JP2019025150A - Suction port body and vacuum cleaner - Google Patents

Abstract

To provide a suction port body capable of quickly removing dust entering in brush bristles of a rotary cleaning body by rotation of the rotary cleaning body, and a vacuum cleaner.SOLUTION: A suction port body 26 includes: a suction port body 32 including a suction port 28 arranged at a bottom surface, a suction chamber 63 connected to the suction port 28, and a relay tube 66 connected via the suction chamber 63 to the suction port 28; a rotary cleaning body 29 arranged in the suction chamber 63, with it rotatably supported by the suction port body 32, and including brush bristles 65 extending in a normal direction; an electric motor 31 stored in the suction port body 32; a power transmission mechanism 51 for transmitting drive force from the electric motor 31 to the rotary cleaning body 29; and a brush-bristle dust removal part 55 projecting from an inner wall surface 71 of the suction chamber 63 to come into contact with the brush bristles 65, and throttling air to be sucked in the relay tube 66.SELECTED DRAWING: Figure 5

Description

  Embodiments according to the present invention relate to a suction port body and a vacuum cleaner.

  The cleaning member with its tip folded back is projected along the radial direction on the outer peripheral surface of the brush base of the rotating brush, and the tip of the brush is brought out of the cloth blade through the hole provided in the tip of the cloth blade of the cleaning member. A protruding suction port is known.

  This conventional suction port body prevents the dust from entering the base of the brush and wrapping the dust around the rotating brush with the cloth blade of the cleaning member.

Japanese Patent Laying-Open No. 2005-87644

  The conventional suction port body prevents dust from getting into the base of the brush and wrapping the dust around the rotating brush with the cloth blade of the cleaning member, while the surface to be cleaned, for example, the floor surface, remains in the state where the dust has entered the brush. To clean.

  Then, this invention proposes the suction inlet body which can remove rapidly the dust which entered between the bristles of a rotary cleaning body by rotation of a rotary cleaning body, and a vacuum cleaner.

  In order to solve the above-mentioned problem, a suction port according to an embodiment of the present invention includes a suction port disposed on a bottom surface, a suction chamber connected to the suction port, and a discharge port connected to the suction port via the suction chamber. A rotary cleaning body having brush bristles that are rotatably supported by the suction port main body and disposed in the suction chamber and extend in the normal direction, and the suction port main body. An electric motor to be accommodated, a power transmission mechanism for transmitting a driving force from the electric motor to the rotary cleaning body, and a brush hair that protrudes from an inner wall surface of the suction chamber and contacts the brush hair and squeezes air sucked into the discharge port A dust removing unit.

  Moreover, the vacuum cleaner which concerns on embodiment of this invention is a vacuum cleaner main body, the electric blower accommodated in the said vacuum cleaner main body and generating a negative pressure, and the said suction inlet body fluidly connected to the said electric blower And.

The perspective view of the appearance of the electric vacuum cleaner concerning the embodiment of the present invention. The perspective view which shows the suction inlet concerning the embodiment of this invention from the right front. The longitudinal cross-sectional view of the suction inlet which concerns on embodiment of this invention. The perspective view which shows the suction inlet concerning the embodiment of this invention from the left front. The front view of the suction inlet which concerns on embodiment of this invention. The longitudinal cross-sectional view of the suction inlet which concerns on embodiment of this invention.

  Embodiments of a suction port body and a vacuum cleaner according to the present invention will be described with reference to FIGS. 1 to 6.

  FIG. 1 is a perspective view of the appearance of a vacuum cleaner according to an embodiment of the present invention.

  As shown in FIG. 1, the vacuum cleaner 1 according to this embodiment is a so-called canister type. The vacuum cleaner 1 includes a vacuum cleaner body 2 that can travel on a surface to be cleaned, and a pipe portion 3 that can be attached to and detached from the cleaner body 2.

  The vacuum cleaner main body 2 includes a main body case 5, a pair of wheels 6 provided on the left and right sides of the main body case 5, a detachable dust separating device 7 disposed in the first half of the main body case 5, and a main body case 5, an electric blower 8 accommodated in the latter half of the electric power supply 5, a main body control unit 9 that mainly controls the electric blower 8, and a power cord 11 that guides electric power to the electric blower 8.

