JP7012480B2 - Suction port and vacuum cleaner - Google Patents

Description

The embodiment according to the present invention relates to a suction port and an electric vacuum cleaner.

A cleaning member with the tip folded back is projected from the outer peripheral surface of the brush base of the rotating brush along the radial direction, and the tip of the brush is moved to the outside of the cloth blade from the hole provided in the tip of the cloth blade of the cleaning member. A protruding suction port is known.

In this conventional suction port body, dust enters the root of the brush, and the dust is prevented from being wrapped around the rotating brush by the cloth blade of the cleaning member.

Japanese Unexamined Patent Publication No. 2005-87644

In the conventional suction port, dust enters the root of the brush and is prevented from being wrapped around the rotating brush by the cloth blade of the cleaning member, while the surface to be cleaned, for example, the floor surface, is kept in the state where the dust has entered the brush. Clean up.

Therefore, the present invention proposes a suction port body and an electric vacuum cleaner that can quickly remove dust that has entered between the brush hairs of the rotary cleaning body by rotating the rotary cleaning body.

In order to solve the above problems, the suction port body according to the embodiment of the present invention has a suction port arranged 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 suction port main body having It is provided with a power transmission mechanism that transmits a driving force from the rotary cleaning body to the rotary cleaning body, and a brush dust removing unit that protrudes from the inner wall surface of the suction chamber and comes into contact with the brush bristles to squeeze the air sucked into the discharge port. In the direction along the rotation center line of the rotary cleaning body, the opening width of the discharge port is narrower than the opening width of the suction port, and the length of the contact surface of the brush dust removing portion in the rotation direction of the rotary cleaning body. The closer it is to the discharge port, the shorter it is .

Further, the electric vacuum cleaner according to the embodiment of the present invention includes a vacuum cleaner main body, an electric blower housed in the vacuum cleaner main body to generate a negative pressure, and the suction port body fluidly connected to the electric blower. And have.

The perspective view of the appearance of the vacuum cleaner which concerns on embodiment of this invention. The perspective view which shows the suction port body which concerns on embodiment of this invention from the right front. The vertical sectional view of the suction port body which concerns on embodiment of this invention. The perspective view which shows the suction port body which concerns on embodiment of this invention from the left front. The front view of the suction port body which concerns on embodiment of this invention. The vertical sectional view of the suction port body which concerns on embodiment of this invention.

An embodiment of the suction port and the 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 the vacuum cleaner according to the embodiment of the present invention.

As shown in FIG. 1, the vacuum cleaner 1 according to the present embodiment is a so-called canister type. The vacuum cleaner 1 includes a vacuum cleaner main body 2 that can travel on the surface to be cleaned, and a pipe portion 3 that can be attached to and detached from the vacuum cleaner main 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 removable dust separating device 7 arranged in the front half of the main body case 5, and a main body case. It includes an electric blower 8 housed in the latter half of 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 main body 2 drives the electric blower 8 with the 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 dust-containing air (hereinafter referred to as "dust-containing air") from the surface to be cleaned by the suction negative pressure acting on the pipe portion 3, and separates the dust from the dust-containing air. The separated dust is collected and accumulated, while the clean air from which the dust has been removed is exhausted.

A main body connection port 12 is provided on the front portion of the main body case 5. The main body connection port 12 is a fluid inlet of the vacuum cleaner main body 2. The main body connection port 12 has a joint structure in which the pipe portion 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 vacuum cleaner main body 2. The vacuum cleaner main body 2 includes casters (not shown) provided on the bottom surface of the main body case 5 in addition to the wheels 6.

The dust separating device 7 separates dust from the dust-containing air flowing into the vacuum cleaner main body 2, collects and accumulates the dust, and sends clean air from which the dust has been removed to the electric blower 8. The dust separation device 7 has an inertia such as a filter for filtering and collecting dust, centrifugal separation (cyclone separation), and straight-line separation (separation method for separating dust and air by the difference in inertial force between straight-moving air and dust). It is a separation device that accumulates dust by separation.

