻取ローラを傾斜した姿勢で保持するように構成されていてもよい。 In the above configuration, each of the pair of scraping rollers may have a tapered shape that tapers toward the tip. The nozzle case may be configured to hold the pair of scraping rollers in an inclined posture so that the outer peripheral portions of the pair of scraping rollers follow the inner surface of the nozzle case on the side opposite to the opening of the flow path. .
　上述の構成では、一対の掻取ローラそれぞれが、先端に向けて細くなるテーパ形状を有することにより、これらの掻取ローラに巻き付いた塵埃を先端側に移動させることが可能になる。一対の掻取ローラがテーパ形状を有していても、これらの掻取ローラを傾斜した姿勢で保持することにより、これらの掻取ローラの外周部をノズルケースの内面に沿わせることができる。これにより、流路の開口とは反対側において、掻取ローラの外周部とノズルケースの内面との間に過度に広い空間が形成されることが防止され、掻取ローラの長手方向において塵埃の吸込能力が過度に低くなった部分が発生することを抑制可能になる。 In the above configuration, each of the pair of scraping rollers has a tapered shape that tapers toward the tip, so that the dust wrapped around these scraping rollers can be moved to the tip side. Even if the pair of scraping rollers has a tapered shape, by holding these scraping rollers in an inclined posture, the outer peripheral portions of these scraping rollers can be made to follow the inner surface of the nozzle case. This prevents formation of an excessively wide space between the outer peripheral portion of the scraping roller and the inner surface of the nozzle case on the side opposite to the opening of the flow path, and prevents dust from being formed in the longitudinal direction of the scraping roller. It becomes possible to suppress the occurrence of a portion where the suction capacity is excessively low.
　このように掻取ローラが傾斜した姿勢で配置された場合において、仮に、掻取ローラの先端が掻取ローラの軸に対して直角な面で構成されれば、一対の掻取ローラの先端間の空間は、流路の開口に向けて狭まる形状を有する。この場合には、これらの掻取ローラの先端間に挟まった塵埃は、掻取ローラの先端面に引っ掛かり、掻取ローラの先端間の空間から除去されにくい。一方、一対の掻取ローラの先端が上述の傾斜面を含んでいれば、傾斜面間の空間が流路の開口に向けて拡がった状態を得ることが可能になり、傾斜面間からの塵埃の除去が促進される。 In the case where the scraping rollers are arranged in an inclined posture in this way, if the tips of the scraping rollers are formed in planes perpendicular to the axes of the scraping rollers, the distance between the tips of the pair of scraping rollers will be reduced. The space has a shape that narrows toward the opening of the channel. In this case, dust caught between the tips of these scraping rollers is caught on the tip surfaces of the scraping rollers and is difficult to remove from the space between the tips of the scraping rollers. On the other hand, if the tips of the pair of scraping rollers include the above-described inclined surfaces, it is possible to obtain a state in which the space between the inclined surfaces expands toward the opening of the flow path, and dust from between the inclined surfaces can be obtained. promotes the removal of
　上述の構成において、一対の掻取ローラそれぞれは、左右方向に延びるローラ本体と、ローラ本体とは別体に設けられて、ローラ本体の先端に取り付け可能に構成された先端部材と、を有していてもよい。傾斜面は、先端部材に形成されていてもよい。 In the above configuration, each of the pair of scraping rollers has a roller body extending in the left-right direction, and a tip member provided separately from the roller body and configured to be attachable to the tip of the roller body. may be The inclined surface may be formed on the tip member.
　上述の構成では、傾斜面は、ローラ本体ではなく、ローラ本体とは別体に設けられた先端部材に形成されている。先端部材がローラ本体に取り付けられれば、掻取ローラの先端に傾斜面を設けることができる。このように、傾斜面をローラ本体とは別体に設けられた先端部材に形成することにより、ローラ本体自体の形状を変更しなくても、先端部材の形状を変更するだけで、傾斜面間の空間の形状を変更可能になる。したがって、掻取ローラの設計変更が容易になる。 In the above configuration, the inclined surface is formed not on the roller main body but on the tip member provided separately from the roller main body. If the tip member is attached to the roller body, an inclined surface can be provided at the tip of the scraping roller. Thus, by forming the inclined surface on the tip member provided separately from the roller main body, it is possible to change the shape of the tip member without changing the shape of the roller main body itself. It becomes possible to change the shape of the space of Therefore, it becomes easy to change the design of the scraping roller.
　上述の実施形態に係る一の局面に係る掃除機は、上述の吸込ノズルと、塵埃を吸引する吸引力を発生する吸引源を内蔵した掃除機本体と、掃除機本体から延設されて、吸引源の吸引力により吸い込まれた塵埃が流れる塵埃管路と、を備えている。塵埃管路は、吸込ノズルに接続される。 A vacuum cleaner according to one aspect of the above-described embodiment includes a vacuum cleaner main body that includes the above-described suction nozzle and a suction source that generates a suction force for sucking dust; a dust conduit through which dust sucked by the suction force of the source flows. A dirt line is connected to the suction nozzle.
　本実施形態の技術は、清掃作業に用いられる装置に好適に利用される。 The technology of this embodiment is suitably used for devices used for cleaning work.