  The vacuum cleaner body 2 drives the electric blower 8 with electric power supplied through the power cord 11. The suction negative pressure generated by driving the electric blower 8 acts on the pipe portion 3. The vacuum cleaner 1 sucks air containing dust from the surface to be cleaned (hereinafter referred to as “dust-containing air”) by suction negative pressure acting on the tube portion 3, and separates dust from the dust-containing air. The separated dust is collected and accumulated, while clean air from which the dust has been removed is exhausted.

  A main body connection port 12 is provided in the front portion of the main body case 5. The main body connection port 12 is a fluid inlet of the cleaner body 2. The main body connection port 12 has a joint structure to which the pipe part 3 can be attached and detached. The main body connection port 12 fluidly connects the pipe portion 3 to the dust separation device 7.

  The wheel 6 is a large-diameter traveling wheel that supports the cleaner body 2. The vacuum cleaner main body 2 includes a caster (not shown) provided on the bottom surface of the main body case 5 in addition to the wheels 6.

  The dust separator 7 separates dust from the dust-containing air flowing into the cleaner body 2, collects and accumulates it, and sends clean air from which dust has been removed to the electric blower 8. The dust separation device 7 has inertia such as a filter for collecting and collecting dust, centrifugal separation (cyclone separation), and straight separation (separation method that separates dust and air by the difference in inertia force between the straight air and dust). A separation device that accumulates dust by separation.

  The electric blower 8 sucks air from the dust separator 7 and generates a negative pressure (suction negative pressure).

  The main body control unit 9 includes a microprocessor (not shown) and a storage device (not shown) that stores various calculation programs executed by the microprocessor, parameters of the calculation program, and the like. The storage device stores a plurality of preset operation modes. The plurality of operation modes set in advance correspond to a user's operation in which the pipe unit 3 receives an input. Different input values (input values of the electric blower 8) are set in the respective operation modes. The main body control unit 9 selectively selects an operation mode corresponding to the operation content from a plurality of operation modes set in advance according to the operation of the user who receives input from the tube unit 3. Moreover, the main body control part 9 reads the setting content of the selected operation mode from a memory | storage part, and operates the electric blower 8 according to the read setting content.

  The power cord 11 supplies power to the cleaner body 2 from a wiring plug connector (not shown, so-called outlet). A plug 14 is provided at the free end of the power cord 11.

  The pipe portion 3 sucks dust-containing air from the surface to be cleaned by the negative pressure acting from the cleaner body 2. Moreover, the pipe part 3 sends the sucked dust-containing air to the cleaner body 2. The pipe part 3 is connected to the connection pipe 19 as a joint that is detachably connected to the main body connection port 12 of the cleaner body 2, the dust collection hose 21 that is fluidly connected to the connection pipe 19, and the dust collection hose 21. A hand operating tube 22 that is fluidly connected, a gripping portion 23 protruding from the hand operating tube 22, an operation portion 24 provided on the gripping portion 23, and an extension tube 25 that is detachably connected to the hand operating tube 22 The suction port body 26 is detachably connected to the extension pipe 25.

  The connection pipe 19 is fluidly connected to the dust separation device 7 through the main body connection port 12.

  The dust collection hose 21 is a long and flexible substantially cylindrical hose. One end (here, the rear end) of the dust collection hose 21 is fluidly connected to the connection pipe 19. The dust collection hose 21 is fluidly connected to the dust separation device 7 through the connection pipe 19.

  The hand operation tube 22 has an air passage connecting the dust collection hose 21 and the extension tube 25. One end (here, the rear end) of the hand operating tube 22 is fluidly connected to the other end (here, the front end) of the dust collecting hose 21. The hand operating tube 22 is fluidly connected to the dust separating device 7 through the dust collecting hose 21 and the connecting tube 19 sequentially.

  The grip portion 23 is a portion that can be gripped by the user's hand in order to operate the vacuum cleaner 1. The grip portion 23 protrudes from the hand operation tube 22 in an appropriate shape that can be easily gripped by the user's hand.