The electric blower 8 sucks air from the dust separating device 7 to generate 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 arithmetic programs executed by the microprocessor, parameters of the arithmetic program, and the like. The storage device stores a plurality of preset operation modes. The plurality of preset operation modes correspond to the user's operation in which the pipe unit 3 accepts the input. Different input values (input values of the electric blower 8) are set in each operation mode. The main body control unit 9 selectively selects an operation mode corresponding to the operation content from a plurality of preset operation modes according to the operation of the user whose pipe unit 3 accepts the input. Further, the main body control unit 9 reads out the setting contents of the selected operation mode from the storage unit, and operates the electric blower 8 according to the read setting contents.

The power cord 11 supplies power to the vacuum cleaner main body 2 from a wiring plug-in 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 vacuum cleaner main body 2. Further, the pipe portion 3 sends the sucked dust-containing air to the vacuum cleaner main body 2. The pipe portion 3 is attached to a connection pipe 19 as a joint that is detachably connected to the main body connection port 12 of the vacuum cleaner main body 2, a dust collection hose 21 that is fluidly connected to the connection pipe 19, and a dust collection hose 21. A hand operation tube 22 that is fluidly connected, a grip portion 23 that protrudes from the hand operation tube 22, an operation unit 24 provided in the grip portion 23, and an extension tube 25 that is detachably connected to the hand operation tube 22. A suction port 26 that is detachably connected to the extension pipe 25 is provided.

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

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

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

The grip portion 23 is a portion that can be manually gripped by the user 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 accepts a selection operation of each operation mode. Specifically, the operation unit 24 includes a stop switch 24a for receiving the operation stop operation of the electric blower 8 and a start switch 24b for receiving the operation start operation of the electric blower 8. The stop switch 24a and the start switch 24b are electrically connected to the main body control unit 9. The user of the vacuum cleaner 1 can selectively select the operation mode of the electric blower 8 by operating the operation unit 24. During the operation of the electric blower 8, the start switch 24b also functions as an operation mode selection switch. During the operation of the electric blower 8, the main body control unit 9 switches the operation mode in the order of strong → medium → weak → strong → ... each time the operation signal is acquired from the start switch 24b. In addition, the operation unit 24 individually separates a plurality of operation mode selection switches, for example, 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.

The extension tube 25 having a telescopic structure in which a plurality of tubular bodies are superposed is an elongated and substantially cylindrical tube that can be expanded and contracted. One end of the extension tube 25 (here, the rear end) is provided with a detachable joint structure at the other end of the hand control tube 22 (here, the front end). The extension pipe 25 is fluidly connected to the dust separation device 7 through the hand operation pipe 22, the dust collection hose 21, and the connection pipe 19.

The suction port 26 is capable of traveling or sliding 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 a running state or a sliding state. Further, the suction port body 26 includes a rotatable rotary cleaning body 29 arranged at the suction port 28 and an electric motor 31 for rotationally driving the rotary cleaning body 29. One end of the suction port 26 (here, the rear end) is provided with a detachable joint structure at the other end of the extension pipe 25 (here, the front end). This joint structure is a universal joint. The suction port body 26 is fluidly connected to the dust separation device 7 through an extension pipe 25, a hand operation pipe 22, a dust collection hose 21, and a connection pipe 19. That is, the suction port body 26, the extension pipe 25, the hand operation pipe 22, the dust collecting hose 21, the connecting pipe 19, and the dust separating device 7 are suction air passages leading from the electric blower 8 to the suction port 28.

The vacuum cleaner 1 starts the electric blower 8 when the start switch 24b receives an operation of the user when the electric blower 8 is stopped. For example, in the electric vacuum cleaner 1, when the start switch 24b is operated when the electric blower 8 is stopped, the electric blower 8 is first operated in the strong operation mode, and when the start switch 24b is operated again, the electric blower 1 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 so on. The strong operation mode, the medium operation mode, and the weak operation mode are a plurality of preset operation modes. The input value for the electric blower 8 is smaller 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 separating device 7 to create a negative pressure (suction negative pressure) inside the electric blower 8.