Claims (7)

  1. 　掃除機本体の吸引源が発生する吸引力により塵埃を吸引する塵埃管路に接続可能に構成された吸込ノズルであって、
    　塵埃を吸い込むための吸込空間を区画しているノズルケースと、
    　前記吸込空間に開口した流路を前記ノズルケースに形成するとともに前記塵埃管路に接続可能に構成された連通部と、
    　駆動力を発生させる駆動部と、
    　左右方向に間隔を空けて対向配置された先端を有しているとともに、前記駆動部の前記駆動力によって前記吸込空間内で回転しながら塵埃を掻き取りつつ、巻き付いた塵埃を前記先端に向けて送り出すように構成された一対の掻取ローラと、を備え、
    　前記一対の掻取ローラの前記先端は、前記一対の掻取ローラの軸に対して傾斜した傾斜面を含み、前記一対の掻取ローラが前記駆動部により回転しているときに、前記傾斜面間の空間の幅が前記流路の開口側において広く、前記開口とは反対側において狭くなった状態になることを許容する、吸込ノズル。     A suction nozzle configured to be connectable to a dust conduit for sucking dust by a suction force generated by a suction source of a vacuum cleaner body,
    a nozzle case defining a suction space for sucking dust;
    a communicating portion that forms a flow path that opens to the suction space in the nozzle case and that is configured to be connectable to the dust pipe;
    a driving unit that generates a driving force;
    It has tips that are opposed to each other with a space in the left-right direction, and rotates in the suction space by the driving force of the drive unit to scrape dust while directing the wound dust toward the tip. a pair of scraping rollers configured to feed;
    The tips of the pair of scraping rollers include inclined surfaces that are inclined with respect to the axes of the pair of scraping rollers, and when the pair of scraping rollers are rotated by the drive unit, the inclined surfaces A suction nozzle which allows the width of the space between to be wider on the opening side of said flow path and narrower on the side opposite said opening.
  2. 　前記駆動部は、前記一対の掻取ローラを個別に回転駆動して、前記一対の掻取ローラのうち一方の掻取ローラの回転位相が他方の掻取ローラの回転位相に対して遅れることを許容するように構成されており、
    　前記傾斜面間の最も幅狭になる位置は、前記一対の掻取ローラの前記回転位相の相対的関係の変化によって変わる、請求項１に記載の吸込ノズル。     The drive unit rotates and drives the pair of scraping rollers individually to prevent the rotational phase of one scraping roller from lagging behind the rotational phase of the other scraping roller. configured to allow
    2. The suction nozzle according to claim 1, wherein the narrowest position between said inclined surfaces changes according to a change in said relative relationship of said rotational phases of said pair of scraping rollers.
  3. 　前記駆動部は、前記一方の掻取ローラに対する負荷が前記他方の掻取ローラに対する負荷が高くなった場合に、前記一方の掻取ローラの回転位相が前記他方の掻取ローラの回転位相に対して遅れることを許容するように構成されている、請求項２に記載の吸込ノズル。 When the load applied to the one scraping roller becomes high, the drive unit adjusts the rotational phase of the one scraping roller relative to the rotational phase of the other scraping roller. 3. The suction nozzle of claim 2, wherein the suction nozzle is configured to allow for lagging.
  4. 　前記一対の掻取ローラは、前記傾斜面間の前記空間が前記流路の前記開口と対向するように構成されている、請求項１乃至３のいずれか１項に記載の吸込ノズル。 The suction nozzle according to any one of claims 1 to 3, wherein the pair of scraping rollers are configured such that the space between the inclined surfaces faces the opening of the flow path.
  5. 　前記一対の掻取ローラそれぞれは、前記先端に向けて細くなるテーパ形状を有しており、
    　前記ノズルケースは、前記流路の前記開口とは反対側において前記一対の掻取ローラの外周部が前記ノズルケースの内面に沿うように前記一対の掻取ローラを傾斜した姿勢で保持するように構成されている、請求項１乃至４のいずれか１項に記載の吸込ノズル。     Each of the pair of scraping rollers has a tapered shape that tapers toward the tip,
    The nozzle case holds the pair of scraping rollers in an inclined posture so that the outer peripheral portions of the pair of scraping rollers follow the inner surface of the nozzle case on the opposite side of the opening of the flow path. 5. A suction nozzle according to any one of claims 1 to 4, configured.
  6. 　前記一対の掻取ローラそれぞれは、前記左右方向に延びるローラ本体と、前記ローラ本体とは別体に設けられて、前記ローラ本体の先端に取り付け可能に構成された先端部材と、を有し、
    　前記傾斜面は、前記先端部材に形成されている、請求項１乃至５のいずれか１項に記載の吸込ノズル。     Each of the pair of scraping rollers has a roller body extending in the left-right direction, and a tip member provided separately from the roller body and configured to be attachable to the tip of the roller body,
    The suction nozzle according to any one of claims 1 to 5, wherein the inclined surface is formed on the tip member.
  7. 　請求項１乃至６のいずれか１項に記載の吸込ノズルと、
    　塵埃を吸引する吸引力を発生する吸引源を内蔵した掃除機本体と、
    　前記掃除機本体から延設されて、前記吸引源の前記吸引力により吸い込まれた塵埃が流れる塵埃管路と、を備え、
    　前記塵埃管路は、前記吸込ノズルに接続される、掃除機。     a suction nozzle according to any one of claims 1 to 6;
    a vacuum cleaner body with a built-in suction source that generates a suction force for sucking dust;
    a dust pipe extending from the main body of the cleaner through which dust sucked by the suction force of the suction source flows,
    The vacuum cleaner, wherein the dust conduit is connected to the suction nozzle.
PCT/JP2022/026260 2021-08-24 2022-06-30 Suction nozzle for vacuum cleaners and vacuum cleaner provided with suction nozzle WO2023026692A1 (en)

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