  The operation unit 24 includes a switch that receives a selection operation for each operation mode. Specifically, the operation unit 24 includes a stop switch 24 a that receives an operation stop operation of the electric blower 8 and an activation switch 24 b that receives an operation start operation of the electric blower 8. The stop switch 24 a and the start switch 24 b are electrically connected to the main body control unit 9. The user of the vacuum cleaner 1 can alternatively select the operation mode of the electric blower 8 by operating the operation unit 24. During operation of the electric blower 8, the start switch 24b also functions as an operation mode selection switch. During operation of the electric blower 8, the main body control unit 9 switches the operation mode in the order of strong → medium → weak → strong →... Every time an operation signal is acquired from the start switch 24b. Note that the operation unit 24 has a plurality of operation mode selection switches such as a weak operation switch (not shown), a medium operation switch (not shown), and a strong operation switch (not shown) instead of the single start switch 24b. You may be prepared for.

  An extension tube 25 having a telescopic structure in which a plurality of cylindrical bodies are overlapped is an elongated and substantially cylindrical tube that can be expanded and contracted. One end portion (here, the rear end portion) of the extension tube 25 is provided with a joint structure that can be attached to and detached from the other end portion (here, the front end portion) of the hand operation tube 22. The extension pipe 25 is fluidly connected to the dust separator 7 through the hand operation pipe 22, the dust collection hose 21, and the connection pipe 19.

  The suction port body 26 can run or slide on a surface to be cleaned such as a wooden floor or a carpet. The suction port body 26 has a suction port 28 on the bottom surface facing the surface to be cleaned in the running state or the sliding state. Further, the suction port body 26 includes a rotatable rotary cleaning body 29 disposed in the suction port 28 and an electric motor 31 that rotationally drives the rotary cleaning body 29. One end portion (here, the rear end portion) of the suction port body 26 is provided with a joint structure that can be attached to and detached from the other end portion (here, the front end portion) of the extension pipe 25. This joint structure is a universal joint. The suction port body 26 is fluidly connected to the dust separator 7 through the extension pipe 25, the hand operation pipe 22, the dust collection hose 21, and the connection pipe 19. That is, the suction port body 26, the extension tube 25, the hand operation tube 22, the dust collection hose 21, the connection tube 19, and the dust separation device 7 are suction air passages that lead from the electric blower 8 to the suction port 28.

  When the electric blower 8 is stopped, the electric vacuum cleaner 1 starts the electric blower 8 when the operation of the user is received by the start switch 24b. For example, when the start switch 24b is operated when the electric blower 8 is stopped, the electric vacuum cleaner 1 operates the electric blower 8 in the strong operation mode first, and when the start switch 24b is operated again, the electric blower is operated. 8 is operated in the medium operation mode, and when the start switch 24b is operated three times, the electric blower 8 is operated in the weak operation mode, and the same is repeated thereafter. The strong operation mode, the medium operation mode, and the weak operation mode are a plurality of operation modes set in advance. The input value to the electric blower 8 is small in the order of the strong operation mode, the medium operation mode, and the weak operation mode. The started electric blower 8 exhausts air from the dust separation device 7 to make the inside thereof a negative pressure (suction negative pressure).

  The negative pressure acting on the dust separator 7 acts on the suction port 28 through the main body connection port 12, the connection tube 19, the dust collecting hose 21, the hand operation tube 22, the extension tube 25, and the suction port body 26 in order. . The vacuum cleaner 1 cleans the surface to be cleaned by sucking the dust on the surface to be cleaned together with air by the negative pressure applied to the suction port 28. The dust separating device 7 separates and accumulates dust from the dust-containing air sucked into the electric vacuum cleaner 1, and sends clean air after separating the dust to the electric blower 8. The electric blower 8 exhausts the air sucked from the dust separator 7 to the outside of the cleaner body 2.

  Next, the suction port body 26 will be described in detail.

  FIG. 2 is a perspective view showing the suction port body according to the embodiment of the present invention from the right front side.

  As shown in FIG. 2, the suction port body 26 according to the present embodiment includes a substantially rectangular parallelepiped suction port main body portion 32 and a connecting pipe portion 33 provided at the rear portion of the suction port main body portion 32.

  In addition, front and rear, left and right, and upper and lower of the suction port body 26 will be described based on the user of the vacuum cleaner 1. The direction of the solid arrow X in FIG. 2 is the forward or forward direction of the suction port body 26, and the opposite direction is the backward or backward direction. Moreover, the direction of the solid line arrow Y in FIG. 2 is the left side of the suction inlet 26, and the opposite direction is the right side. Furthermore, the direction of the solid line arrow Z in FIG. 2 is above the suction inlet 26, and the opposite direction is downward.