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

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

The front / rear, left / right, and top / bottom of the suction port 26 will be described with reference to the user of the vacuum cleaner 1. The direction of the solid line 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. Further, the direction of the solid arrow Y in FIG. 2 is to the left of the suction port 26, and the opposite direction is to the right. Further, the direction of the solid arrow Z in FIG. 2 is above the suction port body 26, and the opposite direction is downward.

The suction port main body 32 has a longer dimension (width) in the left-right direction than a dimension (depth) in the front-rear direction. In other words, the suction port 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 portion is open, and an upper case 42 that covers the lower case 41. The upper case 42 includes an upper front case 43 arranged on the front side and an upper rear case 44 arranged on the rear side.

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

The rotary connection pipe portion 46 rotates around an axis (an axis corresponding to the X axis or an axis parallel to the X axis) along the front-rear direction of the suction port body 26.

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

FIG. 3 is a vertical sectional view of a suction port body according to an 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.

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

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

As shown in FIGS. 3 and 4, the suction port body 26 according to the present embodiment includes a suction port main body 32, a rotary cleaning body 29 rotatably supported by the suction port main body 32, and a suction port main body. It includes an electric motor 31 housed in 32, a suction port body control unit 53, and a brush dust removing unit 55.

The lower case 41 and the upper rear case 44 of the suction port main body 32 partition a majority of the machine room 61 in which the motor 31 is housed and a control room 62 in which the suction port body control unit 53 is housed. .. The lower case 41, the upper front case 43, and the upper rear case 44 partition the suction chamber 63 in which the rotary cleaning body 29 is housed. In other words, the lower case 41 houses the lower half of the suction chamber 63 in which the rotary cleaning body 29 is housed, the lower half of the machine room 61 in which the motor 31 is housed, and the suction port body control unit 53. It is partitioned from the lower half of the control room 62. The upper rear case 44 partitions the upper half of most of the machine room 61 and the upper half of the control room 62, and closes above most of the machine room 61 and above the control room 62. The upper front case 43 and the upper rear case 44 partition the upper half of the suction chamber 63 and block the upper part 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 and the upper half of the machine room 61, and separates the upper half of the suction chamber 63 and 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 into 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 a suction port 28 arranged 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 latter half of the suction port main 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. The left side portion of the suction chamber 63 of the machine room 61 is partitioned by an upper front case 43 and a lower case 41.

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

The rotary cleaning body 29 is arranged 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 portion 32. The rotary cleaning body 29 has a 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 arranged in the rear portion of the suction chamber 63 in the machine room 61. The electric motor 31 includes an output shaft (not shown) that projects 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 (solid arrow r in FIG. 3) that assists the suction port body 26 to move forward.

The suction port control unit 53 operates the electric motor 31 by the electric power supplied from the vacuum cleaner main body 2 via the connection pipe 19, the dust collecting 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 floatly supports the electric motor 31 to the suction port main body portion 32. A support portion (not shown), a main gear fixed to the output shaft of the motor 31 (not shown), a driven gear provided on the rotary cleaning body 29 (not shown), a main gear and a driven gear. It is provided with an endless belt (not shown) that is wound around the motor 31 and transmits a driving force from the motor 31 to the rotary cleaning body 29.

The relay pipe 66 is a discharge port connected to the suction port 28 via the suction chamber 63. The relay pipe 66 is arranged in the rear central portion 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 dust removing unit 55 projects from the inner wall surface 71 of the suction chamber 63 and comes into contact with the brush hair 65 of the rotary cleaning body 29 to throttle the air sucked into the relay pipe 66. The brush dust removing portion 55 is integrally provided on the upper rear case 44. The brush dust removing portion 55 contacts substantially the entire width of the rotary cleaning body 29.