  The suction port body 32 is longer in the left-right dimension (width) than in the front-rear dimension (depth). In other words, the suction inlet main body 32 has a short side in the front-rear direction and a long side in the left-right direction. The suction port main body 32 includes a box-shaped lower case 41 whose upper side is opened, and an upper case 42 that covers the lower case 41. The upper case 42 includes an upper front case 43 disposed on the front side and an upper rear case 44 disposed on the rear side.

  The connecting pipe portion 33 is provided at the rear portion of the suction port main body portion 32 and at the substantially central portion in the width direction. The connection pipe part 33 includes a rotary connection pipe part 46 that can rotate with respect to the suction port main body part 32, and a swing connection pipe part 47 that can swing with respect to the rotary connection pipe part 46.

  The rotary connecting pipe portion 46 rotates around an axis (an axis that coincides with the X axis or an axis that is parallel to the X axis) along the front-rear direction of the suction port body 26.

  The swing connection pipe portion 47 swings about an axis orthogonal to the rotation axis of the rotary connection pipe portion 46 (an axis coinciding with the X axis or an axis parallel to the X axis). The free end of the swing connecting pipe 47 is a joint that can be attached to and detached from the free end of the extension pipe 25.

  FIG. 3 is a longitudinal sectional view of a suction port body according to the embodiment of the present invention.

  FIG. 4 is a perspective view showing the suction port body according to the embodiment of the present invention from the left front side.

  FIG. 5 is a front view of the suction port body according to the embodiment of the present invention.

  4 and 5, the upper case 42, the rotary cleaning body 29, and the belt (not shown) of the power transmission mechanism 51 are omitted.

  As shown in FIG. 3 and FIG. 4, the suction port body 26 according to the present embodiment includes a suction port body portion 32, a rotary cleaning body 29 that is rotatably supported by the suction port body portion 32, and a suction port body portion. The electric motor 31 accommodated in 32, the suction inlet control part 53, and the brush hair dust removal part 55 are provided.

  The lower case 41 and the upper rear case 44 of the suction port main body portion 32 partition most of the machine chamber 61 in which the electric motor 31 is accommodated and the control chamber 62 in which the suction port body control unit 53 is accommodated. . The lower case 41, the upper front case 43, and the upper rear case 44 define a suction chamber 63 in which the rotary cleaning body 29 is accommodated. In other words, the lower case 41 accommodates the lower half of the suction chamber 63 in which the rotary cleaning body 29 is accommodated, the lower half of the machine chamber 61 in which the electric motor 31 is accommodated, and the suction port control unit 53. The lower half of the control room 62 is partitioned. The upper rear case 44 divides most of the upper half of the machine room 61 and the upper half of the control chamber 62, and closes the upper part of the machine room 61 and the upper part of the control chamber 62. The upper front case 43 and the upper rear case 44 define the upper half of the suction chamber 63 and close the upper portion of the suction chamber 63. The upper front case 43 corresponds to the outer wall of the suction chamber 63. The upper rear case 44 separates the upper half of the suction chamber 63 from the upper half of the machine chamber 61 and separates the upper half of the suction chamber 63 from the upper half of the control chamber 62. The upper rear case 44 has a part of the inner wall surface 71 of the suction chamber 63.

  The suction chamber 63 is partitioned in the front half of the suction port main body 32. The suction chamber 63 extends in the width direction of the suction port main body 32. The suction chamber 63 is connected to the suction port 28 disposed on the bottom surface of the suction port main body 32. In other words, the suction chamber 63 is opened through the suction port 28.

  The machine room 61 extends from the left half of the second half of the suction port body 32 to the left side. In other words, the machine room 61 surrounds the left side of the suction chamber 63 and the rear left half. A left side portion of the suction chamber 63 in the machine chamber 61 is partitioned by an upper front case 43 and a lower case 41.

  The control chamber 62 is disposed in the right half of the second half of the suction port main body 32.

  The rotary cleaning body 29 is disposed in the suction chamber 63. The rotation center line of the rotary cleaning body 29 is directed in the width direction of the suction port main body 32. The rotary cleaning body 29 has brush bristles 65 extending in the normal direction. The brush bristles 65 are a plurality of brushes extending in the longitudinal direction of the rotary cleaning body 29, and are arranged radially in the circumferential direction of the rotary cleaning body 29.

  The electric motor 31 is disposed in a rear portion of the suction chamber 63 in the machine chamber 61. The electric motor 31 includes an output shaft (not shown) that protrudes toward the inner surface of the left side wall of the suction port main body 32. The rotation center line of the output shaft is substantially parallel to the rotation center line of the rotary cleaning body 29. The electric motor 31 rotates the rotary cleaning body 29 in a direction that assists the advancement of the suction port body 26 (solid arrow r in FIG. 3).

  The suction port body control unit 53 operates the electric motor 31 with electric power supplied from the cleaner body 2 through the connection pipe 19, the dust collection hose 21, the hand operation pipe 22 and the extension pipe 25.

  The suction port body 26 includes a relay pipe 66 that fluidly connects the suction chamber 63 and the connection pipe portion 33 (more specifically, the rotary connection pipe portion 46), and an electric motor that floats and supports the electric motor 31 on the suction port main body portion 32. A support portion (not shown), a main gear (not shown) fixed to the output shaft (not shown) of the electric motor 31, a driven gear (not shown) provided in the rotary cleaning body 29, a main gear and a driven gear, And an endless belt (not shown) that transmits the driving force from the electric motor 31 to the rotary cleaning body 29.

  The relay pipe 66 is a discharge port connected to the suction port 28 through the suction chamber 63. The relay pipe 66 is disposed at the rear center of the suction chamber 63, that is, between the machine chamber 61 and the control chamber 62. The relay pipe 66 separates the machine room 61 and the control room 62.

  The brush hair dust removing unit 55 protrudes from the inner wall surface 71 of the suction chamber 63, contacts the brush hair 65 of the rotary cleaning body 29, and throttles the air sucked into the relay pipe 66. The brush dust removal unit 55 is provided integrally with the upper rear case 44. The brush dust removal unit 55 contacts substantially over the entire width of the rotary cleaning body 29.

  The brush dust removal unit 55 has an arc-shaped contact surface 72 (FIG. 6) that follows the outer shape of the rotary cleaning body 29. The contact surface 72 according to the present embodiment narrows from the left and right sides of the suction chamber 63 toward the relay pipe 66 so that the contact distance becomes shorter as the distance from the relay pipe 66 becomes closer in the width direction of the rotary cleaning body 29. . The contact surface 72 may have a uniform contact distance in the width direction of the rotary cleaning body 29. Further, the contact surface 72 may have an unevenness 73 (two-dot chain line in FIG. 6).

  As shown in FIG. 3, the suction chamber 63 is a first space 75 connected to the relay pipe 66 in a state where the suction port body 26 is disposed on the surface to be cleaned and the rotary cleaning body 29 is in contact with the surface to be cleaned f. And a second space 76 isolated from the relay pipe 66. The first space 75 is partitioned by the surface to be cleaned f, the rotary cleaning body 29, the inner wall of the suction chamber 63, and the brush dust removal unit 55. The second space 76 is partitioned by the surface to be cleaned f, the rotary cleaning body 29, the inner wall of the suction chamber 63, and the brush dust removal unit 55, and the contact portion a between the rotary cleaning body 29 and the surface to be cleaned f. The contact portion b between the rotary cleaning body 29 and the brush dust / dust removing portion 55 is separated from the relay pipe 66.

  That is, the suction port body 26 is formed in the second space 76 by the contact portion b between the rotary cleaning body 29 and the brush dust removal unit 55 in addition to the contact portion a between the conventional rotary cleaning body 29 and the surface to be cleaned f. The air sucked into the relay pipe 66 from the side is throttled.

  The brush dust removal unit 55 covers and covers a portion of the relay pipe 66 that is far from the suction port 28. The brush dust removal unit 55 covers and closes a portion of the relay pipe 66 far from the suction port 28, thereby reliably separating the first space 75 and the second space 76 of the suction chamber 63. The brush dust removal unit 55 substantially covers and hides the upper half of the relay pipe 66 in a front view.