The brush dust removing portion 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 becomes thinner toward the relay pipe 66 from the left and right side portions of the suction chamber 63 so that the contact distance becomes shorter as it is closer to the relay pipe 66 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 has a first space 75 connected to the relay pipe 66 in a state where the suction port 26 is arranged on the surface to be cleaned and the rotary cleaning body 29 is in contact with the surface f to be cleaned. And the second space 76 isolated from the relay pipe 66. The first space 75 is partitioned by a surface to be cleaned f, a rotary cleaning body 29, an inner wall of a suction chamber 63, and a brush dust removing portion 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 removing portion 55, while 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 removing portion 55 is separated from the relay pipe 66.

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

The brush dust removing portion 55 covers and closes a portion of the relay pipe 66 far from the suction port 28. The brush dust removing portion 55 covers and closes the 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 removing portion 55 substantially covers the upper half of the relay pipe 66 in the front view.

The rotary cleaning body 29 includes a sufficient amount of brush bristles 65 to increase the flow velocity of air sucked into the relay tube 66 through the brush bristles 65 in contact with the brush bristles dust removing portion 55. That is, the amount of the brush bristles 65 may be provided continuously (densely) or discontinuously (distracted) 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 brush bristles 65 come into contact with the brush bristles dust removing portion 55 to reduce the amount of air flowing in the entire width of the brush bristles dust removing portion 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 spirally wound around the rotary cleaning body 29. It may extend linearly in the width direction of.

The brush bristles 65 may have a coating of polytetrafluoroethylene (PTFE, so-called Teflon (registered trademark)) so as to easily remove the adhering dust. The brush bristles 65 are separated from the long brush bristles 78, which have long bristles and sequentially come into contact with the brush bristles removing portion 55 as the rotary cleaning body 29 rotates, and the bristles, which have short bristles and are separated from the brush dust removing portions 55. Includes short brush bristles 79 and.

The long brush bristles 78 strongly wipe the hard surface to be cleaned like flooring, and remove fine dust adhering to the surface. The length of the bristles of the long brush bristles 78 should be as short as possible within the range of contact with the brush bristles dust removing portion 55 from the viewpoint of the load when rotating the rotary cleaning body 29.

The short brush bristles 79 are soft like a carpet and knock out dust from the surface to be cleaned, which allows dust to enter between the bristles. The length of the bristles of the short brush bristles 79 should be as long as possible so as not to come into contact with the brush bristles dust removing portion 55 from the viewpoint of squeezing the air flowing between the first space 75 and the second space 76 as much as possible. ..

FIG. 6 is a vertical sectional view of a suction port according to an embodiment of the present invention in the VI-VI line of FIG.

In addition to FIGS. 4 and 5, as shown in FIG. 6, the suction port main body 32 has a motor cooling air port 81 connecting the machine room 61 and the suction chamber 63.

The motor cooling air vent 81 connects the first space 75 of the suction chamber 63 and the machine room 61. The motor cooling air vent 81 exhausts the air in the machine room 61, which has taken heat from the motor 31, from the periphery of the motor 31 to the suction chamber 63. The motor cooling air port 81 is a slit-shaped opening extending vertically and vertically of the suction port body 26. There are a plurality of motor cooling air vents 81, and they are arranged along the motor 31 in the width direction of the suction chamber 63.

The motor cooling air vent 81 may be at least in either the lower case 41 or 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.