  The rotary cleaning body 29 is provided with a sufficient amount of brush bristles 65 to increase the flow rate of air sucked into the relay pipe 66 through the bristles 65 in contact with the brush bristles dust removing portion 55. That is, the amount of the bristles 65 may be provided continuously (densely) or discontinuously (diffusely) in both the circumferential direction and the width direction of the rotary cleaning body 29. The amount of the brush bristles 65 may be such that the amount of air flow in the entire width of the bristles dust removing unit 55 is reduced by the brush bristles 65 coming into contact with the brush bristle dust removing unit 55. That is, the plurality of brush bristles 65 may be substantially integrated around the rotary cleaning body 29, may be spirally wound around the rotary cleaning body 29, or may be wound around the rotary cleaning body 29. It may extend linearly in the width direction.

  The brush bristles 65 may have a coating of polytetrafluoroethylene (PTFE, so-called Teflon (registered trademark)) so as to easily remove attached dust. The bristle 65 has a long bristle, and the long bristle 78 that comes into contact with the brush bristle dust removing unit 55 sequentially as the rotary cleaning body 29 rotates, and the bristle short are separated from the brush bristle dust removing unit 55. Short brush bristles 79.

  The long brush hair 78 strongly wipes a hard surface to be cleaned like a flooring and removes fine dust adhering to the surface. The length of the bristle legs of the long brush hairs 78 is preferably as short as possible within the range of contact with the brush hair dust removing unit 55 from the viewpoint of the load when the rotary cleaning body 29 is rotated.

  The short brush bristles 79 are soft like a carpet and knock out dust from the surface to be cleaned such that dust enters between the bristles. The length of the bristle leg of the short brush hair 79 is preferably as long as possible within the range not contacting the brush hair dust removing portion 55 from the viewpoint of restricting the air flowing between the first space 75 and the second space 76 as much as possible. .

  6 is a longitudinal sectional view of the suction port body according to the embodiment of the present invention, taken along the line VI-VI in FIG.

  In addition to FIGS. 4 and 5, as shown in FIG. 6, the suction port body 32 has an electric motor cooling air port 81 that connects the machine chamber 61 and the suction chamber 63.

  The motor cooling air outlet 81 connects the first space 75 of the suction chamber 63 and the machine chamber 61. The motor cooling air outlet 81 exhausts the air in the machine chamber 61 that has taken heat from the motor 31 from the periphery of the motor 31 to the suction chamber 63. The motor cooling air outlet 81 is a slit-like opening extending up and down the suction inlet body 26. There are a plurality of motor cooling air vents 81, which are arranged along the motor 31 in the width direction of the suction chamber 63.

  The motor cooling air vent 81 may be provided in at least one of the lower case 41 and the upper rear case 44. The motor cooling air vent 81 according to the present embodiment is provided in both the lower case 41 and the upper rear case 44.

  In addition, the brush dust removal part 55 may have the hole 82 (The dashed-two dotted line in FIG. 5 and FIG. 6). There may be a plurality of holes 82 in the width direction of the suction port main body 32. The hole 82 connects the first space 75 and the second space 76 of the suction chamber 63. The suction port body 26 can adjust the amount of air leakage at the contact portion between the rotary cleaning body 29 and the brush dust removal unit 55 according to the number and size of the holes 82, that is, the total opening area of the holes 82. The amount of air leakage at the contact portion between the rotary cleaning body 29 and the brush hair dust removing unit 55 adjusts the speed of the airflow that carries the dust scraped from the brush hair 65 by the brush hair dust removing unit 55 to the relay pipe 66. .

  The suction port body 26 operates the electric motor 31 to rotate the rotary cleaning body 29. The rotating cleaning body 29 in rotation causes the bristles 65, particularly the long bristles 78, to contact the bristles / dust remover 55 sequentially. The brush bristle dust removing unit 55 knocks out fine dust that is wiped from the surface to be cleaned and adheres to the long brush hair 78 from the long brush hair 78. At this time, the first space 75 and the second space 76 of the suction chamber 63 are separated by long brush hairs 78 that are in contact with the brush hair dust removing unit 55. As a result, the flow velocity of air sucked from the second space 76 side to the first space 75 side is increased. This air flow causes the dust struck from the long brush bristles 78 to flow strongly into the relay pipe 66.

  In addition, since the rotary cleaning body 29 is rotating in a direction (solid arrow r in FIG. 3) that assists the advancement of the suction port body 26, when the long brush hair 78 comes into contact with the brush hair dust removing portion 55, the long The dust adhering to the bristle 78 is knocked down into the first space 75 exclusively. The dust knocked down into the first space 75 is strongly poured into the relay pipe 66.

  The rotary cleaning body 29 may be rotated in a direction that assists the retraction of the suction port body 26 (in the direction opposite to the solid arrow r in FIG. 3). In this case, when the long brush hair 78 comes into contact with the brush hair dust removing portion 55, the dust adhering to the long brush hair 78 is struck down exclusively into the second space 76. The dust knocked down into the second space 76 passes through between the brush hairs 65 in contact with the brush bristle dust removing unit 55 or through the gap generated when the brush bristle 65 is separated from the brush bristle dust removing unit 55 to the relay pipe 66. Strongly poured.

  As described above, the suction port body 26 and the vacuum cleaner 1 according to the present embodiment include the brush hair dust removing unit 55 that contacts the brush hair 65 and squeezes the air sucked into the relay pipe 66. For this reason, the suction port body 26 and the electric vacuum cleaner 1 slash the dust adhering to the brush bristles 65 (dust that has entered the bristles 65), and from the brush bristles 65 by the flow of air having a higher flow velocity than the surroundings. The struck dust is quickly moved away from the brush bristles 65. In other words, the suction port body 26 and the vacuum cleaner 1 reliably prevent dust that has been knocked down from the brush bristles 65 from reattaching to the brush bristles 65.

  Further, the suction port body 26 and the vacuum cleaner 1 according to the present embodiment are provided with a sufficient amount of brush bristles 65 to increase the flow velocity of the air sucked into the relay pipe 66. Therefore, the suction port body 26 and the vacuum cleaner 1 reliably generate a strong air flow for quickly moving away the dust struck from the brush bristles 65 from the brush bristles 65.

  Further, the suction port body 26 and the electric vacuum cleaner 1 according to the present embodiment include a brush hair dust removing unit 55 having an arc-shaped contact surface 72 that follows the outer shape of the rotary cleaning body 29. Therefore, the suction port body 26 and the vacuum cleaner 1 squeeze the air sucked into the relay pipe 66, and ensure a strong air flow for quickly moving away the dust blown off from the brush bristles 65 from the brush bristles 65. generate.

  Furthermore, the suction inlet body 26 and the vacuum cleaner 1 according to the present embodiment include a contact surface 72 having an unevenness 73. The unevenness 73 repels the brush hair 65 a plurality of times while the brush hair 65 passes over the contact surface 72, and more reliably beats dust adhering to the brush hair 65 (dust entering the brush hair 65).

  Further, the suction port body 26 and the vacuum cleaner 1 according to the present embodiment include a brush hair dust removing unit 55 that covers and blocks a portion of the relay pipe 66 far from the suction port 28. Therefore, the suction port body 26 and the vacuum cleaner 1 concentrate the flow of air flowing from the suction port 28 into the relay pipe 66 so as to flow directly into the relay pipe 66 through the first space 75 from the surface to be cleaned f. The suction force is improved by reducing the flow of air that flows around the second space 76 and flows into the relay pipe 66.

  Furthermore, the suction inlet 26 and the vacuum cleaner 1 according to the present embodiment have brush bristles 65 having a polytetrafluoroethylene coating. Therefore, the suction port body 26 and the vacuum cleaner 1 are easy to knock off dust when the brush hair 65 is brought into contact with the brush hair dust removing portion 55.

  Furthermore, the suction port body 26 and the vacuum cleaner 1 according to the present embodiment include long brush hairs 78 that sequentially contact the brush hair dust removing unit 55 as the rotary cleaning body 29 rotates, and the brush hair dust removing unit. Short brush bristles 79 spaced apart from 55. Therefore, the suction port body 26 and the electric vacuum cleaner 1 can suppress the load of the electric motor 31 that rotates the rotary cleaning body 29 as compared with the case where the brush bristles 65 are always in contact with the brush hair dust removing unit 55.

  In addition, the suction port body 26 and the vacuum cleaner 1 according to the present embodiment include a brush dust removal unit 55 having a hole 82. Therefore, the suction port body 26 and the vacuum cleaner 1 also add the speed of the air increasing around the brush hair dust removing portion 55 to the gap between the hairs of the brush hair 65 and also depending on the opening area of the hole 82. Can be adjusted.