The brush dust removing portion 55 may have a hole 82 (two-dot chain line in FIGS. 5 and 6). A plurality of holes 82 may be provided in the width direction of the suction port main body portion 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 removing portion 55 depending on the number and size of the holes 82, that is, the total opening area of the holes 82. The amount of air leaked at the contact portion between the rotary cleaning body 29 and the brush dust removing unit 55 adjusts the speed of the air flow that carries the dust scraped from the brush hair 65 by the brush 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, which is rotating, sequentially brings the brush bristles 65, particularly the long brush bristles 78, into contact with the brush bristles dust removing portion 55. The brush dust removing unit 55 knocks off fine dust that is wiped from the surface to be cleaned and adheres to the long brush bristles 78 from the long brush bristles 78. At this time, the first space 75 and the second space 76 of the suction chamber 63 are separated by a long brush bristles 78 in contact with the brush bristles dust removing portion 55. As a result, the flow velocity of the air sucked from the second space 76 side to the first space 75 side is increased. This air flow causes the dust knocked down from the long brush bristles 78 to flow strongly into the relay pipe 66.

Since the rotary cleaning body 29 is rotated in the direction of assisting the advance of the suction port body 26 (solid line arrow r in FIG. 3), when the long brush bristles 78 come into contact with the brush bristles dust removing portion 55, the length is long. The dust adhering to the brush bristles 78 is exclusively knocked down to the first space 75. The dust knocked down in 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 suction port body 26 to retreat (in FIG. 3, in the opposite direction of the solid line arrow r). In this case, when the long brush bristles 78 come into contact with the brush bristles dust removing portion 55, the dust adhering to the long brush bristles 78 is exclusively knocked down to the second space 76. The dust knocked down in the second space 76 passes through the gaps between the brush bristles 65 in contact with the brush bristles dust removing portion 55, or through the gap generated by the brush bristles 65 away from the brush bristles dust removing portion 55 to the relay tube 66. It is poured strongly.

As described above, the suction port body 26 and the vacuum cleaner 1 according to the present embodiment are provided with the brush hair dust removing unit 55 that comes into contact with the brush hair 65 and squeezes the air sucked into the relay pipe 66. Therefore, the suction port body 26 and the vacuum cleaner 1 knock off the dust adhering to the brush bristles 65 (dust that has entered the brush bristles 65), and the air flow having a higher flow velocity than the surroundings causes the brush bristles 65 to perform. The dust that has been knocked off is quickly moved away from the brush bristles 65. In other words, the suction port 26 and the vacuum cleaner 1 reliably prevent the dust knocked off 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 surely generate a strong air flow for quickly moving the dust knocked off from the brush bristles 65 away from the brush bristles 65.

Further, the suction port body 26 and the electric vacuum cleaner 1 according to the present embodiment are provided with a brush dust removing portion 55 having an arc-shaped contact surface 72 that imitates 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 more reliably flow a strong air for quickly moving the dust knocked off from the brush bristles 65 away from the brush bristles 65. generate.

Furthermore, the suction port 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 bristles 65 a plurality of times while the brush bristles 65 pass over the contact surface 72, and more reliably knocks off the dust adhering to the brush bristles 65 (dust that has entered the brush bristles 65).

Further, the suction port body 26 and the vacuum cleaner 1 according to the present embodiment include a brush dust removing portion 55 that covers and closes 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 to the relay pipe 66 so as to directly flow into the relay pipe 66 from the cleaned surface f side through the first space 75. The suction force is improved by reducing the flow of air flowing into the relay pipe 66 by bypassing the two spaces 76.

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

Furthermore, the suction port body 26 and the electric vacuum cleaner 1 according to the present embodiment have a long brush bristles 78 that sequentially come into contact with the brush dust removing section 55 as the rotary cleaning body 29 rotates, and a brush dust removing section. It comprises a short brush bristles 79, which are separated from 55. Therefore, the suction port body 26 and the electric vacuum cleaner 1 can suppress the load of the electric motor 31 that rotationally drives the rotary cleaning body 29 as compared with the case where the brush bristles 65 are always in contact with the brush bristles dust removing portion 55.