  Furthermore, the suction inlet body 26 and the vacuum cleaner 1 according to the present embodiment include an electric motor cooling air outlet 81 that connects the machine chamber 61 and the suction chamber 63. Therefore, the suction port body 26 and the vacuum cleaner 1 cool the electric motor 31 and introduce outside air into the first space 75 from other than the suction port 28 to flow dust struck from the brush bristles 65 into the relay pipe 66. .

  Therefore, according to the suction port body 26 and the electric vacuum cleaner 1 according to the present embodiment, the dust that has entered between the brush hairs 65 of the rotary cleaning body 29 can be quickly removed by the rotation of the rotary cleaning body 29.

  The vacuum cleaner 1 according to the present embodiment is not limited to a canister type, but may be an upright type, a stick type, or a handy type.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Electric vacuum cleaner, 2 ... Vacuum cleaner main body, 3 ... Pipe part, 5 ... Main body case, 6 ... Wheel, 7 ... Dust separator, 8 ... Electric blower, 9 ... Main body control part, 11 ... Power cord, 12 ... Main body connection port, 14 ... Plug, 19 ... Connection pipe, 21 ... Dust collection hose, 22 ... Hand control pipe, 23 ... Grasping part, 24 ... Operation part, 24a ... Stop switch, 24b ... Start switch, 25 ... Extension Pipe, 26 ... Suction port, 28 ... Suction port, 29 ... Rotary cleaning body, 31 ... Electric motor, 32 ... Suction port body, 33 ... Connection pipe, 41 ... Lower case, 42 ... Upper case, 43 ... Upper front Case: 44 ... Upper rear case, 46 ... Rotation connection pipe part, 47 ... Swing connection pipe part, 51 ... Power transmission mechanism, 53 ... Suction port body control part, 55 ... Brush dust removal part, 61 ... Machine room, 62 ... Control room, 63 ... Suction room, 65 ... Brush hair, 66 ... Relay pipe, 71 ... Inner wall surface 72 ... contact surface 73 ... uneven, 75 ... first space, 76 ... second space, 78 ... long bristles 79 ... short bristles, 81 ... motor cooling air inlet, 82 ... hole.

Claims (10)

A suction port body having a suction port disposed on the bottom surface, a suction chamber connected to the suction port, and a discharge port connected to the suction port via the suction chamber;
A rotary cleaning body rotatably supported by the suction port body and disposed in the suction chamber and having brush hairs extending in a normal direction;
An electric motor housed in the suction port body,
A power transmission mechanism for transmitting a driving force from the electric motor to the rotary cleaning body;
A suction port body comprising: a brush hair dust removing portion that protrudes from an inner wall surface of the suction chamber, contacts the brush hair, and squeezes air sucked into the discharge port. The suction inlet body according to claim 1, comprising the brush bristles in an amount that increases a flow rate of air sucked into the discharge outlet. The suction mouth body according to claim 1 or 2, wherein the brush dust removal unit has an arc-shaped contact surface that follows the outer shape of the rotary cleaning body. The suction port according to claim 3, wherein the contact surface has irregularities. The suction opening body according to any one of claims 1 to 4, wherein the brush dust removing unit covers and closes a portion of the discharge port that is far from the suction port. The suction mouth according to any one of claims 1 to 5, wherein the brush bristles have a polytetrafluoroethylene coating. The bristle has a long bristle, and the long bristle that comes into contact with the brush hair dust removal unit sequentially as the rotary cleaning body rotates, and the bristle is short and spaced from the brush hair dust removal unit. The suction inlet body according to any one of claims 1 to 6, comprising short brush hairs. The suction port body according to any one of claims 1 to 7, wherein the brush dust removal unit has a hole. The suction port body according to any one of claims 1 to 8, wherein the suction port main body portion has a machine room that houses the electric motor, and an electric motor cooling air port that connects the machine room and the suction chamber. The vacuum cleaner body,
An electric blower that is housed in the vacuum cleaner body and generates negative pressure;
A vacuum cleaner provided with the suction inlet of any one of Claim 1 to 9 fluidly connected to the said electric blower.

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