Further, the suction port body 26 and the vacuum cleaner 1 according to the present embodiment include a brush dust removing portion 55 having a hole 82. Therefore, the suction port body 26 and the vacuum cleaner 1 add the speed-increasing speed of the air that accelerates around the brush dust removing portion 55 to the gap between the bristles of the brush bristles 65 and also by the opening area of the hole 82. Can be adjusted.

Further, the suction port body 26 and the vacuum cleaner 1 according to the present embodiment include an electric motor cooling air port 81 that connects the machine room 61 and the suction room 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 the dust knocked off 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 the canister type, but may be an upright type, a stick type, a handy type, or the like.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and variations thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

1 ... electric vacuum cleaner, 2 ... vacuum cleaner body, 3 ... pipe part, 5 ... body case, 6 ... wheels, 7 ... dust separator, 8 ... electric blower, 9 ... body control unit, 11 ... power cord, 12 ... Main unit connection port, 14 ... Insert plug, 19 ... Connection pipe, 21 ... Dust collection hose, 22 ... Hand operation pipe, 23 ... Grip part, 24 ... Operation part, 24a ... Stop switch, 24b ... Start switch, 25 ... Extension Tube, 26 ... Suction port body, 28 ... Suction port, 29 ... Rotating cleaning body, 31 ... Electric motor, 32 ... Suction port body, 33 ... Connection tube, 41 ... Lower case, 42 ... Upper case, 43 ... Upper front Case, 44 ... Upper and rear case, 46 ... Rotating connection pipe, 47 ... Swing connection pipe, 51 ... Power transmission mechanism, 53 ... Suction port control unit, 55 ... Brush dust removal unit, 61 ... Machine room, 62 ... Control room, 63 ... Suction room, 65 ... Brush bristles, 66 ... Relay tube, 71 ... Inner wall surface, 72 ... Contact surface, 73 ... Roughness, 75 ... First space, 76 ... Second space, 78 ... Long brush Hair, 79 ... Short brush hair, 81 ... Electric cooling air vent, 82 ... Hole.

Claims (10)

A suction port main body having a suction port arranged 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 that is rotatably supported by the suction port main body and is arranged in the suction chamber and has brush bristles extending in the normal direction.
With an electric motor
A power transmission mechanism that transmits driving force from the motor to the rotary cleaning body,
It is provided with a brush dust removing portion that protrudes from the inner wall surface of the suction chamber, comes into contact with the brush hair, and squeezes the air sucked into the discharge port .
In the direction along the rotation center line of the rotary cleaning body, the opening width of the discharge port is narrower than the opening width of the suction port, and the length of the contact surface of the brush dust removing portion in the rotational direction of the rotary cleaning body. The closer to the discharge port, the shorter the suction port body. The suction port body according to claim 1, further comprising the brush bristles in an amount that increases the flow velocity of air sucked into the discharge port. The suction port body according to claim 1 or 2, wherein the brush dust removing portion has an arc- shaped contact surface that follows the outer shape of the rotary cleaning body. The suction port body according to claim 3, wherein the contact surface has irregularities. The suction port body according to any one of claims 1 to 4, wherein the brush dust removing portion covers and closes a portion of the discharge port far from the suction port. The suction port according to any one of claims 1 to 5, wherein the brush bristles have a coating of polytetrafluoroethylene. The brush bristles have long bristles and are separated from the long brush bristles that sequentially come into contact with the brush dust removing portion as the rotary cleaning body rotates, and the bristles having short bristles and separated from the brush dust removing portion. The suction port body according to any one of claims 1 to 6, which includes a short brush bristles. The suction port body according to any one of claims 1 to 7, wherein the brush dust removing portion has a hole. The suction port body according to any one of claims 1 to 8, wherein the suction port main body has a machine room for accommodating the electric motor, and an electric motor cooling air port connecting the machine room and the suction chamber. With the vacuum cleaner body,
An electric blower housed in the vacuum cleaner body to generate negative pressure,
A vacuum cleaner comprising the suction port body according to any one of claims 1 to 9, which is fluidly connected to the electric blower.

Images